Package hdf.view

Class Tools


  • public final class Tools
    extends Object
    The "Tools" class contains various tools for HDF files such as jpeg to HDF converter.
    Version:
    2.4 9/6/2007
    Author:
    Peter X. Cao
    • Constructor Summary

      Constructors 
      Constructor Description
      Tools()  
    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static boolean applyBitmask​(Object theData, BitSet theMask, ViewProperties.BITMASK_OP op)
      Apply bitmask to a data array.
      static Object autoContrastApply​(Object dataIN, Object dataOUT, double[] params, double[] minmax, boolean isUnsigned)
      Apply autocontrast parameters to the original data in place (destructive)
      static int autoContrastCompute​(Object data, double[] params, boolean isUnsigned)
      Computes autocontrast parameters (gain equates to contrast and bias equates to brightness) for integers.
      static int autoContrastComputeMinMax​(Object data, double[] minmax)
      Computes autocontrast parameters by
      static int autoContrastConvertImageBuffer​(Object src, byte[] dst, boolean isUnsigned)
      Converts image raw data to bytes.
      static File checkNewFile​(String path, String ext)
      Check and find a non-exist file.
      static boolean checkValidJavaArrayIndex​(long value)
      Since Java does not allow array indices to be larger than int type, check the given value to see if it is within the valid range of a Java int.
      static int computeStatistics​(Object data, double[] avgstd, Object fillValue)
      Computes mean and standard deviation of a data array
      static void convertImageToHDF​(String imgFileName, String hFileName, String fromType, String toType)
      Converts an image file into HDF4/5 file.
      static BigInteger convertUINT64toBigInt​(Long l)
      Converts unsigned 64-bit integer data to a BigInteger since Java does not have unsigned types.
      static byte[][] createGrayPalette()
      Creates the gray palette of the indexed 256-color table.
      static byte[][] createGrayWavePalette()
      Creates the gray wave palette of the indexed 256-color table.
      static Image createIndexedImage​(BufferedImage bufferedImage, byte[] imageData, byte[][] palette, long w, long h)
      Creates a RGB indexed image of 256 colors.
      static byte[][] createNaturePalette()
      Creates the nature palette of the indexed 256-color table.
      static FileFormat createNewFile​(String filename, String dir, String type, List<FileFormat> openFiles)
      Create a new HDF file with default file creation properties
      static byte[][] createRainbowPalette()
      Creates the rainbow palette of the indexed 256-color table.
      static byte[][] createReverseGrayPalette()
      Creates the reverse gray palette of the indexed 256-color table.
      static Image createTrueColorImage​(byte[] imageData, boolean planeInterlace, long w, long h)
      Creates a true color image.
      static byte[][] createWavePalette()
      Creates the wave palette of the indexed 256-color table.
      static int findDataDist​(Object data, int[] dataDist, double[] minmax)
      Finds the distribution of data values
      static int findMinMax​(Object data, double[] minmax, Object fillValue)
      Finds the min and max values of the data array
      static boolean getBinaryDataFromFile​(Object dataOut, String fileName, ByteOrder order)
      Reads data from a binary file into a buffer.
      static byte[] getBytes​(Object rawData, double[] minmax, long w, long h, boolean isTransposed, byte[] byteData)
      Convert an array of raw data into array of a byte data.
      static byte[] getBytes​(Object rawData, double[] minmax, long w, long h, boolean isTransposed, List<Number> invalidValues, boolean convertByteData, byte[] byteData)  
      static byte[] getBytes​(Object rawData, double[] minmax, long w, long h, boolean isTransposed, List<Number> invalidValues, boolean convertByteData, byte[] byteData, List<Integer> list)
      Convert an array of raw data into array of a byte data.
      static byte[] getBytes​(Object rawData, double[] minmax, long w, long h, boolean isTransposed, List<Number> invalidValues, byte[] byteData)  
      static byte[] getHDF5UserBlock​(String filename)
      Read HDF5 user block data into byte array.
      static boolean hasAlpha​(Image image)
      This method returns true if the specified image has transparent pixels.
      static boolean isHDF4​(String filename)
      look at the first 4 bytes of the file to see if it is an HDF4 file.
      static boolean isHDF5​(String filename)
      look at the first 8 bytes of the file to see if it is an HDF5 file.
      static boolean isNaNINF​(double val)
      Check if a given number if NaN or INF.
      static boolean isNetcdf​(String filename)
      look at the first 4 bytes of the file to see if it is a netCDF file byte[0]=67, byte[1]=68, byte[2]=70, byte[3]=1 or
      static void launchBrowser​(String url)
      Launch default browser for a given URL.
      static Object newInstance​(Class<?> cls, Object[] initargs)
      Create and initialize a new instance of the given class.
      static byte[][] readPalette​(String filename)
      read an image palette from a file.
      static void saveAsBinary​(DataOutputStream out, Object data, ByteOrder order)  
      static void saveImageAs​(BufferedImage image, File file, String type)
      Save a BufferedImage into an image file.
      static boolean setHDF5UserBlock​(String fin, String fout, byte[] buf)
      Write HDF5 user block data into byte array.
      static boolean showConfirm​(org.eclipse.swt.widgets.Shell parent, String title, String confMsg)
      Show an SWT Confirm dialog with the given message.
      static void showError​(org.eclipse.swt.widgets.Shell parent, String title, String errorMsg)
      Show an SWT error dialog with the given error message.
      static void showInformation​(org.eclipse.swt.widgets.Shell parent, String title, String infoMsg)
      Show an SWT Information dialog with the given message.
      static void showWarning​(org.eclipse.swt.widgets.Shell parent, String title, String warnMsg)
      Show an SWT Warning dialog with the given message.
      static String toBinaryString​(long v, int nbytes)
      Returns a string representation of the long argument as an unsigned integer in base 2.
      static String toBinaryString​(BigInteger v, int nbytes)  
      static BufferedImage toBufferedImage​(Image image)
      This method returns a buffered image with the contents of an image.
      static String toHexString​(long v, int nbytes)
      Returns a string representation of the long argument as an unsigned integer in base 16.
      static String toHexString​(BigInteger v, int nbytes)
      Returns a string representation of the BigInteger argument as an unsigned integer in base 16.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

