Merge pull request #15921 from IgniteUI/mkirkova/feat-combo-toggle-button-20.x

ChronosSF · web-flow · commit df8004e29182 · 2025-07-21T14:06:39.000+03:00
Make toggle button focusable and add aria label to the combo input
diff --git a/projects/igniteui-angular-i18n/src/i18n/BG/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/BG/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsBG = {
     igx_combo_empty_message: 'Списъкът е празен',
     igx_combo_filter_search_placeholder: 'Въведете термин за търсене',
     igx_combo_addCustomValues_placeholder: 'Добавяне на елемент',
-    igx_combo_clearItems_placeholder: 'Изчистване на избора'
+    igx_combo_clearItems_placeholder: 'Изчистване на избора',
+    igx_combo_aria_label_options: 'Има избрани опции',
+    igx_combo_aria_label_no_options: 'Няма избрани опции'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/CS/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/CS/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsCS = {
     igx_combo_empty_message: 'Seznam je prázdný',
     igx_combo_filter_search_placeholder: 'Zadejte hledaný výraz',
     igx_combo_addCustomValues_placeholder: 'Přidat položku',
-    igx_combo_clearItems_placeholder: 'Vymazat výběr'
+    igx_combo_clearItems_placeholder: 'Vymazat výběr',
+    igx_combo_aria_label_options: 'Vybrané možnosti',
+    igx_combo_aria_label_no_options: 'Žádné možnosti nejsou vybrány'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/DA/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/DA/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsDA = {
     igx_combo_empty_message: 'Listen er tom',
     igx_combo_filter_search_placeholder: 'Indtast en søgeterm',
     igx_combo_addCustomValues_placeholder: 'Tilføj element',
-    igx_combo_clearItems_placeholder: 'Ryd markering'
+    igx_combo_clearItems_placeholder: 'Ryd markering',
+    igx_combo_aria_label_options: 'Valgte muligheder',
+    igx_combo_aria_label_no_options: 'Ingen valgte muligheder'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/DE/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/DE/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsDE = {
     igx_combo_empty_message: 'Die Liste ist leer',
     igx_combo_filter_search_placeholder: 'Suchbegriff eingeben',
     igx_combo_addCustomValues_placeholder: 'Element hinzufügen',
-    igx_combo_clearItems_placeholder: 'Auswahl löschen'
+    igx_combo_clearItems_placeholder: 'Auswahl löschen',
+    igx_combo_aria_label_options: 'Ausgewählte Optionen',
+    igx_combo_aria_label_no_options: 'Keine Optionen ausgewählt'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/ES/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/ES/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsES = {
     igx_combo_empty_message: 'La lista está vacía',
     igx_combo_filter_search_placeholder: 'Escriba un término de búsqueda',
     igx_combo_addCustomValues_placeholder: 'Agregar elemento',
-    igx_combo_clearItems_placeholder: 'Borrar selección'
+    igx_combo_clearItems_placeholder: 'Borrar selección',
+    igx_combo_aria_label_options: 'Opciones seleccionadas',
+    igx_combo_aria_label_no_options: 'No hay opciones seleccionadas'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/FR/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/FR/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsFR = {
     igx_combo_empty_message: 'La liste est vide',
     igx_combo_filter_search_placeholder: 'Entrez un terme de recherche',
     igx_combo_addCustomValues_placeholder: 'Ajouter un élément',
-    igx_combo_clearItems_placeholder: 'Effacer la sélection'
+    igx_combo_clearItems_placeholder: 'Effacer la sélection',
+    igx_combo_aria_label_options: 'Options sélectionnées',
+    igx_combo_aria_label_no_options: 'Aucune option sélectionnée'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/HU/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/HU/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsHU = {
     igx_combo_empty_message: 'Üres a lista',
     igx_combo_filter_search_placeholder: 'Írjon be egy keresési kifejezést',
     igx_combo_addCustomValues_placeholder: 'Elem hozzáadása',
