def dropMimeData( # noqa: N802
self,
mime: QMimeData,
action: Qt.DropAction,
row: int,
column: int,
parent: QModelIndex = QModelIndex) -> bool:
"""
This function unpacks QMimeData and insert them to the view where they are dropped.
Inserting is a bit complicated since sometimes we need to create a parent when it is not in the view yet:
- when child (marker gene) is dropped we insert it under the current parent (group) if it exist othervise
we crate a new parent.
- when group item is inserted it merge it with current same parent item if exist or insert it if it does
not exists
"""
if action == Qt.IgnoreAction:
return True
if not mime.hasFormat(self.MIME_TYPE):
return False
items = mime.property("_items")
if items is None:
return False
# when parent item in items remove its child since all group will be moved
items = [it for it in items if it.parentItem not in items]
self.insert_items(items)
self.data_added.emit()
return True
def canDropMimeData( # noqa: N802
self, data: QMimeData, action: Qt.DropAction, row: int, column: int, parent: QModelIndex
) -> bool:
"""
This function enable or disable drop action to the view. With current implementation we disable drop action to
the same view.
"""
if data.property("_source_id") == id(self):
return False
else:
return True