This section explains the steps required to create a simple diagram and demonstrates the basic usage of the diagram control.
The following list of dependencies are required to use the Diagram
component in your application.
|-- @syncfusion/ej2-react-diagrams
|-- @syncfusion/ej2-base
|-- @syncfusion/ej2-data
|-- @syncfusion/ej2-navigations
|-- @syncfusion/ej2-inputs
|-- @syncfusion/ej2-popups
|-- @syncfusion/ej2-buttons
|-- @syncfusion/ej2-lists
|-- @syncfusion/ej2-splitbuttons
|-- @syncfusion/ej2-diagrams
|-- @syncfusion/ej2-react-base
You can use create-react-app
to setup the applications.
To install create-react-app
run the following command.
npm install -g create-react-app
React
sample use following commands.create-react-app quickstart --scripts-version=react-scripts-ts
cd quickstart
All the available Essential JS 2 packages are published in Node Package Manager
public registry.
You can choose the component that you want to install. For this application, we are going to use Diagram
component.
To install Diagram component, use the following command
npm install @syncfusion/ej2-react-diagrams –save
Add Diagram component’s styles as given below in App.css
.
@import "../node_modules/@syncfusion/ej2-react-diagrams/styles/material.css";
DiagramComponent
from ej2-react-diagrams
package.[src/App.tsx]
import * as React from "react";
import "./App.css";
// import the DiagramComponent
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
export default class App extends React.Component<{}, {}> {
render() {
return <DiagramComponent id="diagram" />;
}
}
Now run the npm start
command in the console, it will run your application and open the browser window.
npm start
The below examples shows the basic Diagram component.
import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
ReactDOM.render(
<DiagramComponent id="diagram" width={"100%"} height={"350px"} />,
document.getElementById("diagram")
);
The diagram component is divided into individual feature-wise modules. In order to use a particular feature, inject the required module. The following list describes the module names and their description.
BpmnDiagrams
- Inject this provider to add built-in BPMN Shapes to diagrams.ConnectorBridging
- Inject this provider to add bridges to connectors.ConnectorEditing
- Inject this provider to edit the segments for connector.ComplexHierarchicalTree
- Inject this provider to complex hierarchical tree like structure.DataBinding
- Inject this provider to populate nodes from given data source.DiagramContextMenu
- Inject this provider to manipulate context menu.HierarchicalTree
- Inject this provider to use hierarchical tree like structure.LayoutAnimation
- Inject this provider animation to layouts.MindMap
- Inject this provider to use mind map.PrintAndExport
- Inject this provider to print or export the objects.RadialTree
- Inject this provider to use Radial tree like structure.Snapping
- Inject this provider to Snap the objects.SymmetricLayout
- Inject this provider to render layout in symmetrical method.UndoRedo
- Inject this provider to revert and restore the changes.These modules should be imported and injected into the Diagram component using Diagram.Inject
method as follows.
import * as React from "react";
import * as ReactDOM from "react-dom";
import {
DiagramComponent,
HierarchicalTree,
MindMap,
RadialTree,
ComplexHierarchicalTree,
DataBinding,
Snapping,
PrintAndExport,
BpmnDiagrams,
SymmetricLayout,
ConnectorBridging,
UndoRedo,
LayoutAnimation,
DiagramContextMenu,
ConnectorEditing
} from "@syncfusion/ej2-react-diagrams";
ReactDOM.render(
<DiagramComponent id="diagram">
<Inject
services={[
HierarchicalTree,
MindMap,
RadialTree,
ComplexHierarchicalTree,
DataBinding,
Snapping,
PrintAndExport,
BpmnDiagrams,
SymmetricLayout,
ConnectorBridging,
UndoRedo,
LayoutAnimation,
DiagramContextMenu,
ConnectorEditing
]}
/>
</DiagramComponent>,
document.getElementById("diagram")
);
Create and add a node
(JSON data) with specific position, size, label, and shape.
