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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>节点上出现3个按钮：删除/生成新元素/连线
https://blog.csdn.net/qq_40285497/article/details/81233607
</title>
<link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/jointjs/2.1.0/joint.css" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.10.1/lodash.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.3.3/backbone.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jointjs/2.1.0/joint.js"></script>
<style>
.treeOperate{
position: absolute;
width: 100px;
height: 40px;
padding: 20px;
/*background: url("login_bg.jpg") no-repeat center/100% 100% content-box;*/
}
.treeOperate a{
position: absolute;
}
.treeOperate .addEle{
bottom: 0;
left: 0;
}
.treeOperate .addLink{
bottom: 0;
right: 0;
}
.treeOperate .deleteEle{
top: 0;
left: 0;
}
</style>
</head>
<body>
<div id="paper" class="paper"></div>
<button id="serialize">序列化</button>
</body>
<script>
//删除一个节点，要知道到父亲节点，删除父亲节点中相应childrenMsg中的元素以及linkMsg中相应元素。
//然后在用找到这个节点以及他的所有子节点，删除
//新增一个节点，要给sharingMsg中相应元素增加id，childrenMsg，linkMsg等信息
//还要insideMsg中增加相应内容
var graph = new joint.dia.Graph;
var paper = new joint.dia.Paper({
el: document.getElementById('paper'),
model: graph,
width: 600,
gridSize: 10,
drawGrid: true,
background: {
color: 'rgba(0, 255, 0, 0.3)'
}
});
//生成节点,obj = {left,top,text}
function createEle(obj) {
var rect = new joint.shapes.standard.Rectangle();
rect.position(obj.left, obj.top); //位置
rect.resize(100, 40); //大小
rect.attr({
body: {
fill: 'blue',
rx:20, //rx,ry设置圆角
ry:20
},
label: {
text: obj.text,
fill: 'white'
}
});
return rect;
}
//生成线 根据位置
// custom link definition
var CustomLink = joint.dia.Link.define('examples.CustomLink', {
defaultLabel: {
// attrs: { text: { text: '*' } }
},
smooth: true
});
//obj = {x1,y1,x2,y2} obj ={source,x2,y2}
function createLink(obj) {
var link = new CustomLink({
// source: { x: obj.x1, y: obj.y1 },
source: { id: obj.source.id },
target: { x: obj.x2, y: obj.y2 },
attrs: ({
'.connection': {
// stroke: '#333333', //连线颜色
// 'stroke-width': 4 //连线粗细
},
'.marker-target': {//线箭头指向样式
fill: 'red',
d: 'M 10 0 L 0 5 L 10 10 z'
}
})
// router: { name: 'manhattan' },
});
return link;
}
//根据起始元素生成的线
function createLinkEle(source, target){
var link = new CustomLink({
source: { id: source.id },
target: { id: target.id },
attrs: ({
'.connection': {
// stroke: '#333333', //连线颜色
// 'stroke-width': 4 //连线粗细
},
'.marker-target': {//线箭头指向样式
fill: 'red',
d: 'M 10 0 L 0 5 L 10 10 z'
}
})
// ,router: { name: 'manhattan' }
});
return link;
}
// graph.addCell();
//定义一个装删除元素id的数组，每当删除元素时，存入id，每当生成元素时，先取这里面的值作为id
//为空时取sharingMsg的length作为id
var hadDelEles = [];
//这个信息是接收来自后台的数据,其中的cid，parentID都是会变的，不是固定的，只起到判断父子节点的作用
var sharingMsg = [
