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Vue Diagram - Advanced Data Binding

The Diagram component accepts functions as expression property values. It allows you to implement custom logic when you bind a diagram to a data source.

In this demo, the nodes and edges collections are bound to a data source. Custom functions are used to get different shape types and font styles for items based on additional data source information.

The autoLayout property specifies an auto-layout algorithm type and orientation that the component uses to build diagrams.

Backend API
<template> <DxDiagram id="diagram" ref="diagram" > <DxNodes :data-source="orgItemsDataSource" :type-expr="itemTypeExpr" :text-expr="'name'" :width-expr="itemWidthExpr" :height-expr="itemHeightExpr" :text-style-expr="itemTextStyleExpr" :style-expr="itemStyleExpr" > <DxAutoLayout :type="'tree'" :orientation="'horizontal'" /> </DxNodes> <DxEdges :data-source="orgLinksDataSource" :from-line-end-expr="linkFromLineEndExpr" :to-line-end-expr="linkToLineEndExpr" :style-expr="linkStyleExpr" /> <DxToolbox> <DxGroup :category="'general'" :title="'General'" /> </DxToolbox> </DxDiagram> </template> <script setup lang="ts"> import { DxDiagram, DxNodes, DxAutoLayout, DxEdges, DxToolbox, DxGroup, } from 'devextreme-vue/diagram'; import { ArrayStore } from 'devextreme-vue/common/data'; import service from './data.ts'; const orgItemsDataSource = new ArrayStore({ key: 'id', data: service.getOrgItems(), }); const orgLinksDataSource = new ArrayStore({ key: 'id', data: service.getOrgLinks(), }); const linkStyleExpr = () => ({ stroke: '#444444' }); const linkFromLineEndExpr = () => 'none'; const linkToLineEndExpr = () => 'none'; const itemTextStyleExpr = (obj: any) => (obj.level === 'senior' ? { 'font-weight': 'bold', 'text-decoration': 'underline' } : {} ); const itemStyleExpr = ({ type }: { type: string }) => ({ stroke: '#444444', ...(type === 'group' ? { fill: '#f3f3f3' } : {}), }); function itemTypeExpr(obj: any, value: any) { if (value) { obj.type = (value === 'rectangle') ? undefined : 'group'; return null; } return obj.type === 'group' ? 'ellipse' : 'rectangle'; } function itemWidthExpr(obj: any, value: any) { if (value) { obj.width = value; return null; } return obj.width || (obj.type === 'group' && 1.5) || 1; } function itemHeightExpr(obj: any, value: any) { if (value) { obj.height = value; return null; } return obj.height || (obj.type === 'group' && 1) || 0.75; } </script> <style> #diagram { height: 900px; } </style>
const orgItems = [ { id: '106', name: 'Development', type: 'group', }, { id: '107', name: 'WinForms\nTeam', type: 'group', }, { id: '108', name: 'WPF\nTeam', type: 'group', }, { id: '109', name: 'Javascript\nTeam', type: 'group', }, { id: '110', name: 'ASP.NET\nTeam', type: 'group', }, { id: '112', name: 'Ana\nTrujillo', level: 'senior', }, { id: '113', name: 'Antonio\nMoreno', }, { id: '115', name: 'Christina\nBerglund', }, { id: '116', name: 'Hanna\nMoos', }, { id: '119', name: 'Laurence\nLebihan', }, { id: '120', name: 'Elizabeth\nLincoln', level: 'senior', }, { id: '122', name: 'Patricio\nSimpson', level: 'senior', }, { id: '123', name: 'Francisco\nChang', }, ]; const orgLinks = [ { id: '124', from: '106', to: '108', }, { id: '125', from: '106', to: '109', }, { id: '126', from: '106', to: '107', }, { id: '127', from: '106', to: '110', }, { id: '129', from: '110', to: '112', }, { id: '130', from: '110', to: '113', }, { id: '132', from: '107', to: '115', }, { id: '133', from: '107', to: '116', }, { id: '136', from: '108', to: '119', }, { id: '137', from: '108', to: '120', }, { id: '139', from: '109', to: '122', }, { id: '140', from: '109', to: '123', }, ]; export default { getOrgItems() { return orgItems; }, getOrgLinks() { return orgLinks; }, };
import { createApp } from 'vue'; import App from './App.vue'; createApp(App).mount('#app');
<!DOCTYPE html> <html lang="en"> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/26.1.5/css/dx.light.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/26.1.5/css/dx-diagram.min.css" /> <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css" /> <link rel="stylesheet" type="text/css" href="./bundle.css" /> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"> </div> </div> <script src="bundles/vendor/vue.vendor.js"></script> <script src="./bundle.js"></script> </body> </html>