1 /* 2 * Copyright (C) 2012 Google 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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include "config.h" 32 #include "bindings/v8/V8Callback.h" 33 34 #include "bindings/v8/ScriptController.h" 35 #include "core/dom/Document.h" 36 37 namespace WebCore { 38 39 bool invokeCallback(v8::Handle<v8::Object> callback, int argc, v8::Handle<v8::Value> argv[], bool& callbackReturnValue, ScriptExecutionContext* scriptExecutionContext) 40 { 41 return invokeCallback(callback, v8::Context::GetCurrent()->Global(), argc, argv, callbackReturnValue, scriptExecutionContext); 42 } 43 44 bool invokeCallback(v8::Handle<v8::Object> callback, v8::Handle<v8::Object> thisObject, int argc, v8::Handle<v8::Value> argv[], bool& callbackReturnValue, ScriptExecutionContext* scriptExecutionContext) 45 { 46 v8::TryCatch exceptionCatcher; 47 exceptionCatcher.SetVerbose(true); 48 49 v8::Local<v8::Function> callbackFunction; 50 if (callback->IsFunction()) { 51 callbackFunction = v8::Local<v8::Function>::New(v8::Handle<v8::Function>::Cast(callback)); 52 } else if (callback->IsObject()) { 53 v8::Local<v8::Value> handleEventFunction = callback->Get(v8::String::NewSymbol("handleEvent")); 54 if (handleEventFunction->IsFunction()) 55 callbackFunction = v8::Local<v8::Function>::Cast(handleEventFunction); 56 } else 57 return false; 58 59 if (callbackFunction.IsEmpty()) 60 return false; 61 62 v8::Handle<v8::Value> result = ScriptController::callFunctionWithInstrumentation(scriptExecutionContext, callbackFunction, thisObject, argc, argv); 63 64 callbackReturnValue = !result.IsEmpty() && result->BooleanValue(); 65 return exceptionCatcher.HasCaught(); 66 } 67 68 } // namespace WebCore 69
