User handle in React Diagram component

11 Dec 202424 minutes to read

User handles are used to add frequently used commands around the selector.

Create user handle

To create user handles, define and add them to the userHandles collection of the selectedItems property. The name property of userHandles is used to define the name of the user handle, which can then be used at runtime for identification and customization. The pathData property is used to define the path data of userhandle.

The following example shows how to render user handle.

index.jsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
let node1 = [{
    id: 'node1',
    offsetX: 100,
    offsetY: 100,
    height: 100,
    width: 100,
}];
let userHandles = [{
    name: 'copy',
    pathData:
        'M0,3.42 L1.36,3.42 L1.36,12.39 L9.62,12.39 L9.62,13.75 L1.36,13.75 C0.97,13.75,0.65,13.62,0.39,13.36 C0.13,13.1,0,12.78,0,12.39 Z M4.13,0 L12.39,0 C12.78,0,13.1,0.13,13.36,0.39 C13.62,0.65,13.75,0.97,13.75,1.36 L13.75,9.62 C13.75,10.01,13.62,10.33,13.36,10.6 C13.1,10.87,12.78,11.01,12.39,11.01 L4.13,11.01 C3.72,11.01,3.39,10.87,3.13,10.6 C2.87,10.33,2.74,10.01,2.74,9.62 L2.74,1.36 C2.74,0.97,2.87,0.65,3.13,0.39 C3.39,0.13,3.72,0,4.13,0 Z ',
}];
function App() {
    return (<DiagramComponent id="container" width={"100%"} height={"600px"} nodes={node1} selectedItems={{
        //Define user handles in selectedItems property
        userHandles: userHandles
    }}
    />);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent, NodeModel, UserHandleModel } from "@syncfusion/ej2-react-diagrams";
let node1: NodeModel[] = [{
    id: 'node1',
    offsetX: 100,
    offsetY: 100,
    height: 100,
    width: 100,
}];
let userHandles: UserHandleModel[] = [{
    name: 'copy',
    pathData:
        'M0,3.42 L1.36,3.42 L1.36,12.39 L9.62,12.39 L9.62,13.75 L1.36,13.75 C0.97,13.75,0.65,13.62,0.39,13.36 C0.13,13.1,0,12.78,0,12.39 Z M4.13,0 L12.39,0 C12.78,0,13.1,0.13,13.36,0.39 C13.62,0.65,13.75,0.97,13.75,1.36 L13.75,9.62 C13.75,10.01,13.62,10.33,13.36,10.6 C13.1,10.87,12.78,11.01,12.39,11.01 L4.13,11.01 C3.72,11.01,3.39,10.87,3.13,10.6 C2.87,10.33,2.74,10.01,2.74,9.62 L2.74,1.36 C2.74,0.97,2.87,0.65,3.13,0.39 C3.39,0.13,3.72,0,4.13,0 Z ',
}];
function App() {
    return (
        <DiagramComponent id="container"
            width={"100%"}
            height={"600px"}
            nodes={node1}
            selectedItems={{
                //Define user handles in selectedItems property
                userHandles: userHandles
            }}
        />
    );
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

Customize User handle click

When the user handle is clicked, the onUserHandleMouseDown event allows us to identify which user handle was clicked using the name property of userHandle. Based on this name, we can customize the diagram elements accordingly. Several events are triggered while interacting with a user handle. In the following example, we use the onUserHandleMouseDown event to clone nodes on user handle click.

index.jsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
let node1 = [{
    id: 'node1',
    offsetX: 100,
    offsetY: 100,
    height: 100,
    width: 100,
}];
let userHandles = [{
    name: 'clone',
    pathData:
      'M0,3.42 L1.36,3.42 L1.36,12.39 L9.62,12.39 L9.62,13.75 L1.36,13.75 C0.97,13.75,0.65,13.62,0.39,13.36 C0.13,13.1,0,12.78,0,12.39 Z M4.13,0 L12.39,0 C12.78,0,13.1,0.13,13.36,0.39 C13.62,0.65,13.75,0.97,13.75,1.36 L13.75,9.62 C13.75,10.01,13.62,10.33,13.36,10.6 C13.1,10.87,12.78,11.01,12.39,11.01 L4.13,11.01 C3.72,11.01,3.39,10.87,3.13,10.6 C2.87,10.33,2.74,10.01,2.74,9.62 L2.74,1.36 C2.74,0.97,2.87,0.65,3.13,0.39 C3.39,0.13,3.72,0,4.13,0 Z ',
  },];
let diagramInstance;
function App() {
    const handleUserHandleMouseDown = (args) => {
        if (args.element) {
            //To clone the selected node
            diagramInstance.copy();
            diagramInstance.paste();
        }
    };
    return (<DiagramComponent id="container" ref={(diagram) => (diagramInstance = diagram)} width={"100%"} height={"600px"} nodes={node1} selectedItems={{
        //Define user handles in selectedItems property
        userHandles: userHandles 
    }}
    onUserHandleMouseDown={handleUserHandleMouseDown} 
    />);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent, NodeModel, UserHandleModel, UserHandleEventsArgs } from "@syncfusion/ej2-react-diagrams";
let node1: NodeModel[] = [{
    id: 'node1',
    offsetX: 100,
    offsetY: 100,
    height: 100,
    width: 100,
}];
let userHandles: UserHandleModel[] = [{
    name: 'clone',
    pathData:
      'M0,3.42 L1.36,3.42 L1.36,12.39 L9.62,12.39 L9.62,13.75 L1.36,13.75 C0.97,13.75,0.65,13.62,0.39,13.36 C0.13,13.1,0,12.78,0,12.39 Z M4.13,0 L12.39,0 C12.78,0,13.1,0.13,13.36,0.39 C13.62,0.65,13.75,0.97,13.75,1.36 L13.75,9.62 C13.75,10.01,13.62,10.33,13.36,10.6 C13.1,10.87,12.78,11.01,12.39,11.01 L4.13,11.01 C3.72,11.01,3.39,10.87,3.13,10.6 C2.87,10.33,2.74,10.01,2.74,9.62 L2.74,1.36 C2.74,0.97,2.87,0.65,3.13,0.39 C3.39,0.13,3.72,0,4.13,0 Z ',
  },];
let diagramInstance: DiagramComponent;
function App() {
    const handleUserHandleMouseDown = (args: UserHandleEventsArgs) => {
        if (args.element) {
            //To clone the selected node
            diagramInstance.copy();
            diagramInstance.paste();
        }
    };
    return (
        <DiagramComponent id="container"
            ref={(diagram) => (diagramInstance = diagram)}
            width={"100%"}
            height={"600px"}
            nodes={node1}
            selectedItems={{
                //Define user handles in selectedItems property
                userHandles: userHandles
            }}
            onUserHandleMouseDown={handleUserHandleMouseDown} 
        />
    );
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

Alignment

User handles can be aligned relative to the node boundaries. It has margin, offset, side, horizontalAlignment, and verticalAlignment properties to align user handle based on user’s needs.

Offset

The offset, property of userHandles aligns the user handle based on fractions. For example, 0 represents the top-left corner, 1 represents the top-right corner, and 0.5 represents the top-center.

Side

The side property of userHandles aligns the user handle using the following options: Top, Bottom, Left, and Right.

Horizontal and vertical alignments

The horizontalAlignment property of userHandles is used to set how the user handle is horizontally aligned at the position based on the offset. The verticalAlignment property is used to set how user handle is vertically aligned at the position.

Margin for the user handle

The margin property adds blank space to any of the four sides of the user handle, allowing for precise displacement.

In the following example, the user handle is aligned to the bottom-right corner of the node.

index.jsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
let node1 = [{
    id: 'node1',
    offsetX: 100,
    offsetY: 100,
    height: 100,
    width: 100,
}];
let userHandles = [{
    name: 'clone',
    pathData:
      'M0,3.42 L1.36,3.42 L1.36,12.39 L9.62,12.39 L9.62,13.75 L1.36,13.75 C0.97,13.75,0.65,13.62,0.39,13.36 C0.13,13.1,0,12.78,0,12.39 Z M4.13,0 L12.39,0 C12.78,0,13.1,0.13,13.36,0.39 C13.62,0.65,13.75,0.97,13.75,1.36 L13.75,9.62 C13.75,10.01,13.62,10.33,13.36,10.6 C13.1,10.87,12.78,11.01,12.39,11.01 L4.13,11.01 C3.72,11.01,3.39,10.87,3.13,10.6 C2.87,10.33,2.74,10.01,2.74,9.62 L2.74,1.36 C2.74,0.97,2.87,0.65,3.13,0.39 C3.39,0.13,3.72,0,4.13,0 Z ',
      //Alignment options
        offset: 1,
        side: 'Bottom',
        horizontalAlignment: 'Left',
        verticalAlignment: 'Bottom',
        margin: { left: 5, bottom: 10 },
  },];
let diagramInstance;
function App() {
    const handleUserHandleMouseDown = (args) => {
        if (args.element) {
            //To clone the selected node
            diagramInstance.copy();
            diagramInstance.paste();
        }
    };
    return (<DiagramComponent id="container" ref={(diagram) => (diagramInstance = diagram)} width={"100%"} height={"600px"} nodes={node1} selectedItems={{
        //Define user handles in selectedItems property
        userHandles: userHandles 
    }}
    onUserHandleMouseDown={handleUserHandleMouseDown} 
    />);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent, NodeModel, UserHandleModel, UserHandleEventsArgs } from "@syncfusion/ej2-react-diagrams";
let node1: NodeModel[] = [{
    id: 'node1',
    offsetX: 100,
    offsetY: 100,
    height: 100,
    width: 100,
}];
let userHandles: UserHandleModel[] = [{
    name: 'clone',
    pathData:
      'M0,3.42 L1.36,3.42 L1.36,12.39 L9.62,12.39 L9.62,13.75 L1.36,13.75 C0.97,13.75,0.65,13.62,0.39,13.36 C0.13,13.1,0,12.78,0,12.39 Z M4.13,0 L12.39,0 C12.78,0,13.1,0.13,13.36,0.39 C13.62,0.65,13.75,0.97,13.75,1.36 L13.75,9.62 C13.75,10.01,13.62,10.33,13.36,10.6 C13.1,10.87,12.78,11.01,12.39,11.01 L4.13,11.01 C3.72,11.01,3.39,10.87,3.13,10.6 C2.87,10.33,2.74,10.01,2.74,9.62 L2.74,1.36 C2.74,0.97,2.87,0.65,3.13,0.39 C3.39,0.13,3.72,0,4.13,0 Z ',
       //Alignment options
        offset: 1,
        side: 'Bottom',
        horizontalAlignment: 'Left',
        verticalAlignment: 'Bottom',
        margin: { left: 5, bottom: 10 },
  },];
let diagramInstance: DiagramComponent;
function App() {
    const handleUserHandleMouseDown = (args: UserHandleEventsArgs) => {
        if (args.element) {
            //To clone the selected node
            diagramInstance.copy();
            diagramInstance.paste();
        }
    };
    return (
        <DiagramComponent id="container"
            ref={(diagram) => (diagramInstance = diagram)}
            width={"100%"}
            height={"600px"}
            nodes={node1}
            selectedItems={{
                //Define user handles in selectedItems property
                userHandles: userHandles
            }}
            onUserHandleMouseDown={handleUserHandleMouseDown} 
        />
    );
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

The following table shows all the possible alignments of user handle around the node.

