virtualizing children
virtualizing children
- Subject: virtualizing children
- From: Felipe Heidrich <email@hidden>
- Date: Thu, 05 Jun 2014 14:57:55 -0700 (PDT)
Hi,
I have a panel with a very large list of children, returning it back in accessibilityAttributeValue+NSAccessibilityChildrenAttribute is too slow in my case (specially due to the process of culling ignored elements, using NSAccessibilityUnignoredChildren).
I know about accessibilityArrayAttributeCount and accessibilityArrayAttributeValues, which I used to virtualize, for example, NSAccessibilityRowsAttribute.
I also noticed that depending on the element's role, accessibilityArrayAttributeCount/accessibilityArrayAttribute are used to query NSAccessibilityChildrenAttribute.
But most of the time VoiceOver requests the entire children array using accessibilityAttributeValue.
What I would like is to VoiceOver to always use accessibilityArrayAttributeCount/accessibilityArrayAttribute, so that I never need to return the entire children array.
Is that possible ?
I have also investigated NSAccessibilityVisibleChildrenAttribute, but as far as I can tell VoiceOver never sends that.
Is that any other way to virtualize the children ?
Thank you
Felipe
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