+
+QSize BufferView::sizeHint() const
+{
+ return TreeViewTouch::sizeHint();
+
+ if (!model())
+ return TreeViewTouch::sizeHint();
+
+ if (model()->rowCount() == 0)
+ return {120, 50};
+
+ int columnSize = 0;
+ for (int i = 0; i < model()->columnCount(); i++) {
+ if (!isColumnHidden(i))
+ columnSize += sizeHintForColumn(i);
+ }
+ return {columnSize, 50};
+}
+
+
+void BufferView::changeHighlight(BufferView::Direction direction)
+{
+ // If for some weird reason we get a new delegate
+ auto delegate = qobject_cast<BufferViewDelegate*>(itemDelegate(_currentHighlight));
+ if (delegate) {
+ delegate->currentHighlight = QModelIndex();
+ }
+
+ QModelIndex newIndex = _currentHighlight;
+ if (!newIndex.isValid()) {
+ newIndex = model()->index(0, 0);
+ }
+
+ if (direction == Backward) {
+ newIndex = indexBelow(newIndex);
+ } else {
+ newIndex = indexAbove(newIndex);
+ }
+
+ if (!newIndex.isValid()) {
+ return;
+ }
+
+ _currentHighlight = newIndex;
+
+ delegate = qobject_cast<BufferViewDelegate*>(itemDelegate(_currentHighlight));
+ if (delegate) {
+ delegate->currentHighlight = _currentHighlight;
+ }
+ viewport()->update();
+}
+
+void BufferView::selectHighlighted()
+{
+ if (_currentHighlight.isValid()) {
+ selectionModel()->setCurrentIndex(_currentHighlight, QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows);
+ selectionModel()->select(_currentHighlight, QItemSelectionModel::ClearAndSelect);
+ } else {
+ selectFirstBuffer();
+ }
+
+ clearHighlight();
+}
+
+void BufferView::clearHighlight()
+{
+ // If for some weird reason we get a new delegate
+ auto delegate = qobject_cast<BufferViewDelegate*>(itemDelegate(_currentHighlight));
+ if (delegate) {
+ delegate->currentHighlight = QModelIndex();
+ }
+ _currentHighlight = QModelIndex();
+ viewport()->update();
+}
+
+// ****************************************
+// BufferViewDelegate
+// ****************************************
+class ColorsChangedEvent : public QEvent
+{
+public:
+ ColorsChangedEvent() : QEvent(QEvent::User) {};
+};
+
+
+BufferViewDelegate::BufferViewDelegate(QObject *parent)
+ : QStyledItemDelegate(parent)
+{
+}
+
+
+void BufferViewDelegate::customEvent(QEvent *event)
+{
+ if (event->type() != QEvent::User)
+ return;
+
+ event->accept();
+}
+
+
+bool BufferViewDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
+{
+ if (event->type() != QEvent::MouseButtonRelease)
+ return QStyledItemDelegate::editorEvent(event, model, option, index);
+
+ if (!(model->flags(index) & Qt::ItemIsUserCheckable))
+ return QStyledItemDelegate::editorEvent(event, model, option, index);
+
+ QVariant value = index.data(Qt::CheckStateRole);
+ if (!value.isValid())
+ return QStyledItemDelegate::editorEvent(event, model, option, index);
+
+ QStyleOptionViewItem viewOpt(option);
+ initStyleOption(&viewOpt, index);
+
+ QRect checkRect = viewOpt.widget->style()->subElementRect(QStyle::SE_ItemViewItemCheckIndicator, &viewOpt, viewOpt.widget);
+ auto *me = static_cast<QMouseEvent *>(event);
+
+ if (me->button() != Qt::LeftButton || !checkRect.contains(me->pos()))
+ return QStyledItemDelegate::editorEvent(event, model, option, index);
+
+ auto state = static_cast<Qt::CheckState>(value.toInt());
+ if (state == Qt::Unchecked)
+ state = Qt::PartiallyChecked;
+ else if (state == Qt::PartiallyChecked)
+ state = Qt::Checked;
+ else
+ state = Qt::Unchecked;
+ model->setData(index, state, Qt::CheckStateRole);
+ return true;
+}
+
+