Header in Angular Tab component
22 Sep 202524 minutes to read
This section explains how to modify Tab header styles and configure header icons and their positions.
Styles
You can customize header styles by adding predefined classes to the Tab root element. These CSS classes control the visual appearance and selection behavior of Tab headers:
- e-fill: The selected Tab header background displays as a solid fill, providing clear visual distinction for the active tab.
- e-background: Tab headers have a solid fill background with the selected header featuring a highlighted border for emphasis.
- e-background e-accent: Tab headers have a solid fill background with the selected header displaying a highlighted border in the accent color theme.
When these custom style classes are not applied to the root element, the default Tab styling is used for all Tab items.
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { FormsModule } from '@angular/forms'
import { TabModule } from '@syncfusion/ej2-angular-navigations'
import { DropDownListModule } from '@syncfusion/ej2-angular-dropdowns'
import { Component, ViewChild } from '@angular/core';
import { DropDownListComponent, ChangeEventArgs } from '@syncfusion/ej2-angular-dropdowns';
import { TabComponent } from '@syncfusion/ej2-angular-navigations';
@Component({
imports: [
FormsModule, TabModule, DropDownListModule
],
standalone: true,
selector: 'app-container',
// specifies the template url path
templateUrl: 'app/app.component.html'
})
export class AppComponent {
@ViewChild('element') tabObj?: TabComponent;
@ViewChild('headerStyles') listObj?: DropDownListComponent;
public headerText: Record<string, any>[] = [{ 'text': 'Twitter' }, { 'text': 'Facebook' },{ 'text': 'WhatsApp' }];
public headerData: Object[] = [
{ Id: 'header1', headerStyle: 'default', text: 'Default' },
{ Id: 'header2', headerStyle: 'fill', text: 'Fill'},
{ Id: 'header3', headerStyle: 'background',text: 'Background' },
{ Id: 'header4', headerStyle: 'accent', text: 'Accent' }
];
public fields: Object = { text: 'text', value: 'headerStyle' };
public height: string = '220px';
public value: string = 'default';
public onChange(args: ChangeEventArgs): void {
this.removeStyleClass();
if (this.listObj?.value === 'fill') {
(this.tabObj as TabComponent).element.classList.add('e-fill');
} else if (this.listObj?.value === 'background') {
(this.tabObj as TabComponent).element.classList.add('e-background');
} else if (this.listObj?.value === 'accent') {
(this.tabObj as TabComponent).element.classList.add('e-background');
(this.tabObj as TabComponent).element.classList.add('e-accent');
}
}
public removeStyleClass(): void {
(this.tabObj as TabComponent).element.classList.remove('e-fill');
(this.tabObj as TabComponent).element.classList.remove('e-background');
(this.tabObj as TabComponent).element.classList.remove('e-accent');
}
}<div id="wrapper" style='margin-top: 20px'>
<div id='content' style="margin: 0px auto">
<div id="default" style="padding-top:20px;width:250px">
<div class='row'>
<div>
<label> Header Style </label>
</div><br />
<div>
<ejs-dropdownlist id='headerStyles' #headerStyles [dataSource]='headerData'
(change)='onChange($event)' [value]='value' [fields]='fields' [popupHeight]='height'>
</ejs-dropdownlist>
</div>
</div>
</div>
<br />
<div>
<ejs-tab id="element" #element>
<e-tabitems>
<e-tabitem [header]='headerText[0]'>
<ng-template #content>
Twitter is an online social networking service that enables users to send and read short
140-character messages called "tweets".
Registered users can read and post tweets, but those who are unregistered can only read
them. Users access Twitter
through the website interface, SMS or mobile device app Twitter Inc. is based in San
Francisco and has more than 25
offices around the world. Twitter was created in March 2006 by Jack Dorsey, Evan Williams,
Biz Stone, and Noah Glass
and launched in July 2006. The service rapidly gained worldwide popularity, with more than
100 million users posting
340 million tweets a day in 2012.The service also handled 1.6 billion search queries per
day.
</ng-template>
</e-tabitem>
<e-tabitem [header]='headerText[1]'>
<ng-template #content>
Facebook is an online social networking service headquartered in Menlo Park, California. Its
website was launched on February
4, 2004, by Mark Zuckerberg with his Harvard College roommates and fellow students Eduardo
Saverin, Andrew McCollum,
Dustin Moskovitz and Chris Hughes.The founders had initially limited the website\'\s
membership to Harvard students,
but later expanded it to colleges in the Boston area, the Ivy League, and Stanford
University. It gradually added support
for students at various other universities and later to high-school students.
</ng-template>
</e-tabitem>
<e-tabitem [header]='headerText[2]'>
<ng-template #content>
WhatsApp Messenger is a proprietary cross-platform instant messaging client for smartphones
that operates under a subscription
business model. It uses the Internet to send text messages, images, video, user location and
audio media messages to
other users using standard cellular mobile numbers. As of February 2016, WhatsApp had a user
base of up to one billion,[10]
making it the most globally popular messaging application. WhatsApp Inc., based in Mountain
View, California, was acquired
by Facebook Inc. on February 19, 2014, for approximately US$19.3 billion.
