Revert 46567 - Reimplement accessibility of web content by caching the entire

accessibility tree in the browser process.

Adds new RPCs for a browser tab to request accessibility info from
a renderer; the renderer responds with a complete tree of
accessibility metadata for the entire DOM, which is then cached
in the RenderWidgetHostView. This part is crossplatform and will
help with accessibility on both Windows and Mac OS X.

For Windows, MSAA support for web content has been rewritten to
use this new cache. Tested in JAWS and NVDA screen readers.
Using Chrome with a screen reader is now fast and stable,
unlike the previous implementation. However, note that most
advanced functionality is still not supported, and much work remains
to make Chrome work well with a screen reader. This is a necessary
step to improve stability first.

BUG=25564
BUG=13291
TEST=See http://codereview.chromium.org/1806001

Review URL: http://codereview.chromium.org/1637018

TBR=dmazzoni@chromium.org
Review URL: http://codereview.chromium.org/2031004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@46642 0039d316-1c4b-4281-b951-d872f2087c98

26 files changed, 1173 insertions, 5507 deletions

diff --git a/chrome/browser/browser_accessibility.cc b/chrome/browser/browser_accessibility.cc
index e282263..f6cd32f 100644
--- a/chrome/browser/browser_accessibility.cc
+++ b/chrome/browser/browser_accessibility.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -9,159 +9,134 @@
 
 using webkit_glue::WebAccessibility;
 
-BrowserAccessibility::BrowserAccessibility()
-    : manager_(NULL),
-      parent_(NULL),
-      child_id_(-1),
-      index_in_parent_(-1),
-      renderer_id_(-1),
-      instance_active_(false) {
-}
-
-BrowserAccessibility::~BrowserAccessibility() {
-  InactivateTree();
-}
+HRESULT BrowserAccessibility::Initialize(int iaccessible_id, int routing_id,
+                                         int process_id, HWND parent_hwnd) {
+  // Check input parameters. Root id is 1000, to avoid conflicts with the ids
+  // used by MSAA.
+  if (!parent_hwnd || iaccessible_id < 1000)
+    return E_INVALIDARG;
 
-void BrowserAccessibility::Initialize(
-    BrowserAccessibilityManager* manager,
-    BrowserAccessibility* parent,
-    LONG child_id,
-    LONG index_in_parent,
-    const webkit_glue::WebAccessibility& src) {
-  manager_ = manager;
-  parent_ = parent;
-  child_id_ = child_id;
-  index_in_parent_ = index_in_parent;
-
-  renderer_id_ = src.id;
-  name_ = src.name;
-  value_ = src.value;
-  action_ = src.action;
-  description_ = src.description;
-  help_ = src.help;
-  shortcut_ = src.shortcut;
-  role_ = MSAARole(src.role);
-  state_ = MSAAState(src.state);
-  location_ = src.location;
+  iaccessible_id_ = iaccessible_id;
+  routing_id_ = routing_id;
+  process_id_ = process_id;
+  parent_hwnd_ = parent_hwnd;
 
+  // Mark instance as active.
   instance_active_ = true;
-
-  // Focused is a dynamic state, only one node will be focused at a time.
-  state_ &= ~STATE_SYSTEM_FOCUSED;
+  return S_OK;
 }
 
-void BrowserAccessibility::AddChild(BrowserAccessibility* child) {
-  children_.push_back(child);
-}
+HRESULT BrowserAccessibility::accDoDefaultAction(VARIANT var_id) {
+  if (!instance_active()) {
+    // Instance no longer active, fail gracefully.
+    // TODO(ctguil): Once we have MSAA events, change these fails to having
+    // BrowserAccessibilityManager firing the right event.
+    return E_FAIL;
+  }
 
-void BrowserAccessibility::InactivateTree() {
-  // Mark this object as inactive, so calls to all COM methods will return
-  // failure.
-  instance_active_ = false;
-
-  // Now we can safely call InactivateTree on our children and remove
-  // references to them, so that as much of the tree as possible will be
-  // destroyed now - however, nodes that still have references to them
-  // might stick around a while until all clients have released them.
-  for (std::vector<BrowserAccessibility*>::iterator iter =
-           children_.begin();
-       iter != children_.end(); ++iter) {
-    (*iter)->InactivateTree();
-    (*iter)->Release();
-  }
-  children_.clear();
-}
+  if (var_id.vt != VT_I4)
+    return E_INVALIDARG;
 
-bool BrowserAccessibility::IsDescendantOf(BrowserAccessibility* ancestor) {
-  if (this == ancestor) {
-    return true;
-  } else if (parent_) {
-    return parent_->IsDescendantOf(ancestor);
+  if (!RequestAccessibilityInfo(WebAccessibility::FUNCTION_DODEFAULTACTION,
+                                var_id, NULL, NULL)) {
+    return E_FAIL;
   }
 
-  return false;
-}
-
-BrowserAccessibility* BrowserAccessibility::GetPreviousSibling() {
-  if (parent_ && index_in_parent_ > 0)
-    return parent_->children_[index_in_parent_ - 1];
+  if (response().return_code == WebAccessibility::RETURNCODE_FALSE)
+    return S_FALSE;
 
-  return NULL;
+  return S_OK;
 }
 
-BrowserAccessibility* BrowserAccessibility::GetNextSibling() {
-  if (parent_ &&
-      index_in_parent_ < static_cast<int>(parent_->children_.size() - 1)) {
-    return parent_->children_[index_in_parent_ + 1];
+STDMETHODIMP BrowserAccessibility::accHitTest(LONG x_left, LONG y_top,
+                                              VARIANT* child) {
+  if (!instance_active()) {
+    // Instance no longer active, fail gracefully.
+    return E_FAIL;
   }
 
-  return NULL;
-}
-
-BrowserAccessibility* BrowserAccessibility::NewReference() {
-  AddRef();
-  return this;
-}
-
-//
-// IAccessible methods.
-//
+  if (!child)
+    return E_INVALIDARG;
 
-HRESULT BrowserAccessibility::accDoDefaultAction(VARIANT var_id) {
-  if (!instance_active_) {
-    // Instance no longer active, fail gracefully.
+  if (!parent_hwnd_) {
+    // Parent HWND needed for coordinate conversion.
     return E_FAIL;
   }
 
-  return E_NOTIMPL;
-}
+  // Convert coordinates to test from screen into client window coordinates, to
+  // maintain sandbox functionality on renderer side.
+  POINT p = {x_left, y_top};
+  ::ScreenToClient(parent_hwnd_, &p);
 
-STDMETHODIMP BrowserAccessibility::accHitTest(LONG x_left, LONG y_top,
-                                              VARIANT* child) {
-  if (!instance_active_) {
-    // Instance no longer active, fail gracefully.
+  if (!RequestAccessibilityInfo(WebAccessibility::FUNCTION_HITTEST,
+                                ChildSelfVariant(), p.x, p.y)) {
     return E_FAIL;
   }
 
-  if (!child)
-    return E_INVALIDARG;
+  if (response().return_code == WebAccessibility::RETURNCODE_FALSE) {
+    // The point is outside of the object's boundaries.
+    child->vt = VT_EMPTY;
+    return S_FALSE;
+  }
 
-  return E_NOTIMPL;
+  if (response().output_long1 == -1) {
+    if (CreateInstance(IID_IAccessible, response().object_id,
+                       reinterpret_cast<void**>(&child->pdispVal)) == S_OK) {
+      child->vt = VT_DISPATCH;
+      // Increment the reference count for the retrieved interface.
+      child->pdispVal->AddRef();
+    } else {
+      return E_NOINTERFACE;
+    }
+  } else {
+    child->vt = VT_I4;
+    child->lVal = response().output_long1;
+  }
+
+  return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibility::accLocation(LONG* x_left, LONG* y_top,
                                                LONG* width, LONG* height,
                                                VARIANT var_id) {
-  if (!instance_active_) {
+  if (!instance_active()) {
     // Instance no longer active, fail gracefully.
     return E_FAIL;
   }
 
-  if (!x_left || !y_top || !width || !height)
+  if (var_id.vt != VT_I4 || !x_left || !y_top || !width || !height ||
+      !parent_hwnd_) {
     return E_INVALIDARG;
+  }
 
-  BrowserAccessibility* target = GetTargetFromChildID(var_id);
-  if (!target)
-    return E_INVALIDARG;
+  if (!RequestAccessibilityInfo(WebAccessibility::FUNCTION_LOCATION, var_id,
+                                NULL, NULL)) {
+    return E_FAIL;
+  }
+
+  POINT top_left = {0, 0};
 
   // Find the top left corner of the containing window in screen coords, and
   // adjust the output position by this amount.
-  HWND parent_hwnd = manager_->GetParentHWND();
-  POINT top_left = {0, 0};
-  ::ClientToScreen(parent_hwnd, &top_left);
+  ::ClientToScreen(parent_hwnd_, &top_left);
 
-  *x_left = target->location_.x + top_left.x;
-  *y_top  = target->location_.y + top_left.y;
-  *width  = target->location_.width;
-  *height = target->location_.height;
+  *x_left = response().output_long1 + top_left.x;
+  *y_top  = response().output_long2 + top_left.y;
+
+  *width  = response().output_long3;
+  *height = response().output_long4;
 
   return S_OK;
 }
 
-STDMETHODIMP BrowserAccessibility::accNavigate(
-    LONG nav_dir, VARIANT start, VARIANT* end) {
-  BrowserAccessibility* target = GetTargetFromChildID(start);
-  if (!target)
+STDMETHODIMP BrowserAccessibility::accNavigate(LONG nav_dir, VARIANT start,
+                                               VARIANT* end) {
+  if (!instance_active()) {
+    // Instance no longer active, fail gracefully.
+    return E_FAIL;
+  }
+
+  if (start.vt != VT_I4 || !end)
     return E_INVALIDARG;
 
   if ((nav_dir == NAVDIR_LASTCHILD || nav_dir == NAVDIR_FIRSTCHILD) &&
@@ -170,62 +145,80 @@ STDMETHODIMP BrowserAccessibility::accNavigate(
     return E_INVALIDARG;
   }
 
-  BrowserAccessibility* result;
-  switch (nav_dir) {
-    case NAVDIR_DOWN:
-    case NAVDIR_UP:
-    case NAVDIR_LEFT:
-    case NAVDIR_RIGHT:
-    // These directions are not implemented, matching Mozilla and IE.
-    return E_NOTIMPL;
-  case NAVDIR_FIRSTCHILD:
-    if (target->children_.size() > 0)
-      result = target->children_[0];
-    break;
-  case NAVDIR_LASTCHILD:
-    if (target->children_.size() > 0)
-      result = target->children_[target->children_.size() - 1];
-    break;
-  case NAVDIR_NEXT:
-    result = target->GetNextSibling();
-    break;
-  case NAVDIR_PREVIOUS:
-    result = target->GetPreviousSibling();
-    break;
-  }
-
-  if (!result) {
+  if (nav_dir == NAVDIR_DOWN || nav_dir == NAVDIR_UP ||
+      nav_dir == NAVDIR_LEFT || nav_dir == NAVDIR_RIGHT) {
+    // Directions not implemented, matching Mozilla and IE.
+    return E_INVALIDARG;
+  }
+
+  if (!RequestAccessibilityInfo(WebAccessibility::FUNCTION_NAVIGATE, start,
+                                nav_dir, NULL)) {
+    return E_FAIL;
+  }
+
+  if (response().return_code == WebAccessibility::RETURNCODE_FALSE) {
+    // No screen element was found in the specified direction.
     end->vt = VT_EMPTY;
     return S_FALSE;
   }
 
-  end->vt = VT_DISPATCH;
-  end->pdispVal = result->NewReference();
+  if (response().output_long1 == -1) {
+    if (CreateInstance(IID_IAccessible, response().object_id,
+                       reinterpret_cast<void**>(&end->pdispVal)) == S_OK) {
+      end->vt = VT_DISPATCH;
+      // Increment the reference count for the retrieved interface.
+      end->pdispVal->AddRef();
+    } else {
+      return E_NOINTERFACE;
+    }
+  } else {
+    end->vt = VT_I4;
+    end->lVal = response().output_long1;
+  }
+
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibility::get_accChild(VARIANT var_child,
                                                 IDispatch** disp_child) {
-  if (!instance_active_) {
+  if (!instance_active()) {
     // Instance no longer active, fail gracefully.
     return E_FAIL;
   }
 
-  if (!disp_child)
+  if (var_child.vt != VT_I4 || !disp_child)
     return E_INVALIDARG;
 
-  *disp_child = NULL;
+  // If var_child is the parent, remain with the same IDispatch.
+  if (var_child.lVal == CHILDID_SELF && iaccessible_id_ != 1000)
+    return S_OK;
 
-  BrowserAccessibility* target = GetTargetFromChildID(var_child);
-  if (!target)
-    return E_INVALIDARG;
+  if (!RequestAccessibilityInfo(WebAccessibility::FUNCTION_GETCHILD, var_child,
+                                NULL, NULL)) {
+    return E_FAIL;
+  }
 
-  (*disp_child) = target->NewReference();
-  return S_OK;
+  // TODO(ctguil): Figure out when the return code would be false
+  if (response().return_code == WebAccessibility::RETURNCODE_FALSE) {
+    // When at a leaf, children are handled by the parent object.
+    *disp_child = NULL;
+    return S_FALSE;
+  }
+
+  // Retrieve the IUnknown interface for the parent view, and assign the
+  // IDispatch returned.
+  if (CreateInstance(IID_IAccessible, response().object_id,
+                     reinterpret_cast<void**>(disp_child)) == S_OK) {
+    // Increment the reference count for the retrieved interface.
+    (*disp_child)->AddRef();
+    return S_OK;
+  } else {
+    return E_NOINTERFACE;
+  }
 }
 
 STDMETHODIMP BrowserAccessibility::get_accChildCount(LONG* child_count) {
-  if (!instance_active_) {
+  if (!instance_active()) {
     // Instance no longer active, fail gracefully.
     return E_FAIL;
   }
@@ -233,29 +226,36 @@ STDMETHODIMP BrowserAccessibility::get_accChildCount(LONG* child_count) {
   if (!child_count)
     return E_INVALIDARG;
 
-  *child_count = children_.size();
+  if (!RequestAccessibilityInfo(WebAccessibility::FUNCTION_CHILDCOUNT,
+                                ChildSelfVariant(), NULL, NULL)) {
+    return E_FAIL;
+  }
+
+  *child_count = response().output_long1;
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibility::get_accDefaultAction(VARIANT var_id,
                                                         BSTR* def_action) {
-  if (!instance_active_) {
+  if (!instance_active()) {
     // Instance no longer active, fail gracefully.
     return E_FAIL;
   }
 
-  if (!def_action)
+  if (var_id.vt != VT_I4 || !def_action)
     return E_INVALIDARG;
 
-  BrowserAccessibility* target = GetTargetFromChildID(var_id);
-  if (!target)
-    return E_INVALIDARG;
+  if (!RequestAccessibilityInfo(WebAccessibility::FUNCTION_DEFAULTACTION,
+                                var_id, NULL, NULL)) {
+    return E_FAIL;
+  }
 
-  // Return false if the string is empty.
-  if (target->action_.size() == 0)
+  if (response().return_code == WebAccessibility::RETURNCODE_FALSE) {
+    // No string found.
     return S_FALSE;
+  }
 
-  *def_action = SysAllocString(target->action_.c_str());
+  *def_action = SysAllocString(response().output_string.c_str());
 
   DCHECK(*def_action);
   return S_OK;
@@ -263,30 +263,32 @@ STDMETHODIMP BrowserAccessibility::get_accDefaultAction(VARIANT var_id,
 
 STDMETHODIMP BrowserAccessibility::get_accDescription(VARIANT var_id,
                                                       BSTR* desc) {
-  if (!instance_active_) {
+  if (!instance_active()) {
     // Instance no longer active, fail gracefully.
     return E_FAIL;
   }
 
-  if (!desc)
+  if (var_id.vt != VT_I4 || !desc)
     return E_INVALIDARG;
 
-  BrowserAccessibility* target = GetTargetFromChildID(var_id);
-  if (!target)
-    return E_INVALIDARG;
+  if (!RequestAccessibilityInfo(WebAccessibility::FUNCTION_DESCRIPTION, var_id,
+                                NULL, NULL)) {
+    return E_FAIL;
+  }
 
-  // Return false if the string is empty.
-  if (target->description_.size() == 0)
+  if (response().return_code == WebAccessibility::RETURNCODE_FALSE) {
+    // No string found.
     return S_FALSE;
+  }
 
-  *desc = SysAllocString(target->description_.c_str());
+  *desc = SysAllocString(response().output_string.c_str());
 
   DCHECK(*desc);
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibility::get_accFocus(VARIANT* focus_child) {
-  if (!instance_active_) {
+  if (!instance_active()) {
     // Instance no longer active, fail gracefully.
     return E_FAIL;
   }
@@ -294,38 +296,55 @@ STDMETHODIMP BrowserAccessibility::get_accFocus(VARIANT* focus_child) {
   if (!focus_child)
     return E_INVALIDARG;
 
-  BrowserAccessibility* focus = manager_->GetFocus(this);
-  if (focus == this) {
-    focus_child->vt = VT_I4;
-    focus_child->lVal = CHILDID_SELF;
-  } else if (focus == NULL) {
+  if (!RequestAccessibilityInfo(WebAccessibility::FUNCTION_GETFOCUSEDCHILD,
+                                ChildSelfVariant(), NULL, NULL)) {
+    return E_FAIL;
+  }
+
+  if (response().return_code == WebAccessibility::RETURNCODE_FALSE) {
+    // The window that contains this object is not the active window.
     focus_child->vt = VT_EMPTY;
+    return S_FALSE;
+  }
+
+  if (response().output_long1 == -1) {
+    if (CreateInstance(IID_IAccessible, response().object_id,
+           reinterpret_cast<void**>(&focus_child->pdispVal)) == S_OK) {
+      focus_child->vt = VT_DISPATCH;
+      // Increment the reference count for the retrieved interface.
+      focus_child->pdispVal->AddRef();
+    } else {
+      return E_NOINTERFACE;
+    }
   } else {
-    focus_child->vt = VT_DISPATCH;
-    focus_child->pdispVal = focus->NewReference();
+    focus_child->vt = VT_I4;
+    focus_child->lVal = response().output_long1;
   }
 
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibility::get_accHelp(VARIANT var_id, BSTR* help) {
-  if (!instance_active_) {
+  if (!instance_active()) {
     // Instance no longer active, fail gracefully.
     return E_FAIL;
   }
 
-  if (!help)
+  if (var_id.vt != VT_I4 || !help)
     return E_INVALIDARG;
 
-  BrowserAccessibility* target = GetTargetFromChildID(var_id);
-  if (!target)
-    return E_INVALIDARG;
+  if (!RequestAccessibilityInfo(WebAccessibility::FUNCTION_HELPTEXT, var_id,
+                                NULL, NULL)) {
+    return E_FAIL;
+  }
 
-  // Return false if the string is empty.
-  if (target->help_.size() == 0)
+  if (response().return_code == WebAccessibility::RETURNCODE_FALSE ||
+      response().output_string.empty()) {
+    // No string found.
     return S_FALSE;
+  }
 
-  *help = SysAllocString(target->help_.c_str());
+  *help = SysAllocString(response().output_string.c_str());
 
   DCHECK(*help);
   return S_OK;
@@ -333,126 +352,162 @@ STDMETHODIMP BrowserAccessibility::get_accHelp(VARIANT var_id, BSTR* help) {
 
 STDMETHODIMP BrowserAccessibility::get_accKeyboardShortcut(VARIANT var_id,
                                                            BSTR* acc_key) {
-  if (!instance_active_) {
+  if (!instance_active()) {
     // Instance no longer active, fail gracefully.
     return E_FAIL;
   }
 
-  if (!acc_key)
+  if (var_id.vt != VT_I4 || !acc_key)
     return E_INVALIDARG;
 
-  BrowserAccessibility* target = GetTargetFromChildID(var_id);
-  if (!target)
-    return E_INVALIDARG;
+  if (!RequestAccessibilityInfo(WebAccessibility::FUNCTION_KEYBOARDSHORTCUT,
+                                var_id, NULL, NULL)) {
+    return E_FAIL;
+  }
 
-  // Return false if the string is empty.
-  if (target->shortcut_.size() == 0)
+  if (response().return_code == WebAccessibility::RETURNCODE_FALSE) {
+    // No string found.
     return S_FALSE;
+  }
 
-  *acc_key = SysAllocString(target->shortcut_.c_str());
+  *acc_key = SysAllocString(response().output_string.c_str());
 
   DCHECK(*acc_key);
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibility::get_accName(VARIANT var_id, BSTR* name) {
-  if (!instance_active_) {
+  if (!instance_active()) {
     // Instance no longer active, fail gracefully.
     return E_FAIL;
   }
 
-  if (!name)
+  if (var_id.vt != VT_I4 || !name)
     return E_INVALIDARG;
 
-  BrowserAccessibility* target = GetTargetFromChildID(var_id);
-  if (!target)
-    return E_INVALIDARG;
+  if (!RequestAccessibilityInfo(WebAccessibility::FUNCTION_NAME, var_id, NULL,
+                                NULL)) {
+    return E_FAIL;
+  }
 
-  // Return false if the string is empty.
-  if (target->name_.size() == 0)
+  if (response().return_code == WebAccessibility::RETURNCODE_FALSE) {
+    // No string found.
     return S_FALSE;
+  }
 
-  *name = SysAllocString(target->name_.c_str());
+  *name = SysAllocString(response().output_string.c_str());
 
   DCHECK(*name);
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibility::get_accParent(IDispatch** disp_parent) {
-  if (!instance_active_) {
+  if (!instance_active()) {
     // Instance no longer active, fail gracefully.
     return E_FAIL;
   }
 
-  if (!disp_parent)
+  if (!disp_parent || !parent_hwnd_)
     return E_INVALIDARG;
 
-  IAccessible* parent = parent_;
-  if (parent == NULL) {
-    // This happens if we're the root of the tree;
-    // return the IAccessible for the window.
-    parent = manager_->GetParentWindowIAccessible();
+  // Root node's parent is the containing HWND's IAccessible.
+  if (iaccessible_id_ == 1000) {
+    // For an object that has no parent (e.g. root), point the accessible parent
+    // to the default implementation.
+    HRESULT hr =
+        ::CreateStdAccessibleObject(parent_hwnd_, OBJID_WINDOW,
+                                    IID_IAccessible,
+                                    reinterpret_cast<void**>(disp_parent));
+
+    if (!SUCCEEDED(hr)) {
+      *disp_parent = NULL;
+      return S_FALSE;
+    }
+    return S_OK;
   }
 
-  parent->AddRef();
-  *disp_parent = parent;
-  return S_OK;
+  if (!RequestAccessibilityInfo(WebAccessibility::FUNCTION_GETPARENT,
+                                ChildSelfVariant(), NULL, NULL)) {
+    return E_FAIL;
+  }
+
+  if (response().return_code == WebAccessibility::RETURNCODE_FALSE) {
+    // No parent exists for this object.
+    return S_FALSE;
+  }
+
+  // Retrieve the IUnknown interface for the parent view, and assign the
+  // IDispatch returned.
+  if (CreateInstance(IID_IAccessible, response().object_id,
+                     reinterpret_cast<void**>(disp_parent)) == S_OK) {
+    // Increment the reference count for the retrieved interface.
+    (*disp_parent)->AddRef();
+    return S_OK;
+  } else {
+    return E_NOINTERFACE;
+  }
 }
 
 STDMETHODIMP BrowserAccessibility::get_accRole(VARIANT var_id, VARIANT* role) {
-  if (!instance_active_) {
+  if (!instance_active()) {
     // Instance no longer active, fail gracefully.
     return E_FAIL;
   }
 
-  if (!role)
+  if (var_id.vt != VT_I4 || !role)
     return E_INVALIDARG;
 
-  BrowserAccessibility* target = GetTargetFromChildID(var_id);
-  if (!target)
-    return E_INVALIDARG;
+  if (!RequestAccessibilityInfo(WebAccessibility::FUNCTION_ROLE, var_id, NULL,
+                                NULL)) {
+    return E_FAIL;
+  }
 
   role->vt = VT_I4;
-  role->lVal = target->role_;
+  role->lVal = MSAARole(response().output_long1);
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibility::get_accState(VARIANT var_id,
                                                 VARIANT* state) {
-  if (!instance_active_) {
+  if (!instance_active()) {
     // Instance no longer active, fail gracefully.
     return E_FAIL;
   }
 
-  if (!state)
+  if (var_id.vt != VT_I4 || !state)
     return E_INVALIDARG;
 
-  BrowserAccessibility* target = GetTargetFromChildID(var_id);
-  if (!target)
-    return E_INVALIDARG;
+  if (!RequestAccessibilityInfo(WebAccessibility::FUNCTION_STATE, var_id, NULL,
+                                NULL)) {
+    return E_FAIL;
+  }
 
   state->vt = VT_I4;
-  state->lVal = target->state_;
-  if (manager_->GetFocus(NULL) == this)
-    state->lVal |= STATE_SYSTEM_FOCUSED;
-
+  state->lVal = MSAAState(response().output_long1);
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibility::get_accValue(VARIANT var_id, BSTR* value) {
-  if (!instance_active_) {
+  if (!instance_active()) {
     // Instance no longer active, fail gracefully.
     return E_FAIL;
   }
 
-  if (!value)
+  if (var_id.vt != VT_I4 || !value)
     return E_INVALIDARG;
 
-  BrowserAccessibility* target = GetTargetFromChildID(var_id);
-  if (!target)
-    return E_INVALIDARG;
+  if (!RequestAccessibilityInfo(WebAccessibility::FUNCTION_VALUE, var_id, NULL,
+                                NULL)) {
+    return E_FAIL;
+  }
+
+  if (response().return_code == WebAccessibility::RETURNCODE_FALSE ||
+      response().output_string.empty()) {
+    // No string found.
+    return S_FALSE;
+  }
 
-  *value = SysAllocString(target->value_.c_str());
+  *value = SysAllocString(response().output_string.c_str());
 
   DCHECK(*value);
   return S_OK;
@@ -461,136 +516,54 @@ STDMETHODIMP BrowserAccessibility::get_accValue(VARIANT var_id, BSTR* value) {
 STDMETHODIMP BrowserAccessibility::get_accHelpTopic(BSTR* help_file,
                                                     VARIANT var_id,
                                                     LONG* topic_id) {
-  return E_NOTIMPL;
-}
+  if (help_file)
+    *help_file = NULL;
 
-STDMETHODIMP BrowserAccessibility::get_accSelection(VARIANT* selected) {
-  if (!instance_active_) {
-    // Instance no longer active, fail gracefully.
-    return E_FAIL;
-  }
+  if (topic_id)
+    *topic_id = static_cast<LONG>(-1);
 
   return E_NOTIMPL;
 }
 
-STDMETHODIMP BrowserAccessibility::accSelect(LONG flags_sel, VARIANT var_id) {
-  if (!instance_active_) {
-    // Instance no longer active, fail gracefully.
-    return E_FAIL;
-  }
+STDMETHODIMP BrowserAccessibility::get_accSelection(VARIANT* selected) {
+  if (selected)
+    selected->vt = VT_EMPTY;
 
   return E_NOTIMPL;
 }
 
-//
-// IAccessible2 methods.
-//
-
-STDMETHODIMP BrowserAccessibility::role(LONG* role) {
-  if (!instance_active_) {
-    // Instance no longer active, fail gracefully.
-    return E_FAIL;
-  }
-
-  if (!role)
-    return E_INVALIDARG;
-
-  *role = role_;
-
-  return S_OK;
-}
-
-STDMETHODIMP BrowserAccessibility::get_states(AccessibleStates* states) {
-  if (!instance_active_) {
-    // Instance no longer active, fail gracefully.
-    return E_FAIL;
-  }
-
-  if (!states)
-    return E_INVALIDARG;
-
-  *states = state_;
-
-  return S_OK;
-}
-
-STDMETHODIMP BrowserAccessibility::get_uniqueID(LONG* unique_id) {
-  if (!instance_active_) {
-    // Instance no longer active, fail gracefully.
-    return E_FAIL;
-  }
-
-  if (!unique_id)
-    return E_INVALIDARG;
-
-  *unique_id = child_id_;
-  return S_OK;
-}
-
-STDMETHODIMP BrowserAccessibility::get_windowHandle(HWND* window_handle) {
-  if (!instance_active_) {
-    // Instance no longer active, fail gracefully.
-    return E_FAIL;
-  }
-
-  if (!window_handle)
-    return E_INVALIDARG;
-
-  *window_handle = manager_->GetParentHWND();
-  return S_OK;
-}
-
-STDMETHODIMP BrowserAccessibility::get_indexInParent(LONG* index_in_parent) {
-  if (!instance_active_) {
-    // Instance no longer active, fail gracefully.
-    return E_FAIL;
-  }
-
-  if (!index_in_parent)
-    return E_INVALIDARG;
-
-  *index_in_parent = index_in_parent_;
-  return S_OK;
+STDMETHODIMP BrowserAccessibility::CreateInstance(REFIID iid,
+                                                  int iaccessible_id,
+                                                  void** interface_ptr) {
+  return BrowserAccessibilityManager::GetInstance()->
+      CreateAccessibilityInstance(iid, iaccessible_id, routing_id_,
+                                  process_id_, parent_hwnd_, interface_ptr);
 }
 
-//
-// IServiceProvider methods.
-//
-
-STDMETHODIMP BrowserAccessibility::QueryService(
-    REFGUID guidService, REFIID riid, void** object) {
-  if (!instance_active_) {
-    // Instance no longer active, fail gracefully.
-    return E_FAIL;
-  }
+bool BrowserAccessibility::RequestAccessibilityInfo(int iaccessible_func_id,
+                                                    VARIANT var_id, LONG input1,
+                                                    LONG input2) {
+  DCHECK(V_VT(&var_id) == VT_I4);
 
-  if (guidService == IID_IAccessible || guidService == IID_IAccessible2)
-    return QueryInterface(riid, object);
+  // Create and populate IPC message structure, for retrieval of accessibility
+  // information from the renderer.
+  WebAccessibility::InParams in_params;
+  in_params.object_id = iaccessible_id_;
+  in_params.function_id = iaccessible_func_id;
+  in_params.child_id = V_I4(&var_id);
+  in_params.input_long1 = input1;
+  in_params.input_long2 = input2;
 
-  *object = NULL;
-  return E_FAIL;
+  return BrowserAccessibilityManager::GetInstance()->
+           RequestAccessibilityInfo(&in_params, routing_id_, process_id_) &&
+         response().return_code != WebAccessibility::RETURNCODE_FAIL;
 }
 
-//
-// Private methods.
-//
-
-BrowserAccessibility* BrowserAccessibility::GetTargetFromChildID(
-    const VARIANT& var_id) {
-  if (var_id.vt != VT_I4)
-    return NULL;
-
-  LONG child_id = var_id.lVal;
-  if (child_id == CHILDID_SELF)
-    return this;
-
-  if (child_id >= 1 && child_id <= static_cast<LONG>(children_.size()))
-    return children_[child_id - 1];
-
-  return manager_->GetFromChildID(child_id);
+const WebAccessibility::OutParams& BrowserAccessibility::response() {
+  return BrowserAccessibilityManager::GetInstance()->response();
 }
 
-LONG BrowserAccessibility::MSAARole(LONG browser_accessibility_role) {
+long BrowserAccessibility::MSAARole(long browser_accessibility_role) {
   switch (browser_accessibility_role) {
     case WebAccessibility::ROLE_APPLICATION:
       return ROLE_SYSTEM_APPLICATION;
@@ -658,8 +631,8 @@ LONG BrowserAccessibility::MSAARole(LONG browser_accessibility_role) {
   }
 }
 
-LONG BrowserAccessibility::MSAAState(LONG browser_accessibility_state) {
-  LONG state = 0;
+long BrowserAccessibility::MSAAState(long browser_accessibility_state) {
+  long state = 0;
 
   if ((browser_accessibility_state >> WebAccessibility::STATE_CHECKED) & 1)
     state |= STATE_SYSTEM_CHECKED;
diff --git a/chrome/browser/browser_accessibility.h b/chrome/browser/browser_accessibility.h
index 767ede2..ecf746e 100644
--- a/chrome/browser/browser_accessibility.h
+++ b/chrome/browser/browser_accessibility.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -7,13 +7,9 @@
 
 #include <atlbase.h>
 #include <atlcom.h>
-#include <oleacc.h>
 
-#include <vector>
+#include <oleacc.h>
 
-#include "base/scoped_comptr_win.h"
-#include "chrome/browser/browser_accessibility_manager.h"
-#include "ia2_api_all.h"  // Generated
 #include "webkit/glue/webaccessibility.h"
 
 using webkit_glue::WebAccessibility;
@@ -29,58 +25,29 @@ using webkit_glue::WebAccessibility;
 ////////////////////////////////////////////////////////////////////////////////
 class ATL_NO_VTABLE BrowserAccessibility
   : public CComObjectRootEx<CComMultiThreadModel>,
-    public IDispatchImpl<IAccessible2, &IID_IAccessible2,
-                         &LIBID_IAccessible2Lib>,
-    public IServiceProvider {
+    public IDispatchImpl<IAccessible, &IID_IAccessible, &LIBID_Accessibility> {
  public:
   BEGIN_COM_MAP(BrowserAccessibility)
-    COM_INTERFACE_ENTRY2(IDispatch, IAccessible2)
-    COM_INTERFACE_ENTRY2(IAccessible, IAccessible2)
-    COM_INTERFACE_ENTRY(IAccessible2)
-    COM_INTERFACE_ENTRY(IServiceProvider)
+    COM_INTERFACE_ENTRY2(IDispatch, IAccessible)
+    COM_INTERFACE_ENTRY(IAccessible)
   END_COM_MAP()
 
-  BrowserAccessibility();
-
-  virtual ~BrowserAccessibility();
-
-  // Initialize this object and mark it as active.
-  void Initialize(BrowserAccessibilityManager* manager,
-                  BrowserAccessibility* parent,
-                  LONG child_id,
-                  LONG index_in_parent,
-                  const webkit_glue::WebAccessibility& src);
-
-  // Add a child of this object.
-  void AddChild(BrowserAccessibility* child);
-
-  // Mark this object as inactive, and remove references to all children.
-  // When no other clients hold any references to this object it will be
-  // deleted, and in the meantime, calls to any methods will return E_FAIL.
-  void InactivateTree();
-
-  // Return true if this object is equal to or a descendant of |ancestor|.
-  bool IsDescendantOf(BrowserAccessibility* ancestor);
-
-  // Return the previous sibling of this object, or NULL if it's the first
-  // child of its parent.
-  BrowserAccessibility* GetPreviousSibling();
-
-  // Return the next sibling of this object, or NULL if it's the last child
-  // of its parent.
-  BrowserAccessibility* GetNextSibling();
+  BrowserAccessibility()
+      : iaccessible_id_(-1),
+        routing_id_(-1),
+        process_id_(-1),
+        parent_hwnd_(NULL),
+        instance_active_(false) {
+  }
 
-  // Accessors
-  LONG child_id() { return child_id_; }
+  ~BrowserAccessibility() {}
 
-  // Add one to the reference count and return the same object. Always
-  // use this method when returning a BrowserAccessibility object as
-  // an output parameter to a COM interface, never use it otherwise.
-  BrowserAccessibility* NewReference();
+  HRESULT Initialize(int iaccessible_id,
+                     int routing_id,
+                     int process_id,
+                     HWND parent_hwnd);
 
-  //
-  // IAccessible methods.
-  //
+  // Supported IAccessible methods.
 
