SUMMARY At the moment, open a folder in a new window or a new folder requires two mouse clicks (the right-click to open the context menu and a left-click to select the desired option): shortcuts for these actions could be very helpful when browsing multiple folders at same time. The decision to suggest ctrl+click to open the folder in a new tab and shift+click to open it in a new windows comes from the shortcuts used by most web browsers (at least Firefox, Chrome and Chromium): in this way the user will be already familiar with these. I also suggest to add an option to disable and/or re-map these shortcut, but my idea is to enable them by default. STEPS TO REPRODUCE 1. Click on a folder in Dolphin in order to open it, while keep pressed ctrl or shift key OBSERVED RESULT The folder opens in the same window and tab it was before EXPECTED RESULT If the ctrl key is pressed during the click the folder should be opened in a new tab of the same dolphin window, otherwise, if the shift key is pressed, a new dolphin window should be opened showing the folder that has been clicked. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Manjaro (Stable, up-to-date on 2020/6/6) (Kernel 5.6.15) (available in About System) KDE Plasma Version: 5.16.5 KDE Frameworks Version: 5.70.0 Qt Version: 5.14.2
If you middle-click on a folder, the folder opens in a new tab.
(In reply to Yash Tiwari from comment #1) > If you middle-click on a folder, the folder opens in a new tab. It is still uncomfortable on a laptop (especially if you need to enable a virtual middle-click through some other means) and, I think, does not provide a way to open the folder in a new window (that is the feature I would use the most), but thanks anyway for showing me this feature.
If you set ctrl + click for open in new tab, then how could you select several elements? It requires to click on elements while ctrl is pressed.