JSAudioConstructor.cpp   [plain text]

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#include "config.h"

#if ENABLE(VIDEO)

#include "JSAudioConstructor.h"

#include "HTMLAudioElement.h"
#include "JSHTMLAudioElement.h"
#include <runtime/Error.h>

using namespace JSC;

namespace WebCore {

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

JSAudioConstructor::JSAudioConstructor(ExecState* exec, JSDOMGlobalObject* globalObject)
    : DOMConstructorWithDocument(JSAudioConstructor::createStructure(globalObject->objectPrototype()), globalObject)
{
    putDirect(exec->propertyNames().prototype, JSHTMLAudioElementPrototype::self(exec, globalObject), None);
    putDirect(exec->propertyNames().length, jsNumber(exec, 1), ReadOnly | DontDelete | DontEnum);
}

static JSObject* constructAudio(ExecState* exec, JSObject* constructor, const ArgList& args)
{
    JSAudioConstructor* jsConstructor = static_cast<JSAudioConstructor*>(constructor);

    Document* document = jsConstructor->document();
    if (!document)
        return throwError(exec, ReferenceError, "Audio constructor associated document is unavailable");

    // Calling toJS on the document causes the JS document wrapper to be
    // added to the window object. This is done to ensure that JSDocument::markChildren
    // will be called, which will cause the audio element to be marked if necessary.
    toJS(exec, jsConstructor->globalObject(), document);

    // FIXME: This converts an undefined argument to the string "undefined", but possibly we
    // should treat it as if no argument was passed instead, by checking the value of args.at
    // rather than looking at args.size.
    String src;
    if (args.size() > 0)
        src = ustringToString(args.at(0).toString(exec));
    return asObject(toJS(exec, jsConstructor->globalObject(),
        HTMLAudioElement::createForJSConstructor(document, src)));
}

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

} // namespace WebCore

#endif // ENABLE(VIDEO)