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RE: Is there a public list of events that should fire when ARIA is used?

From: Bryan Garaventa <bryan.garaventa@ssbbartgroup.com>
Date: Sat, 21 Feb 2015 23:39:02 +0000
To: Dominic Mazzoni <dmazzoni@google.com>
CC: "public-pfwg@w3.org" <public-pfwg@w3.org>
Message-ID: <BY2PR03MB347959BE6D29A6189892853982B0@BY2PR03MB347.namprd03.prod.outlook.com>
I do have one question though, it looks like aria-describedby isn’t listed as firing any event when changed programmatically. Does this actually fire any event when this occurs?

I’m referring to the scenario when an element has focus, such as a form field, and within a certain time delay (e.g 1.5 seconds), a tooltip is programmatically displayed by inserting it into the DOM, where aria-describedby is then set on the element that has focus to point to the newly displayed tooltip.

This scenario would also occur for dynamically updating tooltips, such as when typing into a form field that rendered different tooltips as you type in order to shape the user’s input responses.

Does the modification of aria-describedby then fire a specific event when this occurs?

From: Dominic Mazzoni [mailto:dmazzoni@google.com]
Sent: Friday, February 20, 2015 11:24 PM
To: Bryan Garaventa
Cc: public-pfwg@w3.org
Subject: Re: Is there a public list of events that should fire when ARIA is used?

Hi Bryan,

The WAI-ARIA User Agent Implementation Guide includes a section on what events are supposed to be fired in response to ARIA changes: http://www.w3.org/TR/wai-aria-implementation/#mapping_events

If you're testing IE, the table should be sufficient. However if you're testing Firefox or Chrome, I'm not sure you can use Accessible Event Watcher because I think it only knows about MSAA and UIA events, but Firefox and Chrome also send IAccessible2 events.

- Dominic

On Fri, Feb 20, 2015 at 9:10 PM, Bryan Garaventa <bryan.garaventa@ssbbartgroup.com<mailto:bryan.garaventa@ssbbartgroup.com>> wrote:
Hopefully somebody can point me in the right direction here.

I'm experimenting with Accessible Event Watcher, at

In order to get a better understanding of which events fire when ARIA is used on the Windows OS, and when this happens such as when various properties and states change during interaction.

However, I'm not sure which events I should be checking for, what their names are, and which ARIA changes should be triggering these.

Is there a public list of events somewhere that describes which events should fire and when that I could review in order to understand these things better? I expect this may be platform specific, but any resource would be helpful.


Received on Saturday, 21 February 2015 23:39:33 UTC

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