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Re: [tor-bugs] #23240 [Applications/Tor Launcher]: do not show progress bar at zero when bootstrap progress is greater than zero



#23240: do not show progress bar at zero when bootstrap progress is greater than
zero
---------------------------------------+------------------------------
 Reporter:  mcs                        |          Owner:  brade
     Type:  defect                     |         Status:  needs_review
 Priority:  Medium                     |      Milestone:
Component:  Applications/Tor Launcher  |        Version:
 Severity:  Normal                     |     Resolution:
 Keywords:  TorBrowserTeam201708R      |  Actual Points:
Parent ID:                             |         Points:
 Reviewer:                             |        Sponsor:  Sponsor4
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Comment (by mcs):

 Replying to [comment:2 dcf]:
 > comment:1 looks like an effective workaround, but I suspect it can be
 addressed in a more direct way. I think the root of the problem is that
 progressMeter.value is reset to 0 every time the progress bar dialog is
 shown. I added some logging:
 > ...
 > Notice that when initDialog is called the second time, meter.value is
 reset to 0, rather than remembering its previous value of 90. Maybe this
 is because [https://gitweb.torproject.org/tor-
 launcher.git/tree/src/chrome/content/network-settings.js?h=0.2.12.3#n1252
 openProgressDialog] creates a brand new dialog from scratch? Perhaps
 instead, it could keep the same dialog in memory, and show or hide it as
 appropriate, so that meter.value retains its state.

 Thanks for looking at this problem. Kathy and I considered but decided
 against caching the current value.  We think it is more elegant — and
 safer — for Tor Launcher to be stateless with respect to the progress
 value.  For example, even if tor needs to reset its notion of progress due
 to a restart or because of radical reconfiguration, the Tor Launcher
 progress bar will never show an incorrect value.

 > I ''don't'' think the usability problem from #22266 is an initial jump
 from 0% to 80%. That's normal and expected with an up-to-date consensus
 cache.

 Agreed, although I think it is better to hide that jump (progress isn't
 really zero so why show it as zero?)

 Other opinions?

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23240#comment:4>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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