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/*
This file is part of KMail
Copyright (C) 1999 Waldo Bastian (bastian@kde.org)
Copyright (c) 2003 Zack Rusin <zack@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.
This software 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 library; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "undostack.h"
#include "kmmainwin.h"
#include "kmfolder.h"
#include "kmmsgdict.h"
#include <kmessagebox.h>
#include <klocale.h>
#include <kdebug.h>
namespace KMail {
UndoStack::UndoStack(int size)
: QObject(0, "undostack"), mSize(size), mLastId(0),
mCachedInfo(0)
{
mStack.setAutoDelete(true);
}
void UndoStack::clear()
{
mStack.clear();
}
int UndoStack::newUndoAction( KMFolder *srcFolder, KMFolder *destFolder )
{
UndoInfo *info = new UndoInfo;
info->id = ++mLastId;
info->srcFolder = srcFolder;
info->destFolder = destFolder;
if ((int) mStack.count() == mSize)
mStack.removeLast();
mStack.prepend( info );
emit undoStackChanged();
return info->id;
}
void UndoStack::addMsgToAction( int undoId, ulong serNum )
{
if ( !mCachedInfo || mCachedInfo->id != undoId ) {
QPtrListIterator<UndoInfo> itr( mStack );
while ( itr.current() ) {
if ( itr.current()->id == undoId ) {
mCachedInfo = itr.current();
break;
}
++itr;
}
}
Q_ASSERT( mCachedInfo );
mCachedInfo->serNums.append( serNum );
}
void UndoStack::undo()
{
KMMessage *msg;
ulong serNum;
int idx = -1;
KMFolder *curFolder;
if ( mStack.count() > 0 )
{
UndoInfo *info = mStack.take(0);
emit undoStackChanged();
QValueList<ulong>::iterator itr;
KMFolderOpener openDestFolder(info->destFolder, "undodest");
for( itr = info->serNums.begin(); itr != info->serNums.end(); ++itr ) {
serNum = *itr;
KMMsgDict::instance()->getLocation(serNum, &curFolder, &idx);
if ( idx == -1 || curFolder != info->destFolder ) {
kdDebug(5006)<<"Serious undo error!"<<endl;
delete info;
return;
}
msg = curFolder->getMsg( idx );
info->srcFolder->moveMsg( msg );
if ( info->srcFolder->count() > 1 )
info->srcFolder->unGetMsg( info->srcFolder->count() - 1 );
}
delete info;
}
else
{
// Sorry.. stack is empty..
KMessageBox::sorry( kmkernel->mainWin(), i18n("There is nothing to undo."));
}
}
void
UndoStack::pushSingleAction(ulong serNum, KMFolder *folder, KMFolder *destFolder)
{
int id = newUndoAction( folder, destFolder );
addMsgToAction( id, serNum );
}
void
UndoStack::msgDestroyed( KMMsgBase* /*msg*/)
{
/*
for(UndoInfo *info = mStack.first(); info; )
{
if (info->msgIdMD5 == msg->msgIdMD5())
{
mStack.removeRef( info );
info = mStack.current();
}
else
info = mStack.next();
}
*/
}
void
UndoStack::folderDestroyed( KMFolder *folder)
{
for( UndoInfo *info = mStack.first(); info; )
{
if ( (info->srcFolder == folder) ||
(info->destFolder == folder) )
{
mStack.removeRef( info );
info = mStack.current();
}
else
info = mStack.next();
}
emit undoStackChanged();
}
}
#include "undostack.moc"
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