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      1 /*
      2  * Copyright (C) 2007, 2008, 2009 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 "JSCallbackData.h"
     31 
     32 #include "Document.h"
     33 #include "JSDOMBinding.h"
     34 #include "JSMainThreadExecState.h"
     35 
     36 using namespace JSC;
     37 
     38 namespace WebCore {
     39 
     40 void JSCallbackData::deleteData(void* context)
     41 {
     42     delete static_cast<JSCallbackData*>(context);
     43 }
     44 
     45 JSValue JSCallbackData::invokeCallback(MarkedArgumentBuffer& args, bool* raisedException)
     46 {
     47     ASSERT(callback());
     48     ASSERT(globalObject());
     49 
     50     ExecState* exec = globalObject()->globalExec();
     51     JSValue function = callback()->get(exec, Identifier(exec, "handleEvent"));
     52 
     53     CallData callData;
     54     CallType callType = getCallData(function, callData);
     55     if (callType == CallTypeNone) {
     56         callType = callback()->getCallData(callData);
     57         if (callType == CallTypeNone)
     58             return JSValue();
     59         function = callback();
     60     }
     61 
     62     globalObject()->globalData().timeoutChecker.start();
     63     ScriptExecutionContext* context = globalObject()->scriptExecutionContext();
     64     // We will fail to get the context if the frame has been detached.
     65     if (!context)
     66         return JSValue();
     67 
     68     bool contextIsDocument = context->isDocument();
     69     JSValue result = contextIsDocument
     70         ? JSMainThreadExecState::call(exec, function, callType, callData, callback(), args)
     71         : JSC::call(exec, function, callType, callData, callback(), args);
     72     globalObject()->globalData().timeoutChecker.stop();
     73 
     74     if (contextIsDocument)
     75         Document::updateStyleForAllDocuments();
     76 
     77     if (exec->hadException()) {
     78         reportCurrentException(exec);
     79         if (raisedException)
     80             *raisedException = true;
     81         return result;
     82     }
     83 
     84     return result;
     85 }
     86 
     87 } // namespace WebCore
     88