   // Performs the default action on a given object.
   STDMETHODIMP accDoDefaultAction(VARIANT var_id);
@@ -134,8 +101,8 @@ class ATL_NO_VTABLE BrowserAccessibility
   // Returns the value associated with the object.
   STDMETHODIMP get_accValue(VARIANT var_id, BSTR* value);
 
-  // Make an object take focus or extend the selection.
-  STDMETHODIMP accSelect(LONG flags_sel, VARIANT var_id);
+  // Non-supported (by WebKit) IAccessible methods.
+  STDMETHODIMP accSelect(LONG flags_sel, VARIANT var_id) { return E_NOTIMPL; }
 
   STDMETHODIMP get_accHelpTopic(BSTR* help_file,
                                 VARIANT var_id,
@@ -143,143 +110,77 @@ class ATL_NO_VTABLE BrowserAccessibility
 
   STDMETHODIMP get_accSelection(VARIANT* selected);
 
-  // Deprecated methods, not implemented.
-  STDMETHODIMP put_accName(VARIANT var_id, BSTR put_name) {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP put_accValue(VARIANT var_id, BSTR put_val) {
-    return E_NOTIMPL;
-  }
-
-  //
-  // IAccessible2 methods.
-  //
-
-  // Returns role from a longer list of possible roles.
-  STDMETHODIMP role(LONG* role);
-
-  // Returns the state bitmask from a larger set of possible states.
-  STDMETHODIMP get_states(AccessibleStates* states);
+  // Deprecated functions, not implemented here.
+  STDMETHODIMP put_accName(VARIANT var_id, BSTR put_name) { return E_NOTIMPL; }
+  STDMETHODIMP put_accValue(VARIANT var_id, BSTR put_val) { return E_NOTIMPL; }
 
-  // Get the unique ID of this object so that the client knows if it's
-  // been encountered previously.
-  STDMETHODIMP get_uniqueID(LONG* unique_id);
+  // Accessors/mutators.
+  HWND parent_hwnd() const { return parent_hwnd_;}
 
-  // Get the window handle of the enclosing window.
-  STDMETHODIMP get_windowHandle(HWND* window_handle);
+  // Modify/retrieve the state (active/inactive) of this instance.
+  void set_instance_active(bool instance_active) {
+    instance_active_ = instance_active;
+  }
+  int instance_active() const { return instance_active_; }
 
-  // Get this object's index in its parent object.
-  STDMETHODIMP get_indexInParent(LONG* index_in_parent);
+  int routing_id() const { return routing_id_; }
 
-  // IAccessible2 methods not implemented.
-  STDMETHODIMP get_extendedRole(BSTR* extended_role) {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_nRelations(LONG* n_relations) {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_relation(LONG relation_index,
-                            IAccessibleRelation** relation) {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_relations(LONG max_relations,
-                             IAccessibleRelation** relations,
-                             LONG *n_relations) {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP scrollTo(enum IA2ScrollType scroll_type) {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP scrollToPoint(enum IA2CoordinateType coordinate_type,
-                             LONG x,
-                             LONG y) {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_groupPosition(LONG* group_level,
-                                 LONG* similar_items_in_group,
-                                 LONG* position_in_group) {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_localizedExtendedRole(BSTR* localized_extended_role) {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_nExtendedStates(LONG* n_extended_states) {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_extendedStates(LONG max_extended_states,
-                                  BSTR** extended_states,
-                                  LONG* n_extended_states) {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_localizedExtendedStates(LONG max_localized_extended_states,
-                                           BSTR** localized_extended_states,
-                                           LONG* n_localized_extended_states) {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_locale(IA2Locale* locale) {
-    return E_NOTIMPL;
-  }
-  STDMETHODIMP get_attributes(BSTR* attributes) {
-    return E_NOTIMPL;
+ private:
+  // Creates a VARIANT that will reference the current accessibility
+  // object, not a child accessibility object.
+  VARIANT ChildSelfVariant() const {
+    VARIANT var;
+    V_VT(&var) = VT_I4;
+    V_I4(&var) = CHILDID_SELF;
+    return var;
   }
 
-  //
-  // IServiceProvider methods.
-  //
+  // Wrapper functions, calling through to singleton instance of
+  // BrowserAccessibilityManager.
 
-  STDMETHODIMP QueryService(REFGUID guidService, REFIID riid, void** object);
+  // Creates an instance of BrowserAccessibility, initializes it and sets the
+  // [iaccessible_id] and [parent_id].
+  STDMETHODIMP CreateInstance(REFIID iid,
+                              int iaccessible_id,
+                              void** interface_ptr);
 
- private:
-  // Many MSAA methods take a var_id parameter indicating that the operation
-  // should be performed on a particular child ID, rather than this object.
-  // This method tries to figure out the target object from |var_id| and
-  // returns a pointer to the target object if it exists, otherwise NULL.
-  // Does not return a new reference.
-  BrowserAccessibility* GetTargetFromChildID(const VARIANT& var_id);
+  // Composes and sends a message for requesting needed accessibility
+  // information. Unused LONG input parameters should be NULL, and the VARIANT
+  // an empty, valid instance.
+  bool RequestAccessibilityInfo(int iaccessible_func_id,
+                                VARIANT var_id,
+                                LONG input1, LONG input2);
+
+  // Accessors.
+  const WebAccessibility::OutParams& response();
 
   // Returns a conversion from the BrowserAccessibilityRole (as defined in
   // webkit/glue/webaccessibility.h) to an MSAA role.
-  LONG MSAARole(LONG browser_accessibility_role);
+  long MSAARole(long browser_accessibility_role);
 
   // Returns a conversion from the BrowserAccessibilityState (as defined in
   // webkit/glue/webaccessibility.h) to MSAA states set.
-  LONG MSAAState(LONG browser_accessibility_state);
-
-  // The manager of this tree of accessibility objects; needed for
-  // global operations like focus tracking.
-  BrowserAccessibilityManager* manager_;
-  // The parent of this object, may be NULL if we're the root object.
-  BrowserAccessibility* parent_;
-  // The ID of this object; globally unique within the browser process.
-  LONG child_id_;
-  // The index of this within its parent object.
-  LONG index_in_parent_;
-  // The ID of this object in the renderer process.
-  int32 renderer_id_;
-
-  // The children of this object.
-  std::vector<BrowserAccessibility*> children_;
-
-  // Accessibility metadata from the renderer, used to respond to MSAA
-  // events.
-  string16 name_;
-  string16 value_;
-  string16 action_;
-  string16 description_;
-  string16 help_;
-  string16 shortcut_;
-  LONG role_;
-  LONG state_;
-  WebKit::WebRect location_;
-
-  // COM objects are reference-counted. When we're done with this object
-  // and it's removed from our accessibility tree, a client may still be
-  // holding onto a pointer to this object, so we mark it as inactive
-  // so that calls to any of this object's methods immediately return
-  // failure.
+  long MSAAState(long browser_accessibility_state);
+
+  // Id to uniquely distinguish this instance in the render-side caching,
+  // mapping it to the correct IAccessible on that side. Initialized to -1.
+  int iaccessible_id_;
+
+  // The unique ids of this IAccessible instance. Used to help
+  // BrowserAccessibilityManager instance retrieve the correct member
+  // variables for this process.
+  int routing_id_;
+  int process_id_;
+
+  HWND parent_hwnd_;
+
+  // The instance should only be active if there is a non-terminated
+  // RenderProcessHost associated with it. The BrowserAccessibilityManager keeps
+  // track of this state, and sets it to false to disable all calls into the
+  // renderer from this instance of BroweserAccessibility, and have all
+  // IAccessible functions return E_FAIL.
   bool instance_active_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibility);
 };
-
 #endif  // CHROME_BROWSER_BROWSER_ACCESSIBILITY_H_
diff --git a/chrome/browser/browser_accessibility_manager.cc b/chrome/browser/browser_accessibility_manager.cc
index 8e37719..cd53e72 100644
--- a/chrome/browser/browser_accessibility_manager.cc
+++ b/chrome/browser/browser_accessibility_manager.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -8,130 +8,161 @@
 #include "chrome/browser/browser_accessibility.h"
 #include "chrome/browser/renderer_host/render_process_host.h"
 #include "chrome/browser/renderer_host/render_view_host.h"
+#include "chrome/common/notification_service.h"
 #include "chrome/common/render_messages.h"
 
 using webkit_glue::WebAccessibility;
 
-// Factory method to create an instance of BrowserAccessibility
-BrowserAccessibility* BrowserAccessibilityFactory::Create() {
-  CComObject<BrowserAccessibility>* instance;
-  HRESULT hr = CComObject<BrowserAccessibility>::CreateInstance(&instance);
-  DCHECK(SUCCEEDED(hr));
-  return instance->NewReference();
-}
+// The time in ms after which we give up and return an error when processing an
+// accessibility message and no response has been received from the renderer.
+static const int kAccessibilityMessageTimeOut = 10000;
 
 // static
-// Start child IDs at -1 and decrement each time, because clients use
-// child IDs of 1, 2, 3, ... to access the children of an object by
-// index, so we use negative IDs to clearly distinguish between indices
-// and unique IDs.
-LONG BrowserAccessibilityManager::next_child_id_ = -1;
-
-BrowserAccessibilityManager::BrowserAccessibilityManager(
-    HWND parent_hwnd,
-    const webkit_glue::WebAccessibility& src,
-    BrowserAccessibilityFactory* factory)
-    : parent_hwnd_(parent_hwnd),
-      factory_(factory) {
-  HRESULT hr = ::CreateStdAccessibleObject(
-      parent_hwnd_, OBJID_WINDOW, IID_IAccessible,
-      reinterpret_cast<void **>(&window_iaccessible_));
-  DCHECK(SUCCEEDED(hr));
-  root_ = CreateAccessibilityTree(NULL, src, 0);
-  if (!focus_)
-    focus_ = root_;
+BrowserAccessibilityManager* BrowserAccessibilityManager::GetInstance() {
+  return Singleton<BrowserAccessibilityManager>::get();
 }
 
-BrowserAccessibilityManager::~BrowserAccessibilityManager() {
-  // Clients could still hold references to some nodes of the tree, so
-  // calling Inactivate will make sure that as many nodes as possible are
-  // released now, and remaining nodes are marked as inactive so that
-  // calls to any methods on them will return E_FAIL;
-  root_->InactivateTree();
-  root_->Release();
+BrowserAccessibilityManager::BrowserAccessibilityManager() {
+  registrar_.Add(this, NotificationType::RENDERER_PROCESS_TERMINATED,
+                 NotificationService::AllSources());
 }
 
-BrowserAccessibility* BrowserAccessibilityManager::GetRoot() {
-  return root_;
+BrowserAccessibilityManager::~BrowserAccessibilityManager() {
+  // Clear hashmap.
+  render_process_host_map_.clear();
 }
 
-BrowserAccessibility* BrowserAccessibilityManager::GetFromChildID(
-    LONG child_id) {
-  base::hash_map<LONG, BrowserAccessibility*>::iterator iter =
-      child_id_map_.find(child_id);
-  if (iter != child_id_map_.end()) {
-    return iter->second;
-  } else {
-    return NULL;
+STDMETHODIMP BrowserAccessibilityManager::CreateAccessibilityInstance(
+    REFIID iid, int acc_obj_id, int routing_id, int process_id,
+    HWND parent_hwnd, void** interface_ptr) {
+  if (IID_IUnknown == iid || IID_IDispatch == iid || IID_IAccessible == iid) {
+    CComObject<BrowserAccessibility>* instance = NULL;
+
+    HRESULT hr = CComObject<BrowserAccessibility>::CreateInstance(&instance);
+    DCHECK(SUCCEEDED(hr));
+
+    if (!instance)
+      return E_FAIL;
+
+    ScopedComPtr<IAccessible> accessibility_instance(instance);
+
+    // Set class member variables.
+    instance->Initialize(acc_obj_id, routing_id, process_id, parent_hwnd);
+
+    // Retrieve the RenderViewHost connected to this request.
+    RenderViewHost* rvh = RenderViewHost::FromID(process_id, routing_id);
+
+    // Update cache with RenderProcessHost/BrowserAccessibility pair.
+    if (rvh && rvh->process()) {
+      render_process_host_map_.insert(MapEntry(rvh->process()->id(), instance));
+    } else {
+      // No RenderProcess active for this instance.
+      return E_FAIL;
+    }
+
+    // All is well, assign the temp instance to the output pointer.
+    *interface_ptr = accessibility_instance.Detach();
+    return S_OK;
   }
+  // No supported interface found, return error.
+  *interface_ptr = NULL;
+  return E_NOINTERFACE;
 }
 
-IAccessible* BrowserAccessibilityManager::GetParentWindowIAccessible() {
-  return window_iaccessible_;
+bool BrowserAccessibilityManager::RequestAccessibilityInfo(
+    WebAccessibility::InParams* in, int routing_id, int process_id) {
+  // Create and populate IPC message structure, for retrieval of accessibility
+  // information from the renderer.
+  WebAccessibility::InParams in_params;
+  in_params.object_id = in->object_id;
+  in_params.function_id = in->function_id;
+  in_params.child_id = in->child_id;
+  in_params.input_long1 = in->input_long1;
+  in_params.input_long2 = in->input_long2;
+
+  // Retrieve the RenderViewHost connected to this request.
+  RenderViewHost* rvh = RenderViewHost::FromID(process_id, routing_id);
+
+  // Send accessibility information retrieval message to the renderer.
+  bool success = false;
+  if (rvh && rvh->process() && rvh->process()->HasConnection()) {
+    IPC::SyncMessage* msg =
+        new ViewMsg_GetAccessibilityInfo(routing_id, in_params, &out_params_);
+    // Necessary for the send to keep the UI responsive.
+    msg->EnableMessagePumping();
+    success = rvh->process()->SendWithTimeout(msg,
+        kAccessibilityMessageTimeOut);
+  }
+  return success;
 }
 
-HWND BrowserAccessibilityManager::GetParentHWND() {
-  return parent_hwnd_;
+bool BrowserAccessibilityManager::ChangeAccessibilityFocus(int acc_obj_id,
+                                                           int process_id,
+                                                           int routing_id) {
+  BrowserAccessibility* browser_acc =
+      GetBrowserAccessibility(process_id, routing_id);
+  if (browser_acc) {
+    // Notify Access Technology that there was a change in keyboard focus.
+    ::NotifyWinEvent(EVENT_OBJECT_FOCUS, browser_acc->parent_hwnd(),
+                     OBJID_CLIENT, static_cast<LONG>(acc_obj_id));
+    return true;
+  }
+  return false;
 }
 
-BrowserAccessibility* BrowserAccessibilityManager::GetFocus(
-    BrowserAccessibility* root) {
-  if (focus_ && (!root || focus_->IsDescendantOf(root)))
-    return focus_;
-
-  return NULL;
+bool BrowserAccessibilityManager::OnAccessibilityObjectStateChange(
+    int acc_obj_id, int process_id, int routing_id) {
+  BrowserAccessibility* browser_acc =
+      GetBrowserAccessibility(process_id, routing_id);
+  if (browser_acc) {
+    // Notify Access Technology that there was a change in state.
+    ::NotifyWinEvent(EVENT_OBJECT_STATECHANGE, browser_acc->parent_hwnd(),
+                     OBJID_CLIENT, static_cast<LONG>(acc_obj_id));
+    return true;
+  }
+  return false;
 }
 
-void BrowserAccessibilityManager::OnAccessibilityFocusChange(int renderer_id) {
-  base::hash_map<int, LONG>::iterator iter =
-      renderer_id_to_child_id_map_.find(renderer_id);
-  if (iter == renderer_id_to_child_id_map_.end())
-    return;
-
-  LONG child_id = iter->second;
-  base::hash_map<LONG, BrowserAccessibility*>::iterator uniq_iter =
-    child_id_map_.find(child_id);
-  if (uniq_iter != child_id_map_.end())
-    focus_ = uniq_iter->second;
-  ::NotifyWinEvent(EVENT_OBJECT_FOCUS, parent_hwnd_, OBJID_CLIENT, child_id);
+const WebAccessibility::OutParams& BrowserAccessibilityManager::response() {
+  return out_params_;
 }
 
-void BrowserAccessibilityManager::OnAccessibilityObjectStateChange(
-    int renderer_id) {
-  base::hash_map<int, LONG>::iterator iter =
-      renderer_id_to_child_id_map_.find(renderer_id);
-  if (iter == renderer_id_to_child_id_map_.end())
-    return;
+BrowserAccessibility* BrowserAccessibilityManager::GetBrowserAccessibility(
+    int process_id, int routing_id) {
+  // Retrieve the BrowserAccessibility connected to the requester's id. There
+  // could be multiple BrowserAccessibility connected to the given |process_id|,
+  // but they all have the same parent HWND, so using the first hit is fine.
+  RenderProcessHostMap::iterator it =
+      render_process_host_map_.lower_bound(process_id);
 
-  LONG child_id = iter->second;
-  ::NotifyWinEvent(EVENT_OBJECT_FOCUS, parent_hwnd_, OBJID_CLIENT, child_id);
-}
+  RenderProcessHostMap::iterator end_of_matching_objects =
+    render_process_host_map_.upper_bound(process_id);
 
-BrowserAccessibility* BrowserAccessibilityManager::CreateAccessibilityTree(
-    BrowserAccessibility* parent,
-    const webkit_glue::WebAccessibility& src,
-    int index_in_parent) {
-  BrowserAccessibility* instance = factory_->Create();
-
-  // Get the next child ID, and wrap around when we get near the end
-  // of a 32-bit integer range. It's okay to wrap around; we just want
-  // to avoid it as long as possible because clients may cache the ID of
-  // an object for a while to determine if they've seen it before.
-  LONG child_id = next_child_id_;
-  next_child_id_--;
-  if (next_child_id_ == -2000000000)
-    next_child_id_ = -1;
-
-  instance->Initialize(this, parent, child_id, index_in_parent, src);
-  child_id_map_[child_id] = instance;
-  renderer_id_to_child_id_map_[src.id] = child_id;
-  if ((src.state >> WebAccessibility::STATE_FOCUSED) & 1)
-    focus_ = instance;
-  for (int i = 0; i < static_cast<int>(src.children.size()); ++i) {
-    BrowserAccessibility* child = CreateAccessibilityTree(
-        instance, src.children[i], i);
-    instance->AddChild(child);
+  for (; it != end_of_matching_objects; ++it) {
+    if (it->second && it->second->routing_id() == routing_id)
+      return it->second;
   }
+  return NULL;
+}
 
-  return instance;
+void BrowserAccessibilityManager::Observe(NotificationType type,
+                                          const NotificationSource& source,
+                                          const NotificationDetails& details) {
+  DCHECK(type == NotificationType::RENDERER_PROCESS_TERMINATED);
+  RenderProcessHost* rph = Source<RenderProcessHost>(source).ptr();
+  DCHECK(rph);
+
+  RenderProcessHostMap::iterator it =
+      render_process_host_map_.lower_bound(rph->id());
+
+  RenderProcessHostMap::iterator end_of_matching_objects =
+    render_process_host_map_.upper_bound(rph->id());
+
+  for (; it != end_of_matching_objects; ++it) {
+    if (it->second) {
+      // Set all matching BrowserAccessibility instances to inactive state.
+      // TODO(klink): Do more active memory cleanup as well.
+      it->second->set_instance_active(false);
+    }
+  }
 }
diff --git a/chrome/browser/browser_accessibility_manager.h b/chrome/browser/browser_accessibility_manager.h
index 1db8100..4850242 100644
--- a/chrome/browser/browser_accessibility_manager.h
+++ b/chrome/browser/browser_accessibility_manager.h
@@ -1,102 +1,104 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_BROWSER_ACCESSIBILITY_MANAGER_H_
 #define CHROME_BROWSER_BROWSER_ACCESSIBILITY_MANAGER_H_
 
-#include <atlbase.h>
-#include <atlcom.h>
-#include <oleacc.h>
-
 #include <map>
 
-#include "base/hash_tables.h"
-#include "base/scoped_comptr_win.h"
-#include "base/scoped_ptr.h"
+#include "base/singleton.h"
+#include "chrome/common/notification_registrar.h"
 #include "webkit/glue/webaccessibility.h"
 
 class BrowserAccessibility;
 class RenderProcessHost;
 class RenderWidgetHost;
 
-class BrowserAccessibilityFactory {
- public:
-  virtual ~BrowserAccessibilityFactory() {}
-
-  // Create an instance of BrowserAccessibility and return a new
-  // reference to it.
-  virtual BrowserAccessibility* Create();
-};
-
-// Manages a tree of BrowserAccessibility objects.
-class BrowserAccessibilityManager {
+using webkit_glue::WebAccessibility;
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// BrowserAccessibilityManager
+//
+// Used to manage instance creation and memory handling for browser side
+// accessibility. A singleton class. It implements NotificationObserver to
+// ensure that a termination of a renderer process gets propagated to the
+// active BrowserAccessibility instances calling into it. Each such instance
+// will upon such an event be set to an inactive state, failing calls from the
+// assistive technology gracefully.
+////////////////////////////////////////////////////////////////////////////////
+class BrowserAccessibilityManager : public NotificationObserver {
  public:
-  BrowserAccessibilityManager(
-      HWND parent_hwnd,
-      const webkit_glue::WebAccessibility& src,
-      BrowserAccessibilityFactory* factory = new BrowserAccessibilityFactory());
-
-  virtual ~BrowserAccessibilityManager();
-
-  // Return a pointer to the root of the tree, does not make a new reference.
-  BrowserAccessibility* GetRoot();
-
-  // Return a pointer to the object corresponding to the given child_id,
-  // does not make a new reference.
-  BrowserAccessibility* GetFromChildID(LONG child_id);
-
-  // Get a the default IAccessible for the parent window, does not make a
-  // new reference.
-  IAccessible* GetParentWindowIAccessible();
-
-  // Get the parent window.
-  HWND GetParentHWND();
-
-  // Return the object that has focus, if it's a descandant of the
-  // given root (inclusive). Does not make a new reference.
-  BrowserAccessibility* GetFocus(BrowserAccessibility* root);
-
-  // Called when the renderer process has notified us of a focus or state
-  // change. Send a notification to MSAA clients of the change.
-  void OnAccessibilityFocusChange(int acc_obj_id);
-  void OnAccessibilityObjectStateChange(int acc_obj_id);
+  // Gets the singleton BrowserAccessibilityManager object. The first time this
+  // method is called, a CacheManagerHost object is constructed and returned.
+  // Subsequent calls will return the same object.
+  static BrowserAccessibilityManager* GetInstance();
+
+  // Creates an instance of BrowserAccessibility, initializes it and sets the
+  // |acc_obj_id|, which is used for IPC communication, and |instance_id|,
+  // which is used to identify the mapping between accessibility instance and
+  // RenderProcess.
+  STDMETHODIMP CreateAccessibilityInstance(REFIID iid,
+                                           int acc_obj_id,
+                                           int routing_id,
+                                           int process_id,
+                                           HWND parent_hwnd,
+                                           void** interface_ptr);
+
+  // Composes and sends a message for requesting needed accessibility
+  // information.
+  bool RequestAccessibilityInfo(WebAccessibility::InParams* in,
+                                int routing_id,
+                                int process_id);
+
+  // Notifies assistive technology that renderer focus changed, through the
+  // platform-specific channels.
+  bool ChangeAccessibilityFocus(int acc_obj_id, int process_id, int routing_id);
+
+  // Notifies assistive technology that an object's state changed, through the
+  // platform-specific channels.
+  bool OnAccessibilityObjectStateChange(int acc_obj_id,
+                                        int process_id,
+                                        int routing_id);
+
+  // Wrapper function, for cleaner code.
+  const WebAccessibility::OutParams& response();
+
+  // NotificationObserver implementation.
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
+ protected:
+  // This class is a singleton.  Do not instantiate directly.
+  BrowserAccessibilityManager();
+  friend struct DefaultSingletonTraits<BrowserAccessibilityManager>;
+
+  ~BrowserAccessibilityManager();
 
  private:
-  // Recursively build a tree of BrowserAccessibility objects from
-  // the WebAccessibility tree received from the renderer process.
-  BrowserAccessibility* CreateAccessibilityTree(
-      BrowserAccessibility* parent,
-      const webkit_glue::WebAccessibility& src,
-      int index_in_parent);
+  // Retrieves the BrowserAccessibility instance connected to the
+  // RenderProcessHost identified by the process/routing id pair.
+  BrowserAccessibility* GetBrowserAccessibility(int process_id, int routing_id);
 
-  // The parent window.
-  HWND parent_hwnd_;
+  // Multi-map from process id (key) to active BrowserAccessibility instances
+  // for that RenderProcessHost.
+  typedef std::multimap<int, BrowserAccessibility*> RenderProcessHostMap;
+  typedef std::pair<int, BrowserAccessibility*> MapEntry;
 
-  // Factory to create BrowserAccessibility objects (for dependency injection).
-  scoped_ptr<BrowserAccessibilityFactory> factory_;
+  NotificationRegistrar registrar_;
 
-  // A default IAccessible instance for the parent window.
-  ScopedComPtr<IAccessible> window_iaccessible_;
+  // Mapping to track which RenderProcessHosts ids are active. If a
+  // RenderProcessHost is found to be terminated, its id (key) should be removed
+  // from this mapping, and the connected BrowserAccessibility ids/instances
+  // invalidated.
+  RenderProcessHostMap render_process_host_map_;
 
-  // The root of the tree of IAccessible objects and the element that
-  // currently has focus, if any.
-  BrowserAccessibility* root_;
-  BrowserAccessibility* focus_;
-
-  // A mapping from the IDs of objects in the renderer, to the child IDs
-  // we use internally here.
-  base::hash_map<int, LONG> renderer_id_to_child_id_map_;
-
-  // A mapping from child IDs to BrowserAccessibility objects.
-  base::hash_map<LONG, BrowserAccessibility*> child_id_map_;
-
-  // The next child ID to use; static so that they're global to the process.
-  // Screen readers cache these IDs to see if they've seen the same object
-  // before so we should avoid reusing them within the same project.
-  static LONG next_child_id_;
+  // Structure passed by reference to hold response parameters from the
+  // renderer.
+  WebAccessibility::OutParams out_params_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityManager);
 };
-
 #endif  // CHROME_BROWSER_BROWSER_ACCESSIBILITY_MANAGER_H_
diff --git a/chrome/browser/browser_accessibility_unittest.cc b/chrome/browser/browser_accessibility_unittest.cc
deleted file mode 100644
index f2429ea..0000000
--- a/chrome/browser/browser_accessibility_unittest.cc
+++ /dev/null
@@ -1,109 +0,0 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/scoped_ptr.h"
-#include "chrome/browser/browser_accessibility_manager.h"
-#include "chrome/browser/browser_accessibility.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-using webkit_glue::WebAccessibility;
-
-// Subclass of BrowserAccessibility that counts the number of instances.
-class CountedBrowserAccessibility : public BrowserAccessibility {
- public:
-  CountedBrowserAccessibility() { global_obj_count_++; }
-  virtual ~CountedBrowserAccessibility() { global_obj_count_--; }
-  static int global_obj_count_;
-};
-
-int CountedBrowserAccessibility::global_obj_count_ = 0;
-
-// Factory that creates a CountedBrowserAccessibility.
-class CountedBrowserAccessibilityFactory : public BrowserAccessibilityFactory {
- public:
-  virtual ~CountedBrowserAccessibilityFactory() {}
-  virtual BrowserAccessibility* Create() {
-    CComObject<CountedBrowserAccessibility>* instance;
-    HRESULT hr = CComObject<CountedBrowserAccessibility>::CreateInstance(
-        &instance);
-    DCHECK(SUCCEEDED(hr));
-    return instance->NewReference();
-  }
-};
-
-// Test that BrowserAccessibilityManager correctly releases the tree of
-// BrowserAccessibility instances upon delete.
-TEST(BrowserAccessibilityTest, TestNoLeaks) {
-  // ATL needs a pointer to a COM module.
-  CComModule module;
-  _pAtlModule = &module;
-  // Make sure COM is initialized for this thread; it's safe to call twice.
-  ::CoInitialize(NULL);
-
-  // Create WebAccessibility objects for a simple document tree,
-  // representing the accessibility information used to initialize
-  // BrowserAccessibilityManager.
-  WebAccessibility button;
-  button.id = 2;
-  button.name = L"Button";
-  button.role = WebAccessibility::ROLE_PUSHBUTTON;
-  button.state = 0;
-
-  WebAccessibility checkbox;
-  checkbox.id = 3;
-  checkbox.name = L"Checkbox";
-  checkbox.role = WebAccessibility::ROLE_CHECKBUTTON;
-  checkbox.state = 0;
-
-  WebAccessibility root;
-  root.id = 1;
-  root.name = L"Document";
-  root.role = WebAccessibility::ROLE_DOCUMENT;
-  root.state = 0;
-  root.children.push_back(button);
-  root.children.push_back(checkbox);
-
-  // Construct a BrowserAccessibilityManager with this WebAccessibility tree
-  // and a factory for an instance-counting BrowserAccessibility, and ensure
-  // that exactly 3 instances were created. Note that the manager takes
-  // ownership of the factory.
-  CountedBrowserAccessibility::global_obj_count_ = 0;
-  BrowserAccessibilityManager* manager =
-      new BrowserAccessibilityManager(
-          GetDesktopWindow(), root, new CountedBrowserAccessibilityFactory());
-  ASSERT_EQ(3, CountedBrowserAccessibility::global_obj_count_);
-
-  // Delete the manager and test that all 3 instances are deleted.
-  delete manager;
-  ASSERT_EQ(0, CountedBrowserAccessibility::global_obj_count_);
-
-  // Construct a manager again, and this time use the IAccessible interface
-  // to get new references to two of the three nodes in the tree.
-  manager = new BrowserAccessibilityManager(
-      GetDesktopWindow(), root, new CountedBrowserAccessibilityFactory());
-  ASSERT_EQ(3, CountedBrowserAccessibility::global_obj_count_);
-  BrowserAccessibility* root_accessible = manager->GetRoot();
-  IDispatch* root_iaccessible = NULL;
-  IDispatch* child1_iaccessible = NULL;
-  VARIANT var_child;
-  var_child.vt = VT_I4;
-  var_child.lVal = CHILDID_SELF;
-  HRESULT hr = root_accessible->get_accChild(var_child, &root_iaccessible);
-  ASSERT_EQ(S_OK, hr);
-  var_child.lVal = 1;
-  hr = root_accessible->get_accChild(var_child, &child1_iaccessible);
-  ASSERT_EQ(S_OK, hr);
-
-  // Now delete the manager, and only one of the three nodes in the tree
-  // should be released.
-  delete manager;
-  ASSERT_EQ(2, CountedBrowserAccessibility::global_obj_count_);
-
-  // Release each of our references and make sure that each one results in
-  // the instance being deleted as its reference count hits zero.
-  root_iaccessible->Release();
-  ASSERT_EQ(1, CountedBrowserAccessibility::global_obj_count_);
-  child1_iaccessible->Release();
-  ASSERT_EQ(0, CountedBrowserAccessibility::global_obj_count_);
-}
diff --git a/chrome/browser/renderer_host/render_view_host.cc b/chrome/browser/renderer_host/render_view_host.cc
index 285e24e..2dc570e 100644
--- a/chrome/browser/renderer_host/render_view_host.cc
+++ b/chrome/browser/renderer_host/render_view_host.cc
@@ -676,10 +676,6 @@ bool RenderViewHost::SuddenTerminationAllowed() const {
   return sudden_termination_allowed_ || process()->sudden_termination_allowed();
 }
 
