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.
ej.treegrid.TreeGrid.Inject(ej.treegrid.Edit, ej.treegrid.Toolbar);
var treegrid = new ej.treegrid.TreeGrid({
dataSource: sampleData,
childMapping: 'subtasks',
treeColumnIndex: 1,
height: 220,
toolbar: ['Add', 'Edit', 'Delete', 'Update', 'Cancel'],
editSettings: { allowAdding:true, allowEditing: true, allowDeleting:true, mode: 'Row' },
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');
var button = new ej.buttons.Button({}, '#primarybtn');
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://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">
<button id="primarybtn">Enable/Disable TreeGrid</button>
<div id="TreeGridParent">
<div id="TreeGrid"></div>
</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>