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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 // A thin wrapper around buzz::XmppClient that exposes weak pointers | 5 // A thin wrapper around buzz::XmppClient that exposes weak pointers |
6 // so that users know when the buzz::XmppClient becomes invalid to use | 6 // so that users know when the buzz::XmppClient becomes invalid to use |
7 // (not necessarily only at destruction time). | 7 // (not necessarily only at destruction time). |
8 | 8 |
9 #ifndef JINGLE_NOTIFIER_BASE_WEAK_XMPP_CLIENT_H_ | 9 #ifndef JINGLE_NOTIFIER_BASE_WEAK_XMPP_CLIENT_H_ |
10 #define JINGLE_NOTIFIER_BASE_WEAK_XMPP_CLIENT_H_ | 10 #define JINGLE_NOTIFIER_BASE_WEAK_XMPP_CLIENT_H_ |
11 | 11 |
12 #include "base/basictypes.h" | 12 #include "base/basictypes.h" |
13 #include "base/compiler_specific.h" | 13 #include "base/compiler_specific.h" |
14 #include "base/memory/weak_ptr.h" | 14 #include "base/memory/weak_ptr.h" |
15 #include "base/threading/non_thread_safe.h" | 15 #include "base/threading/non_thread_safe.h" |
16 #include "talk/xmpp/xmppclient.h" | 16 #include "talk/xmpp/xmppclient.h" |
17 | 17 |
18 namespace rtc { | 18 namespace talk_base { |
19 class TaskParent; | 19 class TaskParent; |
20 } // namespace | 20 } // namespace |
21 | 21 |
22 namespace notifier { | 22 namespace notifier { |
23 | 23 |
24 // buzz::XmppClient's destructor isn't marked virtual, but it inherits | 24 // buzz::XmppClient's destructor isn't marked virtual, but it inherits |
25 // from rtc::Task, whose destructor *is* marked virtual, so we | 25 // from talk_base::Task, whose destructor *is* marked virtual, so we |
26 // can safely inherit from it. | 26 // can safely inherit from it. |
27 class WeakXmppClient : public buzz::XmppClient, public base::NonThreadSafe { | 27 class WeakXmppClient : public buzz::XmppClient, public base::NonThreadSafe { |
28 public: | 28 public: |
29 explicit WeakXmppClient(rtc::TaskParent* parent); | 29 explicit WeakXmppClient(talk_base::TaskParent* parent); |
30 | 30 |
31 virtual ~WeakXmppClient(); | 31 virtual ~WeakXmppClient(); |
32 | 32 |
33 // Returns a weak pointer that is invalidated when the XmppClient | 33 // Returns a weak pointer that is invalidated when the XmppClient |
34 // becomes invalid to use. | 34 // becomes invalid to use. |
35 base::WeakPtr<WeakXmppClient> AsWeakPtr(); | 35 base::WeakPtr<WeakXmppClient> AsWeakPtr(); |
36 | 36 |
37 // Invalidates all weak pointers to this object. (This method is | 37 // Invalidates all weak pointers to this object. (This method is |
38 // necessary as calling Abort() does not always lead to Stop() being | 38 // necessary as calling Abort() does not always lead to Stop() being |
39 // called, so it's not a reliable way to cause an invalidation.) | 39 // called, so it's not a reliable way to cause an invalidation.) |
40 void Invalidate(); | 40 void Invalidate(); |
41 | 41 |
42 protected: | 42 protected: |
43 virtual void Stop() OVERRIDE; | 43 virtual void Stop() OVERRIDE; |
44 | 44 |
45 private: | 45 private: |
46 // We use our own WeakPtrFactory instead of inheriting from | 46 // We use our own WeakPtrFactory instead of inheriting from |
47 // SupportsWeakPtr since we want to invalidate in other places | 47 // SupportsWeakPtr since we want to invalidate in other places |
48 // besides the destructor. | 48 // besides the destructor. |
49 base::WeakPtrFactory<WeakXmppClient> weak_ptr_factory_; | 49 base::WeakPtrFactory<WeakXmppClient> weak_ptr_factory_; |
50 | 50 |
51 DISALLOW_COPY_AND_ASSIGN(WeakXmppClient); | 51 DISALLOW_COPY_AND_ASSIGN(WeakXmppClient); |
52 }; | 52 }; |
53 | 53 |
54 } // namespace notifier | 54 } // namespace notifier |
55 | 55 |
56 #endif // JINGLE_NOTIFIER_BASE_WEAK_XMPP_CLIENT_H_ | 56 #endif // JINGLE_NOTIFIER_BASE_WEAK_XMPP_CLIENT_H_ |
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