-void RenderViewHost::RequestAccessibilityTree() {
-  Send(new ViewMsg_GetAccessibilityTree(routing_id()));
-}
-
 ///////////////////////////////////////////////////////////////////////////////
 // RenderViewHost, IPC message handlers:
 
@@ -832,7 +828,6 @@ void RenderViewHost::OnMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(ViewHostMsg_PageContents, OnPageContents)
     IPC_MESSAGE_HANDLER(ViewHostMsg_PageTranslated, OnPageTranslated)
     IPC_MESSAGE_HANDLER(ViewHostMsg_ContentBlocked, OnContentBlocked)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_AccessibilityTree, OnAccessibilityTree)
     // Have the super handle all other messages.
     IPC_MESSAGE_UNHANDLED(RenderWidgetHost::OnMessageReceived(msg))
   IPC_END_MESSAGE_MAP_EX()
@@ -1831,16 +1826,21 @@ void RenderViewHost::OnExtensionPostMessage(
 }
 
 void RenderViewHost::OnAccessibilityFocusChange(int acc_obj_id) {
-  view()->OnAccessibilityFocusChange(acc_obj_id);
+#if defined(OS_WIN)
+  BrowserAccessibilityManager::GetInstance()->ChangeAccessibilityFocus(
+      acc_obj_id, process()->id(), routing_id());
+#else
+  // TODO(port): accessibility not yet implemented. See http://crbug.com/8288.
+#endif
 }
 
 void RenderViewHost::OnAccessibilityObjectStateChange(int acc_obj_id) {
-  view()->OnAccessibilityObjectStateChange(acc_obj_id);
-}
-
-void RenderViewHost::OnAccessibilityTree(
-    const webkit_glue::WebAccessibility& tree) {
-  view()->UpdateAccessibilityTree(tree);
+#if defined(OS_WIN)
+  BrowserAccessibilityManager::GetInstance()->OnAccessibilityObjectStateChange(
+      acc_obj_id, process()->id(), routing_id());
+#else
+  // TODO(port): accessibility not yet implemented. See http://crbug.com/8288.
+#endif
 }
 
 void RenderViewHost::OnCSSInserted() {
diff --git a/chrome/browser/renderer_host/render_view_host.h b/chrome/browser/renderer_host/render_view_host.h
index c5bec3c..0fffedd 100644
--- a/chrome/browser/renderer_host/render_view_host.h
+++ b/chrome/browser/renderer_host/render_view_host.h
@@ -22,7 +22,6 @@
 #include "third_party/WebKit/WebKit/chromium/public/WebPopupType.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebTextDirection.h"
 #include "webkit/glue/password_form_dom_manager.h"
-#include "webkit/glue/webaccessibility.h"
 #include "webkit/glue/window_open_disposition.h"
 
 class FilePath;
@@ -465,9 +464,6 @@ class RenderViewHost : public RenderWidgetHost {
   // changed.
   void EnablePreferredSizeChangedMode();
 
-  // Requests a snapshot of an accessible DOM tree from the renderer.
-  void RequestAccessibilityTree();
-
  protected:
   // RenderWidgetHost protected overrides.
   virtual bool PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
@@ -629,7 +625,6 @@ class RenderViewHost : public RenderWidgetHost {
   void OnExtensionPostMessage(int port_id, const std::string& message);
   void OnAccessibilityFocusChange(int acc_obj_id);
   void OnAccessibilityObjectStateChange(int acc_obj_id);
-  void OnAccessibilityTree(const webkit_glue::WebAccessibility& tree);
   void OnCSSInserted();
   void OnPageContents(const GURL& url,
                       int32 page_id,
diff --git a/chrome/browser/renderer_host/render_widget_host_view.h b/chrome/browser/renderer_host/render_widget_host_view.h
index 3a285c1..6e5e28e 100644
--- a/chrome/browser/renderer_host/render_widget_host_view.h
+++ b/chrome/browser/renderer_host/render_widget_host_view.h
@@ -15,7 +15,6 @@
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebPopupType.h"
 #include "webkit/glue/plugins/webplugin.h"
-#include "webkit/glue/webaccessibility.h"
 
 namespace gfx {
 class Rect;
@@ -236,11 +235,6 @@ class RenderWidgetHostView {
   // widget associated with this RenderWidgetHostView.
   virtual bool ContainsNativeView(gfx::NativeView native_view) const = 0;
 
-  virtual void UpdateAccessibilityTree(
-      const webkit_glue::WebAccessibility& tree) { }
-  virtual void OnAccessibilityFocusChange(int acc_obj_id) { }
-  virtual void OnAccessibilityObjectStateChange(int acc_obj_id) { }
-
  protected:
   // Interface class only, do not construct.
   RenderWidgetHostView() : popup_type_(WebKit::WebPopupTypeNone) {}
diff --git a/chrome/browser/renderer_host/render_widget_host_view_win.cc b/chrome/browser/renderer_host/render_widget_host_view_win.cc
index 34d09b2..975609e 100644
--- a/chrome/browser/renderer_host/render_widget_host_view_win.cc
+++ b/chrome/browser/renderer_host/render_widget_host_view_win.cc
@@ -13,7 +13,6 @@
 #include "base/process_util.h"
 #include "base/thread.h"
 #include "base/win_util.h"
-#include "chrome/browser/browser_accessibility.h"
 #include "chrome/browser/browser_accessibility_manager.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_trial.h"
@@ -27,7 +26,6 @@
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/native_web_keyboard_event.h"
-#include "chrome/common/notification_service.h"
 #include "chrome/common/plugin_messages.h"
 #include "chrome/common/render_messages.h"
 #include "gfx/canvas.h"
@@ -287,9 +285,6 @@ RenderWidgetHostViewWin::RenderWidgetHostViewWin(RenderWidgetHost* widget)
   renderer_accessible_ =
       CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableRendererAccessibility);
-  registrar_.Add(this,
-                 NotificationType::RENDERER_PROCESS_TERMINATED,
-                 NotificationService::AllSources());
 }
 
 RenderWidgetHostViewWin::~RenderWidgetHostViewWin() {
@@ -1467,65 +1462,40 @@ LRESULT RenderWidgetHostViewWin::OnMouseActivate(UINT, WPARAM, LPARAM,
   return MA_ACTIVATE;
 }
 
-void RenderWidgetHostViewWin::UpdateAccessibilityTree(
-    const webkit_glue::WebAccessibility& tree) {
-  browser_accessibility_manager_.reset(
-      new BrowserAccessibilityManager(m_hWnd, tree));
-}
-
-void RenderWidgetHostViewWin::OnAccessibilityFocusChange(int acc_obj_id) {
-  if (browser_accessibility_manager_.get()) {
-    browser_accessibility_manager_->OnAccessibilityFocusChange(acc_obj_id);
-  }
-}
-
-void RenderWidgetHostViewWin::OnAccessibilityObjectStateChange(int acc_obj_id) {
-  if (browser_accessibility_manager_.get()) {
-    browser_accessibility_manager_->OnAccessibilityObjectStateChange(
-        acc_obj_id);
-  }
-}
-
-void RenderWidgetHostViewWin::Observe(NotificationType type,
-                                      const NotificationSource& source,
-                                      const NotificationDetails& details) {
-  DCHECK(type == NotificationType::RENDERER_PROCESS_TERMINATED);
-
-  // Get the RenderProcessHost that posted this notification, and exit
-  // if it's not the one associated with this host view.
-  RenderProcessHost* render_process_host =
-      Source<RenderProcessHost>(source).ptr();
-  DCHECK(render_process_host);
-  if (render_widget_host_ == NULL ||
-      render_process_host != render_widget_host_->process()) {
-    return;
-  }
-
-  // If it was our RenderProcessHost that posted the notification,
-  // clear the BrowserAccessibilityManager, because the renderer is
-  // dead and any accessibility information we have is now stale.
-  browser_accessibility_manager_.reset(NULL);
-}
-
 LRESULT RenderWidgetHostViewWin::OnGetObject(UINT message, WPARAM wparam,
                                              LPARAM lparam, BOOL& handled) {
-  // TODO(dmazzoni): http://crbug.com/25564 Disabling accessibility in the
+  LRESULT reference_result = static_cast<LRESULT>(0L);
+  // TODO(jcampan): http://b/issue?id=1432077 Disabling accessibility in the
   // renderer is a temporary work-around until that bug is fixed.
-  if (!renderer_accessible_) {
-    handled = false;
-    return static_cast<LRESULT>(0L);
-  }
-
-  if (lparam == OBJID_CLIENT && browser_accessibility_manager_.get()) {
-    BrowserAccessibility* root = browser_accessibility_manager_->GetRoot();
-    if (root) {
-      return LresultFromObject(IID_IAccessible, wparam,
-                               static_cast<IAccessible*>(root->NewReference()));
+  if (!renderer_accessible_)
+    return reference_result;
+
+  // Accessibility readers will send an OBJID_CLIENT message.
+  if (OBJID_CLIENT == lparam) {
+    // If our MSAA DOM root is already created, reuse that pointer. Otherwise,
+    // create a new one.
+    if (!browser_accessibility_root_) {
+      // Create a new instance of IAccessible. Root id is 1000, to avoid
+      // conflicts with the ids used by MSAA.
+      BrowserAccessibilityManager::GetInstance()->CreateAccessibilityInstance(
+          IID_IAccessible, 1000,
+          render_widget_host_->routing_id(),
+          render_widget_host_->process()->id(),
+          m_hWnd,
+          reinterpret_cast<void **>(browser_accessibility_root_.Receive()));
+
+      if (!browser_accessibility_root_) {
+        // No valid root found, return with failure.
+        return static_cast<LRESULT>(0L);
+      }
     }
-  }
 
-  handled = false;
-  return static_cast<LRESULT>(0L);
+    // Create a reference to BrowserAccessibility which MSAA will marshall to
+    // the client.
+    reference_result = LresultFromObject(IID_IAccessible, wparam,
+        static_cast<IAccessible*>(browser_accessibility_root_));
+  }
+  return reference_result;
 }
 
 void RenderWidgetHostViewWin::OnFinalMessage(HWND window) {
diff --git a/chrome/browser/renderer_host/render_widget_host_view_win.h b/chrome/browser/renderer_host/render_widget_host_view_win.h
index 23716b9..09686ad 100644
--- a/chrome/browser/renderer_host/render_widget_host_view_win.h
+++ b/chrome/browser/renderer_host/render_widget_host_view_win.h
@@ -13,10 +13,8 @@
 #include "base/scoped_comptr_win.h"
 #include "base/scoped_ptr.h"
 #include "base/task.h"
-#include "chrome/browser/browser_accessibility_manager.h"
 #include "chrome/browser/ime_input.h"
 #include "chrome/browser/renderer_host/render_widget_host_view.h"
-#include "chrome/common/notification_registrar.h"
 #include "webkit/glue/webcursor.h"
 
 namespace gfx {
@@ -57,8 +55,7 @@ class RenderWidgetHostViewWin
     : public CWindowImpl<RenderWidgetHostViewWin,
                          CWindow,
                          RenderWidgetHostHWNDTraits>,
-      public RenderWidgetHostView,
-      public NotificationObserver {
+      public RenderWidgetHostView {
  public:
   // The view will associate itself with the given widget.
   explicit RenderWidgetHostViewWin(RenderWidgetHost* widget);
@@ -144,15 +141,6 @@ class RenderWidgetHostViewWin
   virtual void SetBackground(const SkBitmap& background);
   virtual bool ContainsNativeView(gfx::NativeView native_view) const;
   virtual void SetVisuallyDeemphasized(bool deemphasized);
-  virtual void UpdateAccessibilityTree(
-      const webkit_glue::WebAccessibility& tree);
-  virtual void OnAccessibilityFocusChange(int acc_obj_id);
-  virtual void OnAccessibilityObjectStateChange(int acc_obj_id);
-
-  // Implementation of NotificationObserver:
-  virtual void Observe(NotificationType type,
-                       const NotificationSource& source,
-                       const NotificationDetails& details);
 
  protected:
   // Windows Message Handlers
@@ -308,7 +296,7 @@ class RenderWidgetHostViewWin
 
   // Instance of accessibility information for the root of the MSAA
   // tree representation of the WebKit render tree.
-  scoped_ptr<BrowserAccessibilityManager> browser_accessibility_manager_;
+  ScopedComPtr<IAccessible> browser_accessibility_root_;
 
   // The time at which this view started displaying white pixels as a result of
   // not having anything to paint (empty backing store from renderer). This
@@ -327,9 +315,6 @@ class RenderWidgetHostViewWin
   // whenever we paint.
   bool visually_deemphasized_;
 
-  // Registrar so we can listen to RENDERER_PROCESS_TERMINATED events.
-  NotificationRegistrar registrar_;
-
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewWin);
 };
 
diff --git a/chrome/browser/tab_contents/tab_contents.cc b/chrome/browser/tab_contents/tab_contents.cc
index 1b5dcca..1601823 100644
--- a/chrome/browser/tab_contents/tab_contents.cc
+++ b/chrome/browser/tab_contents/tab_contents.cc
@@ -290,8 +290,7 @@ TabContents::TabContents(Profile* profile,
       is_showing_before_unload_dialog_(false),
       renderer_preferences_(),
       opener_dom_ui_type_(DOMUIFactory::kNoDOMUI),
-      language_state_(&controller_),
-      requested_accessibility_tree_(false) {
+      language_state_(&controller_) {
   ClearBlockedContentSettings();
   renderer_preferences_util::UpdateFromSystemSettings(
       &renderer_preferences_, profile);
@@ -349,10 +348,6 @@ TabContents::TabContents(Profile* profile,
   // Set-up the showing of the omnibox search infobar if applicable.
   if (OmniboxSearchHint::IsEnabled(profile))
     omnibox_search_hint_.reset(new OmniboxSearchHint(this));
-
-  renderer_accessible_ =
-    CommandLine::ForCurrentProcess()->HasSwitch(
-        switches::kEnableRendererAccessibility);
 }
 
 TabContents::~TabContents() {
@@ -2131,10 +2126,6 @@ void TabContents::DidFailProvisionalLoadWithError(
 
 void TabContents::DocumentLoadedInFrame() {
   controller_.DocumentLoadedInFrame();
-  if (renderer_accessible_ && !requested_accessibility_tree_) {
-    render_view_host()->RequestAccessibilityTree();
-    requested_accessibility_tree_ = true;
-  }
 }
 
 void TabContents::OnContentBlocked(ContentSettingsType type) {
@@ -2304,8 +2295,6 @@ void TabContents::DidNavigate(RenderViewHost* rvh,
                               const ViewHostMsg_FrameNavigate_Params& params) {
   int extra_invalidate_flags = 0;
 
-  requested_accessibility_tree_ = false;
-
   if (PageTransition::IsMainFrame(params.transition)) {
     bool was_bookmark_bar_visible = ShouldShowBookmarkBar();
     bool was_extension_shelf_visible = IsExtensionShelfAlwaysVisible();
diff --git a/chrome/browser/tab_contents/tab_contents.h b/chrome/browser/tab_contents/tab_contents.h
index 3bca5e2..ff2361f 100644
--- a/chrome/browser/tab_contents/tab_contents.h
+++ b/chrome/browser/tab_contents/tab_contents.h
@@ -1265,15 +1265,6 @@ class TabContents : public PageNavigator,
   // Maps each frame on this page to its geolocation content settings.
   GeolocationContentSettings geolocation_content_settings_;
 
-  // Whether the renderer is made accessible.
-  // TODO(dmazzoni): http://crbug.com/25564 This is a temporary work-around
-  // until that bug is fixed.
-  bool renderer_accessible_;
-
-  // Keep track of if we've already requested the accessibility tree so
-  // we don't do it more than once.
-  bool requested_accessibility_tree_;
-
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(TabContents);
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 23235d4..cb442ec 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -2787,7 +2787,6 @@
           'dependencies': [
             '../gears/gears.gyp:gears',
             '../google_update/google_update.gyp:google_update',
-            '../third_party/iaccessible2/iaccessible2.gyp:iaccessible2',
             '../views/views.gyp:views',
             '<(allocator_target)',
           ],
diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi
index 184c14b..016af11 100644
--- a/chrome/chrome_tests.gypi
+++ b/chrome/chrome_tests.gypi
@@ -594,7 +594,6 @@
         'browser/bookmarks/bookmark_model_test_utils.h',
         'browser/bookmarks/bookmark_model_unittest.cc',
         'browser/bookmarks/bookmark_utils_unittest.cc',
-        'browser/browser_accessibility_unittest.cc',
         'browser/browser_commands_unittest.cc',
         'browser/browser_theme_pack_unittest.cc',
         'browser/browser_theme_provider_unittest.cc',
@@ -983,7 +982,6 @@
         'common/notification_service_unittest.cc',
         'common/process_watcher_unittest.cc',
         'common/property_bag_unittest.cc',
-        'common/render_messages_unittest.cc',
         'common/resource_dispatcher_unittest.cc',
         'common/sandbox_mac_unittest.mm',
         'common/thumbnail_score_unittest.cc',
@@ -1133,7 +1131,6 @@
           'dependencies': [
             'chrome_dll_version',
             'installer/installer.gyp:installer_util_strings',
-            '../third_party/iaccessible2/iaccessible2.gyp:iaccessible2',
             'test_chrome_plugin',  # run time dependency
             '<(allocator_target)',
           ],
@@ -1185,7 +1182,6 @@
           'sources!': [
             'browser/bookmarks/bookmark_codec_unittest.cc',
             'browser/bookmarks/bookmark_drag_data_unittest.cc',
-            'browser/browser_accessibility_unittest.cc',
             'browser/browser_unittest.cc',
             'browser/chrome_plugin_unittest.cc',
             'browser/extensions/extension_process_manager_unittest.cc',
diff --git a/chrome/common/render_messages.h b/chrome/common/render_messages.h
index 7f6ce16..3770fe2 100644
--- a/chrome/common/render_messages.h
+++ b/chrome/common/render_messages.h
@@ -711,6 +711,80 @@ struct ParamTraits<FilterPolicy::Type> {
 };
 
 template <>
+struct ParamTraits<webkit_glue::WebAccessibility::InParams> {
+  typedef webkit_glue::WebAccessibility::InParams param_type;
+  static void Write(Message* m, const param_type& p) {
+    WriteParam(m, p.object_id);
+    WriteParam(m, p.function_id);
+    WriteParam(m, p.child_id);
+    WriteParam(m, p.input_long1);
+    WriteParam(m, p.input_long2);
+  }
+  static bool Read(const Message* m, void** iter, param_type* p) {
+    return
+      ReadParam(m, iter, &p->object_id) &&
+      ReadParam(m, iter, &p->function_id) &&
+      ReadParam(m, iter, &p->child_id) &&
+      ReadParam(m, iter, &p->input_long1) &&
+      ReadParam(m, iter, &p->input_long2);
+  }
+  static void Log(const param_type& p, std::wstring* l) {
+    l->append(L"(");
+    LogParam(p.object_id, l);
+    l->append(L", ");
+    LogParam(p.function_id, l);
+    l->append(L", ");
+    LogParam(p.child_id, l);
+    l->append(L", ");
+    LogParam(p.input_long1, l);
+    l->append(L", ");
+    LogParam(p.input_long2, l);
+    l->append(L")");
+  }
+};
+
+template <>
+struct ParamTraits<webkit_glue::WebAccessibility::OutParams> {
+  typedef webkit_glue::WebAccessibility::OutParams param_type;
+  static void Write(Message* m, const param_type& p) {
+    WriteParam(m, p.object_id);
+    WriteParam(m, p.output_long1);
+    WriteParam(m, p.output_long2);
+    WriteParam(m, p.output_long3);
+    WriteParam(m, p.output_long4);
+    WriteParam(m, p.output_string);
+    WriteParam(m, p.return_code);
+  }
+  static bool Read(const Message* m, void** iter, param_type* p) {
+    return
+      ReadParam(m, iter, &p->object_id) &&
+      ReadParam(m, iter, &p->output_long1) &&
+      ReadParam(m, iter, &p->output_long2) &&
+      ReadParam(m, iter, &p->output_long3) &&
+      ReadParam(m, iter, &p->output_long4) &&
+      ReadParam(m, iter, &p->output_string) &&
+      ReadParam(m, iter, &p->return_code);
+  }
+  static void Log(const param_type& p, std::wstring* l) {
+    l->append(L"(");
+    LogParam(p.object_id, l);
+    l->append(L", ");
+    LogParam(p.output_long1, l);
+    l->append(L", ");
+    LogParam(p.output_long2, l);
+    l->append(L", ");
+    LogParam(p.output_long3, l);
+    l->append(L", ");
+    LogParam(p.output_long4, l);
+    l->append(L", ");
+    LogParam(p.output_string, l);
+    l->append(L", ");
+    LogParam(p.return_code, l);
+    l->append(L")");
+  }
+};
+
+template <>
 struct ParamTraits<ViewHostMsg_ImeControl> {
   typedef ViewHostMsg_ImeControl param_type;
   static void Write(Message* m, const param_type& p) {
@@ -2594,74 +2668,9 @@ struct ParamTraits<WindowContainerType> {
   }
 };
 
-template <>
-struct ParamTraits<webkit_glue::WebAccessibility> {
-  typedef webkit_glue::WebAccessibility param_type;
-  static void Write(Message* m, const param_type& p) {
-    WriteParam(m, p.id);
-    WriteParam(m, p.name);
-    WriteParam(m, p.value);
-    WriteParam(m, p.action);
-    WriteParam(m, p.description);
-    WriteParam(m, p.help);
-    WriteParam(m, p.shortcut);
-    WriteParam(m, static_cast<int>(p.role));
-    WriteParam(m, static_cast<int>(p.state));
-    WriteParam(m, p.location);
-    WriteParam(m, p.children);
-  }
-  static bool Read(const Message* m, void** iter, param_type* p) {
-    bool ret = ReadParam(m, iter, &p->id);
-    ret = ret && ReadParam(m, iter, &p->name);
-    ret = ret && ReadParam(m, iter, &p->value);
-    ret = ret && ReadParam(m, iter, &p->action);
-    ret = ret && ReadParam(m, iter, &p->description);
-    ret = ret && ReadParam(m, iter, &p->help);
-    ret = ret && ReadParam(m, iter, &p->shortcut);
-    int role = -1;
-    ret = ret && ReadParam(m, iter, &role);
-    if (role >= webkit_glue::WebAccessibility::ROLE_NONE &&
-      role < webkit_glue::WebAccessibility::NUM_ROLES) {
-      p->role = static_cast<webkit_glue::WebAccessibility::Role>(role);
-    } else {
-      p->role = webkit_glue::WebAccessibility::ROLE_NONE;
-    }
-    int state = 0;
-    ret = ret && ReadParam(m, iter, &state);
-    p->state = static_cast<webkit_glue::WebAccessibility::State>(state);
-    ret = ret && ReadParam(m, iter, &p->location);
-    ret = ret && ReadParam(m, iter, &p->children);
-    return ret;
-  }
-  static void Log(const param_type& p, std::wstring* l) {
-    l->append(L"(");
-    LogParam(p.id, l);
-    l->append(L", ");
-    LogParam(p.name, l);
-    l->append(L", ");
-    LogParam(p.value, l);
-    l->append(L", ");
-    LogParam(p.action, l);
-    l->append(L", ");
-    LogParam(p.description, l);
-    l->append(L", ");
-    LogParam(p.help, l);
-    l->append(L", ");
-    LogParam(p.shortcut, l);
-    l->append(L", ");
-    LogParam(static_cast<int>(p.role), l);
-    l->append(L", ");
-    LogParam(static_cast<int>(p.state), l);
-    l->append(L", ");
-    LogParam(p.location, l);
-    l->append(L", ");
-    LogParam(p.children, l);
-    l->append(L")");
-  }
-};
-
 }  // namespace IPC
 
+
 #define MESSAGES_INTERNAL_FILE "chrome/common/render_messages_internal.h"
 #include "ipc/ipc_message_macros.h"
 
diff --git a/chrome/common/render_messages_internal.h b/chrome/common/render_messages_internal.h
index b7602d2..85ce45f 100644
--- a/chrome/common/render_messages_internal.h
+++ b/chrome/common/render_messages_internal.h
@@ -512,6 +512,20 @@ IPC_BEGIN_MESSAGES(View)
   // Used to instruct the RenderView to go into "view source" mode.
   IPC_MESSAGE_ROUTED0(ViewMsg_EnableViewSourceMode)
 
+  // Retreive information from the MSAA DOM subtree, for accessibility purposes.
+  IPC_SYNC_MESSAGE_ROUTED1_1(ViewMsg_GetAccessibilityInfo,
+                             webkit_glue::WebAccessibility::InParams
+                             /* input parameters */,
+                             webkit_glue::WebAccessibility::OutParams
+                             /* output parameters */)
+
+  // Requests the renderer to clear cashed accessibility information. Takes an
+  // id to clear a specific hashmap entry, and a bool; true clears all, false
+  // does not.
+  IPC_MESSAGE_ROUTED2(ViewMsg_ClearAccessibilityInfo,
+                      int  /* accessibility object id */,
+                      bool /* clear_all */)
+
   // Get all savable resource links from current webpage, include main
   // frame and sub-frame.
   IPC_MESSAGE_ROUTED1(ViewMsg_GetAllSavableResourceLinksForCurrentPage,
@@ -929,9 +943,6 @@ IPC_BEGIN_MESSAGES(View)
   // Notification that the list of extensions with web extents has been updated.
   IPC_MESSAGE_CONTROL1(ViewMsg_ExtensionExtentsUpdated,
                        ViewMsg_ExtensionExtentsUpdated_Params)
-
-  // Request a tree of Accessibility data from the render process.
-  IPC_MESSAGE_ROUTED0(ViewMsg_GetAccessibilityTree)
 IPC_END_MESSAGES(View)
 
 
@@ -2328,9 +2339,4 @@ IPC_BEGIN_MESSAGES(ViewHost)
                        int /* render_view_id */,
                        int /* bridge_id */)
 
-  // Send the tree of accessibility data to the browser, where it's cached
-  // in order to respond to OS accessibility queries immediately.
-  IPC_MESSAGE_ROUTED1(ViewHostMsg_AccessibilityTree,
-                      webkit_glue::WebAccessibility)
-
 IPC_END_MESSAGES(ViewHost)
diff --git a/chrome/common/render_messages_unittest.cc b/chrome/common/render_messages_unittest.cc
deleted file mode 100644
index 0dc3be8..0000000
--- a/chrome/common/render_messages_unittest.cc
+++ /dev/null
@@ -1,96 +0,0 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/scoped_ptr.h"
-#include "base/string16.h"
-#include "base/values.h"
-#include "chrome/common/render_messages.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-TEST(RenderMessagesUnittest, WebAccessibility) {
-  // Test a simple case.
-  webkit_glue::WebAccessibility input;
-  input.id = 123;
-  input.name = ASCIIToUTF16("name");
-  input.value = ASCIIToUTF16("value");
-  input.action = ASCIIToUTF16("action");
-  input.description = ASCIIToUTF16("description");
-  input.help = ASCIIToUTF16("help");
-  input.shortcut = ASCIIToUTF16("shortcut");
-  input.role = webkit_glue::WebAccessibility::ROLE_CHECKBUTTON;
-  input.state =
-      (1 << webkit_glue::WebAccessibility::STATE_CHECKED) |
-      (1 << webkit_glue::WebAccessibility::STATE_FOCUSED);
-  input.location = WebKit::WebRect(11, 22, 333, 444);
-
-  IPC::Message msg(1, 2, IPC::Message::PRIORITY_NORMAL);
-  IPC::WriteParam(&msg, input);
-
-  webkit_glue::WebAccessibility output;
-  void* iter = NULL;
-  EXPECT_TRUE(IPC::ReadParam(&msg, &iter, &output));
-  EXPECT_EQ(input.id, output.id);
-  EXPECT_EQ(input.name, output.name);
-  EXPECT_EQ(input.value, output.value);
-  EXPECT_EQ(input.action, output.action);
-  EXPECT_EQ(input.description, output.description);
-  EXPECT_EQ(input.help, output.help);
-  EXPECT_EQ(input.shortcut, output.shortcut);
-  EXPECT_EQ(input.role, output.role);
-  EXPECT_EQ(input.state, output.state);
-  EXPECT_EQ(input.location, output.location);
-  EXPECT_EQ(input.children.size(), output.children.size());
-
-  // Test a corrupt case.
-  IPC::Message bad_msg(1, 2, IPC::Message::PRIORITY_NORMAL);
-  bad_msg.WriteInt(99);
-  iter = NULL;
-  EXPECT_FALSE(IPC::ReadParam(&bad_msg, &iter, &output));
-
-  // Test a recursive case.
-  webkit_glue::WebAccessibility outer;
-  outer.id = 1000;
-  outer.name = ASCIIToUTF16("outer_name");
-  outer.role = webkit_glue::WebAccessibility::ROLE_GROUPING;
-  outer.state = 0;
-  outer.location = WebKit::WebRect(0, 0, 1000, 1000);
-  webkit_glue::WebAccessibility inner1;
-  inner1.id = 1001;
-  inner1.name = ASCIIToUTF16("inner1_name");
-  inner1.role = webkit_glue::WebAccessibility::ROLE_RADIOBUTTON;
-  inner1.state =
-      (1 << webkit_glue::WebAccessibility::STATE_CHECKED) |
-      (1 << webkit_glue::WebAccessibility::STATE_FOCUSED);
-  inner1.location = WebKit::WebRect(10, 10, 900, 400);
-  outer.children.push_back(inner1);
-  webkit_glue::WebAccessibility inner2;
-  inner2.id = 1002;
-  inner2.name = ASCIIToUTF16("inner2_name");
-  inner2.role = webkit_glue::WebAccessibility::ROLE_RADIOBUTTON;
-  inner2.state = (1 << webkit_glue::WebAccessibility::STATE_CHECKED);
-  inner2.location = WebKit::WebRect(10, 500, 900, 400);
-  outer.children.push_back(inner2);
-
-  IPC::Message msg2(1, 2, IPC::Message::PRIORITY_NORMAL);
-  IPC::WriteParam(&msg2, outer);
-
-  void* iter2 = NULL;
-  EXPECT_TRUE(IPC::ReadParam(&msg2, &iter2, &output));
-  EXPECT_EQ(outer.id, output.id);
-  EXPECT_EQ(outer.name, output.name);
-  EXPECT_EQ(outer.role, output.role);
-  EXPECT_EQ(outer.state, output.state);
-  EXPECT_EQ(outer.location, output.location);
-  EXPECT_EQ(outer.children.size(), output.children.size());
-  EXPECT_EQ(inner1.id, output.children[0].id);
-  EXPECT_EQ(inner1.name, output.children[0].name);
-  EXPECT_EQ(inner1.role, output.children[0].role);
-  EXPECT_EQ(inner1.state, output.children[0].state);
-  EXPECT_EQ(inner1.location, output.children[0].location);
-  EXPECT_EQ(inner2.id, output.children[1].id);
-  EXPECT_EQ(inner2.name, output.children[1].name);
-  EXPECT_EQ(inner2.role, output.children[1].role);
-  EXPECT_EQ(inner2.state, output.children[1].state);
-  EXPECT_EQ(inner2.location, output.children[1].location);
-}
diff --git a/chrome/renderer/render_thread.h b/chrome/renderer/render_thread.h
index f2ea2c3..680668c 100644
--- a/chrome/renderer/render_thread.h
+++ b/chrome/renderer/render_thread.h
@@ -261,8 +261,6 @@ class RenderThread : public RenderThreadBase,
 
   void OnGpuChannelEstablished(const IPC::ChannelHandle& channel_handle);
 
