Source/WebCore/bindings/js/JSMutationCallbackCustom.cpp

/*
 * Copyright (C) 2011 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 * in the documentation and/or other materials provided with the
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#include "config.h"

#if ENABLE(MUTATION_OBSERVERS)

#include "JSMutationCallback.h"

#include "JSDOMWindowBase.h"
#include "JSMutationObserver.h"
#include "JSMutationRecord.h"
#include "ScriptExecutionContext.h"
#include <runtime/JSLock.h>

using namespace JSC;

namespace WebCore {

bool JSMutationCallback::handleEvent(MutationRecordArray* mutations, MutationObserver* observer)
{
    if (!canInvokeCallback())
        return true;

    RefPtr<JSMutationCallback> protect(this);

    JSLockHolder lock(JSDOMWindowBase::commonJSGlobalData());

    ExecState* exec = m_data->globalObject()->globalExec();

    MarkedArgumentBuffer mutationList;
    for (size_t i = 0; i < mutations->size(); ++i)
        mutationList.append(toJS(exec, m_data->globalObject(), mutations->at(i).get()));

    JSValue jsObserver = toJS(exec, m_data->globalObject(), observer);

    MarkedArgumentBuffer args;
    args.append(constructArray(exec, 0, m_data->globalObject(), mutationList));
    args.append(jsObserver);

    bool raisedException = false;
    m_data->invokeCallback(jsObserver, args, &raisedException);
    return !raisedException;
}

} // namespace WebCore

#endif // ENABLE(MUTATION_OBSERVERS)