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
3 // found in the LICENSE file.
5 #ifndef CONTENT_BROWSER_MESSAGE_PORT_MESSAGE_FILTER_H_
6 #define CONTENT_BROWSER_MESSAGE_PORT_MESSAGE_FILTER_H_
8 #include "base/callback.h"
9 #include "content/common/content_export.h"
10 #include "content/public/browser/browser_message_filter.h"
14 // Filter for MessagePort related IPC messages (creating and destroying a
15 // MessagePort, sending a message via a MessagePort etc).
16 class CONTENT_EXPORT MessagePortMessageFilter
: public BrowserMessageFilter
{
18 typedef base::Callback
<int(void)> NextRoutingIDCallback
;
20 // |next_routing_id| is owned by this object. It can be used up until
22 explicit MessagePortMessageFilter(const NextRoutingIDCallback
& callback
);
24 // BrowserMessageFilter implementation.
25 virtual void OnChannelClosing() OVERRIDE
;
26 virtual bool OnMessageReceived(const IPC::Message
& message
) OVERRIDE
;
27 virtual void OnDestruct() const OVERRIDE
;
29 int GetNextRoutingID();
31 // Updates message ports registered for |message_port_ids| and returns
32 // new routing IDs for the updated ports via |new_routing_ids|.
33 void UpdateMessagePortsWithNewRoutes(
34 const std::vector
<int>& message_port_ids
,
35 std::vector
<int>* new_routing_ids
);
38 // This is protected, so we can define sub classes for testing.
39 virtual ~MessagePortMessageFilter();
42 friend class BrowserThread
;
43 friend class base::DeleteHelper
<MessagePortMessageFilter
>;
46 void OnCreateMessagePort(int* route_id
, int* message_port_id
);
48 // This is guaranteed to be valid until OnChannelClosing is invoked, and it's
50 NextRoutingIDCallback next_routing_id_
;
52 DISALLOW_IMPLICIT_CONSTRUCTORS(MessagePortMessageFilter
);
55 } // namespace content
57 #endif // CONTENT_BROWSER_WORKER_MESSAGE_FILTER_H_