-  void OnGetAccessibilityTree();
-
   // Gather usage statistics from the in-memory cache and inform our host.
   // These functions should be call periodically so that the host can make
   // decisions about how to allocation resources using current information.
diff --git a/chrome/renderer/render_view.cc b/chrome/renderer/render_view.cc
index 339ae18..2aea82a 100644
--- a/chrome/renderer/render_view.cc
+++ b/chrome/renderer/render_view.cc
@@ -74,6 +74,7 @@
 #include "skia/ext/image_operations.h"
 #include "third_party/cld/encodings/compact_lang_det/win/cld_unicodetext.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebAccessibilityCache.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebAccessibilityObject.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebCString.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebDataSource.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebDevToolsAgent.h"
@@ -635,6 +636,9 @@ void RenderView::OnMessageReceived(const IPC::Message& message) {
         ViewMsg_GetSerializedHtmlDataForCurrentPageWithLocalLinks,
         OnGetSerializedHtmlDataForCurrentPageWithLocalLinks)
     IPC_MESSAGE_HANDLER(ViewMsg_GetApplicationInfo, OnGetApplicationInfo)
+    IPC_MESSAGE_HANDLER(ViewMsg_GetAccessibilityInfo, OnGetAccessibilityInfo)
+    IPC_MESSAGE_HANDLER(ViewMsg_ClearAccessibilityInfo,
+                        OnClearAccessibilityInfo)
     IPC_MESSAGE_HANDLER(ViewMsg_ShouldClose, OnMsgShouldClose)
     IPC_MESSAGE_HANDLER(ViewMsg_ClosePage, OnClosePage)
     IPC_MESSAGE_HANDLER(ViewMsg_ThemeChanged, OnThemeChanged)
@@ -680,7 +684,6 @@ void RenderView::OnMessageReceived(const IPC::Message& message) {
                         OnCustomContextMenuAction)
     IPC_MESSAGE_HANDLER(ViewMsg_TranslatePage, OnTranslatePage)
     IPC_MESSAGE_HANDLER(ViewMsg_RevertTranslation, OnRevertTranslation)
-    IPC_MESSAGE_HANDLER(ViewMsg_GetAccessibilityTree, OnGetAccessibilityTree)
 
     // Have the super handle all other messages.
     IPC_MESSAGE_UNHANDLED(RenderWidget::OnMessageReceived(message))
@@ -1331,10 +1334,14 @@ void RenderView::UpdateURL(WebFrame* frame) {
   // we don't want the transition type to persist.  Just clear it.
   navigation_state->set_transition_type(PageTransition::LINK);
 
+#if defined(OS_WIN)
   if (accessibility_.get()) {
-    accessibility_->clear();
+    // Remove accessibility info cache.
     accessibility_.reset();
   }
+#else
+  // TODO(port): accessibility not yet implemented. See http://crbug.com/8288.
+#endif
 }
 
 // Tell the embedding application that the title of the active page has changed
@@ -3904,16 +3911,46 @@ void RenderView::OnUpdateBrowserWindowId(int window_id) {
   browser_window_id_ = window_id;
 }
 
-void RenderView::OnGetAccessibilityTree() {
-  if (accessibility_.get()) {
+void RenderView::OnGetAccessibilityInfo(
+    const webkit_glue::WebAccessibility::InParams& in_params,
+    webkit_glue::WebAccessibility::OutParams* out_params) {
+#if defined(OS_WIN)
+  if (!accessibility_.get()) {
+    // TODO(dglazkov): Once implemented for all ports, remove lazy
+    // instantiation of accessibility_.
+    accessibility_.reset(WebAccessibilityCache::create());
+    accessibility_->initialize(webview());
+  }
+
+  out_params->return_code =
+      webkit_glue::WebAccessibility::GetAccObjInfo(accessibility_.get(),
+                                                  in_params,
+                                                  out_params);
+
+#else  // defined(OS_WIN)
+  // TODO(port): accessibility not yet implemented
+  NOTIMPLEMENTED();
+#endif
+}
+
+void RenderView::OnClearAccessibilityInfo(int acc_obj_id, bool clear_all) {
+#if defined(OS_WIN)
+  if (!accessibility_.get()) {
+    // If accessibility is not activated, ignore clearing message.
+    return;
+  }
+
+  if (clear_all) {
     accessibility_->clear();
+    return;
   }
-  accessibility_.reset(WebAccessibilityCache::create());
-  accessibility_->initialize(webview());
 
-  WebAccessibilityObject src_tree = webview()->accessibilityObject();
-  webkit_glue::WebAccessibility dst_tree(src_tree, accessibility_.get());
-  Send(new ViewHostMsg_AccessibilityTree(routing_id_, dst_tree));
+  accessibility_->remove(acc_obj_id);
+
+#else  // defined(OS_WIN)
+  // TODO(port): accessibility not yet implemented
+  NOTIMPLEMENTED();
+#endif
 }
 
 void RenderView::OnGetAllSavableResourceLinksForCurrentPage(
diff --git a/chrome/renderer/render_view.h b/chrome/renderer/render_view.h
index 0b4b2ab..bc68296 100644
--- a/chrome/renderer/render_view.h
+++ b/chrome/renderer/render_view.h
@@ -45,7 +45,6 @@
 #include "gfx/rect.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "testing/gtest/include/gtest/gtest_prod.h"
-#include "third_party/WebKit/WebKit/chromium/public/WebAccessibilityObject.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebConsoleMessage.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebContextMenuData.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebFrameClient.h"
@@ -497,8 +496,6 @@ class RenderView : public RenderWidget,
   // UserScript::DOCUMENT_IDLE.
   void OnUserScriptIdleTriggered(WebKit::WebFrame* frame);
 
-  void OnGetAccessibilityTree();
-
 #if defined(OS_MACOSX)
   // Helper routines for GPU plugin support. Used by the
   // WebPluginDelegateProxy, which has a pointer to the RenderView.
@@ -732,6 +729,10 @@ class RenderView : public RenderWidget,
   void OnExecuteCode(const ViewMsg_ExecuteCode_Params& params);
   void ExecuteCodeImpl(WebKit::WebFrame* frame,
                        const ViewMsg_ExecuteCode_Params& params);
+  void OnGetAccessibilityInfo(
+      const webkit_glue::WebAccessibility::InParams& in_params,
+      webkit_glue::WebAccessibility::OutParams* out_params);
+  void OnClearAccessibilityInfo(int acc_obj_id, bool clear_all);
 
   void OnExtensionMessageInvoke(const std::string& function_name,
                                 const ListValue& args,
@@ -1062,10 +1063,11 @@ class RenderView : public RenderWidget,
   bool decrement_shared_popup_at_destruction_;
 
   // TODO(port): revisit once we have accessibility
-
+#if defined(OS_WIN)
   // Handles accessibility requests into the renderer side, as well as
   // maintains the cache and other features of the accessibility tree.
   scoped_ptr<WebKit::WebAccessibilityCache> accessibility_;
+#endif
 
   // Resource message queue. Used to queue up resource IPCs if we need
   // to wait for an ACK from the browser before proceeding.
diff --git a/third_party/iaccessible2/ia2_api_all.idl b/third_party/iaccessible2/ia2_api_all.idl
deleted file mode 100644
index 2e4b1fa..0000000
--- a/third_party/iaccessible2/ia2_api_all.idl
+++ /dev/null
@@ -1,4263 +0,0 @@
-/*************************************************************************

- *

- *  File Name (IA2CommonTypes.idl)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2009

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-/** These constants control the scrolling of an object or substring into a window.

-

- This enum is used in IAccessible2::scrollTo and IAccessibleText::scrollSubstringTo.

-*/

-enum IA2ScrollType {

-

-  /** Scroll the top left corner of the object or substring such that the top left

-   corner (and as much as possible of the rest of the object or substring) is within

-   the top level window.  In cases where the entire object or substring fits within 

-   the top level window, the placement of the object or substring is dependent on 

-   the application.  For example, the object or substring may be scrolled to the 

-   closest edge, the furthest edge, or midway between those two edges.  In cases

-   where there is a hierarchy of nested scrollable controls, more than one control

-   may have to be scrolled.

-  */

-  IA2_SCROLL_TYPE_TOP_LEFT, 		

-

-  /** Scroll the bottom right corner of the object or substring such that the bottom right

-   corner (and as much as possible of the rest of the object or substring) is within

-   the top level window.  In cases where the entire object or substring fits within 

-   the top level window, the placement of the object or substring is dependent on 

-   the application.  For example, the object or substring may be scrolled to the 

-   closest edge, the furthest edge, or midway between those two edges.  In cases

-   where there is a hierarchy of nested scrollable controls, more than one control

-   may have to be scrolled.

-  */

-  IA2_SCROLL_TYPE_BOTTOM_RIGHT,

-

-  /** Scroll the top edge of the object or substring such that the top edge 

-   (and as much as possible of the rest of the object or substring) is within the

-   top level window.  In cases where the entire object or substring fits within 

-   the top level window, the placement of the object or substring is dependent on 

-   the application.  For example, the object or substring may be scrolled to the 

-   closest edge, the furthest edge, or midway between those two edges.  In cases

-   where there is a hierarchy of nested scrollable controls, more than one control

-   may have to be scrolled.

-  */

-  IA2_SCROLL_TYPE_TOP_EDGE,

-

-  /** Scroll the bottom edge of the object or substring such that the bottom edge 

-   (and as much as possible of the rest of the object or substring) is within the

-   top level window.  In cases where the entire object or substring fits within 

-   the top level window, the placement of the object or substring is dependent on 

-   the application.  For example, the object or substring may be scrolled to the 

-   closest edge, the furthest edge, or midway between those two edges.  In cases

-   where there is a hierarchy of nested scrollable controls, more than one control

-   may have to be scrolled.

-  */

-  IA2_SCROLL_TYPE_BOTTOM_EDGE, 

-

-  /** Scroll the left edge of the object or substring such that the left edge 

-   (and as much as possible of the rest of the object or substring) is within the

-   top level window.  In cases where the entire object or substring fits within 

-   the top level window, the placement of the object or substring is dependent on 

-   the application.  For example, the object or substring may be scrolled to the 

-   closest edge, the furthest edge, or midway between those two edges.  In cases

-   where there is a hierarchy of nested scrollable controls, more than one control

-   may have to be scrolled.

-  */

-  IA2_SCROLL_TYPE_LEFT_EDGE, 

-

-  /** Scroll the right edge of the object or substring such that the right edge 

-   (and as much as possible of the rest of the object or substring) is within the

-   top level window.  In cases where the entire object or substring fits within 

-   the top level window, the placement of the object or substring is dependent on 

-   the application.  For example, the object or substring may be scrolled to the 

-   closest edge, the furthest edge, or midway between those two edges.  In cases

-   where there is a hierarchy of nested scrollable controls, more than one control

-   may have to be scrolled.

-  */

-  IA2_SCROLL_TYPE_RIGHT_EDGE,

-

-  /** Scroll the object or substring such that as much as possible of the 

-   object or substring is within the top level window.  The placement of 

-   the object is dependent on the application.  For example, the object or

-   substring may be scrolled to to closest edge, the furthest edge, or midway

-   between those two edges.

-  */

-  IA2_SCROLL_TYPE_ANYWHERE

-};

-

-/** These constants define which coordinate system a point is located in.

- 

- This enum is used in IAccessible2::scrollToPoint, IAccessibleImage::imagePosition,

- IAccessibleText::characterExtents, and IAccessibleText::offsetAtPoint, and 

- IAccessibleText::scrollSubstringToPoint.

-*/

-enum IA2CoordinateType {

-

-  /// The coordinates are relative to the screen.

-  IA2_COORDTYPE_SCREEN_RELATIVE, 

-

-  /** The coordinates are relative to the upper left corner of the bounding box

-   of the immediate parent.

-  */

-  IA2_COORDTYPE_PARENT_RELATIVE  

-

-};

-

-/** Special offsets for use in IAccessibleText and IAccessibleEditableText methods

-  

-  Refer to @ref _specialOffsets 

-  "Special Offsets for use in the IAccessibleText and IAccessibleEditableText Methods" 

-  for more information.

-*/

-enum IA2TextSpecialOffsets {

-  IA2_TEXT_OFFSET_LENGTH = -1,	/**< This offset is equivalent to the length of the string.  It eliminates

-								 the need to call IAccessibleText::nCharacters. */

-  IA2_TEXT_OFFSET_CARET = -2	/**< This offset signifies that the text related to the physical location

-								 of the caret should be used. */

-};

-

-/** These constants specify the kind of change made to a table.

-

-   This enum is used in the IA2TableModelChange struct which in turn is used by

-   IAccessibleTable::modelChange and IAccessibleTable2::modelChange.

-*/

-enum IA2TableModelChangeType {

-  IA2_TABLE_MODEL_CHANGE_INSERT,  // = 0;

-  IA2_TABLE_MODEL_CHANGE_DELETE,

-  IA2_TABLE_MODEL_CHANGE_UPDATE

-};

-

-/** A structure defining the type of and extents of changes made to a table

- 

- IAccessibleTable::modelChange and IAccessibleTable2::modelChange return this struct.

- In the case of an insertion or change the row and column offsets define the boundaries

- of the inserted or changed subtable after the operation.  In the case of a deletion

- the row and column offsets define the boundaries of the subtable being removed before

- the removal.

-*/

-typedef struct IA2TableModelChange {

-  enum IA2TableModelChangeType type;	// insert, delete, update

-  long firstRow;		///< 0 based, inclusive

-  long lastRow;			///< 0 based, inclusive

-  long firstColumn;		///< 0 based, inclusive

-  long lastColumn;		///< 0 based, inclusive

-} IA2TableModelChange;

-/*************************************************************************

- *

- *  File Name (AccessibleRelation.idl)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2009

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-import "objidl.idl";

-import "oaidl.idl";

-import "oleacc.idl";

-

-/** @defgroup grpRelations Relations 

-  Use the following constants to compare against the BSTRs returned by 

-  IAccessibleRelation::relationType.

-*/ 

-///@{

-

-/** Some attribute of this object is affected by a target object. */

-const WCHAR *const IA2_RELATION_CONTROLLED_BY = L"controlledBy";

-

-/** This object is interactive and controls some attribute of a target object. */

-const WCHAR *const IA2_RELATION_CONTROLLER_FOR = L"controllerFor";

-

-/** This object is described by the target object. */

-const WCHAR *const IA2_RELATION_DESCRIBED_BY = L"describedBy";

-

-/** This object is describes the target object. */

-const WCHAR *const IA2_RELATION_DESCRIPTION_FOR = L"descriptionFor";

-

-/** This object is embedded by a target object. */

-const WCHAR *const IA2_RELATION_EMBEDDED_BY = L"embeddedBy";

-

-/** This object embeds a target object. This relation can be used on the

- OBJID_CLIENT accessible for a top level window to show where the content 

- areas are.

-*/

-const WCHAR *const IA2_RELATION_EMBEDS = L"embeds";

-

-/** Content flows to this object from a target object. 

- This relation and IA2_RELATION_FLOWS_TO are useful to tie text and non-text

- objects together in order to allow assistive technology to follow the

- intended reading order.

-*/

-const WCHAR *const IA2_RELATION_FLOWS_FROM = L"flowsFrom";

-

-/** Content flows from this object to a target object. */

-const WCHAR *const IA2_RELATION_FLOWS_TO = L"flowsTo";

-

-/** This object is label for a target object. */

-const WCHAR *const IA2_RELATION_LABEL_FOR = L"labelFor";

-

-/** This object is labelled by a target object. Note that the double L spelling

- which follows is preferred.  Please use it instead.  This single L version may

- be removed in a later version.

-*/

-const WCHAR *const IA2_RELATION_LABELED_BY = L"labelledBy";

-

-/** This object is labelled by a target object. */

-const WCHAR *const IA2_RELATION_LABELLED_BY = L"labelledBy";

-

-/** This object is a member of a group of one or more objects. When 

- there is more than one object in the group each member may have one and the 

- same target, e.g. a grouping object.  It is also possible that each member has 

- multiple additional targets, e.g. one for every other member in the group.

-*/

-const WCHAR *const IA2_RELATION_MEMBER_OF = L"memberOf";

-

-/** This object is a child of a target object. */

-const WCHAR *const IA2_RELATION_NODE_CHILD_OF = L"nodeChildOf";

-

-/** This object is a parent window of the target object. */

-const WCHAR *const IA2_RELATION_PARENT_WINDOW_OF = L"parentWindowOf";

-

-/** This object is a transient component related to the target object. 

- When this object is activated the target object doesn't loose focus.

-*/

-const WCHAR *const IA2_RELATION_POPUP_FOR = L"popupFor";

-

-/** This object is a sub window of a target object. */

-const WCHAR *const IA2_RELATION_SUBWINDOW_OF = L"subwindowOf";

-

-///@}

-

-/// This interface gives access to an object's set of relations.

-[object, uuid(7CDF86EE-C3DA-496a-BDA4-281B336E1FDC)]

-interface IAccessibleRelation : IUnknown

-{

-  /** @brief Returns the type of the relation.

-   @param [out] relationType

-    The strings returned are defined @ref grpRelations "in this section of the documentation".

-   @retval S_OK

-  */

-  [propget] HRESULT relationType

-    (

-     [out, retval] BSTR *relationType

-    );

-

-  /** @brief Returns a localized version of the relation type.

-   @param [out] localizedRelationType

-   @retval S_OK

-  */

-  [propget] HRESULT localizedRelationType

-    (

-     [out, retval] BSTR *localizedRelationType

-    );

-

-  /** @brief Returns the number of targets for this relation.

-   @param [out] nTargets

-   @retval S_OK

-  */

-  [propget] HRESULT nTargets

-    (

-     [out, retval] long *nTargets

-    );

-

-  /** @brief Returns one accessible relation target.

-   @param [in] targetIndex

-    0 based index

-   @param [out] target

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL

-   @retval E_INVALIDARG if bad [in] passed, [out] value is NULL 

-   @note Use QueryInterface to get IAccessible2.

-  */

-  [propget] HRESULT target

-    (

-     [in] long targetIndex,

-     [out, retval] IUnknown **target 

-    );

-

-  /** @brief Returns multiple accessible relation targets

-   @param [in] maxTargets

-    maximum size of the array allocated by the client

-   @param [out] targets

-    The array of target objects.  Note that this array is to be allocated by the

-	client and freed when no longer needed.  Refer to @ref _arrayConsideration 

-	"Special Consideration when using Arrays" for more details.  You will need to use 

-	QueryInterface on the IUnknown to get the IAccessible2.

-   @param [out] nTargets

-	actual number of targets in the returned array (not more than maxTargets)

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, nTargets is set to 0

-  */

-  [propget] HRESULT targets

-    (

-     [in] long maxTargets, 

-     [out, size_is(maxTargets), length_is(*nTargets)]

-       IUnknown **targets, 

-     [out, retval] long *nTargets 

-    );

-

-}

-/*************************************************************************

- *

- *  File Name (AccessibleAction.idl)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2008

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-import "objidl.idl";

-import "oaidl.idl";

-import "oleacc.idl";

-        

-/** @brief This interface gives access to actions that can be executed

-  for accessible objects.

-

- Every accessible object that can be manipulated via the native GUI beyond the 

-  methods available either in the MSAA IAccessible interface or in the set of 

-  IAccessible2 interfaces (other than this IAccessibleAction interface) should 

-  support the IAccessibleAction interface in order to provide Assistive Technology

-  access to all the actions that can be performed by the object.  Each action can 

-  be performed or queried for a name, description or associated key bindings.  

-  Actions are needed more for ATs that assist the mobility impaired, such as

-  on-screen keyboards and voice command software.  By providing actions directly,

-  the AT can present them to the user without the user having to perform the extra

-  steps to navigate a context menu.

-

- The first action should be equivalent to the MSAA default action.  If there is 

-  only one action, %IAccessibleAction should also be implemented.

-*/

-[object, uuid(B70D9F59-3B5A-4dba-AB9E-22012F607DF5)]

-interface IAccessibleAction : IUnknown

-{

-

-  /** @brief Returns the number of accessible actions available in this object.

-    

-   If there are more than one, the first one is considered the

-    "default" action of the object.

-   @param [out] nActions

-    The returned value of the number of actions is zero if there are

-    no actions.

-   @retval S_OK

-   @note This method is missing a [propget] prefix in the IDL.  The result is the

-    method is named nActions in generated C++ code instead of get_nActions.

-  */

-  HRESULT nActions

-    (

-     [out,retval] long* nActions

-    );

-

-  /** @brief Performs the specified Action on the object.

-   @param [in] actionIndex

-    0 based index specifying the action to perform.  If it lies outside

-    the valid range no action is performed.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed 

-    */

-  HRESULT doAction

-    (

-     [in] long actionIndex

-    );

-

-  /** @brief Returns a description of the specified action of the object.

-   @param [in] actionIndex

-    0 based index specifying which action's description to return.

-    If it lies outside the valid range an empty string is returned.

-   @param [out] description

-    The returned value is a localized string of the specified action.

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL 

-   @retval E_INVALIDARG if bad [in] passed, [out] value is NULL 

-    */

-  [propget] HRESULT description

-    (

-     [in] long actionIndex,

-     [out, retval] BSTR *description

-    );

-

-  /** @brief Returns an array of BSTRs describing one or more key bindings, if

-   there are any, associated with the specified action.

-

-   The returned strings are the localized human readable key sequences to be

-   used to activate each action, e.g. "Ctrl+Shift+D".  Since these key

-   sequences are to be used when the object has focus, they are like

-   mnemonics (access keys), and not like shortcut (accelerator) keys.

-

-   There is no need to implement this method for single action controls since

-   that would be redundant with the standard MSAA programming practice of

-   getting the mnemonic from get_accKeyboardShortcut.

-

-   An AT such as an On Screen Keyboard might not expose these bindings but

-   provide alternative means of activation.

-

-   Note: the client allocates and passes in an array of pointers.  The server

-   allocates the BSTRs and passes back one or more pointers to these BSTRs into

-   the array of pointers allocated by the client.  The client is responsible 

-   for deallocating the BSTRs.

-

-   @param [in] actionIndex

-    0 based index specifying which action's key bindings should be returned.

-   @param [in] nMaxBindings

-    This parameter is ignored. Refer to @ref _arrayConsideration

-	"Special Consideration when using Arrays" for more details.

-   @param [out] keyBindings

-    An array of BSTRs, allocated by the server, one for each key binding.

-	Free it with CoTaskMemFree.

-   @param [out] nBindings

-    The number of key bindings returned; the size of the returned array.

-   @retval S_OK

-   @retval S_FALSE if there are no relations, [out] values are NULL and 0 respectively 

-   @retval E_INVALIDARG if bad [in] passed, [out] values are NULL and 0 respectively 

-	*/

-  [propget] HRESULT keyBinding

-    (

-     [in] long actionIndex,

-     [in] long nMaxBindings,

-     [out, size_is(,nMaxBindings), length_is(,*nBindings)] BSTR **keyBindings,

-	 [out, retval] long *nBindings

-    );

-

-  /** @brief Returns the non-localized name of specified action.

-   @param [in] actionIndex

-    0 based index specifying which action's non-localized name should be returned.

-   @param [out] name

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL 

-   @retval E_INVALIDARG if bad [in] passed, [out] value is NULL 

-   */

-  [propget] HRESULT name

-    (

-     [in] long actionIndex,

-     [out, retval] BSTR *name

-    );

-

-  /** @brief Returns the localized name of specified action.

-   @param [in] actionIndex

-    0 based index specifying which action's localized name should be returned.

-   @param [out] localizedName

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL 

-   @retval E_INVALIDARG if bad [in] passed, [out] value is NULL 

-   */

-  [propget] HRESULT localizedName

-    (

-     [in] long actionIndex,

-     [out, retval] BSTR *localizedName

-    );

-

-}

-/*************************************************************************

- *

- *  File Name (AccessibleRole.idl)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2008

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-import "objidl.idl";

-

-/** Collection of roles

-

-  This enumerator defines an extended set of accessible roles of objects implementing

-  the %IAccessible2 interface. These roles are in addition to the MSAA roles obtained

-  through the MSAA get_accRole method.  Examples are 'footnote', 'heading', and 

-  'label'. You obtain an object's %IAccessible2 roles by calling IAccessible2::role.

-*/

-enum IA2Role {

-

-  /** Unknown role. The object contains some Accessible information, but its 

-   role is not known.

-  */

-  IA2_ROLE_UNKNOWN = 0,

-

-  /** An object that can be drawn into and to manage events from the objects

-   drawn into it.  Also refer to ::IA2_ROLE_FRAME,

-   ::IA2_ROLE_GLASS_PANE, and ::IA2_ROLE_LAYERED_PANE. 

-  */

-  IA2_ROLE_CANVAS = 0x401,

-

-  /// A caption describing another object.

-  IA2_ROLE_CAPTION,

-

-  /// Used for check buttons that are menu items.

-  IA2_ROLE_CHECK_MENU_ITEM,

-

-  /// A specialized dialog that lets the user choose a color.

-  IA2_ROLE_COLOR_CHOOSER,

-

-  /// A date editor.

-  IA2_ROLE_DATE_EDITOR,

-

-  /** An iconified internal frame in an ::IA2_ROLE_DESKTOP_PANE. 

-   Also refer to ::IA2_ROLE_INTERNAL_FRAME.

-  */

-  IA2_ROLE_DESKTOP_ICON,

-

-  /** A desktop pane. A pane that supports internal frames and iconified 

-   versions of those internal frames.  Also refer to ::IA2_ROLE_INTERNAL_FRAME.

-  */

-  IA2_ROLE_DESKTOP_PANE,

-

-  /** A directory pane. A pane that allows the user to navigate through 

-   and select the contents of a directory. May be used by a file chooser.   

-   Also refer to ::IA2_ROLE_FILE_CHOOSER.

-  */

-  IA2_ROLE_DIRECTORY_PANE,

-

-  /** An editable text object in a toolbar.

-   <BR><B>Note:</B> This role has been deprecated.  The edit bar role was meant

-   for a text area in a tool bar. However, to detect a text area in a tool bar

-   the AT can query the parent.

-  */

-  IA2_ROLE_EDITBAR,

-

-  /// Embedded (OLE) object.

-  IA2_ROLE_EMBEDDED_OBJECT,

-

-  /// Text that is used as an endnote (footnote at the end of a chapter or section).

-  IA2_ROLE_ENDNOTE,

-

-  /** A file chooser. A specialized dialog that displays the files in the 

-   directory and lets the user select a file, browse a different directory, 

-   or specify a filename. May use the directory pane to show the contents of 

-   a directory.  

-   Also refer to ::IA2_ROLE_DIRECTORY_PANE.

-  */

-  IA2_ROLE_FILE_CHOOSER,

-

-  /** A font chooser. A font chooser is a component that lets the user pick 

-   various attributes for fonts.

-  */

-  IA2_ROLE_FONT_CHOOSER,

-

-  /** Footer of a document page.

-   Also refer to ::IA2_ROLE_HEADER.

-  */

-  IA2_ROLE_FOOTER,

-

-  /// Text that is used as a footnote.  Also refer to ::IA2_ROLE_ENDNOTE.

-  IA2_ROLE_FOOTNOTE,

-

-  /** A container of form controls.  An example of the use of this role is to

-   represent an HTML FORM tag.

-  */

-  IA2_ROLE_FORM,

-

-  /** Frame role. A top level window with a title bar, border, menu bar, etc.  

-   It is often used as the primary window for an application.  Also refer to

-   ::IA2_ROLE_CANVAS and the MSAA roles of dialog and window.

-  */

-  IA2_ROLE_FRAME,

-

-  /** A glass pane. A pane that is guaranteed to be painted on top of all panes

-   beneath it.  Also refer to ::IA2_ROLE_CANVAS, ::IA2_ROLE_INTERNAL_FRAME, and

-   ::IA2_ROLE_ROOT_PANE.

-  */

-  IA2_ROLE_GLASS_PANE,

-

-  /** Header of a document page.

-   Also refer to ::IA2_ROLE_FOOTER.

-  */

-  IA2_ROLE_HEADER,

-

-  /// Heading.  Use the IAccessible2::attributes heading-level attribute to determine the heading level.

-  IA2_ROLE_HEADING,

-

-  /// A small fixed size picture, typically used to decorate components.

-  IA2_ROLE_ICON,

-

-  /** An image map object.  Usually a graphic with multiple hotspots, where 

-   each hotspot can be activated resulting in the loading of another document

-   or section of a document.

-  */

-  IA2_ROLE_IMAGE_MAP,

-

-  /** An object which is used to allow input of characters not found on a keyboard,

-   such as the input of Chinese characters on a Western keyboard.

-  */

-  IA2_ROLE_INPUT_METHOD_WINDOW,

-

-  /** An internal frame. A frame-like object that is clipped by a desktop pane.  

-   The desktop pane, internal frame, and desktop icon objects are often used to 

-   create multiple document interfaces within an application.

-   Also refer to ::IA2_ROLE_DESKTOP_ICON, ::IA2_ROLE_DESKTOP_PANE, and ::IA2_ROLE_FRAME.

-  */

-  IA2_ROLE_INTERNAL_FRAME,

-

-  /// An object used to present an icon or short string in an interface.

-  IA2_ROLE_LABEL,

-

-  /** A layered pane. A specialized pane that allows its children to be drawn 

-   in layers, providing a form of stacking order. This is usually the pane that 

-   holds the menu bar as  well as the pane that contains most of the visual 

-   components in a window.

-   Also refer to ::IA2_ROLE_CANVAS, ::IA2_ROLE_GLASS_PANE, and ::IA2_ROLE_ROOT_PANE.

-  */

-  IA2_ROLE_LAYERED_PANE,

-

-  /// An embedded note which is not visible until activated.

-  IA2_ROLE_NOTE,

-

- /** A specialized pane whose primary use is inside a dialog.

-   Also refer to MSAA's dialog role.

-  */

-  IA2_ROLE_OPTION_PANE,

-

-  /** An object representing a page of document content.  It is used in documents

-   which are accessed by the user on a page by page basis.

-  */

-  IA2_ROLE_PAGE,

-

-  /// A paragraph of text.

-  IA2_ROLE_PARAGRAPH,

-

-  /** A radio button that is a menu item.

-   Also refer to MSAA's button and menu item roles.

-  */

-  IA2_ROLE_RADIO_MENU_ITEM,

-

-  /** An object which is redundant with another object in the accessible hierarchy.

-   ATs typically ignore objects with this role.

-  */

-  IA2_ROLE_REDUNDANT_OBJECT,

-

-  /** A root pane. A specialized pane that has a glass pane and a layered pane 

-   as its children.

-   Also refer to ::IA2_ROLE_GLASS_PANE and ::IA2_ROLE_LAYERED_PANE

-  */

-  IA2_ROLE_ROOT_PANE,

-

-  /** A ruler such as those used in word processors.

-  */

-  IA2_ROLE_RULER,

-

-  /** A scroll pane. An object that allows a user to incrementally view a large 

-   amount of information.  Its children can include scroll bars and a viewport.

-   Also refer to ::IA2_ROLE_VIEW_PORT and MSAA's scroll bar role.

-  */

-  IA2_ROLE_SCROLL_PANE,

-

-  /** A container of document content.  An example of the use of this role is to

-   represent an HTML DIV tag.  A section may be used as a region.  A region is a 

-   group of elements that together form a perceivable unit.  A region does not 

-   necessarily follow the logical structure of the content, but follows the 

-   perceivable structure of the page.  A region may have an attribute in the set 

-   of IAccessible2::attributes which indicates that it is "live".  A live region 

-   is content that is likely to change in response to a timed change, a user 

-   event, or some other programmed logic or event.

-  */

-  IA2_ROLE_SECTION,

-

-  /// Object with graphical representation used to represent content on draw pages.

-  IA2_ROLE_SHAPE,

-

-  /** A split pane. A specialized panel that presents two other panels at the 

-   same time. Between the two panels is a divider the user can manipulate to make 

-   one panel larger and the other panel smaller.

-  */

-  IA2_ROLE_SPLIT_PANE,

-

-  /** An object that forms part of a menu system but which can be "undocked" 

-   from or "torn off" the menu system to exist as a separate window.

-  */

-  IA2_ROLE_TEAR_OFF_MENU,

-

-  /// An object used as a terminal emulator.

-  IA2_ROLE_TERMINAL,

-

-  /// Collection of objects that constitute a logical text entity.

-  IA2_ROLE_TEXT_FRAME,

-

-  /** A toggle button. A specialized push button that can be checked or unchecked, 

-   but does not provide a separate indicator for the current state.

-   Also refer to MSAA's roles of push button, check box, and radio button.

-   <BR><B>Note:</B> IA2_ROLE_TOGGLE_BUTTON should not be used.  Instead, use MSAA's 

-   ROLE_SYSTEM_PUSHBUTTON and STATE_SYSTEM_PRESSED.

-  */

-  IA2_ROLE_TOGGLE_BUTTON,

-

-  /** A viewport. An object usually used in a scroll pane. It represents the 

-   portion of the entire data that the user can see. As the user manipulates 

-   the scroll bars, the contents of the viewport can change.

-   Also refer to ::IA2_ROLE_SCROLL_PANE.

-  */

-  IA2_ROLE_VIEW_PORT

-  

-};

-/*************************************************************************

- *

- *  File Name (AccessibleStates.idl)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2008

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-import "objidl.idl";

-

-typedef long AccessibleStates;

-

-/** %IAccessible2 specific state bit constants

-

-  This enum defines the state bits returned by IAccessible2::states.  The 

-  %IAccessible2 state bits are in addition to those returned by MSAA.

-*/

-enum IA2States {

-

-/** Indicates a window is currently the active window, or is an active subelement 

-  within a container or table.

-

- This state can be used to indicate the current active item in a container, even 

-  if the container itself is not currently active. In other words this would indicate

-  the item that will get focus if you tab to the container.

-

- This information is important for knowing what to report for trees and potentially 

-  other containers in a virtual buffer.

-

- Also, see ::IA2_STATE_MANAGES_DESCENDANTS for more information.

-*/

-IA2_STATE_ACTIVE =					0x1,

-

-/** Indicates that the object is armed.

