def supportedDragActions(self):
        if self.owner.role == 'search':
            return QtCore.Qt.CopyAction
        if self.owner.role == 'playlist':
            return QtCore.Qt.MoveAction

    def flags(self, index):
        defaultFlags = QtCore.QAbstractItemModel.flags(self, index)

        if index.isValid():
            return QtCore.Qt.ItemIsDragEnabled | defaultFlags | QtCore.Qt.ItemIsDropEnabled
        else:
            return QtCore.Qt.ItemIsDropEnabled | defaultFlags

    def supportedDropActions(self):
        if self.owner.role == 'search':
            return QtCore.Qt.IgnoreAction
        if self.owner.role == 'playlist':
            return QtCore.Qt.MoveAction | QtCore.Qt.CopyAction