Fix the SSL check on systems that don't use OpenSSL
[quassel.git] / src / uisupport / bufferview.cpp
1 /***************************************************************************
2  *   Copyright (C) 2005-2015 by the Quassel Project                        *
3  *   devel@quassel-irc.org                                                 *
4  *                                                                         *
5  *   This program is free software; you can redistribute it and/or modify  *
6  *   it under the terms of the GNU General Public License as published by  *
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8  *   (at your option) version 3.                                           *
9  *                                                                         *
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19  ***************************************************************************/
20
21 #include "bufferview.h"
22
23 #include <QApplication>
24 #include <QAction>
25 #include <QFlags>
26 #include <QHeaderView>
27 #include <QLineEdit>
28 #include <QMenu>
29 #include <QMessageBox>
30 #include <QSet>
31
32 #include "action.h"
33 #include "buffermodel.h"
34 #include "bufferviewfilter.h"
35 #include "buffersettings.h"
36 #include "buffersyncer.h"
37 #include "client.h"
38 #include "contextmenuactionprovider.h"
39 #include "graphicalui.h"
40 #include "network.h"
41 #include "networkmodel.h"
42 #include "contextmenuactionprovider.h"
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 {
52     connect(this, SIGNAL(collapsed(const QModelIndex &)), SLOT(storeExpandedState(const QModelIndex &)));
53     connect(this, SIGNAL(expanded(const QModelIndex &)), SLOT(storeExpandedState(const QModelIndex &)));
54
55     setSelectionMode(QAbstractItemView::ExtendedSelection);
56
57     QAbstractItemDelegate *oldDelegate = itemDelegate();
58     BufferViewDelegate *tristateDelegate = new BufferViewDelegate(this);
59     setItemDelegate(tristateDelegate);
60     delete oldDelegate;
61 }
62
63
64 void BufferView::init()
65 {
66     header()->setContextMenuPolicy(Qt::ActionsContextMenu);
67     hideColumn(1);
68     hideColumn(2);
69     setIndentation(10);
70
71     expandAll();
72
73     header()->hide(); // nobody seems to use this anyway
74
75     // breaks with Qt 4.8
76     if (QString("4.8.0") > qVersion()) // FIXME breaks with Qt versions >= 4.10!
77         setAnimated(true);
78
79     // FIXME This is to workaround bug #663
80     setUniformRowHeights(true);
81
82 #ifndef QT_NO_DRAGANDDROP
83     setDragEnabled(true);
84     setAcceptDrops(true);
85     setDropIndicatorShown(true);
86 #endif
87
88     setSortingEnabled(true);
89     sortByColumn(0, Qt::AscendingOrder);
90
91     // activated() fails on X11 and Qtopia at least
92 #if defined Q_WS_QWS || defined Q_WS_X11
93     disconnect(this, SIGNAL(doubleClicked(QModelIndex)), this, SLOT(joinChannel(QModelIndex)));
94     connect(this, SIGNAL(doubleClicked(QModelIndex)), SLOT(joinChannel(QModelIndex)));
95 #else
96     // afaik this is better on Mac and Windows
97     disconnect(this, SIGNAL(activated(QModelIndex)), this, SLOT(joinChannel(QModelIndex)));
98     connect(this, SIGNAL(activated(QModelIndex)), SLOT(joinChannel(QModelIndex)));
99 #endif
100 }
101
102
103 void BufferView::setModel(QAbstractItemModel *model)
104 {
105     delete selectionModel();
106
107     QTreeView::setModel(model);
108     init();
109     // remove old Actions
110     QList<QAction *> oldactions = header()->actions();
111     foreach(QAction *action, oldactions) {
112         header()->removeAction(action);
113         action->deleteLater();
114     }
115
116     if (!model)
117         return;
118
119     QString sectionName;
120     QAction *showSection;
