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There's a place in my app where the user should insert an URL and I thought it would be nice if the app remembered last n URLs for the user and then tries to autocomplete the URL with the ones in the history (like Internet Explorer does).

After reading about the different input widgets, I thought that KHistoryCombo did everything I wanted. The problem is that at the moment, it does nothing of all this!

First I thought that the only thing I had to do was to set the insertionPolicy property to AtTop, but nothing happened.

Then I supposed that maybe I had to add the string manually, which I find a bit strange, because if the Widget is called a KHistoryCombo I think it should handle adding the strings to the history itself. The problem is that I didn't find any decent signal to connect the addToHistory() funcion with. I tested it with returnPressed and that works, but I think that the most logical moment to add the string to the history would be when the widget loses focus.

So I went off to find a "focusLost()" signal, but I can't seem to find one! The only thing I found was something about re-implementing the focusOut() event, but I believe that means I have to subclass the widget?

So now I'm asking:
Do I really have to (1) subclass the widget to capture when the user leaves the KHistoryCombo, and (2) then add the string "manually" with the addToHistory() function, and (3) when the app is closed, write the code to save the list of strings in the config?
If 1-3 are true, why is the widget called a KHistoryCombo, when all of the "History" code has to be written manually?

Surely I must be missing something here...