1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef MediaQueryListEvent_h 6 #define MediaQueryListEvent_h 7 8 #include "core/css/MediaQueryList.h" 9 #include "core/events/Event.h" 10 11 namespace blink { 12 13 struct MediaQueryListEventInit : public EventInit { 14 MediaQueryListEventInit() : matches(false) { } 15 16 String media; 17 bool matches; 18 }; 19 20 class MediaQueryListEvent FINAL : public Event { 21 DEFINE_WRAPPERTYPEINFO(); 22 public: 23 static PassRefPtrWillBeRawPtr<MediaQueryListEvent> create() 24 { 25 return adoptRefWillBeNoop(new MediaQueryListEvent); 26 } 27 28 static PassRefPtrWillBeRawPtr<MediaQueryListEvent> create(PassRefPtrWillBeRawPtr<MediaQueryList> list) 29 { 30 return adoptRefWillBeNoop(new MediaQueryListEvent(list)); 31 } 32 33 static PassRefPtrWillBeRawPtr<MediaQueryListEvent> create(const String& media, bool matches) 34 { 35 return adoptRefWillBeNoop(new MediaQueryListEvent(media, matches)); 36 } 37 38 static PassRefPtrWillBeRawPtr<MediaQueryListEvent> create(const AtomicString& eventType, const MediaQueryListEventInit& initializer) 39 { 40 return adoptRefWillBeNoop(new MediaQueryListEvent(eventType, initializer)); 41 } 42 43 String media() const { return m_mediaQueryList ? m_mediaQueryList->media() : m_media; } 44 bool matches() const { return m_mediaQueryList ? m_mediaQueryList->matches() : m_matches; } 45 46 virtual const AtomicString& interfaceName() const OVERRIDE { return EventNames::MediaQueryListEvent; } 47 48 virtual void trace(Visitor* visitor) OVERRIDE 49 { 50 Event::trace(visitor); 51 visitor->trace(m_mediaQueryList); 52 } 53 54 private: 55 MediaQueryListEvent() 56 : m_matches(false) { } 57 58 MediaQueryListEvent(const String& media, bool matches) 59 : Event(EventTypeNames::change, false, false) 60 , m_media(media) 61 , m_matches(matches) { } 62 63 explicit MediaQueryListEvent(PassRefPtrWillBeRawPtr<MediaQueryList> list) 64 : Event(EventTypeNames::change, false, false) 65 , m_mediaQueryList(list) 66 , m_matches(false) { } 67 68 MediaQueryListEvent(const AtomicString& eventType, const MediaQueryListEventInit& initializer) 69 : Event(eventType, initializer) 70 , m_media(initializer.media) 71 , m_matches(initializer.matches) { } 72 73 // We have m_media/m_matches for JS-created events; we use m_mediaQueryList 74 // for events that blink generates. 75 RefPtrWillBeMember<MediaQueryList> m_mediaQueryList; 76 String m_media; 77 bool m_matches; 78 }; 79 80 } // namespace blink 81 82 #endif // MediaQueryListEvent_h 83