function handleState(widget: Notebook, state: IState): void {
   if (state.wasFocused || widget.mode === 'edit') {
     widget.activate();
   }
   ElementExt.scrollIntoViewIfNeeded(widget.node, widget.activeCell.node);
 }

 return ArrayExt.findFirstIndex(nodes, node => {
   return ElementExt.hitTest(node, x, y);
 });

 it('should align the bottom edge for smaller size elements overlapping the bottom', () => {
   elemB.style.top = '600px';
   div.scrollTop = 50;
   ElementExt.scrollIntoViewIfNeeded(div, elemB);
   expect(div.scrollTop).to.equal(100);
 });

 let index = ArrayExt.findFirstIndex(this._crumbs, node =>
   ElementExt.hitTest(node, event.clientX, event.clientY)