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-rw-r--r--chrome/browser/accessibility/browser_accessibility_manager.cc266
1 files changed, 5 insertions, 261 deletions
diff --git a/chrome/browser/accessibility/browser_accessibility_manager.cc b/chrome/browser/accessibility/browser_accessibility_manager.cc
index 8506e7a..256c62c 100644
--- a/chrome/browser/accessibility/browser_accessibility_manager.cc
+++ b/chrome/browser/accessibility/browser_accessibility_manager.cc
@@ -4,74 +4,17 @@
#include "chrome/browser/accessibility/browser_accessibility_manager.h"
-#include "chrome/browser/accessibility/browser_accessibility.h"
+#include "chrome/common/render_messages_params.h"
using webkit_glue::WebAccessibility;
-// 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.
-// static
-int32 BrowserAccessibilityManager::next_child_id_ = -1;
-
-BrowserAccessibility* BrowserAccessibilityFactory::Create() {
- return BrowserAccessibility::Create();
-}
BrowserAccessibilityManager::BrowserAccessibilityManager(
- gfx::NativeView parent_view,
- const WebAccessibility& src,
- BrowserAccessibilityDelegate* delegate,
- BrowserAccessibilityFactory* factory)
- : parent_view_(parent_view),
- delegate_(delegate),
- factory_(factory),
- focus_(NULL) {
- root_ = CreateAccessibilityTree(NULL, GetNextChildID(), src, 0);
- if (!focus_)
- focus_ = root_;
-}
-
-// static
-int32 BrowserAccessibilityManager::GetNextChildID() {
- // 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.
- next_child_id_--;
- if (next_child_id_ == -2000000000)
- next_child_id_ = -1;
-
- return next_child_id_;
+ gfx::NativeWindow parent_window)
+ : parent_window_(parent_window) {
}
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_->ReleaseTree();
- root_->ReleaseReference();
-}
-
-BrowserAccessibility* BrowserAccessibilityManager::GetRoot() {
- return root_;
-}
-
-BrowserAccessibility* BrowserAccessibilityManager::GetFromChildID(
- int32 child_id) {
- base::hash_map<int32, BrowserAccessibility*>::iterator iter =
- child_id_map_.find(child_id);
- if (iter != child_id_map_.end()) {
- return iter->second;
- } else {
- return NULL;
- }
-}
-
-void BrowserAccessibilityManager::Remove(int32 child_id) {
- child_id_map_.erase(child_id);
}
void BrowserAccessibilityManager::OnAccessibilityNotifications(
@@ -111,205 +54,6 @@ void BrowserAccessibilityManager::OnAccessibilityNotifications(
}
}
-void BrowserAccessibilityManager::OnAccessibilityObjectStateChange(
- const WebAccessibility& acc_obj) {
- BrowserAccessibility* new_browser_acc = UpdateTree(acc_obj);
- if (!new_browser_acc)
- return;
-
- NotifyAccessibilityEvent(
- ViewHostMsg_AccessibilityNotification_Params::
- NOTIFICATION_TYPE_CHECK_STATE_CHANGED,
- new_browser_acc);
-}
-
-void BrowserAccessibilityManager::OnAccessibilityObjectChildrenChange(
- const WebAccessibility& acc_obj) {
- BrowserAccessibility* new_browser_acc = UpdateTree(acc_obj);
- if (!new_browser_acc)
- return;
-
- NotifyAccessibilityEvent(
- ViewHostMsg_AccessibilityNotification_Params::
- NOTIFICATION_TYPE_CHILDREN_CHANGED,
- new_browser_acc);
-}
-
-void BrowserAccessibilityManager::OnAccessibilityObjectFocusChange(
- const WebAccessibility& acc_obj) {
- BrowserAccessibility* new_browser_acc = UpdateTree(acc_obj);
- if (!new_browser_acc)
- return;
-
- focus_ = new_browser_acc;
- if (delegate_ && delegate_->HasFocus())
- GotFocus();
-}
-
-void BrowserAccessibilityManager::OnAccessibilityObjectLoadComplete(
- const WebAccessibility& acc_obj) {
- root_->ReleaseTree();
- root_->ReleaseReference();
- focus_ = NULL;
-
- root_ = CreateAccessibilityTree(NULL, GetNextChildID(), acc_obj, 0);
- if (!focus_)
- focus_ = root_;
-
- NotifyAccessibilityEvent(
- ViewHostMsg_AccessibilityNotification_Params::
- NOTIFICATION_TYPE_LOAD_COMPLETE,
- root_);
- if (delegate_ && delegate_->HasFocus())
- GotFocus();
-}
-
-void BrowserAccessibilityManager::OnAccessibilityObjectValueChange(
- const WebAccessibility& acc_obj) {
- BrowserAccessibility* new_browser_acc = UpdateTree(acc_obj);
- if (!new_browser_acc)
- return;
-
- NotifyAccessibilityEvent(
- ViewHostMsg_AccessibilityNotification_Params::
- NOTIFICATION_TYPE_VALUE_CHANGED,
- root_);
-}
-
-void BrowserAccessibilityManager::OnAccessibilityObjectTextChange(
- const WebAccessibility& acc_obj) {
- BrowserAccessibility* new_browser_acc = UpdateTree(acc_obj);
- if (!new_browser_acc)
- return;
-
- NotifyAccessibilityEvent(
- ViewHostMsg_AccessibilityNotification_Params::
- NOTIFICATION_TYPE_SELECTED_TEXT_CHANGED,
- root_);
-}
-
-void BrowserAccessibilityManager::GotFocus() {
- // TODO(ctguil): Remove when tree update logic handles focus changes.
