a.bounds.width/2,e-a.bounds.height/2)};mxConnectionHandler.prototype.destroyIcons=function(){if(null!=this.icons){for(var a=0;a<this.icons.length;a++)this.icons[a].destroy();this.iconState=this.selectedIcon=this.icon=this.icons=null}};mxConnectionHandler.prototype.isStartEvent=function(a){return null!=this.constraintHandler.currentFocus&&null!=this.constraintHandler.currentConstraint||null!=this.previous&&null==this.error&&(null==this.icons||null!=this.icons&&null!=this.icon)};