Ensure left search results panel is always visible.

[mbien]

initialize divider position with a minimal value. This will always reset the value to at least 250 even if it is changed by the user to less.

fixes #8064

I could reproduce this sometimes with

• fresh user conf (no divider location stored)
• search something in an empty folder (e.g favorites view; ensures that the search finishes fast with no results)

I believe what happens in this case is that the divider isn't initialized (which is fine by itself) but the computed width of the left panel is 0 for some reason too (which is not ok).

[matthiasblaesing]

Looks sane to me.

[matthiasblaesing]

And this was nagging at me: There is also BasicReplaceResultsPanel. This looks as if it should get the same treatment.

[mbien]

And this was nagging at me: There is also BasicReplaceResultsPanel. This looks as if it should get the same treatment.

Good catch - I'll take a look. Oh boy, I really hate copy pasted code. Will try to deduplicate this a bit if possible.

[mbien]

@matthiasblaesing added the change to the first commit. The second commit refactors the two panels (BasicSearchResultsPanel extends now BasicAbstractResultsPanel) to make it more DRY. Let me know what you think about the refactoring.

[matthiasblaesing]

We might have to bikeshed the 250px value at some point, but as it is saved, it should be ok. So makes sense to me. Thank you.