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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/public/mojom/speech/speech_synthesis.mojom-blink-forward.h"
#include "third_party/blink/renderer/core/speech/speech_synthesis_base.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/collection_support/heap_deque.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_vector.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/mojo/heap_mojo_receiver.h"
#include "third_party/blink/renderer/platform/mojo/heap_mojo_remote.h"
#include "third_party/blink/renderer/platform/supplementable.h"
namespace blink {
class LocalDOMWindow;
class MODULES_EXPORT SpeechSynthesis final
: public EventTarget,
public SpeechSynthesisBase,
public Supplement<LocalDOMWindow>,
public mojom::blink::SpeechSynthesisVoiceListObserver {
DEFINE_WRAPPERTYPEINFO();
public:
static const char kSupplementName[];
static SpeechSynthesisBase* Create(LocalDOMWindow&);
static SpeechSynthesis* speechSynthesis(LocalDOMWindow&);
static void CreateForTesting(
LocalDOMWindow&,
mojo::PendingRemote<mojom::blink::SpeechSynthesis>);
explicit SpeechSynthesis(LocalDOMWindow&);
bool pending() const;
bool speaking() const { return Speaking(); }
bool paused() const;
// SpeechSynthesisBase
void Speak(const String&, const String&) override;
void Cancel() override;
void Pause() override;
void Resume() override;
bool Speaking() const override;
void speak(ScriptState*, SpeechSynthesisUtterance*);
void cancel() { Cancel(); }
void pause() { Pause(); }
void resume() { Resume(); }
const HeapVector<Member<SpeechSynthesisVoice>>& getVoices();
DEFINE_ATTRIBUTE_EVENT_LISTENER(voiceschanged, kVoiceschanged)
ExecutionContext* GetExecutionContext() const override;
// GarbageCollected
void Trace(Visitor*) const override;
// mojom::blink::SpeechSynthesisVoiceListObserver
void OnSetVoiceList(
Vector<mojom::blink::SpeechSynthesisVoicePtr> voices) override;
// These methods are called by SpeechSynthesisUtterance:
void DidStartSpeaking(SpeechSynthesisUtterance*);
void DidPauseSpeaking(SpeechSynthesisUtterance*);
void DidResumeSpeaking(SpeechSynthesisUtterance*);
void DidFinishSpeaking(SpeechSynthesisUtterance*,
mojom::blink::SpeechSynthesisErrorCode);
void SpeakingErrorOccurred(SpeechSynthesisUtterance*);
void WordBoundaryEventOccurred(SpeechSynthesisUtterance*,
unsigned char_index,
unsigned char_length);
void SentenceBoundaryEventOccurred(SpeechSynthesisUtterance*,
unsigned char_index,
unsigned char_length);
mojom::blink::SpeechSynthesis* MojomSynthesis() {
return mojom_synthesis_.get();
}
private:
void VoicesDidChange();
void StartSpeakingImmediately();
void HandleSpeakingCompleted(
SpeechSynthesisUtterance*,
mojom::blink::SpeechSynthesisErrorCode error_code);
void FireEvent(const AtomicString& type,
SpeechSynthesisUtterance*,
uint32_t char_index,
uint32_t char_length,
const String& name);
void FireErrorEvent(SpeechSynthesisUtterance*,
uint32_t 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;
void RecordVoicesForIdentifiability() const;
void SetMojomSynthesisForTesting(
mojo::PendingRemote<mojom::blink::SpeechSynthesis>);
mojom::blink::SpeechSynthesis* TryEnsureMojomSynthesis();
HeapMojoReceiver<mojom::blink::SpeechSynthesisVoiceListObserver,
SpeechSynthesis>
receiver_;
HeapMojoRemote<mojom::blink::SpeechSynthesis> mojom_synthesis_;
HeapVector<Member<SpeechSynthesisVoice>> voice_list_;
HeapDeque<Member<SpeechSynthesisUtterance>> utterance_queue_;
bool is_paused_ = false;
// EventTarget
const AtomicString& InterfaceName() const override;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_SPEECH_SPEECH_SYNTHESIS_H_
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