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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/accessibility/ax_action_handler_registry.h"
#include "base/no_destructor.h"
#include "base/observer_list.h"
#include "base/strings/string_number_conversions.h"
#include "ui/accessibility/ax_action_data.h"
#include "ui/accessibility/ax_action_handler_base.h"
namespace ui {
// static
AXActionHandlerRegistry* AXActionHandlerRegistry::GetInstance() {
static base::NoDestructor<AXActionHandlerRegistry> registry;
return registry.get();
}
void AXActionHandlerRegistry::SetFrameIDForAXTreeID(
const FrameID& frame_id,
const AXTreeID& ax_tree_id) {
auto it = frame_to_ax_tree_id_map_.find(frame_id);
if (it != frame_to_ax_tree_id_map_.end()) {
NOTREACHED();
}
frame_to_ax_tree_id_map_[frame_id] = ax_tree_id;
ax_tree_to_frame_id_map_[ax_tree_id] = frame_id;
}
void AXActionHandlerRegistry::AddObserver(AXActionHandlerObserver* observer) {
observers_.AddObserver(observer);
}
void AXActionHandlerRegistry::RemoveObserver(
AXActionHandlerObserver* observer) {
observers_.RemoveObserver(observer);
}
void AXActionHandlerRegistry::PerformAction(const AXActionData& action_data) {
observers_.Notify(&AXActionHandlerObserver::PerformAction, action_data);
}
AXActionHandlerRegistry::FrameID AXActionHandlerRegistry::GetFrameID(
const 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 AXActionHandlerRegistry::GetAXTreeID(
AXActionHandlerRegistry::FrameID frame_id) {
auto it = frame_to_ax_tree_id_map_.find(frame_id);
if (it != frame_to_ax_tree_id_map_.end())
return it->second;
return AXTreeIDUnknown();
}
AXTreeID AXActionHandlerRegistry::GetOrCreateAXTreeID(
AXActionHandlerBase* handler) {
for (auto it : id_to_action_handler_) {
if (it.second == handler)
return it.first;
}
AXTreeID new_id = AXTreeID::CreateNewAXTreeID();
SetAXTreeID(new_id, handler);
return new_id;
}
AXActionHandlerBase* AXActionHandlerRegistry::GetActionHandler(
AXTreeID ax_tree_id) {
auto it = id_to_action_handler_.find(ax_tree_id);
if (it == id_to_action_handler_.end())
return nullptr;
return it->second;
}
void AXActionHandlerRegistry::SetAXTreeID(const AXTreeID& id,
AXActionHandlerBase* action_handler) {
DCHECK(id_to_action_handler_.find(id) == id_to_action_handler_.end());
id_to_action_handler_[id] = action_handler;
}
void AXActionHandlerRegistry::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);
}
auto action_it = id_to_action_handler_.find(ax_tree_id);
if (action_it != id_to_action_handler_.end())
id_to_action_handler_.erase(action_it);
observers_.Notify(&AXActionHandlerObserver::TreeRemoved, ax_tree_id);
}
AXActionHandlerRegistry::AXActionHandlerRegistry() = default;
AXActionHandlerRegistry::~AXActionHandlerRegistry() = default;
} // namespace ui
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