Processes resize events on the thumbnail widget to update the group
        items to force a proper sizing.
        
        :param      object | <QObject>
                    event  | <QEvent>
        
        :return     <bool> | consumed

def eventFilter( self, object, event ):
        """
        Processes resize events on the thumbnail widget to update the group
        items to force a proper sizing.
        
        :param      object | <QObject>
                    event  | <QEvent>
        
        :return     <bool> | consumed
        """
        if ( event.type() == event.Resize and \
             self.currentMode() == XOrbBrowserWidget.Mode.Thumbnail and \
             self.isGroupingActive() ):
            size = QSize(event.size().width() - 20, 22)
            for row in range(object.count()):
                item = object.item(row)
                if ( isinstance(item, GroupListWidgetItem) ):
                    item.setSizeHint(size)
        return False