import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent, NodeModel } from "@syncfusion/ej2-react-diagrams";
let nodes: NodeModel[] = [
{
id: "node1",
height: 100,
width: 100,
offsetX: 100,
offsetY: 200
}
];
ReactDOM.render(
<DiagramComponent
id="diagram"
width={"100%"}
height={"350px"}
nodes={nodes}
/>,
document.getElementById("diagram")
);
Add two node to the diagram as shown in the previous example. Connect these nodes by adding a connector using the connector
property and refer the source and target end by using the sourceNode
and targetNode
properties.
import * as React from "react";
import * as ReactDOM from "react-dom";
import {
DiagramComponent,
NodeModel,
ConnectorModel
} from "@syncfusion/ej2-react-diagrams";
let nodes: NodeModel[] = [
{
id: "node1",
height: 100,
width: 100,
offsetX: 200,
offsetY: 100
},
{
id: "node2",
height: 100,
width: 100,
offsetX: 200,
offsetY: 250
}
];
let connectors: ConnectorModel[] = [
{
id: "connector1",
sourceID: "node1",
targetID: "node2"
}
];
ReactDOM.render(
<DiagramComponent
id="diagram"
width={"100%"}
height={"350px"}
nodes={nodes}
connectors={connectors}
/>,
document.getElementById("diagram")
);
Default values for all nodes
and connectors
can be set using the getNodeDefaults
and getConnectorDefaults
properties, respectively. For example, if all nodes have the same width and height, such properties can be moved into getNodeDefaults
.
Similarly we can add required nodes and connectors to form a complete flow diagram.
import * as React from "react";
import * as ReactDOM from "react-dom";
import {
DiagramComponent,
NodeModel,
ConnectorModel
} from "@syncfusion/ej2-react-diagrams";
let nodes: NodeModel[] = [
{
id: "node1",
offsetY: 50,
shape: { type: "Flow", shape: "Terminator" },
annotations: [
{
content: "Start"
}
]
},
{
id: "node2",
offsetY: 140,
shape: { type: "Flow", shape: "Process" },
annotations: [
{
content: "var i = 0;"
}
]
},
{
id: "node3",
offsetY: 230,
shape: { type: "Flow", shape: "Decision" },
annotations: [
{
content: "i < 10?"
}
]
},
{
id: "node4",
offsetY: 320,
shape: { type: "Flow", shape: "PreDefinedProcess" },
annotations: [
{
content: 'print("Hello!!");'
}
]
},
{
id: "node5",
offsetY: 410,
shape: { type: "Flow", shape: "Process" },
annotations: [
{
content: "i++;"
}
]
},
{
id: "node6",
offsetY: 500,
shape: { type: "Flow", shape: "Terminator" },
annotations: [
{
content: "End"
}
]
}
];
let connectors: ConnectorModel[] = [
{
id: "connector1",
sourceID: "node1",
targetID: "node2"
},
{
id: "connector2",
sourceID: "node2",
targetID: "node3"
},
{
id: "connector3",
sourceID: "node3",
targetID: "node4",
annotations: [{ text: "Yes" }]
},
{
id: "connector4",
sourceID: "node3",
targetID: "node6",
labels: [{ text: "No" }],
segments: [
{ length: 30, direction: "Right" },
{ length: 300, direction: "Bottom" }
]
},
{
id: "connector5",
sourceID: "node4",
targetID: "node5"
},
{
id: "connector6",
sourceID: "node5",
targetID: "node3",
segments: [
{ length: 30, direction: "Left" },
{ length: 200, direction: "Top" }
]
}
];
ReactDOM.render(
<DiagramComponent
id="diagram"
width={"100%"}
height={"600px"}
nodes={nodes}
connectors={connectors}
getNodeDefaults={(node: NodeModel): NodeModel => {
node.height = 50;
node.width = 140;
node.offsetX = 300;
return node;
}}
getConnectorDefaults={(obj: ConnectorModel): ConnectorModel => {
obj.type = "Orthogonal";
}}
/>,
document.getElementById("diagram")
);
In ‘Flow Diagram’ section we saw how to create a diagram manually, now let us see how to create and position diagram automatically.
