Move src/chrome/views to src/views. RS=darin http://crbug.com/11387

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15604 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 144 insertions, 0 deletions

diff --git a/views/accessibility/view_accessibility.h b/views/accessibility/view_accessibility.h
new file mode 100644
index 0000000..840a685
--- /dev/null
+++ b/views/accessibility/view_accessibility.h
@@ -0,0 +1,144 @@
+// 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 VIEWS_ACCESSIBILITY_VIEW_ACCESSIBILITY_H_
+#define VIEWS_ACCESSIBILITY_VIEW_ACCESSIBILITY_H_
+
+#include <atlbase.h>
+#include <atlcom.h>
+
+#include <oleacc.h>
+
+#include "views/view.h"
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// ViewAccessibility
+//
+// Class implementing the MSAA IAccessible COM interface for a generic View,
+// providing accessibility to be used by screen readers and other assistive
+// technology (AT).
+//
+////////////////////////////////////////////////////////////////////////////////
+class ATL_NO_VTABLE ViewAccessibility
+  : public CComObjectRootEx<CComMultiThreadModel>,
+    public IDispatchImpl<IAccessible, &IID_IAccessible, &LIBID_Accessibility> {
+ public:
+  BEGIN_COM_MAP(ViewAccessibility)
+    COM_INTERFACE_ENTRY2(IDispatch, IAccessible)
+    COM_INTERFACE_ENTRY(IAccessible)
+  END_COM_MAP()
+
+  ViewAccessibility() {}
+  ~ViewAccessibility() {}
+
+  HRESULT Initialize(views::View* view);
+
+  // Supported IAccessible methods.
+
+  // Retrieves the child element or child object at a given point on the screen.
+  STDMETHODIMP accHitTest(LONG x_left, LONG y_top, VARIANT* child);
+
+  // Retrieves the specified object's current screen location.
+  STDMETHODIMP accLocation(LONG* x_left,
+                           LONG* y_top,
+                           LONG* width,
+                           LONG* height,
+                           VARIANT var_id);
+
+  // Traverses to another UI element and retrieves the object.
+  STDMETHODIMP accNavigate(LONG nav_dir, VARIANT start, VARIANT* end);
+
+  // Retrieves an IDispatch interface pointer for the specified child.
+  STDMETHODIMP get_accChild(VARIANT var_child, IDispatch** disp_child);
+
+  // Retrieves the number of accessible children.
+  STDMETHODIMP get_accChildCount(LONG* child_count);
+
+  // Retrieves a string that describes the object's default action.
+  STDMETHODIMP get_accDefaultAction(VARIANT var_id, BSTR* default_action);
+
+  // Retrieves the tooltip description.
+  STDMETHODIMP get_accDescription(VARIANT var_id, BSTR* desc);
+
+  // Retrieves the object that has the keyboard focus.
+  STDMETHODIMP get_accFocus(VARIANT* focus_child);
+
+  // Retrieves the specified object's shortcut.
+  STDMETHODIMP get_accKeyboardShortcut(VARIANT var_id, BSTR* access_key);
+
+  // Retrieves the name of the specified object.
+  STDMETHODIMP get_accName(VARIANT var_id, BSTR* name);
+
+  // Retrieves the IDispatch interface of the object's parent.
+  STDMETHODIMP get_accParent(IDispatch** disp_parent);
+
+  // Retrieves information describing the role of the specified object.
+  STDMETHODIMP get_accRole(VARIANT var_id, VARIANT* role);
+
+  // Retrieves the current state of the specified object.
+  STDMETHODIMP get_accState(VARIANT var_id, VARIANT* state);
+
+  // Non-supported IAccessible methods.
+
+  // Out-dated and can be safely said to be very rarely used.
+  STDMETHODIMP accDoDefaultAction(VARIANT var_id);
+
+  // No value associated with views.
+  STDMETHODIMP get_accValue(VARIANT var_id, BSTR* value);
+
+  // Selections not applicable to views.
+  STDMETHODIMP get_accSelection(VARIANT* selected);
+  STDMETHODIMP accSelect(LONG flags_sel, VARIANT var_id);
+
+  // Help functions not supported.
+  STDMETHODIMP get_accHelp(VARIANT var_id, BSTR* help);
+  STDMETHODIMP get_accHelpTopic(BSTR* help_file,
+                                VARIANT var_id,
+                                LONG* topic_id);
+
+  // Deprecated functions, not implemented here.
+  STDMETHODIMP put_accName(VARIANT var_id, BSTR put_name);
+  STDMETHODIMP put_accValue(VARIANT var_id, BSTR put_val);
+
+ private:
+  // Checks to see if child_id is within the child bounds of view. Returns true
+  // if the child is within the bounds, false otherwise.
+  bool IsValidChild(int child_id, views::View* view) const;
+
+  // Determines navigation direction for accNavigate, based on left, up and
+  // previous being mapped all to previous and right, down, next being mapped
+  // to next. Returns true if navigation direction is next, false otherwise.
+  bool IsNavDirNext(int nav_dir) const;
+
+  // Determines if the navigation target is within the allowed bounds. Returns
+  // true if it is, false otherwise.
+  bool IsValidNav(int nav_dir,
+                  int start_id,
+                  int lower_bound,
+                  int upper_bound) const;
+
+  // Wrapper to retrieve the view's instance of IAccessible.
+  ViewAccessibilityWrapper* GetViewAccessibilityWrapper(views::View* v) const {
+    return v->GetViewAccessibilityWrapper();
+  }
+
+  // Helper function which sets applicable states of view.
+  void SetState(VARIANT* msaa_state, views::View* view);
+
+  // Returns a conversion from the Role (as defined in
+  // chrome/common/accessibility_types.h) to an MSAA role.
+  long MSAARole(AccessibilityTypes::Role role);
+
+  // Returns a conversion from the State (as defined in
+  // chrome/common/accessibility_types.h) to MSAA states set.
+  long MSAAState(AccessibilityTypes::State state);
+
+  // Member View needed for view-specific calls.
+  views::View* view_;
+
+  DISALLOW_EVIL_CONSTRUCTORS(ViewAccessibility);
+};
+
+#endif  // VIEWS_ACCESSIBILITY_VIEW_ACCESSIBILITY_H_