Method _prepareTreeItems

packages/main/src/Tree.ts:453–464

()

	}

	_prepareTreeItems() {
		// set level to tree items
		this.walk((item, level, index) => {
			const parent = item.parentNode;
			const ariaSetSize = (parent && parent.children.length) || this.items.length;

			item.setAttribute("level", level.toString());

			item.forcedSetsize = ariaSetSize;
			item.forcedPosinset = index + 1;
		});
	}

	/**
	 * Returns the corresponding list item for a given tree item