(self, action, data)
Does the main part of the work for undo()
Does the main part of the work for undo()
Does the main part of the work for undo ()
def _undo(self, action, data):
        """Does the main part of the work for undo()
        """
        if self.undobuffer is None:
            return
        if action == "rot":
            angle, degPAU = data
            self._rotate(-angle*degPAU/self._degreesPerAU)
            dummy = self.undobuffer.pop()
        elif action == "stamp":
            stitem = data[0]
            self.clearstamp(stitem)
        elif action == "go":
            self._undogoto(data)
        elif action in ["wri", "dot"]:
            item = data[0]
            self.screen._delete(item)
            self.items.remove(item)
        elif action == "dofill":
            item = data[0]
            self.screen._drawpoly(item, ((0, 0),(0, 0),(0, 0)),
                                  fill="", outline="")
        elif action == "beginfill":
            item = data[0]
            self._fillitem = self._fillpath = None
            if item in self.items:
                self.screen._delete(item)
                self.items.remove(item)
        elif action == "pen":
            TPen.pen(self, data[0])
            self.undobuffer.pop()
def _undo ( self , action , data ) : if self . undobuffer is None : return if action == "rot" : angle , degPAU = data self . _rotate ( - angle * degPAU / self . _degreesPerAU ) dummy = self . undobuffer . pop ( ) elif action == "stamp" : stitem = data [ 0 ] self . clearstamp ( stitem ) elif action == "go" : self . _undogoto ( data ) elif action in [ "wri" , "dot" ] : item = data [ 0 ] self . screen . _delete ( item ) self . items . remove ( item ) elif action == "dofill" : item = data [ 0 ] self . screen . _drawpoly ( item , ( ( 0 , 0 ) , ( 0 , 0 ) , ( 0 , 0 ) ) , fill = "" , outline = "" ) elif action == "beginfill" : item = data [ 0 ] self . _fillitem = self . _fillpath = None if item in self . items : self . screen . _delete ( item ) self . items . remove ( item ) elif action == "pen" : TPen . pen ( self , data [ 0 ] ) self . undobuffer . pop ( )