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Side by Side Diff: third_party/WebKit/Source/core/frame/EventHandlerRegistry.h

Issue 2417783005: [Master/Overview CL] Make PageScaleFactor work for oopif subframe.
Patch Set: Rebase to master@{#429656}. Created 4 years, 1 month ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 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 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef EventHandlerRegistry_h 5 #ifndef EventHandlerRegistry_h
6 #define EventHandlerRegistry_h 6 #define EventHandlerRegistry_h
7 7
8 #include "core/CoreExport.h" 8 #include "core/CoreExport.h"
9 #include "core/frame/FrameHost.h" 9 #include "core/frame/FrameHost.h"
10 #include "wtf/HashCountedSet.h" 10 #include "wtf/HashCountedSet.h"
11 11
12 namespace blink { 12 namespace blink {
13 13
14 class AddEventListenerOptions; 14 class AddEventListenerOptions;
15 class Document; 15 class Document;
16 class EventTarget; 16 class EventTarget;
17 class LocalFrame;
17 18
18 typedef HashCountedSet<UntracedMember<EventTarget>> EventTargetSet; 19 typedef HashCountedSet<UntracedMember<EventTarget>> EventTargetSet;
19 20
20 // Registry for keeping track of event handlers. Note that only handlers on 21 // Registry for keeping track of event handlers. Note that only handlers on
21 // documents that can be rendered or can receive input (i.e., are attached to a 22 // documents that can be rendered or can receive input (i.e., are attached to a
22 // FrameHost) are registered here. 23 // FrameHost) are registered here.
23 class CORE_EXPORT EventHandlerRegistry final 24 class CORE_EXPORT EventHandlerRegistry final
24 : public GarbageCollectedFinalized<EventHandlerRegistry> { 25 : public GarbageCollectedFinalized<EventHandlerRegistry> {
25 public: 26 public:
26 explicit EventHandlerRegistry(FrameHost&); 27 explicit EventHandlerRegistry(FrameHost&);
(...skipping 64 matching lines...) Expand 10 before | Expand all | Expand 10 after
91 // Returns true if the operation actually added a new target or completely 92 // Returns true if the operation actually added a new target or completely
92 // removed an existing one. 93 // removed an existing one.
93 bool updateEventHandlerTargets(ChangeOperation, 94 bool updateEventHandlerTargets(ChangeOperation,
94 EventHandlerClass, 95 EventHandlerClass,
95 EventTarget*); 96 EventTarget*);
96 97
97 // Called on the EventHandlerRegistry of the root Document to notify 98 // Called on the EventHandlerRegistry of the root Document to notify
98 // clients when we have added the first handler or removed the last one for 99 // clients when we have added the first handler or removed the last one for
99 // a given event class. |hasActiveHandlers| can be used to distinguish 100 // a given event class. |hasActiveHandlers| can be used to distinguish
100 // between the two cases. 101 // between the two cases.
101 void notifyHasHandlersChanged(EventHandlerClass, bool hasActiveHandlers); 102 void notifyHasHandlersChanged(LocalFrame*,
103 EventHandlerClass,
104 bool hasActiveHandlers);
102 105
103 // Called to notify clients whenever a single event handler target is 106 // Called to notify clients whenever a single event handler target is
104 // registered or unregistered. If several handlers are registered for the 107 // registered or unregistered. If several handlers are registered for the
105 // same target, only the first registration will trigger this notification. 108 // same target, only the first registration will trigger this notification.
106 void notifyDidAddOrRemoveEventHandlerTarget(EventHandlerClass); 109 void notifyDidAddOrRemoveEventHandlerTarget(EventHandlerClass);
107 110
108 // Record a change operation to a given event handler class and notify any 111 // Record a change operation to a given event handler class and notify any
109 // parent registry and other clients accordingly. 112 // parent registry and other clients accordingly.
110 void updateEventHandlerOfType(ChangeOperation, 113 void updateEventHandlerOfType(ChangeOperation,
111 const AtomicString& eventType, 114 const AtomicString& eventType,
112 const AddEventListenerOptions&, 115 const AddEventListenerOptions&,
113 EventTarget*); 116 EventTarget*);
114 117
115 void updateEventHandlerInternal(ChangeOperation, 118 void updateEventHandlerInternal(ChangeOperation,
116 EventHandlerClass, 119 EventHandlerClass,
117 EventTarget*); 120 EventTarget*);
118 121
119 void updateAllEventHandlers(ChangeOperation, EventTarget&); 122 void updateAllEventHandlers(ChangeOperation, EventTarget&);
120 123
121 void checkConsistency() const; 124 void checkConsistency() const;
122 125
123 Member<FrameHost> m_frameHost; 126 Member<FrameHost> m_frameHost;
124 EventTargetSet m_targets[EventHandlerClassCount]; 127 EventTargetSet m_targets[EventHandlerClassCount];
125 }; 128 };
126 129
127 } // namespace blink 130 } // namespace blink
128 131
129 #endif // EventHandlerRegistry_h 132 #endif // EventHandlerRegistry_h
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