121     for (int i = 1; i < model->columnCount(); i++) {
122         sectionName = (model->headerData(i, Qt::Horizontal, Qt::DisplayRole)).toString();
123         showSection = new QAction(sectionName, header());
124         showSection->setCheckable(true);
125         showSection->setChecked(!isColumnHidden(i));
126         showSection->setProperty("column", i);
127         connect(showSection, SIGNAL(toggled(bool)), this, SLOT(toggleHeader(bool)));
128         header()->addAction(showSection);
129     }
130
131     connect(model, SIGNAL(layoutChanged()), this, SLOT(on_layoutChanged()));
132 }
133
134
135 void BufferView::setFilteredModel(QAbstractItemModel *model_, BufferViewConfig *config)
136 {
137     BufferViewFilter *filter = qobject_cast<BufferViewFilter *>(model());
138     if (filter) {
139         filter->setConfig(config);
140         setConfig(config);
141         return;
142     }
143
144     if (model()) {
145         disconnect(this, 0, model(), 0);
146         disconnect(model(), 0, this, 0);
147     }
148
149     if (!model_) {
150         setModel(model_);
151     }
152     else {
153         BufferViewFilter *filter = new BufferViewFilter(model_, config);
154         setModel(filter);
155         connect(filter, SIGNAL(configChanged()), this, SLOT(on_configChanged()));
156     }
157     setConfig(config);
158 }
159
160
161 void BufferView::setSelectionModel(QItemSelectionModel *selectionModel)
162 {
163     if (QTreeView::selectionModel())
164         disconnect(selectionModel, SIGNAL(currentChanged(QModelIndex, QModelIndex)),
165             model(), SIGNAL(checkPreviousCurrentForRemoval(QModelIndex, QModelIndex)));
166
167     QTreeView::setSelectionModel(selectionModel);
168     BufferViewFilter *filter = qobject_cast<BufferViewFilter *>(model());
169     if (filter) {
170         connect(selectionModel, SIGNAL(currentChanged(QModelIndex, QModelIndex)),
171             filter, SLOT(checkPreviousCurrentForRemoval(QModelIndex, QModelIndex)));
172     }
173 }
174
175
176 void BufferView::setConfig(BufferViewConfig *config)
177 {
178     if (_config == config)
179         return;
180
181     if (_config) {
182         disconnect(_config, 0, this, 0);
183     }
184
185     _config = config;
186     if (config) {
187         connect(config, SIGNAL(networkIdSet(const NetworkId &)), this, SLOT(setRootIndexForNetworkId(const NetworkId &)));
188         setRootIndexForNetworkId(config->networkId());
189     }
190     else {
191         setIndentation(10);
192         setRootIndex(QModelIndex());
193     }
194 }
195
196
197 void BufferView::setRootIndexForNetworkId(const NetworkId &networkId)
198 {
199     if (!networkId.isValid() || !model()) {
200         setIndentation(10);
201         setRootIndex(QModelIndex());
202     }
203     else {
204         setIndentation(5);
205         int networkCount = model()->rowCount();
206         QModelIndex child;
207         for (int i = 0; i < networkCount; i++) {
208             child = model()->index(i, 0);
209             if (networkId == model()->data(child, NetworkModel::NetworkIdRole).value<NetworkId>())
210                 setRootIndex(child);
211         }
212     }
213 }
214
215
216 void BufferView::joinChannel(const QModelIndex &index)
217 {
218     BufferInfo::Type bufferType = (BufferInfo::Type)index.data(NetworkModel::BufferTypeRole).value<int>();
219
220     if (bufferType != BufferInfo::ChannelBuffer)
221         return;
222
223     BufferInfo bufferInfo = index.data(NetworkModel::BufferInfoRole).value<BufferInfo>();
224
225     Client::userInput(bufferInfo, QString("/JOIN %1").arg(bufferInfo.bufferName()));
226 }
227
228
229 void BufferView::keyPressEvent(QKeyEvent *event)
230 {
