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// 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/accessibility/ax_tree_id_registry.h"
#include "base/memory/singleton.h"
#include "base/strings/string_number_conversions.h"
#include "ui/accessibility/ax_host_delegate.h"
namespace ui {
// static
AXTreeIDRegistry* AXTreeIDRegistry::GetInstance() {
return base::Singleton<AXTreeIDRegistry>::get();
}
AXTreeID AXTreeIDRegistry::GetOrCreateAXTreeID(int process_id, int routing_id) {
FrameID frame_id(process_id, routing_id);
auto it = frame_to_ax_tree_id_map_.find(frame_id);
if (it != frame_to_ax_tree_id_map_.end())
return it->second;
AXTreeID new_id =
AXTreeID::FromString(base::IntToString(++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(AXTreeID ax_tree_id) {
auto 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);
}
AXTreeID AXTreeIDRegistry::GetOrCreateAXTreeID(AXHostDelegate* delegate) {
for (auto it : id_to_host_delegate_) {
if (it.second == delegate)
return it.first;
}
AXTreeID new_id =
AXTreeID::FromString(base::IntToString(++ax_tree_id_counter_));
id_to_host_delegate_[new_id] = delegate;
return new_id;
}
AXHostDelegate* AXTreeIDRegistry::GetHostDelegate(AXTreeID ax_tree_id) {
auto it = id_to_host_delegate_.find(ax_tree_id);
if (it == id_to_host_delegate_.end())
return nullptr;
return it->second;
}
void AXTreeIDRegistry::SetDelegateForID(AXHostDelegate* delegate, AXTreeID id) {
id_to_host_delegate_[id] = delegate;
}
void AXTreeIDRegistry::RemoveAXTreeID(AXTreeID ax_tree_id) {
auto frame_it = ax_tree_to_frame_id_map_.find(ax_tree_id);
if (frame_it != ax_tree_to_frame_id_map_.end()) {
frame_to_ax_tree_id_map_.erase(frame_it->second);
ax_tree_to_frame_id_map_.erase(frame_it);
return;
}
auto action_it = id_to_host_delegate_.find(ax_tree_id);
if (action_it != id_to_host_delegate_.end())
id_to_host_delegate_.erase(action_it);
}
AXTreeIDRegistry::AXTreeIDRegistry() : ax_tree_id_counter_(-1) {
// Always populate default desktop tree value (0 -> 0, 0).
GetOrCreateAXTreeID(0, 0);
}
AXTreeIDRegistry::~AXTreeIDRegistry() {}
} // namespace ui
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