-

- Used to indicate that the control is "pressed" and will be invoked when the 

-  actuator, e.g. a mouse button, is "released".  An AT which either monitors the 

-  mouse or synthesizes mouse events might need to know that, and possibly a talking

-  interface would even let the user know about it.  It could also potentially be

-  useful to on screen keyboards or test tools since the information does indicate

-  something about the state of the interface, for example, code operating asynchronously

-  might need to wait for the armed state to change before doing something else.

-

-*/

-IA2_STATE_ARMED =					0x2,

-

-/** Indicates the user interface object corresponding to this object no longer exists. */

-IA2_STATE_DEFUNCT =					0x4,

-

-/** Indicates the user can change the contents of this object. */

-IA2_STATE_EDITABLE =				0x8,

-

-/** Indicates the orientation of this object is horizontal. */

-IA2_STATE_HORIZONTAL =				0x10,

-

-/** Indicates this object is minimized and is represented only by an icon. */

-IA2_STATE_ICONIFIED =				0x20,

-

-/** Indicates an input validation failure. */

-IA2_STATE_INVALID_ENTRY =			0x40,

-

-/** Indicates that this object manages its children.

-

- Note: Due to the fact that MSAA's WinEvents don't allow the active child index

-  to be passed on the IA2_EVENT_ACTIVE_DESCENDANT_CHANGED event, the manages

-  descendants	scheme can't be used.  Instead the active child object has to fire

-  MSAA's EVENT_OBJECT_FOCUS.  In a future release a new event mechanism may be

-  added to provide for event specific data to be passed with the event.  At that

-  time the IA2_EVENT_ACTIVE_DECENDENT_CHANGED event and

-  IA2_STATE_MANAGES_DESCENDANTS state would be useful.

-*/

-IA2_STATE_MANAGES_DESCENDANTS =		0x80,

-

-/** Indicates that an object is modal.

-

- Modal objects have the behavior that something must be done with the object 

-  before the user can interact with an object in a different window.

-*/

-IA2_STATE_MODAL =					0x100,

-

-/** Indicates this text object can contain multiple lines of text. */

-IA2_STATE_MULTI_LINE =				0x200,

-

-/** Indicates this object paints every pixel within its rectangular region. */

-IA2_STATE_OPAQUE =					0x400,

-

-/** Indicates that user interaction is required.

-

- An example of when this state is used is when a field in a form must be filled 

-  before a form can be processed.

-*/

-IA2_STATE_REQUIRED =				0x800,

-

-/** Indicates an object which supports text selection.

-

- Note: This is different than MSAA STATE_SYSTEM_SELECTABLE.

-*/

-IA2_STATE_SELECTABLE_TEXT =			0x1000,

-

-/** Indicates that this text object can contain only a single line of text. */

-IA2_STATE_SINGLE_LINE =				0x2000,

-

-/** Indicates that the accessible object is stale.

-

- This state is used when the accessible object no longer accurately 

-  represents the state of the object which it is representing such as when an

-  object is transient or when an object has been or is in the process of being

-  destroyed or when the object's index in its parent has changed.

-*/

-IA2_STATE_STALE =					0x4000,

-

-/** Indicates that the object implements autocompletion.

-

- This state indicates that a text control will respond to the input of 

- one ore more characters and cause a sub-item to become selected.  The 

- selection may also result in events fired on the parent object.

-*/

-IA2_STATE_SUPPORTS_AUTOCOMPLETION =	0x8000,

-

-/** Indicates this object is transient.

-

- An object has this state when its parent object has the state ::IA2_STATE_MANAGES_DESCENDANTS.

- For example, a list item object may be managed by its parent list object and may only 

- exist as long as the object is actually rendered.  Similarly a table cell's accessible 

- object may exist only while the cell has focus.  However, from the perspective of an 

- assistive technology a transient object behaves like a non-transient object.  As a 

- result it is likely that this state is not of use to an assistive technology, but it 

- is provided in case an assistive technology determines that knowledge of the transient 

- nature of the object is useful and also for harmony with the Linux accessibility API.

-

- Also, see ::IA2_STATE_MANAGES_DESCENDANTS for more information.

- */

-IA2_STATE_TRANSIENT =				0x10000,

-

-/** Indicates the orientation of this object is vertical. */

-IA2_STATE_VERTICAL =				0x20000

-

-};

-/*************************************************************************

- *

- *  File Name (Accessible2.idl)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2009

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-/** @mainpage

-

- @section _interfaces Interfaces

-  IAccessible2\n

-  IAccessibleAction\n

-  IAccessibleApplication\n

-  IAccessibleComponent\n

-  IAccessibleHypertext\n

-  IAccessibleHyperlink\n

-  IAccessibleImage\n

-  IAccessibleRelation\n

-  IAccessibleTable [deprecated]\n

-  IAccessibleTable2\n

-  IAccessibleTableCell\n

-  IAccessibleText\n

-  IAccessibleEditableText\n

-  IAccessibleValue

-

- @section _structs Structs

-  IA2Locale\n

-  IA2TableModelChange\n

-  IA2TextSegment

-

- @section _enums Enums

-  ::IA2CoordinateType values define the requested coordinate type (screen or parent window).\n

-  ::IA2EventID values identify events.\n

-  ::IA2Role values defines roles which are in addition to the existing MSAA roles.\n

-  ::IA2ScrollType values define where to place an object or substring on the screen.\n

-  ::IA2States values define states which are in addition to the existing MSAA states.\n

-  ::IA2TableModelChangeType values describe the kinds of changes made to a table (insert, delete, update).\n

-  ::IA2TextBoundaryType values define the requested text unit (character, word, sentence, line, paragraph).\n

-  ::IA2TextSpecialOffsets values define special offsets for use in the text interfaces.

-

- @section _constants Constants

-  @ref grpRelations

-

- @section _misc Miscellaneous

-  @ref _licensePage "LGPL License"\n

-  @ref _generalInfo "General Information"\n

-

- @page _licensePage LGPL License

-  IAccessible2 IDL Specification

-

-  Copyright (c) Linux Foundation 2007, 2008\n

-  Copyright (c) IBM Corp. 2006\n

-  Copyright (c) Sun Microsystems, Inc. 2000, 2006

-

-  This library is free software; you can redistribute it and/or

-  modify it under the terms of the GNU Lesser General Public

-  License version 2.1, as published by the Free Software Foundation; either

-  version 2.1 of the License, or (at your option) any later version.

-

-  This library is distributed in the hope that it will be useful,

-  but WITHOUT ANY WARRANTY; without even the implied warranty of

-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

-  Lesser General Public License for more details.

-

-  You should have received a copy of the GNU Lesser General Public

-  License along with this library; if not, write to the Free Software

-  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

-

-  You may also refer to http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html

-

- @page _generalInfo General Information 

-  The following information is applicable to two or more interfaces.

-

- @ref _errors\n

- @ref _memory\n

- &nbsp;&nbsp;@ref _arrayConsideration\n

- @ref _indexes\n

- @ref _enums\n

- @ref _specialOffsets\n

- @ref _dicoveringInterfaces\n

- @ref _changingInterfaces\n

- @ref _applicationInfo\n

- @ref _childIDs\n

- @ref _variants\n

- @ref _iaaction-iahyperlink\n

- @ref _trademark

-

- @section _errors Error Handling

-  HRESULT values are defined by the Microsoft&reg; Win32&reg; API.  For more information, refer to 

-  <a href="http://msdn2.microsoft.com/en-us/library/bb401631.aspx">Interpreting HRESULT Values</a>

-  in MSDN&reg;.

-

-  Note that the S_FALSE return value is considered a non-error value and the 

-  SUCCEEDED macro will return TRUE.  S_FALSE is used when there is no failure

-  but there was nothing valid to return, e.g. in IAccessible2::attributes when

-  there are no attributes.  When S_FALSE is returned [out] pointer types should 

-  be NULL and [out] longs should generally be 0, but sometimes -1 is used such

-  as IAccessible2::indexInParent, IAccessibleText::caretOffset, and

-  IAccessibleHypertext::hyperlinkIndex.

-

-  Note that for BSTR [out] variables common COM practice is that the server does 

-  the SysAllocString and the client does the SysFreeString.  Also note that when

-  NULL is returned there is no need for the client to call SysFreeString.  Please

-  refer to the documentation for each method for more details regarding error handling.

-

- @section _memory Memory Management

-  The following memory management issues should be considered:

-  @li Although [out] BSTR variables are declared by the client, their space is 

-   allocated by the server.  They need to be freed with SysFreeString by the 

-   client at end of life; the same is true when BSTRs are used in structs or 

-   arrays which are passed to the server.

-  @li If there is no valid [out] BSTR to return, the server should return S_FALSE and 

-   assign NULL to the output, e.g. *theOutBSTR = NULL;. 

-  @li COM interfaces need to be referenced with AddRef when used and dereferenced

-   with Release at end of life.

-  @li Single [out] longs, HWNDs, booleans, and structs are declared by the caller

-   and passed by reference. The marshaller does all the memory management.

-  

-  The following articles may be helpful for understanding memory management issues:

-  @li An article by Don Box in a

-   <a href="http://www.microsoft.com/msj/1196/activex1196.aspx">Q & A section</a>

-   of the November 1996 edition of the Microsoft Systems Journal.

-  @li A posting to a CodeGuru forum, 

-   <a href="http://www.codeguru.com/forum/showthread.php?t=364511">Windows SDK 

-   String: What are the rules for BSTR allocation and deallocation?</a>

-

- @subsection _arrayConsideration Special Consideration when using Arrays

-  There are several methods which return arrays.  It is considered a best practice

-  for the client to allocate and free the arrays.  This can be done for 

-  IAccessible2::relations and IAccessibleRelation::targets.  However, due to the

-  coding of the IDL for the remaining methods which return arrays, the server must

-  allocate the array and the client must free the array when no longer needed.  

-  These methods are IAccessible2::extendedStates, IAccessible2::localizedExtendedStates, 

-  IAccessibleAction::keyBinding, IAccessibleTable::selectedChildren, 

-  IAccessibleTable::selectedColumns, and IAccessibleTable::selectedRows.  For those 

-  methods, the server must allocate both the top level array and any storage 

-  associated with it, e.g. for BSTRs.  The client must use CoTaskMemFree to free

-  the array and any BSTRs must be freed with SysFreeString.  

-  

-  Also, the IDL for those methods includes an extraneous [in] parameter for the 

-  caller to specify the max size of the array.  This parameter will be ignored by 

-  the COM server.

-

- @section _indexes Zero and One Based Indexes

-  Unless otherwise specified all offsets and indexes are 0 based. 

-

- @section _enums Enums

-  Note that enums start at 0.

-

- @section _specialOffsets Special Offsets for use in the IAccessibleText and IAccessibleEditableText Methods

-  IAccessibleText and IAccessibleEditableText can use one or more of the following

-  special offset values.  They are defined in the ::IA2TextSpecialOffsets enum.

-  @li Using ::IA2_TEXT_OFFSET_LENGTH (-1) as an offset in any of the IAccessibleText or

-   IAccessibleEditableText methods is the same as specifying the length of the string.

-  @li Using ::IA2_TEXT_OFFSET_CARET (-2) as an offset for IAccessibleText::textBeforeOffset, 

-   IAccessibleText::textAtOffset, and IAccessibleText::textAfterOffset indicates that the 

-   text related to the physical location of the caret should be used.  This is needed for 

-   applications that consider the character offset of the end of one line (as reached by 

-   pressing the End key) the same as the offset of the first character on the next line.

-   Since the same offset is associated with two different lines a special means is needed 

-   to fetch text from the line where the caret is physically located.

-

- @section _dicoveringInterfaces Discovery of Interfaces

-  In general AT (Assistive Technology) should try IAccessible2 interfaces, followed by using 

-  the MSAA (Microsoft&reg; Active Accessibility&reg;) interfaces.  (In cases where the an application

-  is known to have custom interfaces which provide information not supplied by IAccessible2

-  or MSAA, then those custom interfaces can be used.)  The AT can then, by default, support

-  unknown IAccessible2/MSAA applications, without the application developers having to request

-  AT vendors for support on an individual application by application basis.

-

-  When you have a reference to an IAccessible and require a reference to an IAccessible2 use 

-  QueryService as follows:

-  @code

-  // pAcc is a reference to the accessible object's IAccessible interface. 

-  IServiceProvider *pService = NULL; 

-  hr = pAcc->QueryInterface(IID_IServiceProvider, (void **)&pService); 

-  if(SUCCEEDED(hr)) { 

-    IAccessible2 *pIA2 = NULL; 

-    hr = pService->QueryService(IID_IAccessible, IID_IAccessible2, (void**)&pIA2); 

-    if (SUCCEEDED(hr) && pIA2) { 

-      // The control supports IAccessible2. 

-      // pIA2 is the reference to the accessible object's IAccessible2 interface.

-    } 

-  } 

-  @endcode

-

- @section _changingInterfaces Changing between Accessible Interfaces

-  Note that developers must always implement MSAA's IAccessible and, if needed, some 

-  of the interfaces in the set of IAccessible2 interfaces.  Although the IAccessible2 

-  IDL is currently coded such that IAccessible2 is a subclass of MSAA's IAccessible, 

-  none of MSAA's IAccessible methods are overridden or extended.  In order to allow 

-  future removal of the inheritance, Assistive Technologies (ATs) should not rely on 

-  that inheritance. 

-

-  QueryService must be used to switch from a reference to an MSAA IAccessible interface 

-  to another interface.  This has been 

-  <a href="http://www.accessinteropalliance.org/docs/Introducing_IAccessibleEx.doc">

-  documented by Microsoft</a> and the pertinent facts have been extracted below: 

-

-  @par 

-   Why use QueryService instead of just using QueryInterface to get IAccessibleEx 

-   directly? The reason is that since MSAA 2.0, clients don't talk to a server's 

-   IAccessible interface directly; instead they talk to an intermediate MSAA-provided 

-   wrapper that calls through to the original IAccessible. This wrapper provides services 

-   such as implementing IDispatch, supplying information from MSAA 2.0's Dynamic Annotation 

-   service, and scaling locations when running on Windows Vista with DPI scaling enabled. 

-   QueryService is the supported way to expose additional interfaces from an existing 

-   IAccessible and was originally used by MSHTML to expose IHTMLElement objects corresponding 

-   to IAccessibles. QueryService is often more convenient for servers to implement than 

-   QueryInterface because it does not have the same requirements for preserving object 

-   identity or symmetry/transitivity as QueryInterface, so QueryService allows servers to 

-   easily implement the interface on the same object or a separate object. The latter is 

-   often hard to do with QueryInterface unless the original object supports aggregation. 

-

-  Two related references in MSDN&reg; are: 

-  @li <a href="http://msdn.microsoft.com/en-us/library/ms696078(VS.85).aspx">

-  "Using QueryService to expose a native object model interface for an IAccessible object"</a>

-  @li <a href="http://msdn.microsoft.com/en-us/library/ms528415.aspx#acc_obj"> 

-  "Accessing the Internet Explorer Object Associated with an Accessible Object"</a>

-

-  Based on this information from Microsoft, QueryService must be used to switch back and forth 

-  between a reference to an MSAA IAccessible interface and any of the IAccessible2 interfaces. 

-

-  Regarding switching between any of the IAccessible2 interfaces, applications implementing

-  IAccessible2 should implement the IAccessible2 interfaces on a single object since ATs

-  will be using QueryInterface to switch between the IAccessilbe2 interfaces.  Implementing

-  the IAccessible2 interfaces on separate objects would require the use of QueryService.

-  There is one exception, IAccessibleApplication can be implemented on a separate object so

-  its common code doesn't have to be included in each accessible object.  ATs should use

-  QueryService to access IAccessibleApplication.

-

- @section _applicationInfo Access to Information about the Application

-  Servers implementing IAccessible2 should provide access to the IAccessibleApplication 

-  interface via QueryService from any object so that ATs can easily determine specific 

-  information about the application such as its name or version.

-

- @section _childIDs Child IDs

-  The IAccessible2 interfaces do not support child IDs, i.e. simple child elements.

-  Full accessible objects must be created for each object that supports IAccessible2.

-  Therefore MSAA's get_accChild should never return a child ID (other than CHILDID_SELF)

-  for an object that implements any of the IAccessible2 interfaces.

-

-  Microsoft's UI Automation specification has the same limitation and this was resolved

-  in the UI Automation Express specification by adding IAccessibleEx::GetObjectForChild

-  and IAccessibleEx::GetIAccessiblePair.  These methods allow mapping back and forth 

-  between an IAccessibleEx and an {IAccessible, Child ID} pair.  A future version of 

-  IAccessible2 may include similar methods to map back and forth between an IAccessible2

-  and an {IAccessible, Child ID} pair.

-

- @section _variants VARIANTs

-  Some methods return a VARIANT.  Implementers need to make sure that the return type is 

-  specified, i.e. VT_I4, VT_IDISPATCH, etc.  The methods that return VARIANTs are 

-  IAccessibleHyperlink::anchor, IAccessibleHyperlink::anchorTarget, IAccessibleValue::currentValue,

-  IAccessibleValue::maximumValue, IAccessibleValue::minimumValue.

-

- @section _iaaction-iahyperlink IAccessibleHyperlink as subclass of IAccessibleAction

-  In this version of the IDL, IAccessibleHyperlink is a subclass of IAccessibleAction.  

-  However, there is no practical need for that inheritance and in some cases, such as

-  an image map of smart tags, it doesn't make sense because such an image map doesn't 

-  have actionable objects; it's the secondary smart tags that are actionable.  As a 

-  result, implementations should not rely on the inheritance as it may be removed in 

-  a later version of the IDL.

-

- @section _trademark Trademark Attribution

-  The names of actual companies and products mentioned herein may be the trademarks of

-  their respective owners.  In particular, Active Accessibility, Microsoft, MSDN, and Win32

-  are trademarks of the Microsoft group of companies in the U.S.A. and/or other countries.

-

-**/

-

-import "objidl.idl";

-import "oaidl.idl";

-import "oleacc.idl";

-

-

-

-

-/** A structure defining the locale of an accessible object.

- 

-IAccessible2::locale returns this struct.

-*/

-typedef struct IA2Locale {

-  BSTR language; ///< ISO 639-1 Alpha-2 two character language code

-  BSTR country;  ///< ISO 3166-1 Alpha-2 two character country code

-  BSTR variant;  ///< Application specific variant of the locale

-} IA2Locale;

-

-/** This interface must always be provided for objects that support some

- portion of the collection of the %IAccessible2 interfaces.

-

- Please refer to @ref _changingInterfaces "Changing between Accessible Interfaces"

- for special considerations related to use of the MSAA IAccessible interface and 

- the set of %IAccessible2 interfaces.

-

- */

-[object, uuid(E89F726E-C4F4-4c19-BB19-B647D7FA8478)]

-interface IAccessible2 : IAccessible

-{

-

-  /** @brief Returns the number of accessible relations for this object.

-   @param [out] nRelations

-   @retval S_OK

-  */

-  [propget] HRESULT nRelations

-    (

-     [out, retval] long *nRelations

-    );

-

-  /** @brief Returns one accessible relation for this object.

-   @param [in] relationIndex

-     0 based

-   @param [out] relation

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] value is NULL

-  */

-  [propget] HRESULT relation

-    (

-     [in] long relationIndex,

-     [out, retval] IAccessibleRelation **relation

-    );

-

-  /** @brief Returns multiple accessible relations for this object.

-   @param [in] maxRelations

-     maximum size of the array allocated by the client

-   @param [out] relations

-    The array of accessible relation objects.  Note that this array is to be

-	allocated by the client and freed when no longer needed.  Refer to @ref 

-	_arrayConsideration "Special Consideration when using Arrays" for more details.

-   @param [out] nRelations 

-    actual number of relations in the returned array (not more than maxRelations)

-   @retval S_OK

-   @retval S_FALSE if there are no relations, nRelations is set to 0

-  */

-  [propget] HRESULT relations

-    (

-     [in] long maxRelations, 

-     [out, size_is(maxRelations), length_is(*nRelations)]

-       IAccessibleRelation **relations, 

-     [out, retval] long *nRelations 

-    );

-

-  /** @brief Returns the role of an %IAccessible2 object.

-   @param [out] role

-    The role of an %IAccessible2 object.

-   @retval S_OK

-   @note 

-   @li For convenience MSAA roles are also passed through this method so the

-    AT doesn't have to also fetch roles through MSAA's get_accRole.

-   @li %IAccessible2 roles should not be passed through MSAA's get_accRole.

-   @li For compatibility with non IAccessible2 enabled ATs, IAccessible2 

-    applications should also add support to get_accRole to return the closest 

-	MSAA role or ROLE_SYSTEM_CLIENT (the MSAA defined default role) if there 

-	is not a good match.  

-   @li This method is missing a [propget] prefix in the IDL.  The result is the

-    method is named role in generated C++ code instead of get_role.

-  */

-  HRESULT role

-    (

-     [out, retval] long *role

-    );

-

-  /** @brief Makes an object visible on the screen.

-   @param [in] scrollType

-    Defines where the object should be placed on the screen.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT scrollTo

-    (

-     [in] enum IA2ScrollType scrollType 

-    );

-

-  /** @brief Moves the top left of an object to a specified location.

-

-   @param [in] coordinateType

-    Specifies whether the coordinates are relative to the screen or the parent object.

-   @param [in] x

-    Defines the x coordinate.

-   @param [in] y

-    Defines the y coordinate.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT scrollToPoint

-    (

-     [in] enum IA2CoordinateType coordinateType,

-	 [in] long x,

-	 [in] long y 

-    );

-

-  /** @brief Returns grouping information.

-   

-   Used for tree items, list items, tab panel labels, radio buttons, etc.

-   Also used for collections of non-text objects.

-

-   @param [out] groupLevel

-    1 based, 0 indicates that this value is not applicable

-   @param [out] similarItemsInGroup

-    1 based, 0 indicates that this value is not applicable

-   @param [out] positionInGroup

-    1 based, 0 indicates that this value is not applicable. This is an index

-	into the objects in the current group, not an index into all the objects

-	at the same group level.

-   @retval S_OK if at least one value is valid

-   @retval S_FALSE if no values are valid

-   @note This method is meant to describe the nature of an object's containment

-    structure.  This is normally not implemented on a combo box to describe the nature

-    of its contents.  Normally an AT will get that information from its child list 

-	object.  However, in some cases when combo boxes are not able to be structured

-	such that the list is a child of the combo box, this method is implemented

-	on the combo box itself. ATs can use this interface if a child list is not found.

-	*/

-  [propget] HRESULT groupPosition

-    (

-     [out] long *groupLevel,

-     [out] long *similarItemsInGroup,

-     [out, retval] long *positionInGroup 

-    );

-

-  /** @brief Returns the bit strip containing any IAccessible2 states.

-  

-   The IAccessible2 states are in addition to the MSAA states and are defined in

-   the IA2States enum.

-

-   @param [out] states

-   @retval S_OK

-  */

-  [propget] HRESULT states

-    (

-	 [out, retval] AccessibleStates *states

-    );

-

-  /** @brief Returns the extended role.

-   

-   An extended role is a role which is dynamically generated by the application.

-   It is not predefined by the %IAccessible2 specification.

-   

-   @param [out] extendedRole

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL

-  */

-  [propget] HRESULT extendedRole

-    (

-	 [out, retval] BSTR *extendedRole

-    );

-

-  /** @brief Returns the localized extended role.

-   @param [out] localizedExtendedRole

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL

-  */

-  [propget] HRESULT localizedExtendedRole

-    (

-	 [out, retval] BSTR *localizedExtendedRole

-    );

-

-  /** @brief Returns the number of extended states.

-   @param [out] nExtendedStates

-   @retval S_OK

-  */

-  [propget] HRESULT nExtendedStates

-    (

-     [out, retval] long *nExtendedStates

-    );

-

-  /** @brief Returns the extended states (array of strings).

-

-   An extended state is a state which is dynamically generated by the application.

-   It is not predefined by the %IAccessible2 specification.

-

-   @param [in] maxExtendedStates

-    This parameter is ignored. Refer to @ref _arrayConsideration 

-	"Special Consideration when using Arrays" for more details.

-   @param [out] extendedStates

-    This array is allocated by the server.  Free it with CoTaskMemFree.

-   @param [out] nExtendedStates

-    The number of extended states returned; the size of the returned array.

-   @retval S_OK

-   @retval S_FALSE if there are no states, [out] values are NULL and 0 respectively

-  */

-  [propget] HRESULT extendedStates

-    (

-     [in] long maxExtendedStates,

-     [out, size_is(,maxExtendedStates), length_is(,*nExtendedStates)] BSTR **extendedStates,

-     [out, retval] long *nExtendedStates

-    );

-

-  /** @brief Returns the localized extended states (array of strings).

-   @param [in] maxLocalizedExtendedStates

-    This parameter is ignored. Refer to @ref _arrayConsideration 

-	"Special Consideration when using Arrays" for more details.

-   @param [out] localizedExtendedStates

-    This array is allocated by the server.  Free it with CoTaskMemFree. 

-   @param [out] nLocalizedExtendedStates

-    The number of localized extended states returned; the size of the returned array.

-   @retval S_OK

-   @retval S_FALSE if there are no states, [out] values are NULL and 0 respectively

-  */

-  [propget] HRESULT localizedExtendedStates

-    (

-     [in] long maxLocalizedExtendedStates,

-     [out, size_is(,maxLocalizedExtendedStates), length_is(,*nLocalizedExtendedStates)] BSTR **localizedExtendedStates,

-     [out, retval] long *nLocalizedExtendedStates

-    );

-

-  /** @brief Returns the unique ID.

-   

-   The uniqueID is an identifier for this object, is unique within the

-   current window, and remains the same for the lifetime of the accessible

-   object. 

-   

-   The uniqueID is not related to:

-   - the MSAA objectID which is used by the server to disambiguate between

-   IAccessibles per HWND or

-   - the MSAA childID which is used to disambiguate between children being

-   managed by an IAccessible.

-

-   This value is provided so the AT can have access to a unique runtime persistent 

-   identifier even when not handling an event for the object.

-   

-   An example of when this value is useful is if the AT wants to build a cache. 

-   The AT could cache the uniqueIDs in addition to other data being cached. 

-   When an event is fired the AT could map the uniqueID to its internal model.

-   Thus, if there's a REORDER/SHOW/HIDE event the AT knows which part of the 

-   internal structure has been invalidated and can refetch just that part.

-

-   This value can also be used by an AT to determine when the current control

-   has changed. If the role is the same for two controls that are adjacent in 

-   the tab order, this can be used to detect the new control.

-

-   Another use of this value by an AT is to identify when a grouping object has 

-   changed, e.g. when moving from a radio button in one group to a radio button in a 

-   different group.

-

-   One means of implementing this would be to create a factory with a 32 bit number 

-   generator and a reuse pool.  The number generator would emit numbers starting 

-   at 1.  Each time an object's life cycle ended, its number would be saved into a 

-   resuse pool.  The number generator would be used whenever the reuse pool was empty.

-

-   @param [out] uniqueID

-   @retval S_OK

-  */

-  [propget] HRESULT uniqueID

-    (

-     [out, retval] long *uniqueID

-    );

-

-  /** @brief Returns the window handle for the parent window which contains this object.

-

-   This is the same window handle which will be passed for any events that occur on the 

-   object, but is cached in the accessible object for use when it would be helpful to 

-   access the window handle in cases where an event isn't fired on this object.

-

-   A use case is when a screen reader is grabbing an entire web page on a page load. 

-   Without the availability of windowHandle, the AT would have to get the window handle

-   by using WindowFromAccessibleObject on each IAccessible, which is slow because it's 

-   implemented by oleacc.dll as a loop which crawls up the ancestor chain and looks for 

-   a ROLE_WINDOW object, mapping that back to a window handle.

-   

-   @param [out] windowHandle

-   @retval S_OK

-  */

-  [propget] HRESULT windowHandle

-    (

-     [out, retval] HWND *windowHandle

-    );

- 

-  /** @brief Returns the index of this object in its parent object.

-   @param [out] indexInParent

-     0 based; -1 indicates there is no parent; the upper bound is the value 

-	 returned by the parent's IAccessible::get_accChildCount.

-   @retval S_OK

-   @retval S_FALSE if no parent, [out] value is -1

-  */

-  [propget] HRESULT indexInParent

-    (

-     [out, retval] long *indexInParent

-    );

-

-  /** @brief Returns the IA2Locale of the accessible object. 

-   @param [out] locale

-   @retval S_OK

-  */

-  [propget] HRESULT locale

-    (

-     [out, retval] IA2Locale *locale

-    );

-

-  /** @brief Returns the attributes specific to this %IAccessible2 object, such as a cell's formula.

-   @param [out] attributes

-   @retval S_OK

-   @retval S_FALSE returned if there is nothing to return, [out] value is NULL

-  */

-  [propget] HRESULT attributes

-    (

-     [out, retval] BSTR *attributes

-    );

-

-}

-

-/*************************************************************************

- *

- *  File Name (AccessibleComponent.idl)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2008

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-import "objidl.idl";

-import "oaidl.idl";

-import "oleacc.idl";

-

-/** A value specifying a color in ARGB format, where each 8 bit color component

-specifies alpha, red, green, and blue respectively.  The alpha value is optional.

-*/

-typedef long IA2Color;

-

-/** @brief This interface is implemented by any object that can be rendered 

- on the screen.

-

- This interface provides the standard mechanism for an assistive technology

-  to retrieve information concerning the graphical representation of an object. 

-  Coordinates used by the functions of this interface are specified in

-  different coordinate systems.  Their scale is the same and is equal to

-  that of the screen coordinate system.  In other words all coordinates

-  are measured in pixels.  They differ in their respective origin:

-  <ul>

-   <li>The screen coordinate system has its origin in the upper left

-    corner of the current screen.</li>

-   <li>The origin of the parent coordinate system is the upper left corner

-    of the parent's bounding box.  With no parent the screen coordinate

-    system is used instead.</li>

-  </ul>

-*/

-[object, uuid(1546D4B0-4C98-4bda-89AE-9A64748BDDE4)]

-interface IAccessibleComponent : IUnknown

-{

-

-  /** @brief Returns the location of the upper left corner of the object's

-    bounding box relative to the immediate parent object.

-	

-	The coordinates of the bounding box are given relative to the parent's 

-	coordinate system. The coordinates of the returned position are relative 

-	to this object's parent or relative to the screen on which this object

-    is rendered if it has no parent. If the object is not on any screen

-    the returned position is (0,0).

-   

-   @param [out] x

-   @param [out] y

-   @retval S_OK

-  */

-  [propget] HRESULT locationInParent

-    (

-	 [out] long *x,

-     [out, retval] long *y

-    );

-

-  /** @brief Returns the foreground color of this object.

-   @param [out] foreground

-    The returned color is the foreground color of this object or, if

-    that is not supported, the default foreground color.

-   @retval S_OK

-  */ 

-  [propget] HRESULT foreground

-    (

-     [out, retval] IA2Color *foreground

-    );

-

-   /** @brief Returns the background color of this object.

-    @param [out] background

-     The returned color is the background color of this object or, if

-     that is not supported, the default background color.

-    @retval S_OK

-   */ 

-  [propget] HRESULT background

-    (

-     [out, retval] IA2Color *background

-    );

-}

-/*************************************************************************

- *

- *  File Name (AccessibleValue)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2008

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-import "objidl.idl";

-import "oaidl.idl";

-import "oleacc.idl";

-

-/** @brief This interface gives access to a single numerical value.

-

- The %IAccessibleValue interface represents a single numerical value and should 

-  be implemented by any class that supports numerical value like progress bars 

-  and spin boxes.  This interface lets you access the value and its upper and 

-  lower bounds.

-*/

-[object, uuid(35855B5B-C566-4fd0-A7B1-E65465600394)]

-interface IAccessibleValue : IUnknown

-{

-

-  /** @brief Returns the value of this object as a number.

-        

-   The exact return type is implementation dependent.  Typical types are long and 

-    double.

-   @param [out] currentValue

-    Returns the current value represented by this object.  See the section about 

-	@ref _variants "VARIANTs" for additional information.

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL

-  */

-  [propget] HRESULT currentValue

-    (

-     [out, retval] VARIANT *currentValue

-    );

-

-  /** @brief Sets the value of this object to the given number.

-        

-   The argument is clipped to the valid interval whose upper and lower 

-    bounds are returned by the methods IAccessibleValue::maximumValue and 

-	IAccessibleValue::minimumValue, i.e. if it is 	lower than the minimum 

-	value the new value will be the minimum and if it is greater than the 

-	maximum then the new value will be the maximum.

-

-   @param [out] value

-    The new value represented by this object.  The set of admissible types for 

-    this argument is implementation dependent.

-   @retval S_OK

-  */

-  HRESULT setCurrentValue

-    (

-     [in] VARIANT value

-    );

-

-  /** @brief Returns the maximal value that can be represented by this object.

-        

-   The type of the returned value is implementation dependent.  It does not have 

-    to be the same type as that returned by method IAccessibleValue::currentValue.

-

-   @param [out] maximumValue

-    Returns the maximal value in an implementation dependent type. If this object 

-    has no upper bound then an empty object is returned.  See the section about 

-	@ref _variants "VARIANTs" for additional information.