    • Method Detail

      • convertUINT64toBigInt

        public static BigInteger convertUINT64toBigInt​(Long l)
        Converts unsigned 64-bit integer data to a BigInteger since Java does not have unsigned types.
        Parameters:
        l - The long value to convert to a BigInteger
        Returns:
        A BigInteger representing the unsigned value of the given long.
      • convertImageToHDF

        public static void convertImageToHDF​(String imgFileName,
                                             String hFileName,
                                             String fromType,
                                             String toType)
                                      throws Exception
        Converts an image file into HDF4/5 file.
        Parameters:
        imgFileName - the input image file.
        hFileName - the name of the HDF4/5 file.
        fromType - the type of image.
        toType - the type of file converted to.
        Throws:
        Exception - if a failure occurred
      • saveImageAs

        public static void saveImageAs​(BufferedImage image,
                                       File file,
                                       String type)
                                throws IOException
        Save a BufferedImage into an image file.
        Parameters:
        image - the BufferedImage to save.
        file - the image file.
        type - the image type.
        Throws:
        IOException - if a failure occurred
      • createGrayPalette

        public static final byte[][] createGrayPalette()
        Creates the gray palette of the indexed 256-color table.

        The palette values are stored in a two-dimensional byte array and arrange by color components of red, green and blue. palette[][] = byte[3][256], where, palette[0][], palette[1][] and palette[2][] are the red, green and blue components respectively.

        Returns:
        the gray palette in the form of byte[3][256]
      • createReverseGrayPalette

        public static final byte[][] createReverseGrayPalette()
        Creates the reverse gray palette of the indexed 256-color table.

        The palette values are stored in a two-dimensional byte array and arrange by color components of red, green and blue. palette[][] = byte[3][256], where, palette[0][], palette[1][] and palette[2][] are the red, green and blue components respectively.

        Returns:
        the gray palette in the form of byte[3][256]
      • createGrayWavePalette

        public static final byte[][] createGrayWavePalette()
        Creates the gray wave palette of the indexed 256-color table.

        The palette values are stored in a two-dimensional byte array and arrange by color components of red, green and blue. palette[][] = byte[3][256], where, palette[0][], palette[1][] and palette[2][] are the red, green and blue components respectively.

        Returns:
        the gray palette in the form of byte[3][256]
      • createRainbowPalette

        public static final byte[][] createRainbowPalette()
        Creates the rainbow palette of the indexed 256-color table.

