echarts/src/chart/helper/treeHelper.js

A powerful charting and visualization library for browser

import * as zrUtil from 'zrender/src/core/util';

export function retrieveTargetInfo(payload, validPayloadTypes, seriesModel) {
    if (payload && zrUtil.indexOf(validPayloadTypes, payload.type) >= 0) {
        var root = seriesModel.getData().tree.root;
        var targetNode = payload.targetNode;
        if (targetNode && root.contains(targetNode)) {
            return {node: targetNode};
        }

        var 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) {
    var path = [];
    while (node) {
        node = node.parentNode;
        node && path.push(node);
    }
    return path.reverse();
}

export function aboveViewRoot(viewRoot, node) {
    var viewPath = getPathToRoot(viewRoot);
    return zrUtil.indexOf(viewPath, node) >= 0;
}

// From root to the input node (the input node will be included).
export function wrapTreePathInfo(node, seriesModel) {
    var treePathInfo = [];

    while (node) {
        var nodeDataIndex = node.dataIndex;
        treePathInfo.push({
            name: node.name,
            dataIndex: nodeDataIndex,
            value: seriesModel.getRawValue(nodeDataIndex)
        });
        node = node.parentNode;
    }

    treePathInfo.reverse();

    return treePathInfo;
}