-    igx_combo_clearItems_placeholder: 'Kiválasztás törlése'
+    igx_combo_clearItems_placeholder: 'Kiválasztás törlése',
+    igx_combo_aria_label_options: 'Kiválasztott lehetőségek',
+    igx_combo_aria_label_no_options: 'Nincsenek kiválasztott lehetőségek'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/IT/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/IT/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsIT = {
     igx_combo_empty_message: 'L\'elenco è vuoto',
     igx_combo_filter_search_placeholder: 'Immettere il testo di ricerca',
     igx_combo_addCustomValues_placeholder: 'Aggiungi elemento',
-    igx_combo_clearItems_placeholder: 'Cancella selezione'
+    igx_combo_clearItems_placeholder: 'Cancella selezione',
+    igx_combo_aria_label_options: 'Opzioni selezionate',
+    igx_combo_aria_label_no_options: 'Nessuna opzione selezionata'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/JA/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/JA/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsJA = {
     igx_combo_empty_message: 'リストが空です',
     igx_combo_filter_search_placeholder: '検索条件の入力',
     igx_combo_addCustomValues_placeholder: '項目の追加',
-    igx_combo_clearItems_placeholder: '選択のクリア'
+    igx_combo_clearItems_placeholder: '選択のクリア',
+    igx_combo_aria_label_options: '選択されたオプション',
+    igx_combo_aria_label_no_options: '選択されたオプションはありません'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/KO/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/KO/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsKO = {
     igx_combo_empty_message: '목록이 비어 있음',
     igx_combo_filter_search_placeholder: '검색어 입력',
     igx_combo_addCustomValues_placeholder: '항목 추가',
-    igx_combo_clearItems_placeholder: '선택 지우기'
+    igx_combo_clearItems_placeholder: '선택 지우기',
+    igx_combo_aria_label_options: '선택된 옵션',
+    igx_combo_aria_label_no_options: '선택된 옵션 없음'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/NB/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/NB/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsNB = {
     igx_combo_empty_message: 'Listen er tom',
     igx_combo_filter_search_placeholder: 'Skriv inn søkeord',
     igx_combo_addCustomValues_placeholder: 'Legg til element',
-    igx_combo_clearItems_placeholder: 'Fjern valg'
+    igx_combo_clearItems_placeholder: 'Fjern valg',
+    igx_combo_aria_label_options: 'Valgte alternativer',
+    igx_combo_aria_label_no_options: 'Ingen valgte alternativer'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/NL/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/NL/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsNL = {
     igx_combo_empty_message: 'De lijst is leeg',
     igx_combo_filter_search_placeholder: 'Typ een zoekterm',
     igx_combo_addCustomValues_placeholder: 'Item toevoegen',
-    igx_combo_clearItems_placeholder: 'Selectie wissen'
+    igx_combo_clearItems_placeholder: 'Selectie wissen',
+    igx_combo_aria_label_options: 'Geselecteerde opties',
+    igx_combo_aria_label_no_options: 'Geen geselecteerde opties'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/PL/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/PL/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsPL = {
     igx_combo_empty_message: 'Lista jest pusta',
     igx_combo_filter_search_placeholder: 'Wprowadź tekst wyszukiwania',
     igx_combo_addCustomValues_placeholder: 'Dodaj element',
-    igx_combo_clearItems_placeholder: 'Wyczyść wybór'
+    igx_combo_clearItems_placeholder: 'Wyczyść wybór',
+    igx_combo_aria_label_options: 'Wybrane opcje',
+    igx_combo_aria_label_no_options: 'Brak wybranych opcji'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/PT/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/PT/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsPT = {
     igx_combo_empty_message: 'A lista está vazia',
     igx_combo_filter_search_placeholder: 'Digite um termo de pesquisa',
     igx_combo_addCustomValues_placeholder: 'Adicionar item',
-    igx_combo_clearItems_placeholder: 'Limpar seleção'
+    igx_combo_clearItems_placeholder: 'Limpar seleção',
+    igx_combo_aria_label_options: 'Opções selecionadas',
