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akonadi

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  • calendar
calendarclipboard.cpp
1 /*
2  Copyright (C) 2012 Sérgio Martins <iamsergio@gmail.com>
3 
4  This library is free software; you can redistribute it and/or modify it
5  under the terms of the GNU Library General Public License as published by
6  the Free Software Foundation; either version 2 of the License, or (at your
7  option) any later version.
8 
9  This library is distributed in the hope that it will be useful, but WITHOUT
10  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
12  License for more details.
13 
14  You should have received a copy of the GNU Library General Public License
15  along with this library; see the file COPYING.LIB. If not, write to the
16  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17  02110-1301, USA.
18 */
19 
20 #include "calendarclipboard_p.h"
21 #include <kcalutils/dndfactory.h>
22 #include <kcalutils/icaldrag.h>
23 
24 #include <KLocale>
25 #include <KMessageBox>
26 
27 #include <QApplication>
28 #include <QClipboard>
29 
30 using namespace Akonadi;
31 
32 CalendarClipboard::Private::Private( const Akonadi::CalendarBase::Ptr &calendar,
33  Akonadi::IncidenceChanger *changer,
34  CalendarClipboard *qq ) : QObject( qq )
35  , m_calendar( calendar )
36  , m_changer( changer )
37  , m_abortCurrentOperation( false )
38  , q( qq )
39 {
40  Q_ASSERT( m_calendar );
41  if ( !m_changer ) {
42  m_changer = new Akonadi::IncidenceChanger( this );
43  m_changer->setHistoryEnabled( false );
44  m_changer->setGroupwareCommunication( false );
45  }
46 
47  m_dndfactory = new KCalUtils::DndFactory( m_calendar );
48 
49  connect( m_changer,
50  SIGNAL(modifyFinished(int,Akonadi::Item,Akonadi::IncidenceChanger::ResultCode,QString)),
51  SLOT(slotModifyFinished(int,Akonadi::Item,Akonadi::IncidenceChanger::ResultCode,QString)) );
52 
53  connect( m_changer,
54  SIGNAL(deleteFinished(int,QVector<Akonadi::Item::Id>,Akonadi::IncidenceChanger::ResultCode,QString)),
55  SLOT(slotDeleteFinished(int,QVector<Akonadi::Item::Id>,Akonadi::IncidenceChanger::ResultCode,QString)) );
56 }
57 
58 CalendarClipboard::Private::~Private()
59 {
60  delete m_dndfactory;
61 }
62 
63 void CalendarClipboard::Private::getIncidenceHierarchy( const KCalCore::Incidence::Ptr &incidence,
64  QStringList &uids )
65 {
66  // protecion against looping hierarchies
67  if ( incidence && !uids.contains( incidence->uid() ) ) {
68  KCalCore::Incidence::List immediateChildren = m_calendar->childIncidences( incidence->uid() );
69 
70  foreach( const KCalCore::Incidence::Ptr &child, immediateChildren ) {
71  getIncidenceHierarchy( child, uids );
72  }
73  uids.append( incidence->uid() );
74  }
75 }
76 
77 void CalendarClipboard::Private::cut( const KCalCore::Incidence::List &incidences )
78 {
79  const bool result = m_dndfactory->copyIncidences( incidences );
80  m_pendingChangeIds.clear();
81  // Note: Don't use DndFactory::cutIncidences(), it doesn't use IncidenceChanger for deletion
82  // we would loose async error handling and redo/undo features
83  if ( result ) {
