The dual list contains two ListView. This allows you to move list items from one list to another using the client-side events. This section explains how to integrate the ListView component to achieve dual list.
Here, two ListView components have been used to display the list items. An ej2-button is used to transfer data between the ListView, and a textbox is used to achieve the UI of filtering support.
The dual list supports:
In the ListView component, sorting is enabled using the sortOrder property, and the select event is triggered while selecting an item. Here, the select event is triggered to enable and disable button states.
concat
with the second ListView. This button is enabled only when the data source
of the first ListView is not empty.dataManager
has been
used to fetch data from the data source and display in ListView.import { Component, ViewChild } from "@angular/core";
import { enableRipple } from "@syncfusion/ej2-base";
import { DataManager, Query, ODataV4Adaptor } from "@syncfusion/ej2-data";
import { ListViewComponent } from "@syncfusion/ej2-angular-lists";
import { ButtonComponent } from "@syncfusion/ej2-angular-buttons"
enableRipple(true);
@Component({
selector: 'my-app',
template: `<div id="text1">
<input #textbox class="e-input" type="text" id="firstInput" placeholder="Filter" title="Type in a name" (keyup)="onFirstKeyUp($event)" />
</div>
<ejs-listview #list1 id='list-1' [dataSource]='firstListData' [fields]='fields' [sortOrder]='Ascending' (select)="onFirstListSelect()"></ejs-listview>
<div id="btn">
<button ejs-button #btn1 id="firstBtn" (click)="firstbtnclick()"> >> </button>
<button ejs-button #btn2 id="secondBtn" [disabled]=true (click)="secondbtnclick()"> > </button>
<button ejs-button #btn3 id="thirdBtn" [disabled]=true (click)="thirdbtnclick()"> < </button>
<button ejs-button #btn4 id="fourthBtn" (click)="fourthbtnclick()"> << </button>
</div>
<div id="text2">
<input #text class="e-input" type="text" id="secondInput" placeholder="Filter" title="Type in a name" (keyup)="onSecondKeyUp($event)" />
</div>
<ejs-listview #list2 id='list-2' [dataSource]='secondListData' [fields]='fields' [sortOrder]='Ascending' (select)="onSecondListSelect()"></ejs-listview>
`,
})
export class AppComponent {
public fields: Object;
public firstListData:any; secondListData: any;
constructor(){
this.firstListData = [
{ text: "Hennessey Venom", id: "list-01" },
{ text: "Bugatti Chiron", id: "list-02" },
{ text: "Bugatti Veyron Super Sport", id: "list-03" },
{ text: "SSC Ultimate Aero", id: "list-04" },
{ text: "Koenigsegg CCR", id: "list-05" },
{ text: "McLaren F1", id: "list-06" }
];
this.secondListData = [
{ text: 'Aston Martin One- 77', id: 'list-07' },
{ text: 'Jaguar XJ220', id: 'list-08' },
{ text: 'McLaren P1', id: 'list-09' },
{ text: 'Ferrari LaFerrari', id: 'list-10' },
];
this.fields = { text: "text", id: "id" };
}
@ViewChild('list1')firstListObj: ListViewComponent;
@ViewChild('list2')secondListObj: ListViewComponent;
@ViewChild('btn1')firstBtnObj: ButtonComponent;
@ViewChild('btn2')secondBtnObj: ButtonComponent;
@ViewChild('btn3')thirdBtnObj: ButtonComponent;
@ViewChild('btn4')fourthBtnObj: ButtonComponent;
@ViewChild('textbox')textboxEle: any;
@ViewChild('text')textEle: any;
ngAfterViewInit(){
this.firstListData = this.firstListObj.dataSource.slice();
this.secondListData = this.secondListObj.dataSource.slice();
}
//Here, all list items are moved to the second list on clicking move all button
firstbtnclick() {
this.secondListObj.dataSource = Array.prototype.concat.call(this.firstListObj.dataSource, this.secondListObj.dataSource);
this.updateFirstListData();
this.firstListObj.removeMultipleItems(this.firstListObj.liCollection);
this.firstListData = this.firstListData.concat(this.firstListObj.dataSource);
this.secondListData = this.secondListObj.dataSource.slice();
this.firstBtnObj.disabled = true;
this.onFirstKeyUp();
this.setButtonState();
}
//Here, the selected list items are moved to the second list on clicking move button
secondbtnclick() {
let e = this.firstListObj.getSelectedItems();
this.secondListObj.dataSource = Array.prototype.concat.call(this.secondListObj.dataSource, e.data);
this.firstListObj.removeItem(e.item);
this.firstListData = this.firstListObj.dataSource;
