Source/WebCore/Modules/speech/SpeechSynthesisUtterance.cpp

/*
 * 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 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 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
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 */

#include "config.h"
#include "SpeechSynthesisUtterance.h"

#if ENABLE(SPEECH_SYNTHESIS)

namespace WebCore {
    
Ref<SpeechSynthesisUtterance> SpeechSynthesisUtterance::create(ScriptExecutionContext& context, const String& text)
{
    return adoptRef(*new SpeechSynthesisUtterance(context, text));
}

SpeechSynthesisUtterance::SpeechSynthesisUtterance(ScriptExecutionContext& context, const String& text)
    : ContextDestructionObserver(&context)
    , m_platformUtterance(PlatformSpeechSynthesisUtterance::create(*this))
{
    m_platformUtterance->setText(text);
}

SpeechSynthesisUtterance::~SpeechSynthesisUtterance()
{
    m_platformUtterance->setClient(nullptr);
}

SpeechSynthesisVoice* SpeechSynthesisUtterance::voice() const
{
    return m_voice.get();
}

void SpeechSynthesisUtterance::setVoice(SpeechSynthesisVoice* voice)
{
    if (!voice)
        return;
    
    // Cache our own version of the SpeechSynthesisVoice so that we don't have to do some lookup
    // to go from the platform voice back to the speech synthesis voice in the read property.
    m_voice = voice;
    
    if (voice)
        m_platformUtterance->setVoice(voice->platformVoice());
}

} // namespace WebCore

#endif // ENABLE(SPEECH_SYNTHESIS)