Edge widget message warning

@@ -20,6 +20,9 @@
     <div *ngIf="customerTitle" fxLayout="row">
       <span class="mat-subheader">{{ customerTitle }}</span>
     </div>
+    <div *ngIf="!isDatasourceEdgeType" fxLayout="row">
+      <span class="mat-subheader" translate>edge.widget-datasource-error</span>
+    </div>
     <div fxFlex class="tb-entities-nav-tree-panel">
       <tb-nav-tree
         [loadNodes]="loadNodes"

@@ -54,6 +54,7 @@ export class EdgesOverviewWidgetComponent extends PageComponent implements OnIni
 
   public toastTargetId = 'edges-overview-' + this.utils.guid();
   public customerTitle: string = null;
+  public isDatasourceEdgeType: boolean = true;
 
   private widgetConfig: WidgetConfig;
   private subscription: IWidgetSubscription;
@@ -91,7 +92,7 @@ export class EdgesOverviewWidgetComponent extends PageComponent implements OnIni
       } else if (datasource.type === DatasourceType.function) {
         cb(this.loadNodesForEdge(datasource.entityId, datasource.entity));
       } else {
-        this.ctx.showErrorToast(this.translateService.instant('edge.widget-datasource-error'));
+        this.isDatasourceEdgeType = false;
         cb([]);
       }
     }

@@ -1288,7 +1288,7 @@
         "sync-process-started-successfully": "Sync process started successfully!",
         "missing-related-rule-chains-title": "Edge has missing related rule chain(s)",
         "missing-related-rule-chains-text": "Assigned to edge rule chain(s) use rule nodes that forward message(s) to rule chain(s) that are not assigned to this edge. <br><br> List of missing rule chain(s): <br> {{missingRuleChains}}",
-        "widget-datasource-error": "This widget supports only EDGE entity"
+        "widget-datasource-error": "This widget supports only EDGE entity datasource"
     },
     "edge-event": {
         "type-dashboard": "Dashboard",