1 /*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * (C) 2001 Dirk Mueller (mueller@kde.org)
5 * Copyright (C) 2004, 2005, 2006, 2007, 2012 Apple Inc. All rights reserved.
6 * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
7 * (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
8 * Copyright (C) 2011 Andreas Kling (kling@webkit.org)
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
20 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
27 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 */
32
33 #ifndef EventListenerMap_h
34 #define EventListenerMap_h
35
36 #include "core/events/RegisteredEventListener.h"
37 #include "wtf/PassOwnPtr.h"
38 #include "wtf/text/AtomicStringHash.h"
39
40 namespace blink {
41
42 class EventTarget;
43
44 typedef Vector<RegisteredEventListener, 1> EventListenerVector;
45
46 class EventListenerMap {
47 public:
48 EventListenerMap();
49
isEmpty()50 bool isEmpty() const { return m_entries.isEmpty(); }
51 bool contains(const AtomicString& eventType) const;
52 bool containsCapturing(const AtomicString& eventType) const;
53
54 void clear();
55 bool add(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture);
56 bool remove(const AtomicString& eventType, EventListener*, bool useCapture, size_t& indexOfRemovedListener);
57 EventListenerVector* find(const AtomicString& eventType);
58 Vector<AtomicString> eventTypes() const;
59
60 void removeFirstEventListenerCreatedFromMarkup(const AtomicString& eventType);
61 void copyEventListenersNotCreatedFromMarkupToTarget(EventTarget*);
62
63 private:
64 friend class EventListenerIterator;
65
66 void assertNoActiveIterators();
67
68 Vector<std::pair<AtomicString, OwnPtr<EventListenerVector> >, 2> m_entries;
69
70 #if ENABLE(ASSERT)
71 int m_activeIteratorCount;
72 #endif
73 };
74
75 class EventListenerIterator {
76 WTF_MAKE_NONCOPYABLE(EventListenerIterator);
77 public:
78 EventListenerIterator();
79 EventListenerIterator(EventTarget*);
80 #if ENABLE(ASSERT)
81 ~EventListenerIterator();
82 #endif
83
84 EventListener* nextListener();
85
86 private:
87 EventListenerMap* m_map;
88 unsigned m_entryIndex;
89 unsigned m_index;
90 };
91
92 #if !ENABLE(ASSERT)
assertNoActiveIterators()93 inline void EventListenerMap::assertNoActiveIterators() { }
94 #endif
95
96 } // namespace blink
97
98 #endif // EventListenerMap_h
99