Home | History | Annotate | Download | only in objc 
      1 /*
      2  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
      3  * Copyright (C) 2006 James G. Speth (speth (at) end.com)
      4  * Copyright (C) 2006 Samuel Weinig (sam.weinig (at) 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 
     37 namespace WebCore {
     38 
     39 typedef HashMap<id, ObjCEventListener*> ListenerMap;
     40 static ListenerMap* listenerMap;
     41 
     42 ObjCEventListener* ObjCEventListener::find(id <DOMEventListener> listener)
     43 {
     44     ListenerMap* map = listenerMap;
     45     if (!map)
     46         return 0;
     47     return map->get(listener);
     48 }
     49 
     50 PassRefPtr<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 
     58 ObjCEventListener::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 
     70 ObjCEventListener::~ObjCEventListener()
     71 {
     72     listenerMap->remove(m_listener);
     73     [m_listener release];
     74 }
     75 
     76 void ObjCEventListener::handleEvent(ScriptExecutionContext*, Event* event)
     77 {
     78     [m_listener handleEvent:kit(event)];
     79 }
     80 
     81 bool 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