Method _handleArrowNav

packages/compat/src/Table.ts:623–663

(e: KeyboardEvent)

	}

	_handleArrowNav(e: KeyboardEvent) {
		const isRowFocused = this.currentElement!.localName === "tr";

		if (!isRowFocused) {
			return;
		}

		const previouslySelectedRows: Array<ITableRow> = this.selectedRows;
		const currentItem: ITableRow = this.currentItem;
		const currentItemIdx: number = this.currentItemIdx;

		const prevItemIdx = currentItemIdx - 1;
		const nextItemIdx = currentItemIdx + 1;

		const prevItem: ITableRow = this.rows[prevItemIdx];
		const nextItem: ITableRow = this.rows[nextItemIdx];
		const wasSelected = !!currentItem.selected;

		if ((isUpShift(e) && !prevItem) || (isDownShift(e) && !nextItem)) {
			return;
		}

		if (isUpShift(e)) {
			currentItem.selected = currentItem.selected && !prevItem.selected;
			prevItem.selected = currentItem.selected || (wasSelected && !currentItem.selected);
			prevItem.focus();
		}

		if (isDownShift(e)) {
			currentItem.selected = currentItem.selected && !nextItem.selected;
			nextItem.selected = currentItem.selected || (wasSelected && !currentItem.selected);
			nextItem.focus();
		}

		const selectedRows = this.selectedRows;

		this.fireDecoratorEvent("selection-change", {
			selectedRows,
			previouslySelectedRows,
		});
	}

	_handleHomeEndSelection(e: KeyboardEvent) {
		const isRowFocused = this.currentElement!.localName === "tr";