var graph = {
"nodes": [{
"name": "A",
"value": [
"教授",
"在职",
"党委办公室、校长办公室"
],
"category": "中心教师",
"symbolSize": 50,
"tooltip": {
"formatter": "{b0}:{c0}"
}
},
{
"name": "B",
"category": "论文",
"value": [
"期刊论文",
"2005"
],
"symbolSize": 20,
"tooltip": {
"formatter": "{b0}:{c0}"
}
},
{
"name": "C",
"category": "论文合作教师",
"symbolSize": 50
},
{
"name": "D",
"category": "项目",
"value": [
"信息与通信工程学院",
"立项日期：20131101"
],
"symbolSize": 20,
"tooltip": {
"formatter": "{b0}:{c0}"
}
},
{
"name": "N",
"category": "项目合作教师",
"symbolSize": 50
},
{
"name": "Q",
"category": "项目",
"symbolSize": 20
},
{
"name": "S",
"category": "项目",
"symbolSize": 20
},
{
"name": "E",
"category": "专著专利",
"symbolSize": 20,
"value": [
"专利文献",
"2009-07-21"
],
"tooltip": {
"formatter": "{b0}:{c0}"
}
},
{
"name": "W",
"category": "专著专利",
"symbolSize": 20
},
{
"name": "Y",
"category": "专著专利",
"symbolSize": 20
},
{
"name": "Z",
"category": "专著专利",
"symbolSize": 20
},
{
"name": "F",
"category": "专著专利合作教师",
"symbolSize": 50
},
{
"name": "O",
"category": "专著专利合作教师",
"symbolSize": 50
},
{
"name": "P",
"category": "专著专利合作教师",
"symbolSize": 50
},
{
"value": [
"信息与通信工程学院",
"信息工程 "
],
"name": "G",
"category": "课程",
"symbolSize": 20,
"tooltip": {
"formatter": "{b0}:{c0}"
}
},
{
"name": "I",
"category": "课程",
"symbolSize": 20
},
{
"name": "L",
"category": "课程",
"symbolSize": 20
},
{
"name": "H",
"category": "课程合作教师",
"symbolSize": 50
},
{
"name": "M",
"category": "课程合作教师",
"symbolSize": 50
}
],
"links": [{
"source": "A",
"target": "B"
},
{
"source": "B",
"target": "C"
},
{
"source": "A",
"target": "D"
},
{
"source": "D",
"target": "N"
},
{
"source": "N",
"target": "Q"
},
{
"source": "N",
"target": "R"
},
{
"source": "A",
"target": "E"
},
{
"source": "E",
"target": "F"
},
{
"source": "F",
"target": "W"
},
{
"source": "F",
"target": "Y"
},
{
"source": "P",
"target": "Z"
},
{
"source": "E",
"target": "O"
},
{
"source": "E",
"target": "P"
},
{
"source": "A",
"target": "G"
},
{
"source": "G",
"target": "H"
},
{
"source": "G",
"target": "M"
},
{
"source": "M",
"target": "I"
},
{
"source": "M",
"target": "L"
}
]
};
const defaultCategory = "中心教师";
const graphTitle = "力导向关系图--实现点击节点展开折叠";
const currentGraph = {
nodes: {},
links: {},
};
const nodeMap = {};
// 页面加载时，第一次初始化图
function init() {
// 根据定义的常量，产生currentGraph的默认数据
// 遍历全部nodes和links，产生node映射map
for (let i = 0; i < graph.nodes.length; i++) {
if (graph.nodes[i].category === defaultCategory) {
currentGraph.nodes[graph.nodes[i].name] = graph.nodes[i];
}
nodeMap[graph.nodes[i].name] = graph.nodes[i];
nodeMap[graph.nodes[i].name]['links'] = {};
nodeMap[graph.nodes[i].name]['nodes'] = {};
nodeMap[graph.nodes[i].name]['hasAppend'] = false;
}
for (let i = 0; i < graph.links.length; i++) {
let link = graph.links[i];
if (nodeMap[link.source] !== undefined && nodeMap[link.target] !== undefined) {
