User handle in EJ2 JavaScript Diagram control

4 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.

var nodes = [
  {
    id: 'node1',
    offsetX: 100,
    offsetY: 100,
    height: 100,
    width: 100,
    style: { fill: '#64A6', strokeColor: '#64Abbb' },
  },
];
var 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 ',
  },
];

var diagram = new ej.diagrams.Diagram(
  {
    width: '100%',
    height: '600px',
    nodes: nodes,
    selectedItems: {
      //Define user handles in selectedItems property
      userHandles: userHandles,
    },
  },

  '#element'
);
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Diagram</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-diagrams/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-navigations/styles/fabric.css" rel="stylesheet">
    
<script src="https://cdn.syncfusion.com/ej2/28.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="element"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

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.

var nodes = [
  {
    id: 'node1',
    offsetX: 100,
    offsetY: 100,
    height: 100,
    width: 100,
    style: { fill: '#64A6', strokeColor: '#64Abbb' },
  },
];
var 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 ',
  },
];

var diagram = new ej.diagrams.Diagram(
  {
    width: '100%',
    height: '600px',
    nodes: nodes,
    selectedItems: {
      //Define user handles in selectedItems property
      userHandles: userHandles,
    },
    onUserHandleMouseDown: function (args) {
      if (args.element) {
        //To clone the selected node
        diagram.copy();
        diagram.paste();
      }
    },
  },

  '#element'
);
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Diagram</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-diagrams/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-navigations/styles/fabric.css" rel="stylesheet">
    
<script src="https://cdn.syncfusion.com/ej2/28.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="element"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

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.

var nodes = [
  {
    id: 'node1',
    offsetX: 100,
    offsetY: 100,
    height: 100,
    width: 100,
    style: { fill: '#64A6', strokeColor: '#64Abbb' },
  },
];
var 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 ',
    //Alignment options
    offset: 1,
    side: 'Bottom',
    horizontalAlignment: 'Left',
    verticalAlignment: 'Bottom',
    margin: { left: 5, bottom: 10 },
  },
];

var diagram = new ej.diagrams.Diagram(
  {
    width: '100%',
    height: '600px',
    nodes: nodes,
    selectedItems: {
      //Define user handles in selectedItems property
      userHandles: userHandles,
    },
    onUserHandleMouseDown: function (args) {
      if (args.element) {
        //To clone the selected node
        diagram.copy();
        diagram.paste();
      }
    },
  },

  '#element'
);
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Diagram</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-diagrams/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-navigations/styles/fabric.css" rel="stylesheet">
    
<script src="https://cdn.syncfusion.com/ej2/28.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="element"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

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

Offset side Output
0 Left user handle for node
0 Right user handle for node
0 Top user handle for node
0 Bottom user handle for node
1 Left user handle for node
1 Right user handle for node
1 Top user handle for node
1 Bottom user handle for node

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.

var nodes = [
  {
    id: 'node1',
    offsetX: 300,
    offsetY: 300,
    height: 100,
    width: 100,
    style: { fill: '#64A6', strokeColor: '#64Abbb' },
  },
];
var 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 ',
    //Alignment options
    offset: 1,
    //Sets tooltip for user handle
    tooltip: { content: 'Clone Node' },
  },
];

var diagram = new ej.diagrams.Diagram(
  {
    width: '100%',
    height: '600px',
    nodes: nodes,
    selectedItems: {
      //Define user handles in selectedItems property
      userHandles: userHandles,
    },
    onUserHandleMouseDown: function (args) {
      if (args.element) {
        //To clone the selected node
        diagram.copy();
        diagram.paste();
      }
    },
  },

  '#element'
);
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Diagram</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-diagrams/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-navigations/styles/fabric.css" rel="stylesheet">
    
<script src="https://cdn.syncfusion.com/ej2/28.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="element"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

