Advanced Data Binding
Note that the Diagram widget is in the community technology preview (CTP) development stage.
The Diagram widget accepts functions as expression property values. The widget 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 option specifies an auto-layout algorithm type and orientation that the widget 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!
We appreciate your feedback.
We appreciate your feedback.
$(function() {
$("#diagram").dxDiagram({
nodes: {
dataSource: new DevExpress.data.ArrayStore({
key: "this",
data: orgItems
}),
typeExpr: itemTypeExpr,
textExpr: "name",
widthExpr: itemWidthExpr,
heightExpr: itemHeightExpr,
textStyleExpr: itemTextStyleExpr,
styleExpr: itemStyleExpr,
autoLayout: {
type: "tree",
orientation: "horizontal"
}
},
edges: {
dataSource: new DevExpress.data.ArrayStore({
key: "this",
data: orgLinks
}),
styleExpr: linkStyleExpr,
fromLineEndExpr: linkFromLineEndExpr,
toLineEndExpr: linkToLineEndExpr
},
toolbox: {
groups: [ "general" ]
}
});
function itemTypeExpr(obj, value) {
if(value)
obj.type = (value === "rectangle") ? undefined : "group";
else
return obj.type === "group" ? "ellipse" : "rectangle";
}
function itemWidthExpr(obj, value) {
if(value)
obj.width = value;
else
return obj.width || (obj.type === "group" && 1.5) || 1;
}
function itemHeightExpr(obj, value) {
if(value)
obj.height = value;
else
return obj.height || (obj.type === "group" && 1) || 0.75;
}
function itemTextStyleExpr(obj) {
if(obj.level === "senior")
return { "font-weight": "bold", "text-decoration": "underline" };
return {};
}
function itemStyleExpr(obj) {
let style = { "stroke": "#444444" };
if(obj.type === "group")
style["fill"] = "#f3f3f3";
return style;
}
function linkStyleExpr(obj) {
return { "stroke": "#444444" };
}
function linkFromLineEndExpr(obj) {
return "none";
}
function linkToLineEndExpr(obj) {
return "none";
}
});
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<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" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script>window.jQuery || document.write(decodeURIComponent('%3Cscript src="js/jquery.min.js"%3E%3C/script%3E'))</script>
<script src="https://cdn3.devexpress.com/jslib/19.2.4/js/dx-diagram.min.js"></script>
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.4/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.4/css/dx.light.css" />
<link rel="stylesheet" href="https://cdn3.devexpress.com/jslib/19.2.4/css/dx-diagram.min.css" />
<script src="https://cdn3.devexpress.com/jslib/19.2.4/js/dx.all.js"></script>
<link rel="stylesheet" type="text/css" href="styles.css" />
<script src="data.js"></script>
<script src="index.js"></script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="diagram">
</div>
</div>
</body>
</html>
#diagram {
height: 900px;
}
var 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"
}
];
var 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",
}
];