Source/WebCore/bindings/js/JSAudioConstructor.cpp

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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", &DOMConstructorWithDocument::s_info, 0, 0 };

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

static EncodedJSValue JSC_HOST_CALL constructAudio(ExecState* exec)
{
    JSAudioConstructor* jsConstructor = static_cast<JSAudioConstructor*>(exec->callee());

    Document* document = jsConstructor->document();
    if (!document)
        return throwVMError(exec, createReferenceError(exec, "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 exec->argument
    // rather than looking at exec->argumentCount.
    String src;
    if (exec->argumentCount() > 0)
        src = ustringToString(exec->argument(0).toString(exec));
    return JSValue::encode(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)