{
id:1,
text:'第一规则',
sign:1000, //sign判断元素所在行，越上面的越大，确定元素所在x轴的位置
layer:1, //layer表示元素所在层级，确定元素所在y轴的位置
parentID:null,
childrenMsg:[2,3,4],//子节点id
//连接信息，判断
linkMsg:['通过','拒绝','人工复核']//与子节点id连线颜色
},
{
id:2,
parentID:1,
text:'第2规则',
sign:999,
layer:2,
childrenMsg:[5,6],
linkMsg:['通过','拒绝']
},
{
id:3,
parentID:1,
text:'第3规则',
sign:1000,
layer:2,
childrenMsg:[],
linkMsg:[]
},
{
id:4,
parentID:1,
text:'第4规则',
sign:1001,
layer:2,
childrenMsg:[],
linkMsg:[]
},
{
id:5,
parentID:2,
text:'第5规则',
sign:998,
layer:3,
childrenMsg:[],
linkMsg:[]
},
{
id:6,
parentID:2,
text:'第6规则',
sign:999,
layer:3,
childrenMsg:[],
linkMsg:[]
}
];
//定义一个存放被删除元素id的数组，当新建时，从这里找，如果这个数组有，就从这个数组中取，如果没有，就从
//设为sharingMsg的length
//这个数组存放界面中存在的节点
var insideMsg = [];
//调整画布大小函数，返回一个对象，包含树的最大最小层，包含输的最大最小sign
function adjustPaperSize() {
//根据下面的值，判断画布大小，元素位置
var maxSign = 0,
minSign = sharingMsg[0].sign,
maxLayer = 0,
minLayer = sharingMsg[0].layer;
for(var i=0;i<sharingMsg.length;i++){
if(sharingMsg[i].layer<minLayer){
minLayer = sharingMsg[i].layer;
}
if(sharingMsg[i].layer>maxLayer){
maxLayer = sharingMsg[i].layer;
}
if(sharingMsg[i].sign<minSign){
minSign = sharingMsg[i].sign;
}
if(sharingMsg[i].sign>maxSign){
maxSign = sharingMsg[i].sign;
}
}
paper.$el.css({
width:(maxSign - minSign + 1) * 150 +50,
height:(maxLayer - minLayer + 1) * 100 + 40
});
return {
maxSign:maxSign,
minSign:minSign,
maxLayer:maxLayer,
minLayer:minLayer
}
}
//打开界面时渲染生成树图
function newTreeChart() {
//调整画布大小
var tempSize = adjustPaperSize();
var minSign = tempSize.minSign,
minLayer = tempSize.minLayer;
//生成元素
for(var i=0;i<sharingMsg.length;i++){
//一个元素长100，宽40，水平间隔50，第一个距离左侧50，垂直距离20，最上一个距离上边30；
var left = (sharingMsg[i].sign - minSign) * 150 + 50;
var top = (sharingMsg[i].layer - minLayer) * 100 + 30;
var obj = {
left:left,
top:top,
text:sharingMsg[i].text
};
var ele = createEle(obj);
insideMsg.push({
self:ele
});
//下面这句该变sharingMsg相应节点的cid，为了之后的操作
sharingMsg[i].cid = ele.cid;
graph.addCell(ele)
}
console.log("insideMsg:",insideMsg);
console.log("sharingMsg:",sharingMsg);
//生成线
//遍历每个节点，判断是否要生成线
sharingMsg.forEach(function (item) {
//如果节点存在孩子，进一步操作
if(item.childrenMsg.length>0){
//存在子元素，需要连线，先找到来源元素source
var source = null;
//insideMsg里面才存有真正的节点
for(var i=0;i<insideMsg.length;i++){
if(item.cid == insideMsg[i].self.cid){
source = insideMsg[i].self;
break;
}
}
console.log("source:",source);
var nowItem = item;
//利用当前节点的childrenMsg中的子元素id从sharingMsg中找到相应点
item.childrenMsg.forEach(function (item,index) {
//设置目标元素
var target = null;
var tempTarget = null;
//设置线条颜色
// var color = nowItem.linkMsg[index];
for(var i=0;i<sharingMsg.length;i++){
if(item == sharingMsg[i].id){
tempTarget = sharingMsg[i];
//获取真正的target
for(var j=0;j<insideMsg.length;j++){
