Method _groupItemFilter

packages/main/src/MultiComboBox.ts:1569–1580

* Returns true if the group header should be shown (if there is a filtered suggestion item for this group item) * @private

(item: IMultiComboBoxItem, idx: number, allItems: Array<IMultiComboBoxItem>, filteredItems: Array<IMultiComboBoxItem>)

	 * @private
	 */
	static _groupItemFilter(item: IMultiComboBoxItem, idx: number, allItems: Array<IMultiComboBoxItem>, filteredItems: Array<IMultiComboBoxItem>) {
		if (item.isGroupItem) {
			let groupHasFilteredItems;

			while (allItems[idx] && !allItems[idx].isGroupItem && !groupHasFilteredItems) {
				groupHasFilteredItems = filteredItems.indexOf(allItems[idx]) !== -1;
				idx++;
			}

			return groupHasFilteredItems;
		}
	}

	_afterOpen() {
		const action = this.open ? "open" : "close";