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 "bindings/core/v8/V8MessageEvent.h" 33 34 #include "bindings/core/v8/SerializedScriptValue.h" 35 #include "bindings/core/v8/V8Binding.h" 36 #include "bindings/core/v8/V8Blob.h" 37 #include "bindings/core/v8/V8HiddenValue.h" 38 #include "bindings/core/v8/V8MessagePort.h" 39 #include "bindings/core/v8/V8Window.h" 40 #include "bindings/core/v8/custom/V8ArrayBufferCustom.h" 41 #include "core/events/MessageEvent.h" 42 43 namespace blink { 44 45 void V8MessageEvent::dataAttributeGetterCustom(const v8::PropertyCallbackInfo<v8::Value>& info) 46 { 47 MessageEvent* event = V8MessageEvent::toImpl(info.Holder()); 48 49 v8::Handle<v8::Value> result; 50 switch (event->dataType()) { 51 case MessageEvent::DataTypeScriptValue: { 52 result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::data(info.GetIsolate())); 53 if (result.IsEmpty()) { 54 if (!event->dataAsSerializedScriptValue()) { 55 // If we're in an isolated world and the event was created in the main world, 56 // we need to find the 'data' property on the main world wrapper and clone it. 57 v8::Local<v8::Value> mainWorldData = V8HiddenValue::getHiddenValueFromMainWorldWrapper(info.GetIsolate(), event, V8HiddenValue::data(info.GetIsolate())); 58 if (!mainWorldData.IsEmpty()) 59 event->setSerializedData(SerializedScriptValue::createAndSwallowExceptions(mainWorldData, info.GetIsolate())); 60 } 61 if (event->dataAsSerializedScriptValue()) 62 result = event->dataAsSerializedScriptValue()->deserialize(info.GetIsolate()); 63 else 64 result = v8::Null(info.GetIsolate()); 65 } 66 break; 67 } 68 69 case MessageEvent::DataTypeSerializedScriptValue: 70 if (SerializedScriptValue* serializedValue = event->dataAsSerializedScriptValue()) { 71 MessagePortArray ports = event->ports(); 72 result = serializedValue->deserialize(info.GetIsolate(), &ports); 73 } else { 74 result = v8::Null(info.GetIsolate()); 75 } 76 break; 77 78 case MessageEvent::DataTypeString: { 79 result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::stringData(info.GetIsolate())); 80 if (result.IsEmpty()) { 81 String stringValue = event->dataAsString(); 82 result = v8String(info.GetIsolate(), stringValue); 83 } 84 break; 85 } 86 87 case MessageEvent::DataTypeBlob: 88 result = toV8(event->dataAsBlob(), info.Holder(), info.GetIsolate()); 89 break; 90 91 case MessageEvent::DataTypeArrayBuffer: 92 result = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::arrayBufferData(info.GetIsolate())); 93 if (result.IsEmpty()) 94 result = toV8(event->dataAsArrayBuffer(), info.Holder(), info.GetIsolate()); 95 break; 96 } 97 98 // Overwrite the data attribute so it returns the cached result in future invocations. 99 // This custom getter handler will not be called again. 100 v8::PropertyAttribute dataAttr = static_cast<v8::PropertyAttribute>(v8::DontDelete | v8::ReadOnly); 101 info.Holder()->ForceSet(v8AtomicString(info.GetIsolate(), "data"), result, dataAttr); 102 v8SetReturnValue(info, result); 103 } 104 105 void V8MessageEvent::initMessageEventMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info) 106 { 107 ExceptionState exceptionState(ExceptionState::ExecutionContext, "initMessageEvent", "MessageEvent", info.Holder(), info.GetIsolate()); 108 MessageEvent* event = V8MessageEvent::toImpl(info.Holder()); 109 TOSTRING_VOID(V8StringResource<>, typeArg, info[0]); 110 TONATIVE_VOID(bool, canBubbleArg, info[1]->BooleanValue()); 111 TONATIVE_VOID(bool, cancelableArg, info[2]->BooleanValue()); 112 v8::Handle<v8::Value> dataArg = info[3]; 113 TOSTRING_VOID(V8StringResource<>, originArg, info[4]); 114 TOSTRING_VOID(V8StringResource<>, lastEventIdArg, info[5]); 115 LocalDOMWindow* sourceArg = toDOMWindow(info[6], info.GetIsolate()); 116 OwnPtrWillBeRawPtr<MessagePortArray> portArray = nullptr; 117 const int portArrayIndex = 7; 118 if (!isUndefinedOrNull(info[portArrayIndex])) { 119 portArray = adoptPtrWillBeNoop(new MessagePortArray); 120 *portArray = toRefPtrWillBeMemberNativeArray<MessagePort, V8MessagePort>(info[portArrayIndex], portArrayIndex + 1, info.GetIsolate(), exceptionState); 121 if (exceptionState.throwIfNeeded()) 122 return; 123 } 124 event->initMessageEvent(typeArg, canBubbleArg, cancelableArg, originArg, lastEventIdArg, sourceArg, portArray.release()); 125 126 if (!dataArg.IsEmpty()) { 127 V8HiddenValue::setHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::data(info.GetIsolate()), dataArg); 128 if (DOMWrapperWorld::current(info.GetIsolate()).isIsolatedWorld()) 129 event->setSerializedData(SerializedScriptValue::createAndSwallowExceptions(dataArg, info.GetIsolate())); 130 } 131 } 132 133 } // namespace blink 134