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

var nodes = [
  {
    id: 'node1',
    offsetX: 300,
    offsetY: 300,
    height: 100,
    width: 100,
    style: { fill: '#64A6', strokeColor: '#64Abbb' },
  },
];
var 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 ',
    offset: 1,
    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,
  },
];

var diagram = new ej.diagrams.Diagram(
  {
    width: '100%',
    height: '600px',
    nodes: nodes,
    selectedItems: {
      //Define user handles in selectedItems property
      userHandles: userHandles,
    },
    onUserHandleMouseDown: function (args) {
      if (args.element) {
        //To clone the selected node
        diagram.copy();
        diagram.paste();
      }
    },
  },

  '#element'
);
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Diagram</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-diagrams/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-navigations/styles/fabric.css" rel="stylesheet">
    
<script src="https://cdn.syncfusion.com/ej2/28.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="element"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

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.

var nodes = [
  {
    id: 'node1',
    offsetX: 300,
    offsetY: 300,
    height: 100,
    width: 100,
    style: { fill: '#64A6', strokeColor: '#64Abbb' },
  },
];
var connectors = [
  {
    id: 'connector1',
    type: 'Orthogonal',
    sourcePoint: { x: 100, y: 100 },
    targetPoint: { x: 300, y: 200 },
  },
];
var 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,
  },
];

var diagram = new ej.diagrams.Diagram(
  {
    width: '100%',
    height: '600px',
    nodes: nodes,
    connectors: connectors,
    selectedItems: {
      //Define user handles in selectedItems property
      userHandles: userHandles,
    },
    onUserHandleMouseDown: function (args) {
      switch (args.element.name) {
        // To clone the selected node
        case 'clone':
          diagram.copy();
          diagram.paste();
          break;
        case 'delete':
          diagram.remove();
          break;
        case 'star':
        case 'rectangle':
        case 'triangle':
          diagram.selectedItems.nodes[0].shape = {
            type: 'Basic',
            shape: args.element.tooltip.content,
          };
          diagram.dataBind();
          break;
        case 'changeConnectorType':
          diagram.selectedItems.connectors[0].type =
            diagram.selectedItems.connectors[0].type === 'Orthogonal'
              ? 'Straight'
              : diagram.selectedItems.connectors[0].type === 'Straight'
              ? 'Bezier'
              : 'Orthogonal';
          diagram.dataBind();
          break;
      }
    },
  },

  '#element'
);
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Diagram</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-diagrams/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-navigations/styles/fabric.css" rel="stylesheet">
    
<script src="https://cdn.syncfusion.com/ej2/28.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="element"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

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.

var nodes = [
  {
    id: 'node1',
    offsetX: 300,
    offsetY: 300,
    height: 100,
    width: 100,
    style: { fill: '#64A6', strokeColor: '#64Abbb' },
  },
];
var 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 ',
    offset: 1,
    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,
  },
];

var diagram = new ej.diagrams.Diagram(
  {
    width: '100%',
    height: '600px',
    nodes: nodes,
    selectedItems: {
      //Define user handles in selectedItems property
      userHandles: userHandles,
    },
    onUserHandleMouseDown: function (args) {
      if (args.element) {
        //To clone the selected node
        diagram.copy();
        diagram.paste();
      }
    },
    onUserHandleMouseEnter: function (args) {
      if (args.element) {
        args.element.pathColor = 'red';
        args.element.backgroundColor = 'pink';
      }
    },
    onUserHandleMouseUp: function (args) {
      //Customize
    },
    onUserHandleMouseLeave: function (args) {
      if (args.element) {
        args.element.pathColor = 'green';
        args.element.backgroundColor = 'yellow';
      }
    },
  },

  '#element'
);
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Diagram</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-diagrams/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-navigations/styles/fabric.css" rel="stylesheet">
    
<script src="https://cdn.syncfusion.com/ej2/28.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="element"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

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.

