def setGlobalCompositeOperation(self, gco):
        gco = gco.strip()
        if gco.lower == GWTCanvasConsts.SOURCE_OVER:
            self.context.globalCompositeOperation = SOURCE_OVER
        elif gco.lower == GWTCanvasConsts.DESTINATION_OVER:
            self.context.globalCompositeOperation = DESTINATION_OVER
dataset/ETHPy150Open anandology/pyjamas/library/gwt/Canvas/GWTCanvasImplIE6.py/GWTCanvasImplIE6.setGlobalCompositeOperation/original