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1 /* | 1 /* |
2 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies) | 2 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies) |
3 * | 3 * |
4 * This library is free software; you can redistribute it and/or | 4 * This library is free software; you can redistribute it and/or |
5 * modify it under the terms of the GNU Library General Public | 5 * modify it under the terms of the GNU Library General Public |
6 * License as published by the Free Software Foundation; either | 6 * License as published by the Free Software Foundation; either |
7 * version 2 of the License, or (at your option) any later version. | 7 * version 2 of the License, or (at your option) any later version. |
8 * | 8 * |
9 * This library is distributed in the hope that it will be useful, | 9 * This library is distributed in the hope that it will be useful, |
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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40 // MediaQueryList interface is specified at http://dev.w3.org/csswg/cssom-view/#
the-mediaquerylist-interface | 40 // MediaQueryList interface is specified at http://dev.w3.org/csswg/cssom-view/#
the-mediaquerylist-interface |
41 // The objects of this class are returned by window.matchMedia. They may be used
to | 41 // The objects of this class are returned by window.matchMedia. They may be used
to |
42 // retrieve the current value of the given media query and to add/remove listene
rs that | 42 // retrieve the current value of the given media query and to add/remove listene
rs that |
43 // will be called whenever the value of the query changes. | 43 // will be called whenever the value of the query changes. |
44 | 44 |
45 class CORE_EXPORT MediaQueryList final : public EventTargetWithInlineData, publi
c ActiveScriptWrappable, public ActiveDOMObject { | 45 class CORE_EXPORT MediaQueryList final : public EventTargetWithInlineData, publi
c ActiveScriptWrappable, public ActiveDOMObject { |
46 REFCOUNTED_EVENT_TARGET(MediaQueryList); | 46 REFCOUNTED_EVENT_TARGET(MediaQueryList); |
47 DEFINE_WRAPPERTYPEINFO(); | 47 DEFINE_WRAPPERTYPEINFO(); |
48 USING_GARBAGE_COLLECTED_MIXIN(MediaQueryList); | 48 USING_GARBAGE_COLLECTED_MIXIN(MediaQueryList); |
49 public: | 49 public: |
50 static RawPtr<MediaQueryList> create(ExecutionContext*, RawPtr<MediaQueryMat
cher>, RawPtr<MediaQuerySet>); | 50 static MediaQueryList* create(ExecutionContext*, MediaQueryMatcher*, MediaQu
erySet*); |
51 ~MediaQueryList() override; | 51 ~MediaQueryList() override; |
52 | 52 |
53 String media() const; | 53 String media() const; |
54 bool matches(); | 54 bool matches(); |
55 | 55 |
56 DEFINE_ATTRIBUTE_EVENT_LISTENER(change); | 56 DEFINE_ATTRIBUTE_EVENT_LISTENER(change); |
57 | 57 |
58 // These two functions are provided for compatibility with JS code | 58 // These two functions are provided for compatibility with JS code |
59 // written before the change listener became a DOM event. | 59 // written before the change listener became a DOM event. |
60 void addDeprecatedListener(RawPtr<EventListener>); | 60 void addDeprecatedListener(EventListener*); |
61 void removeDeprecatedListener(RawPtr<EventListener>); | 61 void removeDeprecatedListener(EventListener*); |
62 | 62 |
63 // C++ code can use these functions to listen to changes instead of having t
o use DOM event listeners. | 63 // C++ code can use these functions to listen to changes instead of having t
o use DOM event listeners. |
64 void addListener(RawPtr<MediaQueryListListener>); | 64 void addListener(MediaQueryListListener*); |
65 void removeListener(RawPtr<MediaQueryListListener>); | 65 void removeListener(MediaQueryListListener*); |
66 | 66 |
67 // Will return true if a DOM event should be scheduled. | 67 // Will return true if a DOM event should be scheduled. |
68 bool mediaFeaturesChanged(HeapVector<Member<MediaQueryListListener>>* listen
ersToNotify); | 68 bool mediaFeaturesChanged(HeapVector<Member<MediaQueryListListener>>* listen
ersToNotify); |
69 | 69 |
70 DECLARE_VIRTUAL_TRACE(); | 70 DECLARE_VIRTUAL_TRACE(); |
71 | 71 |
72 // From ActiveScriptWrappable | 72 // From ActiveScriptWrappable |
73 bool hasPendingActivity() const final; | 73 bool hasPendingActivity() const final; |
74 | 74 |
75 // From ActiveDOMObject | 75 // From ActiveDOMObject |
76 void stop() override; | 76 void stop() override; |
77 | 77 |
78 const AtomicString& interfaceName() const override; | 78 const AtomicString& interfaceName() const override; |
79 ExecutionContext* getExecutionContext() const override; | 79 ExecutionContext* getExecutionContext() const override; |
80 | 80 |
81 private: | 81 private: |
82 MediaQueryList(ExecutionContext*, RawPtr<MediaQueryMatcher>, RawPtr<MediaQue
rySet>); | 82 MediaQueryList(ExecutionContext*, MediaQueryMatcher*, MediaQuerySet*); |
83 | 83 |
84 bool updateMatches(); | 84 bool updateMatches(); |
85 | 85 |
86 Member<MediaQueryMatcher> m_matcher; | 86 Member<MediaQueryMatcher> m_matcher; |
87 Member<MediaQuerySet> m_media; | 87 Member<MediaQuerySet> m_media; |
88 using ListenerList = HeapListHashSet<Member<MediaQueryListListener>>; | 88 using ListenerList = HeapListHashSet<Member<MediaQueryListListener>>; |
89 ListenerList m_listeners; | 89 ListenerList m_listeners; |
90 bool m_matchesDirty; | 90 bool m_matchesDirty; |
91 bool m_matches; | 91 bool m_matches; |
92 }; | 92 }; |
93 | 93 |
94 } // namespace blink | 94 } // namespace blink |
95 | 95 |
96 #endif // MediaQueryList_h | 96 #endif // MediaQueryList_h |
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