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/*
* Copyright (C) 2013 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SpeechSynthesis_h
#define SpeechSynthesis_h
#include "bindings/v8/ScriptWrappable.h"
#include "core/dom/ContextLifecycleObserver.h"
#include "core/events/EventTarget.h"
#include "modules/speech/SpeechSynthesisUtterance.h"
#include "modules/speech/SpeechSynthesisVoice.h"
#include "platform/speech/PlatformSpeechSynthesisUtterance.h"
#include "platform/speech/PlatformSpeechSynthesizer.h"
#include "wtf/Deque.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/RefPtr.h"
namespace WebCore {
class ExceptionState;
class PlatformSpeechSynthesizerClient;
class SpeechSynthesisVoice;
class SpeechSynthesis : public PlatformSpeechSynthesizerClient, public ScriptWrappable, public RefCounted<SpeechSynthesis>, public ContextLifecycleObserver, public EventTargetWithInlineData {
REFCOUNTED_EVENT_TARGET(SpeechSynthesis);
public:
static PassRefPtr<SpeechSynthesis> create(ExecutionContext*);
bool pending() const;
bool speaking() const;
bool paused() const;
void speak(SpeechSynthesisUtterance*, ExceptionState&);
void cancel();
void pause();
void resume();
const Vector<RefPtr<SpeechSynthesisVoice> >& getVoices();
// Used in testing to use a mock platform synthesizer
void setPlatformSynthesizer(PassOwnPtr<PlatformSpeechSynthesizer>);
DEFINE_ATTRIBUTE_EVENT_LISTENER(voiceschanged);
virtual ExecutionContext* executionContext() const;
private:
explicit SpeechSynthesis(ExecutionContext*);
// PlatformSpeechSynthesizerClient override methods.
virtual void voicesDidChange() OVERRIDE;
virtual void didStartSpeaking(PassRefPtr<PlatformSpeechSynthesisUtterance>) OVERRIDE;
virtual void didPauseSpeaking(PassRefPtr<PlatformSpeechSynthesisUtterance>) OVERRIDE;
virtual void didResumeSpeaking(PassRefPtr<PlatformSpeechSynthesisUtterance>) OVERRIDE;
virtual void didFinishSpeaking(PassRefPtr<PlatformSpeechSynthesisUtterance>) OVERRIDE;
virtual void speakingErrorOccurred(PassRefPtr<PlatformSpeechSynthesisUtterance>) OVERRIDE;
virtual void boundaryEventOccurred(PassRefPtr<PlatformSpeechSynthesisUtterance>, SpeechBoundary, unsigned charIndex) OVERRIDE;
void startSpeakingImmediately();
void handleSpeakingCompleted(SpeechSynthesisUtterance*, bool errorOccurred);
void fireEvent(const AtomicString& type, SpeechSynthesisUtterance*, unsigned long charIndex, const String& name);
// Returns the utterance at the front of the queue.
SpeechSynthesisUtterance* currentSpeechUtterance() const;
OwnPtr<PlatformSpeechSynthesizer> m_platformSpeechSynthesizer;
Vector<RefPtr<SpeechSynthesisVoice> > m_voiceList;
Deque<RefPtr<SpeechSynthesisUtterance> > m_utteranceQueue;
bool m_isPaused;
// EventTarget
virtual const AtomicString& interfaceName() const OVERRIDE;
};
} // namespace WebCore
#endif // SpeechSynthesisEvent_h
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