+    igx_combo_aria_label_no_options: 'Nenhuma opção selecionada'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/RO/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/RO/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsRO = {
     igx_combo_empty_message: 'Lista este goală',
     igx_combo_filter_search_placeholder: 'Introduceți termenul de căutare',
     igx_combo_addCustomValues_placeholder: 'Adăugați element',
-    igx_combo_clearItems_placeholder: 'Ștergeți selecția'
+    igx_combo_clearItems_placeholder: 'Ștergeți selecția',
+    igx_combo_aria_label_options: 'Opțiuni selectate',
+    igx_combo_aria_label_no_options: 'Nicio opțiune selectată'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/SV/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/SV/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsSV = {
     igx_combo_empty_message: 'Listan är tom',
     igx_combo_filter_search_placeholder: 'Ange sökterm',
     igx_combo_addCustomValues_placeholder: 'Lägg till objekt',
-    igx_combo_clearItems_placeholder: 'Rensa urval'
+    igx_combo_clearItems_placeholder: 'Rensa urval',
+    igx_combo_aria_label_options: 'Valda alternativ',
+    igx_combo_aria_label_no_options: 'Inga valda alternativ'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/TR/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/TR/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsTR = {
     igx_combo_empty_message: 'Liste boş',
     igx_combo_filter_search_placeholder: 'Arama terimi girin',
     igx_combo_addCustomValues_placeholder: 'Öğe ekle',
-    igx_combo_clearItems_placeholder: 'Seçimi temizle'
+    igx_combo_clearItems_placeholder: 'Seçimi temizle',
+    igx_combo_aria_label_options: 'Seçilen seçenekler',
+    igx_combo_aria_label_no_options: 'Seçilen seçenek yok'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/ZH-HANS/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/ZH-HANS/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsZHHANS = {
     igx_combo_empty_message: '列表为空',
     igx_combo_filter_search_placeholder: '输入搜索字符串',
     igx_combo_addCustomValues_placeholder: '添加项目',
-    igx_combo_clearItems_placeholder: '清除选择'
+    igx_combo_clearItems_placeholder: '清除选择',
+    igx_combo_aria_label_options: '选定的选项',
+    igx_combo_aria_label_no_options: '没有选定的选项'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular-i18n/src/i18n/ZH-HANT/combo-resources.ts b/projects/igniteui-angular-i18n/src/i18n/ZH-HANT/combo-resources.ts
@@ -8,5 +8,7 @@ export const ComboResourceStringsZHHANT = {
     igx_combo_empty_message: '清單是空的',
     igx_combo_filter_search_placeholder: '輸入搜尋字串',
     igx_combo_addCustomValues_placeholder: '新增項目',
-    igx_combo_clearItems_placeholder: '清除選擇'
+    igx_combo_clearItems_placeholder: '清除選擇',
+    igx_combo_aria_label_options: '已選擇的選項',
+    igx_combo_aria_label_no_options: '沒有已選擇的選項'
 } satisfies MakeRequired<IComboResourceStrings>;
diff --git a/projects/igniteui-angular/src/lib/combo/combo.common.ts b/projects/igniteui-angular/src/lib/combo/combo.common.ts
@@ -1230,6 +1230,20 @@ export abstract class IgxComboBaseDirective implements IgxComboBase, AfterViewCh
         }
     }
 
+    /** @hidden @internal */
+    public handleToggleKeyDown(eventArgs: KeyboardEvent) {
+        if (eventArgs.key === 'Enter' || eventArgs.key === ' ') {
+            eventArgs.preventDefault();
+            this.toggle();
+        }
+    }
+
+    /** @hidden @internal */
+    public getAriaLabel(): string {
+        return this.displayValue ? this.resourceStrings.igx_combo_aria_label_options : this.resourceStrings.igx_combo_aria_label_no_options;
+    }
+
+
     /** @hidden @internal */
     public registerOnChange(fn: any): void {
         this._onChangeCallback = fn;
diff --git a/projects/igniteui-angular/src/lib/combo/combo.component.html b/projects/igniteui-angular/src/lib/combo/combo.component.html
@@ -13,6 +13,7 @@
         role="combobox" aria-haspopup="listbox"
         [attr.aria-expanded]="!dropdown.collapsed" [attr.aria-controls]="dropdown.listId"
         [attr.aria-labelledby]="ariaLabelledBy || label?.id || placeholder"
+        [attr.aria-label]="getAriaLabel()"
         (blur)="onBlur()" />
     <ng-container ngProjectAs="igx-suffix">
