+void BufferView::previousBuffer()
+{
+ changeBuffer(Backward);
+}
+
+
+void BufferView::changeBuffer(Direction direction)
+{
+ QModelIndex currentIndex = selectionModel()->currentIndex();
+ QModelIndex resultingIndex;
+
+ 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 (model()->hasChildren(newParent))
+ resultingIndex = newParent.child(model()->rowCount(newParent) - 1, 0);
+ else
+ resultingIndex = newParent;
+ }
+ else {
+ if (model()->hasChildren(currentIndex))
+ resultingIndex = currentIndex.child(0, 0);
+ else
+ resultingIndex = currentIndex.sibling(currentIndex.row() + 1, 0);
+ }
+ }
+
+ if (!resultingIndex.isValid())
+ return;
+
+ 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;
+ }
+
+ selectionModel()->setCurrentIndex(bufferIndex, QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows);
+ selectionModel()->select(bufferIndex, QItemSelectionModel::ClearAndSelect);
+}
+
+void BufferView::wheelEvent(QWheelEvent *event)
+{
+ if (ItemViewSettings().mouseWheelChangesBuffer() == (bool)(event->modifiers() & Qt::AltModifier))
+ return TreeViewTouch::wheelEvent(event);
+
+ int rowDelta = (event->delta() > 0) ? -1 : 1;
+ changeBuffer((Direction)rowDelta);
+}
+