Offset	side	Output
0	Left
0	Right
0	Top
0	Bottom
1	Left
1	Right
1	Top
1	Bottom

User handle tooltip

The diagram provides support to show a tooltip when the mouse hovers over any user handle. To show the tooltip on mouse hover, set the tooltip property of the user handle with the tooltip content as shown in the following example.

index.jsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
let node1 = [{
    id: 'node1',
    offsetX: 300,
    offsetY: 200,
    height: 100,
    width: 100,
}];
let userHandles = [{
    name: 'clone',
    pathData:
      'M0,3.42 L1.36,3.42 L1.36,12.39 L9.62,12.39 L9.62,13.75 L1.36,13.75 C0.97,13.75,0.65,13.62,0.39,13.36 C0.13,13.1,0,12.78,0,12.39 Z M4.13,0 L12.39,0 C12.78,0,13.1,0.13,13.36,0.39 C13.62,0.65,13.75,0.97,13.75,1.36 L13.75,9.62 C13.75,10.01,13.62,10.33,13.36,10.6 C13.1,10.87,12.78,11.01,12.39,11.01 L4.13,11.01 C3.72,11.01,3.39,10.87,3.13,10.6 C2.87,10.33,2.74,10.01,2.74,9.62 L2.74,1.36 C2.74,0.97,2.87,0.65,3.13,0.39 C3.39,0.13,3.72,0,4.13,0 Z ',
    offset: 1,
    //Sets tooltip for user handle
    tooltip: { content: 'Clone Node' },
  },];
let diagramInstance;
function App() {
    const handleUserHandleMouseDown = (args) => {
        if (args.element) {
            //To clone the selected node
            diagramInstance.copy();
            diagramInstance.paste();
        }
    };
    return (<DiagramComponent id="container" ref={(diagram) => (diagramInstance = diagram)} width={"100%"} height={"600px"} nodes={node1} selectedItems={{
        //Define user handles in selectedItems property
        userHandles: userHandles 
    }}
    onUserHandleMouseDown={handleUserHandleMouseDown} 
    />);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent, NodeModel, UserHandleModel, UserHandleEventsArgs } from "@syncfusion/ej2-react-diagrams";
let node1: NodeModel[] = [{
    id: 'node1',
    offsetX: 300,
    offsetY: 200,
    height: 100,
    width: 100,
}];
let userHandles: UserHandleModel[] = [{
    name: 'clone',
    pathData:
      'M0,3.42 L1.36,3.42 L1.36,12.39 L9.62,12.39 L9.62,13.75 L1.36,13.75 C0.97,13.75,0.65,13.62,0.39,13.36 C0.13,13.1,0,12.78,0,12.39 Z M4.13,0 L12.39,0 C12.78,0,13.1,0.13,13.36,0.39 C13.62,0.65,13.75,0.97,13.75,1.36 L13.75,9.62 C13.75,10.01,13.62,10.33,13.36,10.6 C13.1,10.87,12.78,11.01,12.39,11.01 L4.13,11.01 C3.72,11.01,3.39,10.87,3.13,10.6 C2.87,10.33,2.74,10.01,2.74,9.62 L2.74,1.36 C2.74,0.97,2.87,0.65,3.13,0.39 C3.39,0.13,3.72,0,4.13,0 Z ',
    offset: 1,
    //Sets tooltip for user handle
    tooltip: { content: 'Clone Node' },
  },];
let diagramInstance: DiagramComponent;
function App() {
    const handleUserHandleMouseDown = (args: UserHandleEventsArgs) => {
        if (args.element) {
            //To clone the selected node
            diagramInstance.copy();
            diagramInstance.paste();
        }
    };
    return (
        <DiagramComponent id="container"
            ref={(diagram) => (diagramInstance = diagram)}
            width={"100%"}
            height={"600px"}
            nodes={node1}
            selectedItems={{
                //Define user handles in selectedItems property
                userHandles: userHandles
            }}
            onUserHandleMouseDown={handleUserHandleMouseDown} 
        />
    );
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

You can also customize other properties of the tooltip, such as position, width, height, etc. For more information refer to the tooltip section.

Appearance

The appearance of the user handle can be customized by using the size, borderColor, backgroundColor, borderWidth, visible, and pathColor properties of the userHandles.

The following example demonstrates, how to use these properties to customize the appearance of user handle

index.jsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
let node1 = [{
    id: 'node1',
    offsetX: 300,
    offsetY: 200,
    height: 100,
    width: 100,
}];
let userHandles = [{
    name: 'clone',
    pathData:
      'M0,3.42 L1.36,3.42 L1.36,12.39 L9.62,12.39 L9.62,13.75 L1.36,13.75 C0.97,13.75,0.65,13.62,0.39,13.36 C0.13,13.1,0,12.78,0,12.39 Z M4.13,0 L12.39,0 C12.78,0,13.1,0.13,13.36,0.39 C13.62,0.65,13.75,0.97,13.75,1.36 L13.75,9.62 C13.75,10.01,13.62,10.33,13.36,10.6 C13.1,10.87,12.78,11.01,12.39,11.01 L4.13,11.01 C3.72,11.01,3.39,10.87,3.13,10.6 C2.87,10.33,2.74,10.01,2.74,9.62 L2.74,1.36 C2.74,0.97,2.87,0.65,3.13,0.39 C3.39,0.13,3.72,0,4.13,0 Z ',
    offset: 1,
    //Sets the border width of user handle
    borderWidth: 5,
    //Sets the border color of user handle
    borderColor: '#64Abbb',
    //Sets the background color of user handle
    backgroundColor: 'yellow',
    //Sets the path data color of user handle
    pathColor: 'green',
    //Sets the size of user handle
    size: 40,
    //Sets the visibility of user handle
    visible: true,
  },];
let diagramInstance;
function App() {
    const handleUserHandleMouseDown = (args) => {
        if (args.element) {
            //To clone the selected node
            diagramInstance.copy();
            diagramInstance.paste();
        }
    };
    return (<DiagramComponent id="container" ref={(diagram) => (diagramInstance = diagram)} width={"100%"} height={"600px"} nodes={node1} selectedItems={{
        //Define user handles in selectedItems property
        userHandles: userHandles 
    }}
    onUserHandleMouseDown={handleUserHandleMouseDown} 
    />);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent, NodeModel, UserHandleModel, UserHandleEventsArgs } from "@syncfusion/ej2-react-diagrams";
let node1: NodeModel[] = [{
    id: 'node1',
    offsetX: 300,
    offsetY: 200,
    height: 100,
    width: 100,
}];
let userHandles: UserHandleModel[] = [{
    name: 'clone',
    pathData:
      'M0,3.42 L1.36,3.42 L1.36,12.39 L9.62,12.39 L9.62,13.75 L1.36,13.75 C0.97,13.75,0.65,13.62,0.39,13.36 C0.13,13.1,0,12.78,0,12.39 Z M4.13,0 L12.39,0 C12.78,0,13.1,0.13,13.36,0.39 C13.62,0.65,13.75,0.97,13.75,1.36 L13.75,9.62 C13.75,10.01,13.62,10.33,13.36,10.6 C13.1,10.87,12.78,11.01,12.39,11.01 L4.13,11.01 C3.72,11.01,3.39,10.87,3.13,10.6 C2.87,10.33,2.74,10.01,2.74,9.62 L2.74,1.36 C2.74,0.97,2.87,0.65,3.13,0.39 C3.39,0.13,3.72,0,4.13,0 Z ',
    offset: 1,
    //Sets the border width of user handle
    borderWidth: 5,
    //Sets the border color of user handle
    borderColor: '#64Abbb',
    //Sets the background color of user handle
    backgroundColor: 'yellow',
    //Sets the path data color of user handle
    pathColor: 'green',
    //Sets the size of user handle
    size: 40,
    //Sets the visibility of user handle
    visible: true,
  },];
let diagramInstance: DiagramComponent;
function App() {
    const handleUserHandleMouseDown = (args: UserHandleEventsArgs) => {
        if (args.element) {
            //To clone the selected node
            diagramInstance.copy();
            diagramInstance.paste();
        }
    };
    return (
        <DiagramComponent id="container"
            ref={(diagram) => (diagramInstance = diagram)}
            width={"100%"}
            height={"600px"}
            nodes={node1}
            selectedItems={{
                //Define user handles in selectedItems property
                userHandles: userHandles
            }}
            onUserHandleMouseDown={handleUserHandleMouseDown} 
        />
    );
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

Multiple user handle

Multiple user handles can be rendered for the selected objects (nodes/connectors) at a time to perform different operations.

Disable Nodes and disable Connectors

User handles are typically defined within the selectedItems property of the diagram, applying them universally to both nodes and connectors. However, in some scenarios, specific user handles may need to be excluded from connectors or nodes selectively. To address this, the disableNodes and disableConnectors properties come into play. These properties allow certain user handles to be disabled based on the type of selected item.

In the example below, multiple user handles are utilized for various functionalities, with some handles hidden selectively for nodes or connectors depending on their intended functionality.

index.jsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
let node1 = [{
    id: 'node1',
    offsetX: 300,
    offsetY: 300,
    height: 100,
    width: 100,
}];
let connector1 = [
    {
      id: 'connector1',
      type: 'Orthogonal',
      sourcePoint: { x: 100, y: 100 },
      targetPoint: { x: 300, y: 200 },
    },
  ];
let userHandles = [
  {
    name: 'clone',
    pathData:
      'M0,3.42 L1.36,3.42 L1.36,12.39 L9.62,12.39 L9.62,13.75 L1.36,13.75 C0.97,13.75,0.65,13.62,0.39,13.36 C0.13,13.1,0,12.78,0,12.39 Z M4.13,0 L12.39,0 C12.78,0,13.1,0.13,13.36,0.39 C13.62,0.65,13.75,0.97,13.75,1.36 L13.75,9.62 C13.75,10.01,13.62,10.33,13.36,10.6 C13.1,10.87,12.78,11.01,12.39,11.01 L4.13,11.01 C3.72,11.01,3.39,10.87,3.13,10.6 C2.87,10.33,2.74,10.01,2.74,9.62 L2.74,1.36 C2.74,0.97,2.87,0.65,3.13,0.39 C3.39,0.13,3.72,0,4.13,0 Z ',
    tooltip: { content: 'Clone' },
    offset: 1,
    side: 'Bottom',
  },
  {
    name: 'delete',
    pathData:
      'M0.97,3.04 L12.78,3.04 L12.78,12.21 C12.78,12.64,12.59,13,12.2,13.3 C11.82,13.6,11.35,13.75,10.8,13.75 L2.95,13.75 C2.4,13.75,1.93,13.6,1.55,13.3 C1.16,13,0.97,12.64,0.97,12.21 Z M4.43,0 L9.32,0 L10.34,0.75 L13.75,0.75 L13.75,2.29 L0,2.29 L0,0.75 L3.41,0.75 Z ',
    tooltip: { content: 'Delete' },
    offset: 0,
    side: 'Bottom',
  },
  {
    name: 'star',
    pathData:
      'M50,5 63,37 100,37 70,60 82,92 50,75 18,92 30,60 0,37 37,37z    ',
    tooltip: { content: 'Star' },
    offset: 0,
    side: 'Top',
    disableConnectors: true,
  },
  {
    name: 'triangle',
    pathData: 'M2,8 L5,2 L8,8 L2,8, z',
    tooltip: { content: 'Triangle' },
    offset: 1,
    side: 'Top',
    disableConnectors: true,
  },
  {
    name: 'rectangle',
    pathData: 'M10,10 L90,10 L90,90 L10,90 Z',
    tooltip: { content: 'Rectangle' },
    offset: 0.5,
    side: 'Left',
    disableConnectors: true,
  },
  {
    name: 'triangle',
    pathData: 'M2,8 L5,2 L8,8 L2,8, z',
    tooltip: { content: 'Triangle' },
    offset: 1,
    side: 'Top',
    disableConnectors: true,
  },
  {
    name: 'changeConnectorType',
    pathData:
      'M6.09,0 L13.75,6.88 L6.09,13.75 L6.09,9.64 L0,9.64 L0,4.11 L6.09,4.11 Z ',
    tooltip: { content: 'Change Connector Type' },
    offset: 0.7,
    side: 'Bottom',
    disableNodes: true,
  },];
let diagramInstance;
function App() {
    const handleUserHandleMouseDown = (args) => {
        switch (args.element.name) {
            // To clone the selected node
            case 'clone':
                diagramInstance.copy();
                diagramInstance.paste();
                break;
            case 'delete':
                diagramInstance.remove();
                break;
            case 'star':
            case 'rectangle':
            case 'triangle':
                diagramInstance.selectedItems.nodes[0].shape = {
                type: 'Basic',
                shape: args.element.tooltip.content,
                };
                diagramInstance.dataBind();
                break;
            case 'changeConnectorType':
                diagramInstance.selectedItems.connectors[0].type =
                diagramInstance.selectedItems.connectors[0].type === 'Orthogonal'
                  ? 'Straight'
                  : diagramInstance.selectedItems.connectors[0].type === 'Straight'
                  ? 'Bezier'
                  : 'Orthogonal';
                diagramInstance.dataBind();
                break;
        }
    };
    return (<DiagramComponent id="container" ref={(diagram) => (diagramInstance = diagram)} width={"100%"} height={"600px"} nodes={node1} connectors={connector1} selectedItems={{
        //Define user handles in selectedItems property
        userHandles: userHandles 
    }}
    onUserHandleMouseDown={handleUserHandleMouseDown} 
    />);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent, NodeModel, UserHandleModel, ConnectorModel, UserHandleEventsArgs } from "@syncfusion/ej2-react-diagrams";
let node1: NodeModel[] = [{
    id: 'node1',
    offsetX: 300,
    offsetY: 300,
    height: 100,
    width: 100,
}];
let connector1: ConnectorModel[] = [{
      id: 'connector1',
      type: 'Orthogonal',
      sourcePoint: { x: 100, y: 100 },
      targetPoint: { x: 300, y: 200 },
}];

