[Dash] Scope loses context when you go back from preview

[Alan Pope 🍺🐧🐱 🦄]

On mako #269
In applications scope, scroll down and expand up the section for "Available" or "My Apps".

For "Available" spot a few apps to install. Pick one to get to the preview. Click "Install".
For "My Apps" spot a few apps to de-install. Pick one (long press) to get the preview. Click "Uninstall".

Once install/uninstall is done, press the back button at the top.

Note that in both cases you get returned to where you were in the scope then the scope immediately flips up to the top.

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Solution

By default, when the user goes back from a preview, they are returned to the surfacing mode in the same place. However if those results are now invalid (due to action on the preview), the scope is reloaded.

This problem is now mitigated by:
- Separating out installed apps and available apps into two scopes (installed plus store)
- in this particular use case, we also plan to provide a shortcut to uninstalling using a contextual menu on long press.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Michal Hruby (mhr3)]

This is expected, as installing/uninstalling an app invalidates the scope result set.

[Michał Sawicz (saviq)]

On one hand I'm inclined to mark this as invalid for unity8, on the other, though, I know that I'd rather it just refresh what actually changed, but that's a much bigger topic, involving scopes as well as the scopes api, or at least the scopes QML plugin.

[Alan Pope 🍺🐧🐱 🦄 (popey)]

It may be technically expected, but from a user point of view it's pretty horrid to be dumped back at the top, many swipes away from where you started.

[Michal Hruby (mhr3)]

Just a note, even if we did diffs of the resultsets, if it would take more than ~250ms to get *all* the results, we'd have the same behaviour. (and that's pretty likely considering the need to do an internet query)

[Dave Morley (davmor2)]

This seems to be fixed with the very latest rendition of scopes, So I'm marking it invalid, please reopen if this still effects you