BufferView no longer reacts on layoutChanged() as this is far too often emited.
[quassel.git] / src / uisupport / bufferview.cpp
1 /***************************************************************************
2  *   Copyright (C) 2005-08 by the Quassel Project                          *
3  *   devel@quassel-irc.org                                                 *
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20
21 #include "bufferview.h"
22
23 #include "buffermodel.h"
24 #include "bufferviewfilter.h"
25 #include "buffersyncer.h"
26 #include "client.h"
27 #include "mappedselectionmodel.h"
28 #include "network.h"
29 #include "networkmodel.h"
30
31 #include "uisettings.h"
32
33 #include "global.h"
34
35 #include <QAction>
36 #include <QFlags>
37 #include <QHeaderView>
38 #include <QInputDialog>
39 #include <QLineEdit>
40 #include <QMenu>
41 #include <QMessageBox>
42 #include <QSet>
43
44 /*****************************************
45 * The TreeView showing the Buffers
46 *****************************************/
47 // Please be carefull when reimplementing methods which are used to inform the view about changes to the data
48 // to be on the safe side: call QTreeView's method aswell
49 BufferView::BufferView(QWidget *parent)
50   : QTreeView(parent),
51     showChannelList(tr("Show Channel List"), this),
52     _connectNetAction(tr("Connect"), this),
53     _disconnectNetAction(tr("Disconnect"), this),
54     _joinChannelAction(tr("Join Channel"), this),
55
56     _joinBufferAction(tr("Join"), this),
57     _partBufferAction(tr("Part"), this),
58     _hideBufferTemporarilyAction(tr("Hide buffers"), this),
59     _hideBufferPermanentlyAction(tr("Hide buffers permanently"), this),
60     _removeBufferAction(tr("Delete buffer"), this),
61     _ignoreListAction(tr("Ignore list"), this),
62
63     _hideJoinAction(tr("Join Events"), this),
64     _hidePartAction(tr("Part Events"), this),
65     _hideKillAction(tr("Kill Events"), this),
66     _hideQuitAction(tr("Quit Events"), this),
67     _hideModeAction(tr("Mode Events"), this)
68
69 {
70   _hideJoinAction.setCheckable(true);
71   _hidePartAction.setCheckable(true);
72   _hideKillAction.setCheckable(true);
73   _hideQuitAction.setCheckable(true);
74   _hideModeAction.setCheckable(true);
75   _hideJoinAction.setEnabled(false);
76   _hidePartAction.setEnabled(false);
77   _ignoreListAction.setEnabled(false);
78   _hideKillAction.setEnabled(false);
79   _hideQuitAction.setEnabled(false);
80   _hideModeAction.setEnabled(false);
81
82   connect(this, SIGNAL(collapsed(const QModelIndex &)), this, SLOT(on_collapse(const QModelIndex &)));
83   connect(this, SIGNAL(expanded(const QModelIndex &)), this, SLOT(on_expand(const QModelIndex &)));
84
85   setSelectionMode(QAbstractItemView::ExtendedSelection);
86 }
87
88 void BufferView::init() {
89   setIndentation(10);
90   header()->setContextMenuPolicy(Qt::ActionsContextMenu);
91   hideColumn(1);
92   hideColumn(2);
93   expandAll();
94
95   setAnimated(true);
96
97 #ifndef QT_NO_DRAGANDDROP
98   setDragEnabled(true);
99   setAcceptDrops(true);
100   setDropIndicatorShown(true);
101 #endif
102
103   setSortingEnabled(true);
104   sortByColumn(0, Qt::AscendingOrder);
105 #ifndef Q_WS_QWS
106   // this is a workaround to not join channels automatically... we need a saner way to navigate for qtopia anyway though,
107   // such as mark first, activate at second click...