let userHandles: UserHandleModel[] = [
  {
    name: 'clone',
    pathData:
      'M0,3.42 L1.36,3.42 L1.36,12.39 L9.62,12.39 L9.62,13.75 L1.36,13.75 C0.97,13.75,0.65,13.62,0.39,13.36 C0.13,13.1,0,12.78,0,12.39 Z M4.13,0 L12.39,0 C12.78,0,13.1,0.13,13.36,0.39 C13.62,0.65,13.75,0.97,13.75,1.36 L13.75,9.62 C13.75,10.01,13.62,10.33,13.36,10.6 C13.1,10.87,12.78,11.01,12.39,11.01 L4.13,11.01 C3.72,11.01,3.39,10.87,3.13,10.6 C2.87,10.33,2.74,10.01,2.74,9.62 L2.74,1.36 C2.74,0.97,2.87,0.65,3.13,0.39 C3.39,0.13,3.72,0,4.13,0 Z ',
    tooltip: { content: 'Clone' },
    offset: 1,
    side: 'Bottom',
  },
  {
    name: 'delete',
    pathData:
      'M0.97,3.04 L12.78,3.04 L12.78,12.21 C12.78,12.64,12.59,13,12.2,13.3 C11.82,13.6,11.35,13.75,10.8,13.75 L2.95,13.75 C2.4,13.75,1.93,13.6,1.55,13.3 C1.16,13,0.97,12.64,0.97,12.21 Z M4.43,0 L9.32,0 L10.34,0.75 L13.75,0.75 L13.75,2.29 L0,2.29 L0,0.75 L3.41,0.75 Z ',
    tooltip: { content: 'Delete' },
    offset: 0,
    side: 'Bottom',
  },
  {
    name: 'star',
    pathData:
      'M50,5 63,37 100,37 70,60 82,92 50,75 18,92 30,60 0,37 37,37z    ',
    tooltip: { content: 'Star' },
    offset: 0,
    side: 'Top',
    disableConnectors: true,
  },
  {
    name: 'triangle',
    pathData: 'M2,8 L5,2 L8,8 L2,8, z',
    tooltip: { content: 'Triangle' },
    offset: 1,
    side: 'Top',
    disableConnectors: true,
  },
  {
    name: 'rectangle',
    pathData: 'M10,10 L90,10 L90,90 L10,90 Z',
    tooltip: { content: 'Rectangle' },
    offset: 0.5,
    side: 'Left',
    disableConnectors: true,
  },
  {
    name: 'triangle',
    pathData: 'M2,8 L5,2 L8,8 L2,8, z',
    tooltip: { content: 'Triangle' },
    offset: 1,
    side: 'Top',
    disableConnectors: true,
  },
  {
    name: 'changeConnectorType',
    pathData:
      'M6.09,0 L13.75,6.88 L6.09,13.75 L6.09,9.64 L0,9.64 L0,4.11 L6.09,4.11 Z ',
    tooltip: { content: 'Change Connector Type' },
    offset: 0.7,
    side: 'Bottom',
    disableNodes: true,
  },];
let diagramInstance: DiagramComponent;
function App() {
    const handleUserHandleMouseDown = (args: UserHandleEventsArgs) => {
        switch (args.element.name) {
            // To clone the selected node
            case 'clone':
                diagramInstance.copy();
                diagramInstance.paste();
                break;
            case 'delete':
                diagramInstance.remove();
                break;
            case 'star':
            case 'rectangle':
            case 'triangle':
                diagramInstance.selectedItems.nodes[0].shape = {
                type: 'Basic',
                shape: args.element.tooltip.content,
                };
                diagramInstance.dataBind();
                break;
            case 'changeConnectorType':
                diagramInstance.selectedItems.connectors[0].type =
                diagramInstance.selectedItems.connectors[0].type === 'Orthogonal'
                  ? 'Straight'
                  : diagramInstance.selectedItems.connectors[0].type === 'Straight'
                  ? 'Bezier'
                  : 'Orthogonal';
                diagramInstance.dataBind();
                break;
        }
    };
    return (
        <DiagramComponent id="container"
            ref={(diagram) => (diagramInstance = diagram)}
            width={"100%"}
            height={"600px"}
            nodes={node1}
            connectors={connector1}
            selectedItems={{
                //Define user handles in selectedItems property
                userHandles: userHandles
            }}
            onUserHandleMouseDown={handleUserHandleMouseDown} 
        />
    );
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

Different types of user handle

Diagram provides support to render different types of user handles:

• Source: Renders an image as a user handle using an image source.
• Content: Renders a user handle using SVG content.
• pathData: Renders a user handle using custom path data.
• template: Renders a user handle using a predefined template (userHandleTemplate) defined in the diagram.

The precedence order for user handles is as follows:

1. pathData
2. Content
3. Source
4. userHandleTemplate

This means that if multiple options are used for the user handle, the one with higher precedence will be rendered.

The below example code demonstrating different types of user handles.