Define Employee Information as JSON data. The following code example shows an employee array whose, Name
is used as an unique identifier and ReportingPerson
is used to identify the person to whom an employee report to, in the organization.
public data: Object[] = [
{
Name: "Elizabeth",
Role: "Director"
},
{
Name: "Christina",
ReportingPerson: "Elizabeth",
Role: "Manager"
},
{
Name: "Yoshi",
ReportingPerson: "Christina",
Role: "Lead"
},
{
Name: "Philip",
ReportingPerson: "Christina",
Role: "Lead"
},
{
Name: "Yang",
ReportingPerson: "Elizabeth",
Role: "Manager"
},
{
Name: "Roland",
ReportingPerson: "Yang",
Role: "Lead"
},
{
Name: "Yvonne",
ReportingPerson: "Yang",
Role: "Lead"
}
];
You can configure the above “Employee Information” with diagram, so that the nodes and connectors are automatically generated using the mapping properties. The following code example show how dataSourceSettings
is used to map ID and parent with property name identifiers for employee information.
export let data: Object[] = [
{
Name: "Elizabeth",
Role: "Director"
},
{
Name: "Christina",
ReportingPerson: "Elizabeth",
Role: "Manager"
},
{
Name: "Yoshi",
ReportingPerson: "Christina",
Role: "Lead"
},
{
Name: "Philip",
ReportingPerson: "Christina",
Role: "Lead"
},
{
Name: "Yang",
ReportingPerson: "Elizabeth",
Role: "Manager"
},
{
Name: "Roland",
ReportingPerson: "Yang",
Role: "Lead"
},
{
Name: "Yvonne",
ReportingPerson: "Yang",
Role: "Lead"
}
];
let dataSettings: object = {
id: "Name",
parentId: "ReportingPerson",
dataManager: new DataManager(data as JSON[])
}
ReactDOM.render(<DiagramComponent
id="diagram"
width={"100%"}
height={"350px"}
dataSourceSettings={dataSettings}><Inject services={[HierarchicalTree, DataBinding]} /></DiagramComponent>,
document.getElementById("diagram")
);
Following code examples indicate how to define the default appearance of node and connector using default settings.
import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
import {
Node,
HierarchicalTree,
Diagram,
NodeModel,
ConnectorModel,
Inject,
DataBinding
} from "@syncfusion/ej2-react-diagrams";
import { DataManager } from "@syncfusion/ej2-data";
export interface EmployeeInfo {
Name: string;
Role: string;
color: string;
}
export let data: Object[] = [
{
Name: "Elizabeth",
Role: "Director"
},
{
Name: "Christina",
ReportingPerson: "Elizabeth",
Role: "Manager"
},
{
Name: "Yoshi",
ReportingPerson: "Christina",
Role: "Lead"
},
{
Name: "Philip",
ReportingPerson: "Christina",
Role: "Lead"
},
{
Name: "Yang",
ReportingPerson: "Elizabeth",
Role: "Manager"
},
{
Name: "Roland",
ReportingPerson: "Yang",
Role: "Lead"
},
{
Name: "Yvonne",
ReportingPerson: "Yang",
Role: "Lead"
}
];
let dataSettings: object = {
id: "Name",
parentId: "ReportingPerson",
dataManager: new DataManager(data as JSON[])
}
let layoutSetting: object= { type: "OrganizationalChart" }
ReactDOM.render(<DiagramComponent
id="diagram"
width={"100%"}
height={"350px"}
dataSourceSettings={dataSettings}
layout={layoutSetting}
getNodeDefaults={(node: NodeModel): NodeModel => {
let codes: Object = {
Director: "rgb(0, 139,139)",
Manager: "rgb(30, 30,113)",
Lead: "rgb(0, 100,0)"
};
node.width = 70;
node.height = 30;
node.annotations = [
{ content: (node.data as EmployeeInfo).Name, style: { color: "white" } }
];
node.style.fill = codes[(node.data as EmployeeInfo).Role];
return node;
}}
getConnectorDefaults={(connector: ConnectorModel): ConnectorModel => {
connector.type = "Orthogonal";
connector.cornerRadius = 7;
return connector;
}}><Inject services={[HierarchicalTree, DataBinding]} /></DiagramComponent>,
document.getElementById("diagram")
);