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com.vaadin.flow.component.spreadsheet.

Class SpreadsheetUtil

    • Method Summary

      All Methods
      Modifier and Type Method Description
      static boolean cellContainsDate​(org.apache.poi.ss.usermodel.Cell cell)

      Determines whether the given cell contains a date or not.

      static List<org.apache.poi.ss.util.CellReference> getAllReferencedCells​(String formula, Spreadsheet spreadsheet, boolean includeHiddenCells)

      This function returns all the cells that the given formula references.

      static String getColHeader​(int columnIndex)

      Generates the column header for column with the given index

      static int getColHeaderIndex​(String header)

      Returns the column index for the column with the given header.

      static int getColumnIndexFromKey​(String key)

      Returns the column index for the given Cell key.

      static int getFirstVisibleSheetPOIIndex​(org.apache.poi.ss.usermodel.Workbook workbook)

      Returns the POI index of the first visible sheet (not hidden or very hidden).

      static int getNumberOfVisibleSheets​(org.apache.poi.ss.usermodel.Workbook workbook)

      Returns the number of visible sheets (not hidden or very hidden) in the given Workbook.

      static org.apache.poi.ss.util.CellRangeAddress getRangeForReference​(String formula, Spreadsheet spreadsheet, boolean includeHiddenCells)

      evaluate the formula (which may just be a single cell or range string) and find the bounding rectangle for the referenced cells.

      static int getRowFromKey​(String key)

      Returns the row index for the given Cell key.

      static boolean isCellInRange​(org.apache.poi.ss.util.CellReference cellReference, org.apache.poi.ss.util.CellRangeAddress cellRange)

      Determines whether the given cell is within the given range.

      static boolean needsLeadingQuote​(org.apache.poi.ss.usermodel.Cell cell)

      Determine if the given cell content should be displayed with a leading quote in both cell editor and formula bar

      static Double parseNumber​(String cellContent, Locale locale)  
      static Double parseNumber​(org.apache.poi.ss.usermodel.Cell cell, String value, Locale locale)  
      static Double parsePercentage​(String cellContent, Locale locale)

      Tries to parse the given String to a percentage.

      static org.apache.poi.ss.util.CellReference relativeToAbsolute​(Spreadsheet sheet, org.apache.poi.ss.util.CellReference cell)  
      static String toKey​(int col, int row)

      Translates cell coordinates to a cell key used to identify cells in the server-client communication.

      static String toKey​(org.apache.poi.ss.usermodel.Cell cell)

      Translates cell coordinates from the given Cell object to a cell key used to identify cells in the server-client communication.

    • Constructor Detail

      • SpreadsheetUtil

        public SpreadsheetUtil()
    • Method Detail

      • toKey

        public static final String toKey​(int col,
                                         int row)

        Translates cell coordinates to a cell key used to identify cells in the server-client communication.

        Parameters:

        col - Column index, 1-based

        row - Row index 1-based

        Returns:

        Cell key

      • toKey

        public static final String toKey​(org.apache.poi.ss.usermodel.Cell cell)

        Translates cell coordinates from the given Cell object to a cell key used to identify cells in the server-client communication.

        Parameters:

        cell - Cell to fetch the coordinates from

        Returns:

        Cell key

      • cellContainsDate

        public static boolean cellContainsDate​(org.apache.poi.ss.usermodel.Cell cell)

        Determines whether the given cell contains a date or not.

        Parameters:

        cell - Cell to examine

        Returns:

        true if the cell contains a date

      • relativeToAbsolute

        public static org.apache.poi.ss.util.CellReference relativeToAbsolute​(Spreadsheet sheet,
                                                                              org.apache.poi.ss.util.CellReference cell)
      • getColHeader

        public static String getColHeader​(int columnIndex)

        Generates the column header for column with the given index

        Parameters:

        columnIndex - Index of column, 1-based

        Returns:

        Generated column header

      • getColHeaderIndex

        public static int getColHeaderIndex​(String header)

        Returns the column index for the column with the given header.

        Parameters:

        header - Column header

        Returns:

        Index of column, 1-based

      • isCellInRange

        public static boolean isCellInRange​(org.apache.poi.ss.util.CellReference cellReference,
                                            org.apache.poi.ss.util.CellRangeAddress cellRange)

        Determines whether the given cell is within the given range.

        Parameters:

        cellReference - Target cell reference

        cellRange - Cell range to check

        Returns:

        true if the cell is in the range

      • getFirstVisibleSheetPOIIndex

        public static int getFirstVisibleSheetPOIIndex​(org.apache.poi.ss.usermodel.Workbook workbook)

        Returns the POI index of the first visible sheet (not hidden or very hidden). If no sheets are visible, returns 0. This is not be possible at least in Excel, but unfortunately POI allows it.

        Parameters:

        workbook - Workbook to get the sheets from

        Returns:

        Index of the first visible sheet, 0-based

      • getNumberOfVisibleSheets

        public static int getNumberOfVisibleSheets​(org.apache.poi.ss.usermodel.Workbook workbook)

        Returns the number of visible sheets (not hidden or very hidden) in the given Workbook.

        Parameters:

        workbook - Workbook to get the sheets from

        Returns:

        Number of visible sheets

      • getColumnIndexFromKey

        public static int getColumnIndexFromKey​(String key)

        Returns the column index for the given Cell key.

        Parameters:

        key - Cell key

        Returns:

        Column index of cell, 1-based

      • getRowFromKey

        public static int getRowFromKey​(String key)

        Returns the row index for the given Cell key.

        Parameters:

        key - Cell key

        Returns:

        Row index of cell, 1-based

      • parsePercentage

        public static Double parsePercentage​(String cellContent,
                                             Locale locale)

        Tries to parse the given String to a percentage. Specifically, checks if the String ends with the '%' character, and the rest can be parsed to a number.

        Parameters:

        cellContent - The string to be parsed

        locale - The current locale, used for number parsing.

        Returns:

        the number as a decimal if it can be parsed; e.g. 42% returns 0.42 and 0.42% returns 0.0042. Returns null if the number can't be parsed as a decimal.

      • parseNumber

        public static Double parseNumber​(org.apache.poi.ss.usermodel.Cell cell,
                                         String value,
                                         Locale locale)
      • needsLeadingQuote

        public static boolean needsLeadingQuote​(org.apache.poi.ss.usermodel.Cell cell)

        Determine if the given cell content should be displayed with a leading quote in both cell editor and formula bar

        Parameters:

        cell - The cell to be checked

        Returns:

        true if the cell contains a string with the "quotePrefix" style set. Note that for Excel 97 file format, returns true for every string.

      • getRangeForReference

        public static org.apache.poi.ss.util.CellRangeAddress getRangeForReference​(String formula,
                                                                                   Spreadsheet spreadsheet,
                                                                                   boolean includeHiddenCells)

        evaluate the formula (which may just be a single cell or range string) and find the bounding rectangle for the referenced cells.

        Parameters:

        formula -

        spreadsheet -

        includeHiddenCells -

        Returns:

        CellRangeAddress bounding the evaluated result

      • getAllReferencedCells

        public static List<org.apache.poi.ss.util.CellReference> getAllReferencedCells​(String formula,
                                                                                       Spreadsheet spreadsheet,
                                                                                       boolean includeHiddenCells)

        This function returns all the cells that the given formula references. You can optionally filter out all the hidden rows from the list honoring filtering of charts based on SpreadsheetTable filter settings.

        Parameters:

        formula - The formula to find referenced cells for

        spreadsheet - Spreadsheet to operate on

        includeHiddenCells - true to include cells residing in hidden rows or columns, false to omit them