1 /* 2 * Copyright (C) 2007 Henry Mason (hmason (at) mac.com) 3 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 */ 27 28 #include "config.h" 29 #include "core/events/MessageEvent.h" 30 31 #include "bindings/v8/ExceptionMessages.h" 32 #include "bindings/v8/ExceptionState.h" 33 34 namespace WebCore { 35 36 static inline bool isValidSource(EventTarget* source) 37 { 38 return !source || source->toDOMWindow() || source->toMessagePort(); 39 } 40 41 MessageEventInit::MessageEventInit() 42 { 43 } 44 45 MessageEvent::MessageEvent() 46 : m_dataType(DataTypeScriptValue) 47 { 48 ScriptWrappable::init(this); 49 } 50 51 MessageEvent::MessageEvent(const AtomicString& type, const MessageEventInit& initializer) 52 : Event(type, initializer) 53 , m_dataType(DataTypeScriptValue) 54 , m_origin(initializer.origin) 55 , m_lastEventId(initializer.lastEventId) 56 , m_source(isValidSource(initializer.source.get()) ? initializer.source : nullptr) 57 , m_ports(adoptPtr(new MessagePortArray(initializer.ports))) 58 { 59 ScriptWrappable::init(this); 60 ASSERT(isValidSource(m_source.get())); 61 } 62 63 MessageEvent::MessageEvent(const String& origin, const String& lastEventId, PassRefPtrWillBeRawPtr<EventTarget> source, PassOwnPtr<MessagePortArray> ports) 64 : Event(EventTypeNames::message, false, false) 65 , m_dataType(DataTypeScriptValue) 66 , m_origin(origin) 67 , m_lastEventId(lastEventId) 68 , m_source(source) 69 , m_ports(ports) 70 { 71 ScriptWrappable::init(this); 72 ASSERT(isValidSource(m_source.get())); 73 } 74 75 MessageEvent::MessageEvent(PassRefPtr<SerializedScriptValue> data, const String& origin, const String& lastEventId, PassRefPtrWillBeRawPtr<EventTarget> source, PassOwnPtr<MessagePortArray> ports) 76 : Event(EventTypeNames::message, false, false) 77 , m_dataType(DataTypeSerializedScriptValue) 78 , m_dataAsSerializedScriptValue(data) 79 , m_origin(origin) 80 , m_lastEventId(lastEventId) 81 , m_source(source) 82 , m_ports(ports) 83 { 84 ScriptWrappable::init(this); 85 if (m_dataAsSerializedScriptValue) 86 m_dataAsSerializedScriptValue->registerMemoryAllocatedWithCurrentScriptContext(); 87 ASSERT(isValidSource(m_source.get())); 88 } 89 90 MessageEvent::MessageEvent(PassRefPtr<SerializedScriptValue> data, const String& origin, const String& lastEventId, PassRefPtrWillBeRawPtr<EventTarget> source, PassOwnPtr<MessagePortChannelArray> channels) 91 : Event(EventTypeNames::message, false, false) 92 , m_dataType(DataTypeSerializedScriptValue) 93 , m_dataAsSerializedScriptValue(data) 94 , m_origin(origin) 95 , m_lastEventId(lastEventId) 96 , m_source(source) 97 , m_channels(channels) 98 { 99 ScriptWrappable::init(this); 100 if (m_dataAsSerializedScriptValue) 101 m_dataAsSerializedScriptValue->registerMemoryAllocatedWithCurrentScriptContext(); 102 ASSERT(isValidSource(m_source.get())); 103 } 104 105 MessageEvent::MessageEvent(const String& data, const String& origin) 106 : Event(EventTypeNames::message, false, false) 107 , m_dataType(DataTypeString) 108 , m_dataAsString(data) 109 , m_origin(origin) 110 { 111 ScriptWrappable::init(this); 112 } 113 114 MessageEvent::MessageEvent(PassRefPtrWillBeRawPtr<Blob> data, const String& origin) 115 : Event(EventTypeNames::message, false, false) 116 , m_dataType(DataTypeBlob) 117 , m_dataAsBlob(data) 118 , m_origin(origin) 119 { 120 ScriptWrappable::init(this); 121 } 122 123 MessageEvent::MessageEvent(PassRefPtr<ArrayBuffer> data, const String& origin) 124 : Event(EventTypeNames::message, false, false) 125 , m_dataType(DataTypeArrayBuffer) 126 , m_dataAsArrayBuffer(data) 127 , m_origin(origin) 128 { 129 ScriptWrappable::init(this); 130 } 131 132 MessageEvent::~MessageEvent() 133 { 134 } 135 136 PassRefPtrWillBeRawPtr<MessageEvent> MessageEvent::create(const AtomicString& type, const MessageEventInit& initializer, ExceptionState& exceptionState) 137 { 138 if (initializer.source.get() && !isValidSource(initializer.source.get())) { 139 exceptionState.throwTypeError("The optional 'source' property is neither a Window nor MessagePort."); 140 return nullptr; 141 } 142 return adoptRefWillBeNoop(new MessageEvent(type, initializer)); 143 } 144 145 void MessageEvent::initMessageEvent(const AtomicString& type, bool canBubble, bool cancelable, const String& origin, const String& lastEventId, LocalDOMWindow* source, PassOwnPtr<MessagePortArray> ports) 146 { 147 if (dispatched()) 148 return; 149 150 initEvent(type, canBubble, cancelable); 151 152 m_dataType = DataTypeScriptValue; 153 m_origin = origin; 154 m_lastEventId = lastEventId; 155 m_source = source; 156 m_ports = ports; 157 } 158 159 void MessageEvent::initMessageEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<SerializedScriptValue> data, const String& origin, const String& lastEventId, LocalDOMWindow* source, PassOwnPtr<MessagePortArray> ports) 160 { 161 if (dispatched()) 162 return; 163 164 initEvent(type, canBubble, cancelable); 165 166 m_dataType = DataTypeSerializedScriptValue; 167 m_dataAsSerializedScriptValue = data; 168 m_origin = origin; 169 m_lastEventId = lastEventId; 170 m_source = source; 171 m_ports = ports; 172 173 if (m_dataAsSerializedScriptValue) 174 m_dataAsSerializedScriptValue->registerMemoryAllocatedWithCurrentScriptContext(); 175 } 176 177 const AtomicString& MessageEvent::interfaceName() const 178 { 179 return EventNames::MessageEvent; 180 } 181 182 void MessageEvent::entangleMessagePorts(ExecutionContext* context) 183 { 184 m_ports = MessagePort::entanglePorts(*context, m_channels.release()); 185 } 186 187 void MessageEvent::trace(Visitor* visitor) 188 { 189 visitor->trace(m_dataAsBlob); 190 visitor->trace(m_source); 191 Event::trace(visitor); 192 } 193 194 } // namespace WebCore 195
