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node_modules/echarts/lib/chart/helper/createGraphFromNodeEdge.js 3.15 KB
2a09d1a4   liuqimichale   添加宜春 天水 宣化
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  var zrUtil = require("zrender/lib/core/util");
  
  var List = require("../../data/List");
  
  var Graph = require("../../data/Graph");
  
  var linkList = require("../../data/helper/linkList");
  
  var createDimensions = require("../../data/helper/createDimensions");
  
  var CoordinateSystem = require("../../CoordinateSystem");
  
  var createListFromArray = require("./createListFromArray");
  
  /*
  * 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.
  */
  function _default(nodes, edges, seriesModel, directed, beforeLink) {
    // ??? TODO
    // support dataset?
    var graph = new Graph(directed);
  
    for (var i = 0; i < nodes.length; i++) {
      graph.addNode(zrUtil.retrieve( // Id, name, dataIndex
      nodes[i].id, nodes[i].name, i), i);
    }
  
    var linkNameList = [];
    var validEdges = [];
    var linkCount = 0;
  
    for (var i = 0; i < edges.length; i++) {
      var link = edges[i];
      var source = link.source;
      var target = link.target; // addEdge may fail when source or target not exists
  
      if (graph.addEdge(source, target, linkCount)) {
        validEdges.push(link);
        linkNameList.push(zrUtil.retrieve(link.id, source + ' > ' + target));
        linkCount++;
      }
    }
  
    var coordSys = seriesModel.get('coordinateSystem');
    var nodeData;
  
    if (coordSys === 'cartesian2d' || coordSys === 'polar') {
      nodeData = createListFromArray(nodes, seriesModel);
    } else {
      var coordSysCtor = CoordinateSystem.get(coordSys);
      var coordDimensions = coordSysCtor && coordSysCtor.type !== 'view' ? coordSysCtor.dimensions || [] : []; // FIXME: Some geo do not need `value` dimenson, whereas `calendar` needs
      // `value` dimension, but graph need `value` dimension. It's better to
      // uniform this behavior.
  
      if (zrUtil.indexOf(coordDimensions, 'value') < 0) {
        coordDimensions.concat(['value']);
      }
  
      var dimensionNames = createDimensions(nodes, {
        coordDimensions: coordDimensions
      });
      nodeData = new List(dimensionNames, seriesModel);
      nodeData.initData(nodes);
    }
  
    var edgeData = new List(['value'], seriesModel);
    edgeData.initData(validEdges, linkNameList);
    beforeLink && beforeLink(nodeData, edgeData);
    linkList({
      mainData: nodeData,
      struct: graph,
      structAttr: 'graph',
      datas: {
        node: nodeData,
        edge: edgeData
      },
      datasAttr: {
        node: 'data',
        edge: 'edgeData'
      }
    }); // Update dataIndex of nodes and edges because invalid edge may be removed
  
    graph.update();
    return graph;
  }
  
  module.exports = _default;