this.secondListData = this.secondListObj.dataSource.slice();
this.onFirstKeyUp();
this.secondBtnObj.disabled = true;
this.setButtonState();
}
//Here, the selected list items are moved to the first list on clicking move button
thirdbtnclick () {
let e = this.secondListObj.getSelectedItems();
this.firstListObj.dataSource = Array.prototype.concat.call(this.firstListObj.dataSource, e.data);
this.secondListObj.removeItem(e.item);
this.secondListData = this.secondListObj.dataSource;
this.firstListData = this.firstListObj.dataSource.slice();
this.onSecondKeyUp();
this.thirdBtnObj.disabled = true;
this.setButtonState();
}
//Here, all list items are moved to the first list on clicking move all button
fourthbtnclick() {
this.firstListObj.dataSource = Array.prototype.concat.call(this.firstListObj.dataSource, this.secondListObj.dataSource);
this.updateSecondListData();
this.secondListObj.removeMultipleItems(this.secondListObj.liCollection);
this.secondListData = this.secondListData.concat(this.secondListObj.dataSource);
this.firstListData = this.firstListObj.dataSource.slice();
this.onSecondKeyUp();
this.setButtonState();
}
//Here, the ListView data source is updated to the first list
updateFirstListData() {
Array.prototype.forEach.call(this.firstListObj.liCollection, (list) => {
this.firstListData.forEach((data, index) => {
if (list.innerText.trim() === data.text) {
delete this.firstListData[index];
}
});
});
this.textboxEle.nativeElement.value= '';
let ds = [];
this.firstListData.forEach((data) => {
ds.push(data);
})
this.firstListData = ds;
}
//Here, the ListView dataSource is updated for the second list
updateSecondListData() {
Array.prototype.forEach.call(this.secondListObj.liCollection, (list) => {
this.secondListData.forEach((data, index) => {
if (list.innerText.trim() === data.text) {
delete this.secondListData[index];
}
});
});
this.textEle.nativeElement.value = '';
let ds = [];
this.secondListData.forEach((data) => {
ds.push(data);
})
this.secondListData = ds;
}
onFirstListSelect() {
this.secondBtnObj.disabled = false;
}
onSecondListSelect() {
this.thirdBtnObj.disabled = false;
}
//Here, filtering is handled using the dataManager for the first list
onFirstKeyUp(e) {
let value = this.textboxEle.nativeElement.value;
let data = new DataManager(this.firstListData).executeLocal(new Query().where('text', 'startswith', value, true));
if (!value) {
this.firstListObj.dataSource = this.firstListData.slice();
} else {
this.firstListObj.dataSource = data;
}
}
//Here, filtering is handled using the dataManager for the second list
onSecondKeyUp(e) {
let value =this.textEle.nativeElement.value;
let data = new DataManager(this.secondListData).executeLocal(new Query().where('text', 'startswith', value, true));
if (!value) {
this.secondListObj.dataSource = this.secondListData.slice();
} else {
this.secondListObj.dataSource = data;
}
}
//Here, the state of the button is changed
setButtonState() {
if (this.firstListObj.dataSource.length) {
this.firstBtnObj.disabled = false;
} else {
this.firstBtnObj.disabled = true;
this.secondBtnObj.disabled = true;
}
if (this.secondListObj.dataSource.length) {
this.fourthBtnObj.disabled = false;
} else {
this.fourthBtnObj.disabled = true;
this.thirdBtnObj.disabled = true;
}
}
}
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { ListViewModule } from '@syncfusion/ej2-angular-lists';
import { ButtonModule } from '@syncfusion/ej2-angular-buttons';
/**
* Module
*/
@NgModule({
imports: [
BrowserModule,
ListViewModule, ButtonModule
],
declarations: [AppComponent],
bootstrap: [AppComponent]
})
export class AppModule { }
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';
enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);
#container {
visibility: hidden;
}
#loader {
color: #008cff;
height: 40px;
width: 30%;
position: absolute;
top: 45%;
left: 45%;
}
#list-1,
#list-2 {
width: 40%;
height: 430px;
box-shadow: 0 1px 4px #ddd;
border-bottom: 1px solid #ddd;
}
#firstList, #secondList {
margin-top: 13px;
}
.e-btn {
width: 60px;
height: 60px;
margin-bottom: 15px;
}
#btn {
float: left;
width: 5%;
padding-left: 30px;
margin-top: 67px;
}
#list-1 {
float: left;
}
#list-2 {
float: right;
}
#firstInput {
width: 40%;
}
#secondInput {
margin-left: 150px;
width: 60%;
}
#text2 {
margin-top: -23px;
margin-left: 200px;
}