231     if (event->key() == Qt::Key_Backspace || event->key() == Qt::Key_Delete) {
232         event->accept();
233         removeSelectedBuffers();
234     }
235     QTreeView::keyPressEvent(event);
236 }
237
238
239 void BufferView::dropEvent(QDropEvent *event)
240 {
241     QModelIndex index = indexAt(event->pos());
242
243     QRect indexRect = visualRect(index);
244     QPoint cursorPos = event->pos();
245
246     // check if we're really _on_ the item and not indicating a move to just above or below the item
247     const int margin = 2;
248     if (cursorPos.y() - indexRect.top() < margin
249         || indexRect.bottom() - cursorPos.y() < margin)
250         return QTreeView::dropEvent(event);
251
252     QList<QPair<NetworkId, BufferId> > bufferList = Client::networkModel()->mimeDataToBufferList(event->mimeData());
253     if (bufferList.count() != 1)
254         return QTreeView::dropEvent(event);
255
256     BufferId bufferId2 = bufferList[0].second;
257
258     if (index.data(NetworkModel::ItemTypeRole) != NetworkModel::BufferItemType)
259         return QTreeView::dropEvent(event);
260
261     if (index.data(NetworkModel::BufferTypeRole) != BufferInfo::QueryBuffer)
262         return QTreeView::dropEvent(event);
263
264     BufferId bufferId1 = index.data(NetworkModel::BufferIdRole).value<BufferId>();
265     if (bufferId1 == bufferId2)
266         return QTreeView::dropEvent(event);
267
268     int res = QMessageBox::question(0, tr("Merge buffers permanently?"),
269         tr("Do you want to merge the buffer \"%1\" permanently into buffer \"%2\"?\n This cannot be reversed!").arg(Client::networkModel()->bufferName(bufferId2)).arg(Client::networkModel()->bufferName(bufferId1)),
270         QMessageBox::Yes|QMessageBox::No, QMessageBox::No);
271     if (res == QMessageBox::Yes) {
272         Client::mergeBuffersPermanently(bufferId1, bufferId2);
273     }
274 }
275
276
277 void BufferView::removeSelectedBuffers(bool permanently)
278 {
279     if (!config())
280         return;
281
282     BufferId bufferId;
283     QSet<BufferId> removedRows;
284     foreach(QModelIndex index, selectionModel()->selectedIndexes()) {
285         if (index.data(NetworkModel::ItemTypeRole) != NetworkModel::BufferItemType)
286             continue;
287
288         bufferId = index.data(NetworkModel::BufferIdRole).value<BufferId>();
289         if (removedRows.contains(bufferId))
290             continue;
291
292         removedRows << bufferId;
293     }
294
295     foreach(BufferId bufferId, removedRows) {
296         if (permanently)
297             config()->requestRemoveBufferPermanently(bufferId);
298         else
299             config()->requestRemoveBuffer(bufferId);
300     }
301 }
302
303
304 void BufferView::rowsInserted(const QModelIndex &parent, int start, int end)
305 {
306     QTreeView::rowsInserted(parent, start, end);
307
308     // ensure that newly inserted network nodes are expanded per default
309     if (parent.data(NetworkModel::ItemTypeRole) != NetworkModel::NetworkItemType)
310         return;
311
312     setExpandedState(parent);
313 }
314
315
316 void BufferView::on_layoutChanged()
317 {
318     int numNets = model()->rowCount(QModelIndex());
319     for (int row = 0; row < numNets; row++) {
320         QModelIndex networkIdx = model()->index(row, 0, QModelIndex());
321         setExpandedState(networkIdx);
322     }
323 }
324
325
326 void BufferView::on_configChanged()
327 {
328     Q_ASSERT(model());
329
330     // expand all active networks... collapse inactive ones... unless manually changed
331     QModelIndex networkIdx;
332     NetworkId networkId;
333     for (int row = 0; row < model()->rowCount(); row++) {
334         networkIdx = model()->index(row, 0);
335         if (model()->rowCount(networkIdx) ==  0)
