1204479 - Add an option to replace the ascending progress beeps with percentage announcements

Status: RESOLVED INVALID

(Firefox for iOS :: Browser, enhancement)

Description

[Marco Zehe (:MarcoZ)]

As first feedback from a user in New Zealand who is both blind and has also a hearing disability, it was suggested that we give VoiceOver users an option to replace the ascending progress beeps with percentage announcements while a page is loading. The reason is that for some, especially the high-pitch tones might be very sharp to their ears. The steady heartbeat-like sound we also make was no reason for complaint.

So I suggest we do the following:

1. Add an option to Settings that allows to configure whether the user wants to hear ascending progress beeps or spoken percentage values. Progress beeps should be the default upon new installs.

2. If the user has selected to hear percentages, use the UIAccessibilityAnnouncementNotification to speak certain percentages during page loads. I would go with 20%, 40%, 60%, 80%, and 90%. The 100% is not necessary since the page load is indicated anyway. They can interrupt each other, so we don't need to wait for the finishing of the previous announcement of that kind.