def item_activate(extend: bool=True, extend_range: bool=False, deselect_all:
    bool=False):
    """Handle mouse clicks to select and activate items 

    :param extend: Extend, Extend selection for activation 
    :type extend: bool
    :param extend_range: Extend Range, Select a range from active element 
    :type extend_range: bool
    :param deselect_all: Deselect On Nothing, Deselect all when nothing under the cursor 
    :type deselect_all: bool
    """
    pass
