mxConnectionHandler.prototype.drawPreview=function(){this.updatePreview(null==this.error);null!=this.edgeState&&(this.edgeState.shape=this.shape,this.graph.cellRenderer.postConfigureShape(this.edgeState),this.edgeState.shape=null);this.shape.redraw()};mxConnectionHandler.prototype.updatePreview=function(a){this.shape.strokewidth=this.getEdgeWidth(a);this.shape.stroke=this.getEdgeColor(a)};mxConnectionHandler.prototype.getEdgeColor=function(a){return a?mxConstants.VALID_COLOR:mxConstants.INVALID_COLOR};