</ng-template>
</e-tabitem>
</e-tabitems>
</ejs-tab>
</div>
</div>
</div>import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));Icon positions
You can customize the position of Tab header icons using the iconPosition property. This property works in conjunction with the header items iconCss property to determine both the icon source and its placement. By default, Tab header icons are positioned on the left side of the header text.
The available position values are:
- Left: Icon appears to the left of the Tab header text (default behavior).
- Right: Icon appears to the right of the Tab header text.
- Top: Icon appears above the Tab header text.
- Bottom: Icon appears below the Tab header text.
import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { FormsModule } from '@angular/forms'
import { TabComponent, TabItemsDirective, TabItemDirective } from '@syncfusion/ej2-angular-navigations'
import { DropDownListComponent } from '@syncfusion/ej2-angular-dropdowns'
import { Component, ViewChild } from '@angular/core';
import { DropDownListModel, ChangeEventArgs } from '@syncfusion/ej2-dropdowns';
import { TabComponent } from '@syncfusion/ej2-angular-navigations';
import { enableRipple } from '@syncfusion/ej2-base';
import { DropDownListComponent } from '@syncfusion/ej2-angular-dropdowns';
/**
* Adaptive Tab Component
*/
@Component({
imports: [
FormsModule
],
standalone: true,
selector: 'app-container',
// specifies the template url path
template: ` <div id="wrapper" style='margin-top: 20px'><div id='content' style="margin: 0px auto">
<div id="default" style="padding-top:20px;width:250px">
<div class='row'>
<div>
<label> Icon Position </label>
</div><br/>
<div>
<ejs-dropdownlist id='iconPosition' #iconPosition [dataSource]='positionData' (change)='onChange($event)' [value]='value' [fields]='fields' [popupHeight]='height'></ejs-dropdownlist>
</div>
</div>
</div>
<br/><div><ejs-tab id="element" #element>
<e-tabitems>
<e-tabitem [header]='headerText[0]'>
<ng-template #content>
Twitter is an online social networking service that enables users to send and read short 140-character messages called "tweets".
Registered users can read and post tweets, but those who are unregistered can only read them. Users access Twitter
through the website interface, SMS or mobile device app Twitter Inc. is based in San Francisco and has more than 25
offices around the world. Twitter was created in March 2006 by Jack Dorsey, Evan Williams, Biz Stone, and Noah Glass
and launched in July 2006. The service rapidly gained worldwide popularity, with more than 100 million users posting
340 million tweets a day in 2012.The service also handled 1.6 billion search queries per day.
</ng-template>
</e-tabitem>
<e-tabitem [header]='headerText[1]'>
<ng-template #content>
Facebook is an online social networking service headquartered in Menlo Park, California. Its website was launched on February
4, 2004, by Mark Zuckerberg with his Harvard College roommates and fellow students Eduardo Saverin, Andrew McCollum,
Dustin Moskovitz and Chris Hughes.The founders had initially limited the website\'\s membership to Harvard students,
but later expanded it to colleges in the Boston area, the Ivy League, and Stanford University. It gradually added support
for students at various other universities and later to high-school students.
</ng-template>
</e-tabitem>
<e-tabitem [header]='headerText[2]'>
<ng-template #content>
WhatsApp Messenger is a proprietary cross-platform instant messaging client for smartphones that operates under a subscription
business model. It uses the Internet to send text messages, images, video, user location and audio media messages to
other users using standard cellular mobile numbers. As of February 2016, WhatsApp had a user base of up to one billion,[10]
making it the most globally popular messaging application. WhatsApp Inc., based in Mountain View, California, was acquired
by Facebook Inc. on February 19, 2014, for approximately US$19.3 billion.
</ng-template>
</e-tabitem>
</e-tabitems>
</ejs-tab>
</div>
</div>
</div>`
})
export class AppComponent {
@ViewChild('element') tabObj?: TabComponent;
@ViewChild('iconPosition') listObj?: DropDownListComponent;
public positionData: Object[] = [
{ position: 'left', text: 'Left' },
{ position: 'right', text: 'Right'},
{ position: 'top',text: 'Top' },
{ position: 'bottom', text: 'Bottom' }
];
public fields: Object = { text: 'text', value: 'position' };
public height: string = '220px';
public value: string = 'left';
public onChange(ChangeEventArgs: any): void {
let items: any = (this.tabObj as TabComponent).items;
for(let i: number = 0; i < items.length; i++) {
items[i].header.iconPosition = this.listObj?.value;
}
}
public headerText: Object = [{ 'text': 'Twitter', 'iconCss': 'e-twitter' }, { 'text': 'Facebook', 'iconCss': 'e-facebook' },{ 'text': 'WhatsApp', 'iconCss': 'e-whatsapp' }];
}import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));