Check uncheck the checkbox on clicking the tree node text in Vue Treeview component

23 Dec 202413 minutes to read

You can toggle the checkboxes in the TreeView by clicking on the tree node text. This can be achieved using the nodeClicked event of the TreeView.

Composition API (~/src/App.vue)

<template>
    <div id="app">
        <div class="control_wrapper">
            <ejs-treeview id='treeview' :fields="fields" :showCheckBox='true' :nodeClicked='nodeChecked'
                :keyPress='nodeChecked'></ejs-treeview>
        </div>
    </div>
</template>
<script setup>

import { TreeViewComponent as EjsTreeview } from "@syncfusion/ej2-vue-navigations";

var dataSource = [
    { id: 1, name: 'Australia', hasChild: true, expanded: true },
    { id: 2, pid: 1, name: 'New South Wales', isChecked: true },
    { id: 3, pid: 1, name: 'Victoria' },
    { id: 4, pid: 1, name: 'South Australia' },
    { id: 6, pid: 1, name: 'Western Australia', isChecked: true },
    { 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: 'China', hasChild: true },
    { id: 12, pid: 11, name: 'Guangzhou' },
    { id: 13, pid: 11, name: 'Shanghai' },
    { id: 14, pid: 11, name: 'Beijing' },
    { id: 15, pid: 11, name: 'Shantou' },
    { id: 16, name: 'France', hasChild: true },
    { id: 17, pid: 16, name: 'Pays de la Loire' },
    { id: 18, pid: 16, name: 'Aquitaine' },
    { id: 19, pid: 16, name: 'Brittany' },
    { id: 20, pid: 16, name: 'Lorraine' },
    { id: 21, name: 'India', hasChild: true },
    { id: 22, pid: 21, name: 'Assam' },
    { id: 23, pid: 21, name: 'Bihar' },
    { id: 24, pid: 21, name: 'Tamil Nadu' },
    { id: 25, pid: 21, name: 'Punjab' }
];

const fields = { dataSource: dataSource, id: 'id', parentID: 'pid', text: 'name', hasChildren: 'hasChild' };

const nodeChecked = (args) => {
    var treeObj = document.getElementById('treeview').ej2_instances[0];
    var checkedNode = [args.node];
    if (args.event.target.classList.contains('e-fullrow') || args.event.key == "Enter") {
        var getNodeDetails = treeObj.getNode(args.node);
        if (getNodeDetails.isChecked == 'true') {
            treeObj.uncheckAll(checkedNode);
        } else {
            treeObj.checkAll(checkedNode);
        }
    }
};

</script>
<style>
@import "../node_modules/@syncfusion/ej2-base/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-navigations/styles/material.css";
@import "../node_modules/@syncfusion/ej2-buttons/styles/material.css";

.control_wrapper {
    display: block;
    max-width: 350px;
    max-height: 350px;
    margin: auto;
    overflow: auto;
    border: 1px solid #dddddd;
    border-radius: 3px;
}
</style>

Options API (~/src/App.vue)

<template>
    <div id="app">
        <div class="control_wrapper">
            <ejs-treeview id='treeview' :fields="fields" :showCheckBox='true' :nodeClicked='nodeChecked'
                :keyPress='nodeChecked'></ejs-treeview>
        </div>
    </div>
</template>
<script>

import { TreeViewComponent } from "@syncfusion/ej2-vue-navigations";

export default {
    name: "App",
    components: {
        "ejs-treeview": TreeViewComponent
    },
    data() {
        var dataSource = [
            { id: 1, name: 'Australia', hasChild: true, expanded: true },
            { id: 2, pid: 1, name: 'New South Wales', isChecked: true },
            { id: 3, pid: 1, name: 'Victoria' },
            { id: 4, pid: 1, name: 'South Australia' },
            { id: 6, pid: 1, name: 'Western Australia', isChecked: true },
            { 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: 'China', hasChild: true },
            { id: 12, pid: 11, name: 'Guangzhou' },
            { id: 13, pid: 11, name: 'Shanghai' },
            { id: 14, pid: 11, name: 'Beijing' },
            { id: 15, pid: 11, name: 'Shantou' },
            { id: 16, name: 'France', hasChild: true },
            { id: 17, pid: 16, name: 'Pays de la Loire' },
            { id: 18, pid: 16, name: 'Aquitaine' },
            { id: 19, pid: 16, name: 'Brittany' },
            { id: 20, pid: 16, name: 'Lorraine' },
            { id: 21, name: 'India', hasChild: true },
            { id: 22, pid: 21, name: 'Assam' },
            { id: 23, pid: 21, name: 'Bihar' },
            { id: 24, pid: 21, name: 'Tamil Nadu' },
            { id: 25, pid: 21, name: 'Punjab' }
        ];
        return {
            fields: { dataSource: dataSource, id: 'id', parentID: 'pid', text: 'name', hasChildren: 'hasChild' },
        }
    },
    methods: {
        nodeChecked: function (args) {
            var treeObj = document.getElementById('treeview').ej2_instances[0];
            var checkedNode = [args.node];
            if (args.event.target.classList.contains('e-fullrow') || args.event.key == "Enter") {
                var getNodeDetails = treeObj.getNode(args.node);
                if (getNodeDetails.isChecked == 'true') {
                    treeObj.uncheckAll(checkedNode);
                } else {
                    treeObj.checkAll(checkedNode);
                }
            }
        }
    }
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-base/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-navigations/styles/material.css";
@import "../node_modules/@syncfusion/ej2-buttons/styles/material.css";

.control_wrapper {
    display: block;
    max-width: 350px;
    max-height: 350px;
    margin: auto;
    overflow: auto;
    border: 1px solid #dddddd;
    border-radius: 3px;
}
</style>