Disable checkbox of the tree node in React Treeview component

30 Jan 202310 minutes to read

You can disable the check box alone in TreeView instead of disabling the whole node. You need to include the e-checkbox-disabled class into the check box element using the drawNode event. Please refer to the following sample to disable the check box of the tree nodes.

index.jsx

import * as ReactDOM from 'react-dom';
import * as React from 'react';
import { TreeViewComponent } from '@syncfusion/ej2-react-navigations';
import { enableRipple } from '@syncfusion/ej2-base';
enableRipple(true);
function App() {
    // Data source for TreeView component
    let Countries = [
        { id: 1, name: 'India', hasChild: true, expanded: true },
        { id: 2, pid: 1, name: 'Assam' },
        { id: 3, pid: 1, name: 'Bihar' },
        { id: 4, pid: 1, name: 'Tamil Nadu' },
        { id: 6, pid: 1, name: 'Punjab' },
        { id: 7, name: 'Brazil', hasChild: true },
        { id: 8, pid: 7, name: 'Paraná' },
        { id: 9, pid: 7, name: 'Ceará' },
        { id: 10, pid: 7, name: 'Acre' },
        { id: 11, name: 'France', hasChild: true },
        { id: 12, pid: 11, name: 'Pays de la Loire' },
        { id: 13, pid: 11, name: 'Aquitaine' },
        { id: 14, pid: 11, name: 'Brittany' },
        { id: 15, pid: 11, name: 'Lorraine' },
        { id: 16, name: 'Australia', hasChild: true },
        { id: 17, pid: 16, name: 'New South Wales' },
        { id: 18, pid: 16, name: 'Victoria' },
        { id: 19, pid: 16, name: 'South Australia' },
        { id: 20, pid: 16, name: 'Western Australia' },
        { id: 21, name: 'China', hasChild: true },
        { id: 22, pid: 21, name: 'Guangzhou' },
        { id: 23, pid: 21, name: 'Shanghai' },
        { id: 24, pid: 21, name: 'Beijing' },
        { id: 25, pid: 21, name: 'Shantou' }
    ];
    let field = { dataSource: Countries, id: 'id', text: 'name', parentID: 'pid', hasChildren: 'hasChild' };
    let showCheckBox = true;
    function drawNode(args) {
        let ele = args.node.querySelector('.e-checkbox-wrapper');
        ele.classList.add('e-checkbox-disabled');
    }
    return (<div className='control-pane'>
          <div className='control-section'>
            <div className='control_wrapper'>
              {/* Render TreeView */}
              <TreeViewComponent fields={field} showCheckBox={showCheckBox} drawNode={drawNode.bind(this)}/>
            </div>
          </div>
        </div>);
}
export default App;
ReactDOM.render(<App />, document.getElementById('sample'));

index.tsx

import * as ReactDOM from 'react-dom';
import * as React from 'react';
import {TreeViewComponent, DrawNodeEventArgs} from '@syncfusion/ej2-react-navigations';
import {enableRipple} from '@syncfusion/ej2-base';
enableRipple(true);

function App() {

   // Data source for TreeView component
  let Countries: { [key: string]: Object }[] = [
    { id: 1, name: 'India', hasChild: true, expanded: true },
    { id: 2, pid: 1, name: 'Assam' },
    { id: 3, pid: 1, name: 'Bihar' },
    { id: 4, pid: 1, name: 'Tamil Nadu' },
    { id: 6, pid: 1, name: 'Punjab' },
    { id: 7, name: 'Brazil', hasChild: true },
    { id: 8, pid: 7, name: 'Paraná' },
    { id: 9, pid: 7, name: 'Ceará' },
    { id: 10, pid: 7, name: 'Acre' },
    { id: 11, name: 'France', hasChild: true },
    { id: 12, pid: 11, name: 'Pays de la Loire' },
    { id: 13, pid: 11, name: 'Aquitaine' },
    { id: 14, pid: 11, name: 'Brittany' },
    { id: 15, pid: 11, name: 'Lorraine' },
    { id: 16, name: 'Australia', hasChild: true },
    { id: 17, pid: 16, name: 'New South Wales' },
    { id: 18, pid: 16, name: 'Victoria' },
    { id: 19, pid: 16, name: 'South Australia' },
    { id: 20, pid: 16, name: 'Western Australia' },
    { id: 21, name: 'China', hasChild: true },
    { id: 22, pid: 21, name: 'Guangzhou' },
    { id: 23, pid: 21, name: 'Shanghai' },
    { id: 24, pid: 21, name: 'Beijing' },
    { id: 25, pid: 21, name: 'Shantou' }
   ]

    let field:Object ={  dataSource: Countries, id: 'id', text: 'name', parentID: 'pid', hasChildren: 'hasChild' };
    let showCheckBox: boolean=true;

    function drawNode(args: DrawNodeEventArgs): void {
      let ele: HTMLElement = args.node.querySelector('.e-checkbox-wrapper');
      ele.classList.add('e-checkbox-disabled');
    }

      return (
        <div className = 'control-pane'>
          <div className='control-section'>
            <div className='control_wrapper'>
              {/* Render TreeView */}
              <TreeViewComponent fields={field} showCheckBox={showCheckBox} drawNode={drawNode.bind(this)} />
            </div>
          </div>
        </div>
      )
}
export default App;
ReactDOM.render(<App />, document.getElementById('sample'));