A11y First

& Everyone Wins

Ava Wroten
She/Her

Software Engineer at

On Gitlab @gaiety Or Github @sharpshark28

We'll Discuss

A project feature saved by A11y

• Composable Components
• Discoverable UX
• Rendering Tests

Feature: Item Reordering

Mouse Drag & Drop

Do we support Touch?

What about A11y?

Equity

15% of the World

lives with some form of disability

Web assistive technologies commonly help with...

• Vision
• Hearing
• Movement

Degrees of Disabilities

Limited mobility, muscle slowness, tremors, low vision, color blindness, partial hearing loss, etc

👩🏽‍🔬 👨🏾‍🎨 👩🏻‍🔧 👨🏼‍✈️

I build software for humans

So I did some research...

ember-sortable

✔️ Mouse Drag & Drop

✔️ Touch Drag & Drop

Component Structure

Splattributes

index.hbs

            <SortableGroupAccessible
              tabindex="0"
              class="border focus:border-teal-400"
            > Foo </SortableGroupAccessible>
          

              <div ...attributes>
                {{yield}}
              </div>
            

              <div tabindex="0" class="border focus:border-teal-400"
              > Foo </div>
            

Events & Modifiers

sortable-group-accessible.hbs

            <div
              {{on 'focus' this.handleFocus}}
              {{on 'blur' this.handleBlur}}
              {{key-up this.handleArrowUp key='ArrowUp'}}
              {{key-up this.handleArrowDown key='ArrowDown'}}
          

modifiers/key-up.js

            import { modifier } from 'ember-modifier';
            const listener = (evt) => {
              if (!desiredKey || desiredKey === evt.key) handler(evt);
            }
            export default modifier(function keyUp(element, [handler], { key: desiredKey }) {
              element.addEventListener('keyup', listener);
              return () => { element.removeEventListener('keyup', listener); }
            });
          

@ember/test-helpers

• click
• triggerEvent
• triggerKeyEvent

Modifier Tests

modifiers/key-up-test.js

            test('it can listen for specific key up events', async function(assert) {
              this.keyUp = ({ key }) => {
                assert.step('key up');
                assert.equal(key, 'Enter');
              };
              await render(hbs`
                <div {{key-up this.keyUp}} data-test-id='keyup'></div>`);
              let selector = '[data-test-id=keyup]';
              await triggerKeyEvent(selector, 'keyup', 'Enter');
              assert.verifySteps(['key up']);
            });
          

Testing Reordering

index-test.js

            assert.dom(findAll('[data-test-id=item]')[0]).hasText('Item 1');
            assert.dom(findAll('[data-test-id=item]')[1]).hasText('Item 2');

            await triggerEvent('[data-test-id=group]', 'focus');
            await click('[data-test-id=sort-down]');

            assert.dom(findAll('[data-test-id=item]')[0]).hasText('Item 2');
            assert.dom(findAll('[data-test-id=item]')[1]).hasText('Item 1');
          

Team Wins

• Quick Feedback Loop
  • ...with development
  • ...with design
  • ...with project managers
• Sign off for UX
• Less stress on QA
• Less scope creep

v2.x.x ember-sortable

Where do we go from here?

• ember-sortable v2.2.x modifiers
• ember-a11y-testing

Outro

• Adding Functionality w/ Composable Components
• Equitable & Discoverable UX
• Automation Testing A11y

We are hiring!

Ava's Challenge to You

Hire someone different than you.

Make A11y a priority at your next design meeting!