108   connect(this, SIGNAL(activated(QModelIndex)), this, SLOT(joinChannel(QModelIndex)));
109 #else
110   connect(this, SIGNAL(doubleClicked(QModelIndex)), this, SLOT(joinChannel(QModelIndex)));  // Qtopia uses single click for activation
111 #endif
112 }
113
114 void BufferView::setModel(QAbstractItemModel *model) {
115   delete selectionModel();
116   
117   QTreeView::setModel(model);
118   init();
119   // remove old Actions
120   QList<QAction *> oldactions = header()->actions();
121   foreach(QAction *action, oldactions) {
122     header()->removeAction(action);
123     action->deleteLater();
124   }
125
126   if(!model)
127     return;
128
129   QString sectionName;
130   QAction *showSection;
131   for(int i = 1; i < model->columnCount(); i++) {
132     sectionName = (model->headerData(i, Qt::Horizontal, Qt::DisplayRole)).toString();
133     showSection = new QAction(sectionName, header());
134     showSection->setCheckable(true);
135     showSection->setChecked(!isColumnHidden(i));
136     showSection->setProperty("column", i);
137     connect(showSection, SIGNAL(toggled(bool)), this, SLOT(toggleHeader(bool)));
138     header()->addAction(showSection);
139   }
140   
141 }
142
143 void BufferView::setFilteredModel(QAbstractItemModel *model_, BufferViewConfig *config) {
144   BufferViewFilter *filter = qobject_cast<BufferViewFilter *>(model());
145   if(filter) {
146     filter->setConfig(config);
147     setConfig(config);
148     return;
149   }
150
151   if(model()) {
152     disconnect(this, 0, model(), 0);
153     disconnect(model(), 0, this, 0);
154   }
155
156   if(!model_) {
157     setModel(model_);
158   } else {
159     BufferViewFilter *filter = new BufferViewFilter(model_, config);
160     setModel(filter);
161     connect(filter, SIGNAL(configChanged()), this, SLOT(on_configChanged()));
162   }
163   setConfig(config);
164 }
165
166 void BufferView::setSelectionModel(QItemSelectionModel *selectionModel) {
167   if(QTreeView::selectionModel())
168     disconnect(selectionModel, SIGNAL(currentChanged(QModelIndex, QModelIndex)),
169                model(), SIGNAL(checkPreviousCurrentForRemoval(QModelIndex, QModelIndex)));
170     
171   QTreeView::setSelectionModel(selectionModel);
172   BufferViewFilter *filter = qobject_cast<BufferViewFilter *>(model());
173   if(filter) {
174     connect(selectionModel, SIGNAL(currentChanged(QModelIndex, QModelIndex)),
175             filter, SLOT(checkPreviousCurrentForRemoval(QModelIndex, QModelIndex)));
176   }
177 }
178
179 void BufferView::setConfig(BufferViewConfig *config) {
180   if(_config == config)
181     return;
182   
183   if(_config) {
184     disconnect(_config, 0, this, 0);
185   }
186
187   _config = config;
188   if(config) {
189     connect(config, SIGNAL(networkIdSet(const NetworkId &)), this, SLOT(setRootIndexForNetworkId(const NetworkId &)));
190     setRootIndexForNetworkId(config->networkId());
191   } else {
192     setRootIndex(QModelIndex());
193   }
194 }
195
196 void BufferView::setRootIndexForNetworkId(const NetworkId &networkId) {
197   if(!networkId.isValid() || !model()) {
198     setRootIndex(QModelIndex());
199   } else {
200     int networkCount = model()->rowCount();
201     QModelIndex child;
202     for(int i = 0; i < networkCount; i++) {
203       child = model()->index(i, 0);
204       if(networkId == model()->data(child, NetworkModel::NetworkIdRole).value<NetworkId>())
205         setRootIndex(child);
206     }
207   }
208 }
209
210 void BufferView::joinChannel(const QModelIndex &index) {
211   BufferInfo::Type bufferType = (BufferInfo::Type)index.data(NetworkModel::BufferTypeRole).value<int>();
212
