Sets the number of pages that this widget holds.
        
        :param      pageCount | <int>

def setPageCount( self, pageCount ):
        """
        Sets the number of pages that this widget holds.
        
        :param      pageCount | <int>
        """
        if ( pageCount == self._pageCount ):
            return
        
        pageCount = max(1, pageCount)
        
        self._pageCount = pageCount
        self._pagesSpinner.setMaximum(pageCount)
        self._pagesLabel.setText('of %i for ' % pageCount)
        
        if ( pageCount and self.currentPage() <= 0 ):
            self.setCurrentPage(1)
        
        elif ( pageCount < self.currentPage() ):
            self.setCurrentPage(pageCount)
        
        if ( not self.signalsBlocked() ):
            self.pageCountChanged.emit(pageCount)
        
        self._prevButton.setEnabled(self.currentPage() > 1)
        self._nextButton.setEnabled(self.currentPage() < pageCount)