Method _keydownHandler

packages/base/src/features/F6Navigation.ts:139–185

(event: KeyboardEvent)

	}

	async _keydownHandler(event: KeyboardEvent) {
		const openUI5Support = getFeature<typeof OpenUI5Support>("OpenUI5Support");
		const isOpenUI5Detected = openUI5Support && openUI5Support.isOpenUI5Detected();

		if (isOpenUI5Detected) {
			this.destroy();
			return;
		}

		const forward = isF6Next(event);
		const backward = isF6Previous(event);
		if (!(forward || backward)) {
			return;
		}

		this.updateGroups();

		if (this.groups.length < 1) {
			return;
		}

		event.preventDefault();

		let elementToFocus;

		if (this.groups.length === 0) {
			elementToFocus = await this.groupElementToFocus(this.groups[0]);

			return elementToFocus?.focus();
		}

		let currentIndex = -1;

		if (this.selectedGroup) {
			currentIndex = this.groups.indexOf(this.selectedGroup);
		}

		if (forward) {
			elementToFocus = await this.findNextFocusableGroupElement(currentIndex);
		}

		if (backward) {
			elementToFocus = await this.findPreviousFocusableGroupElement(currentIndex);
		}

		elementToFocus?.focus();
	}

	updateGroups() {
		const container = this.findContainer();