[dolphin] [Bug 477208] New: Type-ahead searching should search downwards, not from top

[John Veness]

https://bugs.kde.org/show_bug.cgi?id=477208

            Bug ID: 477208
           Summary: Type-ahead searching should search downwards, not from
                    top
    Classification: Applications
           Product: dolphin
           Version: 23.08.3
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: view-engine: details mode
          Assignee: dolphin-bugs-null at kde.org
          Reporter: john.kde at pelago.org.uk
                CC: kfm-devel at kde.org
  Target Milestone: ---

Created attachment 163277
  --> https://bugs.kde.org/attachment.cgi?id=163277&action=edit
A screen recording of Dolphin, where I expand the Tech folder, then press M,
expecting to go down to the first file starting with M in the Tech folder, but
it actually highlights the Media folder

SUMMARY
I generally use Dolphin in Details view mode, using arrow keys to navigate and
expand/unexpand subfolders. If I press a letter key, intending for Dolphin to
scroll down to the entry that starts with that letter, Dolphin will start from
the top of the list, not from the "current" folder as I think most would
expect.

STEPS TO REPRODUCE
Also see the attached recording, which probably explains the problem better.

1. Have a folder structure like below, where indentations show files within
folders
Top folder
   AAA folder
      AAA file
      BBB file
      CCC file
   BBB folder
      AAA file
      BBB file
      CCC file
   CCC folder
      AAA file
      BBB file
      CCC file
2. Open "Top folder" in Dolphin in Details view
3. Use keyboard arrow keys to go down and expand (press right arrow) the CCC
folder, so it looks like:
AAA folder
BBB folder
CCC folder
   AAA file
   BBB file
   CCC file
4. Note that the "CCC folder" is currently highlighted
5. Press the B key on the keyboard

OBSERVED RESULT
The "BBB folder" is highlighted.

EXPECTED RESULT
The "BBB file" within the "CCC folder" is highlighted.

SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20231116
KDE Plasma Version: 5.27.9
KDE Frameworks Version: 5.112.0
Qt Version: 5.15.11
Kernel Version: 6.6.1-1-default (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i5-7200U CPU @ 2.50GHz
Memory: 15.5 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 620
Manufacturer: HP
Product Name: HP ProBook 450 G4

ADDITIONAL INFORMATION
To put it another way, my expectation is that typeahead should work a bit like
searching in a text editor, namely that it would search downwards from the
current cursor position (wrapping around if necessary), not always searching
from the beginning of the document or folder.

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