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tdepim/korganizer/history.cpp

296 lines
6.9 KiB

/*
This file is part of KOrganizer.
Copyright (c) 2003 Cornelius Schumacher <schumacher@kde.org>
Copyright (C) 2003-2004 Reinhold Kainhofer <reinhold@kainhofer.com>
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.
*/
#include "history.h"
#include <libkcal/calendar.h>
#include <libkcal/incidence.h>
#include <klocale.h>
#include <kdebug.h>
using namespace KCal;
using namespace KOrg;
History::History( KCal::Calendar *calendar )
: mCalendar( calendar ), mCurrentMultiEntry( 0 ),
mUndoEntry( mEntries ), mRedoEntry( mEntries )
{
mEntries.setAutoDelete( true );
}
void History::undo()
{
if ( mCurrentMultiEntry ) mCurrentMultiEntry = 0;
Entry *entry = mUndoEntry.current();
if ( !entry ) return;
entry->undo();
emit undone();
emit redoAvailable( entry->text() );
mRedoEntry = mUndoEntry;
--mUndoEntry;
entry = mUndoEntry.current();
if ( entry ) emit undoAvailable( entry->text() );
else emit undoAvailable( TQString::null );
}
void History::redo()
{
if ( mCurrentMultiEntry ) mCurrentMultiEntry = 0;
Entry *entry = mRedoEntry.current();
if ( !entry ) return;
emit undoAvailable( entry->text() );
entry->redo();
emit redone();
mUndoEntry = mRedoEntry;
++mRedoEntry;
entry = mRedoEntry.current();
if ( entry ) emit redoAvailable( entry->text() );
else emit redoAvailable( TQString::null );
}
void History::truncate()
{
while ( mUndoEntry.current() != mEntries.last() ) {
mEntries.removeLast();
}
mRedoEntry = TQPtrList<Entry>( mEntries );
emit redoAvailable( TQString::null );
}
void History::recordDelete( Incidence *incidence )
{
Entry *entry = new EntryDelete( mCalendar, incidence );
if (mCurrentMultiEntry) {
mCurrentMultiEntry->appendEntry( entry );
} else {
truncate();
mEntries.append( entry );
mUndoEntry.toLast();
mRedoEntry = TQPtrList<Entry>( mEntries );
emit undoAvailable( entry->text() );
}
}
void History::recordAdd( Incidence *incidence )
{
Entry *entry = new EntryAdd( mCalendar, incidence );
if (mCurrentMultiEntry) {
mCurrentMultiEntry->appendEntry( entry );
} else {
truncate();
mEntries.append( entry );
mUndoEntry.toLast();
mRedoEntry = TQPtrList<Entry>( mEntries );
emit undoAvailable( entry->text() );
}
}
void History::recordEdit( Incidence *oldIncidence, Incidence *newIncidence )
{
Entry *entry = new EntryEdit( mCalendar, oldIncidence, newIncidence );
if (mCurrentMultiEntry) {
mCurrentMultiEntry->appendEntry( entry );
} else {
truncate();
mEntries.append( entry );
mUndoEntry.toLast();
mRedoEntry = TQPtrList<Entry>( mEntries );
emit undoAvailable( entry->text() );
}
}
void History::startMultiModify( const TQString &description )
{
if ( mCurrentMultiEntry ) {
endMultiModify();
}
mCurrentMultiEntry = new MultiEntry( mCalendar, description );
truncate();
mEntries.append( mCurrentMultiEntry );
mUndoEntry.toLast();
mRedoEntry = TQPtrList<Entry>( mEntries );
emit undoAvailable( mCurrentMultiEntry->text() );
}
void History::endMultiModify()
{
mCurrentMultiEntry = 0;
}
History::Entry::Entry( KCal::Calendar *calendar )
: mCalendar( calendar )
{
}
History::Entry::~Entry()
{
}
History::EntryDelete::EntryDelete( Calendar *calendar, Incidence *incidence )
: Entry( calendar ), mIncidence( incidence->clone() )
{
}
History::EntryDelete::~EntryDelete()
{
delete mIncidence;
}
void History::EntryDelete::undo()
{
// TODO: Use the proper resource instead of asking!
mCalendar->addIncidence( mIncidence->clone() );
}
void History::EntryDelete::redo()
{
Incidence *incidence = mCalendar->incidence( mIncidence->uid() );
mCalendar->deleteIncidence( incidence );
}
TQString History::EntryDelete::text()
{
return i18n("Delete %1").arg(mIncidence->type());
}
History::EntryAdd::EntryAdd( Calendar *calendar, Incidence *incidence )
: Entry( calendar ), mIncidence( incidence->clone() )
{
}
History::EntryAdd::~EntryAdd()
{
delete mIncidence;
}
void History::EntryAdd::undo()
{
Incidence *incidence = mCalendar->incidence( mIncidence->uid() );
if ( incidence )
mCalendar->deleteIncidence( incidence );
}
void History::EntryAdd::redo()
{
// TODO: User the proper resource instead of asking again
mCalendar->addIncidence( mIncidence->clone() );
}
TQString History::EntryAdd::text()
{
return i18n("Add %1").arg(mIncidence->type());
}
History::EntryEdit::EntryEdit( Calendar *calendar, Incidence *oldIncidence,
Incidence *newIncidence )
: Entry( calendar ), mOldIncidence( oldIncidence->clone() ),
mNewIncidence( newIncidence->clone() )
{
}
History::EntryEdit::~EntryEdit()
{
delete mOldIncidence;
delete mNewIncidence;
}
void History::EntryEdit::undo()
{
Incidence *incidence = mCalendar->incidence( mNewIncidence->uid() );
if ( incidence )
mCalendar->deleteIncidence( incidence );
// TODO: Use the proper resource instead of asking again
mCalendar->addIncidence( mOldIncidence->clone() );
}
void History::EntryEdit::redo()
{
Incidence *incidence = mCalendar->incidence( mOldIncidence->uid() );
if ( incidence )
mCalendar->deleteIncidence( incidence );
// TODO: Use the proper resource instead of asking again
mCalendar->addIncidence( mNewIncidence->clone() );
}
TQString History::EntryEdit::text()
{
return i18n("Edit %1").arg(mNewIncidence->type());
}
History::MultiEntry::MultiEntry( Calendar *calendar, const TQString &text )
: Entry( calendar ), mText( text )
{
mEntries.setAutoDelete( true );
}
History::MultiEntry::~MultiEntry()
{
}
void History::MultiEntry::appendEntry( Entry* entry )
{
mEntries.append( entry );
}
void History::MultiEntry::undo()
{
TQPtrListIterator<Entry> it( mEntries );
it.toLast();
Entry *entry;
while ( (entry = it.current()) != 0 ) {
--it;
entry->undo();
}
}
void History::MultiEntry::redo()
{
TQPtrListIterator<Entry> it( mEntries );
Entry *entry;
while ( (entry = it.current()) != 0 ) {
++it;
entry->redo();
}
}
TQString History::MultiEntry::text()
{
return mText;
}
#include "history.moc"