summaryrefslogtreecommitdiffstats
path: root/kmail/undostack.cpp
blob: f1729f3a74cd97088db84d89244dc8fa679c310c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
/*
    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"