84  Akonadi::Item::List items = m_calendar->itemList( incidences );
85  const int result = m_changer->deleteIncidences( items );
86  if ( result == -1 ) {
87  emit q->cutFinished( false, i18n( "Error performing deletion." ) );
88  } else {
89  m_pendingChangeIds << result;
90  }
91  } else {
92  emit q->cutFinished( false, i18n( "Error performing copy." ) );
93  }
94 }
95 
96 void CalendarClipboard::Private::cut( const KCalCore::Incidence::Ptr &incidence )
97 {
98  KCalCore::Incidence::List incidences;
99  incidences << incidence;
100  cut( incidences );
101 }
102 
103 void CalendarClipboard::Private::makeChildsIndependent( const KCalCore::Incidence::Ptr &incidence )
104 {
105  Q_ASSERT( incidence );
106  const KCalCore::Incidence::List childs = m_calendar->childIncidences( incidence->uid() );
107 
108  if ( childs.isEmpty() ) {
109  cut( incidence );
110  } else {
111  m_pendingChangeIds.clear();
112  m_abortCurrentOperation = false;
113  foreach( const KCalCore::Incidence::Ptr &child, childs ) {
114  Akonadi::Item childItem = m_calendar->item( incidence->uid() );
115  if ( !childItem.isValid() ) {
116  emit q->cutFinished( false, i18n( "Can't find item: %1", childItem.id() ) );
117  return;
118  }
119 
120  KCalCore::Incidence::Ptr newIncidence( child->clone() );
121  newIncidence->setRelatedTo( QString() );
122  childItem.setPayload<KCalCore::Incidence::Ptr>( newIncidence );
123  const int changeId = m_changer->modifyIncidence( childItem, /*originalPayload*/child );
124  if ( changeId == -1 ) {
125  m_abortCurrentOperation = true;
126  break;
127  } else {
128  m_pendingChangeIds << changeId;
129  }
130  }
131  if ( m_pendingChangeIds.isEmpty() && m_abortCurrentOperation ) {
132  emit q->cutFinished( false, i18n( "Error while removing relations." ) );
133  } // if m_pendingChangeIds isn't empty, we wait for all jobs to finish first.
134  }
135 }
136 
137 void CalendarClipboard::Private::slotModifyFinished( int changeId, const Akonadi::Item &item,
138  IncidenceChanger::ResultCode resultCode,
139  const QString &errorMessage )
140 {
141  if ( !m_pendingChangeIds.contains( changeId ) )
142  return; // Not ours, someone else deleted something, not our business.
143 
144  m_pendingChangeIds.remove( changeId );
145  const bool isLastChange = m_pendingChangeIds.isEmpty();
146 
147  Q_UNUSED( item );
148  Q_UNUSED( errorMessage );
149  if ( m_abortCurrentOperation && isLastChange ) {
150  emit q->cutFinished( false, i18n( "Error while removing relations." ) );
151  } else if ( !m_abortCurrentOperation ) {
152  if ( resultCode == IncidenceChanger::ResultCodeSuccess ) {
153  if ( isLastChange ) {
154  // All children are unparented, lets cut.
155  Q_ASSERT( item.isValid() && item.hasPayload() );
156  cut( item.payload<KCalCore::Incidence::Ptr>() );
157  }
158  } else {
159  m_abortCurrentOperation = true;
160  }
161  }
162 }
163 
164 void CalendarClipboard::Private::slotDeleteFinished( int changeId, const QVector<Akonadi::Item::Id> &ids,
165  Akonadi::IncidenceChanger::ResultCode result,
166  const QString &errorMessage )
167 {
168  if ( !m_pendingChangeIds.contains( changeId ) )
169  return; // Not ours, someone else deleted something, not our business.
