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1 /* | 1 /* |
2 * Copyright (C) 2011 Google, Inc. All Rights Reserved. | 2 * Copyright (C) 2011 Google, Inc. All Rights Reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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38 | 38 |
39 #if !ENABLE(OILPAN) | 39 #if !ENABLE(OILPAN) |
40 FrameDestructionObserver::~FrameDestructionObserver() | 40 FrameDestructionObserver::~FrameDestructionObserver() |
41 { | 41 { |
42 observeFrame(nullptr); | 42 observeFrame(nullptr); |
43 } | 43 } |
44 #endif | 44 #endif |
45 | 45 |
46 void FrameDestructionObserver::observeFrame(LocalFrame* frame) | 46 void FrameDestructionObserver::observeFrame(LocalFrame* frame) |
47 { | 47 { |
48 ASSERT(!m_frame || !frame); | |
49 #if !ENABLE(OILPAN) | |
50 if (m_frame) | 48 if (m_frame) |
51 m_frame->removeDestructionObserver(this); | 49 m_frame->removeDestructionObserver(this); |
52 #endif | |
53 | 50 |
54 m_frame = frame; | 51 m_frame = frame; |
55 | 52 |
56 if (m_frame) | 53 if (m_frame) |
57 m_frame->addDestructionObserver(this); | 54 m_frame->addDestructionObserver(this); |
58 } | 55 } |
59 | 56 |
60 #if !ENABLE(OILPAN) | 57 #if !ENABLE(OILPAN) |
61 void FrameDestructionObserver::frameDestroyed() | 58 void FrameDestructionObserver::frameDestroyed() |
62 { | 59 { |
63 m_frame = nullptr; | 60 m_frame = nullptr; |
64 } | 61 } |
65 #endif | 62 #endif |
66 | 63 |
67 void FrameDestructionObserver::willDetachFrameHost() | 64 void FrameDestructionObserver::willDetachFrameHost() |
68 { | 65 { |
69 // Subclasses should override this function to handle this notification. | 66 // Subclasses should override this function to handle this notification. |
70 } | 67 } |
71 | 68 |
72 void FrameDestructionObserver::trace(Visitor* visitor) | 69 void FrameDestructionObserver::trace(Visitor* visitor) |
73 { | 70 { |
74 visitor->trace(m_frame); | 71 visitor->trace(m_frame); |
75 } | 72 } |
76 | 73 |
77 } | 74 } |
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