Hello, I don't think I have merge permissions. You can merge for me. Thank you!

I have tested a few things but could not manage to get the tooltip to show everywhere without causing issues with the rest of the widgets. Putting the tooltip on top (with the property z greater than 0) prevents underlying widgets from receiving mouse movements, thus making them look weird. I do not have any improvement for now before merging.

In D17611#377731, @sredman wrote:

This is cool! But kind of finicky:

When I drop an item into the plasmoid on my desktop, it offers to let me do things to the desktop with the file, see:

I use the plasmoid from the system tray. It offers me the tooltip, but it is not possible to drag and drop a file into the plasmoid on the system tray. The behavior I was expecting was to be able to drag the file-to-share over the KDE Connect icon in the system tray, hover for a second, and the system tray would expand so I could drop my file into the plasmoid

Here is a screenshot of the added tooltip.

I have succeeded in implementing this feature based mostly on what is done in the quickshare plasmoid. So far I can transfer one or multiple files to the device by dropping them on the list item in the plasmoid. This area covers the name of the device, the buttons (ring, manual file transfer, device browsing) and the notification area without interfering with their current function.