Enable/Disable Tree Grid and its actions in JavaScript TreeGrid control

15 Oct 2021 / 2 minutes to read

You can enable/disable the Tree Grid and its actions by applying/removing corresponding CSS styles.

To enable/disable the Tree Grid and its actions, follow the given steps:

Step 1:

Create CSS class with custom style to override the default style of Tree Grid.

    .disabletreegrid {
        pointer-events: none;
        opacity: 0.4;
    }
    .wrapper {
        cursor: not-allowed;
    }

Step 2:

Add/Remove the CSS class to the Tree Grid in the click event handler of Button.

    document.getElementById('primarybtn').addEventListener('click', () => {
        if (treegrid.element.classList.contains('disabletreegrid')) {
            treegrid.element.classList.remove('disabletreegrid');
            document.getElementById("TreeGridParent").classList.remove('wrapper');
        }
        else {
            treegrid.element.classList.add('disabletreegrid');
            document.getElementById("TreeGridParent").classList.add('wrapper');
        }
    });

In the below demo, the button click will enable/disable the Tree Grid and its actions.

Source

Preview

index.ts

index.css

index.html

import { TreeGrid, Edit, Toolbar } from '@syncfusion/ej2-treegrid';
import { Button } from '@syncfusion/ej2-buttons';
import { sampleData } from './datasource.ts';

TreeGrid.Inject(Edit,Toolbar);
let button: Button = new Button();
button.appendTo('#primarybtn');

let treegrid: TreeGrid = new TreeGrid({
    dataSource: sampleData,
    childMapping: 'subtasks',
    treeColumnIndex: 1,
    height: 220,
    toolbar: ['Add', 'Edit', 'Delete', 'Update', 'Cancel'],
    editSettings: { allowAdding:true, allowEditing: true, allowDeleting:true },
     columns: [
     { field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, width: 90, textAlign: 'Right' },
     { field: 'taskName', headerText: 'Task Name', width: 180, textAlign: 'Left' },
     { field: 'startDate', headerText: 'Start Date', width: 90, textAlign: 'Right', type: 'date', format: 'yMd'},
     { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' }
    ],
});
treegrid.appendTo('#TreeGrid');

document.getElementById('primarybtn').addEventListener('click', () => {

    if (treegrid.element.classList.contains('disabletreegrid')) {
        treegrid.element.classList.remove('disabletreegrid');
        document.getElementById("TreeGridParent").classList.remove('wrapper');
    }
    else {
        treegrid.element.classList.add('disabletreegrid');
        document.getElementById("TreeGridParent").classList.add('wrapper');
    }
});

#container {
    visibility: hidden;
}

#loader {
  color: #008cff;
  font-family: 'Helvetica Neue','calibiri';
  font-size: 14px;
  height: 40px;
  left: 45%;
  position: absolute;
  top: 45%;
  width: 30%;
}

.disabletreegrid {
  pointer-events: none;
  opacity: 0.4;
}
.wrapper {
  cursor: not-allowed;
}

<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Grid</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript Grid Control" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-grids/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-treegrid/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-navigations/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-lists/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet" />
    
    
    
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    
    
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>
<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <button id="primarybtn">Enable/Disable TreeGrid</button>
        <div id="TreeGridParent">
        <div id='TreeGrid'></div>
        </div>        
    </div>
</body>
</html>

You can refer to our JavaScript Tree Grid feature tour page for its groundbreaking feature representations. You can also explore our JavaScript Tree Grid example JavaScript Tree Grid example to knows how to present and manipulate data.