         <ng-content select="igx-suffix,[igxSuffix]"></ng-content>
@@ -28,7 +29,7 @@
             }
         </igx-suffix>
     }
-    <igx-suffix class="igx-combo__toggle-button">
+    <igx-suffix class="igx-combo__toggle-button" (keydown)="handleToggleKeyDown($event)" [tabindex]="disabled ? -1 : 0" role="button">
         @if (toggleIconTemplate) {
             <ng-container *ngTemplateOutlet="toggleIconTemplate; context: {$implicit: collapsed}"></ng-container>
         }
diff --git a/projects/igniteui-angular/src/lib/combo/combo.component.spec.ts b/projects/igniteui-angular/src/lib/combo/combo.component.spec.ts
@@ -1058,6 +1058,7 @@ describe('igxCombo', () => {
                 expect(input.nativeElement.getAttribute('aria-expanded')).toMatch('false');
                 expect(input.nativeElement.getAttribute('aria-controls')).toEqual(combo.dropdown.listId);
                 expect(input.nativeElement.getAttribute('aria-labelledby')).toEqual(combo.placeholder);
+                expect(input.nativeElement.getAttribute('aria-label')).toEqual('No options selected');
 
                 const dropdown = fixture.debugElement.query(By.css(`div[role="listbox"]`));
                 expect(dropdown.nativeElement.getAttribute('aria-labelledby')).toEqual(combo.placeholder);
@@ -1079,6 +1080,10 @@ describe('igxCombo', () => {
                 tick();
                 fixture.detectChanges();
                 expect(list.nativeElement.getAttribute('aria-activedescendant')).toEqual(combo.dropdown.focusedItem.id);
+
+                combo.select(['Illinois', 'Mississippi', 'Ohio']);
+                fixture.detectChanges();
+                expect(input.nativeElement.getAttribute('aria-label')).toEqual('Selected options');
             }));
             it('should render aria-expanded attribute properly', fakeAsync(() => {
                 expect(input.nativeElement.getAttribute('aria-expanded')).toMatch('false');
@@ -2269,6 +2274,22 @@ describe('igxCombo', () => {
                         cancel: false
                     });
             });
+            it('should toggle combo dropdown on Enter of the focused toggle icon', fakeAsync(() => {
+                spyOn(combo, 'toggle').and.callThrough();
+                const toggleBtn = fixture.debugElement.query(By.css(`.${CSS_CLASS_TOGGLEBUTTON}`));
+
+                UIInteractions.triggerEventHandlerKeyDown('Enter', toggleBtn);
+                tick();
+                fixture.detectChanges();
+                expect(combo.toggle).toHaveBeenCalledTimes(1);
+                expect(combo.collapsed).toEqual(false);
+
+                UIInteractions.triggerEventHandlerKeyDown('Enter', toggleBtn);
+                tick();
+                fixture.detectChanges();
+                expect(combo.toggle).toHaveBeenCalledTimes(2);
+                expect(combo.collapsed).toEqual(true);
+            }));
             it('should clear the selection on Enter of the focused clear icon', () => {
                 const selectedItem_1 = combo.dropdown.items[1];
                 combo.toggle();
diff --git a/projects/igniteui-angular/src/lib/core/i18n/combo-resources.ts b/projects/igniteui-angular/src/lib/core/i18n/combo-resources.ts
@@ -3,12 +3,15 @@ export interface IComboResourceStrings {
     igx_combo_filter_search_placeholder?: string;
     igx_combo_addCustomValues_placeholder?: string;
     igx_combo_clearItems_placeholder?: string;
+    igx_combo_aria_label_options?: string;
+    igx_combo_aria_label_no_options?: string;
 }
 
 export const ComboResourceStringsEN: IComboResourceStrings = {
     igx_combo_empty_message: 'The list is empty',
     igx_combo_filter_search_placeholder: 'Enter a Search Term',
     igx_combo_addCustomValues_placeholder: 'Add Item',
-    igx_combo_clearItems_placeholder: 'Clear Selection'
-
+    igx_combo_clearItems_placeholder: 'Clear Selection',
+    igx_combo_aria_label_options: 'Selected options',
+    igx_combo_aria_label_no_options: 'No options selected'
 };
diff --git a/projects/igniteui-angular/src/lib/core/styles/components/combo/_combo-theme.scss b/projects/igniteui-angular/src/lib/core/styles/components/combo/_combo-theme.scss
@@ -314,6 +314,10 @@
         %igx-combo__toggle-button {
