Extend AXTreeSourceViews to handle aura::Window and views::Widget.

ui/views/accessibility/ax_obj_cache.cc

+// Copyright 2014 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 "ui/views/accessibility/ax_obj_cache.h"
+
+#include "base/memory/singleton.h"
+#include "ui/aura/window.h"
+#include "ui/views/accessibility/ax_node_source_obj_wrapper.h"
+#include "ui/views/accessibility/ax_view_obj_wrapper.h"
+#include "ui/views/accessibility/ax_widget_obj_wrapper.h"
+#include "ui/views/accessibility/ax_window_obj_wrapper.h"
+#include "ui/views/view.h"
+#include "ui/views/widget/widget.h"
+
+namespace views {
+
+// static
+AXObjCache* AXObjCache::GetInstance() {
+  return Singleton<AXObjCache>::get();
+}
+
+AXNodeSourceObjWrapper* AXObjCache::GetOrCreate(View* view) {

[dmazzoni, 2014/04/23 05:06:44]

I'm assuming these functions will register observers that listen for
destruction? Or should each wrapper do it?

[David Tseng, 2014/04/23 18:20:01]

The widgets and windows will observe for destruction. Added.

+  if (!view)
+    return NULL;
+
+  std::map<View*, uint32>::iterator it =
+      view_to_id_map_.find(view);
+
+  if (it != view_to_id_map_.end())
+    return Get(it->second);
+
+  AXNodeSourceObjWrapper* wrapper = new AXViewObjWrapper(view);
+  view_to_id_map_[view] = current_id_;
+  cache_[current_id_] = wrapper;
+  current_id_++;
+  return wrapper;
+}
+
+AXNodeSourceObjWrapper* AXObjCache::GetOrCreate(Widget* widget) {
+  if (!widget)
+    return NULL;
+
+  std::map<Widget*, uint32>::iterator it =
+      widget_to_id_map_.find(widget);
+
+  if (it != widget_to_id_map_.end())
+    return Get(it->second);
+
+  AXNodeSourceObjWrapper* wrapper = new AXWidgetObjWrapper(widget);
+  widget_to_id_map_[widget] = current_id_;
+  cache_[current_id_] = wrapper;
+  current_id_++;
+  return wrapper;
+}
+
+AXNodeSourceObjWrapper* AXObjCache::GetOrCreate(aura::Window* window) {
+  if (!window)
+    return NULL;
+
+  std::map<aura::Window*, uint32>::iterator it =
+      window_to_id_map_.find(window);
+
+  if (it != window_to_id_map_.end())
+    return Get(it->second);
+
+  AXNodeSourceObjWrapper* wrapper = new AXWindowObjWrapper(window);
+  window_to_id_map_[window] = current_id_;
+  cache_[current_id_] = wrapper;
+  current_id_++;
+  return wrapper;
+}
+
+uint32 AXObjCache::GetID(View* view) {
+  if (!view)
+    return -1;
+
+  std::map<View*, uint32>::iterator it =
+      view_to_id_map_.find(view);
+
+  if (it != view_to_id_map_.end())
+    return it->second;
+
+  return -1;
+}
+
+uint32 AXObjCache::GetID(Widget* widget) {
+  if (!widget)
+    return -1;
+
+  std::map<Widget*, uint32>::iterator it =
+      widget_to_id_map_.find(widget);
+
+  if (it != widget_to_id_map_.end())
+    return it->second;
+
+  return -1;
+}
+
+uint32 AXObjCache::GetID(aura::Window* window) {
+  if (!window)
+    return -1;
+
+  std::map<aura::Window*, uint32>::iterator it =
+      window_to_id_map_.find(window);
+
+  if (it != window_to_id_map_.end())
+    return it->second;
+
+  return -1;
+}
+
+AXNodeSourceObjWrapper* AXObjCache::Get(uint32 id) {
+  std::map<uint32, AXNodeSourceObjWrapper*>::iterator it = cache_.find(id);
+
+  if (it == cache_.end())
+    return NULL;
+
+  return it->second;
+}
+
+}  // namespace views