echarts treeHelper 源码
echarts treeHelper 代码
文件路径：/src/chart/helper/treeHelper.ts
/*
* 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.
*/
import * as zrUtil from 'zrender/src/core/util';
import SeriesModel from '../../model/Series';
import {TreeNode} from '../../data/Tree';
export function retrieveTargetInfo(
payload: {
type?: string,
targetNode?: string | TreeNode
targetNodeId?: string
},
validPayloadTypes: string[],
seriesModel: SeriesModel
) {
if (payload && zrUtil.indexOf(validPayloadTypes, payload.type) >= 0) {
const root = seriesModel.getData().tree.root;
let targetNode = payload.targetNode;
if (zrUtil.isString(targetNode)) {
targetNode = root.getNodeById(targetNode);
}
if (targetNode && root.contains(targetNode)) {
return {
node: targetNode
};
}
const targetNodeId = payload.targetNodeId;
if (targetNodeId != null && (targetNode = root.getNodeById(targetNodeId))) {
return {
node: targetNode
};
}
}
}
// Not includes the given node at the last item.
export function getPathToRoot(node: TreeNode): TreeNode[] {
const path = [];
while (node) {
node = node.parentNode;
node && path.push(node);
}
return path.reverse();
}
export function aboveViewRoot(viewRoot: TreeNode, node: TreeNode) {
const viewPath = getPathToRoot(viewRoot);
return zrUtil.indexOf(viewPath, node) >= 0;
}
// From root to the input node (the input node will be included).
export function wrapTreePathInfo<T = unknown>(node: TreeNode, seriesModel: SeriesModel) {
const treePathInfo = [];
while (node) {
const nodeDataIndex = node.dataIndex;
treePathInfo.push({
name: node.name,
dataIndex: nodeDataIndex,
value: seriesModel.getRawValue(nodeDataIndex) as T
});
node = node.parentNode;
}
treePathInfo.reverse();
return treePathInfo;
}
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