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1 /* | 1 /* |
2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. | 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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41 #include <memory> | 41 #include <memory> |
42 | 42 |
43 namespace blink { | 43 namespace blink { |
44 | 44 |
45 class ExceptionState; | 45 class ExceptionState; |
46 class ExecutionContext; | 46 class ExecutionContext; |
47 class MessagePort; | 47 class MessagePort; |
48 class ScriptState; | 48 class ScriptState; |
49 class SerializedScriptValue; | 49 class SerializedScriptValue; |
50 | 50 |
51 // Not to be confused with WebMessagePortChannelArray; this one uses Vector and
std::unique_ptr instead of WebVector and raw pointers. | 51 // Not to be confused with WebMessagePortChannelArray; this one uses Vector and |
| 52 // std::unique_ptr instead of WebVector and raw pointers. |
52 typedef Vector<WebMessagePortChannelUniquePtr, 1> MessagePortChannelArray; | 53 typedef Vector<WebMessagePortChannelUniquePtr, 1> MessagePortChannelArray; |
53 | 54 |
54 class CORE_EXPORT MessagePort : public EventTargetWithInlineData, | 55 class CORE_EXPORT MessagePort : public EventTargetWithInlineData, |
55 public ActiveScriptWrappable, | 56 public ActiveScriptWrappable, |
56 public ActiveDOMObject, | 57 public ActiveDOMObject, |
57 public WebMessagePortChannelClient { | 58 public WebMessagePortChannelClient { |
58 DEFINE_WRAPPERTYPEINFO(); | 59 DEFINE_WRAPPERTYPEINFO(); |
59 USING_GARBAGE_COLLECTED_MIXIN(MessagePort); | 60 USING_GARBAGE_COLLECTED_MIXIN(MessagePort); |
60 | 61 |
61 public: | 62 public: |
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75 | 76 |
76 // Returns nullptr if the passed-in array is nullptr/empty. | 77 // Returns nullptr if the passed-in array is nullptr/empty. |
77 static std::unique_ptr<WebMessagePortChannelArray> | 78 static std::unique_ptr<WebMessagePortChannelArray> |
78 toWebMessagePortChannelArray(std::unique_ptr<MessagePortChannelArray>); | 79 toWebMessagePortChannelArray(std::unique_ptr<MessagePortChannelArray>); |
79 | 80 |
80 // Returns an empty array if the passed array is empty. | 81 // Returns an empty array if the passed array is empty. |
81 static MessagePortArray* toMessagePortArray( | 82 static MessagePortArray* toMessagePortArray( |
82 ExecutionContext*, | 83 ExecutionContext*, |
83 const WebMessagePortChannelArray&); | 84 const WebMessagePortChannelArray&); |
84 | 85 |
85 // Returns nullptr if there is an exception, or if the passed-in array is null
ptr/empty. | 86 // Returns nullptr if there is an exception, or if the passed-in array is |
| 87 // nullptr/empty. |
86 static std::unique_ptr<MessagePortChannelArray> | 88 static std::unique_ptr<MessagePortChannelArray> |
87 disentanglePorts(ExecutionContext*, const MessagePortArray&, ExceptionState&); | 89 disentanglePorts(ExecutionContext*, const MessagePortArray&, ExceptionState&); |
88 | 90 |
89 // Returns an empty array if the passed array is nullptr/empty. | 91 // Returns an empty array if the passed array is nullptr/empty. |
90 static MessagePortArray* entanglePorts( | 92 static MessagePortArray* entanglePorts( |
91 ExecutionContext&, | 93 ExecutionContext&, |
92 std::unique_ptr<MessagePortChannelArray>); | 94 std::unique_ptr<MessagePortChannelArray>); |
93 | 95 |
94 bool started() const { return m_started; } | 96 bool started() const { return m_started; } |
95 | 97 |
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106 void stop() override { close(); } | 108 void stop() override { close(); } |
107 | 109 |
108 void setOnmessage(EventListener* listener) { | 110 void setOnmessage(EventListener* listener) { |
109 setAttributeEventListener(EventTypeNames::message, listener); | 111 setAttributeEventListener(EventTypeNames::message, listener); |
110 start(); | 112 start(); |
111 } | 113 } |
112 EventListener* onmessage() { | 114 EventListener* onmessage() { |
113 return getAttributeEventListener(EventTypeNames::message); | 115 return getAttributeEventListener(EventTypeNames::message); |
114 } | 116 } |
115 | 117 |
116 // A port starts out its life entangled, and remains entangled until it is clo
sed or is cloned. | 118 // A port starts out its life entangled, and remains entangled until it is |
| 119 // closed or is cloned. |
117 bool isEntangled() const { return !m_closed && !isNeutered(); } | 120 bool isEntangled() const { return !m_closed && !isNeutered(); } |
118 | 121 |
119 // A port gets neutered when it is transferred to a new owner via postMessage(
). | 122 // A port gets neutered when it is transferred to a new owner via |
| 123 // postMessage(). |
120 bool isNeutered() const { return !m_entangledChannel; } | 124 bool isNeutered() const { return !m_entangledChannel; } |
121 | 125 |
122 // For testing only: allows inspection of the entangled channel. | 126 // For testing only: allows inspection of the entangled channel. |
123 WebMessagePortChannel* entangledChannelForTesting() const { | 127 WebMessagePortChannel* entangledChannelForTesting() const { |
124 return m_entangledChannel.get(); | 128 return m_entangledChannel.get(); |
125 } | 129 } |
126 | 130 |
127 DECLARE_VIRTUAL_TRACE(); | 131 DECLARE_VIRTUAL_TRACE(); |
128 | 132 |
129 protected: | 133 protected: |
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140 | 144 |
141 bool m_started; | 145 bool m_started; |
142 bool m_closed; | 146 bool m_closed; |
143 | 147 |
144 RefPtr<ScriptState> m_scriptStateForConversion; | 148 RefPtr<ScriptState> m_scriptStateForConversion; |
145 }; | 149 }; |
146 | 150 |
147 } // namespace blink | 151 } // namespace blink |
148 | 152 |
149 #endif // MessagePort_h | 153 #endif // MessagePort_h |
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