        The palette values are stored in a two-dimensional byte array and arrange by color components of red, green and blue. palette[][] = byte[3][256], where, palette[0][], palette[1][] and palette[2][] are the red, green and blue components respectively.

        Returns:
        the rainbow palette in the form of byte[3][256]
      • createNaturePalette

        public static final byte[][] createNaturePalette()
        Creates the nature palette of the indexed 256-color table.

        The palette values are stored in a two-dimensional byte array and arrange by color components of red, green and blue. palette[][] = byte[3][256], where, palette[0][], palette[1][] and palette[2][] are the red, green and blue components respectively.

        Returns:
        the nature palette in the form of byte[3][256]
      • createWavePalette

        public static final byte[][] createWavePalette()
        Creates the wave palette of the indexed 256-color table.

        The palette values are stored in a two-dimensional byte array and arrange by color components of red, green and blue. palette[][] = byte[3][256], where, palette[0][], palette[1][] and palette[2][] are the red, green and blue components respectively.

        Returns:
        the wave palette in the form of byte[3][256]
      • readPalette

        public static final byte[][] readPalette​(String filename)
        read an image palette from a file. A palette file has format of (value, red, green, blue). The color value in palette file can be either unsigned char [0..255] or float [0..1]. Float value will be converted to [0..255]. The color table in file can have any number of entries between 2 to 256. It will be converted to a color table of 256 entries. Any missing index will calculated by linear interpolation between the neighboring index values. For example, index 11 is missing in the following table 10 200 60 20 12 100 100 60 Index 11 will be calculated based on index 10 and index 12, i.e. 11 150 80 40
        Parameters:
        filename - the name of the palette file.
        Returns:
        the wave palette in the form of byte[3][256]
      • hasAlpha

        public static boolean hasAlpha​(Image image)
        This method returns true if the specified image has transparent pixels.
        Parameters:
        image - the image to be check if has alpha.
        Returns:
        true if the image has alpha setting.
      • createIndexedImage

        public static Image createIndexedImage​(BufferedImage bufferedImage,
                                               byte[] imageData,
                                               byte[][] palette,
                                               long w,
                                               long h)
        Creates a RGB indexed image of 256 colors.
        Parameters:
        bufferedImage - the target image.
        imageData - the byte array of the image data.
        palette - the color lookup table.
        w - the width of the image.
        h - the height of the image.
        Returns:
        the image.
      • createTrueColorImage

        public static Image createTrueColorImage​(byte[] imageData,
                                                 boolean planeInterlace,
                                                 long w,
                                                 long h)
        Creates a true color image.

        DirectColorModel is used to construct the image from raw data. The DirectColorModel model is similar to an X11 TrueColor visual, which has the following parameters:

         Number of bits:        32
                     Red mask:              0x00ff0000
                     Green mask:            0x0000ff00
                     Blue mask:             0x000000ff
                     Alpha mask:            0xff000000
                     Color space:           sRGB
                     isAlphaPremultiplied:  False
                     Transparency:          Transparency.TRANSLUCENT
                     transferType:          DataBuffer.TYPE_INT
         

        The data may be arranged in one of two ways: by pixel or by plane. In both cases, the dataset will have a dataspace with three dimensions, height, width, and components.

        For HDF4, the interlace modes specify orders for the dimensions as:

         INTERLACE_PIXEL = [width][height][pixel components]
                    INTERLACE_PLANE = [pixel components][width][height]
         

        For HDF5, the interlace modes specify orders for the dimensions as:

         INTERLACE_PIXEL = [height][width][pixel components]
                    INTERLACE_PLANE = [pixel components][height][width]
         
