Your search did not match any results.
Tree List

Focused Row

The TreeList component can highlight the focused row. To enable this feature, set the focusedRowEnabled property to true.

To focus a row programmatically, specify the focusedRowKey property. The TreeList automatically scrolls to the focused row. You can set the autoNavigateToFocusedRow property to false to deactivate this behavior. In the UI, users can click a row to focus it. The focused row is saved in the TreeList's state.

You can use the onFocusedRowChanging and onFocusedRowChanged properties to specify a custom function that is executed before or after a row is focused.

In this demo, the row with the 4 key is focused initially. You can specify the focusedRowKey property via the input field below the TreeList. The onFocusedRowChanged function is used to display additional information below the component when the focused row changes.

Backend API
Copy to CodeSandBox
Apply
Reset
<template> <div> <DxTreeList id="treeList" :data-source="dataSource" :word-wrap-enabled="true" :show-borders="true" :focused-row-enabled="true" v-model:focused-row-key="focusedRowKey" parent-id-expr="Task_Parent_ID" has-items-expr="Has_Items" @focused-row-changed="onFocusedRowChanged" > <DxColumn data-field="Task_ID" width="100" alignment="left" /> <DxColumn :min-width="120" data-field="Task_Assigned_Employee_ID" caption="Assigned" > <DxLookup :data-source="taskEmployees" value-expr="ID" display-expr="Name" /> </DxColumn> <DxColumn data-field="Task_Status" caption="Status" width="160" /> <DxColumn data-field="Task_Start_Date" caption="Start Data" data-type="date" width="160" /> <DxColumn data-field="Task_Due_Date" caption="Due Data" data-type="date" width="160" /> </DxTreeList> <div class="task-info"> <div class="info"> <div class="task-subject">{{ taskSubject }}</div> <span class="task-assigned">{{ taskAssigned }}</span> <span class="start-date">{{ startDate }}</span> </div> <div class="progress"> <span class="task-status">{{ taskStatus }}</span> <span class="task-progress">{{ taskProgress }}</span> </div> </div> <div class="options"> <div class="caption">Options</div> <div class="option"> <span>Focused row key </span> <DxNumberBox id="taskId" :min="1" :max="182" :step="0" v-model:value="focusedRowKey" /> </div> </div> </div> </template> <script> import { DxTreeList, DxColumn, DxLookup } from 'devextreme-vue/tree-list'; import DxNumberBox from 'devextreme-vue/number-box'; import * as AspNetData from 'devextreme-aspnet-data-nojquery'; const url = 'https://js.devexpress.com/Demos/Mvc/api/TreeListTasks'; export default { components: { DxTreeList, DxColumn, DxLookup, DxNumberBox }, data() { return { taskSubject: '', taskAssigned: '', startDate: '', taskStatus: '', taskProgress: '', dataSource: AspNetData.createStore({ key: 'Task_ID', loadUrl: `${url }/Tasks`, onBeforeSend: function(_, ajaxOptions) { ajaxOptions.xhrFields = { withCredentials: true }; } }), taskEmployees: AspNetData.createStore({ key: 'ID', loadMode: 'raw', loadUrl: `${url}/TaskEmployees` }), focusedRowKey: 4 }; }, methods: { onFocusedRowChanged: function(e) { var rowData = e.row && e.row.data, cellValue, assigned; if (rowData) { cellValue = e.component.cellValue(e.row.rowIndex, 'Assigned'); this.taskEmployees.byKey(cellValue).done((item) => { assigned = item.Name; }); this.taskSubject = rowData.Task_Subject; this.taskAssigned = assigned; this.startDate = new Date(rowData.Task_Start_Date).toLocaleDateString(); this.taskStatus = rowData.Task_Status; this.taskProgress = rowData.Task_Completion ? `${rowData.Task_Completion }%` : ''; } } } }; </script>
import { createApp } from 'vue'; import App from './App.vue'; createApp(App).mount('#app');
<!DOCTYPE html> <html> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.5/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.5/css/dx.light.css" /> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script> <script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script> <script type="text/javascript" src="config.js"></script> <script type="text/javascript"> System.import('./index.js'); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"/> </div> </body> </html>
#treeList { max-height: 400px; } .task-info { font-family: Segoe UI; min-height: 100px; display: flex; flex-wrap: nowrap; border: 2px solid rgba(0, 0, 0, 0.1); padding: 16px; box-sizing: border-box; align-items: center; justify-content: space-between; } .info { display: flex; flex-direction: column; } .task-subject { line-height: 29px; font-size: 18px; font-weight: bold; } .progress { display: flex; flex-direction: column; white-space: pre; min-width: 105px; } .task-progress { line-height: 42px; font-size: 40px; font-weight: bold; } .options { margin-top: 20px; padding: 20px; background-color: rgba(191, 191, 191, 0.15); position: relative; } .caption { font-size: 18px; font-weight: 500; } .option { margin-top: 10px; } .option > .dx-numberbox { width: 200px; display: inline-block; vertical-align: middle; } .option > span { margin-right: 10px; }
window.config = { transpiler: 'plugin-babel', meta: { '*.vue': { loader: 'vue-loader' }, 'devextreme/localization.js': { "esModule": true }, 'devextreme-aspnet-data-nojquery': { 'esModule': true }, }, paths: { 'npm:': 'https://unpkg.com/' }, map: { 'vue': 'npm:vue@3.0.0/dist/vue.esm-browser.js', 'vue-loader': 'npm:dx-systemjs-vue-browser@1.0.15/index.js', 'devextreme-aspnet-data-nojquery': 'npm:devextreme-aspnet-data-nojquery@2.8.4/index.js', 'mitt': 'npm:mitt/dist/mitt.umd.js', 'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js', 'luxon': 'npm:luxon@1.28.0/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign@1.1.0', 'devextreme': 'npm:devextreme@21.1.5/cjs', 'devextreme-vue': 'npm:devextreme-vue@21.1.5', 'jszip': 'npm:jszip@3.7.0/dist/jszip.min.js', 'devextreme-quill': 'npm:devextreme-quill@1.3.1/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.1.25/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@3.0.4/dist/dx-gantt.js', '@devextreme/vdom': 'npm:@devextreme/vdom@1.2.2', 'inferno': 'npm:inferno@7.4.8/dist/inferno.min.js', 'inferno-compat': 'npm:inferno-compat@7.4.8/dist/inferno-compat.min.js', 'inferno-create-element': 'npm:inferno-create-element@7.4.8/dist/inferno-create-element.min.js', 'inferno-dom': 'npm:inferno-dom@1.0.7/dist/inferno-dom.min.js', 'inferno-hydrate': 'npm:inferno-hydrate@7.4.8/dist/inferno-hydrate.min.js', 'inferno-clone-vnode': 'npm:inferno-clone-vnode@7.4.8/dist/inferno-clone-vnode.min.js', 'inferno-create-class': 'npm:inferno-create-class@7.4.8/dist/inferno-create-class.min.js', 'inferno-extras': 'npm:inferno-extras@7.4.8/dist/inferno-extras.min.js', 'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js' }, packages: { 'devextreme-vue': { main: 'index.js' }, 'devextreme': { defaultExtension: 'js' }, '@devextreme/vdom': { defaultExtension: 'js' }, 'devextreme/events/utils': { main: 'index' }, 'devextreme/events': { main: 'index' }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js' } }, packageConfigPaths: [ "npm:@devextreme/*/package.json", ], babelOptions: { sourceMaps: false, stage0: true } }; System.config(window.config);