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| 1 /* | |
| 2 * Copyright (C) 2008 Apple 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 | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
| 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 * | |
| 25 */ | |
| 26 | |
| 27 #ifndef MessagePort_h | |
| 28 #define MessagePort_h | |
| 29 | |
| 30 #include "core/dom/ActiveDOMObject.h" | |
| 31 #include "core/events/EventListener.h" | |
| 32 #include "core/events/EventTarget.h" | |
| 33 #include "public/platform/WebMessagePortChannel.h" | |
| 34 #include "public/platform/WebMessagePortChannelClient.h" | |
| 35 #include "wtf/OwnPtr.h" | |
| 36 #include "wtf/PassOwnPtr.h" | |
| 37 #include "wtf/PassRefPtr.h" | |
| 38 #include "wtf/RefCounted.h" | |
| 39 #include "wtf/RefPtr.h" | |
| 40 #include "wtf/Vector.h" | |
| 41 #include "wtf/WeakPtr.h" | |
| 42 | |
| 43 namespace blink { | |
| 44 | |
| 45 class ExceptionState; | |
| 46 class MessagePort; | |
| 47 class ExecutionContext; | |
| 48 class SerializedScriptValue; | |
| 49 | |
| 50 // The overwhelmingly common case is sending a single port, so handle that effic
iently with an inline buffer of size 1. | |
| 51 typedef WillBeHeapVector<RefPtrWillBeMember<MessagePort>, 1> MessagePortArray; | |
| 52 | |
| 53 // Not to be confused with WebMessagePortChannelArray; this one uses Vector and
OwnPtr instead of WebVector and raw pointers. | |
| 54 typedef Vector<OwnPtr<WebMessagePortChannel>, 1> MessagePortChannelArray; | |
| 55 | |
| 56 class MessagePort FINAL : public RefCountedWillBeGarbageCollectedFinalized<Messa
gePort> | |
| 57 , public ActiveDOMObject | |
| 58 , public EventTargetWithInlineData | |
| 59 , public WebMessagePortChannelClient { | |
| 60 DEFINE_WRAPPERTYPEINFO(); | |
| 61 REFCOUNTED_EVENT_TARGET(MessagePort); | |
| 62 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MessagePort); | |
| 63 public: | |
| 64 static PassRefPtrWillBeRawPtr<MessagePort> create(ExecutionContext&); | |
| 65 virtual ~MessagePort(); | |
| 66 | |
| 67 void postMessage(ExecutionContext*, PassRefPtr<SerializedScriptValue> messag
e, const MessagePortArray*, ExceptionState&); | |
| 68 | |
| 69 void start(); | |
| 70 void close(); | |
| 71 | |
| 72 void entangle(PassOwnPtr<WebMessagePortChannel>); | |
| 73 PassOwnPtr<WebMessagePortChannel> disentangle(); | |
| 74 | |
| 75 static PassOwnPtr<WebMessagePortChannelArray> toWebMessagePortChannelArray(P
assOwnPtr<MessagePortChannelArray>); | |
| 76 static PassOwnPtrWillBeRawPtr<MessagePortArray> toMessagePortArray(Execution
Context*, const WebMessagePortChannelArray&); | |
| 77 | |
| 78 // Returns 0 if there is an exception, or if the passed-in array is 0/empty. | |
| 79 static PassOwnPtr<MessagePortChannelArray> disentanglePorts(const MessagePor
tArray*, ExceptionState&); | |
| 80 | |
| 81 // Returns 0 if the passed array is 0/empty. | |
| 82 static PassOwnPtrWillBeRawPtr<MessagePortArray> entanglePorts(ExecutionConte
xt&, PassOwnPtr<MessagePortChannelArray>); | |
| 83 | |
| 84 bool started() const { return m_started; } | |
| 85 | |
| 86 virtual const AtomicString& interfaceName() const OVERRIDE; | |
| 87 virtual ExecutionContext* executionContext() const OVERRIDE { return ActiveD
OMObject::executionContext(); } | |
| 88 virtual MessagePort* toMessagePort() OVERRIDE { return this; } | |
| 89 | |
| 90 // ActiveDOMObject implementation. | |
| 91 virtual bool hasPendingActivity() const OVERRIDE; | |
| 92 virtual void stop() OVERRIDE { close(); } | |
| 93 | |
| 94 void setOnmessage(PassRefPtr<EventListener> listener) | |
| 95 { | |
| 96 setAttributeEventListener(EventTypeNames::message, listener); | |
| 97 start(); | |
| 98 } | |
| 99 EventListener* onmessage() { return getAttributeEventListener(EventTypeNames
::message); } | |
| 100 | |
| 101 // A port starts out its life entangled, and remains entangled until it is c
losed or is cloned. | |
| 102 bool isEntangled() const { return !m_closed && !isNeutered(); } | |
| 103 | |
| 104 // A port gets neutered when it is transferred to a new owner via postMessag
e(). | |
| 105 bool isNeutered() const { return !m_entangledChannel; } | |
| 106 | |
| 107 private: | |
| 108 explicit MessagePort(ExecutionContext&); | |
| 109 | |
| 110 // WebMessagePortChannelClient implementation. | |
| 111 virtual void messageAvailable() OVERRIDE; | |
| 112 void dispatchMessages(); | |
| 113 | |
| 114 OwnPtr<WebMessagePortChannel> m_entangledChannel; | |
| 115 | |
| 116 bool m_started; | |
| 117 bool m_closed; | |
| 118 | |
| 119 WeakPtrFactory<MessagePort> m_weakFactory; | |
| 120 }; | |
| 121 | |
| 122 } // namespace blink | |
| 123 | |
| 124 #endif // MessagePort_h | |
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Chromium Code Reviews
Issue 676723003:
Remove postMessage, MessageChannel and MessagePort. (Closed)
Base URL: https://github.com/domokit/mojo.git@master