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ember-responsive Ember Observer Score

An ember-cli addon that gives you a simple, Ember-aware way of dealing with media queries.

All you need to do is provide your application's breakpoints and it'll expose the rest for you. Here is an interactive demo

Requirements

ember-responsive needs window.matchMedia() to function, which isn't available in some older browsers. Compatibility matrix

There is a polyfill by Paul Irish called matchMedia.js that will add support to older browsers

Getting Started

This is an ember-cli addon so, so all you need to do is

ember install ember-responsive

After that, simply register the breakpoints that are pertinent to your application in app/breakpoints.js:

export default {
  mobile:  '(max-width: 767px)',
  tablet:  '(min-width: 768px) and (max-width: 991px)',
  desktop: '(min-width: 992px) and (max-width: 1200px)',
  jumbo:   '(min-width: 1201px)'
};

This default config has already been provided for you. If you wish to change the values or add new ones, simply create a new app/breakpoints.js in your project and export your chosen config.

Now you can inject the media service in any object with access to the container:

import Controller from '@ember/controller';
import { inject as service } from '@ember/service';

export default class SomeController extends Controller {
  @service media;

  doSomething() {
    this.media.isMobile; // => true
  }
}

In your templates you have access to the media helper that allows you to query breakpoints easily.

{{#if (media 'isDesktop')}}
  Desktop view!
{{/if}}

You can also bind the list of active media queries to your app's rootElement. This means you won't have to deal with complicated media queries in CSS, instead simply use classes to style the different devices.

In your application.hbs template:

<div class="{{media 'classNames'}}">
  {{outlet}}
</div>

Injection

If you find explicitly injecting the service too repetitive, you can setup an initializer to inject it automatically in every controller and component like this:

// in app/initializers/ember-responsive
export default {
  name: 'responsive',
  initialize(application) {
    application.inject('controller', 'media', 'service:media');
    application.inject('component', 'media', 'service:media');
  }
};

Additional Media Queries

Media queries beyond those based on size will also work in your breakpoints.js file, including:

  portrait: '(orientation: portrait)',
  landscape: '(orientation: landscape)',
  dark: '(prefers-color-scheme: dark)',
  light: '(prefers-color-scheme: light)'

Updating to 2.x

When updating this addon, make sure to run the generate command. Choose no to overriding existing files, unless you want the defaults. This command has to be run when updating to 2.x if your application relies on automatic injection. Because as of version 1.2.9, the addon will generate an initializer to allow users to customize injection.

ember g ember-responsive

Updating to 3.x

The major breaking changes to update to 3.x are so far:

Updating to 5.x

Updating to 5.x should be seamless for modern (post-Octane) Ember apps.

Usage in engines

If you are using engines and you want to share responsive behaviour between the main application and engine, you must pass the 'media' service to the engine app.

Testing Helpers

This project provides a single test helper which works in both integration and acceptance tests to assist in testing content specific to different breakpoints.

Acceptance Tests

...
import { setBreakpoint } from 'ember-responsive/test-support';

...

test('example test', async function (assert) {
  setBreakpoint('mobile');
  await visit('/');

  // assert something specific to mobile
});

Integration Tests

...
import { setBreakpoint } from 'ember-responsive/test-support';

...

test('it renders', function (assert) {
  setBreakpoint('mobile');

  render(hbs`<YourComponent />`);

  // assert something specific to mobile
});

Multiple Breakpoints in Tests

You can set multiple breakpoints to the helper. This is useful if your breakpoints.js file defines breakpoints that overlap.

// in app/breakpoints.js
export default {
  tablet:  '(min-width: 768px)',
  desktop: '(min-width: 992px)',
  jumbo:   '(min-width: 1201px)'
};

// in test file
...
import { setBreakpoint } from 'ember-responsive/test-support';

...

test('it renders', function (assert) {
  setBreakpoint(['tablet', 'desktop']);

  render(hbs`<YourComponent />`);

  // assert something specific to desktop, i.e. sizes 992px - 1201px
  // `isTablet` and `isDesktop` will both return true
});

Tests

To run the tests, after cloning do:

yarn install
yarn test # Run all tests
yarn test:ember # Run using current ember version
yarn test:ember-compatibility # Run using ember-try versions

License

This library is lovingly brought to you by the FreshBooks developers. We've released it under the MIT license.