Accepts the current text and rebuilds the parts widget.

def acceptEdit( self ):
        """
        Accepts the current text and rebuilds the parts widget.
        """
        
        if ( self._partsWidget.isVisible() ):
            return False
        
        use_completion = self.completer().popup().isVisible()
        completion     = self.completer().currentCompletion()
        
        self._completerTree.hide()
        self.completer().popup().hide()
        
        if ( use_completion ):
            self.setText(completion)
        else:
            self.rebuild()
            
        return True