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 #ifndef GObjectEventListener_h 20 #define GObjectEventListener_h 21 22 #include "EventListener.h" 23 #include "EventTarget.h" 24 25 #include <wtf/RefPtr.h> 26 #include <wtf/text/CString.h> 27 28 typedef struct _GObject GObject; 29 typedef void (*GCallback) (void); 30 31 namespace WebCore { 32 33 class GObjectEventListener : public EventListener { 34 public: 35 36 static bool addEventListener(GObject* object, EventTarget* target, const char* domEventName, GCallback handler, bool useCapture, void* userData) 37 { 38 RefPtr<GObjectEventListener> listener(adoptRef(new GObjectEventListener(object, target, domEventName, handler, useCapture, userData))); 39 return target->addEventListener(domEventName, listener.release(), useCapture); 40 } 41 42 static bool removeEventListener(GObject* object, EventTarget* target, const char* domEventName, GCallback handler, bool useCapture) 43 { 44 GObjectEventListener key(object, target, domEventName, handler, useCapture, 0); 45 return target->removeEventListener(domEventName, &key, useCapture); 46 } 47 48 static void gobjectDestroyedCallback(GObjectEventListener* listener, GObject*) 49 { 50 listener->gobjectDestroyed(); 51 } 52 53 static const GObjectEventListener* cast(const EventListener* listener) 54 { 55 return listener->type() == GObjectEventListenerType 56 ? static_cast<const GObjectEventListener*>(listener) 57 : 0; 58 } 59 60 virtual bool operator==(const EventListener& other); 61 62 private: 63 GObjectEventListener(GObject*, EventTarget*, const char* domEventName, GCallback handler, bool capture, void* userData); 64 ~GObjectEventListener(); 65 void gobjectDestroyed(); 66 67 virtual void handleEvent(ScriptExecutionContext*, Event*); 68 69 GObject* m_object; 70 71 // We do not need to keep a reference to the m_coreTarget, because 72 // we only use it when the GObject and thus the m_coreTarget object is alive. 73 EventTarget* m_coreTarget; 74 CString m_domEventName; 75 GCallback m_handler; 76 bool m_capture; 77 void* m_userData; 78 }; 79 } // namespace WebCore 80 81 #endif 82
