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Indent and Outdent in JavaScript (ES5) TreeGrid control

12 Aug 2022 / 1 minute to read

The Indent and Outdent feature will help to change the hierarchy level of rows in tree grid. The indent action moves the selected row as the last child of its previous row, whereas the outdent action moves the selected row as a sibling to its parent row.

To use the indent and outdent feature, inject the RowDD module in the Tree Grid. The tree grid toolbar has the built-in items to execute indent and outdent actions. Define this by using the toolbar property.

Source
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index.js
index.html
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ej.treegrid.TreeGrid.Inject(ej.treegrid.Toolbar, ej.treegrid.RowDD);

var treegrid = new ej.treegrid.TreeGrid({
  dataSource: sampleData,
  childMapping: 'subtasks',
  toolbar: ['Indent', 'Outdent'],
  selectedRowIndex: 2,
  treeColumnIndex: 1,
  columns: [
      { field: 'taskID', headerText: 'Task ID', isPrimaryKey: true, width: 90, textAlign: 'Right'},
      { field: 'taskName', headerText: 'Task Name', width: 180 },
      { field: 'priority', headerText: 'Priority', width: 90 },
      { field: 'duration', headerText: 'Duration', width: 80, textAlign: 'Right' }
  ],
  height: 270
});
treegrid.appendTo('#TreeGrid');
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<!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://cdn.syncfusion.com/ej2/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
</head>
<body>
    
    <div id="container">
        <div id="TreeGrid"></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>

To change hierarchy level of the record programmatically, indent and outdent methods can be used by passing the record as a parameter.