Returns selected cells in grid as Selection object

def get_selection(self):
        """Returns selected cells in grid as Selection object"""

        # GetSelectedCells: individual cells selected by ctrl-clicking
        # GetSelectedRows: rows selected by clicking on the labels
        # GetSelectedCols: cols selected by clicking on the labels
        # GetSelectionBlockTopLeft
        # GetSelectionBlockBottomRight: For blocks selected by dragging
        # across the grid cells.

        block_top_left = self.grid.GetSelectionBlockTopLeft()
        block_bottom_right = self.grid.GetSelectionBlockBottomRight()
        rows = self.grid.GetSelectedRows()
        cols = self.grid.GetSelectedCols()
        cells = self.grid.GetSelectedCells()

        return Selection(block_top_left, block_bottom_right, rows, cols, cells)