if(tempTarget.cid == insideMsg[j].self.cid){
target = insideMsg[i].self;
var link = createLinkEle(source,target);
// if(color == '通过'){
// link.attr({
// '.connection': { stroke: 'green'}
// });
// }
// if(color == '拒绝'){
// link.attr({
// '.connection': { stroke: 'red'}
// });
// }
// if(color == '人工复核'){
// link.attr({
// '.connection': { stroke: 'blue'}
// });
// }
graph.addCell(link);
break;
}
}
}
}
})
}
});
}
newTreeChart();
//元素点击事件
paper.on('cell:pointerclick',function (e,d) {
console.log(e);
// console.log(d);
var target = null;
for(var i=0;i<insideMsg.length;i++){
if(e.model.cid == insideMsg[i].self.cid){
target = insideMsg[i].self;
}
}
newTreeOperate(target);
d.stopPropagation();
});
//生成
function newTreeOperate(obj) {
console.log("obj",obj);
var html = '<div class="treeOperate">\n' +
' <a href="javascript:;" class="deleteEle">del</a>\n' +
' <a href="javascript:;" class="addEle">ele</a>\n' +
' <a href="javascript:;" class="addLink">link</a>\n' +
'</div>';
$('body').append(html);
$('.treeOperate').css({
//因为操作弹窗的直接父元素是body，$("body").append()所以位置要微调。
//因为操作弹窗的直接父元素是body，$("body").append()所以位置要微调。
left:obj.attributes.position.x - 12,
top:obj.attributes.position.y - 12
});
$('body').on('click',function () {
$('.treeOperate').remove();
});
$('.addEle').on('click',function () {
var tempObj = {
left:obj.attributes.position.x + 150,
top:obj.attributes.position.y,
text:'请选择规则'
};
var cell = createEle(tempObj);
cell.attr('text/fill','black');
cell.attr('rect/fill','#fff');
//新增节点后要给sharingMsg中这个节点的父亲的childrenMsg中加入此节点id
//要在sharingMsg中加入此节点相应信息，在insideMsg中加入此节点相应信息
insideMsg.push({
self:cell
});
var tempId = 0;
if(hadDelEles.length>0){
tempId = hadDelEles.pop();
}else{
tempId = sharingMsg.length;
}
var tempParentID = 0,
tempSign = 0,
tempLayer = 0;
//找到此节点的父亲节点，为父亲节点加上孩子节点（该节点）的信息（id）
sharingMsg.forEach(function (item) {
if(item.cid == obj.cid){
tempParentID = item.id;
item.childrenMsg.push(tempId);
tempSign = item.sign + 1;
tempLayer = item.layer;
}
});
sharingMsg.push({
id:tempId,
cid:cell.cid, //绑定和真正元素的联系
parentID:tempParentID, //这个id也要改
text:'请选择规则',
sign:tempSign,
layer:tempLayer,
childrenMsg:[],
linkMsg:[]
});
graph.addCell(cell);
var link = createLinkEle(obj, cell);
graph.addCell(link);
adjustPaperSize();
});
$('.addLink').on('click',function () {
for(var i=0;i<sharingMsg.length;i++){
if(sharingMsg[i].cid == obj.cid){
if(sharingMsg[i].childrenMsg.length >= 2){
return false;
}
}
}
var tempObj = {
source:obj,
x2:obj.attributes.position.x + 150,
y2:obj.attributes.position.y + 10
};
var link = createLink(tempObj);
graph.addCell(link);
});
$('.deleteEle').on('click',function () {
//删除元素时，在sharingMsg中先删除父亲节点中childrenMsg中相应id，在删除该节点以及他的子节点，删除的节点先存入一个数组nowDel
//根据nowDel数组中的节点，在insideMdg这个真正存在节点的数组中删除相应节点。
