WebCore/bindings/js/JSCustomSQLTransactionCallback.cpp

/*
 * 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
 * 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.
 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 */

#include "config.h"
#include "JSCustomSQLTransactionCallback.h"

#if ENABLE(DATABASE)

#include "Frame.h"
#include "JSCallbackData.h"
#include "JSSQLTransaction.h"
#include "ScriptExecutionContext.h"
#include <runtime/JSLock.h>
#include <wtf/MainThread.h>
#include <wtf/RefCountedLeakCounter.h>

namespace WebCore {

using namespace JSC;

#ifndef NDEBUG
static WTF::RefCountedLeakCounter counter("JSCustomSQLTransactionCallback");
#endif

JSCustomSQLTransactionCallback::JSCustomSQLTransactionCallback(JSObject* callback, JSDOMGlobalObject* globalObject)
    : m_data(new JSCallbackData(callback, globalObject))
    , m_isolatedWorld(globalObject->world())
{
#ifndef NDEBUG
    counter.increment();
#endif
}

JSCustomSQLTransactionCallback::~JSCustomSQLTransactionCallback()
{
    callOnMainThread(JSCallbackData::deleteData, m_data);
#ifndef NDEBUG
    m_data = 0;
    counter.decrement();
#endif
}

void JSCustomSQLTransactionCallback::handleEvent(ScriptExecutionContext* context, SQLTransaction* transaction, bool& raisedException)
{
    ASSERT(m_data);
    ASSERT(context);

    RefPtr<JSCustomSQLTransactionCallback> protect(this);

    JSC::JSLock lock(SilenceAssertionsOnly);
    JSDOMGlobalObject* globalObject = toJSDOMGlobalObject(context, m_isolatedWorld.get());
    if (!globalObject)
        return;

    ExecState* exec = globalObject->globalExec();
    MarkedArgumentBuffer args;
    args.append(toJS(exec, deprecatedGlobalObjectForPrototype(exec), transaction));
    m_data->invokeCallback(args, &raisedException);
}

}

#endif // ENABLE(DATABASE)