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 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 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 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 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 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
