Material Design

Tab

Tabs organize and allow navigation between groups of content that are related and at the same level of hierarchy. Each Tab governs the visibility of one group of content.

Design & API Documentation

Installation

npm install @material/tab

Basic Usage

HTML Structure

<button class="mdc-tab" role="tab" aria-selected="false" tabindex="-1">
  <span class="mdc-tab__content">
    <span class="mdc-tab__icon material-icons" aria-hidden="true">favorite</span>
    <span class="mdc-tab__text-label">Favorites</span>
  </span>
  <span class="mdc-tab-indicator">
    <span class="mdc-tab-indicator__content mdc-tab-indicator__content--underline"></span>
  </span>
  <span class="mdc-tab__ripple"></span>
</button>

Styles

@import "@material/tab/mdc-tab";

JavaScript Instantiation

import {MDCTab} from '@material/tab';

const tab = new MDCTab(document.querySelector('.mdc-tab'));

See Importing the JS component for more information on how to import JavaScript.

Variants

Active Tab

NOTE: Don’t forget to add the mdc-tab-indicator--active class to the mdc-tab-indicator subcomponent.

<button class="mdc-tab mdc-tab--active" role="tab" aria-selected="true">
  <span class="mdc-tab__content">
    <span class="mdc-tab__icon material-icons" aria-hidden="true">favorite</span>
    <span class="mdc-tab__text-label">Favorites</span>
  </span>
  <span class="mdc-tab-indicator mdc-tab-indicator--active">
    <span class="mdc-tab-indicator__content mdc-tab-indicator__content--underline"></span>
  </span>
  <span class="mdc-tab__ripple"></span>
</button>

Tab with Indicator Spanning Only Content

In the example under Basic Usage, the Tab Indicator will span the entire tab. Alternatively, the tab indicator can be set up to span only the content of the tab if it is instead placed within the mdc-tab__content element:

<button class="mdc-tab" role="tab" aria-selected="false" tabindex="-1">
  <span class="mdc-tab__content">
    <span class="mdc-tab__icon material-icons" aria-hidden="true">favorite</span>
    <span class="mdc-tab__text-label">Favorites</span>
    <span class="mdc-tab-indicator">
      <span class="mdc-tab-indicator__content mdc-tab-indicator__content--underline"></span>
    </span>
  </span>
  <span class="mdc-tab__ripple"></span>
</button>

Tab Icons

We recommend using Material Icons from Google Fonts:

<head>
  <link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">
</head>

However, you can also use SVG, Font Awesome, or any other icon library you wish.

Style Customization

CSS Classes

CSS Class Description
mdc-tab Mandatory.
mdc-tab__content Mandatory. Indicates the text label of the tab.
mdc-tab__ripple Mandatory. Denotes the ripple surface for the tab.
mdc-tab--active Optional. Indicates that the tab is active.
mdc-tab--stacked Optional. Indicates that the tab icon and label should flow vertically instead of horizontally.
mdc-tab--min-width Optional. Indicates that the tab should shrink in size to be as narrow as possible without causing text to wrap.
mdc-tab__text-label Optional. Indicates an icon in the tab.
mdc-tab__icon Optional. Indicates a leading icon in the tab.

Sass Mixins

To customize the colors of any part of the tab, use the following mixins.

Mixin Description
mdc-tab-text-label-color($color) Customizes the color of the tab text label.
mdc-tab-icon-color($color) Customizes the color of the tab icon.
mdc-tab-states-color($color) Customizes the base states color, which affects hover/focus states and the press ripple.
mdc-tab-ink-color($color) Customizes the text label, icon, and base states color.
mdc-tab-parent-positioning Sets the positioning of the MDCTab’s parent element so that MDCTab.computeDimensions() reports the same values in all browsers.
mdc-tab-fixed-width($width) Sets the fixed width of the tab. The tab will never be smaller than the given width.

MDCTab Properties and Methods

Property Value Type Description
id string Value of the root tab element’s id attribute.
active boolean (read-only) Allows getting the active state of the tab.
focusOnActivate boolean (write-only) Sets whether the tab should focus itself when activated. Defaults to true.
Method Signature Description
activate(previousIndicatorClientRect?: ClientRect) => void Activates the indicator. previousIndicatorClientRect is an optional argument.
deactivate() => void Deactivates the indicator.
focus() => void Focuses the tab.
computeIndicatorClientRect() => ClientRect Returns the bounding client rect of the indicator.
computeDimensions() => MDCTabDimensions Returns the dimensions of the Tab.
Event Name Event Data Structure Description
MDCTab:interacted {"detail": {"tabId": string}} Emitted when the Tab is interacted with, regardless of its active state. Used by parent components to know which Tab to activate.

Usage within Web Frameworks

If you are using a JavaScript framework, such as React or Angular, you can create a Tab for your framework. Depending on your needs, you can use the Simple Approach: Wrapping MDC Web Vanilla Components, or the Advanced Approach: Using Foundations and Adapters. Please follow the instructions here.

MDCTabAdapter

Method Signature Description
addClass(className: string) => void Adds a class to the root element.
removeClass(className: string) => void Removes a class from the root element.
hasClass(className: string) => boolean Returns true if the root element contains the given class.
setAttr(attr: string, value: string) => void Sets the given attribute on the root element to the given value.
activateIndicator(previousIndicatorClientRect?: ClientRect) => void Activates the tab indicator subcomponent. previousIndicatorClientRect is an optional argument.
deactivateIndicator() => void Deactivates the tab indicator subcomponent.
getOffsetLeft() => number Returns the offsetLeft value of the root element.
getOffsetWidth() => number Returns the offsetWidth value of the root element.
getContentOffsetLeft() => number Returns the offsetLeft value of the content element.
getContentOffsetWidth() => number Returns the offsetWidth value of the content element.
notifyInteracted() => void Emits the MDCTab:interacted event.
focus() => void Applies focus to the root element.

MDCTabFoundation

Method Signature Description
handleClick() => void Handles the logic for the "click" event.
isActive() => boolean Returns whether the tab is active.
setFocusOnActivate(focusOnActivate: boolean) => void Sets whether the tab should focus itself when activated.
activate(previousIndicatorClientRect?: ClientRect) => void Activates the tab. previousIndicatorClientRect is an optional argument.
deactivate() => void Deactivates the tab.
computeDimensions() => MDCTabDimensions Returns the dimensions of the tab.

MDCTabFoundation Event Handlers

When wrapping the Tab component, it is necessary to register the following event handler. For an example of this, see the MDCTab component’s initialSyncWithDOM method.

Event Element Foundation Handler
click Root element handleClick()