@material/mwc-icon-button-toggle

<mwc-icon-button-toggle>

IMPORTANT: The Material Web Components are a work in progress and subject to major changes until 1.0 release.

Toggle buttons can be used to group related options. To emphasize groups of related toggle buttons, a group should share a common container.

Icons can be used as toggle buttons when they allow selection, or deselection, of a single choice, such as marking an item as a favorite.

For the non-toggling version of this component, see <mwc-icon-button>

Material Design Guidelines: Toggle Button

Demo

Installation

npm install @material/mwc-icon-button-toggle

NOTE: The Material Web Components are distributed as ES2017 JavaScript Modules, and use the Custom Elements API. They are compatible with all modern browsers including Chrome, Firefox, Safari, Edge, and IE11, but an additional tooling step is required to resolve bare module specifiers, as well as transpilation and polyfills for IE11. See here for detailed instructions.

Example usage

Standard

on = false

<mwc-icon-button-toggle onIcon="sentiment_very_satisfied" offIcon="sentiment_very_dissatisfied"></mwc-icon-button-toggle>

on = true

<mwc-icon-button-toggle on onIcon="sentiment_very_satisfied" offIcon="sentiment_very_dissatisfied"></mwc-icon-button-toggle>

SVG

on = false

<mwc-icon-button-toggle>
  <svg slot="onIcon" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M0 0h24v24H0z" fill="none"/><path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-2 15l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z"/></svg>
  <svg slot="offIcon" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path fill="none" d="M0 0h24v24H0V0zm0 0h24v24H0V0z"/><path d="M16.59 7.58L10 14.17l-3.59-3.58L5 12l5 5 8-8zM12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm0 18c-4.42 0-8-3.58-8-8s3.58-8 8-8 8 3.58 8 8-3.58 8-8 8z"/></svg>
</mwc-icon-button-toggle>

on = true

<mwc-icon-button-toggle on>
  <svg slot="onIcon" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M0 0h24v24H0z" fill="none"/><path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-2 15l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z"/></svg>
  <svg slot="offIcon" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path fill="none" d="M0 0h24v24H0V0zm0 0h24v24H0V0z"/><path d="M16.59 7.58L10 14.17l-3.59-3.58L5 12l5 5 8-8zM12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm0 18c-4.42 0-8-3.58-8-8s3.58-8 8-8 8 3.58 8 8-3.58 8-8 8z"/></svg>
</mwc-icon-button-toggle>

Image

on = false

<mwc-icon-button-toggle>
  <img slot="onIcon" src="https://picsum.photos/id/28/24/24">
  <img slot="offIcon" src="https://picsum.photos/id/141/24/24?grayscale">
</mwc-icon-button-toggle>

on = true

<mwc-icon-button-toggle on>
  <img slot="onIcon" src="https://picsum.photos/id/28/24/24">
  <img slot="offIcon" src="https://picsum.photos/id/141/24/24?grayscale">
</mwc-icon-button-toggle>

Disabled

<mwc-icon-button-toggle disabled onIcon="sentiment_very_satisfied" offIcon="sentiment_very_dissatisfied"></mwc-icon-button-toggle>

With toggled aria label

Some designs may call for the aria label to change depending on the icon button state. In this case, specify the ariaLabelOn and ariaLabelOff properties and omit the aria-label attribute.

<mwc-icon-button-toggle ariaLabelOn="Very satisfied" ariaLabelOff="Very dissatisfied" onIcon="sentiment_very_satisfied" offIcon="sentiment_very_dissatisfied"></mwc-icon-button-toggle>

Customize colors

on = false

on = true

mwc-icon-button-toggle {
  color: tomato;
}

Fonts

Most users should include the following in their application HTML when using icons:

<link href="https://fonts.googleapis.com/css?family=Material+Icons&display=block" rel="stylesheet">

This loads the Material Icons font, which is required to render icons, and is not loaded automatically. If you see plain text instead of an icon, then the most likely cause is that the Material Icons font is not loaded.

To see all icons that are available in the Material Icons font, see Material Icons.

For technical details about the Material Icons font, see the Material Icons Developer Guide.

API

Slots

Name	Description
onIcon	Optional <img> or <svg> to display instead of using an icon font for the onIcon property.
offIcon	Optional <img> or <svg> to display instead of using an icon font for the offIcon property.

Properties / Attributes

Name	Type	Default	Description
aria-label	string	''	Accessible label for the button.
on	boolean	false	Whether the toggle is activated.
onIcon	string	''	Icon to display when on is true.
offIcon	string	''	Icon to display when on is false.
disabled	boolean	false	Disabled buttons cannot be interacted with and have no visual interaction effect.
ariaLabelOn	string	undefined	aria-label of the button when on is true. If set, ariaLabelOff must also be set.
ariaLabelOff	string	undefined	aria-label of the button when on is false. If set, ariaLabelOn must also be set.

Methods

None

Events

Name	Detail	Description
icon-button-toggle-change	{isOn: boolean}	Indicates the button has been toggled. isOn indicates the on value of the toggle button.

CSS custom properties

Inherits CSS Custom properties from:

• mwc-ripple

Global custom properties

This component exposes the following global theming custom properties.

Name	Description
--mdc-icon-font	Font that supports ligatures and determines which icons are available (see fonts above).
--mdc-theme-text-disabled-on-light	Color of icon when disabled is true.

Additional references

• MDC Web: Icon Buttons