- return;
- }
-}
-
-void BufferView::wheelEvent(QWheelEvent* event) {
- if(ItemViewSettings().mouseWheelChangesBuffer() == (bool)(event->modifiers() & Qt::AltModifier))
- return QTreeView::wheelEvent(event);
-
- int rowDelta = ( event->delta() > 0 ) ? -1 : 1;
- QModelIndex currentIndex = selectionModel()->currentIndex();
- QModelIndex resultingIndex;
- if( model()->hasIndex( currentIndex.row() + rowDelta, currentIndex.column(), currentIndex.parent() ) )
- {
- resultingIndex = currentIndex.sibling( currentIndex.row() + rowDelta, currentIndex.column() );
- }
- else //if we scroll into a the parent node...
- {
- QModelIndex parent = currentIndex.parent();
- QModelIndex aunt = parent.sibling( parent.row() + rowDelta, parent.column() );
- if( rowDelta == -1 )
- resultingIndex = aunt.child( model()->rowCount( aunt ) - 1, 0 );
- else
- resultingIndex = aunt.child( 0, 0 );
- if( !resultingIndex.isValid() )
- return;
- }
- selectionModel()->setCurrentIndex( resultingIndex, QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows );
- selectionModel()->select( resultingIndex, QItemSelectionModel::ClearAndSelect );
+ return;
+ }
+}
+
+void BufferView::nextBuffer()
+{
+ changeBuffer(Forward);
+}
+
+void BufferView::previousBuffer()
+{
+ changeBuffer(Backward);
+}
+
+void BufferView::changeBuffer(Direction direction)
+{
+ QModelIndex currentIndex = selectionModel()->currentIndex();
+ QModelIndex resultingIndex;
+
+ QModelIndex lastNetIndex = model()->index(model()->rowCount() - 1, 0, QModelIndex());
+
+ if (currentIndex.parent().isValid()) {
+ // If we are a child node just switch among siblings unless it's the first/last child
+ resultingIndex = currentIndex.sibling(currentIndex.row() + direction, 0);
+
+ if (!resultingIndex.isValid()) {
+ QModelIndex parent = currentIndex.parent();
+ if (direction == Backward)
+ resultingIndex = parent;
+ else
+ resultingIndex = parent.sibling(parent.row() + direction, 0);
+ }
+ }
+ else {
+ // If we have a toplevel node, try and get an adjacent child
+ if (direction == Backward) {
+ QModelIndex newParent = currentIndex.sibling(currentIndex.row() - 1, 0);
+ if (currentIndex.row() == 0)
+ newParent = lastNetIndex;
+ if (model()->hasChildren(newParent)) {
+ // Treat an invalid QAbstractItemModel as an invalid QModelIndex
+ resultingIndex = (newParent.model() ? newParent.model()->index(model()->rowCount(newParent) - 1, 0, newParent) : QModelIndex());
+ }
+ else
+ resultingIndex = newParent;
+ }
+ else {
+ if (model()->hasChildren(currentIndex)) {
+ // Treat an invalid QAbstractItemModel as an invalid QModelIndex
+ resultingIndex = (currentIndex.model() ? currentIndex.model()->index(0, 0, currentIndex) : QModelIndex());
+ }
+ else
+ resultingIndex = currentIndex.sibling(currentIndex.row() + 1, 0);
+ }
+ }
+
+ if (!resultingIndex.isValid()) {
+ if (direction == Forward)
+ resultingIndex = model()->index(0, 0, QModelIndex());
+ else {
+ // Assume model is valid
+ resultingIndex = lastNetIndex.model()->index(model()->rowCount(lastNetIndex) - 1, 0, lastNetIndex);
+ }
+ }
+
+ selectionModel()->setCurrentIndex(resultingIndex, QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows);
+ selectionModel()->select(resultingIndex, QItemSelectionModel::ClearAndSelect);
+}
+
+void BufferView::selectFirstBuffer()
+{
+ int networksCount = model()->rowCount(QModelIndex());
+ if (networksCount == 0) {
+ return;
+ }
+
+ QModelIndex bufferIndex;
+ for (int row = 0; row < networksCount; row++) {
+ QModelIndex networkIndex = model()->index(row, 0, QModelIndex());
+ int childCount = model()->rowCount(networkIndex);
+ if (childCount > 0) {
+ bufferIndex = model()->index(0, 0, networkIndex);
+ break;
+ }
+ }
+
+ if (!bufferIndex.isValid()) {
+ return;
+ }