Angular PrimeNG OrganizationChart Selection

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. It provides a lot of templates, components, theme design, an extensive icon library, and much more. In this article, we will see the Angular PrimeNG OrganizationChart Selection Component.

The OrganizationChart Component visualizes the data in hierarchical organizational data. The data is arranged in the tree format. The component provides a lot of properties, styling, events, templates, etc. which can be modified to create many variations. There are 2 types of selection methods provided by the OrganizationChart, i.e.,  single or multiple, which can be enabled by setting the selectionMode property.

Syntax:

<p-organizationChart [value]="..."
                     selectionMode="single"
                     [(selection)]="selectedNode">
</p-organizationChart>

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
npm install chart.js --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: Below is the example that illustrates the use of the Angular PrimeNG OrganizationChart Selection Component using single selections.

• app.component.html:

HTML

<h1 style="color: green">
  GeeksforGeeks
</h1>
<h5>
      Angular PrimeNG OrganizationChart
      Selection Component.
</h5>

<p-organizationChart [value]="gfg"
                     selectionMode="single">
</p-organizationChart>

• app.component.ts:

Javascript

import {Component} from '@angular/core';
import {TreeNode} from 'primeng/api';
import {MessageService} from 'primeng/api';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
    providers: [MessageService],
    styleUrls: ['./app.component.scss']
})

export class AppComponent {
    gfg: TreeNode[];

    constructor(private messageService: MessageService) {}

    ngOnInit() {
        this.gfg = [
            {
                label: 'Data Structures and Algorithms',
                expanded: true,
                children: [
                    {
                        label: 'Data Structures',
                        expanded: true,
                        children: [
                            {
                                label: 'Queue',
                            },
                            {
                                label: 'Red-Black Tree',
                            },
                        ],
                    },
                    {
                        label: 'Algorithms',
                        expanded: true,
                        children: [
                            {
                                label: 'Hashing',
                            },
                            {
                                label: 'Divide and Conquer',
                            },
                        ],
                    },
                ],
            },
        ];
    }
}

• 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 { OrganizationChartModule }
    from 'primeng/organizationchart';

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

export class AppModule { }

Output:

Example 2: Below is another example that illustrates the use of the Angular PrimeNG OrganizationChart Selection Component using multiple selections. 

• app.component.html:

HTML

<h1 style="color: green">
  GeeksforGeeks
</h1>
<h5>
      Angular PrimeNG OrganizationChart
      Selection Component.
</h5>
<p-organizationChart [value]="gfg"
                     selectionMode="multiple">
</p-organizationChart>

• app.component.ts:

Javascript

import {Component} from '@angular/core';
import {TreeNode} from 'primeng/api';
import {MessageService} from 'primeng/api';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
    providers: [MessageService],
    styleUrls: ['./app.component.scss']
})

export class AppComponent {
    gfg: TreeNode[];

    constructor(private messageService: MessageService) {}

    ngOnInit() {
        this.gfg = [
            {
                label: 'Data Structures and Algorithms',
                expanded: true,
                children: [
                    {
                        label: 'Data Structures',
                        expanded: true,
                        children: [
                            {
                                label: 'Queue',
                            },
                            {
                                label: 'Red-Black Tree',
                            },
                        ],
                    },
                    {
                        label: 'Algorithms',
                        expanded: true,
                        children: [
                            {
                                label: 'Hashing',
                            },
                            {
                                label: 'Divide and Conquer',
                            },
                        ],
                    },
                ],
            },
        ];
    }
}

• 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 { OrganizationChartModule }
    from 'primeng/organizationchart';

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

export class AppModule { }

Output:

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