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

ui/views/accessibility/ax_aura_obj_cache.cc

Index: ui/views/accessibility/ax_aura_obj_cache.cc
diff --git a/ui/views/accessibility/ax_aura_obj_cache.cc b/ui/views/accessibility/ax_aura_obj_cache.cc
new file mode 100644
index 0000000000000000000000000000000000000000..84d24544707a3434959cd66b22c7b3fb5de679eb
--- /dev/null
+++ b/ui/views/accessibility/ax_aura_obj_cache.cc
@@ -0,0 +1,167 @@
+// 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_aura_obj_cache.h"
+
+#include "base/memory/singleton.h"
+#include "ui/aura/window.h"
+#include "ui/views/accessibility/ax_aura_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
+AXAuraObjCache* AXAuraObjCache::GetInstance() {
+  return Singleton<AXAuraObjCache>::get();
+}
+
+AXAuraObjWrapper* AXAuraObjCache::GetOrCreate(View* view) {
+  if (!view)
+    return NULL;
+
+  std::map<View*, int32>::iterator it =

[aboxhall, 2014/04/28 19:50:38]

Nit: combine with below into one line.

[David Tseng, 2014/04/29 01:35:03]

Done.

+      view_to_id_map_.find(view);
+
+  if (it != view_to_id_map_.end())
+    return Get(it->second);
+
+  AXAuraObjWrapper* wrapper = new AXViewObjWrapper(view);
+  view_to_id_map_[view] = current_id_;
+  cache_[current_id_] = wrapper;
+  current_id_++;
+  return wrapper;
+}
+
+AXAuraObjWrapper* AXAuraObjCache::GetOrCreate(Widget* widget) {
+  if (!widget)
+    return NULL;
+
+  std::map<Widget*, int32>::iterator it =
+      widget_to_id_map_.find(widget);
+
+  if (it != widget_to_id_map_.end())
+    return Get(it->second);
+
+  AXAuraObjWrapper* wrapper = new AXWidgetObjWrapper(widget);
+  widget_to_id_map_[widget] = current_id_;

[aboxhall, 2014/04/28 19:50:38]

Perhaps this pattern (AuraObjWrapper* wrapper = new AXFooObjWrapper(foo);
foo_to_id_map_[foo] = current_id; cache[current_id_] = wrapper; current_id++;),
or some part of it, should be a method, given it's used in a few places? Up to
you.

[David Tseng, 2014/04/29 01:35:03]

Made these into templates.

+  cache_[current_id_] = wrapper;
+  current_id_++;
+  return wrapper;
+}
+
+AXAuraObjWrapper* AXAuraObjCache::GetOrCreate(aura::Window* window) {
+  if (!window)
+    return NULL;
+
+  std::map<aura::Window*, int32>::iterator it =
+      window_to_id_map_.find(window);
+
+  if (it != window_to_id_map_.end())
+    return Get(it->second);
+
+  AXAuraObjWrapper* wrapper = new AXWindowObjWrapper(window);
+  window_to_id_map_[window] = current_id_;
+  cache_[current_id_] = wrapper;
+  current_id_++;
+  return wrapper;
+}
+
+int32 AXAuraObjCache::GetID(View* view) {
+  if (!view)
+    return -1;
+
+  std::map<View*, int32>::iterator it =
+      view_to_id_map_.find(view);
+
+  if (it != view_to_id_map_.end())
+    return it->second;
+
+  return -1;
+}
+
+int32 AXAuraObjCache::GetID(Widget* widget) {
+  if (!widget)
+    return -1;
+
+  std::map<Widget*, int32>::iterator it =
+      widget_to_id_map_.find(widget);
+
+  if (it != widget_to_id_map_.end())
+    return it->second;
+
+  return -1;
+}
+
+int32 AXAuraObjCache::GetID(aura::Window* window) {
+  if (!window)
+    return -1;
+
+  std::map<aura::Window*, int32>::iterator it =
+      window_to_id_map_.find(window);
+
+  if (it != window_to_id_map_.end())
+    return it->second;
+
+  return -1;
+}
+
+void AXAuraObjCache::Remove(View* view) {
+  int32 id = GetID(view);
+
+  if (id == -1)
+    return;
+
+  view_to_id_map_.erase(view);
+  Remove(id);
+}
+
+void AXAuraObjCache::Remove(Widget* widget) {
+  int32 id = GetID(widget);
+
+  if (id == -1)
+    return;
+
+  widget_to_id_map_.erase(widget);
+  Remove(id);
+}
+
+void AXAuraObjCache::Remove(aura::Window* window) {
+  int32 id = GetID(window);
+
+  if (id == -1)
+    return;
+
+  window_to_id_map_.erase(window);
+  Remove(id);
+}
+
+AXAuraObjWrapper* AXAuraObjCache::Get(int32 id) {
+  std::map<int32, AXAuraObjWrapper*>::iterator it = cache_.find(id);
+
+  if (it == cache_.end())
+    return NULL;
+
+  return it->second;
+}
+
+void AXAuraObjCache::Remove(int32 id) {
+  AXAuraObjWrapper* obj = Get(id);
+
+  if (id == -1 || !obj)
+    return;
+
+  cache_.erase(id);
+  delete obj;
+}
+
+AXAuraObjCache::AXAuraObjCache() : current_id_(1) {
+}
+
+AXAuraObjCache::~AXAuraObjCache() {}
+
+}  // namespace views