-   @retval S_OK

-  */

-  [propget] HRESULT maximumValue

-    (

-     [out, retval] VARIANT *maximumValue

-    );

-

-  /** @brief Returns the minimal value that can be represented by this object.

-        

-   The type of the returned value is implementation dependent.  It does not have 

-    to be the same type as that returned by method IAccessibleValue::currentValue.

-   

-   @param [out] minimumValue

-    Returns the minimal value in an implementation dependent type. If this object 

-    has no lower bound then an empty object is returned.  See the section about 

-	@ref _variants "VARIANTs" for additional information.

-   @retval S_OK

-  */

-  [propget] HRESULT minimumValue

-    (

-     [out, retval] VARIANT *minimumValue

-    );

-

-};

-/*************************************************************************

- *

- *  File Name (AccessibleText.idl)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2008

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-import "objidl.idl";

-import "oaidl.idl";

-import "oleacc.idl";

-

-

-/** A structure containing a substring and the start and end offsets in the enclosing string.

- 

- IAccessibleText::newText and IAccessibleText::oldText return this struct.

-*/

-typedef struct IA2TextSegment {

-  BSTR text;	///< A copy of a segment of text taken from an enclosing paragraph.

-  long start;	///< Index of the first character of the segment in the enclosing text.  

-  long end;		///< Index of the character following the last character of the segment in the enclosing text. 

-} IA2TextSegment;

-

-/** This enum defines values which specify a text boundary type.

-

- IA2_TEXT_BOUNDARY_SENTENCE is optional.  When a method doesn't implement this 

- method it must return S_FALSE.  Typically this feature would not be implemented

- by an application.  However, if the application developer was not satisfied with

- how screen readers have handled the reading of sentences this boundary type

- could be implemented and screen readers could use the application's version of a 

- sentence rather than the screen reader's.

-

- The rest of the boundary types must be supported.

-

- This enum is used in IAccessibleText::textBeforeOffset, IAccessibleText::textAtOffset,

- and IAccessibleText::textAfterOffset.

-*/

-

-enum IA2TextBoundaryType {

-  IA2_TEXT_BOUNDARY_CHAR,		/**< Typically, a single character is returned.  In some cases more than

-								 one character is returned, for example, when a document contains field

-								 data such as a field containing a date, time, or footnote reference.

-								 In this case the caret can move over several characters in one movement

-								 of the caret.  Note that after the caret moves, the caret offset changes

-								 by the number of characters in the field, e.g. by 8 characters in the 

-								 following date: 03/26/07. */

-  IA2_TEXT_BOUNDARY_WORD,		/**< The range provided matches the range observed when the application

-								 processes the Ctrl + left arrow and Ctrl + right arrow key sequences.

-								 Typically this is from the start of one word to the start of the next, but

-								 various applications are inconsistent in the handling of the end of a line. */

-  IA2_TEXT_BOUNDARY_SENTENCE,	///< Range is from start of one sentence to the start of another sentence.

-  IA2_TEXT_BOUNDARY_PARAGRAPH,	///< Range is from start of one paragraph to the start of another paragraph.

-  IA2_TEXT_BOUNDARY_LINE,		/**< Range is from start of one line to the start of another line. This

-                                 often means that an end-of-line character will appear at the end of the

-								 range. However in the case of some applications an end-of-line character

-								 indicates the end of a paragraph and the lines composing the paragraph,

-								 other than the last line, do not contain an end of line character. */

-  IA2_TEXT_BOUNDARY_ALL			///< Using this value will cause all text to be returned.

-};

-

-/** @brief This interface gives read-only access to text.

-

- The %IAccessibleText interface should be implemented by all components 

-  that present textual information on the display like  buttons, 

-  text entry fields, or text portions of the document window.  The interface 

-  provides access to the text's content, attributes, and spatial location.  

-  However, text can not be modified with this interface.  That is the task 

-  of the IAccessibleEditableText interface.

-        

- The text length, i.e. the number of characters in the text, is

-  returned by IAccessibleText::nCharacters. All methods that operate 

-  on particular characters (e.g. IAccessibleText::textAtOffset) use character 

-  indices from 0 to length-1. All methods that operate on character positions 

-  (e.g. IAccessibleText::text) use indices from 0 to length.

-

- Please note that accessible text does not necessarily support selection.  

-  In this case it should behave as if there where no selection.  An empty 

-  selection is used for example to express the current cursor position.

-

- Refer to @ref _specialOffsets 

-  "Special Offsets for use in the IAccessibleText and IAccessibleEditableText Methods" 

-  for information about special offsets that can be used in %IAccessibleText methods.

-

- E_FAIL is returned in the following cases

- @li endOffset < startOffset

- @li endoffset > length

-*/

-[object, uuid(24FD2FFB-3AAD-4a08-8335-A3AD89C0FB4B)]

-interface IAccessibleText : IUnknown

-{

-

-  /** @brief Adds a text selection

-   @param [in] startOffset

-    Starting offset ( 0 based).

-   @param [in] endOffset

-    Offset of first character after new selection (0 based).

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT addSelection

-    (

-     [in] long startOffset,

-     [in] long endOffset

-    );

-

-  /** @brief Returns text attributes.

-   @param [in] offset

-    Text offset (0 based)

-   @param [out] startOffset    

-    The starting offset of the character range over which all text attributes match 

-	those of offset. (0 based)

-   @param [out] endOffset    

-    The offset of the first character past the character range over which all text 

-	attributes match those of offset. (0 based)

-   @param [out] textAttributes  

-    A string of attributes describing the text.  The attributes are described in the

-    <a href="http://www.linuxfoundation.org/en/Accessibility/IAccessible2/TextAttributes">

-    text attributes specification</a> on the %IAccessible2 web site.

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] values are 0s and NULL respectively 

-   @retval E_INVALIDARG if bad [in] passed, [out] values are 0s and NULL respectively 

-        

-  */

-  [propget] HRESULT attributes

-    (

-     [in] long offset,	

-     [out] long *startOffset,

-     [out] long *endOffset,	

-     [out, retval] BSTR *textAttributes

-    );

-

-  /** @brief Returns the position of the caret.

-

-   Returns the 0-based offset of the caret within the text.  If the text is 

-   implemented as a tree of text objects with embed characters in higher levels

-   representing substrings of child text objects and the caret is in one of the 

-   child text objects, then the offset in the higher level text object would be

-   at the embed character representing child text object that contains the caret.

-

-   For example, if the string "one two three" is implemented as a two text objects,

-   with a top level text object containing an embed character "one ? three" and a

-   child text object containing "two" and if the caret is in the descendant object

-   just before the 'o' in "two", then:

-   <ul>

-   <li>the caretOffset for the "one ? three" object would be 4, matching the embed character</li>

-   <li>the caretOffset for "two" would be 2, matching the "o"</li>

-   </ul>

-   The caret position/offset is that of the character logically following it, e.g.

-   to the right of it in a left to right language.

-   @param [out] offset

-    The returned offset is relative to the text represented by this object.

-   @retval S_OK

-   @retval S_FALSE if the caret is not currently active on this object, i.e. the

-    caret is located on some other object.  The returned offset value will be -1.

-   @note S_FALSE (and an offset of -1) will not be returned if the caret is somewhere

-   in the text object or one of its descendants. 

-  */

-  [propget] HRESULT caretOffset

-    (

-     [out, retval] long *offset

-    );

-

-

-  /** @brief Returns the bounding box of the specified position.

-        

-   The virtual character after the last character of the represented

-    text, i.e. the one at position length is a special case. It represents the 

-    current input position and will therefore typically be queried by AT more 

-    often than other positions.  Because it does not represent an existing character 

-    its bounding box is defined in relation to preceding characters.  It should be 

-    roughly equivalent to the bounding box of some character when inserted at the 

-    end of the text.  Its height typically being the maximal height of all the

-    characters in the text or the height of the preceding character, its width being 

-    at least one pixel so that the bounding box is not degenerate.

-

-   Note that the index 'length' is not always valid.  Whether it is or not is 

-    implementation dependent.  It typically is when text is editable or otherwise 

-    when on the screen the caret can be placed behind the text.  You can be sure 

-    that the index is valid after you have received a ::IA2_EVENT_TEXT_CARET_MOVED

-    event for this index.

-   @param [in] offset

-    Index of the character for which to return its bounding box. The valid range 

-    is 0..length.

-   @param [in] coordType

-    Specifies if the coordinates are relative to the screen or to the parent window.

-   @param [out] x

-    X coordinate of the top left corner of the bounding box of the referenced character. 

-   @param [out] y

-    Y coordinate of the top left corner of the bounding box of the referenced character. 

-   @param [out] width

-    Width of the bounding box of the referenced character. 

-   @param [out] height

-    Height of the bounding box of the referenced character. 

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] values are 0s 

-  */

-  [propget] HRESULT characterExtents

-    (

-     [in] long offset,

-     [in] enum IA2CoordinateType coordType,

-     [out] long *x,

-     [out] long *y,

-     [out] long *width,

-     [out, retval] long *height

-    );

-

-

-  /** @brief Returns the number of active non-contiguous selections

-   @param [out] nSelections

-   @retval S_OK

-  */

-  [propget] HRESULT nSelections

-    (

-     [out, retval] long *nSelections

-    );

-

-  /** @brief Returns the text position for the specified screen position.

-    

-   Given a point return the zero-based index of the character under that

-   point.  The same functionality could be achieved by using the bounding

-   boxes for each character as returned by IAccessibleText::characterExtents.

-   The method IAccessibleText::offsetAtPoint, however, can be implemented 

-   more efficiently.

-            

-   @param [in] x

-    The position's x value for which to look up the index of the character that

-	is rendered on to the display at that point.

-   @param [in] y

-    The position's y value for which to look up the index of the character that

-	is rendered on to the display at that point.            

-   @param [in] coordType

-    Screen coordinates or window coordinates.

-   @param [out] offset

-    Index of the character under the given point or -1 if the point

-    is invalid or there is no character under the point.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] value is 0 

-    */

-  [propget] HRESULT offsetAtPoint

-    (

-     [in] long x,

-     [in] long y,

-     [in] enum IA2CoordinateType coordType,

-     [out, retval] long *offset

-    );

-

-  /** @brief Returns the character offsets of Nth active text selection

-   @param [in] selectionIndex

-    Index of selection (0 based).

-   @param [out] startOffset

-    0 based offset of first selected character

-   @param [out] endOffset

-    0 based offset of one past the last selected character.

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] values are 0s 

-   @retval E_INVALIDARG if bad [in] passed, [out] values are 0s 

-  */

-  [propget] HRESULT selection

-    (

-     [in] long selectionIndex,

-     [out] long *startOffset,

-     [out, retval] long *endOffset

-    );

-

-  /** @brief Returns the substring between the two given indices.

-

-   The substring starts with the character at startOffset (inclusive) and up to 

-    the character at endOffset (exclusive), if startOffset is less or equal 

-    endOffste.  If endOffset is lower than startOffset, the result is the same 

-    as a call with the two arguments being exchanged.

-

-   The whole text can be requested by passing the indices zero and 

-    IAccessibleText::nCharacters. If both indices have the same value, an empty 

-	string is returned.

-   @param [in] startOffset

-    Index of the first character to include in the returned string. The valid range 

-    is 0..length.

-   @param [in] endOffset

-    Index of the last character to exclude in the returned string. The valid range 

-    is 0..length.

-   @param [out] text

-    Returns the substring starting with the character at startOffset (inclusive) 

-    and up to the character at endOffset (exclusive), if startOffset is less than 

-    or equal to endOffset.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] value is NULL

-   @note The returned string may be longer than endOffset-startOffset bytes if text 

-   contains multi-byte characters.

-  */

-  [propget] HRESULT text

-    (

-     [in] long startOffset,

-     [in] long endOffset,

-     [out, retval] BSTR *text

-    );

-

-  /** @brief Returns a text portion before the given position.

-    

-   Returns the substring of the specified text type that is located before the 

-    given character and does not include it. The result of this method should be 

-    same as a result for IAccessibleText::textAtOffset with a suitably decreased 

-    index value.

-

-   For example, if text type is ::IA2_TEXT_BOUNDARY_WORD, then the complete 

-    word that is closest to and located before offset is returned.

-

-   If the index is valid, but no suitable word (or other boundary type) is found, a

-    NULL pointer is returned.

-

-   @param [in] offset

-    Index of the character for which to return the text part before it.  The index 

-    character will not be part of the returned string. The valid range is 0..length.

-   @param [in] boundaryType

-    The type of the text portion to return.  See ::IA2TextBoundaryType for the 

-	complete list.

-   @param [out] startOffset

-    0 based offset of first character.

-   @param [out] endOffset

-    0 based offset of one past the last character.

-   @param [out] text

-    Returns the requested text portion.  This portion may be empty or invalid when 

-    no appropriate text portion is found or text type is invalid.

-   @retval S_OK

-   @retval S_FALSE if the requested boundary type is not implemented, such as 

-    ::IA2_TEXT_BOUNDARY_SENTENCE, or if there is nothing to return; 

-	[out] values are 0s and NULL respectively 

-   @retval E_INVALIDARG if bad [in] passed, [out] values are 0s and NULL respectively 

-  */

-  [propget] HRESULT textBeforeOffset

-    (

-     [in] long offset,

-     [in] enum IA2TextBoundaryType boundaryType,

-     [out] long *startOffset,

-     [out] long *endOffset,

-     [out, retval] BSTR *text

-    );

-

-  /** @brief Returns a text portion after the given position.

-    

-   Returns the substring of the specified text type that is located after the 

-    given character and does not include it. The result of this method should be 

-    same as a result for IAccessibleText::textAtOffset with a suitably increased 

-    index value.

-

-   For example, if text type is ::IA2_TEXT_BOUNDARY_WORD, then the complete 

-    word that is closest to and located after offset is returned.

-

-   If the index is valid, but no suitable word (or other text type) is found, a 

-    NULL pointer is returned.

-

-   @param [in] offset

-    Index of the character for which to return the text part before it.  The index 

-    character will not be part of the returned string. The valid range is 0..length.

-   @param [in] boundaryType

-    The type of the text portion to return.  See ::IA2TextBoundaryType for the complete 

-    list.

-   @param [out] startOffset

-    0 based offset of first character.

-   @param [out] endOffset

-    0 based offset of one past the last character.

-   @param [out] text

-    Returns the requested text portion.  This portion may be empty or invalid when 

-    no appropriate text portion is found or text type is invalid.

-   @retval S_OK

-   @retval S_FALSE if the requested boundary type is not implemented, such as 

-    ::IA2_TEXT_BOUNDARY_SENTENCE, or if there is nothing to return; 

-	[out] values are 0s and NULL respectively 

-   @retval E_INVALIDARG if bad [in] passed, [out] values are 0s and NULL respectively 

-  */

-  [propget] HRESULT textAfterOffset

-    (

-     [in] long offset,

-     [in] enum IA2TextBoundaryType boundaryType,

-     [out] long *startOffset,

-     [out] long *endOffset,

-     [out, retval] BSTR *text

-    );

-

-  /** @brief Returns a text portion that spans the given position.

-    

-   Returns the substring of the specified text type at the specified offset.

-

-   If the index is valid, but no suitable word (or other text type) is found, a 

-    NULL pointer is returned.

-

-   @param [in] offset

-    Index of the character for which to return the text part before it.  The index 

-    character will not be part of the returned string. The valid range is 0..length.

-   @param [in] boundaryType

-    The type of the text portion to return.  See ::IA2TextBoundaryType for the complete 

-    list.

-   @param [out] startOffset

-    0 based offset of first character.

-   @param [out] endOffset

-    0 based offset of one past the last character.

-   @param [out] text

-    Returns the requested text portion.  This portion may be empty or invalid when 

-    no appropriate text portion is found or text type is invalid.

-   @retval S_OK

-   @retval S_FALSE if the requested boundary type is not implemented, such as 

-    ::IA2_TEXT_BOUNDARY_SENTENCE, or if there is nothing to return; 

-	[out] values are 0s and NULL respectively 

-   @retval E_INVALIDARG if bad [in] passed, [out] values are 0s and NULL respectively 

-  */

-  [propget] HRESULT textAtOffset

-    (

-     [in] long offset,

-     [in] enum IA2TextBoundaryType boundaryType,

-     [out] long *startOffset,

-     [out] long *endOffset,

-     [out, retval] BSTR *text

-    );

-

-  /** @brief Unselects a range of text.

-   @param [in] selectionIndex

-    Index of selection to remove (0 based).

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT removeSelection

-    (

-     [in] long selectionIndex

-    );

-

-  /** @brief Sets the position of the caret.

-

-   The caret position/offset is that of the character logically following it,

-   e.g. to the right of it in a left to right language.

-

-   Setting the caret position may or may not alter the current selection.  A 

-    change of the selection is notified to the accessibility event listeners with 

-    an ::IA2_EVENT_TEXT_SELECTION_CHANGED event.

-

-   When the new caret position differs from the old one (which, of course, is the 

-    standard case) this is notified to the accessibility event listeners with an

-    ::IA2_EVENT_TEXT_CARET_MOVED event.

-   @param [in] offset

-    The new index of the caret.  This caret is actually placed to the left side of 

-    the character with that index.  An index of 0 places the caret so that the next 

-    insertion goes before the first character.  An index of IAccessibleText::nCharacters 

-	leads to insertion after the last character.

-   @retval S_OK

-   @retval E_FAIL if the caret cannot be set

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT setCaretOffset

-    (

-     [in] long offset

-    );

-

-  /** @brief Changes the bounds of an existing selection.

-   @param [in] selectionIndex

-    Index of selection to change (0 based)

-   @param [in] startOffset

-    New starting offset (0 based)

-   @param [in] endOffset

-    New ending offset (0 based) - the offset of the character just past the last character of the selection.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT setSelection

-    (

-     [in] long selectionIndex,

-     [in] long startOffset,

-     [in] long endOffset

-    );

-

-  /** @brief Returns total number of characters.

-

-   Note that this may be different than the total number of bytes required to store the 

-    text, if the text contains multi-byte characters.

-   @param [out] nCharacters

-   @retval S_OK

-  */

-  [propget] HRESULT nCharacters

-    (

-     [out, retval] long *nCharacters

-    );

-

-  /** @brief Makes a specific part of string visible on screen.

-   @param [in] startIndex

-    0 based character offset.

-   @param [in] endIndex

-    0 based character offset - the offset of the character just past the last character of the string.

-   @param [in] scrollType

-    Defines where the object should be placed on the screen.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT scrollSubstringTo

-    (

-     [in] long startIndex,

-     [in] long endIndex,

-	 [in] enum IA2ScrollType scrollType

-    );

-

-  /** @brief Moves the top left of a substring to a specified location.

-

-   @param [in] startIndex

-    0 based character offset.

-   @param [in] endIndex

-    0 based character offset - the offset of the character just past the last character of the string.

-   @param [in] coordinateType

-    Specifies whether the coordinates are relative to the screen or the parent object.

-   @param [in] x

-    Defines the x coordinate.

-   @param [in] y

-    Defines the y coordinate.

-   @retval S_OK

-   @retval S_FALSE if the object is already at the specified location.

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT scrollSubstringToPoint

-    (

-     [in] long startIndex,

-     [in] long endIndex,

-     [in] enum IA2CoordinateType coordinateType,

-	 [in] long x,

-	 [in] long y 

-    );

-

-  /** @brief Returns any inserted text.

-

-   Provided for use by the ::IA2_EVENT_TEXT_INSERTED and ::IA2_EVENT_TEXT_UPDATED 

-    event handlers.

-

-   This data is only guaranteed to be valid while the thread notifying the event 

-   continues. Once the handler has returned, the validity of the data depends on 

-   how the server manages the life cycle of its objects. Also, note that the server 

-   may have different life cycle management strategies for controls depending on 

-   whether or not a control manages its children. Lists, trees, and tables can have 

-   a large number of children and thus it's possible that the child objects for those 

-   controls would only be created as needed. Servers should document their life cycle 

-   strategy as this will be of interest to assistive technology or script engines 

-   accessing data out of process or from other threads. Servers only need to save the 

-   last inserted block of text and a scope of the entire application is adequate.

-

-   @param [out] newText

-    The text that was just inserted.

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL

-  */

-  [propget] HRESULT newText

-    (

-	 [out, retval] IA2TextSegment *newText

-	);

-

-  /** @brief Returns any removed text.

-

-   Provided for use by the IA2_EVENT_TEXT_REMOVED/UPDATED event handlers.

-   

-   This data is only guaranteed to be valid while the thread notifying the event 

-   continues. Once the handler has returned, the validity of the data depends on 

-   how the server manages the life cycle of its objects. Also, note that the server 

-   may have different life cycle management strategies for controls depending on 

-   whether or not a control manages its children. Lists, trees, and tables can have 

-   a large number of children and thus it's possible that the child objects for those 

-   controls would only be created as needed. Servers should document their life cycle 

-   strategy as this will be of interest to assistive technology or script engines 

-   accessing data out of process or from other threads. Servers only need to save the 

-   last removed block of text and a scope of the entire application is adequate.

-

-   @param [out] oldText

-    The text that was just removed.

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL

-  */

-  [propget] HRESULT oldText

-    (

-	 [out, retval] IA2TextSegment *oldText

-	);

-

-}

-/*************************************************************************

- *

- *  File Name (AccessibleEditableText.idl)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2008

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-import "objidl.idl";

-import "oaidl.idl";

-import "oleacc.idl";

-

-

-/** @brief This interface provides clipboard capability to text objects.

-

- This interface is typically used in conjunction with the IAccessibleText 

-  interface and complements that interface with the additional capability of

-  clipboard operations.  Note that even a read only text object can support

-  the copy capability so this interface is not limited to editable objects.

-

- The substrings used with this interface are specified as follows:

-  If startOffset is less than endOffset, the substring starts with the 

-  character at startOffset and ends with the character just before endOffset.

-  If endOffset is lower than startOffset,  the result is the same as a call 

-  with the two arguments exchanged. The whole text can be defined by passing 

-  the indices zero and IAccessibleText::nCharacters. If both indices have the 

-  same value, an empty string is defined. 

-

- Refer to the @ref _specialOffsets

-  "Special Offsets for use in the IAccessibleText and IAccessibleEditableText Methods" 

-  for information about a special offset constant that can be used in %IAccessibleEditableText methods.

-*/

-[object, uuid(A59AA09A-7011-4b65-939D-32B1FB5547E3)]

-interface IAccessibleEditableText : IUnknown

-{

-

-  /** @brief Copies the text range into the clipboard.

-    

-   The specified text between the two given indices is copied into the

-    system clipboard.  

-        

-   @param [in] startOffset

-    Start index of the text to moved into the clipboard.

-    The valid range is 0..length.

-   @param [in] endOffset

-    End index of the text to moved into the clipboard.

-    The valid range is 0..length.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT copyText

-    (

-     [in] long startOffset, 

-     [in] long endOffset 

-    );

-

-  /** @brief Deletes a range of text.

-    

-   The text between and including the two given indices is deleted

-    from the text represented by this object.

-

-   @param [in] startOffset

-    Start index of the text to be deleted.

-    The valid range is 0..length.

-   @param [in] endOffset

-    End index of the text to be deleted.

-    The valid range is 0..length.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT deleteText

-    (

-     [in] long startOffset, 

-     [in] long endOffset 

-    );

-  

-  /** @brief Inserts text at the specified position.

-    

-   The specified string is inserted at the given index into the text

-    represented by this object.

-

-   @param [in] offset

-    Index at which to insert the text.

-    The valid range is 0..length.

-   @param [in] text

-    Text that is inserted.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT insertText

-    (

-     [in] long offset,

-     [in] BSTR *text

-    );

-  

-  /** @brief Deletes a range of text and copies it to the clipboard.

-    

-   The text between the two given indices is deleted from the text

-    represented by this object and copied to the clipboard.

-

-   @param [in] startOffset

-    Start index of the text to be deleted.

-    The valid range is 0..length.

-   @param [in] endOffset 	

-    End index of the text to be deleted.

-    The valid range is 0..length.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT cutText

-    (

-     [in] long startOffset,

-     [in] long endOffset

-    );

-

-  /** @brief Pastes text from the clipboard.

-    

-   The text in the system clipboard is pasted into the text represented

-    by this object at the given index.  This method is similar to the 

-	IAccessibleEditableText::insertText method. If the index is not valid 

-	the system clipboard text is not inserted.

-   

-   @param [in] offset

-    Index at which to insert the text from the system clipboard into

-    the text represented by this object.

-    The valid range is 0..length.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT pasteText

-    (

-     [in] long offset

-    );

-

-  /** @brief Replaces text.

-    

-   The text between the two given indices is replaced by the specified 

-    replacement string. This method is equivalent to calling first

-    IAccessibleEditableText::deleteText with the two indices and then 

-    calling IAccessibleEditableText::insertText with the replacement text

-	at the start index.

-       

-   @param [in] startOffset

-    Start index of the text to be replaced.

-    The valid range is 0..length.

-   @param [in] endOffset

-    Start index of the text to be replaced.

-    The valid range is 0..length.

-   @param [in] text

-    The Text that replaces the text between the given indices.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT replaceText

-    (

-     [in] long startOffset,

-     [in] long endOffset,

-     [in] BSTR *text

-    );

-

-  /** @brief Replaces the attributes of a text range by the given set of attributes.

-    

-   Sets the attributes for the text between the two given indices. The old

-    attributes are replaced by the new list of attributes.

-        

-   @param [in] startOffset

-    Start index of the text whose attributes are modified.

-    The valid range is 0..length.

-   @param [in] endOffset

-    Start index of the text whose attributes are modified.

-    The valid range is 0..length.

-   @param [in] attributes

-    Set of attributes that replaces the old list of attributes of

-    the specified text portion.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT setAttributes

-    (

-     [in] long startOffset,

-     [in] long endOffset,

-     [in] BSTR *attributes

-    );

-}

-

-/*************************************************************************

- *

- *  File Name (AccessibleHyperlink.idl)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2008

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-import "objidl.idl";

-import "oaidl.idl";

-import "oleacc.idl";

-

-

-/** @brief This interface represents hyperlinks.

-

- This interface represents a hyperlink associated with a single substring 

-  of text or single non-text object.  Non-text objects can have either a 

-  single link or a collection of links such as when the non-text object is 

-  an image map.

-

- Linked objects and anchors are implementation dependent. This interface is derived

-  from IAccessibleAction.  IAccessibleAction::nActions is one greater than the 

-  maximum value for the indices used with the methods of this interface.

-        

- Furthermore, the object that implements this interface has to be connected 

-  implicitly or explicitly with an object that implements IAccessibleText.

-  IAccessibleHyperlink::startIndex and IAccessibleHyperlink::endIndex are

-  indices with respect to the text exposed by IAccessibleText.

-

- This interface provides access to a single object which can have multiple actions.

-  An example is an image map which is an image with multiple links each of which is

-  associated with a separate non-overlapping area of the image.  This interface could

-  also be applied to other kinds of objects with multiple actions such as "smart tags"

-  which are objects, typically strings, which have multiple actions such as

-  "Activate URI", "Bookmark URI", etc.

-

- An interesting use case is an image map where each area is associated with multiple

-  actions, e.g. an image map of smart tags.  In this case you would have to implement

-  two levels of accessible hyperlinks.  The first level hyperlinks would only implement

-  anchor and anchorTarget.  The anchors would all reference the image object.  The

-  anchorTargets would reference the second level accessible hyperlink objects.  None

-  of the IAccessibleAction methods would be implemented on the first level hyperlink

-  objects.  The second level hyperlink objects would implement the IAccessibleAction

-  methods.  Their anchors would also reference the image object and their anchorTargets

-  would reference URLs or the objects that would be activated.

-

- This use case demonstrates that in some cases there is no need for IAccessibleHyperlink

-  to derive from IAccessibleAction.  As a result it may be removed in a later version of

-  the IDL and it is suggested that implementations should not rely on the inheritance.

-

-*/

-[object, uuid(01C20F2B-3DD2-400f-949F-AD00BDAB1D41)]

-interface IAccessibleHyperlink : IAccessibleAction

-{

-

-  /** @brief Returns an object that represents the link anchor, as appropriate

-   for the link at the specified index.       

-   @param [in] index

-    A 0 based index identifies the anchor when, as in the case of an image map,

-    there is more than one link represented by this object.  The valid maximal

-    index is indicated by IAccessibleAction::nActions.

-   @param [out] anchor

-    This is an implementation dependent value.  For example, for a text link this 

-	method could return the substring of the containing string where the substring

-	is overridden with link behavior, and for an image link this method could return 

-	an IUnknown VARIANT for IAccessibleImage.  See the section about 

-	@ref _variants "VARIANTs" for additional information.

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL 

-   @retval E_INVALIDARG if bad [in] passed, [out] value is NULL 

-  */

-  [propget] HRESULT anchor

-    (

-     [in] long index,

-     [out, retval] VARIANT *anchor

-    );

-

-  /** @brief Returns an object representing the target of the link, as appropriate

-   for the link at the specified index.       

-   @param [in] index

-    A 0 based index identifies the anchor when, as in the case of an image map,

-    there is more than one link represented by this object.  The valid maximal

-    index is indicated by IAccessibleAction::nActions.

-   @param [out] anchorTarget

-    This is an implementation dependent value.  For example this method could

-	return a BSTR VARIANT of the URI.  Alternatively this method could return an

-	IUnknown VARIANT of a COM interface representing a target object to be 

-	activated when the link is activated.  See the section about 

-	@ref _variants "VARIANTs" for additional information.

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL 

-   @retval E_INVALIDARG if bad [in] passed, [out] value is NULL 

-  */

-  [propget] HRESULT anchorTarget

-    (

-     [in] long index,

-     [out, retval] VARIANT *anchorTarget

-    );

-

-  /** @brief Returns the 0 based character offset at which the textual representation of the hyperlink starts.

-

-   The returned value is related to the IAccessibleText interface of the object that 

-   owns this hyperlink. 

-   @param [out] index

-   @retval S_OK

-  */

-  [propget] HRESULT startIndex

-    (

-     [out, retval] long *index

-    );

-

-  /** @brief Returns the 0 based character offset at which the textual representation of the hyperlink ends.

-    

-   The returned value is related to the IAccessibleText interface of the object that 

-   owns this hyperlink. The character at the index is not part of the hypertext.  

-   @param [out] index

-   @retval S_OK

-  */

-  [propget] HRESULT endIndex

-    (

-     [out, retval] long *index

-    );

-

-  /** @brief Returns whether the target object referenced by this link is still valid.

-        

-   This is a volatile state that may change without sending an appropriate event.

-   Returns TRUE if the referenced target is still valid and FALSE otherwise.

-

-   This has also been used to indicate whether or not the URI of the anchorTarget

-   is malformed.

-

-   Note: This method is not being used, is deprecated, and should not be implemented or

-   used.  It is likely that this method will be removed in a later version of the IDL.

-

-   @param [out] valid

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is FALSE 

-  */

-  [propget] HRESULT valid

-    (

-     [out, retval] boolean *valid

-    );

-}

-/*************************************************************************

- *

- *  File Name (AccessibleHypertext.idl)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2008

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-import "objidl.idl";

-import "oaidl.idl";

-import "oleacc.idl";

-

-

-

-/** @brief This interface exposes information about hypertext in a document.

-

- The %IAccessibleHypertext interface is the main interface to expose

-  hyperlinks in a document, typically a text document, that are used 

-  to reference other documents.  A typical implementation is to implement 

-  this interface on the smallest text object such as a paragraph of text.

-*/

-[object, uuid(6B4F8BBF-F1F2-418a-B35E-A195BC4103B9)]

-interface IAccessibleHypertext : IAccessibleText

-{

-

-  /** @brief Returns the number of links and link groups contained within this hypertext 

-    paragraph.

-   @param [out] hyperlinkCount

-    The number of links and link groups within this hypertext paragraph.  

-    Returns 0 if there is no link.

-   @retval S_OK

-  */

-  [propget] HRESULT nHyperlinks

-    (

-     [out, retval] long *hyperlinkCount

-    );

-

-  /** @brief Returns the specified link.

-    

-   The returned IAccessibleHyperlink object encapsulates the hyperlink and 

-    provides several kinds of information describing it.

-   @param [in] index

-    This 0 based index specifies the hyperlink to return.

-   @param [out] hyperlink

-    If the given index is valid, i.e. lies in the interval from 0 to the number 

-    of links minus one, a reference to the specified hyperlink object is returned.  

-    If the index is invalid then a NULL pointer is returned.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] value is NULL 

-  */

-  [propget] HRESULT hyperlink

-    (

-     [in] long index,

-     [out, retval] IAccessibleHyperlink **hyperlink

-    );

-

-  /** @brief Returns the index of the hyperlink that is associated with this character index.

-        

-   This is the case when a link spans the given character index.

-   @param [in] charIndex

-    A 0 based index of the character for which to return the link index.  If 

-	IAccessibleText is used to represent the text containing the link, then the 

-	character index is only  valid if it is greater than or equal to zero and 

-	lower than the number of characters in the text.

-   @param [out] hyperlinkIndex

-    Returns the 0 based index of the hyperlink that is associated with this 

-	character index, or -1 if charIndex is not on a link.

