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1 /* | 1 /* |
2 * Copyright (C) 2010 Julien Chaffraix <jchaffraix@webkit.org> | 2 * Copyright (C) 2010 Julien Chaffraix <jchaffraix@webkit.org> |
3 * All right reserved. | 3 * All right reserved. |
4 * | 4 * |
5 * Redistribution and use in source and binary forms, with or without | 5 * Redistribution and use in source and binary forms, with or without |
6 * modification, are permitted provided that the following conditions | 6 * modification, are permitted provided that the following conditions |
7 * are met: | 7 * are met: |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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38 class EventTarget; | 38 class EventTarget; |
39 | 39 |
40 enum ProgressEventAction { | 40 enum ProgressEventAction { |
41 DoNotFlushProgressEvent, | 41 DoNotFlushProgressEvent, |
42 FlushDeferredProgressEvent, | 42 FlushDeferredProgressEvent, |
43 FlushProgressEvent | 43 FlushProgressEvent |
44 }; | 44 }; |
45 | 45 |
46 // This implements the XHR2 progress event dispatching: "dispatch a progress eve
nt called progress | 46 // This implements the XHR2 progress event dispatching: "dispatch a progress eve
nt called progress |
47 // about every 50ms or for every byte received, whichever is least frequent". | 47 // about every 50ms or for every byte received, whichever is least frequent". |
48 class XMLHttpRequestProgressEventThrottle : public TimerBase { | 48 class XMLHttpRequestProgressEventThrottle FINAL : public TimerBase { |
49 public: | 49 public: |
50 explicit XMLHttpRequestProgressEventThrottle(EventTarget*); | 50 explicit XMLHttpRequestProgressEventThrottle(EventTarget*); |
51 virtual ~XMLHttpRequestProgressEventThrottle(); | 51 virtual ~XMLHttpRequestProgressEventThrottle(); |
52 | 52 |
53 void dispatchProgressEvent(bool lengthComputable, unsigned long long loaded,
unsigned long long total); | 53 void dispatchProgressEvent(bool lengthComputable, unsigned long long loaded,
unsigned long long total); |
54 void dispatchReadyStateChangeEvent(PassRefPtr<Event>, ProgressEventAction =
DoNotFlushProgressEvent); | 54 void dispatchReadyStateChangeEvent(PassRefPtr<Event>, ProgressEventAction =
DoNotFlushProgressEvent); |
55 void dispatchEvent(PassRefPtr<Event>); | 55 void dispatchEvent(PassRefPtr<Event>); |
56 void dispatchEventAndLoadEnd(const AtomicString&, bool, unsigned long long,
unsigned long long); | 56 void dispatchEventAndLoadEnd(const AtomicString&, bool, unsigned long long,
unsigned long long); |
57 | 57 |
58 void suspend(); | 58 void suspend(); |
59 void resume(); | 59 void resume(); |
60 | 60 |
61 private: | 61 private: |
62 static const double minimumProgressEventDispatchingIntervalInSeconds; | 62 static const double minimumProgressEventDispatchingIntervalInSeconds; |
63 | 63 |
64 virtual void fired(); | 64 virtual void fired() OVERRIDE; |
65 void dispatchDeferredEvents(Timer<XMLHttpRequestProgressEventThrottle>*); | 65 void dispatchDeferredEvents(Timer<XMLHttpRequestProgressEventThrottle>*); |
66 bool flushDeferredProgressEvent(); | 66 bool flushDeferredProgressEvent(); |
67 void deliverProgressEvent(); | 67 void deliverProgressEvent(); |
68 | 68 |
69 bool hasEventToDispatch() const; | 69 bool hasEventToDispatch() const; |
70 | 70 |
71 // Weak pointer to our XMLHttpRequest object as it is the one holding us. | 71 // Weak pointer to our XMLHttpRequest object as it is the one holding us. |
72 EventTarget* m_target; | 72 EventTarget* m_target; |
73 | 73 |
74 bool m_lengthComputable; | 74 bool m_lengthComputable; |
75 unsigned long long m_loaded; | 75 unsigned long long m_loaded; |
76 unsigned long long m_total; | 76 unsigned long long m_total; |
77 | 77 |
78 bool m_deferEvents; | 78 bool m_deferEvents; |
79 RefPtr<Event> m_deferredProgressEvent; | 79 RefPtr<Event> m_deferredProgressEvent; |
80 Vector<RefPtr<Event> > m_deferredEvents; | 80 Vector<RefPtr<Event> > m_deferredEvents; |
81 Timer<XMLHttpRequestProgressEventThrottle> m_dispatchDeferredEventsTimer; | 81 Timer<XMLHttpRequestProgressEventThrottle> m_dispatchDeferredEventsTimer; |
82 }; | 82 }; |
83 | 83 |
84 } // namespace WebCore | 84 } // namespace WebCore |
85 | 85 |
86 #endif // XMLHttpRequestProgressEventThrottle_h | 86 #endif // XMLHttpRequestProgressEventThrottle_h |
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