traversalHelper.js
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/**
* Traverse the tree from bottom to top and do something
* @param {module:echarts/data/Tree~TreeNode} root The real root of the tree
* @param {Function} callback
*/
function eachAfter(root, callback, separation) {
var nodes = [root];
var next = [];
var node;
while (node = nodes.pop()) { // jshint ignore:line
next.push(node);
if (node.isExpand) {
var children = node.children;
if (children.length) {
for (var i = 0; i < children.length; i++) {
nodes.push(children[i]);
}
}
}
}
while (node = next.pop()) { // jshint ignore:line
callback(node, separation);
}
}
/**
* Traverse the tree from top to bottom and do something
* @param {module:echarts/data/Tree~TreeNode} root The real root of the tree
* @param {Function} callback
*/
function eachBefore(root, callback) {
var nodes = [root];
var node;
while (node = nodes.pop()) { // jshint ignore:line
callback(node);
if (node.isExpand) {
var children = node.children;
if (children.length) {
for (var i = children.length - 1; i >= 0; i--) {
nodes.push(children[i]);
}
}
}
}
}
export { eachAfter, eachBefore };