1 /* 2 * Copyright (C) 2007 Henry Mason (hmason@mac.com) 3 * Copyright (C) 2003, 2004, 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 #ifndef MessageEvent_h 29 #define MessageEvent_h 30 31 #include "bindings/core/v8/SerializedScriptValue.h" 32 #include "core/events/Event.h" 33 #include "core/events/EventTarget.h" 34 #include "core/dom/MessagePort.h" 35 #include "core/fileapi/Blob.h" 36 #include "core/frame/LocalDOMWindow.h" 37 #include "wtf/ArrayBuffer.h" 38 39 namespace blink { 40 41 struct MessageEventInit : public EventInit { 42 MessageEventInit(); 43 44 String origin; 45 String lastEventId; 46 RefPtrWillBeMember<EventTarget> source; 47 MessagePortArray ports; 48 }; 49 50 class MessageEvent FINAL : public Event { 51 DEFINE_WRAPPERTYPEINFO(); 52 public: create()53 static PassRefPtrWillBeRawPtr<MessageEvent> create() 54 { 55 return adoptRefWillBeNoop(new MessageEvent); 56 } 57 static PassRefPtrWillBeRawPtr<MessageEvent> create(PassOwnPtrWillBeRawPtr<MessagePortArray> ports, const String& origin = String(), const String& lastEventId = String(), PassRefPtrWillBeRawPtr<EventTarget> source = nullptr) 58 { 59 return adoptRefWillBeNoop(new MessageEvent(origin, lastEventId, source, ports)); 60 } 61 static PassRefPtrWillBeRawPtr<MessageEvent> create(PassOwnPtrWillBeRawPtr<MessagePortArray> ports, PassRefPtr<SerializedScriptValue> data, const String& origin = String(), const String& lastEventId = String(), PassRefPtrWillBeRawPtr<EventTarget> source = nullptr) 62 { 63 return adoptRefWillBeNoop(new MessageEvent(data, origin, lastEventId, source, ports)); 64 } 65 static PassRefPtrWillBeRawPtr<MessageEvent> create(PassOwnPtr<MessagePortChannelArray> channels, PassRefPtr<SerializedScriptValue> data, const String& origin = String(), const String& lastEventId = String(), PassRefPtrWillBeRawPtr<EventTarget> source = nullptr) 66 { 67 return adoptRefWillBeNoop(new MessageEvent(data, origin, lastEventId, source, channels)); 68 } 69 static PassRefPtrWillBeRawPtr<MessageEvent> create(const String& data, const String& origin = String()) 70 { 71 return adoptRefWillBeNoop(new MessageEvent(data, origin)); 72 } 73 static PassRefPtrWillBeRawPtr<MessageEvent> create(PassRefPtrWillBeRawPtr<Blob> data, const String& origin = String()) 74 { 75 return adoptRefWillBeNoop(new MessageEvent(data, origin)); 76 } 77 static PassRefPtrWillBeRawPtr<MessageEvent> create(PassRefPtr<ArrayBuffer> data, const String& origin = String()) 78 { 79 return adoptRefWillBeNoop(new MessageEvent(data, origin)); 80 } 81 static PassRefPtrWillBeRawPtr<MessageEvent> create(const AtomicString& type, const MessageEventInit& initializer, ExceptionState&); 82 virtual ~MessageEvent(); 83 84 void initMessageEvent(const AtomicString& type, bool canBubble, bool cancelable, const String& origin, const String& lastEventId, LocalDOMWindow* source, PassOwnPtrWillBeRawPtr<MessagePortArray>); 85 void initMessageEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<SerializedScriptValue> data, const String& origin, const String& lastEventId, LocalDOMWindow* source, PassOwnPtrWillBeRawPtr<MessagePortArray>); 86 origin()87 const String& origin() const { return m_origin; } lastEventId()88 const String& lastEventId() const { return m_lastEventId; } source()89 EventTarget* source() const { return m_source.get(); } ports()90 MessagePortArray ports() const { return m_ports ? *m_ports : MessagePortArray(); } channels()91 MessagePortChannelArray* channels() const { return m_channels ? m_channels.get() : 0; } 92 93 virtual const AtomicString& interfaceName() const OVERRIDE; 94 95 enum DataType { 96 DataTypeScriptValue, 97 DataTypeSerializedScriptValue, 98 DataTypeString, 99 DataTypeBlob, 100 DataTypeArrayBuffer 101 }; dataType()102 DataType dataType() const { return m_dataType; } dataAsSerializedScriptValue()103 SerializedScriptValue* dataAsSerializedScriptValue() const { ASSERT(m_dataType == DataTypeScriptValue || m_dataType == DataTypeSerializedScriptValue); return m_dataAsSerializedScriptValue.get(); } dataAsString()104 String dataAsString() const { ASSERT(m_dataType == DataTypeString); return m_dataAsString; } dataAsBlob()105 Blob* dataAsBlob() const { ASSERT(m_dataType == DataTypeBlob); return m_dataAsBlob.get(); } dataAsArrayBuffer()106 ArrayBuffer* dataAsArrayBuffer() const { ASSERT(m_dataType == DataTypeArrayBuffer); return m_dataAsArrayBuffer.get(); } 107 setSerializedData(PassRefPtr<SerializedScriptValue> data)108 void setSerializedData(PassRefPtr<SerializedScriptValue> data) 109 { 110 ASSERT(!m_dataAsSerializedScriptValue); 111 m_dataAsSerializedScriptValue = data; 112 } 113 114 void entangleMessagePorts(ExecutionContext*); 115 116 virtual void trace(Visitor*) OVERRIDE; 117 118 virtual v8::Handle<v8::Object> associateWithWrapper(const WrapperTypeInfo*, v8::Handle<v8::Object> wrapper, v8::Isolate*) OVERRIDE; 119 120 private: 121 MessageEvent(); 122 MessageEvent(const AtomicString&, const MessageEventInit&); 123 MessageEvent(const String& origin, const String& lastEventId, PassRefPtrWillBeRawPtr<EventTarget> source, PassOwnPtrWillBeRawPtr<MessagePortArray>); 124 MessageEvent(PassRefPtr<SerializedScriptValue> data, const String& origin, const String& lastEventId, PassRefPtrWillBeRawPtr<EventTarget> source, PassOwnPtrWillBeRawPtr<MessagePortArray>); 125 MessageEvent(PassRefPtr<SerializedScriptValue> data, const String& origin, const String& lastEventId, PassRefPtrWillBeRawPtr<EventTarget> source, PassOwnPtr<MessagePortChannelArray>); 126 127 MessageEvent(const String& data, const String& origin); 128 MessageEvent(PassRefPtrWillBeRawPtr<Blob> data, const String& origin); 129 MessageEvent(PassRefPtr<ArrayBuffer> data, const String& origin); 130 131 DataType m_dataType; 132 RefPtr<SerializedScriptValue> m_dataAsSerializedScriptValue; 133 String m_dataAsString; 134 RefPtrWillBeMember<Blob> m_dataAsBlob; 135 RefPtr<ArrayBuffer> m_dataAsArrayBuffer; 136 String m_origin; 137 String m_lastEventId; 138 RefPtrWillBeMember<EventTarget> m_source; 139 // m_ports are the MessagePorts in an engtangled state, and m_channels are 140 // the MessageChannels in a disentangled state. Only one of them can be 141 // non-empty at a time. entangleMessagePorts() moves between the states. 142 OwnPtrWillBeMember<MessagePortArray> m_ports; 143 OwnPtr<MessagePortChannelArray> m_channels; 144 }; 145 146 } // namespace blink 147 148 #endif // MessageEvent_h 149