1804351 - Mail error pages need a visual overhaul

Status: NEW

(Thunderbird :: General, enhancement)

Description

[Geoff Lankow (:darktrojan)]

We need to stop using DisplayHTMLInMessagePane/DisplayURIInMessagePane because it doesn't work a lot of the time and will stop working altogether when the new 3-pane tab is used. I'll deal with that in a separate bug but while looking into it I decided to file this bug.

Our error pages should look the same as the toolkit error pages (visit about:neterror?e=dnsNotFound in Firefox to see one easily). The pages I have in mind are:

• about:newserror (newsError.xhtml) which is almost right but it links to a non-existent stylesheet and the classes/IDs need updating to match
• The offline message created here should exist as a real .xhtml page instead of being constructed dynamically.
• The S/MIME encryption failure message created here has the same problem.

It should be possible to open the pages (once they are real pages) in a content tab for checking the appearance.

Comment 1

[Alessandro Castellani [:aleca]]

How often something like this happens?
Can we defer this to the polish stage with a low priority?

Comment 2

[Geoff Lankow (:darktrojan)]

Depends on the user's config. The offline one could happen quite often. It is a low priority but I'm working on the offline message today and I'm going to make it really ugly until this bug gets fixed.

Comment 3

[Thomas D. (:thomas8)]

Adding [Supernova] to Whiteboard. 20230406_1102