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Angular PrimeNG BlockUI Component

  • Last Updated : 24 Aug, 2021

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 the BlockUI component in Angular PrimeNG.

BlockUI component: It is used to block the component or the whole page.

Properties:

  • blocked: It is used to control the blocked state. It is of the boolean data type, the default value is false.
  • target: It is used to define the name of the local ng-template variable referring to another component. It is of string data type, the default value documents.
  • baseZIndex: It is used to define the base z-Index value to use in layering. It is of number data type, the default value is 0.
  • autoZIndex: It is used to whether to automatically manage the layering. It is of boolean data type, the default value is true.
  • styleClass: It is used to define the style class of the component. It is of string data type, the default value is false.

Styling:

  • p-blockui: It is the masking element.
  • p-blockui-document: It is the masking element in full-screen mode.

 



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: This is the basic example that shows how to use the blockUI component.

app.component.html




<h2>GeeksforGeeks</h2>
<h5>PrimeNG BlockUI Component</h5>
<p-blockUI [blocked]="gfg"></p-blockUI>
  
<button
  type="button"
  pButton
  pRipple
  label="Click here to block"
  (click)="geeks()">
</button>

app.component.ts




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




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 know how to block a panel in the message component.

app.component.html




<h2>GeeksforGeeks</h2>
<h5>PrimeNG BlockUI Component</h5>
  
<button
  type="button"
  pButton
  pRipple
  label="Click Here to Block"
  (click)="gfg=true">
</button>
<button
  type="button"
  pButton
  pRipple
  label="Click Here to Unblock"
  (click)="gfg=false">
</button>
  
<p-blockUI [target]="geeks" [blocked]="gfg">
  <i class="pi pi-lock" style="font-size: 3rem"></i>
</p-blockUI>
<p-panel #geeks header="BlockUI" styleClass="p-mt-4">
  <p class="p-m-0">
    Angular PrimeNG is a framework used with 
    angular to create components with
    great styling and this framework is very 
    easy to use and is used to make
    responsive websites.
  </p>
  
</p-panel>

app.component.ts




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

app.module.ts




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/showcase/#/blockui




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