        Parameters:
        imageData - the byte array of the image data.
        planeInterlace - flag if the image is plane interlace.
        w - the width of the image.
        h - the height of the image.
        Returns:
        the image.
      • toBufferedImage

        public static BufferedImage toBufferedImage​(Image image)
        This method returns a buffered image with the contents of an image.
        Parameters:
        image - the plain image object.
        Returns:
        buffered image for the given image.
      • getBytes

        public static byte[] getBytes​(Object rawData,
                                      double[] minmax,
                                      long w,
                                      long h,
                                      boolean isTransposed,
                                      byte[] byteData)
        Convert an array of raw data into array of a byte data.
        Parameters:
        rawData - The input raw data.
        minmax - the range of the raw data.
        w - the width of the raw data.
        h - the height of the raw data.
        isTransposed - if the data is transposed.
        byteData - the data in.
        Returns:
        the byte array of pixel data.
      • getBytes

        public static byte[] getBytes​(Object rawData,
                                      double[] minmax,
                                      long w,
                                      long h,
                                      boolean isTransposed,
                                      List<Number> invalidValues,
                                      byte[] byteData)
      • getBytes

        public static byte[] getBytes​(Object rawData,
                                      double[] minmax,
                                      long w,
                                      long h,
                                      boolean isTransposed,
                                      List<Number> invalidValues,
                                      boolean convertByteData,
                                      byte[] byteData)
      • getBytes

        public static byte[] getBytes​(Object rawData,
                                      double[] minmax,
                                      long w,
                                      long h,
                                      boolean isTransposed,
                                      List<Number> invalidValues,
                                      boolean convertByteData,
                                      byte[] byteData,
                                      List<Integer> list)
        Convert an array of raw data into array of a byte data.
        Parameters:
        rawData - The input raw data.
        minmax - the range of the raw data.
        w - the width of the raw data.
        h - the height of the raw data.
        isTransposed - if the data is transposed.
        invalidValues - the list of invalid values.
        convertByteData - the converted data out.
        byteData - the data in.
        list - the list of integers.
        Returns:
        the byte array of pixel data.
      • newInstance

        public static Object newInstance​(Class<?> cls,
                                         Object[] initargs)
                                  throws Exception
        Create and initialize a new instance of the given class.
        Parameters:
        cls - the class of the instance
        initargs - array of objects to be passed as arguments.
        Returns:
        a new instance of the given class.
        Throws:
        Exception - if a failure occurred
      • autoContrastCompute

        public static int autoContrastCompute​(Object data,
                                              double[] params,
                                              boolean isUnsigned)
        Computes autocontrast parameters (gain equates to contrast and bias equates to brightness) for integers.

        The computation is based on the following scaling

              int_8       [0, 127]
              uint_8      [0, 255]
              int_16      [0, 32767]
              uint_16     [0, 65535]
              int_32      [0, 2147483647]
              uint_32     [0, 4294967295]
              int_64      [0, 9223372036854775807]
              uint_64     [0, 18446744073709551615] // Not supported.
         
        Parameters:
        data - the raw data array of signed/unsigned integers
        params - the auto gain parameter. params[0]=gain, params[1]=bias,
        isUnsigned - the flag to indicate if the data array is unsigned integer.
        Returns:
        non-negative if successful; otherwise, returns negative
      • autoContrastApply

        public static Object autoContrastApply​(Object dataIN,
                                               Object dataOUT,
                                               double[] params,
                                               double[] minmax,
                                               boolean isUnsigned)
        Apply autocontrast parameters to the original data in place (destructive)
        Parameters:
        dataIN - the original data array of signed/unsigned integers
        dataOUT - the converted data array of signed/unsigned integers
        params - the auto gain parameter. params[0]=gain, params[1]=bias
        minmax - the data range. minmax[0]=min, minmax[1]=max
        isUnsigned - the flag to indicate if the data array is unsigned integer
        Returns:
        the data array with the auto contrast conversion; otherwise, returns null
      • autoContrastConvertImageBuffer

        public static int autoContrastConvertImageBuffer​(Object src,
                                                         byte[] dst,
                                                         boolean isUnsigned)
        Converts image raw data to bytes. The integer data is converted to byte data based on the following rule
                 uint_8       x
                 int_8       (x & 0x7F) << 1
                 uint_16     (x >> 8) & 0xFF
                 int_16      (x >> 7) & 0xFF
                 uint_32     (x >> 24) & 0xFF
                 int_32      (x >> 23) & 0xFF
                 uint_64     (x >> 56) & 0xFF
                 int_64      (x >> 55) & 0xFF
         
        Parameters:
        src - the source data array of signed integers or unsigned shorts
        dst - the destination data array of bytes
        isUnsigned - the flag to indicate if the data array is unsigned integer.
        Returns:
        non-negative if successful; otherwise, returns negative
      • autoContrastComputeMinMax

        public static int autoContrastComputeMinMax​(Object data,
                                                    double[] minmax)
        Computes autocontrast parameters by
            min = mean - 3 * std.dev
            max = mean + 3 * std.dev
         
