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/*
This file is part of KOrganizer.
Copyright (c) 2003 Cornelius Schumacher <schumacher@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
As a special exception, permission is given to link this program
with any edition of Qt, and distribute the resulting executable,
without including the source code for Qt in the source distribution.
*/
#ifndef KORG_HISTORY_H
#define KORG_HISTORY_H
#include <tqobject.h>
#include <tqptrlist.h>
namespace KCal {
class Calendar;
class Incidence;
}
namespace KOrg {
class History : public QObject
{
Q_OBJECT
public:
History( KCal::Calendar * );
void recordDelete( KCal::Incidence * );
void recordAdd( KCal::Incidence * );
void recordEdit( KCal::Incidence *oldIncidence,
KCal::Incidence *newIncidence );
void startMultiModify( const TQString &description );
void endMultiModify();
public slots:
void undo();
void redo();
signals:
void undone();
void redone();
void undoAvailable( const TQString & );
void redoAvailable( const TQString & );
protected:
void truncate();
private:
class Entry
{
public:
Entry( KCal::Calendar * );
virtual ~Entry();
virtual void undo() = 0;
virtual void redo() = 0;
virtual TQString text() = 0;
protected:
KCal::Calendar *mCalendar;
};
class EntryDelete : public Entry
{
public:
EntryDelete( KCal::Calendar *, KCal::Incidence * );
~EntryDelete();
void undo();
void redo();
TQString text();
private:
KCal::Incidence *mIncidence;
};
class EntryAdd : public Entry
{
public:
EntryAdd( KCal::Calendar *, KCal::Incidence * );
~EntryAdd();
void undo();
void redo();
TQString text();
private:
KCal::Incidence *mIncidence;
};
class EntryEdit : public Entry
{
public:
EntryEdit( KCal::Calendar *calendar, KCal::Incidence *oldIncidence,
KCal::Incidence *newIncidence );
~EntryEdit();
void undo();
void redo();
TQString text();
private:
KCal::Incidence *mOldIncidence;
KCal::Incidence *mNewIncidence;
};
class MultiEntry : public Entry
{
public:
MultiEntry( KCal::Calendar *calendar, const TQString &text );
~MultiEntry();
void appendEntry( Entry* entry );
void undo();
void redo();
TQString text();
private:
TQPtrList<Entry> mEntries;
TQString mText;
};
KCal::Calendar *mCalendar;
MultiEntry *mCurrentMultiEntry;
TQPtrList<Entry> mEntries;
TQPtrListIterator<Entry> mUndoEntry;
TQPtrListIterator<Entry> mRedoEntry;
};
}
#endif
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