jsaudioconstructor.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 * 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
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#include "config.h"

#if ENABLE(VIDEO)

#include "JSAudioConstructor.h"

#include "HTMLAudioElement.h"
#include "HTMLNames.h"
#include "JSHTMLAudioElement.h"
#include "ScriptExecutionContext.h"
#include "Text.h"

using namespace JSC;

namespace WebCore {

const ClassInfo JSAudioConstructor::s_info = { "AudioConstructor", 0, 0, 0 };

JSAudioConstructor::JSAudioConstructor(ExecState* exec, ScriptExecutionContext* context)
    : DOMObject(JSAudioConstructor::createStructure(exec->lexicalGlobalObject()->objectPrototype()))
{
    ASSERT(context->isDocument());
    m_document = static_cast<JSDocument*>(asObject(toJS(exec, static_cast<Document*>(context))));

    putDirect(exec->propertyNames().prototype, JSHTMLAudioElementPrototype::self(exec), None);
    putDirect(exec->propertyNames().length, jsNumber(exec, 1), ReadOnly|DontDelete|DontEnum);
}

static JSObject* constructAudio(ExecState* exec, JSObject* constructor, const ArgList& args)
{
    // FIXME: Why doesn't this need the call toJS on the document like JSImageConstructor?

    RefPtr<HTMLAudioElement> audio = new HTMLAudioElement(HTMLNames::audioTag, static_cast<JSAudioConstructor*>(constructor)->document());
    if (args.size() > 0) {
        audio->setSrc(args.at(exec, 0).toString(exec));
        audio->scheduleLoad();
    }
    return asObject(toJS(exec, audio.release()));
}

ConstructType JSAudioConstructor::getConstructData(ConstructData& constructData)
{
    constructData.native.function = constructAudio;
    return ConstructTypeHost;
}

void JSAudioConstructor::mark()
{
    DOMObject::mark();
    if (!m_document->marked())
        m_document->mark();
}

} // namespace WebCore

#endif // ENABLE(VIDEO)