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 /* This file is part of the KDE libraries
     Copyright (C) 2001,2002,2003,2004,2005,2006 Ian Reinhart Geiser <geiseri@kde.org>
     Copyright (C) 2001,2002,2003,2004,2005,2006 Matt Broadstone <mbroadst@gmail.com>
     Copyright (C) 2001,2002,2003,2004,2005,2006 Richard J. Moore <rich@kde.org>
     Copyright (C) 2001,2002,2003,2004,2005,2006 Erik L. Bunce <kde@bunce.us>
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Library General Public License for more details.
 
     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.
 */
 
 #ifndef JSEVENTMAPPER_H
 #define JSEVENTMAPPER_H
 
 #include <QHash>
 #include <QEvent>
 
 #include <kjs/identifier.h>
 
 namespace KJSEmbed
 {
 
 /**
 * Maintains a map between the types of QEvent and the names of their event
 * handlers.  This class handles all of the built in Qt events. To add your own custom events you can simply
 * call mapper()->addEvent(KJS::Identifier("onMyCustomEvent"), QEvent::User + 1).  Then in your javascript
 * you can just do the following:
 * @code
 * var myQObject = new QObjectBinding(this);
 * myQObject.onMyCustomEvent = function () { //do stuff ;}
 * @endcode
 *
 * In cases where you need to handle properties on your custom event, you will need to provide a binding to
 * that event and KJSEmbed will create an instance of it for you as the argument in your event handler.
 * @author Richard Moore, rich@kde.org
 * @author Ian Reinhart Geiser, geiseri@kde.org
 */
 class JSEventMapper
 {
 public:
     virtual ~JSEventMapper();
 
     /**
     * Adds an event to the map. The event handler has the specified name, and
     * the event has the specified type.
     */
     void addEvent(const KJS::Identifier &name, QEvent::Type t);
 
     /** Returns true iff the specified name is the identifier for an event handler. */
     bool isEventHandler(const KJS::Identifier &name) const;
 
     /** Returns the type of the events handled by the specified handler. */
     QEvent::Type findEventType(const KJS::Identifier &name) const;
 
     /** Returns the name of the handler method for the specified event type. */
     KJS::Identifier findEventHandler(QEvent::Type t) const;
 
     /**
     * Return the global event mapper.
     */
     static JSEventMapper *mapper();
 
 private:
     JSEventMapper();
     static JSEventMapper *m_inst;
     QHash<QString, QEvent::Type> m_handlerToEvent;
     QHash<int, KJS::Identifier> m_eventToHandler;
 };
 
 } // namespace KJSEmbed
 
 #endif // JSEVENTMAPPER_H