index.jsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
let node1 = [{
    id: 'node1',
    offsetX: 300,
    offsetY: 200,
    height: 100,
    width: 100,
}];
let userHandles = [ 
   {
    name: 'handle1',
    pathData:
      'M0,3.42 L1.36,3.42 L1.36,12.39 L9.62,12.39 L9.62,13.75 L1.36,13.75 C0.97,13.75,0.65,13.62,0.39,13.36 C0.13,13.1,0,12.78,0,12.39 Z M4.13,0 L12.39,0 C12.78,0,13.1,0.13,13.36,0.39 C13.62,0.65,13.75,0.97,13.75,1.36 L13.75,9.62 C13.75,10.01,13.62,10.33,13.36,10.6 C13.1,10.87,12.78,11.01,12.39,11.01 L4.13,11.01 C3.72,11.01,3.39,10.87,3.13,10.6 C2.87,10.33,2.74,10.01,2.74,9.62 L2.74,1.36 C2.74,0.97,2.87,0.65,3.13,0.39 C3.39,0.13,3.72,0,4.13,0 Z ',
    tooltip: { content: 'Path data user handle' },
    offset: 1,
    side: 'Bottom',
  },
  {
    name: 'handle2',
    source:
      'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAOEAAADhCAMAAAAJbSJIAAAAulBMVEUQpxH///9Qt0gAoAAAowD7/fv2/PYAqQAIpAlJs0Dm9OZRtklowGLh9OEiqSPe895exF/I7Mk4rzhwx3HS7tLx+vGAyoFYu1hlvmU6tzs/tz8yri5PvEdSt0oArQBcvV3W7NRPvUek2qCT1I6/4ryDz3214LFfwleu3qqa1JZXv09PwEVyyWzL68uB0IGt3a2K04p9x3kAmABeul4nsyg1qzVvw2+V1pW337UbsBxQtVAxtzEzrjCN1I0hiyvlAAANX0lEQVR4nO2dfXuiOhOHgQpZQBetYlcbXVEURXx7Tk/V7fb7f60noFXEBIIECL3O79rdP6xruZ1kZpJMEkHMV7KsaEZrNp50p179ZTAYSOjvS917707Gs9ZIU2Q55ycQcvtkxdQMe7z1HLXfXy6XFoTSVRBa6LX+s+p427FtaKaSG2g+hGZjZC+mdaguLSsA842HpEuXf8+v+KjPanO6sEcNM5dnYU8oNzqHveeqMDCafvqjS/dCL+pnXmhB1fX2h1WDvSkZE8qjw2LqQIQn4aAIClgh+l/OdHEYMYZkSmhsush49GQRTt+YyJTdjcHyodgRmrOd48JEjgRj6n6TdXYzdn2SEaHc6cKlJV06VhY7+pBLOO0waq0sCBVtVu8vJf3sVrLLN6XVr880hcHTZSc0R2OnD6UBC7SQBqi1voxH2VtrVkKzM3H7MDAeE/NdhT4Q9p1JJytjNkLT/nTgyT/kIP9zoTOxszFmIrS3TkbnSSHobO2SCDs755y15M3oTjslEGoTC7LyncmM1qdWMKE5l5aFsAVCTmcpzR/sjg8RKqv2UhoUY74TIQoeVnv1UHh8hNBYuKkSazaUA+guRoUQKrbXL5juS33PTm/G1ISNvQuZR3daQXffyJvQ9mBRDvRefk7upQ2O6QiVBcw/xMcQ+pkcXKRrqakItdJ64IVR8ntjqpaaglBuQUsqr4leES3YSjF2pCc052rxMQIrHaopwj81oTYpsweGFcznTKizOFpCY8oLoHTyqVPa6E9J2KlzBCj5jLBOOd6gI2xJRaahdIISXWSkIty8lu1CMRpIr3NGhPK8VzYNRv433ptTRI1kQmXMVxcMC46T85tEQnPsls1BEjKjO04MjEmEig/IXR88K0BMsmICocwz4BkxoS8mEM757YOB/Nif4FHjCbn0olH14hFjCe3Xsp+eSq+xoT+OsMN6tSUvDeISuBhCg7NclKgBrMek4WRCjafRRJyCkQZ5MEUkNCecjHepBCfEyE8ilHmPExFBYopKImw9XFJRktRVOsJGqbOGjwhCwgwcnlDxrOr0wZN0y8NnqHjCRb9ygLreW9AT2lVroidBbG6DI2x4VQoUV0HsZDiGUNmXt7iUSTrcY7oihtDmdlAfL3+wiGmn94Qjr5q9MJhE9e4T1DtCZaFWsYWe1b9fersjXHE9bZEo9y61iRKa7aq20ZNgO5qCRwnnVtnPmE2D5SaeUKt0E5WCp9diCSfLagMixOUkjrBjVdyEvqxODOGuxFISZoI7MqHt5lQLW6R0ybFJhOb24UihS2qBSmhncKsQCG3nUUCkenH6nTSPe2PEEKH5+XiwVyWtOK3in0XXb2beQoSdDCZUpby3EYbUeP6ZYEUn5E6vhOYEPu5mVInF5g9KGc+11zjEWyNeCUdZhoVFEwoJa0bOdRR1IVTGWWafCib8IcQj6up1afhCqL1kaKQlEMYi6tC5ZKcXwlmmhK0EwjhEXe/PooRytqW0MgiFOHcD61/O/Yuwk602thTCH3GI/a+A8UW4szIVrl0J5b3bzEcX5/FFGIeoW91bQjPj3MWFUFZ+/e8pH+3MKCFCJAGidmreEM6W2UYVIcL2k5CLat17whh3oy9nN4Q7djYslpCMaO3ChIaTceBbHiEJEQ0TjRDhJutEfomExKBhba6EchdmHNyXSYhHROl3V74Qjjz8yRUVISQFjdMiRkB4yLzaFCJ8/5mPBCIhCdE9fBHKi6SZD3pC9PtbOcmQSYQEd6Mu5DNhY5plWBElzF8YQhyiDqeNM+Eqa6zggBCDqJ8mM3zCQ/Zl+/IJ7z2qLsHDidDcZ69/4oAQEzTUvRkQNhgsa/NAeOdRddjWAsKRm32tggfCO0QduqOA0GZQpMcFYXQwpUuq7RMqi8yx4oZQMxr5SEskjHpU3d8zLIjmlMHC9jWnkfd/XnLRn/sxfiKiNTURodZkUJtwk5fWctETOWsjIsKmhggNFsUXpWbeEcSwu4EGImThaHgivPGoyNUI4phFfQlHhDeIy7EoyFuLwcYRnghDQUO3trIge9+OMORuLE8WFCaHWXFGeEGEjiKYTLYd8EZ4QeybwojJYR7cEZ6Chi49G0LrmxIGHlWX+i1htmRRBcUfYYCoS8uZMGZSq8chYRA0BsuxwKYakUdC390Mlnuhy2T/D5+Ewl/J6grvieGQ4hsYcEoo/IVTgWaShqaaLkT4g6TiCYWPtlCnaYTJ38HgSlgDJJVACKDwkvz0kqkkS/ySYhKkGD+zWPExQuGnkJx2q1BkI60MQkEYJHoSVWVUd9goizDRhhUnTASsPOH3t+F//bD6hBTx8EookyWS31MyYXJOcyU0mx89ki6z+tu32x98tLUyCd8o8tIQYY80Y/9UC1XuRX70UiphT0jeURki7NcIn/MDEMcWtd9lEqK8dJ045V1tQpdijF9pwqEnjJdJxcHVJlxTzLVVm3BCMV9K40trgLhC+vTSKJEQbCjmvK+Eyu6fXwTVL/FwEXnPP5MybVhbCWYKQpE0fEf6esv9GP8y/C+FsEGx9lTlvBQARZA9mJB8V5qwp1CsAVeZcNiUBXGcdJ1KlQnBWqaoxagyYW1DU09TZULQoamJqjAheNNo6tquhHKHWGZ+PfjmrpJ9pJRGOHQ1mtrEUNb28u8zXv++XnKabuQ9/76Xl9OAtSlT1JeGM+8nAb+odJOX3rxHKHOMX9vIQY2wE2/ECo8tjiuqOu/qEgLLONfqf1cbgnMlu7/f4psS+ue1n/fMFESYAfARwjf/FBeKfU8pCe92Ov+5jPEF1jud4wX8zQiXvWusCEV5/Kt9I2//9WTmtJ1Fc5pK9hvCnSJS7T9MR4isGNE156MoB4jR5XNoCY9jUbzuIWVHeL80Q/5JKolpCXsrUabaB5yWMHdREoJfwTOd93LHjfOrSjjci1dCIy5eVJXwYxUijD1ToaKE4I8YJpzFrF5UlPDcSC9nm8Ts5qYjLPA0M0obajeEYkyZKR2heRcHMSVvTCSOaAiHjnhLGHPGEA2hP7tMUvMrL9WO5DelEoUFBWBHCOU6cbaGjpBYVBpee6oR35VKNIAf0XOixFmfFPTpCIliNbZIJ7AQ5QihRpzLYEiYrUo4hcDb5Yh9ijP3Kkm4vj9zTxy5hKhfRcLhdf725uzLb0MI2hqGMDi/FNdQqdbxY3YoM5ovTaNj6BBaijNoQ4TtB3ai/+kWTgg8DUtIOkc4tDKjNdKfidsw5aIJ38Inz1OcBc3J2hO9wO/w7QGR87xxPbFyhMebywOiZ7JjbpipGiFwbp6X4lz9qhEOby+bubsb4f7ktooRDn/f/laK+y0qRgiMWELcHSWc7HuiBfyM/FaKe2ZUadRholYBhKAfvc2S5q6gwYt/cVtWSbqaOx/qhYcoEOa+J8x8xmv6dBSn/AFrOzORUDRw98q95v9wLAR69/fm0t679rfsh6fSMXoVEp4QV2Cj61VABO+YG2VJ9x9i+mLZz58o0Mfd7ZziDkvurQgwbZR8DymGUH8tbJrlIYEdNvci3iWLIeQbEXzgr3Um3AesQdyZplwjAsLt46Q7nVfY8gydX3dTmxFIYu7lxgyGdW7dDfhUCCOg2LvVceLTijeza5SEojaF2HVhHq0IXIPIQSYUjTr2BGX9L3fuBvRIF6vHE4odbDPVJf486kEkT0PEEYqtV+w8P29BozaPAYwnFDc9vBm5cjfgMw4wgVCcYy+15CpoDLfxCAmE8phwATI3VjyuEyp5EghFhXPE4xqfjdITiuYYX3zKR9BIBkwmRFYkXDDLgUcdJgNSEKIUtSfhbmkpP2iALUU1HQWhKM74jIu16PT244Ria8BfjgqEOdWz0xGKHfzlgSWGftCLS9XSE4rGlK/B1NBd0QFSE4raBEtYUkMFnkEJSE8omnOIregvw93UPokD3gyEoryC1r1PLWEGDoBZiprrFISopXo8zKOCjxFtC01N6C9p+GsaUTsW2RcBaCfnMY8TiqKNWdMoctkG9DYpqwrSEoqNhYsptS0oaADwjlt8YUsoKranltRQa71Nuhb6GCGK/siMAz0yYZz/YAoMdzFTakwJRWXVjsaN/GfgQP+Q3oCPEvrhX1r6WCHKfIPGEKQI8iwI/SzOinjVHNNwMGySJ7XzIkTjjZ0Dw2bMLWiAo3MQ0wR5VoRo2LgNjtG6NtU8rAjefqcNgewIRdOe+Ha8JuTMrQiO3uzBDsiEEDF2Jo4Kg3kcH5PtDBxAKZqdjS87IWIcjZ0+lAZnSnYeFYDjepWVjwUhCo/arN5fnpwOs8HUEHzsDRYbU1kQiv75Sl24PGUBLDwqGALXZlS3y4gQyZztnGDr1CAjIji+/dn7rZMNIjtCJGPT9XzIx4MG6nu9X/sVy03FTAnR124cFtMmfHvksg7kOd/c3XjFeFc4Y0IkudE57JtHgPpSGrja0WqP7RH7Te/sCX2ZiHLrfIAawozn9L+IGrLderMytKBxst72ng+hL0XTRpt1swdqiHMYJQXBa+hHveZ609E0kzXYRfkRBpJlRWm05pN13YW9twvfWw+69fVk3mooipyL5a76Px2BE1vbEb1JAAAAAElFTkSuQmCC',
    tooltip: { content: 'Image user handle' },
    offset: 0,
    side: 'Bottom',
  },
  {
    name: 'handle3',
    content:
      '<g><path d="M90,43.841c0,24.213-19.779,43.841-44.182,43.841c-7.747,0-15.025-1.98-21.357-5.455L0,90l7.975-23.522' +
      'c-4.023-6.606-6.34-14.354-6.34-22.637C1.635,19.628,21.416,0,45.818,0C70.223,0,90,19.628,90,43.841z M45.818,6.982' +
      'c-20.484,0-37.146,16.535-37.146,36.859c0,8.065,2.629,15.534,7.076,21.61L11.107,79.14l14.275-4.537' +
      'c5.865,3.851,12.891,6.097,20.437,6.097c20.481,0,37.146-16.533,37.146-36.857S66.301,6.982,45.818,6.982z' +
      ' M68.129,53.938' +
      'c-0.273-0.447-0.994-0.717-2.076-1.254c-1.084-0.537-6.41-3.138-7.4-3.495c-0.993-0.358-1.717-0.538-2.438,0.537' +
      'c-0.721,1.076-2.797,3.495-3.43,4.212c-0.632,0.719-1.263,0.809-2.347,0.271c-1.082-0.537-4.571-1.673-8.708-5.333' +
      'c-3.219-2.848-5.393-6.364-6.025-7.441c-0.631-1.075-0.066-1.656,0.475-2.191c0.488-0.482,1.084-1.255,1.625-1.882' +
      'c0.543-0.628,0.723-1.075,1.082-1.793c0.363-0.717,0.182-1.344-0.09-1.883c-0.27-0.537-2.438-5.825-3.34-7.977' +
      'c-0.902-2.15-1.803-1.792-2.436-1.792c-0.631,0-1.354-0.09-2.076-0.09c-0.722,0-1.896,0.269-2.889,1.344' +
      'c-0.992,1.076-3.789,3.676-3.789,8.963c0,5.288,3.879,10.397,4.422,11.113c0.541,0.716,7.49,11.92,18.5,16.223' +
      'C58.2,65.771,58.2,64.336,60.186,64.156c1.984-0.179,6.406-2.599,7.312-5.107' +
      'C68.398,56.537,68.398,54.386,68.129,53.938z"></path></g>',
    tooltip: { content: 'Content user handle' },
    offset: 0,
    side: 'Top',
  },
  {
    name: 'handle4',
    tooltip: { content: 'Template user handle' },
    offset: 1,
    side: 'Top',
  },];

