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1 /* | 1 /* |
2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. | 2 * Copyright (C) 2008 Apple 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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30 #include "core/CoreExport.h" | 30 #include "core/CoreExport.h" |
31 #include "core/dom/ContextLifecycleObserver.h" | 31 #include "core/dom/ContextLifecycleObserver.h" |
32 #include "wtf/Assertions.h" | 32 #include "wtf/Assertions.h" |
33 | 33 |
34 namespace blink { | 34 namespace blink { |
35 | 35 |
36 class CORE_EXPORT ActiveDOMObject : public ContextLifecycleObserver { | 36 class CORE_EXPORT ActiveDOMObject : public ContextLifecycleObserver { |
37 public: | 37 public: |
38 ActiveDOMObject(ExecutionContext*); | 38 ActiveDOMObject(ExecutionContext*); |
39 | 39 |
40 // suspendIfNeeded() should be called exactly once after object construction t
o synchronize | 40 // suspendIfNeeded() should be called exactly once after object construction |
41 // the suspend state with that in ExecutionContext. | 41 // to synchronize the suspend state with that in ExecutionContext. |
42 void suspendIfNeeded(); | 42 void suspendIfNeeded(); |
43 #if DCHECK_IS_ON() | 43 #if DCHECK_IS_ON() |
44 bool suspendIfNeededCalled() const { return m_suspendIfNeededCalled; } | 44 bool suspendIfNeededCalled() const { return m_suspendIfNeededCalled; } |
45 #endif | 45 #endif |
46 | 46 |
47 // These methods have an empty default implementation so that subclasses | 47 // These methods have an empty default implementation so that subclasses |
48 // which don't need special treatment can skip implementation. | 48 // which don't need special treatment can skip implementation. |
49 virtual void suspend(); | 49 virtual void suspend(); |
50 virtual void resume(); | 50 virtual void resume(); |
51 virtual void stop(); | 51 virtual void stop(); |
52 | 52 |
53 void didMoveToNewExecutionContext(ExecutionContext*); | 53 void didMoveToNewExecutionContext(ExecutionContext*); |
54 | 54 |
55 protected: | 55 protected: |
56 virtual ~ActiveDOMObject(); | 56 virtual ~ActiveDOMObject(); |
57 | 57 |
58 private: | 58 private: |
59 #if DCHECK_IS_ON() | 59 #if DCHECK_IS_ON() |
60 bool m_suspendIfNeededCalled; | 60 bool m_suspendIfNeededCalled; |
61 #endif | 61 #endif |
62 }; | 62 }; |
63 | 63 |
64 } // namespace blink | 64 } // namespace blink |
65 | 65 |
66 #endif // ActiveDOMObject_h | 66 #endif // ActiveDOMObject_h |
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