fix textblock selection

            blk_item.update()

    def set_blkitems_selection(self, selected: bool, blk_items: List[TextBlkItem] = None):

        self.canvas.block_selection_signal = True

        if blk_items is None:

            blk_items = self.textblk_item_list

        for blk_item in blk_items:

            blk_item.setSelected(selected)

        self.canvas.block_selection_signal = False

        self.on_incanvas_selection_changed()

    def on_ensure_textitem_svisible(self):

        edit: Union[TransTextEdit, SourceTextEdit] = self.sender()