Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 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 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 | #include "config.h" |
| 34 | #include "core/dom/EventListenerMap.h" |
| 35 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 36 | #include "core/dom/EventTarget.h" |
Ben Murdoch | 591b958 | 2013-07-10 11:41:44 +0100 | [diff] [blame] | 37 | #include "wtf/StdLibExtras.h" |
| 38 | #include "wtf/Vector.h" |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 39 | |
| 40 | #ifndef NDEBUG |
Ben Murdoch | 591b958 | 2013-07-10 11:41:44 +0100 | [diff] [blame] | 41 | #include "wtf/Threading.h" |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 42 | #endif |
| 43 | |
| 44 | using namespace WTF; |
| 45 | |
| 46 | namespace WebCore { |
| 47 | |
| 48 | #ifndef NDEBUG |
| 49 | static Mutex& activeIteratorCountMutex() |
| 50 | { |
| 51 | DEFINE_STATIC_LOCAL(Mutex, mutex, ()); |
| 52 | return mutex; |
| 53 | } |
| 54 | |
| 55 | void EventListenerMap::assertNoActiveIterators() |
| 56 | { |
| 57 | MutexLocker locker(activeIteratorCountMutex()); |
| 58 | ASSERT(!m_activeIteratorCount); |
| 59 | } |
| 60 | #endif |
| 61 | |
| 62 | EventListenerMap::EventListenerMap() |
| 63 | #ifndef NDEBUG |
| 64 | : m_activeIteratorCount(0) |
| 65 | #endif |
| 66 | { |
| 67 | } |
| 68 | |
| 69 | bool EventListenerMap::contains(const AtomicString& eventType) const |
| 70 | { |
| 71 | for (unsigned i = 0; i < m_entries.size(); ++i) { |
| 72 | if (m_entries[i].first == eventType) |
| 73 | return true; |
| 74 | } |
| 75 | return false; |
| 76 | } |
| 77 | |
Ben Murdoch | e69819b | 2013-07-17 14:56:49 +0100 | [diff] [blame] | 78 | bool EventListenerMap::containsCapturing(const AtomicString& eventType) const |
| 79 | { |
| 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) |
| 85 | return true; |
| 86 | } |
| 87 | } |
| 88 | } |
| 89 | return false; |
| 90 | } |
| 91 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 92 | void EventListenerMap::clear() |
| 93 | { |
| 94 | assertNoActiveIterators(); |
| 95 | |
| 96 | m_entries.clear(); |
| 97 | } |
| 98 | |
| 99 | Vector<AtomicString> EventListenerMap::eventTypes() const |
| 100 | { |
| 101 | Vector<AtomicString> types; |
| 102 | types.reserveInitialCapacity(m_entries.size()); |
| 103 | |
| 104 | for (unsigned i = 0; i < m_entries.size(); ++i) |
| 105 | types.uncheckedAppend(m_entries[i].first); |
| 106 | |
| 107 | return types; |
| 108 | } |
| 109 | |
| 110 | static bool addListenerToVector(EventListenerVector* vector, PassRefPtr<EventListener> listener, bool useCapture) |
| 111 | { |
| 112 | RegisteredEventListener registeredListener(listener, useCapture); |
| 113 | |
| 114 | if (vector->find(registeredListener) != notFound) |
| 115 | return false; // Duplicate listener. |
| 116 | |
| 117 | vector->append(registeredListener); |
| 118 | return true; |
| 119 | } |
| 120 | |
| 121 | bool EventListenerMap::add(const AtomicString& eventType, PassRefPtr<EventListener> listener, bool useCapture) |
| 122 | { |
| 123 | assertNoActiveIterators(); |
| 124 | |
| 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); |
| 128 | } |
| 129 | |
| 130 | m_entries.append(std::make_pair(eventType, adoptPtr(new EventListenerVector))); |
| 131 | return addListenerToVector(m_entries.last().second.get(), listener, useCapture); |
| 132 | } |
| 133 | |
| 134 | static bool removeListenerFromVector(EventListenerVector* listenerVector, EventListener* listener, bool useCapture, size_t& indexOfRemovedListener) |
| 135 | { |
| 136 | RegisteredEventListener registeredListener(listener, useCapture); |
| 137 | indexOfRemovedListener = listenerVector->find(registeredListener); |
| 138 | if (indexOfRemovedListener == notFound) |
| 139 | return false; |
| 140 | listenerVector->remove(indexOfRemovedListener); |
| 141 | return true; |
| 142 | } |
| 143 | |