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is -1

-   @retval E_INVALIDARG if bad [in] passed, [out] value is NULL 

-  */

-  [propget] HRESULT hyperlinkIndex

-    (

-     [in] long charIndex,

-     [out, retval] long *hyperlinkIndex

-    );

-

-}

-/*************************************************************************

- *

- *  File Name (AccessibleTable.idl)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2009

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-import "objidl.idl";

-import "oaidl.idl";

-import "oleacc.idl";

-

-

-

-/** @brief This interface gives access to a two-dimensional table. 

-       

- Typically all accessible objects that represent cells or cell-clusters of a table 

-  will be at the same time children of the table.  In this case IAccessible2::indexInParent

-  will return the child index which then can be used when calling IAccessibleTable::rowIndex

-  and IAccessibleTable::columnIndex.

-

- However, in some cases that kind of implementation will not be possible.  When

-  the table cells are not direct children of a table, the object representing

-  the cell can define a "table-cell-index" object attribute identifying the 0 

-  based table cell index.  This object attribute is obtained by parsing the

-  attribute string returned by IAccessible2::attributes.  The "table-cell-index"

-  attribute can be used just like a child index of the typical case.  ATs should 

-  first test for the presence of the "table-cell-index" attribute and if it is not

-  present then IAccessible2::indexInParent can be used as in the typical case

-  where cells are direct children of the table.

-              

- The range of valid coordinates for this interface are implementation dependent.  

-  However, that range includes at least the intervals from the from the first row 

-  or column with the index 0 up to the last (but not including) used row or column 

-  as returned by IAccessibleTable::nRows and IAccessibleTable::nColumns.

-

- Note that newer implementations are now using IAccessibleTable2 and IAccessibleTableCell

-  rather than this interface.

-*/

-[object, uuid(35AD8070-C20C-4fb4-B094-F4F7275DD469)]

-interface IAccessibleTable : IUnknown

-{

-

-  /** @brief Returns the accessible object at the specified row and column in 

-    the table.  This object could be an IAccessible or an IAccessible2.

-   @param [in] row

-    The 0 based row index for which to retrieve the cell.

-   @param [in] column

-    The 0 based column index for which to retrieve the cell.

-   @param [out] accessible

-    If both row and column index are valid then the corresponding accessible 

-    object is returned that represents the requested cell regardless of whether 

-    the cell is currently visible (on the screen).

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] value is NULL 

-  */

-  [propget] HRESULT accessibleAt

-    (

-     [in] long row, 

-     [in] long column,

-     [out, retval] IUnknown **accessible 

-    );

-

-  /** @brief Returns the caption for the table.  The returned object could be 

-    an IAccessible or an IAccessible2.

-   @param [out] accessible

-    If the table has a caption then a reference to it is returned, else a NULL 

-    pointer is returned.

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL 

-  */

-  [propget] HRESULT caption

-    (

-     [out, retval] IUnknown **accessible 

-    );

-	  

-  /** @brief Translates the given row and column indexes into the corresponding cell index.

-   @param [in] rowIndex

-    0 based row index for the cell.

-   @param [in] columnIndex

-    0 based column index for the cell.

-   @param [out] cellIndex

-    Returns the 0 based index of the cell at the specified row and column indexes.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] value is 0

-   @note The returned value is not necessarily a child index of the immediate parent.

-    In cases where the table cells are not direct children of the table the index 

-    is actually the cell index, i.e. conceptually it's an index into a one dimensional

-	array of cells laid out in row order.

-  */

-  [propget] HRESULT childIndex

-	(

-	 [in] long rowIndex,

-	 [in] long columnIndex,

-	 [out, retval] long *cellIndex

-	);

-

-  /** @brief Returns the description text of the specified column in the table.

-   @param [in] column

-    The 0 based index of the column for which to retrieve the description.

-   @param [out] description

-    Returns the description text of the specified column in the table if such a 

-    description exists.  Otherwise a NULL pointer is returned.

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL 

-   @retval E_INVALIDARG if bad [in] passed, [out] value is NULL

-  */

-  [propget] HRESULT columnDescription

-    (

-     [in] long column,

-     [out, retval] BSTR *description

-    );

-

-  /** @brief Returns the number of columns occupied by the accessible object 

-    at the specified row and column in the table.

-        

-   The result is greater than 1 if the specified cell spans multiple columns.

-   @param [in] row

-    0 based row index of the accessible for which to return the column extent.

-   @param [in] column

-    0 based column index of the accessible for which to return the column extent.

-   @param [out] nColumnsSpanned

-    Returns the 1 based column extent of the specified cell.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] value is 0

-  */

-  [propget] HRESULT columnExtentAt

-    (

-     [in] long row,

-     [in] long column,

-     [out, retval] long *nColumnsSpanned 

-    );

-

-  /** @brief Returns the column headers as an %IAccessibleTable object.

-        

-   Content and size of the returned table are implementation dependent.

-   @param [out] accessibleTable

-    The column header

-   @param [out] startingRowIndex

-    The 0 based row index where the header starts, usually 0.

-   @retval S_OK

-   @retval S_FALSE if there is no header, [out] values are NULL and 0 respectively 

-  */

-  [propget] HRESULT columnHeader

-    (

-     [out] IAccessibleTable **accessibleTable,

-	 [out, retval] long *startingRowIndex

-    );

-

-  /** @brief Translates the given cell index into the corresponding column index.

-   @param [in] cellIndex

-    0 based index of the cell in the parent or closest ancestor table.  Typically this

-	is the value returned from IAccessible2::indexInParent, but in the case where the 

-	table cells are not direct children of the table this is the cell index specified 

-	by the "table-cell-index" object attribute obtained from parsing the attributes 

-	string returned by calling IAccessible2::attributes on the cell object.

-   @param [out] columnIndex

-    Returns the 0 based column index of the cell of the specified child or the index of 

-    the first column if the child spans multiple columns.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] value is 0

-  */

-  [propget] HRESULT columnIndex

-    (

-	 [in] long cellIndex,

-	 [out, retval] long *columnIndex

-	);

-

-  /** @brief Returns the total number of columns in table

-   @param [out] columnCount

-    Number of columns in table (including columns outside the current viewport)

-   @retval S_OK

-  */

-  [propget] HRESULT nColumns

-    (

-     [out, retval] long *columnCount 

-    );

-

-  /** @brief Returns the total number of rows in table

-   @param [out] rowCount

-    Number of rows in table (including rows outside the current viewport)

-   @retval S_OK

-  */

-  [propget] HRESULT nRows

-    (

-     [out, retval] long *rowCount 

-    );

-

-  /** @brief Returns the total number of selected cells

-   @param [out] cellCount

-    Number of cells currently selected

-   @retval S_OK

-  */

-  [propget] HRESULT nSelectedChildren

-    (

-	 [out, retval] long *cellCount

-	);

-

-  /** @brief Returns the total number of selected columns

-   @param [out] columnCount

-    Number of columns currently selected

-   @retval S_OK

-  */

-  [propget] HRESULT nSelectedColumns

-    (

-     [out, retval] long *columnCount 

-    );

-

-  /** @brief Returns the total number of selected rows

-   @param [out] rowCount

-    Number of rows currently selected

-   @retval S_OK

-  */

-  [propget] HRESULT nSelectedRows

-    (

-     [out, retval] long *rowCount 

-    );

-

-  /** @brief Returns the description text of the specified row in the table.

-   @param [in] row

-    The 0 based index of the row for which to retrieve the description.

-   @param [out] description

-    Returns the description text of the specified row in the table if such a 

-    description exists.  Otherwise a NULL pointer is returned.

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL 

-   @retval E_INVALIDARG if bad [in] passed, [out] value is NULL

-  */

-  [propget] HRESULT rowDescription

-    (

-     [in] long row, 

-     [out, retval] BSTR *description

-    );

-

-  /** @brief Returns the number of rows occupied by the accessible object 

-    at the specified row and column in the table.

-        

-   The result is greater than 1 if the specified cell spans multiple rows.

-   @param [in] row

-    0 based row index of the accessible for which to return the row extent.

-   @param [in] column

-    0 based column index of the accessible for which to return the row extent.

-   @param [out] nRowsSpanned

-    Returns the row extent of the specified cell.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] value is 0

-  */

-  [propget] HRESULT rowExtentAt

-    (

-     [in] long row,

-     [in] long column,

-     [out, retval] long *nRowsSpanned

-    );

-

-  /** @brief Returns the row headers as an %IAccessibleTable object.

-        

-   Content and size of the returned table are implementation dependent.

-   @param [out] accessibleTable

-    The row header.

-   @param [out] startingColumnIndex

-    The 0 based column index where the header starts, usually 0.

-   @retval S_OK

-   @retval S_FALSE if there is no header, [out] values are NULL and 0 respectively 

-  */

-  [propget] HRESULT rowHeader

-    (

-     [out] IAccessibleTable **accessibleTable,

-	 [out, retval] long *startingColumnIndex

-    );

-

-  /** @brief Translates the given cell index into a row index.

-   @param [in] cellIndex

-    0 based index of the cell in the parent or closest ancestor table.  Typically this 

-	is the value returned from IAccessible2::indexInParent, but in the case where the 

-	table cells are not direct children of the table this is the cell index specified 

-	by the "table-cell-index" object attribute obtained from parsing the attributes 

-	string returned by calling IAccessible2::attributes on the cell object.

-   @param [out] rowIndex

-    0 based row index

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] value is 0

-  */

-  [propget] HRESULT rowIndex

-    (

-	 [in] long cellIndex,

-	 [out, retval] long *rowIndex 

-	);

-

-  /** @brief Returns a list of cell indexes currently selected (0 based).

-   @param [in] maxChildren

-    This parameter is ignored. Refer to @ref _arrayConsideration

-	"Special Consideration when using Arrays" for more details.

-   @param [out] children

-    An array of cell indexes of selected cells (each index is 0 based), 

-	allocated by the server. Free it with CoTaskMemFree.

-   @param [out] nChildren

-    The number of cell indexes returned; the size of the returned array.

-   @retval S_OK

-   @retval S_FALSE if there are none, [out] values are NULL and 0 respectively 

-  */

-  [propget] HRESULT selectedChildren

-    (

-     [in] long maxChildren,

-     [out, size_is(,maxChildren), length_is(,*nChildren)] long **children,

-     [out, retval] long *nChildren

-    );

-

-  /** @brief Returns a list of column indexes currently selected (0 based).

-   @param [in] maxColumns

-    This parameter is ignored. Refer to @ref _arrayConsideration 

-	"Special Consideration when using Arrays" for more details.

-   @param [out] columns

-	An array of column indexes of selected columns (each index is 0 based), allocated

-	by the server. Free it with CoTaskMemFree.

-   @param [out] nColumns

-    The number of column indexes returned; the size of the returned array.

-   @retval S_OK

-   @retval S_FALSE if there are none, [out] values are NULL and 0 respectively 

-  */

-  [propget] HRESULT selectedColumns

-    (

-     [in] long maxColumns,

-     [out, size_is(,maxColumns), length_is(,*nColumns)] long **columns,

-     [out, retval] long *nColumns

-    );

-

-  /** @brief Returns a list of row indexes currently selected (0 based).

-   @param [in] maxRows

-    This parameter is ignored. Refer to @ref _arrayConsideration

-	"Special Consideration when using Arrays" for more details.

-   @param [out] rows

-    An array of row indexes of selected rows (each index is 0 based), allocated

-	by the server. Free it with CoTaskMemFree.

-   @param [out] nRows

-    The number of row indexes returned; the size of the returned array.

-   @retval S_OK

-   @retval S_FALSE if there are none, [out] values are NULL and 0 respectively 

-  */

-  [propget] HRESULT selectedRows

-    (

-     [in] long maxRows, 

-     [out, size_is(,maxRows), length_is(,*nRows)] long **rows, 

-     [out, retval] long *nRows 

-    );

-

-  /** @brief Returns the summary description of the table.  The returned object could be 

-    an IAccessible or an IAccessible2.

-   @param [out] accessible

-    Returns a reference to an implementation dependent accessible object 

-    representing the table's summary or a NULL pointer if the table 

-    does not support a summary.

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL 

-  */

-  [propget] HRESULT summary

-    (

-     [out, retval] IUnknown **accessible 

-    );

-

-  /** @brief Returns a boolean value indicating whether the specified column is 

-    completely selected.

-   @param [in] column

-    0 based index of the column for which to determine whether it is selected.

-   @param [out] isSelected

-    Returns TRUE if the specified column is selected completely and FALSE otherwise.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] value is FALSE

-  */

-  [propget] HRESULT isColumnSelected

-    (

-     [in] long column,

-     [out, retval] boolean *isSelected

-    );

-

-  /** @brief Returns a boolean value indicating whether the specified row is completely 

-    selected.

-   @param [in] row

-    0 based index of the row for which to determine whether it is selected.

-   @param [out] isSelected

-    Returns TRUE if the specified row is selected completely and FALSE otherwise.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] value is FALSE

-  */

-  [propget] HRESULT isRowSelected

-    (

-     [in] long row,

-     [out, retval] boolean *isSelected

-    );

-

-  /** @brief Returns a boolean value indicating whether the specified cell is selected.

-   @param [in] row

-    0 based index of the row for the cell to determine whether it is selected.

-   @param [in] column

-    0 based index of the column for the cell to determine whether it is selected.

-   @param [out] isSelected

-    Returns TRUE if the specified cell is selected and FALSE otherwise.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] value is FALSE

-  */

-  [propget] HRESULT isSelected

-    (

-     [in] long row,

-     [in] long column,

-     [out, retval] boolean *isSelected 

-    );

-

-  /** @brief Selects a row and unselects all previously selected rows.

-   @param [in] row

-    0 based index of the row to be selected.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT selectRow

-    (

-     [in] long row 

-    );

-

-  /** @brief Selects a column and unselects all previously selected columns.

-   @param [in] column

-    0 based index of the column to be selected.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT selectColumn

-    (

-     [in] long column

-    );

-

-  /** @brief Unselects one row, leaving other selected rows selected (if any).

-   @param [in] row

-    0 based index of the row to be unselected.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT unselectRow

-    (

-     [in] long row

-    );

-

-  /** @brief Unselects one column, leaving other selected columns selected (if any).

-   @param [in] column

-    0 based index of the column to be unselected.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT unselectColumn

-    (

-     [in] long column

-    );

-  

-  /** @brief Given a cell index, gets the row and column indexes and extents of a cell 

-    and whether or not it is selected.

-

-   This is a convenience function.  It is not mandatory to implement it.

-   @param [in] index

-    0 based index of this cell in the table.

-   @param [out] row

-    0 based row index.

-   @param [out] column

-    0 based column index.

-   @param [out] rowExtents

-    Number of cells spanned by this cell in this row.

-   @param [out] columnExtents

-    Number of cells spanned by this cell in this column.

-   @param [out] isSelected

-    Indicates if the specified cell is selected.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] values are 0s and FALSE respectively

-  */

-  [propget] HRESULT rowColumnExtentsAtIndex

-    (

-	 [in] long index, 

-	 [out] long *row,  

-	 [out] long *column,

-	 [out] long *rowExtents,

-	 [out] long *columnExtents,

-	 [out, retval] boolean *isSelected

-	);

-

-  /** @brief Returns the type and extents describing how a table changed.

-  

-   Provided for use by the IA2_EVENT_TABLE_MODEL_CHANGED event handler.

-

-   This data is only guaranteed to be valid while the thread notifying the event 

-   continues. Once the handler has returned, the validity of the data depends on 

-   how the server manages the life cycle of its objects. Also, note that the server 

-   may have different life cycle management strategies for controls depending on 

-   whether or not a control manages its children. Lists, trees, and tables can have 

-   a large number of children and thus it's possible that the child objects for those 

-   controls would only be created as needed. Servers should document their life cycle 

-   strategy as this will be of interest to assistive technology or script engines 

-   accessing data out of process or from other threads. Servers only need to save the 

-   most recent row and column values associated with the change and a scope of the 

-   entire application is adequate.

-

-   @param [out] modelChange

-    A struct of (type(insert, delete, update), firstRow, lastRow, firstColumn, lastColumn).

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL 

-  */

-  [propget] HRESULT modelChange

-    (

-	 [out, retval] IA2TableModelChange *modelChange

-    );

-

-}

-/*************************************************************************

- *

- *  File Name (AccessibleTable2.idl)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2009

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-import "objidl.idl";

-import "oaidl.idl";

-import "oleacc.idl";

-

-

-

-/** @brief This interface gives access to a two-dimensional table.

-

- Please also refer to the IAccessibleTableCell interface.

-

- If you want to support older applications you should also support the

-  IAccessibleTable inteface.

-*/

-[object, uuid(6167f295-06f0-4cdd-a1fa-02e25153d869)]

-interface IAccessibleTable2 : IUnknown

-{

-

-  /** @brief Returns the accessible object at the specified row and column in 

-    the table.  This object could be an IAccessible or an IAccessible2.

-   @param [in] row

-    The 0 based row index for which to retrieve the cell.

-   @param [in] column

-    The 0 based column index for which to retrieve the cell.

-   @param [out] cell

-    If both row and column index are valid then the corresponding accessible 

-    object is returned that represents the requested cell regardless of whether 

-    the cell is currently visible (on the screen).

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] value is NULL 

-  */

-  [propget] HRESULT cellAt

-    (

-     [in] long row, 

-     [in] long column,

-     [out, retval] IUnknown **cell

-    );

-

-  /** @brief Returns the caption for the table.  The returned object could be 

-    an IAccessible or an IAccessible2.

-   @param [out] accessible

-    If the table has a caption then a reference to it is returned, else a NULL 

-    pointer is returned.

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL 

-  */

-  [propget] HRESULT caption

-    (

-     [out, retval] IUnknown **accessible

-    );

-	  

-  /** @brief Returns the description text of the specified column in the table.

-   @param [in] column

-    The 0 based index of the column for which to retrieve the description.

-   @param [out] description

-    Returns the description text of the specified column in the table if such a 

-    description exists.  Otherwise a NULL pointer is returned.

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL 

-   @retval E_INVALIDARG if bad [in] passed, [out] value is NULL

-  */

-  [propget] HRESULT columnDescription

-    (

-     [in] long column,

-     [out, retval] BSTR *description

-    );

-

-

-  /** @brief Returns the total number of columns in table

-   @param [out] columnCount

-    Number of columns in table (including columns outside the current viewport)

-   @retval S_OK

-  */

-  [propget] HRESULT nColumns

-    (

-     [out, retval] long *columnCount 

-    );

-

-  /** @brief Returns the total number of rows in table

-   @param [out] rowCount

-    Number of rows in table (including rows outside the current viewport)

-   @retval S_OK

-  */

-  [propget] HRESULT nRows

-    (

-     [out, retval] long *rowCount 

-    );

-

-  /** @brief Returns the total number of selected cells

-   @param [out] cellCount

-    Number of cells currently selected

-   @retval S_OK

-  */

-  [propget] HRESULT nSelectedCells

-    (

-     [out, retval] long *cellCount

-    );

-

-  /** @brief Returns the total number of selected columns

-   @param [out] columnCount

-    Number of columns currently selected

-   @retval S_OK

-  */

-  [propget] HRESULT nSelectedColumns

-    (

-     [out, retval] long *columnCount 

-    );

-

-  /** @brief Returns the total number of selected rows

-   @param [out] rowCount

-    Number of rows currently selected

-   @retval S_OK

-  */

-  [propget] HRESULT nSelectedRows

-    (

-     [out, retval] long *rowCount 

-    );

-

-  /** @brief Returns the description text of the specified row in the table.

-   @param [in] row

-    The 0 based index of the row for which to retrieve the description.

-   @param [out] description

-    Returns the description text of the specified row in the table if such a 

-    description exists.  Otherwise a NULL pointer is returned.

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL 

-   @retval E_INVALIDARG if bad [in] passed, [out] value is NULL

-  */

-  [propget] HRESULT rowDescription

-    (

-     [in] long row, 

-     [out, retval] BSTR *description

-    );

-

-  /** @brief Returns a list of accessibles currently selected.

-   @param [out] cells

-    Pointer to an array of references to selected accessibles.  The array is

-    allocated by the server.  Free it with CoTaskMemFree.

-   @param [out] nSelectedCells

-    The number of accessibles returned; the size of the returned array.

-   @retval S_OK

-   @retval S_FALSE if there are none, [out] values are NULL and 0 respectively 

-  */

-  [propget] HRESULT selectedCells

-    (

-     [out, size_is(,*nSelectedCells,)] IUnknown ***cells,

-     [out, retval] long *nSelectedCells

-    );

-

-  /** @brief Returns a list of column indexes currently selected (0 based).

-   @param [out] selectedColumns

-    A pointer to an array of column indexes of selected columns (each index is

-    0 based).  The array is allocated by the server. Free it with CoTaskMemFree.

-   @param [out] nColumns

-    The number of column indexes returned; the size of the returned array.

-   @retval S_OK

-   @retval S_FALSE if there are none, [out] values are NULL and 0 respectively 

-  */

-  [propget] HRESULT selectedColumns

-    (

-     [out, size_is(,*nColumns)] long **selectedColumns,

-     [out, retval] long *nColumns

-    );

-

-  /** @brief Returns a list of row indexes currently selected (0 based).

-   @param [out] selectedRows

-    An array of row indexes of selected rows (each index is 0 based), allocated

-    by the server. Free it with CoTaskMemFree.

-   @param [out] nRows

-    The number of row indexes returned; the size of the returned array.

-   @retval S_OK

-   @retval S_FALSE if there are none, [out] values are NULL and 0 respectively 

-  */

-  [propget] HRESULT selectedRows

-    (

-     [out, size_is(,*nRows)] long **selectedRows, 

-     [out, retval] long *nRows 

-    );

-

-  /** @brief Returns the summary description of the table.  The returned object could be 

-    an IAccessible or an IAccessible2.

-   @param [out] accessible

-    Returns a reference to an implementation dependent accessible object 

-    representing the table's summary or a NULL pointer if the table 

-    does not support a summary.

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL 

-  */

-  [propget] HRESULT summary

-    (

-     [out, retval] IUnknown **accessible 

-    );

-

-  /** @brief Returns a boolean value indicating whether the specified column is 

-    completely selected.

-   @param [in] column

-    0 based index of the column for which to determine whether it is selected.

-   @param [out] isSelected

-    Returns TRUE if the specified column is selected completely and FALSE otherwise.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] value is FALSE

-  */

-  [propget] HRESULT isColumnSelected

-    (

-     [in] long column,

-     [out, retval] boolean *isSelected

-    );

-

-  /** @brief Returns a boolean value indicating whether the specified row is completely 

-    selected.

-   @param [in] row

-    0 based index of the row for which to determine whether it is selected.

-   @param [out] isSelected

-    Returns TRUE if the specified row is selected completely and FALSE otherwise.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed, [out] value is FALSE

-  */

-  [propget] HRESULT isRowSelected

-    (

-     [in] long row,

-     [out, retval] boolean *isSelected

-    );

-

-  /** @brief Selects a row and unselects all previously selected rows.

-

-   The behavior should mimic that of the application, but for those applications

-    which do not have a means in the GUI to select a full row of cells the behavior 

-    should be as follows:  First any selected rows in the table are unselected.  Then

-    the entire row of cells for the specified row is selected.  If any of the

-    cells in the selected row span additional rows, the cells in those rows

-    are also selected. 

-   @param [in] row

-    0 based index of the row to be selected.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT selectRow

-    (

-     [in] long row 

-    );

-

-  /** @brief Selects a column and unselects all previously selected columns.

-

-   The behavior should mimic that of the application, but for those applications

-    which do not have a means in the GUI to select a full column of cells the behavior 

-    should be as follows:  First any selected columns in the table are unselected.  Then

-    the entire column of cells for the specified column is selected.  If any of the

-    cells in the selected column span additional columns, the cells in those columns

-    are also selected. 

-   @param [in] column

-    0 based index of the column to be selected.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT selectColumn

-    (

-     [in] long column

-    );

-

-  /** @brief Unselects one row, leaving other selected rows selected (if any).

-

-   The behavior should mimic that of the application, but for those applications

-    which do not have a means in the GUI to unselect a full row of cells the

-    behavior should be as follows:  The entire row of cells for the specified

-    row is unselected.  If any of the cells in the selected row span additional

-    rows, the cells in those rows are also unselected. 

-   @param [in] row

-    0 based index of the row to be unselected.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT unselectRow

-    (

-     [in] long row

-    );

-

-  /** @brief Unselects one column, leaving other selected columns selected (if any).

-

-   The behavior should mimic that of the application, but for those applications

-    which do not have a means in the GUI to unselect a full column of cells the

-    behavior should be as follows:  The entire column of cells for the specified

-    column is unselected.  If any of the cells in the selected column span additional

-    columns, the cells in those columns are also unselected. 

-   @param [in] column

-    0 based index of the column to be unselected.

-   @retval S_OK

-   @retval E_INVALIDARG if bad [in] passed

-  */

-  HRESULT unselectColumn

-    (

-     [in] long column

-    );

-

-  /** @brief Returns the type and extents describing how a table changed.

-  

-   Provided for use by the IA2_EVENT_TABLE_MODEL_CHANGED event handler.

-

-   This data is only guaranteed to be valid while the thread notifying the event 

-   continues. Once the handler has returned, the validity of the data depends on 

-   how the server manages the life cycle of its objects. Also, note that the server 

-   may have different life cycle management strategies for controls depending on 

-   whether or not a control manages its children. Lists, trees, and tables can have 

-   a large number of children and thus it's possible that the child objects for those 

-   controls would only be created as needed. Servers should document their life cycle 

-   strategy as this will be of interest to assistive technology or script engines 

-   accessing data out of process or from other threads. Servers only need to save the 

-   most recent row and column values associated with the change and a scope of the 

-   entire application is adequate.

-

-   @param [out] modelChange

-    A struct of (type(insert, delete, update), firstRow, lastRow, firstColumn, lastColumn).

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL 

-  */

-  [propget] HRESULT modelChange

-    (

-     [out, retval] IA2TableModelChange *modelChange

-    );

-

-}

-/*************************************************************************

- *

- *  File Name (AccessibleTableCell.idl)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2009

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-import "objidl.idl";

-import "oaidl.idl";

-import "oleacc.idl";

-

-

-/** @brief This interface gives access to the cells of a two-dimensional table.

-

- Please also refer to the IAccessibleTable2 interface.

-

-*/

-[object, uuid(594116B1-C99F-4847-AD06-0A7A86ECE645)]

-interface IAccessibleTableCell : IUnknown

-{

-

-  /** @brief Returns the number of columns occupied by this cell accessible.

-        

-   The result is greater than 1 if the specified cell spans multiple columns.

-   @param [out] nColumnsSpanned

-    Returns the 1 based column extent of the specified cell.

-   @retval S_OK

-  */

-  [propget] HRESULT columnExtent

-    (

-     [out, retval] long *nColumnsSpanned 

-    );

-

-  /** @brief Returns the column headers as an array of cell accessibles.

-

-   @param [out] cellAccessibles

-    Pointer to an array of references to cell accessibles.  The array is allocated

-	by the server.  Free it with CoTaskMemFree.

-   @param [out] nColumnHeaderCells

-    The number of accessibles returned; the size of the returned array.

-   @retval S_OK

-   @retval S_FALSE if there is no header, [out] values are NULL and 0 respectively 

-  */

-  [propget] HRESULT columnHeaderCells

-    (

-     [out, size_is(,*nColumnHeaderCells,)] IUnknown ***cellAccessibles,

-     [out, retval] long *nColumnHeaderCells

-    );

-

-  /** @brief Translates this cell accessible into the corresponding column index.

-

-   @param [out] columnIndex

-    Returns the 0 based column index of the cell of the specified cell or the index of 

-    the first column if the cell spans multiple columns.

-   @retval S_OK

-  */

-  [propget] HRESULT columnIndex

-    (

-     [out, retval] long *columnIndex

-    );

-

-  /** @brief Returns the number of rows occupied by this cell accessible.

-        

-   @param [out] nRowsSpanned

-    Returns the row extent of the specified cell.

-   @retval S_OK

-  */

-  [propget] HRESULT rowExtent

-    (

-     [out, retval] long *nRowsSpanned

-    );

-

-  /** @brief Returns the row headers as an array of cell accessibles.

-

-   @param [out] cellAccessibles

-    Pointer to an array of references to cell accessibles.  The array is allocated

-	by the server.  Free it with CoTaskMemFree.

-   @param [out] nRowHeaderCells

-    The number of accessibles returned; the size of the returned array.

-   @retval S_OK

-   @retval S_FALSE if there is no header, [out] values are NULL and 0 respectively 

-  */

-  [propget] HRESULT rowHeaderCells

-    (

-     [out, size_is(,*nRowHeaderCells,)] IUnknown ***cellAccessibles,

-     [out, retval] long *nRowHeaderCells

-    );

-

-  /** @brief Translates this cell accessible into the corresponding row index.

-

-   @param [out] rowIndex

-    Returns the 0 based row index of the specified cell or the index of 

-    the first row if the cell spans multiple rows.

-   @retval S_OK

-  */

-  [propget] HRESULT rowIndex

-    (

-     [out, retval] long *rowIndex 

-    );

-

-  /** @brief Returns a boolean value indicating whether this cell is selected.

-

-   @param [out] isSelected

-    Returns TRUE if the specified cell is selected and FALSE otherwise.

-   @retval S_OK

-  */

-  [propget] HRESULT isSelected

-    (

-     [out, retval] boolean *isSelected 

-    );

-  

-  /** @brief Gets the row and column indexes and extents of this cell accessible

-    and whether or not it is selected.

-

-   This is a convenience function.  It is not mandatory to implement it.

-   @param [out] row

-    0 based row index.

-   @param [out] column

-    0 based column index.

-   @param [out] rowExtents

-    Number of cells spanned by this cell in this row.

-   @param [out] columnExtents

-    Number of cells spanned by this cell in this column.

-   @param [out] isSelected

-    Indicates if the specified cell is selected.

-   @retval S_OK

-  */

-  [propget] HRESULT rowColumnExtents

-    (

-     [out] long *row,  

-     [out] long *column,

-     [out] long *rowExtents,

-     [out] long *columnExtents,

-     [out, retval] boolean *isSelected

-    );

-

-  /** @brief Returns a reference to the accessbile of the containing table.

-

-   @param [out] table

-    Returns a reference to the IUnknown of the containing table.

-   @retval S_OK

-  */

-  [propget] HRESULT table

-    (

-     [out, retval] IUnknown **table

-    );

-

-}

-/*************************************************************************

- *

- *  File Name (AccessibleImage)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2008

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-import "objidl.idl";

-import "oaidl.idl";

-import "oleacc.idl";

-

-

-/** @brief This interface represents images and icons.

-

- This interface is used for a representation of images like icons on buttons.

-  %IAccessibleImage only needs to be implemented in certain situations.  Some

-  examples are:

-  <ol>

-   <li>The accessible name and description are not enough to fully

-    describe the image, e.g. when the accessible description is used to define the

-    behavior of an actionable image and the image itself conveys semantically

-    significant information.

-   <li>The user can edit the content that includes an

-    image and therefore the user needs to be able to review the image's position.

-  </ol>

-*/

-[object, uuid(FE5ABB3D-615E-4f7b-909F-5F0EDA9E8DDE)]

-interface IAccessibleImage : IUnknown

-{

-  /** @brief Returns the localized description of the image.          

-   @param [out] description

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL

-  */

-  [propget] HRESULT description

-    (

-     [out, retval] BSTR *description

-    );

-

-  /** @brief Returns the coordinates of the image.

-   @param [in] coordinateType

-    Specifies whether the returned coordinates should be relative to the screen or the parent object.

-   @param [out] x

-   @param [out] y

-   @retval S_OK

-  */

-  [propget] HRESULT imagePosition

-    (

-	 [in] enum IA2CoordinateType coordinateType,

-	 [out] long *x,

-     [out, retval] long *y

-    );

-

-  /** @brief Returns the size of the image in units specified by parent's coordinate system.

-   @param [out] height

-   @param [out] width

-   @retval S_OK

-  */

-

-  [propget] HRESULT imageSize

-    (

-     [out] long *height,

-	 [out, retval] long *width

-    );

-}

-/*************************************************************************

- *

- *  File Name (AccessibleEventID.idl)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2008

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-/** %IAccessible2 specific event constants 

-

- This enum defines the event IDs fired by %IAccessible2 objects.  The event IDs

- are in addition to those used by MSAA.

-*/

-enum IA2EventID {

-

-  /** The change of the number or attributes of actions of an accessible

-    object is signaled by events of this type. 

-  */

-  IA2_EVENT_ACTION_CHANGED = 0x101,

-

-  /** The active descendant of a component has changed.

-	

-	Note: This event constant is misspelled and thus is deprecated and will be

-	removed in a later version. Please use the correctly spelled version which

-	follows.

-  */

-  IA2_EVENT_ACTIVE_DECENDENT_CHANGED,

-

-  /** The active descendant of a component has changed.  The active descendant 

-    is used in objects with transient children.  

-

-    Note: Due to the fact that MSAA's WinEvents don't allow the active child index

-	to be passed on the IA2_EVENT_ACTIVE_DESCENDANT_CHANGED event the manages

-	descendants	scheme can't be used.  Instead the active child object has to fire

-	MSAA's EVENT_OBJECT_FOCUS.  In a future release a new event mechanism may be

-	added to provide for event specific data to be passed with the event.  At that

-	time the IA2_EVENT_ACTIVE_DECENDENT_CHANGED event and

-	IA2_STATE_MANAGES_DESCENDANTS state would be useful.

