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 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)
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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.
34 #include "core/events/EventListenerMap.h"
36 #include "core/events/EventTarget.h"
37 #include "wtf/StdLibExtras.h"
38 #include "wtf/Vector.h"
41 #include "wtf/ThreadingPrimitives.h"
49 static Mutex& activeIteratorCountMutex()
51 DEFINE_STATIC_LOCAL(Mutex, mutex, ());
55 void EventListenerMap::assertNoActiveIterators()
57 MutexLocker locker(activeIteratorCountMutex());
58 ASSERT(!m_activeIteratorCount);
62 EventListenerMap::EventListenerMap()
64 : m_activeIteratorCount(0)
69 bool EventListenerMap::contains(const AtomicString& eventType) const
71 for (unsigned i = 0; i < m_entries.size(); ++i) {
72 if (m_entries[i].first == eventType)
78 bool EventListenerMap::containsCapturing(const AtomicString& eventType) const
80 for (unsigned i = 0; i < m_entries.size(); ++i) {
81 if (m_entries[i].first == eventType) {
82 const EventListenerVector* vector = m_entries[i].second.get();
83 for (unsigned j = 0; j < vector->size(); ++j) {
84 if (vector->at(j).useCapture)
92 void EventListenerMap::clear()
94 assertNoActiveIterators();
99 Vector<AtomicString> EventListenerMap::eventTypes() const
101 Vector<AtomicString> types;
102 types.reserveInitialCapacity(m_entries.size());
104 for (unsigned i = 0; i < m_entries.size(); ++i)
105 types.uncheckedAppend(m_entries[i].first);
110 static bool addListenerToVector(EventListenerVector* vector, PassRefPtr<EventListener> listener, bool useCapture)
112 RegisteredEventListener registeredListener(listener, useCapture);
114 if (vector->find(registeredListener) != kNotFound)
115 return false; // Duplicate listener.
117 vector->append(registeredListener);
121 bool EventListenerMap::add(const AtomicString& eventType, PassRefPtr<EventListener> listener, bool useCapture)
123 assertNoActiveIterators();
125 for (unsigned i = 0; i < m_entries.size(); ++i) {
126 if (m_entries[i].first == eventType)
127 return addListenerToVector(m_entries[i].second.get(), listener, useCapture);
130 m_entries.append(std::make_pair(eventType, adoptPtr(new EventListenerVector)));
131 return addListenerToVector(m_entries.last().second.get(), listener, useCapture);
134 static bool removeListenerFromVector(EventListenerVector* listenerVector, EventListener* listener, bool useCapture, size_t& indexOfRemovedListener)
136 RegisteredEventListener registeredListener(listener, useCapture);
137 indexOfRemovedListener = listenerVector->find(registeredListener);
138 if (indexOfRemovedListener == kNotFound)
140 listenerVector->remove(indexOfRemovedListener);
144 bool EventListenerMap::remove(const AtomicString& eventType, EventListener* listener, bool useCapture, size_t& indexOfRemovedListener)
146 assertNoActiveIterators();
148 for (unsigned i = 0; i < m_entries.size(); ++i) {
149 if (m_entries[i].first == eventType) {
150 bool wasRemoved = removeListenerFromVector(m_entries[i].second.get(), listener, useCapture, indexOfRemovedListener);
151 if (m_entries[i].second->isEmpty())
160 EventListenerVector* EventListenerMap::find(const AtomicString& eventType)
162 assertNoActiveIterators();
164 for (unsigned i = 0; i < m_entries.size(); ++i) {
165 if (m_entries[i].first == eventType)
166 return m_entries[i].second.get();
172 static void removeFirstListenerCreatedFromMarkup(EventListenerVector* listenerVector)
174 bool foundListener = false;
176 for (size_t i = 0; i < listenerVector->size(); ++i) {
177 if (!listenerVector->at(i).listener->wasCreatedFromMarkup())
179 foundListener = true;
180 listenerVector->remove(i);
184 ASSERT_UNUSED(foundListener, foundListener);
187 void EventListenerMap::removeFirstEventListenerCreatedFromMarkup(const AtomicString& eventType)
189 assertNoActiveIterators();
191 for (unsigned i = 0; i < m_entries.size(); ++i) {
192 if (m_entries[i].first == eventType) {
193 removeFirstListenerCreatedFromMarkup(m_entries[i].second.get());
194 if (m_entries[i].second->isEmpty())
201 static void copyListenersNotCreatedFromMarkupToTarget(const AtomicString& eventType, EventListenerVector* listenerVector, EventTarget* target)
203 for (const auto& eventListener : *listenerVector) {
204 // Event listeners created from markup have already been transfered to the shadow tree during cloning.
205 if (eventListener.listener->wasCreatedFromMarkup())
207 target->addEventListener(eventType, eventListener.listener, eventListener.useCapture);
211 void EventListenerMap::copyEventListenersNotCreatedFromMarkupToTarget(EventTarget* target)
213 assertNoActiveIterators();
215 for (const auto& eventListener : m_entries)
216 copyListenersNotCreatedFromMarkupToTarget(eventListener.first, eventListener.second.get(), target);
219 EventListenerIterator::EventListenerIterator()
226 EventListenerIterator::EventListenerIterator(EventTarget* target)
232 EventTargetData* data = target->eventTargetData();
237 m_map = &data->eventListenerMap;
241 MutexLocker locker(activeIteratorCountMutex());
242 m_map->m_activeIteratorCount++;
248 EventListenerIterator::~EventListenerIterator()
251 MutexLocker locker(activeIteratorCountMutex());
252 m_map->m_activeIteratorCount--;
257 EventListener* EventListenerIterator::nextListener()
262 for (; m_entryIndex < m_map->m_entries.size(); ++m_entryIndex) {
263 EventListenerVector& listeners = *m_map->m_entries[m_entryIndex].second;
264 if (m_index < listeners.size())
265 return listeners[m_index++].listener.get();