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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CONTENT_BROWSER_MESSAGE_PORT_MESSAGE_FILTER_H_ | 5 #ifndef CONTENT_BROWSER_MESSAGE_PORT_MESSAGE_FILTER_H_ |
6 #define CONTENT_BROWSER_MESSAGE_PORT_MESSAGE_FILTER_H_ | 6 #define CONTENT_BROWSER_MESSAGE_PORT_MESSAGE_FILTER_H_ |
7 | 7 |
8 #include "base/callback.h" | 8 #include "base/callback.h" |
| 9 #include "content/common/content_export.h" |
9 #include "content/public/browser/browser_message_filter.h" | 10 #include "content/public/browser/browser_message_filter.h" |
10 | 11 |
11 namespace content { | 12 namespace content { |
12 | 13 |
13 // Filter for MessagePort related IPC messages (creating and destroying a | 14 // Filter for MessagePort related IPC messages (creating and destroying a |
14 // MessagePort, sending a message via a MessagePort etc). | 15 // MessagePort, sending a message via a MessagePort etc). |
15 class MessagePortMessageFilter : public BrowserMessageFilter { | 16 class CONTENT_EXPORT MessagePortMessageFilter : public BrowserMessageFilter { |
16 public: | 17 public: |
17 typedef base::Callback<int(void)> NextRoutingIDCallback; | 18 typedef base::Callback<int(void)> NextRoutingIDCallback; |
18 | 19 |
19 // |next_routing_id| is owned by this object. It can be used up until | 20 // |next_routing_id| is owned by this object. It can be used up until |
20 // OnChannelClosing. | 21 // OnChannelClosing. |
21 explicit MessagePortMessageFilter(const NextRoutingIDCallback& callback); | 22 explicit MessagePortMessageFilter(const NextRoutingIDCallback& callback); |
22 | 23 |
23 // BrowserMessageFilter implementation. | 24 // BrowserMessageFilter implementation. |
24 virtual void OnChannelClosing() OVERRIDE; | 25 virtual void OnChannelClosing() OVERRIDE; |
25 virtual bool OnMessageReceived(const IPC::Message& message, | 26 virtual bool OnMessageReceived(const IPC::Message& message, |
26 bool* message_was_ok) OVERRIDE; | 27 bool* message_was_ok) OVERRIDE; |
27 virtual void OnDestruct() const OVERRIDE; | 28 virtual void OnDestruct() const OVERRIDE; |
28 | 29 |
29 int GetNextRoutingID(); | 30 int GetNextRoutingID(); |
30 | 31 |
| 32 protected: |
| 33 // This is protected, so we can define sub classes for testing. |
| 34 virtual ~MessagePortMessageFilter(); |
| 35 |
31 private: | 36 private: |
32 friend class BrowserThread; | 37 friend class BrowserThread; |
33 friend class base::DeleteHelper<MessagePortMessageFilter>; | 38 friend class base::DeleteHelper<MessagePortMessageFilter>; |
34 | 39 |
35 virtual ~MessagePortMessageFilter(); | |
36 | |
37 // Message handlers. | 40 // Message handlers. |
38 void OnCreateMessagePort(int* route_id, int* message_port_id); | 41 void OnCreateMessagePort(int* route_id, int* message_port_id); |
39 | 42 |
40 // This is guaranteed to be valid until OnChannelClosing is invoked, and it's | 43 // This is guaranteed to be valid until OnChannelClosing is invoked, and it's |
41 // not used after. | 44 // not used after. |
42 NextRoutingIDCallback next_routing_id_; | 45 NextRoutingIDCallback next_routing_id_; |
43 | 46 |
44 DISALLOW_IMPLICIT_CONSTRUCTORS(MessagePortMessageFilter); | 47 DISALLOW_IMPLICIT_CONSTRUCTORS(MessagePortMessageFilter); |
45 }; | 48 }; |
46 | 49 |
47 } // namespace content | 50 } // namespace content |
48 | 51 |
49 #endif // CONTENT_BROWSER_WORKER_MESSAGE_FILTER_H_ | 52 #endif // CONTENT_BROWSER_WORKER_MESSAGE_FILTER_H_ |
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