'Manage resources' window cannot be closed when the session has ended

Observed behavior

When coach closes the browser and turns off the device while on the (full screen) Manage resources page for lessons, it is not possible to close that page with the X close button in the upper left corner. Since the session is closed on a full screen window that does not have the user menu, there is no way to access the Sign in link. Refreshing the page does not change anything, and the only way out seems to be manually editing the URL, which is not an ideal solution for non tech-savvy users. Browser Back button might work, but if they were navigating deep and long through the channels while looking for resources in that window, it still would require several clicks.

As a minimal fix it should be possible to close that window with the X close button in the upper left corner, and have a visible option to arrive to the Sign in page.

I’m also wondering whether was there a reason not to implement an automatic redirect to the Sign in page every time the browser is reopened on a page that requires a running session, but that session has ended? Even when the users find themselves on this Did you forget to sign in? page, and path to signing in is clear, they still have to a) open the user menu and b) click on the Sign in link anyway. I’m just wondering why not spare them those two clicks also?

Expected behavior

Closing the full screen window should work properly.

User-facing consequences

User is trapped and has no visible way to sign in and use Kolibri.

Errors and logs

Steps to reproduce

1. Sign in as coach and enter the Manage resources page on a lessons or quizzes. Don’t press the <kbd>Finish</kbd> button.
2. Close the browser and shut down the device.
3. Restart the device, Kolibri, and reopen the browser.
4. Try to close the Manage resources page with the X close button in the upper left corner.

Context

• Kolibri version: current release-v0.12.x dev branch
• Operating system: Ubuntu 18.04
• Browser: both FF & Chrome

cc @indirectlylit @jonboiser Tentative milestone set to upcoming patch…?

[jonboiser]

Sometimes the label next to the “X” is missing because the API to fetch that data requires authorization also (e.g. class names, user names, etc.). So maybe just show the normal toolbar for the plugin (no immersive toolbar), because it’s hard to know ahead of time which pages this might happen to to code in a placeholder.

[indirectlylit]

I think we should do two things:

1. When the AuthMessage is being shown inside a full-screen modal, the ‘X’ button should redirect people to the sign-in page. That will address this issue.
2. Add a new sign-in link and post-sign-in redirect behavior: https://github.com/learningequality/kolibri/issues/5892