| // 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 "chrome/browser/accessibility/ax_tree_id_registry.h" |
| |
| #include "base/memory/singleton.h" |
| |
| // static |
| AXTreeIDRegistry* AXTreeIDRegistry::GetInstance() { |
| return Singleton<AXTreeIDRegistry>::get(); |
| } |
| |
| int AXTreeIDRegistry::GetOrCreateAXTreeID(int process_id, int routing_id) { |
| FrameID frame_id(process_id, routing_id); |
| std::map<FrameID, AXTreeID>::iterator it; |
| it = frame_to_ax_tree_id_map_.find(frame_id); |
| if (it != frame_to_ax_tree_id_map_.end()) |
| return it->second; |
| |
| int new_id = ++ax_tree_id_counter_; |
| frame_to_ax_tree_id_map_[frame_id] = new_id; |
| ax_tree_to_frame_id_map_[new_id] = frame_id; |
| |
| return new_id; |
| } |
| |
| AXTreeIDRegistry::FrameID AXTreeIDRegistry::GetFrameID(int ax_tree_id) { |
| std::map<AXTreeID, FrameID>::iterator it; |
| it = ax_tree_to_frame_id_map_.find(ax_tree_id); |
| if (it != ax_tree_to_frame_id_map_.end()) |
| return it->second; |
| |
| return FrameID(-1, -1); |
| } |
| |
| void AXTreeIDRegistry::RemoveAXTreeID(int ax_tree_id) { |
| std::map<AXTreeID, FrameID>::iterator it; |
| it = ax_tree_to_frame_id_map_.find(ax_tree_id); |
| if (it != ax_tree_to_frame_id_map_.end()) { |
| frame_to_ax_tree_id_map_.erase(it->second); |
| ax_tree_to_frame_id_map_.erase(it); |
| } |
| } |
| |
| AXTreeIDRegistry::AXTreeIDRegistry() : ax_tree_id_counter_(-1) { |
| // Always populate default desktop tree value (0 -> 0, 0). |
| GetOrCreateAXTreeID(0, 0); |
| } |
| |
| AXTreeIDRegistry::~AXTreeIDRegistry() { |
| } |