import { SLIDER_TREE_ITEM } from "./interface.uts"
/**
 * 当前树有多少个被选中了。
 */
export function getTreeSelectedNum(item: SLIDER_TREE_ITEM[],target:Set<string>):number{
	let inx = 0;
	function jshz(tree : SLIDER_TREE_ITEM[]) {
		for (let i = 0; i < tree.length; i++) {
			let item = tree[i]
			if (item.children.length > 0) {
				jshz(item.children)
			} else if (target.has(item.id)) {
				inx += 1
			}
		}
	}
	jshz(item)
	return inx;
}

/**
 * 根据目标节点，过滤掉父节点。
 * @param item 
 * @param target 
 */
export function filterParentNode(item: SLIDER_TREE_ITEM[],target:Set<string>):string[]{
	function jshz(tree : SLIDER_TREE_ITEM[]):string[] {
		let arr = [] as string[]
		for (let i = 0; i < tree.length; i++) {
			let items = tree[i]
			if (items.children.length > 0) {
				arr = arr.concat(jshz(items.children))
			}else if (target.has(items.id)) {
				arr.push(items.id)
			}
		}
		return arr;
	}
	return jshz(item)
}