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

var nodes = [
  {
    id: 'node1',
    offsetX: 300,
    offsetY: 300,
    height: 100,
    width: 100,
    style: { fill: '#64A6', strokeColor: '#64Abbb' },
  },
];
var 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,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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',
  },
];

var diagram = new ej.diagrams.Diagram(
  {
    width: '100%',
    height: '600px',
    nodes: nodes,
    userHandleTemplate: '#userHandletemplate',
    selectedItems: {
      //Define user handles in selectedItems property
      userHandles: userHandles,
    },
  },

  '#element'
);
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Diagram</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-diagrams/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-navigations/styles/fabric.css" rel="stylesheet">
    
<script src="https://cdn.syncfusion.com/ej2/28.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="element"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

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:

var nodes = [
  {
    id: 'node1',
    offsetX: 300,
    offsetY: 300,
    height: 100,
    width: 100,
    style: { fill: '#64A6', strokeColor: '#64Abbb' },
    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,
      },
    ],
  },
];

var diagram = new ej.diagrams.Diagram(
  {
    width: '100%',
    height: '600px',
    nodes: nodes,
    fixedUserHandleClick: function (args) {
      let node = args.element;
      node.style.fill = node.style.fill === '#64A6' ? '#64Abbb' : '#64A6';
      diagram.dataBind();
    },
  },

  '#element'
);
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Diagram</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-diagrams/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-navigations/styles/fabric.css" rel="stylesheet">
    
<script src="https://cdn.syncfusion.com/ej2/28.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="element"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

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.

var nodes = [
  {
    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 },
      },
    ],
  },
];
var 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,
      },
    ],
  },
];

var diagram = new ej.diagrams.Diagram(
  {
    width: '100%',
    height: '600px',
    nodes: nodes,
    connectors: connectors,
    onFixedUserHandleMouseDown: function (args) {
      let node = args.element.parentObj;
      node.style.strokeColor =
        node.style.strokeColor === '#64A6' ? '#64Abbb' : '#64A6';
      diagram.dataBind();
    },
  },

  '#element'
);
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Diagram</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-diagrams/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-navigations/styles/fabric.css" rel="stylesheet">
    
<script src="https://cdn.syncfusion.com/ej2/28.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="element"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

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

Offset Margin Output
(0,0) Right = 20 fixed user handle for node
(0.5,0) Bottom = 20 fixed user handle for node
(1,0) Left = 20 fixed user handle for node
(0,0.5) Right = 20 fixed user handle for node
(0,1) Left = 20 fixed user handle for node
(0,1) Right = 20 fixed user handle for node
(0.5,1) Top = 20 fixed user handle for node
(1,1) Left = 20 fixed user handle for node

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 fixed user handle align before offset 0
0.5 Before fixed user handle align before offset 0.5
1 Before fixed user handle align before offset 1
0 Center fixed user handle align center offset 0
0.5 Center fixed user handle align center offset 0.5
1 Center fixed user handle align center offset 1
0 After fixed user handle align after offset 0
0.5 After fixed user handle align after offset 0.5
1 After fixed user handle for align after offset 1
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.

Displacment Alignment Output
x=10 Before fixed user handle for node
x=10 After fixed user handle for node
y=10 Before fixed user handle for node
y=10 After fixed user handle for node

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.

var connector = {
            id: 'connector1',
            type: 'Orthogonal',
            sourcePoint: { x: 300, y: 100 },
            targetPoint: { x: 400, y: 200 }, 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' }]
        };
var diagram = new ej.diagrams.Diagram({
    width: '100%', height: '600px',  connectors: [connector]
    }, '#element');
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Diagram</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-diagrams/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-navigations/styles/fabric.css" rel="stylesheet">
    
<script src="https://cdn.syncfusion.com/ej2/28.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="element"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

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.

var nodes = [
  {
    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' },
      },
    ],
  },
];
var 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' },
      },
    ],
  },
];

var diagram = new ej.diagrams.Diagram(
  {
    width: '100%',
    height: '600px',
    nodes: nodes,
    connectors: connectors,
    onFixedUserHandleMouseDown: function (args) {
      let node = args.element.parentObj;
      node.style.strokeColor =
        node.style.strokeColor === '#64A6' ? '#64Abbb' : '#64A6';
      diagram.dataBind();
    },
  },

