openSUSE / agama / 9677636848

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github

fix: set installer language and keyboard layout (#1375)

## Problem

The installer language/keymap selection does not work properly. Although
most of the problems have existed for quite some time, the new UI makes
them more evident.

## Solution

* Stop using signals to update the backend language. Now, there is an
explicit `SetLocale` method, so we know exactly when it is finished.
* Use a proper form (in a popup) to change the language/keymap. You need
to click the "Accept" button to apply the changes.
* Properly reload the screen after applying the changes. Disable the
"Accept/Cancel" buttons while performing the changes.
* Display a progress screen while re-reading the repositories (as it can
take quite some time).
* Move the "Download logs" to the sidebar.

## Testing

- Updated unit tests.
- Tested manually.

## Known problems

- Some unwanted flickering.

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