Angular PrimeNG OrderList Events

Angular PrimeNG is an open-source framework with a rich set of native Angular UI components that are used for great styling and this framework is used to make responsive websites with very much ease. In this article, we will learn about OrderList Events in Angular PrimeNG.

OrderList component is used to maintain the list of items and products.

Angular PrimeNG OrderList Events:

• onReorder: It is a callback that is fired when the list is reordered.
• onSelectionChange: It is a callback to invoke when selection changes.
• onFilterEvent: It is a callback that is fired when filtering occurs.

Syntax:

<p-orderList 
    [value]="..."
    (event)=function()>
    ...
</p-orderList>

Creating Angular application & module installation:

Step 1: Create an Angular application using the following command.

ng new appname

Step 2: After creating your project folder i.e. appname, move to it using the following command.

cd appname

Step 3: Install PrimeNG in your given directory.

npm install primeng --save
npm install primeicons --save

Project Structure: It will look like the following

Steps to run the application: Run the below command to see the output

ng serve --save

Example 1: In this example, we will learn about onReorder. When we will Reorder list items using controls then this function will be invoked

• app.component.html:

HTML

<h1 style="color: green;">GeeksforGeeks</h1>
<h2>Angular PrimeNG OrderList Events</h2>

<div style="width: 50%;">
    <p-orderList
        [value]="product"
        header="OrderList Component"
        (onReorder)="onReorder()">
        <ng-template let-product pTemplate="item">
            <div class="product-item">
                <div class="product-list-detail">
                    <h5>{{product}}</h5>
                    <h6>{{gfg}}</h6>
                </div>
            </div>
        </ng-template>
    </p-orderList>
</div>

• app.component.ts:

Javascript

import { Component } from "@angular/core";

@Component({
    selector: "app-root",
    templateUrl: "./app.component.html"
})
export class AppComponent {
    product: string[] = ["Geek1", "Geek2", "Geek3", "Geek4"];

    gfg: string[] = ["200"];

    onReorder() {
        alert("On Reorder Called");
    }
}

• app.module.ts:

Javascript

import { NgModule } from "@angular/core";
import { BrowserModule } from "@angular/platform-browser";
import { BrowserAnimationsModule }
    from "@angular/platform-browser/animations";
import { AppComponent } from "./app.component";
import { OrderListModule } from "primeng/orderlist";

@NgModule({
    imports: [
      BrowserModule,
      BrowserAnimationsModule,
      OrderListModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})

export class AppModule {}

Output:

Example 2: Below is another example code that illustrates the use of Angular PrimeNG OrderList Events. In this example, we will learn about onSelectionChange. This function will be invoked, when we will click on any item in the orderList,

• app.component.html:

HTML

<h1 style="color: green;">GeeksforGeeks</h1>
<h2>Angular PrimeNG OrderList Events</h2>

<div style="width: 50%;">
    <p-orderList
        [value]="product"
        header="OrderList Component"
        (onSelectionChange)="onSelectionChange()">
        <ng-template let-product pTemplate="item">
            <div class="product-item">
                <div class="product-list-detail">
                    <h5>{{product}}</h5>
                    <h6>{{gfg}}</h6>
                </div>
            </div>
        </ng-template>
    </p-orderList>
</div>

• app.component.ts:

Javascript

import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html'
})

export class AppComponent {
    product: string[] = ['Geek1', 'Geek2', 'Geek3', 'Geek4'];

    gfg: string[] = ['200'];

    onSelectionChange(){
        alert("onSelectionChange Called")
    }
}

• app.module.ts:

Javascript

import { NgModule } from '@angular/core';
import { BrowserModule }
    from '@angular/platform-browser';
import { BrowserAnimationsModule }
    from '@angular/platform-browser/animations';
import { AppComponent } from './app.component';
import { OrderListModule } from 'primeng/orderlist';

@NgModule({
    imports: [
        BrowserModule,
        BrowserAnimationsModule,
        OrderListModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})

export class AppModule {}

Output:

Reference: https://primefaces.org/primeng/orderlist