function userHandletemplate() {
    return(
        <input type="color"  defaultValue="#008000" />
    )
}
function App() {
    return (<DiagramComponent id="container"  width={"100%"} height={"600px"} nodes={node1} userHandleTemplate={userHandletemplate.bind(this)} selectedItems={{
        //Define user handles in selectedItems property
        userHandles: userHandles 
    }}
    />);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent, NodeModel, UserHandleModel, UserHandleEventsArgs } from "@syncfusion/ej2-react-diagrams";
let node1: NodeModel[] = [{
    id: 'node1',
    offsetX: 300,
    offsetY: 200,
    height: 100,
    width: 100,
}];
let userHandles: UserHandleModel[] = [
    {
        name: 'handle1',
        pathData:
          'M0,3.42 L1.36,3.42 L1.36,12.39 L9.62,12.39 L9.62,13.75 L1.36,13.75 C0.97,13.75,0.65,13.62,0.39,13.36 C0.13,13.1,0,12.78,0,12.39 Z M4.13,0 L12.39,0 C12.78,0,13.1,0.13,13.36,0.39 C13.62,0.65,13.75,0.97,13.75,1.36 L13.75,9.62 C13.75,10.01,13.62,10.33,13.36,10.6 C13.1,10.87,12.78,11.01,12.39,11.01 L4.13,11.01 C3.72,11.01,3.39,10.87,3.13,10.6 C2.87,10.33,2.74,10.01,2.74,9.62 L2.74,1.36 C2.74,0.97,2.87,0.65,3.13,0.39 C3.39,0.13,3.72,0,4.13,0 Z ',
        tooltip: { content: 'Path data user handle' },
        offset: 1,
        side: 'Bottom',
      },
      {
        name: 'handle2',
        source:
          'data:image/png;base64,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',
        tooltip: { content: 'Image user handle' },
        offset: 0,
        side: 'Bottom',
      },
      {
        name: 'handle3',
        content:
          '<g><path d="M90,43.841c0,24.213-19.779,43.841-44.182,43.841c-7.747,0-15.025-1.98-21.357-5.455L0,90l7.975-23.522' +
          'c-4.023-6.606-6.34-14.354-6.34-22.637C1.635,19.628,21.416,0,45.818,0C70.223,0,90,19.628,90,43.841z M45.818,6.982' +
          'c-20.484,0-37.146,16.535-37.146,36.859c0,8.065,2.629,15.534,7.076,21.61L11.107,79.14l14.275-4.537' +
          'c5.865,3.851,12.891,6.097,20.437,6.097c20.481,0,37.146-16.533,37.146-36.857S66.301,6.982,45.818,6.982z' +
          ' M68.129,53.938' +
          'c-0.273-0.447-0.994-0.717-2.076-1.254c-1.084-0.537-6.41-3.138-7.4-3.495c-0.993-0.358-1.717-0.538-2.438,0.537' +
          'c-0.721,1.076-2.797,3.495-3.43,4.212c-0.632,0.719-1.263,0.809-2.347,0.271c-1.082-0.537-4.571-1.673-8.708-5.333' +
          'c-3.219-2.848-5.393-6.364-6.025-7.441c-0.631-1.075-0.066-1.656,0.475-2.191c0.488-0.482,1.084-1.255,1.625-1.882' +
          'c0.543-0.628,0.723-1.075,1.082-1.793c0.363-0.717,0.182-1.344-0.09-1.883c-0.27-0.537-2.438-5.825-3.34-7.977' +
          'c-0.902-2.15-1.803-1.792-2.436-1.792c-0.631,0-1.354-0.09-2.076-0.09c-0.722,0-1.896,0.269-2.889,1.344' +
          'c-0.992,1.076-3.789,3.676-3.789,8.963c0,5.288,3.879,10.397,4.422,11.113c0.541,0.716,7.49,11.92,18.5,16.223' +
          'C58.2,65.771,58.2,64.336,60.186,64.156c1.984-0.179,6.406-2.599,7.312-5.107' +
          'C68.398,56.537,68.398,54.386,68.129,53.938z"></path></g>',
        tooltip: { content: 'Content user handle' },
        offset: 0,
        side: 'Top',
      },
      {
        name: 'handle4',
        tooltip: { content: 'Template user handle' },
        offset: 1,
        side: 'Top',
      },
    ];
    function userHandletemplate() {
        return(
            <input type="color"  defaultValue="#008000" />
        )
    }   

function App() {
    return (
        <DiagramComponent id="container"
            width={"100%"}
            height={"600px"}
            nodes={node1}
            userHandleTemplate={userHandletemplate.bind(this)}
            selectedItems={{
                //Define user handles in selectedItems property
                userHandles: userHandles
            }}
        />
    );
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

User handle events

When interacting with user handles, certain events are triggered that can be used to customize the appearance and functionality of the handles. The user handle events are explained below.

• click - Triggered when the user handle is clicked.

• onUserHandleMouseEnter - Triggered when the mouse enters the user handle region.
• onUserHandleMouseDown - Triggered when the mouse is pressed down on the user handle.
• onUserHandleMouseUp - Triggered when the mouse is released on the user handle.
• onUserHandleMouseLeave - Triggered when the mouse leaves the user handle region.

In the following example, the above events are used to customize the appearance of user handles.

index.jsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
let node1 = [{
    id: 'node1',
    offsetX: 300,
    offsetY: 300,
    height: 100,
    width: 100,
}];
let userHandles = [
    {
        name: 'clone',
        pathData:
          'M0,3.42 L1.36,3.42 L1.36,12.39 L9.62,12.39 L9.62,13.75 L1.36,13.75 C0.97,13.75,0.65,13.62,0.39,13.36 C0.13,13.1,0,12.78,0,12.39 Z M4.13,0 L12.39,0 C12.78,0,13.1,0.13,13.36,0.39 C13.62,0.65,13.75,0.97,13.75,1.36 L13.75,9.62 C13.75,10.01,13.62,10.33,13.36,10.6 C13.1,10.87,12.78,11.01,12.39,11.01 L4.13,11.01 C3.72,11.01,3.39,10.87,3.13,10.6 C2.87,10.33,2.74,10.01,2.74,9.62 L2.74,1.36 C2.74,0.97,2.87,0.65,3.13,0.39 C3.39,0.13,3.72,0,4.13,0 Z ',
        offset: 1,
        //Sets the border width of user handle
        borderWidth: 5,
        //Sets the border color of user handle
        borderColor: '#64Abbb',
        //Sets the background color of user handle
        backgroundColor: 'yellow',
        //Sets the path data color of user handle
        pathColor: 'green',
        //Sets the size of user handle
        size: 40,
        //Sets the visibility of user handle
        visible: true,
      },];
let diagramInstance;
function App() {
    const handleUserHandleMouseDown = (args) => {
        if (args.element) {
            //To clone the selected node
            diagramInstance.copy();
            diagramInstance.paste();
          }
    }
    const onUserHandleMouseEnter = (args) =>  {
        if (args.element) {
          args.element.pathColor = 'red';
          args.element.backgroundColor = 'pink';
        }
    }
    const onUserHandleMouseUp =  (args) => {
        if (args.element) {
            args.element.pathColor = 'blue';
            args.element.backgroundColor = 'pink';
          }
    }
    const onUserHandleMouseLeave = (args) =>  {
        if (args.element) {
          args.element.pathColor = 'green';
          args.element.backgroundColor = 'yellow';
        }
    }

    return (<DiagramComponent id="container" ref={(diagram) => (diagramInstance = diagram)} width={"100%"} height={"600px"} nodes={node1}  selectedItems={{
        //Define user handles in selectedItems property
        userHandles: userHandles 
    }}
    handleUserHandleMouseDown={handleUserHandleMouseDown} 
    onUserHandleMouseEnter={onUserHandleMouseEnter} 
    onUserHandleMouseUp={onUserHandleMouseUp} 
    onUserHandleMouseLeave={onUserHandleMouseLeave} 
    />);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent, NodeModel, UserHandleModel, ConnectorModel, UserHandleEventsArgs } from "@syncfusion/ej2-react-diagrams";
let node1: NodeModel[] = [{
    id: 'node1',
    offsetX: 300,
    offsetY: 300,
    height: 100,
    width: 100,
}];

let userHandles: UserHandleModel[] = [
  {
    name: 'clone',
    pathData:
      'M0,3.42 L1.36,3.42 L1.36,12.39 L9.62,12.39 L9.62,13.75 L1.36,13.75 C0.97,13.75,0.65,13.62,0.39,13.36 C0.13,13.1,0,12.78,0,12.39 Z M4.13,0 L12.39,0 C12.78,0,13.1,0.13,13.36,0.39 C13.62,0.65,13.75,0.97,13.75,1.36 L13.75,9.62 C13.75,10.01,13.62,10.33,13.36,10.6 C13.1,10.87,12.78,11.01,12.39,11.01 L4.13,11.01 C3.72,11.01,3.39,10.87,3.13,10.6 C2.87,10.33,2.74,10.01,2.74,9.62 L2.74,1.36 C2.74,0.97,2.87,0.65,3.13,0.39 C3.39,0.13,3.72,0,4.13,0 Z ',
    offset: 1,
    //Sets the border width of user handle
    borderWidth: 5,
    //Sets the border color of user handle
    borderColor: '#64Abbb',
    //Sets the background color of user handle
    backgroundColor: 'yellow',
    //Sets the path data color of user handle
    pathColor: 'green',
    //Sets the size of user handle
    size: 40,
    //Sets the visibility of user handle
    visible: true,
  }
]
let diagramInstance: DiagramComponent;
function App() {
    const handleUserHandleMouseDown = (args: UserHandleEventsArgs) => {
        if (args.element) {
            //To clone the selected node
            diagramInstance.copy();
            diagramInstance.paste();
          }
    }
    const onUserHandleMouseEnter = (args: UserHandleEventsArgs) =>  {
        if (args.element) {
          args.element.pathColor = 'red';
          args.element.backgroundColor = 'pink';
        }
    }
    const onUserHandleMouseUp =  (args: UserHandleEventsArgs) => {
        if (args.element) {
            args.element.pathColor = 'blue';
            args.element.backgroundColor = 'pink';
          }
    }
    const onUserHandleMouseLeave = (args: UserHandleEventsArgs) =>  {
        if (args.element) {
          args.element.pathColor = 'green';
          args.element.backgroundColor = 'yellow';
        }
    }
    return (
        <DiagramComponent id="container"
            ref={(diagram) => (diagramInstance = diagram)}
            width={"100%"}
            height={"600px"}
            nodes={node1}
            selectedItems={{
                //Define user handles in selectedItems property
                userHandles: userHandles
            }}
            handleUserHandleMouseDown={handleUserHandleMouseDown} 
            onUserHandleMouseEnter={onUserHandleMouseEnter} 
            onUserHandleMouseUp={onUserHandleMouseUp} 
            onUserHandleMouseLeave={onUserHandleMouseLeave} 
        />
    );
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

Fixed user handles

Fixed user handles are used to perform specific actions when interacted with. Unlike regular user handles, fixedUserHandles are defined within the node/connector object, allowing different fixed user handles to be added to different nodes.

Create fixed user handles

To create the fixedUserHandles, define and add them to the collection of nodes and connectors. The pathData property of fixedUserHandles is used to define the path data for the fixed user handle. The id property in fixedUserHandles assigns a unique identifier to each handle. This identifier helps locate and modify fixed user handles during runtime. You can handle the click event of a fixed user handle using the fixedUserHandleClick event. This event allows customization based on the type of fixed user handle clicked.

