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ddd6d00a57
Previously, we supported an action on text leaf and image accessibles if an ancestor was a link or was clickable. However, we didn't support it on any other kind of descendant, nor could clients differentiate between a click handler on the descendant itself vs an action propagated because of an ancestor. In addition, the click was performed on the ancestor element itself, rather than bubbling up to the ancestor. This was probably never a real problem given the limited scope, but it meant that the actual event target was lost. This has been replaced by a "click ancestor" action supported on all descendants of ancestors providing an action. The click is dispatched to the descendant and bubbles up to the ancestor. Aside from consistency and the ability to differentiate the action, this allows clients to stop relying on simulating clicks themselves to directly target a descendant. This avoids problems caused by obscured web elements, obscured browser windows and other weird screen coordinate issues. It thus fixes several problems reported by NVDA screen reader users. Differential Revision: https://phabricator.services.mozilla.com/D144252 |
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