1 /*
2 * Copyright (C) 2010, 2011 Igalia S.L.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include "config.h"
20 #include "GObjectEventListener.h"
21
22 #include "Event.h"
23 #include "EventListener.h"
24 #include "webkit/WebKitDOMEvent.h"
25 #include "webkit/WebKitDOMEventPrivate.h"
26 #include <glib-object.h>
27 #include <glib.h>
28 #include <wtf/HashMap.h>
29
30 namespace WebCore {
31
32 typedef void (*GObjectEventListenerCallback)(GObject*, WebKitDOMEvent*, void*);
33
GObjectEventListener(GObject * object,EventTarget * target,const char * domEventName,GCallback handler,bool capture,void * userData)34 GObjectEventListener::GObjectEventListener(GObject* object, EventTarget* target, const char* domEventName, GCallback handler, bool capture, void* userData)
35 : EventListener(GObjectEventListenerType)
36 , m_object(object)
37 , m_coreTarget(target)
38 , m_domEventName(domEventName)
39 , m_handler(handler)
40 , m_capture(capture)
41 , m_userData(userData)
42 {
43 ASSERT(m_coreTarget);
44 g_object_weak_ref(object, reinterpret_cast<GWeakNotify>(GObjectEventListener::gobjectDestroyedCallback), this);
45 }
46
~GObjectEventListener()47 GObjectEventListener::~GObjectEventListener()
48 {
49 if (!m_coreTarget)
50 return;
51 g_object_weak_unref(m_object, reinterpret_cast<GWeakNotify>(GObjectEventListener::gobjectDestroyedCallback), this);
52 }
53
gobjectDestroyed()54 void GObjectEventListener::gobjectDestroyed()
55 {
56 ASSERT(m_coreTarget);
57
58 // We must set m_coreTarget to null, because removeEventListener
59 // may call the destructor as a side effect and we must be in the
60 // proper state to prevent g_object_weak_unref.
61 EventTarget* target = m_coreTarget;
62 m_coreTarget = 0;
63 target->removeEventListener(m_domEventName.data(), this, m_capture);
64 }
65
handleEvent(ScriptExecutionContext *,Event * event)66 void GObjectEventListener::handleEvent(ScriptExecutionContext*, Event* event)
67 {
68 WebKitDOMEvent* gobjectEvent = WEBKIT_DOM_EVENT(WebKit::kit(event));
69 reinterpret_cast<GObjectEventListenerCallback>(m_handler)(m_object, gobjectEvent, m_userData);
70 g_object_unref(gobjectEvent);
71 }
72
operator ==(const EventListener & listener)73 bool GObjectEventListener::operator==(const EventListener& listener)
74 {
75 if (const GObjectEventListener* gobjectEventListener = GObjectEventListener::cast(&listener))
76 return m_object == gobjectEventListener->m_object && m_handler == gobjectEventListener->m_handler;
77
78 return false;
79 }
80
81 }
82