The following code example demonstrates how to create fixed user handles for nodes and connectors and how to handle fixed user handle click:

index.jsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
let node = [{
        offsetX: 250,
        offsetY: 250,
        width: 100,
        height: 100,
        // A fixed user handle is created and stored in fixed user handle collection of Node.
        fixedUserHandles: [{
            id: 'color',
            pathData: 'M31.5,13.5 C31.5,20.95,24.44,27,15.75,27 C7.059999999999999,27,0,20.95,0,13.5 C0,6.050000000000001,7.06,0,15.75,0 C24.44,0,31.5,6.05,31.5,13.5 Z M13.12,4.5 L13.12,11.25 L5.25,11.25 L5.25,15.75 L13.12,15.75 L13.12,22.5 L18.38,22.5 L18.38,15.75 L26.25,15.75 L26.25,11.25 L18.38,11.25 L18.38,4.5 Z ',
            width: 20,
            height: 20,
        },]
    }];
let diagramInstance;
function App() {
    const fixedUserHandleClick = (args) => {
        let node = args.element;
        node.style.fill = node.style.fill === '#64A6' ? '#64Abbb' : '#64A6';
        diagramInstance.dataBind();
    };
    return (<DiagramComponent id="container" width={'100%'} height={'600px'} ref={(diagram) => (diagramInstance = diagram)} nodes={node} fixedUserHandleClick={fixedUserHandleClick}/>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent, NodeModel, FixedUserHandleClickEventArgs } from "@syncfusion/ej2-react-diagrams";
let node: NodeModel[] = [{
    offsetX: 250,
    offsetY: 250,
    width: 100,
    height: 100,
    // A fixed user handle is created and stored in fixed user handle collection of Node.
    fixedUserHandles: [{ 
      id: 'color',
      pathData: 'M31.5,13.5 C31.5,20.95,24.44,27,15.75,27 C7.059999999999999,27,0,20.95,0,13.5 C0,6.050000000000001,7.06,0,15.75,0 C24.44,0,31.5,6.05,31.5,13.5 Z M13.12,4.5 L13.12,11.25 L5.25,11.25 L5.25,15.75 L13.12,15.75 L13.12,22.5 L18.38,22.5 L18.38,15.75 L26.25,15.75 L26.25,11.25 L18.38,11.25 L18.38,4.5 Z ',
      width: 20,
      height: 20,
    }]
}];
let diagramInstance: DiagramComponent;
function App() {
  const fixedUserHandleClick = (args: FixedUserHandleClickEventArgs) => {
    let node = args.element;
    node.style.fill = node.style.fill === '#64A6' ? '#64Abbb' : '#64A6';
    diagramInstance.dataBind();
};
  return (
    <DiagramComponent
      id="container"
      ref={(diagram) => (diagramInstance = diagram)}
      width={'100%'}
      height={'600px'}
      nodes={node}
      fixedUserHandleClick={fixedUserHandleClick}
    />
  );
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

Note: The fixed user handle id need to be unique.

Alignment

Fixed user handles can be aligned relative to the node boundaries. It has margin, offset, padding properties to align them based on user’s needs.

Margin

Margin is an absolute value used to add some blank space in any one of its four sides. The fixed user handle can be displaced with the margin property.

Offset

The offset property of fixed user handle is used to align the user handle based on the x and y points. (0,0) represents the top-left corner and (1,1) represents the bottom-right corner.

Padding

The padding is used to leave the space that is inside the fixed user handle between the icon and border.

The following example demonstrates how to align fixed user handle for both node and connector.

index.jsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
let node = [{
    id: 'node1',
    offsetX: 300,
    offsetY: 300,
    height: 100,
    width: 100,
    style: { fill: '#64a6', strokeColor: '#64Abbb', strokeWidth: 3 },
    fixedUserHandles: [
      {
        id: 'color',
        pathData:
          'M31.5,13.5 C31.5,20.95,24.44,27,15.75,27 C7.059999999999999,27,0,20.95,0,13.5 C0,6.050000000000001,7.06,0,15.75,0 C24.44,0,31.5,6.05,31.5,13.5 Z M13.12,4.5 L13.12,11.25 L5.25,11.25 L5.25,15.75 L13.12,15.75 L13.12,22.5 L18.38,22.5 L18.38,15.75 L26.25,15.75 L26.25,11.25 L18.38,11.25 L18.38,4.5 Z ',
        width: 20,
        height: 20,
        offset: { x: 1, y: 0 },
        margin: { left: 20, bottom: 10 },
      },
    ],
}];
let connectors = [{
          id: 'connector1',
          sourcePoint: { x: 100, y: 100 },
          targetPoint: { x: 300, y: 200 },
          style: { strokeColor: '#64Abbb', fill: '#64A6', strokeWidth: 3 },
          fixedUserHandles: [
            {
              id: 'stroke',
              pathData:
                'M0,13.85 L15.62,13.85 L15.62,20 L25,9.74 L15.62,0 L15.62,6.41 L0,6.41 L0,13.85 Z ',
              width: 20,
              height: 10,
            },
          ],
}];
let diagramInstance;
function App() {
    const onFixedUserHandleMouseDown = (args) => {
        let node = args.element.parentObj;
        node.style.strokeColor =
        node.style.strokeColor === '#64A6' ? '#64Abbb' : '#64A6';
        diagramInstance.dataBind();
    };
    return (<DiagramComponent id="container" ref={(diagram) => (diagramInstance = diagram)} width={'100%'} height={'600px'} nodes={node} connectors={connectors} onFixedUserHandleMouseDown={onFixedUserHandleMouseDown}/>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent, NodeModel, ConnectorModel, FixedUserHandleEventsArgs } from "@syncfusion/ej2-react-diagrams";
let node: NodeModel[] = [{
  id: 'node1',
  offsetX: 300,
  offsetY: 300,
  height: 100,
  width: 100,
  style: { fill: '#64a6', strokeColor: '#64Abbb', strokeWidth: 3 },
  fixedUserHandles: [
    {
      id: 'color',
      pathData:
        'M31.5,13.5 C31.5,20.95,24.44,27,15.75,27 C7.059999999999999,27,0,20.95,0,13.5 C0,6.050000000000001,7.06,0,15.75,0 C24.44,0,31.5,6.05,31.5,13.5 Z M13.12,4.5 L13.12,11.25 L5.25,11.25 L5.25,15.75 L13.12,15.75 L13.12,22.5 L18.38,22.5 L18.38,15.75 L26.25,15.75 L26.25,11.25 L18.38,11.25 L18.38,4.5 Z ',
      width: 20,
      height: 20,
      offset: { x: 1, y: 0 },
      margin: { left: 20, bottom: 10 },
    },
  ],
}];
let connectors: ConnectorModel[] = [{
    id: 'connector1',
    sourcePoint: { x: 100, y: 100 },
    targetPoint: { x: 300, y: 200 },
    style: { strokeColor: '#64Abbb', fill: '#64A6', strokeWidth: 3 },
    fixedUserHandles: [
      {
        id: 'stroke',
        pathData:
          'M0,13.85 L15.62,13.85 L15.62,20 L25,9.74 L15.62,0 L15.62,6.41 L0,6.41 L0,13.85 Z ',
        width: 20,
        height: 10,
      },
    ],
}];
let diagramInstance: DiagramComponent;
function App() {
  const onFixedUserHandleMouseDown = (args: FixedUserHandleEventsArgs) => {
    let node = args.element.parentObj;
    node.style.strokeColor =
    node.style.strokeColor === '#64A6' ? '#64Abbb' : '#64A6';
    diagramInstance.dataBind();
  };
  return (
    <DiagramComponent
      id="container"
      ref={(diagram) => (diagramInstance = diagram)}
      width={'100%'}
      height={'600px'}
      nodes={node}
      connectors={connectors}
      onFixedUserHandleMouseDown={onFixedUserHandleMouseDown}
    />
  );
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

The following table shows all the possible alignments of fixed user handle around the node.

Offset	Margin	Output
(0,0)	Right = 20
(0.5,0)	Bottom = 20
(1,0)	Left = 20
(0,0.5)	Right = 20
(0,1)	Left = 20
(0,1)	Right = 20
(0.5,1)	Top = 20
(1,1)	Left = 20

Note: Both displacement and alignment are applicable only to connector fixed user handles.

Customizing the connector fixed user handle

The connector fixed user handle can be aligned relative to the connector boundaries. It has alignment, displacement and offset settings. The displacement property displaces the handle from its aligned position and its functioning only when the alignment property is set to ‘After’ or ‘Before’.

Offset

The offset, property of fixed user handle aligns the fixed user handle based on fractions. For example, 0 represents the left or top corner, 1 represents the bottom or right corner, and 0.5 represents the center.

Alignment

The connector’s fixed user handle can be aligned over its segment path using the alignment property of fixed user handle.

The following table shows all the possible offset and alignment combinations of connector fixed user handle.

Offset	Alignment	Output
0	Before
0.5	Before
1	Before
0	Center
0.5	Center
1	Center
0	After
0.5	After
1	After

Displacement

The displacement property displaces the handle from its aligned position based on the provided x and y value.

The following table shows all the possible alignment and displacement combinations of fixed user handle.

Displacement	Alignment	Output
x=10	Before
x=10	After
y=10	Before
y=10	After

Note: Displacement will not be done if the alignment is set to be center.

The following code explains how to customize the alignment of connector fixed user handle.

index.jsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
let connectors = [{
    id: 'connector1',
    type: 'Orthogonal',
    sourcePoint: { x: 300, y: 100 },
    targetPoint: { x: 400, y: 200 },
    // A fixed user handle is created and stored in fixed user handle collection of Connector.
     fixedUserHandles: [{ offset: 0.5, width: 20, alignment: 'Before', height: 20, id: 'usercon1',  displacement:{x:10,y:10}, pathData: 'M60.3,18H27.5c-3,0-5.5,2.4-5.5,5.5v38.2h5.5V23.5h32.7V18z M68.5,28.9h-30c-3,0-5.5,2.4-5.5,5.5v38.2c0,3,2.4,5.5,5.5,5.5h30c3,0,5.5-2.4,5.5-5.5V34.4C73.9,31.4,71.5,28.9,68.5,28.9z M68.5,72.5h-30V34.4h30V72.5z' }]
    }];
function App() {
    return (<DiagramComponent id="container" width={'100%'} height={'600px'} connectors={connectors}/>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent, ConnectorModel } from "@syncfusion/ej2-react-diagrams";
let connectors: ConnectorModel = [{
    id: 'connector1',
    type: 'Orthogonal',
    sourcePoint: { x: 300, y: 100 },
    targetPoint: { x: 400, y: 200 },
    // A fixed user handle is created and stored in fixed user handle collection of Connector.
    fixedUserHandles: [{ offset: 0.5, width: 20, alignment: 'Before', height: 20, id: 'usercon1',  displacement:{x:10,y:10}, pathData: 'M60.3,18H27.5c-3,0-5.5,2.4-5.5,5.5v38.2h5.5V23.5h32.7V18z M68.5,28.9h-30c-3,0-5.5,2.4-5.5,5.5v38.2c0,3,2.4,5.5,5.5,5.5h30c3,0,5.5-2.4,5.5-5.5V34.4C73.9,31.4,71.5,28.9,68.5,28.9z M68.5,72.5h-30V34.4h30V72.5z' }]
}];
function App() {
  return (
    <DiagramComponent
      id="container"
      width={'100%'}
      height={'600px'}
      connectors={connectors}
    />
  );
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

Fixed user handle tooltip

The diagram provides support to show a tooltip when the mouse hovers over any fixed user handle. To show the tooltip on mouse hover, set the tooltip property of the fixed user handle with the tooltip content as shown in the following example.

