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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 #ifndef PlatformMessagePortChannel_h | |
32 #define PlatformMessagePortChannel_h | |
33 | |
34 // FIXME: This relative path is a temporary hack to support using this | |
35 // header from webkit/glue. | |
36 #include "../public/WebMessagePortChannelClient.h" | |
37 | |
38 #include "MessagePortChannel.h" | |
39 | |
40 #include <wtf/PassRefPtr.h> | |
41 #include <wtf/Threading.h> | |
42 | |
43 namespace WebKit { | |
44 class WebMessagePortChannel; | |
45 } | |
46 | |
47 namespace WebCore { | |
48 | |
49 class MessagePort; | |
50 | |
51 // PlatformMessagePortChannel is a platform-dependent interface to the remote side of a message channel. | |
52 class PlatformMessagePortChannel : public ThreadSafeShared<PlatformMessagePortChannel>, | |
53 public WebKit::WebMessagePortChannelClient { | |
54 public: | |
55 static void createChannel(PassRefPtr<MessagePort>, PassRefPtr<MessagePort>); | |
56 static PassRefPtr<PlatformMessagePortChannel> create(); | |
57 static PassRefPtr<PlatformMessagePortChannel> create(WebKit::WebMessagePortChannel*); | |
58 | |
59 // APIs delegated from MessagePortChannel.h | |
60 bool entangleIfOpen(MessagePort*); | |
61 void disentangle(); | |
62 void postMessageToRemote(PassOwnPtr<MessagePortChannel::EventData>); | |
63 bool tryGetMessageFromRemote(OwnPtr<MessagePortChannel::EventData>&); | |
64 void close(); | |
65 bool isConnectedTo(MessagePort* port); | |
66 bool hasPendingActivity(); | |
67 | |
68 // Releases ownership of the contained web channel. | |
69 WebKit::WebMessagePortChannel* webChannelRelease(); | |
70 | |
71 ~PlatformMessagePortChannel(); | |
72 | |
73 private: | |
74 PlatformMessagePortChannel(); | |
75 PlatformMessagePortChannel(WebKit::WebMessagePortChannel*); | |
76 | |
77 void setEntangledChannel(PassRefPtr<PlatformMessagePortChannel>); | |
78 | |
79 // WebKit::WebMessagePortChannelClient implementation | |
80 virtual void messageAvailable(); | |
81 | |
82 // Mutex used to ensure exclusive access to the object internals. | |
83 Mutex m_mutex; | |
84 | |
85 // Pointer to our entangled pair - cleared when close() is called. | |
86 RefPtr<PlatformMessagePortChannel> m_entangledChannel; | |
87 | |
88 // The port we are connected to - this is the port that is notified when new messages arrive. | |
89 MessagePort* m_localPort; | |
90 | |
91 WebKit::WebMessagePortChannel* m_webChannel; | |
92 }; | |
93 | |
94 } // namespace WebCore | |
95 | |
96 #endif // PlatformMessagePortChannel_h | |
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