history.h
00001 /* 00002 This file is part of KOrganizer. 00003 00004 Copyright (c) 2003 Cornelius Schumacher <schumacher@kde.org> 00005 00006 This program is free software; you can redistribute it and/or modify 00007 it under the terms of the GNU General Public License as published by 00008 the Free Software Foundation; either version 2 of the License, or 00009 (at your option) any later version. 00010 00011 This program is distributed in the hope that it will be useful, 00012 but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 GNU General Public License for more details. 00015 00016 You should have received a copy of the GNU General Public License 00017 along with this program; if not, write to the Free Software 00018 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 00019 00020 As a special exception, permission is given to link this program 00021 with any edition of TQt, and distribute the resulting executable, 00022 without including the source code for TQt in the source distribution. 00023 */ 00024 #ifndef KORG_HISTORY_H 00025 #define KORG_HISTORY_H 00026 00027 #include <tqobject.h> 00028 #include <tqptrlist.h> 00029 00030 namespace KCal { 00031 00032 class Calendar; 00033 class Incidence; 00034 00035 } 00036 00037 namespace KOrg { 00038 00039 class History : public TQObject 00040 { 00041 Q_OBJECT 00042 00043 public: 00044 History( KCal::Calendar * ); 00045 00046 void recordDelete( KCal::Incidence * ); 00047 void recordAdd( KCal::Incidence * ); 00048 void recordEdit( KCal::Incidence *oldIncidence, 00049 KCal::Incidence *newIncidence ); 00050 void startMultiModify( const TQString &description ); 00051 void endMultiModify(); 00052 00053 public slots: 00054 void undo(); 00055 void redo(); 00056 00057 signals: 00058 void undone(); 00059 void redone(); 00060 00061 void undoAvailable( const TQString & ); 00062 void redoAvailable( const TQString & ); 00063 00064 protected: 00065 void truncate(); 00066 00067 private: 00068 00069 class Entry 00070 { 00071 public: 00072 Entry( KCal::Calendar * ); 00073 virtual ~Entry(); 00074 00075 virtual void undo() = 0; 00076 virtual void redo() = 0; 00077 00078 virtual TQString text() = 0; 00079 00080 protected: 00081 KCal::Calendar *mCalendar; 00082 }; 00083 00084 class EntryDelete : public Entry 00085 { 00086 public: 00087 EntryDelete( KCal::Calendar *, KCal::Incidence * ); 00088 ~EntryDelete(); 00089 00090 void undo(); 00091 void redo(); 00092 00093 TQString text(); 00094 00095 private: 00096 KCal::Incidence *mIncidence; 00097 }; 00098 00099 class EntryAdd : public Entry 00100 { 00101 public: 00102 EntryAdd( KCal::Calendar *, KCal::Incidence * ); 00103 ~EntryAdd(); 00104 00105 void undo(); 00106 void redo(); 00107 00108 TQString text(); 00109 00110 private: 00111 KCal::Incidence *mIncidence; 00112 }; 00113 00114 class EntryEdit : public Entry 00115 { 00116 public: 00117 EntryEdit( KCal::Calendar *calendar, KCal::Incidence *oldIncidence, 00118 KCal::Incidence *newIncidence ); 00119 ~EntryEdit(); 00120 00121 void undo(); 00122 void redo(); 00123 00124 TQString text(); 00125 00126 private: 00127 KCal::Incidence *mOldIncidence; 00128 KCal::Incidence *mNewIncidence; 00129 }; 00130 00131 class MultiEntry : public Entry 00132 { 00133 public: 00134 MultiEntry( KCal::Calendar *calendar, const TQString &text ); 00135 ~MultiEntry(); 00136 00137 void appendEntry( Entry* entry ); 00138 void undo(); 00139 void redo(); 00140 00141 TQString text(); 00142 00143 private: 00144 TQPtrList<Entry> mEntries; 00145 TQString mText; 00146 }; 00147 00148 KCal::Calendar *mCalendar; 00149 MultiEntry *mCurrentMultiEntry; 00150 00151 TQPtrList<Entry> mEntries; 00152 TQPtrListIterator<Entry> mUndoEntry; 00153 TQPtrListIterator<Entry> mRedoEntry; 00154 }; 00155 00156 } 00157 #endif