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// Copyright 2017 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef COBALT_H5VCC_H5VCC_ACCESSIBILITY_H_
#define COBALT_H5VCC_H5VCC_ACCESSIBILITY_H_
#include "base/message_loop_proxy.h"
#include "cobalt/accessibility/screen_reader.h"
#include "cobalt/accessibility/tts_engine.h"
#include "cobalt/base/event_dispatcher.h"
#include "cobalt/dom/window.h"
#include "cobalt/script/callback_function.h"
#include "cobalt/script/script_value.h"
#include "cobalt/script/wrappable.h"
namespace cobalt {
namespace h5vcc {
class H5vccAccessibility : public script::Wrappable {
public:
// Type for JavaScript event callback.
typedef script::CallbackFunction<void()> H5vccAccessibilityCallback;
typedef script::ScriptValue<H5vccAccessibilityCallback>
H5vccAccessibilityCallbackHolder;
H5vccAccessibility(
base::EventDispatcher* event_dispatcher,
const scoped_refptr<dom::Window>& window,
dom::MutationObserverTaskManager* mutation_observer_task_manager);
bool high_contrast_text() const;
void AddHighContrastTextListener(
const H5vccAccessibilityCallbackHolder& holder);
void OnApplicationEvent(const base::Event* event);
bool text_to_speech() const;
bool built_in_screen_reader() const;
void set_built_in_screen_reader(bool value);
DEFINE_WRAPPABLE_TYPE(H5vccAccessibility);
private:
typedef H5vccAccessibilityCallbackHolder::Reference
H5vccAccessibilityCallbackReference;
void InternalOnApplicationEvent();
scoped_refptr<base::MessageLoopProxy> message_loop_proxy_;
base::EventDispatcher* event_dispatcher_;
scoped_ptr<H5vccAccessibilityCallbackReference> high_contrast_text_listener_;
scoped_ptr<accessibility::TTSEngine> tts_engine_;
scoped_ptr<accessibility::ScreenReader> screen_reader_;
DISALLOW_COPY_AND_ASSIGN(H5vccAccessibility);
};
} // namespace h5vcc
} // namespace cobalt
#endif // COBALT_H5VCC_H5VCC_ACCESSIBILITY_H_