Advanced Data Binding
Documentation
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.
Feel free to share demo-related thoughts here.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
Thank you!
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We appreciate your feedback.
<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>
import {
DxDiagram, DxNodes, DxAutoLayout, DxEdges, DxToolbox, DxGroup,
} from 'devextreme-vue/diagram';
import ArrayStore from 'devextreme/data/array_store';
import service from './data.js';
export default {
components: {
DxDiagram, DxNodes, DxAutoLayout, DxEdges, DxToolbox, DxGroup,
},
data() {
return {
orgItemsDataSource: new ArrayStore({
key: 'id',
data: service.getOrgItems(),
}),
orgLinksDataSource: new ArrayStore({
key: 'id',
data: service.getOrgLinks(),
}),
};
},
methods: {
itemTypeExpr(obj, value) {
if (value) {
obj.type = (value === 'rectangle') ? undefined : 'group';
} else {
return obj.type === 'group' ? 'ellipse' : 'rectangle';
}
return null;
},
itemWidthExpr(obj, value) {
if (value) {
obj.width = value;
} else {
return obj.width || (obj.type === 'group' && 1.5) || 1;
}
return null;
},
itemHeightExpr(obj, value) {
if (value) {
obj.height = value;
} else {
return obj.height || (obj.type === 'group' && 1) || 0.75;
}
return null;
},
itemTextStyleExpr(obj) {
if (obj.level === 'senior') {
return { 'font-weight': 'bold', 'text-decoration': 'underline' };
}
return {};
},
itemStyleExpr(obj) {
const style = { stroke: '#444444' };
if (obj.type === 'group') {
style.fill = '#f3f3f3';
}
return style;
},
linkStyleExpr() {
return { stroke: '#444444' };
},
linkFromLineEndExpr() {
return 'none';
},
linkToLineEndExpr() {
return 'none';
},
},
};
</script>
<style scoped>
#diagram {
height: 900px;
}
</style>
import { createApp } from 'vue';
import App from './App.vue';
createApp(App).mount('#app');
<!DOCTYPE html>
<html>
<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=1.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.2.5/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.2.5/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.2.5/css/dx-diagram.css" />
<link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css" />
<script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script type="text/javascript" src="config.js"></script>
<script type="text/javascript">
System.import("./index.js");
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"> </div>
</div>
</body>
</html>
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;
},
};
window.config = {
transpiler: 'plugin-babel',
meta: {
'*.vue': {
loader: 'vue-loader',
},
'devextreme/localization.js': {
'esModule': true,
},
},
paths: {
'npm:': 'https://unpkg.com/',
},
map: {
'vue': 'npm:vue@3.0.0/dist/vue.esm-browser.js',
'vue-loader': 'npm:dx-systemjs-vue-browser@1.0.15/index.js',
'mitt': 'npm:mitt/dist/mitt.umd.js',
'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.28.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@21.2.5/cjs',
'devextreme-vue': 'npm:devextreme-vue@21.2.5',
'jszip': 'npm:jszip@3.7.1/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@1.5.11/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.1.45/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@4.0.3/dist/dx-gantt.js',
'@devextreme/runtime': 'npm:@devextreme/runtime@2.3.14',
'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js',
'inferno-compat': 'npm:inferno-compat@7.4.11/dist/inferno-compat.min.js',
'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js',
'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js',
'inferno-hydrate': 'npm:inferno-hydrate@7.4.11/dist/inferno-hydrate.min.js',
'inferno-clone-vnode': 'npm:inferno-clone-vnode@7.4.11/dist/inferno-clone-vnode.min.js',
'inferno-create-class': 'npm:inferno-create-class@7.4.11/dist/inferno-create-class.min.js',
'inferno-extras': 'npm:inferno-extras@7.4.11/dist/inferno-extras.min.js',
'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js',
'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js',
},
packages: {
'devextreme-vue': {
main: 'index.js',
},
'devextreme': {
defaultExtension: 'js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/events': {
main: 'index',
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:@devextreme/runtime@2.3.14/inferno/package.json',
],
babelOptions: {
sourceMaps: false,
stage0: true,
},
};
System.config(window.config);