Accessible Widgets 1/4 (Class)
A presentation at John Slatin AccessU 2016 in in Austin, TX, USA by Eric Eggert
Accessible Widgets Eric Eggert, Knowbility & W3C AccessU 2016, May 9th
Eric Eggert G e r m a n y 2 0 1 3 – t o d a y : W 3 C / W A I 2 0 1 6 – t o d a y : K n o w b i l i t y T r a n s l a H n g W C A G t o H u m a n .
Times Day & Time Room Presenter Topics May 9th, 10:15-11:45 JBWS 165 Patrick Fox Focus management, Announcing dynamic content, Tool Hps, Modal dialogs, Dynamic table filtering and sorHng May 9th, 4:00-5:30 JBWS 163 Eric Eggert Date picker, Time field, Combo box, Progress bar May 10th, 10:15-11:45 JBWS 163 Eric Eggert Slider, Accordion control, Tabs, Alerts May 10th, 2:15-3:45 JBWS 163 Patrick Fox Eric Eggert Wizard progress indicator, File selector and upload, Form validaHon, Search by locaHon, Dynamic applicaHon page elements and flow
Date picker, Time field, Combo box, Progress bar
Context
User Experience
Usability
To ARIA or not to ARIA?
- If you can use a naDve HTML5 element or aJribute with the semanDcs and behaviour you require already built in, instead of re-purposing an element and adding an ARIA role, state or property to make it accessible , then do so.
- Do not change naDve semanDcs, unless you really have to .
Example:
<h1 role="button">heading button</h1>
Example:
<h1><button>headingbutton</button></h1>
All interacDve ARIA controls must be usable with the keyboard.
Example: I f using role=button the element must be able to receive focus and a user must be able to activate the action associated with the element using both the enter (on WIN OS) or return (MAC OS) and the space key.
Do not use role="presentaDon" or aria-hidden="true" on a visible focusable element .
All interacDve elements must have an accessible name.
All the Demos! h]p://codepen.io/collecHon/nqBLjL/
Date Picker
HTML5 input type="date" The input element with a type a]ribute whose value is "date" represents a control for secng the element’s value to a string represenHng a date.
HTML5 input type="date" <label for="date">Date</label
<input type="date" id="date">
ARIA Enabled h]p://www.w3.org/TR/wai-aria-pracHces/#datepicker
Date Picker Examples • www.oaa-accessibility.org/examplep/datepicker1/
• freqdec.github.io/datePicker/demo/#demo-1
• whatsock.com/tsg/Coding%20Arena/ARIA %20Date%20Pickers/ARIA%20Date%20Picker %20%28Basic%29/demo.htm
• blog.fastmail.com/2015/12/15/the-anatomy-of- a-good-date-and-Hme-widget/
Time Field
HTML5 input type="2me" <label for="Hme">Time</label
<input type="Hme" id="Hme ">
Or: HTML5 input w/ datalist <label for="time">Time</label> <input type="text" id="time" list="times"> <datalist id="times">
<option value="1pm">1pm</option> <option value="2pm">2pm</option> <option value="3pm">3pm</option> </datalist>
Time Field Example • blog.fastmail.com/2015/12/15/the-anatomy-of- a-good-date-and-Hme-widget/
Select <label for="time">Time</label> <select id="time">
<option value="1pm">1pm</option> <option value="2pm">2pm</option> <option value="3pm">3pm</option> </select >
Combo Box aka Autocomplete
Remember?
HTML5 input w/ datalist
<label for="time">Time</label>
<input type="text" id="time" list="times">
<datalist id="times">
Combo box Example • www.oaa-accessibility.org/example/10/
Progress Bar
HTML5 progress element‽ <progress value="0.6" max="1">60%</ progress>
<progress indeterminate>Loading </progress>
Progress bar Example • h]p://getbootstrap.com/components/#progress- label
• www.oaa-accessibility.org/example/27/
Sources: • Font: Lato • Skull: Created by Andrew Cameron, from the Noun Project