             color: var-get($theme, 'toggle-button-foreground-focus');
             background: var-get($theme, 'toggle-button-background-focus');
+
+            &:focus {
+                color: color($color: 'secondary');
+            }
         }
 
         %igx-combo__clear-button {
diff --git a/projects/igniteui-angular/src/lib/query-builder/query-builder-functions.spec.ts b/projects/igniteui-angular/src/lib/query-builder/query-builder-functions.spec.ts
@@ -626,20 +626,21 @@ export class QueryBuilderFunctions {
             switch (i) {
                 case 0: expect(element).toHaveClass('igx-input-group__input'); break;
                 case 1: expect(element).toHaveClass('igx-input-group__input'); break;
-                case 2: expect(element).toHaveClass('igx-button');
+                case 2: expect(element).toHaveClass('igx-combo__toggle-button'); break;
+                case 3: expect(element).toHaveClass('igx-button');
                     expect(element.innerText).toContain('and'); break;
-                case 3: expect(element).toHaveClass('igx-chip'); break;
-                case 4: expect(element).toHaveClass('igx-icon'); break;
-                case 5: expect(element).toHaveClass('igx-chip__remove'); break;
-                case 6: expect(element).toHaveClass('igx-chip'); break;
-                case 7: expect(element).toHaveClass('igx-icon'); break;
-                case 8: expect(element).toHaveClass('igx-chip__remove'); break;
-                case 9: expect(element).toHaveClass('igx-chip'); break;
-                case 10: expect(element).toHaveClass('igx-icon'); break;
-                case 11: expect(element).toHaveClass('igx-chip__remove'); break;
-                case 12: expect(element).toHaveClass('igx-button');
-                    expect(element.innerText).toContain('Condition'); break;
+                case 4: expect(element).toHaveClass('igx-chip'); break;
+                case 5: expect(element).toHaveClass('igx-icon'); break;
+                case 6: expect(element).toHaveClass('igx-chip__remove'); break;
+                case 7: expect(element).toHaveClass('igx-chip'); break;
+                case 8: expect(element).toHaveClass('igx-icon'); break;
+                case 9: expect(element).toHaveClass('igx-chip__remove'); break;
+                case 10: expect(element).toHaveClass('igx-chip'); break;
+                case 11: expect(element).toHaveClass('igx-icon'); break;
+                case 12: expect(element).toHaveClass('igx-chip__remove'); break;
                 case 13: expect(element).toHaveClass('igx-button');
+                    expect(element.innerText).toContain('Condition'); break;
+                case 14: expect(element).toHaveClass('igx-button');
                     expect(element.innerText).toContain('Group'); break;
             }
             i++;
diff --git a/projects/igniteui-angular/src/lib/simple-combo/simple-combo.component.html b/projects/igniteui-angular/src/lib/simple-combo/simple-combo.component.html
@@ -17,6 +17,7 @@
         [attr.aria-expanded]="!this.dropdown.collapsed" [attr.aria-controls]="this.dropdown.listId"
         [attr.aria-labelledby]="this.ariaLabelledBy || this.label?.id || this.placeholder"
         [attr.placeholder]="placeholder" [disabled]="disabled" [igxTextSelection]="!composing"
+        [attr.aria-label]="getAriaLabel()"
         (input)="handleInputChange($event)" (click)="handleInputClick()"
         (keyup)="handleKeyUp($event)" (keydown)="handleKeyDown($event)" (blur)="onBlur()" (paste)="handleInputChange($event)"/>
 
@@ -44,7 +45,8 @@
         </igx-suffix>
     }
 
-    <igx-suffix class="igx-combo__toggle-button" (click)="onClick($event)">
+    <igx-suffix class="igx-combo__toggle-button" (click)="onClick($event)" (keydown)="handleToggleKeyDown($event)"
+        [tabindex]="disabled ? -1 : 0" role="button">
         @if (toggleIconTemplate) {
             <ng-container *ngTemplateOutlet="toggleIconTemplate; context: {$implicit: collapsed}"></ng-container>
         }
diff --git a/projects/igniteui-angular/src/lib/simple-combo/simple-combo.component.spec.ts b/projects/igniteui-angular/src/lib/simple-combo/simple-combo.component.spec.ts
