Angular PrimeNG BlockUI Templates

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 know how to use Angular PrimeNG BlockUI Templates

BlockUI component is used to block the component or the whole page. Angular PrimeNG BlockUI Templates are used to put some content on some pre-structured containers. BlockUI templates are discussed below:

• content: This template is used to create content for the BlockUI.

Syntax:

<p-blockUI [blocked]="...">
    <ng-template pTemplate="content" let-node>
          ...
    </ng-template>
</p-blockUI>

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:

Example 1: In this example, we will learn about BlockUI Templates. In the content template, we will display a heading and lock-icon.

app.component.html

HTML

<div>
    <h1 style="color: green;">
        GeeksforGeeks
    </h1>

    <h2>
        Angular PrimeNG BlockUI Templates
    </h2>

    <p-blockUI [blocked]="gfg">
        <ng-template pTemplate="content" let-node>
            <h1>I am Blocked Now  </h1>
            <i class="pi pi-lock" style="font-size: 3rem"></i>
        </ng-template>
    </p-blockUI>

    <button type="button" pButton pRipple
        label="Click here to block" (click)="geeks()">
    </button>
</div>

app.component.ts

Javascript

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

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

export class AppComponent {
    gfg: boolean = false;

    geeks() {
        this.gfg = true;
        setTimeout(() => {
            this.gfg = false;
        }, 3000);
    }
}

app.module.ts

Javascript

import { NgModule } from "@angular/core";
import { BrowserModule } from "@angular/platform-browser";
import { FormsModule } from "@angular/forms";
import { BrowserAnimationsModule }
    from "@angular/platform-browser/animations";

import { AppComponent } from "./app.component";
import { ButtonModule } from "primeng/button";
import { BlockUIModule } from "primeng/blockui";
import { PanelModule } from "primeng/panel";

@NgModule({
    imports: [
        BrowserModule,
        BrowserAnimationsModule,
        BlockUIModule,
        ButtonModule,
        PanelModule,
        FormsModule,
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
})
export class AppModule { }

Output:

Example 2: In this example, we will use a ng-template variable to block a certain part and define content template.

app.component.html

HTML

<div style="width:50%">
    <h1 style="color:green">
        GeeksforGeeks
    </h1>
    <h2>
        Angular PrimeNG BlockUI Templates
    </h2>
    <p-blockUI [target]="pnl" [blocked]="gfg">
        <ng-template pTemplate="content" let-node>
            <h3>I am Blocked Now  </h3>
            <i class="pi pi-lock" style="font-size: 3rem"></i>
        </ng-template>

    </p-blockUI>

    <p-panel #pnl header="GeeksforGeeks">
        GeeksforGeeks is a computer science portal
    </p-panel>
    <br>

    <button type="button" pButton pRipple
        label="Click here to block" (click)="geeks()">
    </button>
</div>

app.component.ts

Javascript

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

@Component({
    selector: "app-root",
    templateUrl: "./app.component.html",
})
export class AppComponent {
    gfg: boolean = false;

    geeks() {
        this.gfg = true;
        setTimeout(() => {
            this.gfg = false;
        }, 3000);
    }
}

app.module.ts

Javascript

import { NgModule } from "@angular/core";
import { BrowserModule } from "@angular/platform-browser";
import { FormsModule } from "@angular/forms";
import { BrowserAnimationsModule }
    from "@angular/platform-browser/animations";

import { AppComponent } from "./app.component";
import { ButtonModule } from "primeng/button";
import { BlockUIModule } from "primeng/blockui";
import { PanelModule } from "primeng/panel";

@NgModule({
    imports: [
        BrowserModule,
        BrowserAnimationsModule,
        BlockUIModule,
        ButtonModule,
        PanelModule,
        FormsModule,
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent],
})
export class AppModule { }

Output:

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