mxGraph.prototype.isTransparentClickEvent=function(a){return!1};mxGraph.prototype.isToggleEvent=function(a){return mxClient.IS_MAC?mxEvent.isMetaDown(a):mxEvent.isControlDown(a)};mxGraph.prototype.isGridEnabledEvent=function(a){return null!=a&&!mxEvent.isAltDown(a)};mxGraph.prototype.isConstrainedEvent=function(a){return mxEvent.isShiftDown(a)};mxGraph.prototype.isIgnoreTerminalEvent=function(a){return!1};mxGraph.prototype.validationAlert=function(a){mxUtils.alert(a)};