- if (!focus_)
- return;
-
- NotifyAccessibilityEvent(
- ViewHostMsg_AccessibilityNotification_Params::
- NOTIFICATION_TYPE_FOCUS_CHANGED,
- focus_);
-}
-
-gfx::NativeView BrowserAccessibilityManager::GetParentView() {
- return parent_view_;
-}
-
-BrowserAccessibility* BrowserAccessibilityManager::GetFocus(
- BrowserAccessibility* root) {
- if (focus_ && (!root || focus_->IsDescendantOf(root)))
- return focus_;
-
- return NULL;
-}
-
-void BrowserAccessibilityManager::SetFocus(
- const BrowserAccessibility& node) {
- if (delegate_)
- delegate_->SetAccessibilityFocus(node.renderer_id());
-}
-
-void BrowserAccessibilityManager::DoDefaultAction(
- const BrowserAccessibility& node) {
- if (delegate_)
- delegate_->AccessibilityDoDefaultAction(node.renderer_id());
-}
-
-bool BrowserAccessibilityManager::CanModifyTreeInPlace(
- BrowserAccessibility* current_root,
- const WebAccessibility& new_root) {
- if (current_root->renderer_id() != new_root.id)
- return false;
- if (current_root->GetChildCount() != new_root.children.size())
- return false;
- for (unsigned int i = 0; i < current_root->GetChildCount(); i++) {
- if (!CanModifyTreeInPlace(current_root->GetChild(i),
- new_root.children[i])) {
- return false;
- }
- }
- return true;
-}
-
-void BrowserAccessibilityManager::ModifyTreeInPlace(
- BrowserAccessibility* current_root,
- const WebAccessibility& new_root) {
- DCHECK_EQ(current_root->renderer_id(), new_root.id);
- DCHECK_EQ(current_root->GetChildCount(), new_root.children.size());
- for (unsigned int i = 0; i < current_root->GetChildCount(); i++)
- ModifyTreeInPlace(current_root->GetChild(i), new_root.children[i]);
- current_root->Initialize(
- this,
- current_root->GetParent(),
- current_root->child_id(),
- current_root->index_in_parent(),
- new_root);
-}
-
-
-BrowserAccessibility* BrowserAccessibilityManager::UpdateTree(
- const WebAccessibility& acc_obj) {
- base::hash_map<int, int32>::iterator iter =
- renderer_id_to_child_id_map_.find(acc_obj.id);
- if (iter == renderer_id_to_child_id_map_.end())
- return NULL;
-
- int32 child_id = iter->second;
- BrowserAccessibility* old_browser_acc = GetFromChildID(child_id);
- if (!old_browser_acc)
- return NULL;
-
- if (CanModifyTreeInPlace(old_browser_acc, acc_obj)) {
- ModifyTreeInPlace(old_browser_acc, acc_obj);
- return old_browser_acc;
- }
-
- BrowserAccessibility* new_browser_acc = CreateAccessibilityTree(
- old_browser_acc->GetParent(),
- child_id,
- acc_obj,
- old_browser_acc->index_in_parent());
-
- if (old_browser_acc->GetParent()) {
- old_browser_acc->GetParent()->ReplaceChild(
- old_browser_acc,
- new_browser_acc);
- } else {
- DCHECK_EQ(old_browser_acc, root_);
- root_ = new_browser_acc;
- }
- old_browser_acc->ReleaseTree();
- old_browser_acc->ReleaseReference();
- child_id_map_[child_id] = new_browser_acc;
-
- return new_browser_acc;
-}
-
-BrowserAccessibility* BrowserAccessibilityManager::CreateAccessibilityTree(
- BrowserAccessibility* parent,
- int child_id,
- const WebAccessibility& src,
- int index_in_parent) {
- BrowserAccessibility* instance = factory_->Create();
-
- 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, GetNextChildID(), src.children[i], i);
- instance->AddChild(child);
- }
-
- return instance;
+gfx::NativeWindow BrowserAccessibilityManager::GetParentWindow() {
+ return parent_window_;
}