Bpmn shapes in Angular Diagram component

10 Dec 20243 minutes to read

BPMN shapes are used to represent the internal business procedure in a graphical notation and enable you to communicate the procedures in a standard manner. To create a BPMN shape, in the node property shape, type should be set as “bpmn” and its shape should be set as any one of the built-in shapes. The following code example illustrates how to create a simple business process.

NOTE

If you want to use BPMN shapes in diagram, you need to inject BpmnDiagrams in the diagram.

app.component.ts

import { DiagramModule, BpmnDiagramsService, DiagramComponent, NodeModel, BpmnShapeModel } from '@syncfusion/ej2-angular-diagrams'
import { Component, ViewEncapsulation, ViewChild } from '@angular/core';

@Component({
    imports: [
        DiagramModule
    ],

    providers: [BpmnDiagramsService],
    standalone: true,
    selector: "app-container",
    template: `<ejs-diagram #diagram id="diagram" width="100%" height="580px" [getNodeDefaults] ='getNodeDefaults'>
        <e-nodes>
            <e-node id='node1' [offsetX]=150 [offsetY]=150 [shape]='shape'></e-node>
        </e-nodes>
    </ejs-diagram>`,
    encapsulation: ViewEncapsulation.None
})
export class AppComponent {
    @ViewChild("diagram")
    public diagram?: DiagramComponent;
    public shape: BpmnShapeModel = {
        type: 'Bpmn',
        shape: 'Event',
        // set the event type as End
        event: {
            event: 'End'
        }
    }
    public getNodeDefaults(node: NodeModel): NodeModel {
        node.height = 100;
        node.width = 100;
        return node;
    }
}

main.ts

import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Note : The default value for the property shape is “event”.

The list of BPMN shapes are as follows:

Shape	Image
Event
Gateway
Task
Message
DataSource
DataObject
Group

The BPMN shapes and its types are explained as follows.