| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * (C) 2001 Dirk Mueller (mueller@kde.org) |
| * Copyright (C) 2004, 2005, 2006, 2007, 2012 Apple Inc. All rights reserved. |
| * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org) |
| * (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2011 Andreas Kling (kling@webkit.org) |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #ifndef EventListenerMap_h |
| #define EventListenerMap_h |
| |
| #include "core/CoreExport.h" |
| #include "core/events/AddEventListenerOptionsResolved.h" |
| #include "core/events/EventListenerOptions.h" |
| #include "core/events/RegisteredEventListener.h" |
| #include "wtf/Noncopyable.h" |
| #include "wtf/text/AtomicStringHash.h" |
| |
| namespace blink { |
| |
| class EventTarget; |
| |
| using EventListenerVector = HeapVector<RegisteredEventListener, 1>; |
| |
| class CORE_EXPORT EventListenerMap { |
| WTF_MAKE_NONCOPYABLE(EventListenerMap); |
| DISALLOW_NEW(); |
| public: |
| EventListenerMap(); |
| |
| bool isEmpty() const { return m_entries.isEmpty(); } |
| bool contains(const AtomicString& eventType) const; |
| bool containsCapturing(const AtomicString& eventType) const; |
| |
| void clear(); |
| bool add(const AtomicString& eventType, EventListener*, const AddEventListenerOptionsResolved&, RegisteredEventListener* registeredListener); |
| bool remove(const AtomicString& eventType, const EventListener*, const EventListenerOptions&, size_t* indexOfRemovedListener, RegisteredEventListener* registeredListener); |
| EventListenerVector* find(const AtomicString& eventType); |
| Vector<AtomicString> eventTypes() const; |
| |
| void copyEventListenersNotCreatedFromMarkupToTarget(EventTarget*); |
| |
| DECLARE_TRACE(); |
| |
| private: |
| friend class EventListenerIterator; |
| |
| void assertNoActiveIterators(); |
| |
| // We use HeapVector instead of HeapHashMap because |
| // - HeapVector is much more space efficient than HeapHashMap. |
| // - An EventTarget rarely has event listeners for many event types, and |
| // HeapVector is faster in such cases. |
| HeapVector<std::pair<AtomicString, Member<EventListenerVector>>, 2> m_entries; |
| |
| #if ENABLE(ASSERT) |
| int m_activeIteratorCount; |
| #endif |
| }; |
| |
| class EventListenerIterator { |
| WTF_MAKE_NONCOPYABLE(EventListenerIterator); |
| STACK_ALLOCATED(); |
| public: |
| explicit EventListenerIterator(EventTarget*); |
| #if ENABLE(ASSERT) |
| ~EventListenerIterator(); |
| #endif |
| |
| EventListener* nextListener(); |
| |
| private: |
| // This cannot be a Member because it is pointing to a part of object. |
| // TODO(haraken): Use Member<EventTarget> instead of EventListenerMap*. |
| EventListenerMap* m_map; |
| unsigned m_entryIndex; |
| unsigned m_index; |
| }; |
| |
| #if !ENABLE(ASSERT) |
| inline void EventListenerMap::assertNoActiveIterators() { } |
| #endif |
| |
| } // namespace blink |
| |
| #endif // EventListenerMap_h |