        Parameters:
        data - the raw data array
        minmax - the min and max values.
        Returns:
        non-negative if successful; otherwise, returns negative
      • findMinMax

        public static int findMinMax​(Object data,
                                     double[] minmax,
                                     Object fillValue)
        Finds the min and max values of the data array
        Parameters:
        data - the raw data array
        minmax - the mmin and max values of the array.
        fillValue - the missing value or fill value. Exclude this value when check for min/max
        Returns:
        non-negative if successful; otherwise, returns negative
      • findDataDist

        public static int findDataDist​(Object data,
                                       int[] dataDist,
                                       double[] minmax)
        Finds the distribution of data values
        Parameters:
        data - the raw data array
        dataDist - the data distirbution.
        minmax - the data range
        Returns:
        non-negative if successful; otherwise, returns negative
      • computeStatistics

        public static int computeStatistics​(Object data,
                                            double[] avgstd,
                                            Object fillValue)
        Computes mean and standard deviation of a data array
        Parameters:
        data - the raw data array
        avgstd - the statistics: avgstd[0]=mean and avgstd[1]=stdev.
        fillValue - the missing value or fill value. Exclude this value when compute statistics
        Returns:
        non-negative if successful; otherwise, returns negative
      • saveAsBinary

        public static void saveAsBinary​(DataOutputStream out,
                                        Object data,
                                        ByteOrder order)
                                 throws Exception
        Throws:
        Exception
      • getBinaryDataFromFile

        public static boolean getBinaryDataFromFile​(Object dataOut,
                                                    String fileName,
                                                    ByteOrder order)
        Reads data from a binary file into a buffer.
        Parameters:
        dataOut - the output stream
        fileName - the file to read binary data from
        order - the new byte order, either BIG_ENDIAN or LITTLE_ENDIAN
        Returns:
        true if successful; otherwise, false.
      • toBinaryString

        public static final String toBinaryString​(long v,
                                                  int nbytes)
        Returns a string representation of the long argument as an unsigned integer in base 2. This is different from Long.toBinaryString(long i). This function add padding (0's) to the string based on the nbytes. For example, if v=15, nbytes=1, the string will be "00001111".
        Parameters:
        v - the long value
        nbytes - number of bytes in the integer
        Returns:
        the string representation of the unsigned long value represented by the argument in binary (base 2).
      • toBinaryString

        public static final String toBinaryString​(BigInteger v,
                                                  int nbytes)
      • toHexString

        public static final String toHexString​(long v,
                                               int nbytes)
        Returns a string representation of the long argument as an unsigned integer in base 16. This is different from Long.toHexString(long i). This function add padding (0's) to the string based on the nbytes. For example, if v=42543, nbytes=4, the string will be "0000A62F".
        Parameters:
        v - the long value
        nbytes - number of bytes in the integer
        Returns:
        the string representation of the unsigned long value represented by the argument in hexadecimal (base 16).
      • toHexString

        public static final String toHexString​(BigInteger v,
                                               int nbytes)
        Returns a string representation of the BigInteger argument as an unsigned integer in base 16. This is different from BigInteger.toString(16). This function adds padding (0's) to the string based on the nbytes. For example, if v=42543, nbytes=4, the string will be "0000A62F".
        Parameters:
        v - the BigInteger value
        nbytes - number of bytes in the integer
        Returns:
        the string representation of the unsigned long value represented by the argument in hexadecimal (base 16).
      • applyBitmask

        public static final boolean applyBitmask​(Object theData,
                                                 BitSet theMask,
                                                 ViewProperties.BITMASK_OP op)
        Apply bitmask to a data array.
        Parameters:
        theData - the data array which the bitmask is applied to.
        theMask - the bitmask to be applied to the data array.
        op - the bitmask op to be applied
        Returns:
        true if bitmask is applied successfully; otherwise, false.
      • getHDF5UserBlock

        public static byte[] getHDF5UserBlock​(String filename)
        Read HDF5 user block data into byte array.
        Parameters:
        filename - the HDF5 file from which to get the user block
        Returns:
        a byte array of user block, or null if there is user data.
      • setHDF5UserBlock

