[PATCH] KFileDialog overwrite confirmation

Rafael Fernández López ereslibre at kde.org
Sat Jul 12 14:42:27 BST 2008


Some comments: (and why you can't compile it):

- You added a method declaration to KAbstractFileWidget which hasn't got an 
implementation. On KFileDialog, w is declared on KFileDialogPrivate as a 
"KAbstractFileWidget* w;"; so you get a call to a non existant method body.

- In case you add a body, we are screwed. Since this method is not virtual, 
and the pointer said before is a KAbstractFileWidget, I don't know if it will 
compile. However, if it does, always the KAbstractFileWidget implementation 
will be called.


All new methods are lacking a "@since 4.2".


As I pointed you before on the C++ binary compatibility issues there are ways 
to "workaround" this. You can use signals and slots for making this "fake 
virtual", and add a very BIG warning to fix this for KDE 5.

You can add a signal on the abstract class that will be emitted on the 
setConfirmOverwrite method from KAbstractFileWidget. Then on the other 
implementations, you can connect that signal to their own slots, so they 
provide a private implementation for such a reaction. You don't need to 
"rewrite" setConfirmOverwrite on the inherited classes, just connecting to the 
signal that KAbstractFileWidget exports. It is important from my POV to mark 
this signal as @internal.

Rafael Fernández López.
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