336             continue;
337
338         networkId = model()->data(networkIdx, NetworkModel::NetworkIdRole).value<NetworkId>();
339         if (!networkId.isValid())
340             continue;
341
342         setExpandedState(networkIdx);
343     }
344
345     if (config()) {
346         // update selection to current one
347         Client::bufferModel()->synchronizeView(this);
348     }
349 }
350
351
352 void BufferView::storeExpandedState(const QModelIndex &networkIdx)
353 {
354     NetworkId networkId = model()->data(networkIdx, NetworkModel::NetworkIdRole).value<NetworkId>();
355
356     int oldState = 0;
357     if (isExpanded(networkIdx))
358         oldState |= WasExpanded;
359     if (model()->data(networkIdx, NetworkModel::ItemActiveRole).toBool())
360         oldState |= WasActive;
361
362     _expandedState[networkId] = oldState;
363 }
364
365
366 void BufferView::setExpandedState(const QModelIndex &networkIdx)
367 {
368     if (model()->data(networkIdx, NetworkModel::ItemTypeRole) != NetworkModel::NetworkItemType)
369         return;
370
371     if (model()->rowCount(networkIdx) == 0)
372         return;
373
374     NetworkId networkId = model()->data(networkIdx, NetworkModel::NetworkIdRole).value<NetworkId>();
375
376     bool networkActive = model()->data(networkIdx, NetworkModel::ItemActiveRole).toBool();
377     bool expandNetwork = networkActive;
378     if (_expandedState.contains(networkId)) {
379         int oldState = _expandedState[networkId];
380         if ((bool)(oldState & WasActive) == networkActive)
381             expandNetwork = (bool)(oldState & WasExpanded);
382     }
383
384     if (expandNetwork != isExpanded(networkIdx)) {
385         update(networkIdx);
386         setExpanded(networkIdx, expandNetwork);
387     }
388     storeExpandedState(networkIdx); // this call is needed to keep track of the isActive state
389 }
390
391 #if QT_VERSION < 0x050000
392 void BufferView::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight)
393 {
394     QTreeView::dataChanged(topLeft, bottomRight);
395 #else
396 void BufferView::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight, const QVector<int> &roles)
397 {
398     QTreeView::dataChanged(topLeft, bottomRight, roles);
399 #endif
400
401     // determine how many items have been changed and if any of them is a networkitem
402     // which just swichted from active to inactive or vice versa
403     if (topLeft.data(NetworkModel::ItemTypeRole) != NetworkModel::NetworkItemType)
404         return;
405
406     for (int i = topLeft.row(); i <= bottomRight.row(); i++) {
407         QModelIndex networkIdx = topLeft.sibling(i, 0);
408         setExpandedState(networkIdx);
409     }
410 }
411
412
413 void BufferView::toggleHeader(bool checked)
414 {
415     QAction *action = qobject_cast<QAction *>(sender());
416     header()->setSectionHidden((action->property("column")).toInt(), !checked);
417 }
418
419
420 void BufferView::contextMenuEvent(QContextMenuEvent *event)
421 {
422     QModelIndex index = indexAt(event->pos());
423     if (!index.isValid())
424         index = rootIndex();
425
426     QMenu contextMenu(this);
427
428     if (index.isValid()) {
429         addActionsToMenu(&contextMenu, index);
430     }
431
432     addFilterActions(&contextMenu, index);
433
434     if (!contextMenu.actions().isEmpty())
435         contextMenu.exec(QCursor::pos());
436 }
437
438
439 void BufferView::addActionsToMenu(QMenu *contextMenu, const QModelIndex &index)
440 {
441     QModelIndexList indexList = selectedIndexes();
442     // make sure the item we clicked on is first
443     indexList.removeAll(index);
444     indexList.prepend(index);
445
446     GraphicalUi::contextMenuActionProvider()->addActions(contextMenu, indexList, this, "menuActionTriggered", (bool)config());