213   if(bufferType != BufferInfo::ChannelBuffer)
214     return;
215
216   BufferInfo bufferInfo = index.data(NetworkModel::BufferInfoRole).value<BufferInfo>();
217   
218   Client::userInput(bufferInfo, QString("/JOIN %1").arg(bufferInfo.bufferName()));
219 }
220
221 void BufferView::keyPressEvent(QKeyEvent *event) {
222   if(event->key() == Qt::Key_Backspace || event->key() == Qt::Key_Delete) {
223     event->accept();
224     removeSelectedBuffers();
225   }
226   QTreeView::keyPressEvent(event);
227 }
228
229 void BufferView::removeSelectedBuffers(bool permanently) {
230   if(!config())
231     return;
232
233   BufferId bufferId;
234   QSet<BufferId> removedRows;
235   foreach(QModelIndex index, selectionModel()->selectedIndexes()) {
236     if(index.data(NetworkModel::ItemTypeRole) != NetworkModel::BufferItemType)
237       continue;
238
239     bufferId = index.data(NetworkModel::BufferIdRole).value<BufferId>();
240     if(removedRows.contains(bufferId))
241       continue;
242
243     removedRows << bufferId;
244     
245     if(permanently)
246       config()->requestRemoveBufferPermanently(bufferId);
247     else
248       config()->requestRemoveBuffer(bufferId);
249   }
250 }
251
252 void BufferView::rowsInserted(const QModelIndex & parent, int start, int end) {
253   QTreeView::rowsInserted(parent, start, end);
254
255   // ensure that newly inserted network nodes are expanded per default
256   if(parent.data(NetworkModel::ItemTypeRole) != NetworkModel::NetworkItemType)
257     return;
258   
259   if(model()->rowCount(parent) == 1 && parent.data(NetworkModel::ItemActiveRole) == true) {
260     // without updating the parent the expand will have no effect... Qt Bug?
261     update(parent);
262     expand(parent);
263   }
264 }
265
266 void BufferView::on_configChanged() {
267   Q_ASSERT(model());
268
269   // expand all active networks... collapse inactive ones... unless manually changed
270   QModelIndex networkIdx;
271   NetworkId networkId;
272   for(int row = 0; row < model()->rowCount(); row++) {
273     networkIdx = model()->index(row, 0);
274     if(model()->rowCount(networkIdx) ==  0)
275       continue;
276
277     networkId = model()->data(networkIdx, NetworkModel::NetworkIdRole).value<NetworkId>();
278     if(!networkId.isValid())
279       continue;
280
281     update(networkIdx);
282
283     bool expandNetwork = false;
284     if(_expandedState.contains(networkId))
285       expandNetwork = _expandedState[networkId];
286     else
287       expandNetwork = model()->data(networkIdx, NetworkModel::ItemActiveRole).toBool();
288
289     if(expandNetwork)
290       expand(networkIdx);
291     else
292       collapse(networkIdx);
293   }
294
295   // update selection to current one
296   MappedSelectionModel *mappedSelectionModel = qobject_cast<MappedSelectionModel *>(selectionModel());
297   if(!config() || !mappedSelectionModel)
298     return;
299
300   mappedSelectionModel->mappedSetCurrentIndex(Client::bufferModel()->standardSelectionModel()->currentIndex(), QItemSelectionModel::Current);
301   mappedSelectionModel->mappedSelect(Client::bufferModel()->standardSelectionModel()->selection(), QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows);
302 }
303
304 void BufferView::on_collapse(const QModelIndex &index) {
305   storeExpandedState(index.data(NetworkModel::NetworkIdRole).value<NetworkId>(), false);
306 }
307
308 void BufferView::on_expand(const QModelIndex &index) {
309   storeExpandedState(index.data(NetworkModel::NetworkIdRole).value<NetworkId>(), true);
310 }
311
312 void BufferView::storeExpandedState(NetworkId networkId, bool expanded) {
313   _expandedState[networkId] = expanded;
