void PlaylistView::moveItems(int steps)
{
PlaylistModel *playlistModel = dynamic_cast<PlaylistModel *>(this->model());
if (playlistModel == nullptr)
{
return;
}
QItemSelection indexList = this->selectionModel()->selection();
std::sort(indexList.begin(), indexList.end(), steps > 0 ? sortQItemSelectionDesc : sortQItemSelectionAsc);
for (QItemSelection::const_iterator i = indexList.cbegin(); i != indexList.cend(); ++i)
{
int top = i->top();
int btm = i->bottom();
int count = abs(top - btm);
int srcRow = min(top, btm);
int destRow = srcRow + steps;
QModelIndex newIdx = steps > 0 ? playlistModel->index(destRow + count, 0) : playlistModel->index(srcRow - 1, 0);
QModelIndex oldIdx = steps > 0 ? playlistModel->index(srcRow, 0) : playlistModel->index(srcRow + count, 0);
if (newIdx.isValid())
{
this->selectionModel()->select(newIdx, QItemSelectionModel::SelectionFlag::Select | QItemSelectionModel::SelectionFlag::Rows);
this->selectionModel()->select(oldIdx, QItemSelectionModel::SelectionFlag::Deselect | QItemSelectionModel::SelectionFlag::Rows);
playlistModel->moveRows(playlistModel->index(0, 0),
srcRow,
count,
playlistModel->index(playlistModel->rowCount(QModelIndex()) - 1,
playlistModel->columnCount(QModelIndex()) - 1),
destRow);
}
}
}
void TextureList::selectionChanged(const QItemSelection &selected, const QItemSelection &deselected)
{
QListView::selectionChanged(selected, deselected);
emit this->selected(selected.begin()->topLeft());
}
