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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 THIRD_PARTY_BLINK_RENDERER_MODULES_SPEECH_SPEECH_SYNTHESIS_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_SPEECH_SPEECH_SYNTHESIS_H_
#include "third_party/blink/renderer/core/dom/context_lifecycle_observer.h"
#include "third_party/blink/renderer/modules/event_target_modules.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/modules/speech/speech_synthesis_utterance.h"
#include "third_party/blink/renderer/modules/speech/speech_synthesis_voice.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/speech/platform_speech_synthesis_utterance.h"
#include "third_party/blink/renderer/platform/speech/platform_speech_synthesizer.h"
namespace blink {
class PlatformSpeechSynthesizerClient;
class MODULES_EXPORT SpeechSynthesis final
: public EventTargetWithInlineData,
public ContextClient,
public PlatformSpeechSynthesizerClient {
DEFINE_WRAPPERTYPEINFO();
USING_GARBAGE_COLLECTED_MIXIN(SpeechSynthesis);
public:
static SpeechSynthesis* Create(ExecutionContext*);
bool pending() const;
bool speaking() const;
bool paused() const;
void speak(SpeechSynthesisUtterance*);
void cancel();
void pause();
void resume();
const HeapVector<Member<SpeechSynthesisVoice>>& getVoices();
// Used in testing to use a mock platform synthesizer
void SetPlatformSynthesizer(PlatformSpeechSynthesizer*);
DEFINE_ATTRIBUTE_EVENT_LISTENER(voiceschanged);
ExecutionContext* GetExecutionContext() const override {
return ContextClient::GetExecutionContext();
}
void Trace(blink::Visitor*) override;
private:
explicit SpeechSynthesis(ExecutionContext*);
// PlatformSpeechSynthesizerClient override methods.
void VoicesDidChange() override;
void DidStartSpeaking(PlatformSpeechSynthesisUtterance*) override;
void DidPauseSpeaking(PlatformSpeechSynthesisUtterance*) override;
void DidResumeSpeaking(PlatformSpeechSynthesisUtterance*) override;
void DidFinishSpeaking(PlatformSpeechSynthesisUtterance*) override;
void SpeakingErrorOccurred(PlatformSpeechSynthesisUtterance*) override;
void BoundaryEventOccurred(PlatformSpeechSynthesisUtterance*,
SpeechBoundary,
unsigned char_index) override;
void StartSpeakingImmediately();
void HandleSpeakingCompleted(SpeechSynthesisUtterance*, bool error_occurred);
void FireEvent(const AtomicString& type,
SpeechSynthesisUtterance*,
uint32_t char_index,
const String& name);
void FireErrorEvent(SpeechSynthesisUtterance*,
unsigned long char_index,
const String& error);
// Returns the utterance at the front of the queue.
SpeechSynthesisUtterance* CurrentSpeechUtterance() const;
// Gets a timestamp in millis that is safe to expose to the web.
// Returns false if it cannot get a timestamp.
bool GetElapsedTimeMillis(double* millis);
bool IsAllowedToStartByAutoplay() const;
Member<PlatformSpeechSynthesizer> platform_speech_synthesizer_;
HeapVector<Member<SpeechSynthesisVoice>> voice_list_;
HeapDeque<Member<SpeechSynthesisUtterance>> utterance_queue_;
bool is_paused_;
// EventTarget
const AtomicString& InterfaceName() const override;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_SPEECH_SPEECH_SYNTHESIS_H_
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