[dolphin] [Bug 506161] New: Clicking folder icon in location bar does nothing when clicked if the folder is empty

[Michael Schmidt]

https://bugs.kde.org/show_bug.cgi?id=506161

            Bug ID: 506161
           Summary: Clicking folder icon in location bar does nothing when
                    clicked if the folder is empty
    Classification: Applications
           Product: dolphin
      Version First 24.12.3
       Reported In:
          Platform: Kubuntu
                OS: Linux
            Status: REPORTED
          Severity: minor
          Priority: NOR
         Component: bars: location
          Assignee: dolphin-bugs-null at kde.org
          Reporter: mitchi5000.ms at googlemail.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

SUMMARY
With the "Show full path in location bar" option enabled, the location will
display a little icon before each folder name in the path. Clicking the item is
supposed to show all sub folders inside the clicked folder for easy navigation.
However, if the folder is empty, clicking the icon does nothing. There is no
feedback at all. This is confusing, because the icon is visually advertised as
a button, so there is an expectation that it does *something* when clicked.

This problem is especially visible when opening an archive as a folder.
Normally, all folders in the path displayed in the location bar have sub
folders, except for the last one of course. This is not the case when opening
an archive as a folder, which makes it easier to encounter this issue, because
there is an expectation that clicking the icon does what it usually does.

STEPS TO REPRODUCE
1. Enable the "Show full path in location bar" option (Settings > Interface >
Status & Location bars) and the "Open Archives as folders" options (Settings >
View > General).
2. Create a new archive in an otherwise empty folder.
3. Open the archive as a folder in Dolphin.
4. Click on the icon of the folder containing the archive.

OBSERVED RESULT
Nothing happens. There is no feedback at all. Nothing opens, there is no sound,
the button doesn't change from its hover state, the cursor stays the same. It's
like the user didn't click at all. 

EXPECTED RESULT
Something happens to give user feedback. I'm not sure what. Some ideas might
be:
- Briefly show a tooltip saying "This folder contains no sub folders."
- Show the little context menu folder with sub folders show, but have it
contain a single disabled entry called "(empty)".
- Navigate to the click folder as if clicking on its name. This might be
surprising to users.

SOFTWARE/OS VERSIONS
Operating System: Kubuntu 25.04
KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.12.0
Qt Version: 6.8.3

ADDITIONAL INFORMATION
I encountered this issue on my laptop. Since it's harder to aim the cursor with
a the track pad, I accidentally clicked the folder icon and I was really
confused when absolutely nothing happened. I clicked about 5 more times before
I moved the mouse to check whether Dolphin crashed because it just didn't
respond.

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