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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/***************************************************************************
begin : Wed Sep 22 2004
copyright : (C) 2004 by Michael Pyne
email : michael.pyne@kdemail.net
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include <kdebug.h>
#include <klocale.h>
#include <kmessagebox.h>
#include <kaction.h>
#include <kapplication.h>
#include <tqfileinfo.h>
#include <tqdir.h>
#include "tagtransactionmanager.h"
#include "playlistitem.h"
#include "collectionlist.h"
#include "tag.h"
#include "actioncollection.h"
using ActionCollection::action;
TagTransactionManager *TagTransactionManager::m_manager = 0;
TagTransactionAtom::TagTransactionAtom() : m_item(0), m_tag(0)
{
action("edit_undo")->setEnabled(false);
}
TagTransactionAtom::TagTransactionAtom(const TagTransactionAtom &other) :
m_item(other.m_item), m_tag(other.m_tag)
{
other.m_tag = 0; // Only allow one owner
}
TagTransactionAtom::TagTransactionAtom(PlaylistItem *item, Tag *tag) :
m_item(item), m_tag(tag)
{
}
TagTransactionAtom::~TagTransactionAtom()
{
delete m_tag;
}
TagTransactionAtom &TagTransactionAtom::operator=(const TagTransactionAtom &other)
{
m_item = other.m_item;
m_tag = other.m_tag;
other.m_tag = 0; // Only allow one owner
return *this;
}
TagTransactionManager *TagTransactionManager::instance()
{
return m_manager;
}
void TagTransactionManager::changeTagOnItem(PlaylistItem *item, Tag *newTag)
{
if(!item) {
kdWarning(65432) << "Trying to change tag on null PlaylistItem.\n";
return;
}
// Save the CollectionListItem, as it is the most likely to survive long
// enough for the commit(). I should probably intercept the item deleted
// signals from CollectionList to ensure that the commit list and the
// playlists stay in sync.
m_list.append(TagTransactionAtom(item->collectionItem(), newTag));
}
Tag *TagTransactionManager::duplicateTag(const Tag *tag, const TQString &fileName)
{
Q_ASSERT(tag);
TQString name = fileName.isNull() ? tag->fileName() : fileName;
Tag *newTag = new Tag(*tag);
newTag->setFileName(name);
return newTag;
}
bool TagTransactionManager::commit()
{
m_undoList.clear();
bool result = processChangeList();
m_list.clear();
return result;
}
void TagTransactionManager::forget()
{
m_list.clear();
}
bool TagTransactionManager::undo()
{
kdDebug(65432) << "Undoing " << m_undoList.count() << " changes.\n";
forget(); // Scrap our old changes (although the list should be empty
// anyways.
bool result = processChangeList(true);
m_undoList.clear();
action("edit_undo")->setEnabled(false);
return result;
}
TagTransactionManager::TagTransactionManager(TQWidget *tqparent) : TQObject(tqparent, "tagmanager")
{
m_manager = this;
}
bool TagTransactionManager::renameFile(const TQFileInfo &from, const TQFileInfo &to) const
{
if(!TQFileInfo(to.dirPath()).isWritable() || !from.exists())
return false;
if(!to.exists() ||
KMessageBox::warningContinueCancel(
TQT_TQWIDGET(tqparent()),
i18n("This file already exists.\nDo you want to replace it?"),
i18n("File Exists"),i18n("Replace")) == KMessageBox::Continue)
{
kdDebug(65432) << "Renaming " << from.absFilePath() << " to " << to.absFilePath() << endl;
TQDir currentDir;
return currentDir.rename(from.absFilePath(), to.absFilePath());
}
return false;
}
bool TagTransactionManager::processChangeList(bool undo)
{
TagAlterationList::ConstIterator it, end;
TQStringList errorItems;
it = undo ? m_undoList.begin() : m_list.begin();
end = undo ? m_undoList.end() : m_list.end();
emit signalAboutToModifyTags();
for(; it != end; ++it) {
PlaylistItem *item = (*it).item();
Tag *tag = (*it).tag();
TQFileInfo newFile(tag->fileName());
if(item->file().fileInfo().fileName() != newFile.fileName()) {
if(!renameFile(item->file().fileInfo(), newFile)) {
errorItems.append(item->text(1) + TQString(" - ") + item->text(0));
continue;
}
}
if(tag->save()) {
if(!undo)
m_undoList.append(TagTransactionAtom(item, duplicateTag(item->file().tag())));
item->file().setFile(tag->fileName());
item->refreshFromDisk();
item->tqrepaint();
item->playlist()->dataChanged();
item->playlist()->update();
}
else {
Tag *errorTag = item->file().tag();
TQString str = errorTag->artist() + " - " + errorTag->title();
if(errorTag->artist().isEmpty())
str = errorTag->title();
errorItems.append(str);
}
kapp->processEvents();
}
undo ? m_undoList.clear() : m_list.clear();
if(!undo && !m_undoList.isEmpty())
action("edit_undo")->setEnabled(true);
else
action("edit_undo")->setEnabled(false);
if(!errorItems.isEmpty())
KMessageBox::errorList(TQT_TQWIDGET(tqparent()),
i18n("The following files were unable to be changed."),
errorItems,
i18n("Error"));
emit signalDoneModifyingTags();
return errorItems.isEmpty();
}
#include "tagtransactionmanager.moc"
// vim: set et ts=4 sw=4 tw=0:
|
