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.
Feel free to share demo-related thoughts here.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
Thank you!
We appreciate your feedback.
We appreciate your feedback.
<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/21.1.3/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.3/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@1.27.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@21.1.3/cjs',
'devextreme-vue': 'npm:devextreme-vue@21.1.3',
'jszip': 'npm:jszip@3.6.0/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@1.0.0/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.1.15/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@2.1.31/dist/dx-gantt.js',
'@devextreme/vdom': 'npm:@devextreme/vdom@1.2.1',
'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);