Wait for callback in canExecute

Hi,

 

I have a feature action that I only want to enable if that feature has related records. The code below obviously does not work, becase the canExecute method does not wait for GetRelatedFeatures to finish.

 

Is there a way around this?

 

  this.app.command("MyCommand").register(this, (feature: geocortex.essentialsHtmlViewer.mapping.infrastructure.Feature) => { // Execute the command }, (feature: geocortex.essentialsHtmlViewer.mapping.infrastructure.Feature) => { var oid = parseInt(feature.id.get()); this.app.command("GetRelatedFeatures").execute({ mapService: feature.layer.mapService, relationshipId: 1, objectId: oid, successCallback: (results: esri.Graphic[]) => { if (results.length > 0) { // TODO } }, errorCallback: (error: Error) => { console.error(error.message); } }); return false; // ?? });