feat(hierarchical-grid): add parentRowData to IGridCreatedEventArgs (#15658)

* feat(hierarchical-grid): add parentRowData to IGridCreatedEventArgs

* chore(*): Always include parentRowData in the arguments

* chore(*): clean up leftover

---------

Co-authored-by: Hristo <[email protected]>

Author: viktorkombov

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

@@ -7,4 +7,5 @@ export interface IGridCreatedEventArgs extends IBaseEventArgs {
     owner: IgxRowIslandComponent;
     parentID: any;
     grid: IgxHierarchicalGridComponent;
+    parentRowData?: any;
 }

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

@@ -214,7 +214,8 @@ export class IgxChildGridRowComponent implements AfterViewInit, OnInit {
         this.layout.gridCreated.emit({
             owner: this.layout,
             parentID: this.data.rowID,
-            grid: this.hGrid
+            grid: this.hGrid,
+            parentRowData: this.data.parentRowData,
         });
     }
 
@@ -231,7 +232,8 @@ export class IgxChildGridRowComponent implements AfterViewInit, OnInit {
         this.layout.gridInitialized.emit({
             owner: this.layout,
             parentID: this.data.rowID,
-            grid: this.hGrid
+            grid: this.hGrid,
+            parentRowData: this.data.parentRowData,
         });
 
         this.hGrid.cdr.detectChanges();

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

@@ -49,7 +49,7 @@ export class IgxGridHierarchicalPipe implements PipeTransform {
                 childGridsData[childKey] = childData;
             });
             if (grid.gridAPI.get_row_expansion_state(v)) {
-                result.push({ rowID: primaryKey ? v[primaryKey] : v, childGridsData });
+                result.push({ rowID: primaryKey ? v[primaryKey] : v, childGridsData, parentRowData: v });
             }
         });
         return result;

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

@@ -1119,6 +1119,22 @@ describe('Basic IgxHierarchicalGrid #hGrid', () => {
             expect(getterSpy).toHaveBeenCalledTimes(7);
             expect(summaryCell.textContent.trim()).toEqual('');
         }));
+
+        it('should verify gridCreated and gridInitialized events emit correct parentRowData', () => {
+            const row = hierarchicalGrid.gridAPI.get_row_by_index(0) as IgxHierarchicalRowComponent;
+            const rowIsland = fixture.componentInstance.rowIsland1;
+
+            spyOn(rowIsland.gridCreated, 'emit').and.callThrough();
+            spyOn(rowIsland.gridInitialized, 'emit').and.callThrough();
+
+            UIInteractions.simulateClickAndSelectEvent(row.expander);
+            fixture.detectChanges();
+
+            expect(rowIsland.gridCreated.emit).toHaveBeenCalledTimes(1);
+            expect(rowIsland.gridCreated.emit).toHaveBeenCalledWith(jasmine.objectContaining({ parentRowData: row.data }));
+            expect(rowIsland.gridInitialized.emit).toHaveBeenCalledTimes(1);
+            expect(rowIsland.gridInitialized.emit).toHaveBeenCalledWith(jasmine.objectContaining({ parentRowData: row.data }));
+        });
     });
 
     describe('IgxHierarchicalGrid Children Sizing #hGrid', () => {