Make BrowserAccessibilityManager cross platform. Step 2.

chrome/browser/accessibility/browser_accessibility.cc

 // 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 "chrome/browser/accessibility/browser_accessibility.h"
 
+#include "base/logging.h"
+#include "chrome/browser/accessibility/browser_accessibility_manager.h"
+
 BrowserAccessibility::BrowserAccessibility() {
 }
 
 BrowserAccessibility::~BrowserAccessibility() {
 }
+
+void BrowserAccessibility::Initialize(
+    BrowserAccessibilityManager* manager,
+    BrowserAccessibility* parent,
+    int32 child_id,
+    int32 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;
+  attributes_ = src.attributes;
+  html_attributes_ = src.html_attributes;
+  location_ = src.location;
+  role_ = src.role;
+  state_ = src.state;
+
+  Initialize();
+}
+
+void BrowserAccessibility::ReleaseTree() {
+  // 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)->ReleaseTree();
+    (*iter)->ReleaseReference();
+  }
+  children_.clear();
+  manager_->Remove(child_id_);
+}
+
+void BrowserAccessibility::AddChild(BrowserAccessibility* child) {
+  children_.push_back(child);
+}
+
+bool BrowserAccessibility::IsDescendantOf(
+    BrowserAccessibility* ancestor) {
+  if (this == ancestor) {
+    return true;
+  } else if (parent_) {
+    return parent_->IsDescendantOf(ancestor);
+  }
+
+  return false;
+}
+
+BrowserAccessibility* BrowserAccessibility::GetParent() {
+  return parent_;
+}
+
+uint32 BrowserAccessibility::GetChildCount() {
+  return children_.size();
+}
+
+BrowserAccessibility* BrowserAccessibility::GetChild(uint32 child_index) {
+  DCHECK(child_index < children_.size());
+  return children_[child_index];
+}
+
+BrowserAccessibility* BrowserAccessibility::GetPreviousSibling() {
+  if (parent_ && index_in_parent_ > 0)
+    return parent_->children_[index_in_parent_ - 1];
+
+  return NULL;
+}
+
+BrowserAccessibility* BrowserAccessibility::GetNextSibling() {
+  if (parent_ &&
+      index_in_parent_ >= 0 &&
+      index_in_parent_ < static_cast<int>(parent_->children_.size() - 1)) {
+    return parent_->children_[index_in_parent_ + 1];
+  }
+
+  return NULL;
+}
+
+void BrowserAccessibility::ReplaceChild(
+    const BrowserAccessibility* old_acc, BrowserAccessibility* new_acc) {
+  DCHECK_EQ(children_[old_acc->index_in_parent_], old_acc);
+
+  old_acc = children_[old_acc->index_in_parent_];
+  children_[old_acc->index_in_parent_] = new_acc;
+}