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      1 /*
      2  * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include "config.h"
     30 #include "JSCustomSQLTransactionCallback.h"
     31 
     32 #if ENABLE(DATABASE)
     33 
     34 #include "Frame.h"
     35 #include "JSCallbackData.h"
     36 #include "JSDOMGlobalObject.h"
     37 #include "JSSQLTransaction.h"
     38 #include "Page.h"
     39 #include "ScriptController.h"
     40 #include <runtime/JSLock.h>
     41 #include <wtf/MainThread.h>
     42 #include <wtf/RefCountedLeakCounter.h>
     43 
     44 namespace WebCore {
     45 
     46 using namespace JSC;
     47 
     48 #ifndef NDEBUG
     49 static WTF::RefCountedLeakCounter counter("JSCustomSQLTransactionCallback");
     50 #endif
     51 
     52 JSCustomSQLTransactionCallback::JSCustomSQLTransactionCallback(JSObject* callback, JSDOMGlobalObject* globalObject)
     53     : m_data(new JSCallbackData(callback, globalObject))
     54 {
     55 #ifndef NDEBUG
     56     counter.increment();
     57 #endif
     58 }
     59 
     60 JSCustomSQLTransactionCallback::~JSCustomSQLTransactionCallback()
     61 {
     62     callOnMainThread(JSCallbackData::deleteData, m_data);
     63 #ifndef NDEBUG
     64     m_data = 0;
     65     counter.decrement();
     66 #endif
     67 }
     68 
     69 void JSCustomSQLTransactionCallback::handleEvent(SQLTransaction* transaction, bool& raisedException)
     70 {
     71     ASSERT(m_data);
     72 
     73     RefPtr<JSCustomSQLTransactionCallback> protect(this);
     74 
     75     JSC::JSLock lock(SilenceAssertionsOnly);
     76     ExecState* exec = m_data->globalObject()->globalExec();
     77     MarkedArgumentBuffer args;
     78     args.append(toJS(exec, deprecatedGlobalObjectForPrototype(exec), transaction));
     79     m_data->invokeCallback(args, &raisedException);
     80 }
     81 
     82 }
     83 
     84 #endif // ENABLE(DATABASE)
     85