447 }
448
449
450 void BufferView::addFilterActions(QMenu *contextMenu, const QModelIndex &index)
451 {
452     BufferViewFilter *filter = qobject_cast<BufferViewFilter *>(model());
453     if (filter) {
454         QList<QAction *> filterActions = filter->actions(index);
455         if (!filterActions.isEmpty()) {
456             contextMenu->addSeparator();
457             foreach(QAction *action, filterActions) {
458                 contextMenu->addAction(action);
459             }
460         }
461     }
462 }
463
464
465 void BufferView::menuActionTriggered(QAction *result)
466 {
467     ContextMenuActionProvider::ActionType type = (ContextMenuActionProvider::ActionType)result->data().toInt();
468     switch (type) {
469     case ContextMenuActionProvider::HideBufferTemporarily:
470         removeSelectedBuffers();
471         break;
472     case ContextMenuActionProvider::HideBufferPermanently:
473         removeSelectedBuffers(true);
474         break;
475     default:
476         return;
477     }
478 }
479
480
481 void BufferView::nextBuffer()
482 {
483     changeBuffer(Forward);
484 }
485
486
487 void BufferView::previousBuffer()
488 {
489     changeBuffer(Backward);
490 }
491
492
493 void BufferView::changeBuffer(Direction direction)
494 {
495     QModelIndex currentIndex = selectionModel()->currentIndex();
496     QModelIndex resultingIndex;
497
498     if (currentIndex.parent().isValid()) {
499         //If we are a child node just switch among siblings unless it's the first/last child
500         resultingIndex = currentIndex.sibling(currentIndex.row() + direction, 0);
501
502         if (!resultingIndex.isValid()) {
503             QModelIndex parent = currentIndex.parent();
504             if (direction == Backward)
505                 resultingIndex = parent;
506             else
507                 resultingIndex = parent.sibling(parent.row() + direction, 0);
508         }
509     }
510     else {
511         //If we have a toplevel node, try and get an adjacent child
512         if (direction == Backward) {
513             QModelIndex newParent = currentIndex.sibling(currentIndex.row() - 1, 0);
514             if (model()->hasChildren(newParent))
515                 resultingIndex = newParent.child(model()->rowCount(newParent) - 1, 0);
516             else
517                 resultingIndex = newParent;
518         }
519         else {
520             if (model()->hasChildren(currentIndex))
521                 resultingIndex = currentIndex.child(0, 0);
522             else
523                 resultingIndex = currentIndex.sibling(currentIndex.row() + 1, 0);
524         }
525     }
526
527     if (!resultingIndex.isValid())
528         return;
529
530     selectionModel()->setCurrentIndex(resultingIndex, QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows);
531     selectionModel()->select(resultingIndex, QItemSelectionModel::ClearAndSelect);
532 }
533
534
535 void BufferView::wheelEvent(QWheelEvent *event)
536 {
537     if (ItemViewSettings().mouseWheelChangesBuffer() == (bool)(event->modifiers() & Qt::AltModifier))
538         return QTreeView::wheelEvent(event);
539
540     int rowDelta = (event->delta() > 0) ? -1 : 1;
541     changeBuffer((Direction)rowDelta);
542 }
543
544
545 void BufferView::hideCurrentBuffer()
546 {
547     QModelIndex index = selectionModel()->currentIndex();
548     if (index.data(NetworkModel::ItemTypeRole) != NetworkModel::BufferItemType)
549         return;
550
551     BufferId bufferId = index.data(NetworkModel::BufferIdRole).value<BufferId>();
552
553     //The check above means we won't be looking at a network, which should always be the first row, so we can just go backwards.