314 }
315
316 void BufferView::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight) {
317   QTreeView::dataChanged(topLeft, bottomRight);
318   
319   // determine how many items have been changed and if any of them is a networkitem
320   // which just swichted from active to inactive or vice versa
321   if(topLeft.data(NetworkModel::ItemTypeRole) != NetworkModel::NetworkItemType)
322     return;
323
324   for(int i = topLeft.row(); i <= bottomRight.row(); i++) {
325     QModelIndex networkIdx = topLeft.sibling(topLeft.row(), 0);
326     if(model()->rowCount(networkIdx) == 0)
327       continue;
328
329     bool isActive = networkIdx.data(NetworkModel::ItemActiveRole).toBool();
330     if(isExpanded(networkIdx) != isActive) setExpanded(networkIdx, isActive);
331   }
332 }
333
334 void BufferView::toggleHeader(bool checked) {
335   QAction *action = qobject_cast<QAction *>(sender());
336   header()->setSectionHidden((action->property("column")).toInt(), !checked);
337 }
338
339 bool BufferView::checkRequirements(const QModelIndex &index, ItemActiveStates requiredActiveState) {
340   if(!index.isValid())
341     return false;
342
343   ItemActiveStates isActive = index.data(NetworkModel::ItemActiveRole).toBool()
344     ? ActiveState
345     : InactiveState;
346
347   if(!(isActive & requiredActiveState))
348     return false;
349
350   return true;
351 }
352
353 void BufferView::addItemToMenu(QAction &action, QMenu &menu, const QModelIndex &index, ItemActiveStates requiredActiveState) {
354   if(checkRequirements(index, requiredActiveState)) {
355     menu.addAction(&action);
356     action.setVisible(true);
357   } else {
358     action.setVisible(false);
359   }
360 }
361
362 void BufferView::addItemToMenu(QAction &action, QMenu &menu, bool condition) {
363   if(condition) {
364     menu.addAction(&action);
365     action.setVisible(true);
366   } else {
367     action.setVisible(false);
368   }
369 }
370
371
372 void BufferView::addItemToMenu(QMenu &subMenu, QMenu &menu, const QModelIndex &index, ItemActiveStates requiredActiveState) {
373   if(checkRequirements(index, requiredActiveState)) {
374     menu.addMenu(&subMenu);
375     subMenu.setVisible(true);
376   } else {
377     subMenu.setVisible(false);
378   }
379 }
380
381 void BufferView::addSeparatorToMenu(QMenu &menu, const QModelIndex &index, ItemActiveStates requiredActiveState) {
382   if(checkRequirements(index, requiredActiveState)) {
383     menu.addSeparator();
384   }
385 }
386
387 QMenu *BufferView::createHideEventsSubMenu(QMenu &menu) {
388   // QMenu *hideEventsMenu = new QMenu(tr("Hide Events"), &menu);
389   QMenu *hideEventsMenu = menu.addMenu(tr("Hide Events"));
390   hideEventsMenu->addAction(&_hideJoinAction);
391   hideEventsMenu->addAction(&_hidePartAction);
392   hideEventsMenu->addAction(&_hideKillAction);
393   hideEventsMenu->addAction(&_hideQuitAction);
394   hideEventsMenu->addAction(&_hideModeAction);
395   return hideEventsMenu;
396 }
397
398 void BufferView::contextMenuEvent(QContextMenuEvent *event) {
399   QModelIndex index = indexAt(event->pos());
400   if(!index.isValid())
401     return;
402
403   const Network *network = Client::network(index.data(NetworkModel::NetworkIdRole).value<NetworkId>());
404   Q_CHECK_PTR(network);
405
406   QIcon connectionStateIcon;
407   if(network) {
408     if(network->connectionState() == Network::Initialized) {
409       connectionStateIcon = QIcon(":/22x22/actions/network-connect");
410     } else if(network->connectionState() == Network::Disconnected) {
411       connectionStateIcon = QIcon(":/22x22/actions/network-disconnect");
412     } else {
413       connectionStateIcon = QIcon(":/22x22/actions/gear");
