KParts, widget() and multiple views in katepart

[Adam Treat]

Currently Katepart does not implement widget() when the part is a ReadOnly.  

I think this is wrong as it makes the documentation for KParts::widget() into 
a liar.  The solution is simple, katepart can call KParts::setWidget() on the 
KTextEditor::Document::activeView().  Unfortunately, this introduces a 
problem because KParts insists on handling the deletion of the part if the 
widget is deleted.

So, my solution is to introduce a protected function/variable in KParts 
like 'handleWidgetDeletion' that setWidget() will honor.

Sound ok?

Adam