554     changeBuffer(Backward);
555
556     /*if(removedRows.contains(bufferId))
557       continue;
558
559     removedRows << bufferId;*/
560     /*if(permanently)
561       config()->requestRemoveBufferPermanently(bufferId);
562     else*/
563     config()->requestRemoveBuffer(bufferId);
564 }
565
566
567 QSize BufferView::sizeHint() const
568 {
569     return QTreeView::sizeHint();
570
571     if (!model())
572         return QTreeView::sizeHint();
573
574     if (model()->rowCount() == 0)
575         return QSize(120, 50);
576
577     int columnSize = 0;
578     for (int i = 0; i < model()->columnCount(); i++) {
579         if (!isColumnHidden(i))
580             columnSize += sizeHintForColumn(i);
581     }
582     return QSize(columnSize, 50);
583 }
584
585
586 // ****************************************
587 //  BufferViewDelgate
588 // ****************************************
589 class ColorsChangedEvent : public QEvent
590 {
591 public:
592     ColorsChangedEvent() : QEvent(QEvent::User) {};
593 };
594
595
596 BufferViewDelegate::BufferViewDelegate(QObject *parent)
597     : QStyledItemDelegate(parent)
598 {
599 }
600
601
602 void BufferViewDelegate::customEvent(QEvent *event)
603 {
604     if (event->type() != QEvent::User)
605         return;
606
607     event->accept();
608 }
609
610
611 bool BufferViewDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
612 {
613     if (event->type() != QEvent::MouseButtonRelease)
614         return QStyledItemDelegate::editorEvent(event, model, option, index);
615
616     if (!(model->flags(index) & Qt::ItemIsUserCheckable))
617         return QStyledItemDelegate::editorEvent(event, model, option, index);
618
619     QVariant value = index.data(Qt::CheckStateRole);
620     if (!value.isValid())
621         return QStyledItemDelegate::editorEvent(event, model, option, index);
622
623     QStyleOptionViewItemV4 viewOpt(option);
624     initStyleOption(&viewOpt, index);
625
626     QRect checkRect = viewOpt.widget->style()->subElementRect(QStyle::SE_ItemViewItemCheckIndicator, &viewOpt, viewOpt.widget);
627     QMouseEvent *me = static_cast<QMouseEvent *>(event);
628
629     if (me->button() != Qt::LeftButton || !checkRect.contains(me->pos()))
630         return QStyledItemDelegate::editorEvent(event, model, option, index);
631
632     Qt::CheckState state = static_cast<Qt::CheckState>(value.toInt());
633     if (state == Qt::Unchecked)
634         state = Qt::PartiallyChecked;
635     else if (state == Qt::PartiallyChecked)
636         state = Qt::Checked;
637     else
638         state = Qt::Unchecked;
639     model->setData(index, state, Qt::CheckStateRole);
640     return true;
641 }
642
643
644 // ==============================
645 //  BufferView Dock
646 // ==============================
647 BufferViewDock::BufferViewDock(BufferViewConfig *config, QWidget *parent)
648     : QDockWidget(parent),
649     _active(false),
650     _title(config->bufferViewName())
651 {
652     setObjectName("BufferViewDock-" + QString::number(config->bufferViewId()));
653     toggleViewAction()->setData(config->bufferViewId());
654     setAllowedAreas(Qt::RightDockWidgetArea|Qt::LeftDockWidgetArea);
655     connect(config, SIGNAL(bufferViewNameSet(const QString &)), this, SLOT(bufferViewRenamed(const QString &)));
656     updateTitle();
657 }
658
659
660 void BufferViewDock::updateTitle()
661 {
662     QString title = _title;
663     if (isActive())
664         title.prepend(QString::fromUtf8("• "));
665     setWindowTitle(title);
666 }
667
668
669 void BufferViewDock::setActive(bool active)
670 {
671     if (active != isActive()) {
672         _active = active;
673         updateTitle();
674         if (active)
675             raise();  // for tabbed docks
676     }
677 }
678
679
680 void BufferViewDock::bufferViewRenamed(const QString &newName)
681 {
682     _title = newName;
683     updateTitle();
684     toggleViewAction()->setText(newName);
685 }
686
687
688 int BufferViewDock::bufferViewId() const
689 {
690     BufferView *view = bufferView();
691     if (!view)
692         return 0;
693
694     if (view->config())
695         return view->config()->bufferViewId();
696     else
697         return 0;
698 }
699
700
701 BufferViewConfig *BufferViewDock::config() const
702 {
703     BufferView *view = bufferView();
704     if (!view)
705         return 0;
706     else
707         return view->config();
708 }