414     }
415   }
416   
417   QMenu contextMenu(this);
418   NetworkModel::itemType itemType = static_cast<NetworkModel::itemType>(index.data(NetworkModel::ItemTypeRole).toInt());
419   
420   switch(itemType) {
421   case NetworkModel::NetworkItemType:
422     showChannelList.setData(index.data(NetworkModel::NetworkIdRole));
423     _disconnectNetAction.setIcon(connectionStateIcon);
424     _connectNetAction.setIcon(connectionStateIcon);
425     addItemToMenu(showChannelList, contextMenu, index, ActiveState);
426     addItemToMenu(_disconnectNetAction, contextMenu, index, ActiveState);
427     addItemToMenu(_connectNetAction, contextMenu, index, InactiveState);
428     addSeparatorToMenu(contextMenu, index, ActiveState);
429     addItemToMenu(_joinChannelAction, contextMenu, index, ActiveState);
430     break;
431   case NetworkModel::BufferItemType:
432     {
433       BufferInfo bufferInfo = index.data(NetworkModel::BufferInfoRole).value<BufferInfo>();
434       switch(bufferInfo.type()) {
435       case BufferInfo::ChannelBuffer:
436         addItemToMenu(_joinBufferAction, contextMenu, index, InactiveState);
437         addItemToMenu(_partBufferAction, contextMenu, index, ActiveState);
438         addItemToMenu(_hideBufferTemporarilyAction, contextMenu, (bool)config());
439         addItemToMenu(_hideBufferPermanentlyAction, contextMenu, (bool)config());
440         addItemToMenu(_removeBufferAction, contextMenu, index, InactiveState);
441         createHideEventsSubMenu(contextMenu);
442         addItemToMenu(_ignoreListAction, contextMenu);
443         break;
444       case BufferInfo::QueryBuffer:
445         addItemToMenu(_hideBufferTemporarilyAction, contextMenu, (bool)config());
446         addItemToMenu(_hideBufferPermanentlyAction, contextMenu, (bool)config());
447         addItemToMenu(_removeBufferAction, contextMenu);
448         createHideEventsSubMenu(contextMenu);
449         break;
450       default:
451         addItemToMenu(_hideBufferTemporarilyAction, contextMenu, (bool)config());
452         addItemToMenu(_hideBufferPermanentlyAction, contextMenu, (bool)config());
453         break;
454       }
455     }
456     break;
457   default:
458     return;
459   }
460   
461   if(contextMenu.actions().isEmpty())
462     return;
463   QAction *result = contextMenu.exec(QCursor::pos());
464   
465   // Handle Result
466   if(network && result == &_connectNetAction) {
467     network->requestConnect();
468     return;
469   }
470
471   if(network && result == &_disconnectNetAction) {
472     network->requestDisconnect();
473     return;
474   }
475
476   if(result == &_joinChannelAction) {
477     // FIXME no QInputDialog in Qtopia
478 #ifndef Q_WS_QWS
479     bool ok;
480     QString channelName = QInputDialog::getText(this, tr("Join Channel"), tr("Input channel name:"), QLineEdit::Normal, QString(), &ok);
481     if(ok && !channelName.isEmpty()) {
482       Client::instance()->userInput(BufferInfo::fakeStatusBuffer(index.data(NetworkModel::NetworkIdRole).value<NetworkId>()), QString("/J %1").arg(channelName));
483     }
484 #endif
485     return;
486   }
487
488   if(result == &_joinBufferAction) {
489     BufferInfo bufferInfo = index.data(NetworkModel::BufferInfoRole).value<BufferInfo>();
490     Client::instance()->userInput(bufferInfo, QString("/JOIN %1").arg(bufferInfo.bufferName()));
491     return;
492   }
493
494   if(result == &_partBufferAction) {
495     BufferInfo bufferInfo = index.data(NetworkModel::BufferInfoRole).value<BufferInfo>();
496     Client::instance()->userInput(bufferInfo, QString("/PART"));
497     return;
498   }
499   
