1 /* 2 * Copyright (C) 2009 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 "V8MessageChannel.h" 33 34 #include "Document.h" 35 #include "Frame.h" 36 #include "MessageChannel.h" 37 #include "V8Binding.h" 38 #include "V8MessagePort.h" 39 #include "V8Proxy.h" 40 #include "V8Utilities.h" 41 #include "WorkerContext.h" 42 #include "WorkerContextExecutionProxy.h" 43 44 #include <wtf/RefPtr.h> 45 46 namespace WebCore { 47 48 v8::Handle<v8::Value> V8MessageChannel::constructorCallback(const v8::Arguments& args) 49 { 50 INC_STATS("DOM.MessageChannel.Constructor"); 51 // FIXME: The logic here is almost exact duplicate of V8::constructDOMObject. 52 // Consider refactoring to reduce duplication. 53 if (!args.IsConstructCall()) 54 return throwError("DOM object constructor cannot be called as a function."); 55 56 // Get the ScriptExecutionContext (WorkerContext or Document) 57 ScriptExecutionContext* context = getScriptExecutionContext(); 58 if (!context) 59 return v8::Undefined(); 60 61 // Note: it's OK to let this RefPtr go out of scope because we also call 62 // SetDOMWrapper(), which effectively holds a reference to obj. 63 RefPtr<MessageChannel> obj = MessageChannel::create(context); 64 65 v8::Local<v8::Object> messageChannel = args.Holder(); 66 67 // Create references from the MessageChannel wrapper to the two 68 // MessagePort wrappers to make sure that the MessagePort wrappers 69 // stay alive as long as the MessageChannel wrapper is around. 70 messageChannel->SetInternalField(V8MessageChannel::port1Index, toV8(obj->port1())); 71 messageChannel->SetInternalField(V8MessageChannel::port2Index, toV8(obj->port2())); 72 73 // Setup the standard wrapper object internal fields. 74 V8DOMWrapper::setDOMWrapper(messageChannel, V8ClassIndex::MESSAGECHANNEL, obj.get()); 75 return toV8(obj.release(), messageChannel); 76 } 77 78 79 } // namespace WebCore 80