nodeMap[link.source].links[link.target] = link;
nodeMap[link.source].nodes[nodeMap[link.target].name] = nodeMap[link.target];
}
}
for (let i = 0; i < graph.nodes.length; i++) {
graph.nodes[i].itemStyle = null;
graph.nodes[i].label = {
normal: {
show: graph.nodes[i].symbolSize > 15
}
};
}
redrawGraph();
}
// 处理点击节点展开
function append(nodeName) {
// 根据nodeName从nodeMap里拿出对应的nodes和links，并append到currentGraph.nodes currentGraph.links
let node = nodeMap[nodeName];
if (node.hasAppend === true || Object.keys(node.nodes).length === 0 || Object.keys(node.links).length === 0) {
alert("无法继续展开");
return
}
Object.values(node.nodes).forEach(n => {
currentGraph.nodes[n.name] = n;
});
Object.values(node.links).forEach(l => {
currentGraph.links[l.source + "_" + l.target] = l;
});
node.hasAppend = true;
redrawGraph();
}
// 处理点击节点收缩
function remove(nodeName) {
//根据nodeName从nodeMap里拿出对应的nodes和links，从currentGraph.nodes currentGraph.links删除当前节点的nodes和links并且递归
let node = nodeMap[nodeName];
Object.values(node.nodes).forEach(n => {
delete currentGraph.nodes[n.name];
if (n.hasAppend === true && Object.keys(n.nodes).length > 0) {
remove(n.name);
}
});
Object.values(node.links).forEach(l => {
delete currentGraph.links[l.source + '_' + l.target];
});
// 设置flag 等于false
node.hasAppend = false;
redrawGraph();
}
// 根据更新后的option重新画图
function redrawGraph() {
option.series[0].data = Object.values(currentGraph.nodes);
option.series[0].links = Object.values(currentGraph.links);
console.log(option);
myChart.setOption(option);
}
const option = {
title: {
text: graphTitle,
top: 'top',
left: 'center',
},
tooltip: {},
legend: [],
animation: false,
series: [{
type: 'graph',
layout: 'force',
data: Object.values(currentGraph.nodes),
links: Object.values(currentGraph.links),
categories: [{
name: '中心教师',
itemStyle: {
color: '#c23531'
},
},
{
name: '专著专利合作教师',
itemStyle: {
color: '#749f83'
},
},
{
name: '课程合作教师',
itemStyle: {
color: '#6e7074'
},
},
{
name: '论文合作教师',
itemStyle: {
color: '#2f4554'
},
},
{
name: '论文',
itemStyle: {
color: '#61a0a8'
},
},
{
name: '专著专利',
itemStyle: {
color: '#91c7ae'
},
},
{
name: '课程',
itemStyle: {
color: '#999ea4'
},
},
{
name: '项目合作教师',
itemStyle: {
color: '#DEB887'
},
},
{
name: '项目',
itemStyle: {
color: '#bda29a'
},
}
],
roam: true,
focusNodeAdjacency: false,
itemStyle: {
normal: {
borderColor: '#fff',
borderWidth: 1,
shadowBlur: 10,
shadowColor: 'rgba(0, 0, 0, 0.3)'
}
},
label: {
position: 'right',
formatter: '{b}'
},
lineStyle: {
color: 'target',
opacity: 0.6,
curveness: 0.3
},
emphasis: {
lineStyle: {
width: 10
}
},
force: {
layoutAnimation: false,
repulsion: 500
}
}]
};
init();
myChart.on('click', function(params) {
if (params.dataType === "node") {
const node = nodeMap[params.data.name];
if (node.hasAppend === true) {
remove(node.name)
} else {
append(node.name);
}
}
});