500   if(result == &_hideBufferTemporarilyAction) {
501     removeSelectedBuffers();
502     return;
503   }
504
505   if(result == &_hideBufferPermanentlyAction) {
506     removeSelectedBuffers(true);
507     return;
508   }
509
510   if(result == &_removeBufferAction) {
511     BufferInfo bufferInfo = index.data(NetworkModel::BufferInfoRole).value<BufferInfo>();
512     int res = QMessageBox::question(this, tr("Remove buffer permanently?"),
513                                     tr("Do you want to delete the buffer \"%1\" permanently? This will delete all related data, including all backlog "
514                                        "data, from the core's database!").arg(bufferInfo.bufferName()),
515                                         QMessageBox::Yes|QMessageBox::No, QMessageBox::No);
516     if(res == QMessageBox::Yes) {
517       Client::removeBuffer(bufferInfo.bufferId());
518     }
519     return;
520   }
521
522 }
523
524 void BufferView::wheelEvent(QWheelEvent* event) {
525   if(UiSettings().value("MouseWheelChangesBuffers", QVariant(true)).toBool() == (bool)(event->modifiers() & Qt::AltModifier))
526     return QTreeView::wheelEvent(event);
527
528   int rowDelta = ( event->delta() > 0 ) ? -1 : 1;
529   QModelIndex currentIndex = selectionModel()->currentIndex();
530   QModelIndex resultingIndex;
531   if( model()->hasIndex(  currentIndex.row() + rowDelta, currentIndex.column(), currentIndex.parent() ) )
532     {
533       resultingIndex = currentIndex.sibling( currentIndex.row() + rowDelta, currentIndex.column() );
534     }
535     else //if we scroll into a the parent node...
536       {
537         QModelIndex parent = currentIndex.parent();
538         QModelIndex aunt = parent.sibling( parent.row() + rowDelta, parent.column() );
539         if( rowDelta == -1 )
540           resultingIndex = aunt.child( model()->rowCount( aunt ) - 1, 0 );
541         else
542           resultingIndex = aunt.child( 0, 0 );
543         if( !resultingIndex.isValid() )
544           return;
545       }
546   selectionModel()->setCurrentIndex( resultingIndex, QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows );
547   selectionModel()->select( resultingIndex, QItemSelectionModel::ClearAndSelect );
548   
549 }
550
551
552 QSize BufferView::sizeHint() const {
553   return QTreeView::sizeHint();
554   
555   if(!model())
556     return QTreeView::sizeHint();
557
558   if(model()->rowCount() == 0)
559     return QSize(120, 50);
560
561   int columnSize = 0;
562   for(int i = 0; i < model()->columnCount(); i++) {
563     if(!isColumnHidden(i))
564       columnSize += sizeHintForColumn(i);
565   }
566   return QSize(columnSize, 50);
567 }
568
569 // ==============================
570 //  BufferView Dock
571 // ==============================
572 BufferViewDock::BufferViewDock(BufferViewConfig *config, QWidget *parent)
573   : QDockWidget(config->bufferViewName(), parent)
574 {
575   setObjectName("BufferViewDock-" + QString::number(config->bufferViewId()));
576   toggleViewAction()->setData(config->bufferViewId());
577   setAllowedAreas(Qt::RightDockWidgetArea|Qt::LeftDockWidgetArea);
578   connect(config, SIGNAL(bufferViewNameSet(const QString &)), this, SLOT(bufferViewRenamed(const QString &)));
579 }
580
581 BufferViewDock::BufferViewDock(QWidget *parent)
582   : QDockWidget(tr("All Buffers"), parent)
583 {
584   setObjectName("BufferViewDock--1");
585   toggleViewAction()->setData((int)-1);
586   setAllowedAreas(Qt::RightDockWidgetArea|Qt::LeftDockWidgetArea);
587 }
588
589 void BufferViewDock::bufferViewRenamed(const QString &newName) {
590   setWindowTitle(newName);
591   toggleViewAction()->setText(newName);
592 }