Merge pull request #7482 from IgniteUI/dkamburov/fix-6860

 fix(hgrid): Expose onGridInitialized output #6860

Author: kdinev

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 All notable changes for each version of this project will be documented in this file.
 
+## 9.1.1
+
+### General
+- `IgxHierarchicalGrid`
+    - `onGridInitialized` - New output has been exposed. Emitted after a grid is being initialized for the corresponding row island.
+
 ## 9.1.0
 
 ### General

projects/igniteui-angular/src/lib/grids/hierarchical-grid/README.md

@@ -177,6 +177,7 @@ Below is the list of all inputs that the developers may set to configure the gri
     |--- |--- |
     |_Event emitters_|_Notify for a change_|
     | onGridCreated | Emitted when a grid is being created for this row island | false | parentRecord: `any`, owner: `IgxRowIslandComponent`, grid: `IgxHierarchicalGridComponent` |
+    | onGridInitialized | Emitted after a grid is being initialized for this row island. The emitting is done in `ngAfterViewInit` | false | parentRecord: `any`, owner: `IgxRowIslandComponent`, grid: `IgxHierarchicalGridComponent` |
 
 
 ### Properties

projects/igniteui-angular/src/lib/grids/hierarchical-grid/child-grid-row.component.ts

@@ -160,6 +160,12 @@ private resolver;
         this.parentGrid.hgridAPI.registerChildGrid(this.rowData.rowID, this.layout.key, this.hGrid);
         this.layout.rowIslandAPI.registerChildGrid(this.rowData.rowID, this.hGrid);
 
+        this.layout.onGridInitialized.emit({
+            owner: this.layout,
+            parentID: this.rowData.rowID,
+            grid: this.hGrid
+        });
+
         this.hGrid.cdr.detectChanges();
     }
 

projects/igniteui-angular/src/lib/grids/hierarchical-grid/hierarchical-grid.spec.ts

@@ -1375,7 +1375,7 @@ export class IgxHGridRemoteOnDemandComponent {
         setTimeout(() => {
             event.grid.data = this.generateRowIslandData(5);
             event.grid.cdr.detectChanges();
-        }, 1000);
+        });
     }
 }
 

projects/igniteui-angular/src/lib/grids/hierarchical-grid/row-island.component.ts

@@ -138,6 +138,21 @@ export class IgxRowIslandComponent extends IgxHierarchicalGridBaseDirective
     @Output()
     public onGridCreated = new EventEmitter<IGridCreatedEventArgs>();
 
+    /**
+     * Emitted after a grid is being initialized for this row island.
+     * The emitting is done in `ngAfterViewInit`.
+     * ```html
+     * <igx-hierarchical-grid [data]="Data" [autoGenerate]="true">
+     *      <igx-row-island [key]="'childData'" (onGridInitialized)="gridInitialized($event)" #rowIsland>
+     *          <!-- ... -->
+     *      </igx-row-island>
+     * </igx-hierarchical-grid>
+     * ```
+     * @memberof IgxRowIslandComponent
+     */
+    @Output()
+    public onGridInitialized = new EventEmitter<IGridCreatedEventArgs>();
+
     /**
      * @hidden
      */