        public static boolean setHDF5UserBlock​(String fin,
                                               String fout,
                                               byte[] buf)
        Write HDF5 user block data into byte array.
        Parameters:
        fin - the input filename
        fout - the output filename
        buf - the data to write into the user block
        Returns:
        a byte array of user block, or null if there is user data.
      • isHDF4

        public static boolean isHDF4​(String filename)
        look at the first 4 bytes of the file to see if it is an HDF4 file. byte[0]=14, byte[1]=3, byte[2]=19, byte[3]=1 or if it is a netCDF file byte[0]=67, byte[1]=68, byte[2]=70, byte[3]=1
        Parameters:
        filename - the file to test if HDF4
        Returns:
        true if the file is of type HDF4
      • isHDF5

        public static boolean isHDF5​(String filename)
        look at the first 8 bytes of the file to see if it is an HDF5 file. byte[0]=-199 which is 137 in unsigned byte, byte[1]=72, byte[2]=68, byte[3]=70, byte[4]=13, byte[5]=10, byte[6]=26, byte[7]=10
        Parameters:
        filename - the file to test if HDF5
        Returns:
        true if the file is of type HDF5
      • isNetcdf

        public static boolean isNetcdf​(String filename)
        look at the first 4 bytes of the file to see if it is a netCDF file byte[0]=67, byte[1]=68, byte[2]=70, byte[3]=1 or
        Parameters:
        filename - the file to test if netcdf
        Returns:
        true if the file is of type netcdf
      • launchBrowser

        public static final void launchBrowser​(String url)
                                        throws Exception
        Launch default browser for a given URL.
        Parameters:
        url - the URL to open.
        Throws:
        Exception - if a failure occurred
      • createNewFile

        public static FileFormat createNewFile​(String filename,
                                               String dir,
                                               String type,
                                               List<FileFormat> openFiles)
                                        throws Exception
        Create a new HDF file with default file creation properties
        Parameters:
        filename - the file to create
        dir - the directory for file
        type - the type of the file
        openFiles - the list of already opened files
        Returns:
        the FileFormat instance of the newly created file
        Throws:
        Exception - if a failure occurred
      • checkNewFile

        public static final File checkNewFile​(String path,
                                              String ext)
        Check and find a non-exist file.
        Parameters:
        path - -- the path that the new file will be checked.
        ext - -- the extention of the new file.
        Returns:
        -- the new file.
      • isNaNINF

        public static final boolean isNaNINF​(double val)
        Check if a given number if NaN or INF.
        Parameters:
        val - the number to be checked
        Returns:
        true if the number is Nan or INF; otherwise, false.
      • checkValidJavaArrayIndex

        public static boolean checkValidJavaArrayIndex​(long value)
        Since Java does not allow array indices to be larger than int type, check the given value to see if it is within the valid range of a Java int.
        Parameters:
        value - The value to check
        Returns:
        false if the value is outside the range of a Java int, true otherwise.
      • showError

        public static void showError​(org.eclipse.swt.widgets.Shell parent,
                                     String title,
                                     String errorMsg)
        Show an SWT error dialog with the given error message.
        Parameters:
        parent - The parent Shell of the MessageDialog
        title - The title to set for the MessageDialog
        errorMsg - The error message to display in the MessageDialog
      • showInformation

        public static void showInformation​(org.eclipse.swt.widgets.Shell parent,
                                           String title,
                                           String infoMsg)
        Show an SWT Information dialog with the given message.
        Parameters:
        parent - The parent Shell of the MessageDialog
        title - The title to set for the MessageDialog
        infoMsg - The message to display in the MessageDialog
      • showConfirm

        public static boolean showConfirm​(org.eclipse.swt.widgets.Shell parent,
                                          String title,
                                          String confMsg)
        Show an SWT Confirm dialog with the given message.
        Parameters:
        parent - The parent Shell of the MessageDialog
        title - The title to set for the MessageDialog
        confMsg - The message to display in the MessageDialog
        Returns:
        The status of the dialog after closing
      • showWarning

        public static void showWarning​(org.eclipse.swt.widgets.Shell parent,
                                       String title,
                                       String warnMsg)
        Show an SWT Warning dialog with the given message.
        Parameters:
        parent - The parent Shell of the MessageDialog
        title - The title to set for the MessageDialog
        warnMsg - The message to display in the MessageDialog