How to toggle checkbox on text click in Vue TreeView

21 Aug 202615 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.

<template>
    <div id="app">
        <div class="control_wrapper">
            <ejs-treeview id='treeview' ref="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";
    const treeview = ref(null);
    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 = treeview.value.ej2Instances;
        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>
<template>
    <div id="app">
        <div class="control_wrapper">
            <ejs-treeview id='treeview' ref="treeview" :fields="fields" :showCheckBox='true' :nodeClicked='nodeChecked'
                :keyPress='nodeChecked'></ejs-treeview>
        </div>
    </div>
</template>

<script>
    import { TreeViewComponent } from "@syncfusion/ej2-vue-navigations";
    import { ref } from 'vue';
    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 =this.$refs.treeview.ej2Instances;
                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>