170 
171  m_pendingChangeIds.remove( changeId );
172 
173  Q_UNUSED( ids );
174  if ( result == IncidenceChanger::ResultCodeSuccess ) {
175  emit q->cutFinished( true, QString() );
176  } else {
177  emit q->cutFinished( false, i18n( "Error while deleting incidences: %1",
178  errorMessage ) );
179  }
180 }
181 
182 CalendarClipboard::CalendarClipboard( const Akonadi::CalendarBase::Ptr &calendar,
183  Akonadi::IncidenceChanger *changer,
184  QObject *parent ) : QObject( parent )
185  , d( new Private( calendar, changer, this ) )
186 {
187 
188 
189 }
190 
191 CalendarClipboard::~CalendarClipboard()
192 {
193 }
194 
195 void CalendarClipboard::cutIncidence( const KCalCore::Incidence::Ptr &incidence,
196  CalendarClipboard::Mode mode )
197 {
198  const bool hasChildren = !d->m_calendar->childIncidences( incidence->uid() ).isEmpty();
199  if ( mode == AskMode && hasChildren ) {
200  const int km = KMessageBox::questionYesNoCancel( 0,
201  i18n( "The item \"%1\" has sub-to-dos. "
202  "Do you want to cut just this item and "
203  "make all its sub-to-dos independent, or "
204  "cut the to-do with all its sub-to-dos?",
205  incidence->summary() ),
206  i18n( "KOrganizer Confirmation" ),
207  KGuiItem( i18n( "Cut Only This" ) ),
208  KGuiItem( i18n( "Cut All" ) ) );
209 
210  if ( km == KMessageBox::Cancel ) {
211  emit cutFinished( /*success=*/true, QString() );
212  return;
213  }
214  mode = km == KMessageBox::Yes ? SingleMode : RecursiveMode;
215  } else if ( mode == AskMode ) {
216  mode = SingleMode; // Doesn't have children, don't ask
217  }
218 
219  if ( mode == SingleMode ) {
220  d->makeChildsIndependent( incidence ); // Will call d->cut(incidence) when it finishes.
221  } else {
222  QStringList uids;
223  d->getIncidenceHierarchy( incidence, uids );
224  Q_ASSERT( !uids.isEmpty() );
225  KCalCore::Incidence::List incidencesToCut;
226  foreach( const QString &uid, uids ) {
227  KCalCore::Incidence::Ptr child = d->m_calendar->incidence( uid );
228  if ( child )
229  incidencesToCut << child;
230  }
231  d->cut( incidencesToCut );
232  }
233 }
234 
235 bool CalendarClipboard::copyIncidence( const KCalCore::Incidence::Ptr &incidence,
236  CalendarClipboard::Mode mode )
237 {
238  const bool hasChildren = !d->m_calendar->childIncidences( incidence->uid() ).isEmpty();
239  if ( mode == AskMode && hasChildren ) {
240  const int km = KMessageBox::questionYesNoCancel( 0,
241  i18n( "The item \"%1\" has sub-to-dos. "
242  "Do you want to copy just this item or "
243  "copy the to-do with all its sub-to-dos?",
244  incidence->summary() ),
245  i18n( "KOrganizer Confirmation" ),
246  KGuiItem( i18n( "Copy Only This" ) ),
247  KGuiItem( i18n( "Copy All" ) ) );
248  if ( km == KMessageBox::Cancel ) {
249  return true;
250  }
251  mode = km == KMessageBox::Yes ? SingleMode : RecursiveMode;
252  } else if ( mode == AskMode ) {
253  mode = SingleMode; // Doesn't have children, don't ask
254  }
255 
256  KCalCore::Incidence::List incidencesToCopy;
257  if ( mode == SingleMode ) {
258  incidencesToCopy << incidence;
259  } else {
260  QStringList uids;
261  d->getIncidenceHierarchy( incidence, uids );
262  Q_ASSERT( !uids.isEmpty() );
263  foreach( const QString &uid, uids ) {
264  KCalCore::Incidence::Ptr child = d->m_calendar->incidence( uid );
265  if ( child )
266  incidencesToCopy << child;
267  }
268  }
269 
270  return d->m_dndfactory->copyIncidences( incidencesToCopy );
271 }
272 
273 bool CalendarClipboard::pasteAvailable() const
274 {
275  return KCalUtils::ICalDrag::canDecode( QApplication::clipboard()->mimeData() );
276 }
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