index.jsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
let node = [{
    id: 'node1',
    offsetX: 300,
    offsetY: 300,
    height: 100,
    width: 100,
    style: { fill: '#64a6', strokeColor: '#64Abbb', strokeWidth: 3 },
    fixedUserHandles: [
      {
        id: 'color',
        pathData:
          'M31.5,13.5 C31.5,20.95,24.44,27,15.75,27 C7.059999999999999,27,0,20.95,0,13.5 C0,6.050000000000001,7.06,0,15.75,0 C24.44,0,31.5,6.05,31.5,13.5 Z M13.12,4.5 L13.12,11.25 L5.25,11.25 L5.25,15.75 L13.12,15.75 L13.12,22.5 L18.38,22.5 L18.38,15.75 L26.25,15.75 L26.25,11.25 L18.38,11.25 L18.38,4.5 Z ',
        width: 20,
        height: 20,
        offset: { x: 1, y: 0 },
        margin: { left: 20, bottom: 10 },
        //Tooltip for fixed user handle
        tooltip: { content: 'Change stroke color' },
      },
    ],
    }];
let connectors = [{
          id: 'connector1',
          sourcePoint: { x: 100, y: 100 },
          targetPoint: { x: 300, y: 200 },
          style: { strokeColor: '#64Abbb', fill: '#64A6', strokeWidth: 3 },
          fixedUserHandles: [
            {
              id: 'stroke',
              pathData:
                'M0,13.85 L15.62,13.85 L15.62,20 L25,9.74 L15.62,0 L15.62,6.41 L0,6.41 L0,13.85 Z ',
              width: 20,
              height: 10,
              //Offset of fixed user handle
              offset: 0.5,
              //Tooltip for fixed user handle
              tooltip: { content: 'Change stroke color' },
            },
          ],
    }];
let diagramInstance;
function App() {
    const onFixedUserHandleMouseDown = (args) => {
        let node = args.element.parentObj;
        node.style.strokeColor =
        node.style.strokeColor === '#64A6' ? '#64Abbb' : '#64A6';
        diagramInstance.dataBind();
    };
    return (<DiagramComponent id="container" ref={(diagram) => (diagramInstance = diagram)} width={'100%'} height={'600px'} nodes={node} connectors={connectors} onFixedUserHandleMouseDown={onFixedUserHandleMouseDown}/>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent, NodeModel, ConnectorModel, FixedUserHandleEventsArgs } from "@syncfusion/ej2-react-diagrams";
let node: NodeModel[] = [{
  id: 'node1',
  offsetX: 300,
  offsetY: 300,
  height: 100,
  width: 100,
  style: { fill: '#64a6', strokeColor: '#64Abbb', strokeWidth: 3 },
  fixedUserHandles: [
    {
      id: 'color',
      pathData:
        'M31.5,13.5 C31.5,20.95,24.44,27,15.75,27 C7.059999999999999,27,0,20.95,0,13.5 C0,6.050000000000001,7.06,0,15.75,0 C24.44,0,31.5,6.05,31.5,13.5 Z M13.12,4.5 L13.12,11.25 L5.25,11.25 L5.25,15.75 L13.12,15.75 L13.12,22.5 L18.38,22.5 L18.38,15.75 L26.25,15.75 L26.25,11.25 L18.38,11.25 L18.38,4.5 Z ',
      width: 20,
      height: 20,
      offset: { x: 1, y: 0 },
      margin: { left: 20, bottom: 10 },
      //Tooltip for fixed user handle
      tooltip: { content: 'Change stroke color' },
    },
  ],
}];
let connectors: ConnectorModel[] = [{
  id: 'connector1',
  sourcePoint: { x: 100, y: 100 },
  targetPoint: { x: 300, y: 200 },
  style: { strokeColor: '#64Abbb', fill: '#64A6', strokeWidth: 3 },
  fixedUserHandles: [
    {
      id: 'stroke',
      pathData:
        'M0,13.85 L15.62,13.85 L15.62,20 L25,9.74 L15.62,0 L15.62,6.41 L0,6.41 L0,13.85 Z ',
      width: 20,
      height: 10,
      //Offset of fixed user handle
      offset: 0.5,
      //Tooltip for fixed user handle
      tooltip: { content: 'Change stroke color' },
    }],
}];
let diagramInstance: DiagramComponent;
function App() {
  const onFixedUserHandleMouseDown = (args: FixedUserHandleEventsArgs) => {
    let node = args.element.parentObj;
    node.style.strokeColor =
    node.style.strokeColor === '#64A6' ? '#64Abbb' : '#64A6';
    diagramInstance.dataBind();
  };
  return (
    <DiagramComponent
      id="container"
      width={'100%'}
      height={'600px'}
      nodes={node}
      connectors={connectors}
      onFixedUserHandleMouseDown={onFixedUserHandleMouseDown}
    />
  );
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

You can also customize other properties of the tooltip, such as position, width, height, etc. For more information refer to the tooltip section.

Appearance

The appearance of the fixed user handle can be customized by using the cornerRadius, fill, handleStrokeColor, handleStrokeWidth, iconStrokeColor, iconStrokeWidth and visibility properties of the fixed user handles.

Size

The height and width properties of fixed user handle is used to define the size of the fixed user handle.

Style

The fixed user handle’s iconStrokeColor and iconStrokeWidth property used to change the stroke color and stroke width of the given pathData.

The fixed user handle’s handleStrokeColor and handleStrokeWidth, properties are used to define the stroke color and stroke width of the fixed user handle and the fill, property is used to define the fill color of fixed user handle.

The cornerRadius property of the fixed user handle is used to apply border radius for the fixed user handle.

The visibility property of the fixed user handle enables or disables the visibility of fixed user handle.

The following example demonstrates, how to use these properties to customize the appearance of the fixed user handle.

index.jsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
let node = [{
    id: 'node1',
    offsetX: 300,
    offsetY: 300,
    height: 100,
    width: 100,
    style: { strokeColor: '#64Abbb', strokeWidth: 3 },
    fixedUserHandles: [
      {
        id: 'color',
        pathData:
          'M31.5,13.5 C31.5,20.95,24.44,27,15.75,27 C7.059999999999999,27,0,20.95,0,13.5 C0,6.050000000000001,7.06,0,15.75,0 C24.44,0,31.5,6.05,31.5,13.5 Z M13.12,4.5 L13.12,11.25 L5.25,11.25 L5.25,15.75 L13.12,15.75 L13.12,22.5 L18.38,22.5 L18.38,15.75 L26.25,15.75 L26.25,11.25 L18.38,11.25 L18.38,4.5 Z ',
        width: 30,
        height: 30,
        offset: { x: 1, y: 0 },
        margin: { left: 20, bottom: 10 },
        //Sets the stroke color of fixed user handle
        handleStrokeColor: 'green',
        //Sets the stroke width of fixed user handle
        handleStrokeWidth: 4,
        //Sets the stroke color of icon
        iconStrokeColor: '#64Abbb',
        //Sets the stroke width of icon
        iconStrokeWidth: 1,
        //Sets the fill color of the fixed user handle
        fill: 'yellow',
        //Sets the corner radius of the fixed user handle
        cornerRadius: 5,
      },
    ],
  }];
let connector = [{
    id: 'connector1',
    sourcePoint: { x: 100, y: 100 },
    targetPoint: { x: 300, y: 200 },
    style: { strokeColor: '#64Abbb', fill: '#64A6', strokeWidth: 3 },
    fixedUserHandles: [
      {
        id: 'stroke',
        pathData:
          'M0,13.85 L15.62,13.85 L15.62,20 L25,9.74 L15.62,0 L15.62,6.41 L0,6.41 L0,13.85 Z ',
        width: 30,
        height: 25,
        //Offset of fixed user handle
        offset: 0.5,
        //Sets the stroke color of fixed user handle
        handleStrokeColor: 'green',
        //Sets the stroke width of fixed user handle
        handleStrokeWidth: 4,
        //Sets the stroke color of icon
        iconStrokeColor: '#64Abbb',
        //Sets the stroke width of icon
        iconStrokeWidth: 1,
        //Sets the fill color of the fixed user handle
        fill: 'yellow',
        //Sets the corner radius of the fixed user handle
        cornerRadius: 5,
      },
    ],
  }];
let diagramInstance;
function App() {
    const onFixedUserHandleMouseDown = (args) => {
        let node = args.element.parentObj;
        node.style.strokeColor =
        node.style.strokeColor === '#64A6' ? '#64Abbb' : '#64A6';
        diagramInstance.dataBind();
    };
    return (<DiagramComponent id="container"  ref={(diagram) => (diagramInstance = diagram)} width={'100%'} height={'600px'} nodes={node} connectors={connector} onFixedUserHandleMouseDown={onFixedUserHandleMouseDown}/>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent, NodeModel, ConnectorModel, FixedUserHandleEventsArgs } from "@syncfusion/ej2-react-diagrams";
let node: NodeModel[] = [{
  id: 'node1',
  offsetX: 300,
  offsetY: 300,
  height: 100,
  width: 100,
  style: { strokeColor: '#64Abbb', strokeWidth: 3 },
  fixedUserHandles: [
    {
      id: 'color',
      pathData:
        'M31.5,13.5 C31.5,20.95,24.44,27,15.75,27 C7.059999999999999,27,0,20.95,0,13.5 C0,6.050000000000001,7.06,0,15.75,0 C24.44,0,31.5,6.05,31.5,13.5 Z M13.12,4.5 L13.12,11.25 L5.25,11.25 L5.25,15.75 L13.12,15.75 L13.12,22.5 L18.38,22.5 L18.38,15.75 L26.25,15.75 L26.25,11.25 L18.38,11.25 L18.38,4.5 Z ',
      width: 30,
      height: 30,
      offset: { x: 1, y: 0 },
      margin: { left: 20, bottom: 10 },
      //Sets the stroke color of fixed user handle
      handleStrokeColor: 'green',
      //Sets the stroke width of fixed user handle
      handleStrokeWidth: 4,
      //Sets the stroke color of icon
      iconStrokeColor: '#64Abbb',
      //Sets the stroke width of icon
      iconStrokeWidth: 1,
      //Sets the fill color of the fixed user handle
      fill: 'yellow',
      //Sets the corner radius of the fixed user handle
      cornerRadius: 5,
    },
  ],
}];
let connector: ConnectorModel[] = [{
  id: 'connector1',
  sourcePoint: { x: 100, y: 100 },
  targetPoint: { x: 300, y: 200 },
  style: { strokeColor: '#64Abbb', fill: '#64A6', strokeWidth: 3 },
  fixedUserHandles: [
    {
      id: 'stroke',
      pathData:
        'M0,13.85 L15.62,13.85 L15.62,20 L25,9.74 L15.62,0 L15.62,6.41 L0,6.41 L0,13.85 Z ',
      width: 30,
      height: 25,
      //Offset of fixed user handle
      offset: 0.5,
      //Sets the stroke color of fixed user handle
      handleStrokeColor: 'green',
      //Sets the stroke width of fixed user handle
      handleStrokeWidth: 4,
      //Sets the stroke color of icon
      iconStrokeColor: '#64Abbb',
      //Sets the stroke width of icon
      iconStrokeWidth: 1,
      //Sets the fill color of the fixed user handle
      fill: 'yellow',
      //Sets the corner radius of the fixed user handle
      cornerRadius: 5,
    },
  ],
}];
let diagramInstance: DiagramComponent;
function App() {
  const onFixedUserHandleMouseDown = (args: FixedUserHandleEventsArgs) => {
    let node = args.element.parentObj;
    node.style.strokeColor =
    node.style.strokeColor === '#64A6' ? '#64Abbb' : '#64A6';
    diagramInstance.dataBind();
  };
  return (
    <DiagramComponent
      id="container"
      ref={(diagram) => (diagramInstance = diagram)}
      width={'100%'}
      height={'600px'}
      nodes={node}
      connectors={connector}
      onFixedUserHandleMouseDown={onFixedUserHandleMouseDown}
    />
  );
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

Customizing Fixed User Handles with HTML Templates

Fixed user handles are interactive elements added to nodes and connectors. Their appearance can be customized using HTML templates. To render fixed user handle with HTML templates, we need to create an HTML element inside a <script> tag then add the template reference using the fixedUserHandleTemplate property in the diagram model.

