kmail

rulewidgethandlermanager.h

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00001 /*  -*- mode: C++; c-file-style: "gnu" -*-
00002     rulewidgethandlermanager.h
00003 
00004     This file is part of KMail, the KDE mail client.
00005     Copyright (c) 2004 Ingo Kloecker <kloecker@kde.org>
00006 
00007     KMail is free software; you can redistribute it and/or modify
00008     it under the terms of the GNU General Public License as published by
00009     the Free Software Foundation; either version 2 of the License, or
00010     (at your option) any later version.
00011 
00012     KMail is distributed in the hope that it will be useful, but
00013     WITHOUT ANY WARRANTY; without even the implied warranty of
00014     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015     GNU General Public License for more details.
00016 
00017     You should have received a copy of the GNU General Public License
00018     along with this program; if not, write to the Free Software
00019     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
00020 
00021     In addition, as a special exception, the copyright holders give
00022     permission to link the code of this program with any edition of
00023     the Qt library by Trolltech AS, Norway (or with modified versions
00024     of Qt that use the same license as Qt), and distribute linked
00025     combinations including the two.  You must obey the GNU General
00026     Public License in all respects for all of the code used other than
00027     Qt.  If you modify this file, you may extend this exception to
00028     your version of the file, but you are not obligated to do so.  If
00029     you do not wish to do so, delete this exception statement from
00030     your version.
00031 */
00032 
00033 #ifndef __KMAIL_RULEWIDGETHANDLERMANAGER_H__
00034 #define __KMAIL_RULEWIDGETHANDLERMANAGER_H__
00035 
00036 #include "kmsearchpattern.h"
00037 
00038 #include <qvaluevector.h>
00039 
00040 class QObject;
00041 class QCString;
00042 class QString;
00043 class QWidgetStack;
00044 
00045 namespace KMail {
00046 
00047   class RuleWidgetHandler;
00048 
00052   class RuleWidgetHandlerManager {
00053     static RuleWidgetHandlerManager * self;
00054 
00055     RuleWidgetHandlerManager();
00056   public:
00057     ~RuleWidgetHandlerManager();
00058 
00059     static RuleWidgetHandlerManager * instance() {
00060       if ( !self )
00061     self = new RuleWidgetHandlerManager();
00062       return self;
00063     }
00064 
00065     void registerHandler( const RuleWidgetHandler * handler );
00066     void unregisterHandler( const RuleWidgetHandler * handler );
00067 
00068     void createWidgets( QWidgetStack *functionStack,
00069                         QWidgetStack *valueStack,
00070                         const QObject *receiver ) const;
00071     KMSearchRule::Function function( const QCString & field,
00072                                      const QWidgetStack *functionStack ) const;
00073     QString value( const QCString & field,
00074                    const QWidgetStack *functionStack,
00075                    const QWidgetStack *valueStack ) const;
00076     QString prettyValue( const QCString & field,
00077                          const QWidgetStack *functionStack,
00078                          const QWidgetStack *valueStack ) const;
00079     bool handlesField( const QCString & field,
00080                        const QWidgetStack *functionStack,
00081                        const QWidgetStack *valueStack ) const;
00082     void reset( QWidgetStack *functionStack,
00083                 QWidgetStack *valueStack ) const;
00084     void setRule( QWidgetStack *functionStack,
00085                   QWidgetStack *valueStack,
00086                   const KMSearchRule *rule ) const;
00087     void update( const QCString & field,
00088                  QWidgetStack *functionStack,
00089                  QWidgetStack *valueStack ) const;
00090 
00091   private:
00092     typedef QValueVector<const RuleWidgetHandler*>::const_iterator const_iterator;
00093     typedef QValueVector<const RuleWidgetHandler*>::iterator iterator;
00094 
00095     QValueVector<const RuleWidgetHandler*> mHandlers;
00096   };
00097 
00098 } // namespace KMail
00099 
00100 #endif // __KMAIL_RULEWIDGETHANDLERMANAGER_H__