  '#element'
);
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Diagram</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-diagrams/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-navigations/styles/fabric.css" rel="stylesheet">
    
<script src="https://cdn.syncfusion.com/ej2/28.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="element"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

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.

var nodes = [
  {
    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,
      },
    ],
  },
];
var 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: 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,
      },
    ],
  },
];

var diagram = new ej.diagrams.Diagram(
  {
    width: '100%',
    height: '600px',
    nodes: nodes,
    connectors: connectors,
    onFixedUserHandleMouseDown: function (args) {
      let node = args.element.parentObj;
      node.style.strokeColor =
        node.style.strokeColor === '#64A6' ? '#64Abbb' : '#64A6';
      diagram.dataBind();
    },
  },

  '#element'
);
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Diagram</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-diagrams/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-navigations/styles/fabric.css" rel="stylesheet">
    
<script src="https://cdn.syncfusion.com/ej2/28.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="element"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

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.

var nodes = [
  {
      id: "node1",
      offsetX: 250,
      offsetY: 250,
      width: 100,
      height: 100,
      style: {
          fill: '#6BA5D7',
          strokeColor: 'white'
      },
      fixedUserHandles: [{ offset: { x: 0, y: 0 }, margin: { right: 20 }, width: 50, height: 20, id: 'usercon1' }]
  }
];
var connectors = [
  {
      id: "connector1",
      style: {
          strokeColor: '#6BA5D7',
          fill: '#6BA5D7',
          strokeWidth: 2
      },
      targetDecorator: {
          style: {
              fill: '#6BA5D7',
              strokeColor: '#6BA5D7'
          }
      },
      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 } }]
  }
];

var diagram = new ej.diagrams.Diagram(
  {
    width: '100%',
    height: '600px',
    nodes: nodes,
    connectors: connectors,
    fixedUserHandleTemplate: "#fixeduserhandletemplate"
  },

  '#element'
);

document.getElementById("colorPicker").onchange = function () {
  var currentColor = document.getElementById('colorPicker').value;
  diagram.nodes[0].style.fill = currentColor;
};
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Diagram</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="index.css" rel="stylesheet">
    
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-diagrams/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/28.1.33/ej2-navigations/styles/fabric.css" rel="stylesheet">
    
<script src="https://cdn.syncfusion.com/ej2/28.1.33/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <script id="fixeduserhandletemplate" type="text/x-template">
        ${if(id=='usercon1')}
        <div style="width:100%;height:100%">
            <input id="colorPicker" type="color"  value="#008000"
            style="width:${width}"/>
        </div>
        ${else if(id=='usercon2')}
        <div style="width:100%;height:100%">
            <input type="button" value="FixedUserHandleTemplate" 
        style="width:${width};color:red; "/>
        </div>
        ${/if}
        
    </script>
    <div id="container">
        <div id="element"></div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

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.

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

var nodes = [
  {
    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,
      },
    ],
  },
];
var 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: 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,
      },
    ],
  },
];

var diagram = new ej.diagrams.Diagram(
  {
    width: '100%',
    height: '600px',
    nodes: nodes,
    connectors: connectors,
    onFixedUserHandleMouseDown: function (args) {
      let node = args.element.parentObj;
      node.style.strokeColor =
        node.style.strokeColor === '#64A6' ? '#64Abbb' : '#64A6';
      diagram.dataBind();
    },
    onFixedUserHandleMouseEnter: function (args) {
      if (args.element) {
        args.element.fill = 'red';
        args.element.handleStrokeColor = 'pink';
      }
    },
    onFixedUserHandleMouseUp: function (args) {
      //Customize
    },
    onFixedUserHandleMouseLeave: function (args) {
      if (args.element) {
        args.element.fill = 'yellow';
        args.element.handleStrokeColor = 'green';
      }
    },
  },

  '#element'
);
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        <div id="element"></div>
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}   
      </script>
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