//这个a为需要删除的节点，
var a = null;
console.log(sharingMsg);
for(var i=0;i<sharingMsg.length;i++){
if(obj.cid == sharingMsg[i].cid){ //真正的节点和sharingMsg是靠cid来绑定相关的
a = sharingMsg[i]
}
}
console.log(1111);
//在父元素中删除该子节点的id
sharingMsg.forEach(function(item){
if(item.id == a.parentID){
var tempIndex = item.childrenMsg.indexOf(a.id);
item.childrenMsg.splice(tempIndex,1);
}
});
var nowDel = [a];
function fn(f) {
//这里应该是可以优化的，push到nowDel的可以删除掉
f.childrenMsg.forEach(function(item,index,array){
var ThisItem = item;
sharingMsg.forEach(function (item, index, array) {
if(ThisItem == item.id){
nowDel.push(item);
fn(item);
}
})
});
}
fn(a);
nowDel.forEach(function(item,index){
for(var i=insideMsg.length-1;i>=0;i--){
if(item.cid == insideMsg[i].self.cid){
console.log(22);
insideMsg[i].self.remove();
insideMsg.splice(i,1);
}
}
for(var i=sharingMsg.length-1;i>=0;i--){
if(item.id == sharingMsg.id){
sharingMsg.splice(i,1);
}
}
})
});
}
//生成最终的json
// console.log("json:",JSON.stringify(graph.toJSON()));
var resJson = {
"cells": [{
"type": "standard.Rectangle",
"position": {
"x": 350,
"y": 30
},
"size": {
"width": 100,
"height": 40
},
"angle": 0,
"id": "6301b4e0-af69-4913-8e60-c641ce0bac2e",
"z": 1,
"attrs": {
"body": {
"fill": "blue",
"rx": 20,
"ry": 20
},
"label": {
"fill": "white",
"text": "第一规则"
}
}
}, {
"type": "standard.Rectangle",
"position": {
"x": 200,
"y": 130
},
"size": {
"width": 100,
"height": 40
},
"angle": 0,
"id": "c0ee616b-a4c3-4ded-9b02-6e00e7685076",
"z": 2,
"attrs": {
"body": {
"fill": "blue",
"rx": 20,
"ry": 20
},
"label": {
"fill": "white",
"text": "第2规则"
}
}
}, {
"type": "standard.Rectangle",
"position": {
"x": 350,
"y": 130
},
"size": {
"width": 100,
"height": 40
},
"angle": 0,
"id": "ae6991a5-85a8-47e0-bd0f-6193f3c7d690",
"z": 3,
"attrs": {
"body": {
"fill": "blue",
"rx": 20,
"ry": 20
},
"label": {
"fill": "white",
"text": "第3规则"
}
}
}, {
"type": "standard.Rectangle",
"position": {
"x": 500,
"y": 130
},
"size": {
"width": 100,
"height": 40
},
"angle": 0,
"id": "8b5d4e1b-e90f-4cac-a458-8649a59e97d3",
"z": 4,
"attrs": {
"body": {
"fill": "blue",
"rx": 20,
"ry": 20
},
"label": {
"fill": "white",
"text": "第4规则"
}
}
}, {
"type": "standard.Rectangle",
"position": {
"x": 50,
"y": 230
},
"size": {
"width": 100,
"height": 40
},
"angle": 0,
"id": "6990622c-7b57-4846-9138-d26634854d5f",
"z": 5,
"attrs": {
"body": {
"fill": "blue",
"rx": 20,
"ry": 20
},
"label": {
"fill": "white",
"text": "第5规则"
}
}
}, {
"type": "standard.Rectangle",
"position": {
"x": 200,
"y": 230
},
"size": {
"width": 100,
"height": 40
},
"angle": 0,
"id": "b6cb8999-80ac-426d-94b6-be36449bfeec",
"z": 6,
"attrs": {
"body": {
"fill": "blue",
"rx": 20,
"ry": 20
},
"label": {
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