| 144 | bool EventListenerMap::remove(const AtomicString& eventType, EventListener* listener, bool useCapture, size_t& indexOfRemovedListener) |
| 145 | { |
| 146 | assertNoActiveIterators(); |
| 147 | |
| 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()) |
| 152 | m_entries.remove(i); |
| 153 | return wasRemoved; |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | return false; |
| 158 | } |
| 159 | |
| 160 | EventListenerVector* EventListenerMap::find(const AtomicString& eventType) |
| 161 | { |
| 162 | assertNoActiveIterators(); |
| 163 | |
| 164 | for (unsigned i = 0; i < m_entries.size(); ++i) { |
| 165 | if (m_entries[i].first == eventType) |
| 166 | return m_entries[i].second.get(); |
| 167 | } |
| 168 | |
| 169 | return 0; |
| 170 | } |
| 171 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 172 | static void removeFirstListenerCreatedFromMarkup(EventListenerVector* listenerVector) |
| 173 | { |
| 174 | bool foundListener = false; |
| 175 | |
| 176 | for (size_t i = 0; i < listenerVector->size(); ++i) { |
| 177 | if (!listenerVector->at(i).listener->wasCreatedFromMarkup()) |
| 178 | continue; |
| 179 | foundListener = true; |
| 180 | listenerVector->remove(i); |
| 181 | break; |
| 182 | } |
| 183 | |
| 184 | ASSERT_UNUSED(foundListener, foundListener); |
| 185 | } |
| 186 | |
| 187 | void EventListenerMap::removeFirstEventListenerCreatedFromMarkup(const AtomicString& eventType) |
| 188 | { |
| 189 | assertNoActiveIterators(); |
| 190 | |
| 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()) |
| 195 | m_entries.remove(i); |
| 196 | return; |
| 197 | } |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | static void copyListenersNotCreatedFromMarkupToTarget(const AtomicString& eventType, EventListenerVector* listenerVector, EventTarget* target) |
| 202 | { |
| 203 | for (size_t i = 0; i < listenerVector->size(); ++i) { |
| 204 | // Event listeners created from markup have already been transfered to the shadow tree during cloning. |
| 205 | if ((*listenerVector)[i].listener->wasCreatedFromMarkup()) |
| 206 | continue; |
| 207 | target->addEventListener(eventType, (*listenerVector)[i].listener, (*listenerVector)[i].useCapture); |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | void EventListenerMap::copyEventListenersNotCreatedFromMarkupToTarget(EventTarget* target) |
| 212 | { |
| 213 | assertNoActiveIterators(); |
| 214 | |
| 215 | for (unsigned i = 0; i < m_entries.size(); ++i) |
| 216 | copyListenersNotCreatedFromMarkupToTarget(m_entries[i].first, m_entries[i].second.get(), target); |
| 217 | } |
| 218 | |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 219 | EventListenerIterator::EventListenerIterator() |
| 220 | : m_map(0) |
| 221 | , m_entryIndex(0) |
| 222 | , m_index(0) |
| 223 | { |
| 224 | } |
| 225 | |
| 226 | EventListenerIterator::EventListenerIterator(EventTarget* target) |
| 227 | : m_map(0) |
| 228 | , m_entryIndex(0) |
| 229 | , m_index(0) |
| 230 | { |
| 231 | ASSERT(target); |
| 232 | EventTargetData* data = target->eventTargetData(); |
| 233 | |
| 234 | if (!data) |
| 235 | return; |
| 236 | |
| 237 | m_map = &data->eventListenerMap; |
| 238 | |
| 239 | #ifndef NDEBUG |
| 240 | { |
| 241 | MutexLocker locker(activeIteratorCountMutex()); |
| 242 | m_map->m_activeIteratorCount++; |
| 243 | } |
| 244 | #endif |
| 245 | } |
| 246 | |
| 247 | #ifndef NDEBUG |
| 248 | EventListenerIterator::~EventListenerIterator() |
| 249 | { |
| 250 | if (m_map) { |
| 251 | MutexLocker locker(activeIteratorCountMutex()); |
| 252 | m_map->m_activeIteratorCount--; |
| 253 | } |
| 254 | } |
| 255 | #endif |
| 256 | |
| 257 | EventListener* EventListenerIterator::nextListener() |
| 258 | { |
| 259 | if (!m_map) |
| 260 | return 0; |
| 261 | |
| 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(); |
| 266 | m_index = 0; |
| 267 | } |
| 268 | |
| 269 | return 0; |
| 270 | } |
| 271 | |
| 272 | } // namespace WebCore |