Implement initial support for nesting one ax tree in another.

content/browser/accessibility/browser_accessibility_manager.cc

 // Copyright (c) 2012 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 "content/browser/accessibility/browser_accessibility_manager.h"
 
 #include "base/logging.h"
 #include "content/browser/accessibility/browser_accessibility.h"
+#include "content/browser/accessibility/frame_tree_accessibility.h"
 #include "content/common/accessibility_messages.h"
 
 namespace content {
 
 ui::AXTreeUpdate MakeAXTreeUpdate(
     const ui::AXNodeData& node1,
     const ui::AXNodeData& node2 /* = ui::AXNodeData() */,
     const ui::AXNodeData& node3 /* = ui::AXNodeData() */,
     const ui::AXNodeData& node4 /* = ui::AXNodeData() */,
     const ui::AXNodeData& node5 /* = ui::AXNodeData() */,
@@ skipping 43 matching lines @@
 }
 #endif
 
 BrowserAccessibilityManager::BrowserAccessibilityManager(
     BrowserAccessibilityDelegate* delegate,
     BrowserAccessibilityFactory* factory)
     : delegate_(delegate),
       factory_(factory),
       tree_(new ui::AXTree()),
       focus_(NULL),
+      parent_frame_frame_id_(kNoFrameId),
+      parent_frame_node_id_(0),
       osk_state_(OSK_ALLOWED) {
   tree_->SetDelegate(this);
 }
 
 BrowserAccessibilityManager::BrowserAccessibilityManager(
     const ui::AXTreeUpdate& initial_tree,
     BrowserAccessibilityDelegate* delegate,
     BrowserAccessibilityFactory* factory)
     : delegate_(delegate),
       factory_(factory),
@@ skipping 255 matching lines @@
 }
 
 void BrowserAccessibilityManager::OnNodeCreationFinished(ui::AXNode* node) {
   GetFromAXNode(node)->OnUpdateFinished();
 }
 
 void BrowserAccessibilityManager::OnNodeChangeFinished(ui::AXNode* node) {
   GetFromAXNode(node)->OnUpdateFinished();
 }
 
+void BrowserAccessibilityManager::SetParentFrameIds(
+    uint32 parent_frame_frame_id, uint32 parent_frame_node_id) {
+  parent_frame_frame_id_ = parent_frame_frame_id;
+  parent_frame_node_id_ = parent_frame_node_id;
+}
+
+BrowserAccessibility* BrowserAccessibilityManager::GetCrossFrameParent() {
+  FrameTreeAccessibility* frames = FrameTreeAccessibility::GetInstance();
+  BrowserAccessibilityManager* parent_manager =
+      frames->FindAccessibilityManagerById(parent_frame_frame_id_);
+  if (!parent_manager)
+    return NULL;
+  return parent_manager->GetFromID(parent_frame_node_id_);
+}
+
 }  // namespace content