-  */

-  IA2_EVENT_ACTIVE_DESCENDANT_CHANGED = IA2_EVENT_ACTIVE_DECENDENT_CHANGED,

-

-  /** The document wide attributes of the document object have changed.

-  */

-  IA2_EVENT_DOCUMENT_ATTRIBUTE_CHANGED,

-

-  /** The contents of the document have changed.

-  */

-  IA2_EVENT_DOCUMENT_CONTENT_CHANGED,

-

-  /** The loading of the document has completed.

-  */

-  IA2_EVENT_DOCUMENT_LOAD_COMPLETE,

-

-  /** The loading of the document was interrupted.

-  */

-  IA2_EVENT_DOCUMENT_LOAD_STOPPED,

-

-  /** The document contents are being reloaded.

-  */

-  IA2_EVENT_DOCUMENT_RELOAD,

-

-  /** The ending index of this link within the containing string has changed.

-  */

-  IA2_EVENT_HYPERLINK_END_INDEX_CHANGED,

-

-  /** The number of anchors associated with this hyperlink object has changed.

-  */

-  IA2_EVENT_HYPERLINK_NUMBER_OF_ANCHORS_CHANGED,

-

-  /** The hyperlink selected state changed from selected to unselected or

-    from unselected to selected.

-  */

-  IA2_EVENT_HYPERLINK_SELECTED_LINK_CHANGED,

-

-  /** One of the links associated with the hypertext object has been activated.

-  */

-  IA2_EVENT_HYPERTEXT_LINK_ACTIVATED,

-

-  /** One of the links associated with the hypertext object has been selected.

-  */

-  IA2_EVENT_HYPERTEXT_LINK_SELECTED,

-

-  /** The starting index of this link within the containing string has changed.

-  */

-  IA2_EVENT_HYPERLINK_START_INDEX_CHANGED,

-

-  /** Focus has changed from one hypertext object to another, or focus moved

-   from a non-hypertext object to a hypertext object, or focus moved from a

-   hypertext object to a non-hypertext object.

-  */

-  IA2_EVENT_HYPERTEXT_CHANGED,

-

-  /** The number of hyperlinks associated with a hypertext object changed

-  */

-  IA2_EVENT_HYPERTEXT_NLINKS_CHANGED,

-

-  /** An object's attributes changed.

-  Also see ::IA2_EVENT_TEXT_ATTRIBUTE_CHANGED.

-  */

-  IA2_EVENT_OBJECT_ATTRIBUTE_CHANGED,

-

-  /** A slide changed in a presentation document or a page boundary was 

-   crossed in a word processing document.

-  */

-  IA2_EVENT_PAGE_CHANGED,  

-

-  /** The caret moved from one section to the next.

-  */

-  IA2_EVENT_SECTION_CHANGED,

-  

-  /** A table caption changed.

-  */

-  IA2_EVENT_TABLE_CAPTION_CHANGED,

-

-  /** A table's column description changed.

-  */

-  IA2_EVENT_TABLE_COLUMN_DESCRIPTION_CHANGED,

-

-  /** A table's column header changed.

-  */

-  IA2_EVENT_TABLE_COLUMN_HEADER_CHANGED,

-

-  /** A table's data changed.

-  */

-  IA2_EVENT_TABLE_MODEL_CHANGED,

-

-  /** A table's row description changed.

-  */

-  IA2_EVENT_TABLE_ROW_DESCRIPTION_CHANGED,

-

-  /** A table's row header changed.

-  */

-  IA2_EVENT_TABLE_ROW_HEADER_CHANGED,

-

-  /** A table's summary changed.

-  */

-  IA2_EVENT_TABLE_SUMMARY_CHANGED,

-

-  /** A text object's attributes changed.

-  Also see ::IA2_EVENT_OBJECT_ATTRIBUTE_CHANGED.

-  */

-  IA2_EVENT_TEXT_ATTRIBUTE_CHANGED,

-

-  /** The caret has moved to a new position.

-  */

-  IA2_EVENT_TEXT_CARET_MOVED,

-

-  /** <b>Deprecated.</b>  This event is equivalent to ::IA2_EVENT_TEXT_UPDATED.

-  */

-  IA2_EVENT_TEXT_CHANGED,

-

-  /** The caret moved from one column to the next.

-  */

-  IA2_EVENT_TEXT_COLUMN_CHANGED,

-

-  /** Text was inserted.

-  */

-  IA2_EVENT_TEXT_INSERTED,

-

-  /** Text was removed.

-  */

-  IA2_EVENT_TEXT_REMOVED,

-

-  /** This event indicates general text changes, i.e. changes to text that are 

-    exposed through the IAccessibleText interface.  For compatibility with ATK/AT-SPI

-	which does not have an equivalent event, servers can alternatively fire 

-	::IA2_EVENT_TEXT_REMOVED and ::IA2_EVENT_TEXT_INSERTED.

-  */

-  IA2_EVENT_TEXT_UPDATED,

-

-  /** The text selection changed.  Later versions of Microsoft development environments 

-   have an equivalent event identified, EVENT_OBJECT_TEXTSELECTIONCHANGED.  Servers 

-   should use that if it is available and use IA2_EVENT_TEXT_SELECTION_CHANGED otherwise.  

-   Clients should be prepared to respond to either event.

-

-  */

-  IA2_EVENT_TEXT_SELECTION_CHANGED,

-

-  /** A visible data event indicates the change of the visual appearance

-    of an accessible object.  This includes for example most of the

-    attributes available via the IAccessibleComponent interface.

-  */

-  IA2_EVENT_VISIBLE_DATA_CHANGED

-

-};

-/*************************************************************************

- *

- *  File Name (AccessibleApplication.idl)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2008

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-import "objidl.idl";

-import "oaidl.idl";

-import "oleacc.idl";

-

-/** @brief This interface gives access to the application's name and version information.

-        

- This interface provides the AT with the information it needs to differentiate 

- this application from other applications, from other versions of this 

- application, or from other versions of this application running on different 

- versions of an accessibility bridge or accessibility toolkit.

-

- Servers implementing IAccessible2 should provide access to the %IAccessibleApplication 

- interface via QueryService from any object so that ATs can easily determine specific 

- information about the application such as its name or version.

-*/

-[object, uuid(D49DED83-5B25-43F4-9B95-93B44595979E)]

-interface IAccessibleApplication : IUnknown

-{

-  

-  /** @brief Returns the application name.

-   @param [out] name

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL

-  */

-  [propget] HRESULT appName

-    (

-     [out, retval] BSTR *name

-    );

-

-  /** @brief Returns the application version.

-   @param [out] version

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL

-  */

-  [propget] HRESULT appVersion

-    (

-     [out, retval] BSTR *version

-    );

-

-  /** @brief Returns the toolkit/bridge name.

-   @param [out] name

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL

-  */

-  [propget] HRESULT toolkitName

-    (

-     [out, retval] BSTR *name

-    );

-

-  /** @brief Returns the toolkit/bridge version.

-   @param [out] version

-   @retval S_OK

-   @retval S_FALSE if there is nothing to return, [out] value is NULL

-  */

-  [propget] HRESULT toolkitVersion

-    (

-     [out, retval] BSTR *version

-    );  

-

-}

-

-/*************************************************************************

- *

- *  File Name (IA2TypeLibrary.idl)

- *

- *  IAccessible2 IDL Specification

- *

- *  Copyright (c) Linux Foundation 2007, 2009

- *  Copyright (c) IBM Corp. 2006

- *  Copyright (c) Sun Microsystems, Inc. 2000, 2006

- *

- *  This library is free software; you can redistribute it and/or

- *  modify it under the terms of the GNU Lesser General Public

- *  License version 2.1, as published by the Free Software Foundation; either

- *  version 2.1 of the License, or (at your option) any later version.

- *

- *  This library is distributed in the hope that it will be useful,

- *  but WITHOUT ANY WARRANTY; without even the implied warranty of

- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- *  Lesser General Public License for more details.

- *

- *  You should have received a copy of the GNU Lesser General Public

- *  License along with this library; if not, write to the Free Software

- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02110-1301  USA

- *

- ************************************************************************/

-

-// This is not a standalone file.  It is to be appended to the end of the 

-// merged IDL file.

-

-cpp_quote("")

-cpp_quote("// Type Library Definitions")

-cpp_quote("")

-

-[

-    uuid(c974e070-3787-490a-87b0-e333b06ca1e2),

-	helpstring("IAccessible2 Type Library"),

-    version(1.1),

-    hidden

-]

-

-library IAccessible2Lib

-{

-    importlib ("stdole2.tlb");

-    interface IAccessible2;

-    interface IAccessibleAction;

-    interface IAccessibleApplication;

-    interface IAccessibleComponent;

-    interface IAccessibleEditableText;

-    interface IAccessibleHyperlink;

-    interface IAccessibleHypertext;

-    interface IAccessibleImage;

-    interface IAccessibleRelation;

-    interface IAccessibleTable;

-    interface IAccessibleTable2;

-    interface IAccessibleTableCell;

-    interface IAccessibleText;

-    interface IAccessibleValue;

-	enum IA2CoordinateType;

-	enum IA2EventID;

-	enum IA2Role;

-	enum IA2ScrollType;

-	enum IA2States;

-	enum IA2TableModelChangeType;

-	enum IA2TextBoundaryType;

-	enum IA2TextSpecialOffsets;

-}

diff --git a/third_party/iaccessible2/iaccessible2.gyp b/third_party/iaccessible2/iaccessible2.gyp
deleted file mode 100644
index 3853c7b..0000000
--- a/third_party/iaccessible2/iaccessible2.gyp
+++ /dev/null
@@ -1,41 +0,0 @@
-# Copyright (c) 2010 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-{
-  'includes': [
-    '../../build/common.gypi',
-  ],
-
-  'target_defaults': {
-    'include_dirs': [
-      '.',
-      '<(INTERMEDIATE_DIR)',
-    ],
-  },
-  'targets': [
-    {
-      'target_name': 'iaccessible2',
-      'type': '<(library)',
-      'msvs_guid': 'C974E070-3787-490A-87B0-E333B06CA1E2',
-      'sources': [
-        'ia2_api_all.idl',
-        '<(INTERMEDIATE_DIR)/ia2_api_all.h',
-        '<(INTERMEDIATE_DIR)/ia2_api_all_i.c',
-        '<(INTERMEDIATE_DIR)/ia2_api_all_p.c',
-      ],
-      'direct_dependent_settings': {
-        'include_dirs': [
-          # Bit of a hack to work around the built in vstudio rule.
-          '<(INTERMEDIATE_DIR)/../iaccessible2',
-        ],
-      },
-    },
-  ],
-}
-
-# Local Variables:
-# tab-width:2
-# indent-tabs-mode:nil
-# End:
-# vim: set expandtab tabstop=2 shiftwidth=2:
diff --git a/webkit/glue/webaccessibility.cc b/webkit/glue/webaccessibility.cc
index 33232ca..1af91d6 100644
--- a/webkit/glue/webaccessibility.cc
+++ b/webkit/glue/webaccessibility.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -7,11 +7,16 @@
 #include "third_party/WebKit/WebKit/chromium/public/WebAccessibilityCache.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebAccessibilityObject.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebAccessibilityRole.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebPoint.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebRect.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebString.h"
 
 using WebKit::WebAccessibilityCache;
 using WebKit::WebAccessibilityRole;
 using WebKit::WebAccessibilityObject;
+using WebKit::WebPoint;
+using WebKit::WebRect;
+using WebKit::WebString;
 
 namespace webkit_glue {
 
@@ -96,82 +101,240 @@ WebAccessibility::Role ConvertRole(WebKit::WebAccessibilityRole role) {
   }
 }
 
-uint32 ConvertState(const WebAccessibilityObject& o) {
-  uint32 state = 0;
+long ConvertState(const WebAccessibilityObject& o) {
+  long state = 0;
   if (o.isChecked())
-    state |= (1 << WebAccessibility::STATE_CHECKED);
+    state |= static_cast<long>(1 << WebAccessibility::STATE_CHECKED);
 
   if (o.canSetFocusAttribute())
-    state |= (1 << WebAccessibility::STATE_FOCUSABLE);
+    state |= static_cast<long>(1 << WebAccessibility::STATE_FOCUSABLE);
 
   if (o.isFocused())
-    state |= (1 << WebAccessibility::STATE_FOCUSED);
+    state |= static_cast<long>(1 << WebAccessibility::STATE_FOCUSED);
 
   if (o.isHovered())
-    state |= (1 << WebAccessibility::STATE_HOTTRACKED);
+    state |= static_cast<long>(1 << WebAccessibility::STATE_HOTTRACKED);
 
   if (o.isIndeterminate())
-    state |= (1 << WebAccessibility::STATE_INDETERMINATE);
+    state |= static_cast<long>(1 << WebAccessibility::STATE_INDETERMINATE);
 
   if (o.isAnchor())
-    state |= (1 << WebAccessibility::STATE_LINKED);
+    state |= static_cast<long>(1 << WebAccessibility::STATE_LINKED);
 
   if (o.isMultiSelectable())
-    state |= (1 << WebAccessibility::STATE_MULTISELECTABLE);
+    state |= static_cast<long>(1 << WebAccessibility::STATE_MULTISELECTABLE);
 
   if (o.isOffScreen())
-    state |= (1 << WebAccessibility::STATE_OFFSCREEN);
+    state |= static_cast<long>(1 << WebAccessibility::STATE_OFFSCREEN);
 
   if (o.isPressed())
-    state |= (1 << WebAccessibility::STATE_PRESSED);
+    state |= static_cast<long>(1 << WebAccessibility::STATE_PRESSED);
 
   if (o.isPasswordField())
-    state |= (1 << WebAccessibility::STATE_PROTECTED);
+    state |= static_cast<long>(1 << WebAccessibility::STATE_PROTECTED);
 
   if (o.isReadOnly())
-    state |= (1 << WebAccessibility::STATE_READONLY);
+    state |= static_cast<long>(1 << WebAccessibility::STATE_READONLY);
 
   if (o.isVisited())
-    state |= (1 << WebAccessibility::STATE_TRAVERSED);
+    state |= static_cast<long>(1 << WebAccessibility::STATE_TRAVERSED);
 
   if (!o.isEnabled())
-    state |= (1 << WebAccessibility::STATE_UNAVAILABLE);
+    state |= static_cast<long>(1 << WebAccessibility::STATE_UNAVAILABLE);
 
   return state;
 }
 
-WebAccessibility::WebAccessibility()
-    : id(-1),
-      role(ROLE_NONE),
-      state(-1) {
-}
+int32 WebAccessibility::GetAccObjInfo(WebAccessibilityCache* cache,
+  const WebAccessibility::InParams& in_params,
+  WebAccessibility::OutParams* out_params) {
+  // Find object requested by |object_id|.
+  WebAccessibilityObject active_acc_obj;
 
-WebAccessibility::WebAccessibility(const WebKit::WebAccessibilityObject& src,
-                                   WebKit::WebAccessibilityCache* cache) {
-  Init(src, cache);
-}
+  // Since ids assigned by Chrome starts at 1000, whereas platform-specific ids
+  // used to reference a child will be in a wholly different range, we know
+  // that any id that high should be treated as a non-direct descendant.
+  bool local_child = false;
+  if (cache->isValidId(in_params.child_id)) {
+    // Object is not a direct child, re-map the input parameters accordingly.
+    // The object to be retrieved is referred to by the |in_params.child_id|, as
+    // a result of e.g. a focus event.
+    active_acc_obj = cache->getObjectById(in_params.child_id);
+  } else {
+    local_child = true;
+
+    active_acc_obj = cache->getObjectById(in_params.object_id);
+    if (active_acc_obj.isNull())
+      return RETURNCODE_FAIL;
+
+    // child_id == 0 means self. Otherwise, it's a local child - 1.
+    if (in_params.child_id > 0) {
+      unsigned index = in_params.child_id - 1;
+      if (index >= active_acc_obj.childCount())
+        return RETURNCODE_FAIL;
+
+      active_acc_obj = active_acc_obj.childAt(index);
+    }
+  }
+
+  if (active_acc_obj.isNull())
+    return RETURNCODE_FAIL;
+
+  // Temp paramters for holding output information.
+  WebAccessibilityObject out_acc_obj;
+  string16 out_string;
 
-void WebAccessibility::Init(const WebKit::WebAccessibilityObject& src,
-                            WebKit::WebAccessibilityCache* cache) {
-  name = src.title();
-  value = src.stringValue();
-  action = src.actionVerb();
-  description = src.accessibilityDescription();
-  help = src.helpText();
-  shortcut = src.keyboardShortcut();
-  role = ConvertRole(src.roleValue());
-  state = ConvertState(src);
-  location = src.boundingBoxRect();
-
-  // Add the source object to the cache and store its id.
-  id = cache->addOrGetId(src);
-
-  // Recursively create children.
-  int child_count = src.childCount();
-  children.resize(child_count);
-  for (int i = 0; i < child_count; i++) {
-    children[i].Init(src.childAt(i), cache);
+  switch (in_params.function_id) {
+    case WebAccessibility::FUNCTION_DODEFAULTACTION: {
+      if (!active_acc_obj.performDefaultAction())
+        return RETURNCODE_FALSE;
+      break;
+    }
+    case WebAccessibility::FUNCTION_HITTEST: {
+      WebPoint point(in_params.input_long1, in_params.input_long2);
+      out_acc_obj = active_acc_obj.hitTest(point);
+      if (out_acc_obj.isNull())
+        return RETURNCODE_FALSE;
+      break;
+    }
+    case WebAccessibility::FUNCTION_LOCATION: {
+      WebRect rect = active_acc_obj.boundingBoxRect();
+      out_params->output_long1 = rect.x;
+      out_params->output_long2 = rect.y;
+      out_params->output_long3 = rect.width;
+      out_params->output_long4 = rect.height;
+      break;
+    }
+    case WebAccessibility::FUNCTION_NAVIGATE: {
+      WebAccessibility::Direction dir =
+        static_cast<WebAccessibility::Direction>(in_params.input_long1);
+      switch (dir) {
+        case WebAccessibility::DIRECTION_DOWN:
+        case WebAccessibility::DIRECTION_UP:
+        case WebAccessibility::DIRECTION_LEFT:
+        case WebAccessibility::DIRECTION_RIGHT:
+          // These directions are not implemented, matching Mozilla and IE.
+          return RETURNCODE_FALSE;
+        case WebAccessibility::DIRECTION_LASTCHILD:
+        case WebAccessibility::DIRECTION_FIRSTCHILD:
+          // MSDN states that navigating to first/last child can only be from
+          // self.
+          if (!local_child)
+            return RETURNCODE_FALSE;
+
+          if (dir == WebAccessibility::DIRECTION_FIRSTCHILD) {
+            out_acc_obj = active_acc_obj.firstChild();
+          } else {
+            out_acc_obj = active_acc_obj.lastChild();
+          }
+          break;
+        case WebAccessibility::DIRECTION_NEXT:
+        case WebAccessibility::DIRECTION_PREVIOUS: {
+          if (dir == WebAccessibility::DIRECTION_NEXT) {
+            out_acc_obj = active_acc_obj.nextSibling();
+          } else {
+            out_acc_obj = active_acc_obj.previousSibling();
+          }
+          break;
+        }
+        default:
+          return RETURNCODE_FALSE;
+      }
+
+      if (out_acc_obj.isNull())
+        return RETURNCODE_FALSE;
+
+      break;
+    }
+    case WebAccessibility::FUNCTION_GETCHILD: {
+      out_params->object_id = in_params.object_id;
+      out_acc_obj = active_acc_obj;
+      break;
+    }
+    case WebAccessibility::FUNCTION_CHILDCOUNT: {
+      out_params->output_long1 = active_acc_obj.childCount();
+      break;
+    }
+    case WebAccessibility::FUNCTION_DEFAULTACTION: {
+      out_string = active_acc_obj.actionVerb();
+      if (out_string.empty())
+        return RETURNCODE_FALSE;
+      break;
+    }
+    case WebAccessibility::FUNCTION_DESCRIPTION: {
+      out_string = active_acc_obj.accessibilityDescription();
+      if (out_string.empty())
+        return RETURNCODE_FALSE;
+      // From the Mozilla MSAA implementation:
+      // "Signal to screen readers that this description is speakable and is not
+      // a formatted positional information description. Don't localize the
+      // 'Description: ' part of this string, it will be parsed out by assistive
+      // technologies."
+      out_string = L"Description: " + out_string;
+      break;
+    }
+    case WebAccessibility::FUNCTION_GETFOCUSEDCHILD: {
+      out_acc_obj = active_acc_obj.focusedChild();
+      if (out_acc_obj.isNull())
+        return RETURNCODE_FALSE;
+      break;
+    }
+    case WebAccessibility::FUNCTION_HELPTEXT: {
+      out_string = active_acc_obj.helpText();
+      if (out_string.empty())
+        return RETURNCODE_FALSE;
+      break;
+    }
+    case WebAccessibility::FUNCTION_KEYBOARDSHORTCUT: {
+      out_string = active_acc_obj.keyboardShortcut();
+      if (out_string.empty())
+        return RETURNCODE_FALSE;
+      break;
+    }
+    case WebAccessibility::FUNCTION_NAME: {
+      out_string = active_acc_obj.title();
+      if (out_string.empty())
+        return RETURNCODE_FALSE;
+      break;
+    }
+    case WebAccessibility::FUNCTION_GETPARENT: {
+      out_acc_obj = active_acc_obj.parentObject();
+      if (out_acc_obj.isNull())
+        return RETURNCODE_FALSE;
+      break;
+    }
+    case WebAccessibility::FUNCTION_ROLE: {
+      out_params->output_long1 = ConvertRole(active_acc_obj.roleValue());
+      break;
+    }
+    case WebAccessibility::FUNCTION_STATE: {
+      out_params->output_long1 = ConvertState(active_acc_obj);
+      break;
+    }
+    case WebAccessibility::FUNCTION_VALUE: {
+      out_string = active_acc_obj.stringValue();
+      if (out_string.empty())
+        return RETURNCODE_FALSE;
+      break;
+    }
+    default:
+      // Non-supported function id.
+      return RETURNCODE_FAIL;
   }
+
+  // Output and hashmap assignments, as appropriate.
+  if (!out_string.empty())
+    out_params->output_string = out_string;
+
+  if (out_acc_obj.isNull())
+    return RETURNCODE_TRUE;
+
+  int id = cache->addOrGetId(out_acc_obj);
+  out_params->object_id = id;
+  out_params->output_long1 = -1;
+
+  // TODO(ctguil): Handle simple objects returned.
+  return RETURNCODE_TRUE;
 }
 
 }  // namespace webkit_glue
diff --git a/webkit/glue/webaccessibility.h b/webkit/glue/webaccessibility.h
index ea000e7..4bfd7743 100644
--- a/webkit/glue/webaccessibility.h
+++ b/webkit/glue/webaccessibility.h
@@ -1,16 +1,11 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WEBKIT_GLUE_WEBACCESSIBILITY_H_
 #define WEBKIT_GLUE_WEBACCESSIBILITY_H_
 
-#include <vector>
-
 #include "base/string16.h"
-#include "third_party/WebKit/WebKit/chromium/public/WebAccessibilityObject.h"
-#include "third_party/WebKit/WebKit/chromium/public/WebAccessibilityRole.h"
-#include "third_party/WebKit/WebKit/chromium/public/WebRect.h"
 
 namespace WebKit {
 class WebAccessibilityCache;
@@ -18,15 +13,62 @@ class WebAccessibilityCache;
 
 namespace webkit_glue {
 
-// A compact representation of the accessibility information for a
-// single web object, in a form that can be serialized and sent from
-// the renderer process to the browser process.
-struct WebAccessibility {
+class WebAccessibility {
  public:
-  // An alphabetical enumeration of accessibility roles.
-  enum Role {
-    ROLE_NONE = 0,
+  // This defines an enumeration of IDs that can uniquely identify a call to a
+  // specific accessibility information function. Should match the support
+  // implemented in WebKit and GlueAccessibilityObject (functions marked with
+  // return value E_NOTIMPL in WebKit are also excluded).
+  enum Function {
+    FUNCTION_NONE = 0,
+
+    // Supported accessibility information retrieval functions.
+    FUNCTION_DODEFAULTACTION,
+    FUNCTION_HITTEST,
+    FUNCTION_LOCATION,
+    FUNCTION_NAVIGATE,
+    FUNCTION_GETCHILD,
+    FUNCTION_CHILDCOUNT,
+    FUNCTION_DEFAULTACTION,
+    FUNCTION_DESCRIPTION,
+    FUNCTION_GETFOCUSEDCHILD,
+    FUNCTION_HELPTEXT,
+    FUNCTION_KEYBOARDSHORTCUT,
+    FUNCTION_NAME,
+    FUNCTION_GETPARENT,
+    FUNCTION_ROLE,
+    FUNCTION_STATE,
+    FUNCTION_VALUE
+
+    // The deprecated put_accName and put_accValue (IAccessible) are not
+    // supported here, nor is accSelect, get_accHelpTopic and get_accSelection
+    // (matching WebKit's support for IAccessible).
+  };
+
+  // This defines an enumeration of navigation directions based on (but
+  // independent of) the MSAA Navigation Constants. However, to avoid the use of
+  // COM in our Glue layer, we use this as a substitute with a one-to-one
+  // conversion between Browser side (has COM) and Glue.
+  enum Direction {
+    DIRECTION_NONE = 0,
 
+    // Valid directions.
+    DIRECTION_UP,
+    DIRECTION_DOWN,
+    DIRECTION_LEFT,
+    DIRECTION_RIGHT,
+    DIRECTION_NEXT,
+    DIRECTION_PREVIOUS,
+    DIRECTION_FIRSTCHILD,
+    DIRECTION_LASTCHILD
+  };
+
+  // This defines an enumeration (in alphabetical order) of the supported
+  // accessibility roles in our Glue layer (used in
+  // GlueAccessibilityObject::Role). Any interface using roles must provide a
+  // conversion to its own roles (see e.g. BrowserAccessibility::get_accRole and
+  // BrowserAccessibility::MSAARole).
+  enum Role {
     ROLE_APPLICATION,
     ROLE_CELL,
     ROLE_CHECKBUTTON,
@@ -57,14 +99,14 @@ struct WebAccessibility {
     ROLE_TABLE,
     ROLE_TEXT,
     ROLE_TOOLBAR,
-    ROLE_TOOLTIP,
-    NUM_ROLES
+    ROLE_TOOLTIP
   };
 
-  // An alphabetical enumeration of accessibility states.
-  // A state bitmask is formed by shifting 1 to the left by each state,
-  // for example:
-  //   int mask = (1 << STATE_CHECKED) | (1 << STATE_FOCUSED);
+  // This defines an enumeration (in alphabetical order) of the supported
+  // accessibility states in our Glue layer (used in
+  // GlueAccessibilityObject::State). Any interface using states must provide a
+  // conversion to its own states (see e.g. BrowserAccessibility::get_accState
+  // and BrowserAccessibility::MSAAState).
   enum State {
     STATE_CHECKED,
     STATE_FOCUSABLE,
@@ -81,32 +123,58 @@ struct WebAccessibility {
     STATE_UNAVAILABLE
   };
 
-  // Empty constructor, for serialization.
-  WebAccessibility();
-
-  // Construct from a WebAccessibilityObject. Recursively creates child
-  // nodes as needed to complete the tree. Adds |src| to |cache| and
-  // stores its cache ID.
-  WebAccessibility(const WebKit::WebAccessibilityObject& src,
-                   WebKit::WebAccessibilityCache* cache);
-
-  // Initialize an already-created struct, same as the constructor a
-  void Init(const WebKit::WebAccessibilityObject& src,
-            WebKit::WebAccessibilityCache* cache);
-
-  // This is a simple serializable struct. All member variables should be
-  // copyable.
-  int32 id;
-  string16 name;
-  string16 value;
-  string16 action;
-  string16 description;
-  string16 help;
-  string16 shortcut;
-  Role role;
-  uint32 state;
-  WebKit::WebRect location;
-  std::vector<WebAccessibility> children;
+  enum ReturnCode {
+    RETURNCODE_TRUE,    // MSAA S_OK
+    RETURNCODE_FALSE,   // MSAA S_FALSE
+    RETURNCODE_FAIL     // E_FAIL
+  };
+
+  // Parameters structure to hold a union of the possible accessibility function
+  // INPUT variables, with the unused fields always set to default value. Used
+  // in ViewMsg_GetAccessibilityInfo, as only parameter.
+  struct InParams {
+    // Identifier to uniquely distinguish which instance of accessibility
+    // information is being called upon on the renderer side.
+    int object_id;
+
+    // Identifier to resolve which accessibility information retrieval function
+    // is being called.
+    int function_id;
+
+    // Id of accessible child, whose information is being requested.
+    int child_id;
+
+    // LONG input parameters, used differently depending on the function called.
+    long input_long1;
+    long input_long2;
+  };
+
+  // Parameters structure to hold a union of the possible accessibility function
+  // OUTPUT variables, with the unused fields always set to default value. Used
+  // in ViewHostMsg_GetAccessibilityInfoResponse, as only parameter.
+  struct OutParams {
+    // Identifier to uniquely distinguish which instance of accessibility
+    // information is being called upon on the renderer side.
+    int object_id;
+
+    // LONG output parameters, used differently depending on the function
+    // called. [output_long1] can in some cases be set to -1 to indicate that
+    // the child object found by the called IAccessible function is not a simple
+    // object.
+    long output_long1;
+    long output_long2;
+    long output_long3;
+    long output_long4;
+
+    // String output parameter.
+    string16 output_string;
+
+    // Return code of the accessibility function call.
+    int32 return_code;
+  };
+
+  static int32 GetAccObjInfo(WebKit::WebAccessibilityCache* cache,
+      const InParams& in_params, OutParams* out_params);
 };
 
 }  // namespace webkit_glue
diff --git a/webkit/glue/webaccessibilitymanager.h b/webkit/glue/webaccessibilitymanager.h
new file mode 100644
index 0000000..2debcb7
--- /dev/null
+++ b/webkit/glue/webaccessibilitymanager.h
@@ -0,0 +1,62 @@
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef WEBKIT_GLUE_WEBACCESSIBILITYMANAGER_H_
+#define WEBKIT_GLUE_WEBACCESSIBILITYMANAGER_H_
+
+#include "webkit/glue/webaccessibility.h"
+
+namespace WebKit {
+class WebAccessibilityObject;
+class WebView;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// WebAccessibilityManager
+//
+// Responds to incoming accessibility requests from the browser side. Retrieves
+// the requested information from the active AccessibilityObject, through the
+// GlueAccessibilityObject.
+////////////////////////////////////////////////////////////////////////////////
+namespace webkit_glue {
+
+class WebAccessibilityManager {
+ public:
+  WebAccessibilityManager() {}
+  virtual ~WebAccessibilityManager() {}
+
+  // Creates a new instance of WebAccessibilityManager.
+  static WebAccessibilityManager* Create();
+
+  // Retrieves the accessibility information as requested in in_params, by
+  // calling into WebKit's AccessibilityObject. Maintains a hashmap of the
+  // currently active (browser side ref-count non-zero) instances. Returns true
+  // if successful, false otherwise.
+  virtual bool GetAccObjInfo(WebKit::WebView* view,
+      const WebAccessibility::InParams& in_params,
+      WebAccessibility::OutParams* out_params) = 0;
+
+  // Erases the entry identified by the [acc_obj_id] from the hash maps. If
+  // [clear_all] is true, all entries are erased. Returns true if successful,
+  // false otherwise.
+  virtual bool ClearAccObjMap(int acc_obj_id, bool clear_all) = 0;
+
+  // Retrieves the id of the input AccessibilityObject, due to a focus event.
+  // Returns an id greater than or equal to 0 if successful, -1 otherwise.
+  virtual int FocusAccObj(const WebKit::WebAccessibilityObject& object) = 0;
+
+ private:
+  // Retrieves the RenderObject associated with this WebView, and uses it to
+  // initialize the root of the GlueAccessibilityObject tree with the
+  // associated accessibility information. Returns true if successful, false
+  // otherwise.
+  virtual bool InitAccObjRoot(WebKit::WebView* view) = 0;
+
+  DISALLOW_COPY_AND_ASSIGN(WebAccessibilityManager);
+};
+
+}  // namespace webkit_glue
+
+#endif  // WEBKIT_GLUE_WEBACCESSIBILITYMANAGER_H_
diff --git a/webkit/glue/webkit_glue.gypi b/webkit/glue/webkit_glue.gypi
index aec0904..e6b3a35 100644
--- a/webkit/glue/webkit_glue.gypi
+++ b/webkit/glue/webkit_glue.gypi
@@ -332,6 +332,10 @@
         ['OS!="win"', {
           'sources/': [['exclude', '_win\\.cc$']],
           'sources!': [
+            # These files are Windows-only now but may be ported to other
+            # platforms.
+            'webaccessibility.cc',
+            'webaccessibility.h',
             'webthemeengine_impl_win.cc',
           ],
         }, {  # else: OS=="win"