fix(filtering): Refine elem class search #9333 (#9386)

* fix(filtering): Refine elem class search #9333

* test(filtering): Adding test #9333

# Conflicts:
#	projects/igniteui-angular/src/lib/grids/grid/grid-filtering-ui.spec.ts

Co-authored-by: Galina Edinakova <[email protected]>

Author: astaev

projects/igniteui-angular/src/lib/grids/filtering/base/grid-filtering-row.component.ts

@@ -446,7 +446,7 @@ export class IgxGridFilteringRowComponent implements AfterViewInit {
         requestAnimationFrame(() => {
             const focusedElement = document.activeElement;
 
-            if (focusedElement.className === 'igx-chip__remove' || focusedElement.tagName === 'IGX-DAY-ITEM') {
+            if (focusedElement.classList.contains('igx-chip__remove') || focusedElement.tagName === 'IGX-DAY-ITEM') {
                 return;
             }
 

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

@@ -48,6 +48,8 @@ import { GridSelectionMode, FilterMode } from '../common/enums';
 import { ControlsFunction } from '../../test-utils/controls-functions.spec';
 import localeFR from '@angular/common/locales/fr';
 import { FormattedValuesFilteringStrategy } from '../../data-operations/filtering-strategy';
+import { IgxCalendarComponent } from '../../calendar/calendar.component';
+import { IgxInputGroupComponent } from '../../input-group/public_api';
 
 const DEBOUNCETIME = 30;
 const FILTER_UI_ROW = 'igx-grid-filtering-row';
@@ -2180,6 +2182,28 @@ describe('IgxGrid - Filtering Row UI actions #grid', () => {
             const rows = GridFunctions.getRows(fix);
             expect(rows.length).toEqual(2);
         }));
+
+        it('Should remove pending chip via its close button #9333', fakeAsync(() => {
+            GridFunctions.clickFilterCellChipUI(fix, 'Downloads');
+            fix.detectChanges();
+
+            GridFunctions.typeValueInFilterRowInput('3', fix);
+            tick(DEBOUNCETIME);
+            const inputGroup = fix.debugElement.query(By.directive(IgxInputGroupComponent));
+            const filterRow = fix.debugElement.query(By.directive(IgxGridFilteringRowComponent));
+            const pendingChip = filterRow.queryAll(By.directive(IgxChipComponent))[0];
+            const chipCloseButton = pendingChip.query(By.css('div.igx-chip__remove')).nativeElement;
+
+            chipCloseButton.dispatchEvent(new Event('mousedown'));
+            inputGroup.nativeElement.dispatchEvent(new Event('focusout'));
+            chipCloseButton.dispatchEvent(new Event('mouseup'));
+            chipCloseButton.dispatchEvent(new Event('click'));
+            tick(DEBOUNCETIME);
+            fix.detectChanges();
+
+            const chips = filterRow.queryAll(By.directive(IgxChipComponent));
+            expect(chips.length).toEqual(0, 'No chips should be present');
+        }));
     });
 
     describe('Integration scenarios', () => {