Focused Row
Documentation
This example demonstrates a TreeList component that supports focused rows. The focusedRowKey property specifies the focused row. The onFocusedRowChanged callback function can be used to display additional information below the TreeList when the focused row changes. The focusedRowEnabled property enables row focusing.
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<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/20.2.6/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.6/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;
}
System.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@2.7.1/index.js',
'mitt': 'npm:mitt/dist/mitt.umd.js',
'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.26.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@20.2.6',
'devextreme-vue': 'npm:devextreme-vue@20.2.6',
'jszip': 'npm:jszip@3.6.0/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@0.10.3/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.0.18/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@2.0.24/dist/dx-gantt.js',
'preact': 'npm:preact@10.5.13/dist/preact.js',
'preact/hooks': 'npm:preact@10.5.13/hooks/dist/hooks.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/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js'
}
},
babelOptions: {
sourceMaps: false,
stage0: true
}
});