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Ngx-Bootstrap – Popover

Ngx-Bootstrap - Popover

ngx-bootstrap popover component provides a small overlay component to provide small information about a component.

PopoverDirective

selector

  • popover

Inputs

  • adaptivePosition − boolean, sets disable adaptive position.
  • container − string, A selector specifying the element the popover should be appended to.
  • containerClass − string, Css class for popover container
  • delay − number, Delay before showing the tooltip
  • isOpen − boolean, Returns whether or not the popover is currently being shown
  • outsideClick − boolean, Close popover on outside click, default: false
  • placement − “top” | “bottom” | “left” | “right” | “auto” | “top left” | “top right” | “right top” | “right bottom” | “bottom right” | “bottom left” | “left bottom” | “left top”, Placement of a popover. Accepts: “top”, “bottom”, “left”, “right”.
  • popover − string | TemplateRef<any>, Content to be displayed as popover.
  • popoverContext − any, Context to be used if popover is a template.
  • popoverTitle − string, Title of a popover.
  • triggers − string, Specifies events that should trigger. Supports a space separated list of event names.

Outputs

  • onHidden − Emits an event when the popover is hidden.
  • onShown − Emits an event when the popover is shown.

Methods

  • setAriaDescribedBy() − Set attribute aria-describedBy for element directive and set id for the popover.
  • show() − Opens an element’s popover. This is considered a “manual” triggering of the popover.
  • hide() − Closes an element’s popover. This is considered a “manual” triggering of the popover.
  • toggle() − Toggles an element’s popover. This is considered a “manual” triggering of the popover.

Example

As we’re going to use a popover, We’ve to update app.module.ts used in ngx-bootstrap Pagination chapter to use PopoverModule and PopoverConfig.

Update app.module.ts to use the PopoverModule and PopoverConfig.

app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { AppComponent } from './app.component';
import { TestComponent } from './test/test.component';
import { AccordionModule } from 'ngx-bootstrap/accordion';
import { AlertModule,AlertConfig } from 'ngx-bootstrap/alert';
import { ButtonsModule } from 'ngx-bootstrap/buttons';
import { FormsModule } from '@angular/forms';
import { CarouselModule } from 'ngx-bootstrap/carousel';
import { CollapseModule } from 'ngx-bootstrap/collapse';
import { BsDatepickerModule, BsDatepickerConfig } from 'ngx-bootstrap/datepicker';
import { BsDropdownModule,BsDropdownConfig } from 'ngx-bootstrap/dropdown';
import { PaginationModule,PaginationConfig } from 'ngx-bootstrap/pagination';
import { PopoverModule, PopoverConfig } from 'ngx-bootstrap/popover';

@NgModule({
   declarations: [
      AppComponent,
      TestComponent
   ],
   imports: [
      BrowserAnimationsModule,
      BrowserModule,
      AccordionModule,
      AlertModule,
      ButtonsModule,
      FormsModule,
      CarouselModule,
      CollapseModule,
      BsDatepickerModule.forRoot(),
      BsDropdownModule,
      ModalModule,
      PaginationModule,
      PopoverModule
   ],
   providers: [AlertConfig, 
      BsDatepickerConfig, 
      BsDropdownConfig,
      BsModalService,
      PaginationConfig],
   bootstrap: [AppComponent]
})
export class AppModule { }

Update test.component.html to use the modal.

test.component.html

<button type="button" class="btn btn-default btn-primary"
   popover="Welcome to Adglob." [outsideClick]="true">
   Default Popover
</button>
<button type="button" class="btn btn-default btn-primary"
   popover="Welcome to Adglob."
   popoverTitle="Adglob" 
   [outsideClick]="true"
   placement="right">
   Right Aligned popover
</button>

Update test.component.ts for corresponding variables and methods.

test.component.ts

import { Component, OnInit } from '@angular/core';
import { BsModalService } from 'ngx-bootstrap/modal';
import { PageChangedEvent } from 'ngx-bootstrap/pagination';

@Component({
   selector: 'app-test',
   templateUrl: './test.component.html',
   styleUrls: ['./test.component.css']
})
export class TestComponent implements OnInit {
   constructor() {}
   ngOnInit(): void {
   }
}

Build and Serve

Run the following command to start the Angular server.

ng serve

Once the server is up and running. Open http://localhost:4200. Click on the Open modal button and verify the following output.

Ngx-Bootstrap - Popover

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