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1/*
2 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
3 * Copyright (C) 2006 James G. Speth (speth@end.com)
4 * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#import "config.h"
29#import "ObjCEventListener.h"
30
31#import "DOMEventInternal.h"
32#import "DOMEventListener.h"
33#import "Event.h"
34#import "EventListener.h"
35#import <wtf/HashMap.h>
36
37namespace WebCore {
38
39typedef HashMap<id, ObjCEventListener*> ListenerMap;
40static ListenerMap* listenerMap;
41
42ObjCEventListener* ObjCEventListener::find(id <DOMEventListener> listener)
43{
44    ListenerMap* map = listenerMap;
45    if (!map)
46        return 0;
47    return map->get(listener);
48}
49
50PassRefPtr<ObjCEventListener> ObjCEventListener::wrap(id <DOMEventListener> listener)
51{
52    RefPtr<ObjCEventListener> wrapper = find(listener);
53    if (wrapper)
54        return wrapper;
55    return adoptRef(new ObjCEventListener(listener));
56}
57
58ObjCEventListener::ObjCEventListener(id <DOMEventListener> listener)
59    : EventListener(ObjCEventListenerType)
60    , m_listener([listener retain])
61{
62    ListenerMap* map = listenerMap;
63    if (!map) {
64        map = new ListenerMap;
65        listenerMap = map;
66    }
67    map->set(listener, this);
68}
69
70ObjCEventListener::~ObjCEventListener()
71{
72    listenerMap->remove(m_listener);
73    [m_listener release];
74}
75
76void ObjCEventListener::handleEvent(ScriptExecutionContext*, Event* event)
77{
78    [m_listener handleEvent:kit(event)];
79}
80
81bool ObjCEventListener::operator==(const EventListener& listener)
82{
83    if (const ObjCEventListener* objCEventListener = ObjCEventListener::cast(&listener))
84        return m_listener == objCEventListener->m_listener;
85    return false;
86}
87
88} // namespace WebCore
89