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Fix persistent indexes when rearranging the playlist

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This commit is contained in:
David Sansome 2010-02-03 21:26:54 +00:00
parent d9727f2731
commit 8da8b04813
1 changed files with 18 additions and 4 deletions
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22
src/playlist.cpp
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@ -182,11 +182,25 @@ bool Playlist::dropMimeData(const QMimeData* data, Qt::DropAction action, int ro
const int start = row == -1 ? items_.count() : row; const int start = row == -1 ? items_.count() : row;
for (int i=start ; i<start+moved_items.count() ; ++i) { for (int i=start ; i<start+moved_items.count() ; ++i) {
items_.insert(i, moved_items[i - start]); items_.insert(i, moved_items[i - start]);
}
// Update persistent indexes // Update persistent indexes
for (int column=0 ; column<ColumnCount ; ++column) foreach (const QModelIndex& pidx, persistentIndexList()) {
changePersistentIndex(index(source_rows[i-start], column, QModelIndex()), const int dest_offset = source_rows.indexOf(pidx.row());
index(i, column, QModelIndex())); if (dest_offset != -1) {
// This index was moved
changePersistentIndex(pidx, index(start + dest_offset, pidx.column(), QModelIndex()));
} else {
int d = 0;
foreach (int source_row, source_rows) {
if (pidx.row() > source_row)
d --;
}
if (pidx.row() + d >= start)
d += source_rows.count();
changePersistentIndex(pidx, index(pidx.row() + d, pidx.column(), QModelIndex()));
}
} }
layoutChanged(); layoutChanged();