[tbb-bugs] #27111 [Applications/Tor Browser]: TBA: Implement about:tor

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#27111: TBA: Implement about:tor
-------------------------------------------------+-------------------------
 Reporter:  igt0                                 |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_revision
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-mobile, TBA-a2,                  |  Actual Points:
  TorBrowserTeam201810R                          |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------
Changes (by sysrqb):

 * status:  needs_review => needs_revision


Comment:

 Partially unrelated, but ideally, when the new tb-manual is available for
 TBA, then we'll probably need to adjust the URL construction within
 `src/chrome/content/aboutTor/aboutTor-content.js:onLocaleChange()`. (I
 guess this is similar to option 1 in #20739). We'll need a new mockup for
 this, too.

 ---

 In `src/chrome/content/torbutton.js:torbutton_init()`:
 {{{
 +    if (torbutton_is_mobile()) {
 +        torbutton_abouttor_message_handler.updateAllOpenPages();
 +    }
 +
 }}}
 Can you add a comment about why this is needed only on mobile?

 ----


 We should set the homepage as `about:tor`, too. Fennec doesn't respect
 `browser.startup.homepage`, so we must hardcode it :/

 The easiest option may be modifying
 `mobile/android/base/java/org/mozilla/gecko/AboutPages.java:HOME`.
 Unfortunately, this won't work well until torbutton is integrated and
 there's no longer the need of restarting the app before torbutton fully
 installs. Another option is adding in a check for
 `browser.startup.homepage`, and that overrides `AboutPages:HOME`.

 ----

 This patch doesn't provide the same view as the mockup with the virtual
 keyboard opened (right-side of
 https://trac.torproject.org/projects/tor/attachment/ticket/25696/24309%20-%20TBA%20-%20Welcome%20Page.png).
 This'll require a tor-browser patch, as well, because Fennec automatically
 opens the ActivityStream HomePager every time the URL bar is focused.

 ----

 Overall, I don't see any problems with this torbutton patch. This should
 be reviewed by someone else (in particular someone with more knowledge of
 this code) - making sure this doesn't break anything on desktop. I'm
 setting to needs_revision because I think explaining why about:tor
 requires an explicit signal on mobile  during init() is helpful for
 reviewing this.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27111#comment:7>
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