Examples of org.zkoss.zss.model.Book.removeSheetAt()

            final int sheetCount = book.getNumberOfSheets();
            if (sheetCount == 1) {
              Messagebox.show("A workbook must contain at least one visible worksheet");
            }
            final String delSheetName = _sheet.getSheetName(); //must getName before remove
            book.removeSheetAt(index);
            final int newIndex =  index < (sheetCount - 1) ? index : (index - 1);
            final String newSheetName = book.getSheetName(newIndex);
            BookHelper.notifyDeleteSheet(ref, new Object[] {delSheetName, newSheetName});
          }
        }

      int sheetCount = book.getNumberOfSheets();
      if (sheetCount == 1)
        return -1;
      
      int index = book.getSheetIndex(spreadsheet.getSelectedSheet());
      book.removeSheetAt(index);
      sheetCount = book.getNumberOfSheets();
      
      if (index < sheetCount) {
        //shift right
        return index;

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