index.jsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
let diagramInstance;
let colorPickerInstance;
let node = [ {
    id:"node1",
    offsetX: 250,
    offsetY: 250,
    width: 100,
    height: 100,
    fixedUserHandles: [{ offset: { x: 0, y: 0 }, margin: { right: 20 }, width: 50, height: 20, id: 'usercon1' }]
}];
let connector = [{
    id: "connector1",
    
    sourcePoint: {
        x: 400,
        y: 200
    },
    targetPoint: {
        x: 500,
        y: 300
    }, type: 'Orthogonal',
    fixedUserHandles: [{ offset: 0.5, width: 120, alignment: 'Before', height: 20, id: 'usercon2', displacement: { x: 10, y: 10 } }]
}];
function fixedUserHandleTemplate(props) {
    const { id } = props; 
    {
        return (
            <div style={{ width: '100%', height: '100%' }}>
               {id === 'usercon1' ? (
                <input 
                    id="colorPicker" 
                    ref={colorPicker => (colorPickerInstance = colorPicker)} 
                    type="color" 
                    defaultValue="#008000" 
                    onChange={handleColorChange}
                />
            ) : id === 'usercon2' ? (
                <input 
                    type="button" 
                    value="FixedUserHandleTemplate" 
                    style={{ width:'width', color: 'red' }} // Apply width and color
                />
            ) : null}
            </div>
        );
    }
}
function handleColorChange()
{
    let currentColor = colorPickerInstance.value;
    diagramInstance.nodes[0].style.fill = currentColor;
}
function App() {
    return (<DiagramComponent id="container" width={'100%'} height={'600px'} nodes={node} connectors={connector} ref={diagram => (diagramInstance = diagram)}  fixedUserHandleTemplate={fixedUserHandleTemplate.bind(this)}/>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent, ConnectorModel, NodeModel } from "@syncfusion/ej2-react-diagrams";
let diagramInstance;
let colorPickerInstance;
let node: NodeModel = [ {
    id:"node1",
    offsetX: 250,
    offsetY: 250,
    width: 100,
    height: 100,
    fixedUserHandles: [{ offset: { x: 0, y: 0 }, margin: { right: 20 }, width: 50, height: 20, id: 'usercon1' }]
}];
let connectors: ConnectorModel = [{
    id: "connector1",
    sourcePoint: {
        x: 400,
        y: 200
    },
    targetPoint: {
        x: 500,
        y: 300
    }, type: 'Orthogonal',
    fixedUserHandles: [{ offset: 0.5, width: 120, alignment: 'Before', height: 20, id: 'usercon2', displacement: { x: 10, y: 10 } }]

}];
function fixedUserHandleTemplate(props) {
    const { id } = props; 
    {
        return (
            <div style={{ width: '100%', height: '100%' }}>
               {id === 'usercon1' ? (
                <input 
                    id="colorPicker" 
                    ref={colorPicker => (colorPickerInstance = colorPicker)} 
                    type="color" 
                    defaultValue="#008000" 
                    onChange={handleColorChange}
                />
            ) : id === 'usercon2' ? (
                <input 
                    type="button" 
                    value="FixedUserHandleTemplate" 
                    style={{ width:'width', color: 'red' }} // Apply width and color
                />
            ) : null}
            </div>
        );
    }
}
function handleColorChange()
{
    let currentColor = colorPickerInstance.value;
    diagramInstance.nodes[0].style.fill = currentColor;
}
function App() {
  return (
    <DiagramComponent
      id="container"
      width={'100%'}
      height={'600px'}
      nodes={node}
      connectors={connectors}
      ref={diagram => (diagramInstance = diagram)}  fixedUserHandleTemplate={fixedUserHandleTemplate.bind(this)}
    />
  );
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

Fixed user handle events

When interacting with fixed user handles, certain events are triggered that can be used to customize the appearance and functionality of the handles. The fixed user handle events are explained below.

• click - Triggered when the fixed user handle is clicked.
• onFixedUserHandleMouseEnter - Triggered when the mouse enters the fixed user handle region.
• onFixedUserHandleMouseDown - Triggered when the mouse is pressed down on the fixed user handle.
• onFixedUserHandleMouseUp - Triggered when the mouse is released on the fixed user handle.
• onFixedUserHandleMouseLeave - Triggered when the mouse leaves the fixed user handle region.
• fixedUserHandleClick - Triggered when the fixed user handle is clicked.

In the following example, the above events are used to customize the appearance of fixed user handles.

index.jsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
let node = [{
    id: 'node1',
    offsetX: 300,
    offsetY: 300,
    height: 100,
    width: 100,
    style: { fill: '#64a6', strokeColor: '#64Abbb', strokeWidth: 3 },
    fixedUserHandles: [
      {
        id: 'color',
        pathData:
          'M31.5,13.5 C31.5,20.95,24.44,27,15.75,27 C7.059999999999999,27,0,20.95,0,13.5 C0,6.050000000000001,7.06,0,15.75,0 C24.44,0,31.5,6.05,31.5,13.5 Z M13.12,4.5 L13.12,11.25 L5.25,11.25 L5.25,15.75 L13.12,15.75 L13.12,22.5 L18.38,22.5 L18.38,15.75 L26.25,15.75 L26.25,11.25 L18.38,11.25 L18.38,4.5 Z ',
        width: 30,
        height: 30,
        offset: { x: 1, y: 0 },
        margin: { left: 20, bottom: 10 },
        //Sets the stroke color of fixed user handle
        handleStrokeColor: 'green',
        //Sets the stroke width of fixed user handle
        handleStrokeWidth: 4,
        //Sets the stroke color of icon
        iconStrokeColor: '#64Abbb',
        //Sets the stroke width of icon
        iconStrokeWidth: 1,
        //Sets the fill color of the fixed user handle
        fill: 'yellow',
        //Sets the corner radius of the fixed user handle
        cornerRadius: 5,
      },
    ],
  }];
let connector = [{
    id: 'connector1',
    sourcePoint: { x: 100, y: 100 },
    targetPoint: { x: 300, y: 200 },
    style: { strokeColor: '#64Abbb', fill: '#64A6', strokeWidth: 3 },
    fixedUserHandles: [
      {
        id: 'stroke',
        pathData:
          'M0,13.85 L15.62,13.85 L15.62,20 L25,9.74 L15.62,0 L15.62,6.41 L0,6.41 L0,13.85 Z ',
        width: 30,
        height: 25,
        //Offset of fixed user handle
        offset: 0.5,
        //Sets the stroke color of fixed user handle
        handleStrokeColor: 'green',
        //Sets the stroke width of fixed user handle
        handleStrokeWidth: 4,
        //Sets the stroke color of icon
        iconStrokeColor: '#64Abbb',
        //Sets the stroke width of icon
        iconStrokeWidth: 1,
        //Sets the fill color of the fixed user handle
        fill: 'yellow',
        //Sets the corner radius of the fixed user handle
        cornerRadius: 5,
      },
    ],
  }];
let diagramInstance;
function App() {
    const onFixedUserHandleMouseDown = (args) => {
        let node = args.element.parentObj;
        node.style.strokeColor =
        node.style.strokeColor === '#64A6' ? '#64Abbb' : '#64A6';
        diagramInstance.dataBind();
    }
    const onFixedUserHandleMouseEnter = (args) => {
      if (args.element) {
        args.element.fill = 'red';
        args.element.handleStrokeColor = 'pink';
      }
    }
    const onFixedUserHandleMouseUp = (args) => {
      if (args.element) {
        args.element.fill = 'blue';
        args.element.handleStrokeColor = 'pink';
      }
    }

    const onFixedUserHandleMouseLeave = (args) => {
      if (args.element) {
        args.element.fill = 'yellow';
        args.element.handleStrokeColor = 'green';
      }
    }
    return (<DiagramComponent id="container"  ref={(diagram) => (diagramInstance = diagram)} width={'100%'} height={'600px'} nodes={node} connectors={connector} onFixedUserHandleMouseDown={onFixedUserHandleMouseDown} onFixedUserHandleMouseEnter={onFixedUserHandleMouseEnter} onFixedUserHandleMouseUp={onFixedUserHandleMouseUp} onFixedUserHandleMouseLeave={onFixedUserHandleMouseLeave}/>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);

index.tsx

import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent, NodeModel, ConnectorModel, FixedUserHandleEventsArgs } from "@syncfusion/ej2-react-diagrams";
let node: NodeModel[] = [{
  id: 'node1',
  offsetX: 300,
  offsetY: 300,
  height: 100,
  width: 100,
  style: { fill: '#64a6', strokeColor: '#64Abbb', strokeWidth: 3 },
  fixedUserHandles: [
    {
      id: 'color',
      pathData:
        'M31.5,13.5 C31.5,20.95,24.44,27,15.75,27 C7.059999999999999,27,0,20.95,0,13.5 C0,6.050000000000001,7.06,0,15.75,0 C24.44,0,31.5,6.05,31.5,13.5 Z M13.12,4.5 L13.12,11.25 L5.25,11.25 L5.25,15.75 L13.12,15.75 L13.12,22.5 L18.38,22.5 L18.38,15.75 L26.25,15.75 L26.25,11.25 L18.38,11.25 L18.38,4.5 Z ',
      width: 30,
      height: 30,
      offset: { x: 1, y: 0 },
      margin: { left: 20, bottom: 10 },
      //Sets the stroke color of fixed user handle
      handleStrokeColor: 'green',
      //Sets the stroke width of fixed user handle
      handleStrokeWidth: 4,
      //Sets the stroke color of icon
      iconStrokeColor: '#64Abbb',
      //Sets the stroke width of icon
      iconStrokeWidth: 1,
      //Sets the fill color of the fixed user handle
      fill: 'yellow',
      //Sets the corner radius of the fixed user handle
      cornerRadius: 5,
    },
  ],
}];
let connector: ConnectorModel[] = [{
  id: 'connector1',
    sourcePoint: { x: 100, y: 100 },
    targetPoint: { x: 300, y: 200 },
    style: { strokeColor: '#64Abbb', fill: '#64A6', strokeWidth: 3 },
    fixedUserHandles: [
      {
        id: 'stroke',
        pathData:
          'M0,13.85 L15.62,13.85 L15.62,20 L25,9.74 L15.62,0 L15.62,6.41 L0,6.41 L0,13.85 Z ',
        width: 30,
        height: 25,
        //Offset of fixed user handle
        offset: 0.5,
        //Sets the stroke color of fixed user handle
        handleStrokeColor: 'green',
        //Sets the stroke width of fixed user handle
        handleStrokeWidth: 4,
        //Sets the stroke color of icon
        iconStrokeColor: '#64Abbb',
        //Sets the stroke width of icon
        iconStrokeWidth: 1,
        //Sets the fill color of the fixed user handle
        fill: 'yellow',
        //Sets the corner radius of the fixed user handle
        cornerRadius: 5,
      },
    ],
}];
let diagramInstance: DiagramComponent;
function App() {
  const onFixedUserHandleMouseDown = (args: FixedUserHandleEventsArgs) => {
    let node = args.element.parentObj;
    node.style.strokeColor =
    node.style.strokeColor === '#64A6' ? '#64Abbb' : '#64A6';
    diagramInstance.dataBind();
  }
  const onFixedUserHandleMouseEnter = (args: FixedUserHandleEventsArgs) => {
    if (args.element) {
      args.element.fill = 'red';
      args.element.handleStrokeColor = 'pink';
    }
  }
  const onFixedUserHandleMouseUp = (args: FixedUserHandleEventsArgs) => {
    if (args.element) {
      args.element.fill = 'blue';
      args.element.handleStrokeColor = 'pink';
    }
  }
  const onFixedUserHandleMouseLeave = (args: FixedUserHandleEventsArgs) => {
    if (args.element) {
      args.element.fill = 'yellow';
      args.element.handleStrokeColor = 'green';
    }
  }
  return (
    <DiagramComponent
      id="container"
      ref={(diagram) => (diagramInstance = diagram)}
      width={'100%'}
      height={'600px'}
      nodes={node}
      connectors={connector}
      onFixedUserHandleMouseDown={onFixedUserHandleMouseDown}
      onFixedUserHandleMouseEnter={onFixedUserHandleMouseEnter} 
      onFixedUserHandleMouseUp={onFixedUserHandleMouseUp}
      onFixedUserHandleMouseLeave={onFixedUserHandleMouseLeave}
    />
  );
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);