如何在vis.js中隐藏图的分支?

问题描述

我可以通过在节点1205上单击以下内容来在vis.js中显示图形的一部分，但无法弄清楚如何使扩展的部分在同一节点上的第二次单击中消失?

I am able to display part of the graph in vis.js by clicking on the node 1205 with the following but cannot figure out how to make the expanded part disappear on a second click on the same node?

var nodes = new vis.DataSet([
  {id: 2696, label: "l"},
  {id: 1205, label: "l"},
  {id: 2697, label: "l"}
]);

var edges = new vis.DataSet([
  {from: 2696, to: 2697},
  {from: 2696, to: 1205}
]);

var container = document.getElementById('mynetwork');
var data = {
  nodes: nodes,
  edges: edges
};

var network = new vis.Network(container, data, {});
network.on("click", function(e) {
  tw_id = 1205;
  if (e.nodes[0] == tw_id) {
    sel_id = e.nodes[0];
    var node = nodes.get(e.nodes[0]);
    nodes.add([
      {id: 2021, label: "l"},
      {id: 2047, label: "l"}
    ]);
    edges.add([
      {from: 1205, to: 2021},
      {from: 1205, to: 2047}
    ]);
    nodes.update(node);
  }
});

#mynetwork {
  width: 400px;
  height: 300px;
  border: 1px solid lightgray;
}

<link href="https://cdnjs.cloudflare.com/ajax/libs/vis/4.17.0/vis.min.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/vis/4.17.0/vis.min.js"></script>
<div id="mynetwork"></div>

推荐答案

下面是一个示例，该示例基于@pgoldweic的选项以及预定义将在节点1205上单击显示/未显示的边缘和节点的方法来实现.

Here's an example of how to implement this based on @pgoldweic's option plus pre-defining the edges and nodes that will be shown/ unshown per click on node 1205.

该代码维护一个布尔值，以指示是显示下一个动作还是隐藏其他节点.相对于hidden属性，显示为false，隐藏为true.

The code maintains a boolean to indicate whether the next action is show or hide the other nodes. Against the hidden property it is false for show and true for hide.

var nodes = new vis.DataSet([
  {id: 2696, label: "2696", hidden: false},
  {id: 1205, label: "1205", hidden: false},
  {id: 2697, label: "2697", hidden: false},
  {id: 2021, label: "2021", hidden: true},
  {id: 2047, label: "2047", hidden: true}
]);

var edges = new vis.DataSet([
  {id: 'e1', from: 2696, to: 2697, hidden: false},
  {id: 'e2', from: 2696, to: 1205, hidden: false},
  {id: 'e3', from: 1205, to: 2021, hidden: true},
  {id: 'e4', from: 1205, to: 2047, hidden: true}
]);

var container = document.getElementById('mynetwork');
var data = {
  nodes: nodes,
  edges: edges
};

var network = new vis.Network(container, data, {});

// true=hide; false=show
var toggle = false;
network.on("click", function(e) {
  tw_id = 1205;
  if (e.nodes[0] == tw_id) {
    nodes.update([
      {id: 2021, hidden: toggle},
      {id: 2047, hidden: toggle}
    ]);
    edges.update([
      {id: 'e3', hidden: toggle},
      {id: 'e4', hidden: toggle}
    ]);
    network.fit();
    // switch toggle
    toggle = !toggle;
  }
});

#mynetwork {
  width: 400px;
  height: 300px;
  border: 1px solid lightgray;
}

<link href="https://cdnjs.cloudflare.com/ajax/libs/vis/4.17.0/vis.min.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/vis/4.17.0/vis.min.js"></script>
<div id="mynetwork"></div>

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