Daneel
15a7c927f4
v6 patch: fix VoiceOver double cursor + add typing echo
Fixes:
1. accessibilityFrame now returns view frame (not cursor rect) - fixes
VoiceOver drawing duplicate cursor overlay
2. Added NSAccessibilityValueChangedNotification - enables VoiceOver
typing echo (character-by-character feedback when typing)
3. Cursor position exposed only via accessibilityBoundsForRange:
Full VoiceOver text protocol retained (accessibilityValue,
accessibilitySelectedText, accessibilityStringForRange:, etc).