Package com.lightdev.app.shtm

Class Util

java.lang.Object
com.lightdev.app.shtm.Util
public class Util extends Object
Utility methods for application SimplyHTML.

  • Field Details

  • Constructor Details

    • Util

      public Util()

  • Method Details

    • renameFile

      public static File renameFile(File from, String newExt)
      rename a file to have a given extension
      Parameters:
      from - the file to rename
      newExt - the new extension the file shall have
      Returns:
      the renamed file

    • findLinkUp

      public static Object findLinkUp(Element elem)
      find the next link attribute from a given element upwards through the element hierarchy
      Parameters:
      elem - the element to start looking at
      Returns:
      the link attribute found, or null, if none was found

    • removeExtension

      public static String removeExtension(String fileName)
      remove the extension from a file name
      Parameters:
      fileName - the file name to remove the extension from
      Returns:
      the file name without extension

    • resolveAttributes

      public static AttributeSet resolveAttributes(AttributeSet style)
      resolve sets of attributes that are recursively stored in each other
      Parameters:
      style - the set of attributes containing other sets of attributes

    • nameInput

      public static String nameInput(Frame parent, String initialName, String regex, String title, String text)
      get a name by asking from the user

      Wrapper for JOptionPane with I18N support

      Parameters:
      initialName - the name initially shown in option pane
      title - the title to be shown in the option pane
      text - the text to be shown in the option pane
      Returns:
      the entered name or null if action was cancelled

    • msgChoice

      public static int msgChoice(int options, String title, String msg, String item, String sep)
      Show a message with options to choose from

      Wrapper for JOptionPane with I18N support

      Parameters:
      options - the options to be shown in the dialog
      title - the title to be shown in the dialog
      msg - the message to be shown in the dialog
      item - a variable part to be shown before msg
      sep - a separator for msg and item (return or blank etc.)
      Returns:
      the choice

    • msg

      public static boolean msg(int options, String title, String msg, String item, String sep)
      Show a message with options to choose from

      Wrapper for JOptionPane with I18N support

      Parameters:
      options - the options to be shown in the dialog
      title - the title to be shown in the dialog
      msg - the message to be shown in the dialog
      item - a variable part to be shown before msg
      sep - a separator for msg and item (return or blank etc.)
      Returns:
      true, if YES was chosen, false if not

    • getStyleNamesForTag

      public static Vector getStyleNamesForTag(StyleSheet styles, String tag)
      get names of all styles for a given tag
      Parameters:
      styles - the style sheet to look for style names
      tag - the tag to find style names for
      Returns:
      a Vector with all style names found

    • getStyleNamesForTag

      public static Vector getStyleNamesForTag(AttributeSet styles, String tag)
      get names of all styles for a given tag
      Parameters:
      styles - the style sheet to look for style names
      tag - the tag to find style names for
      Returns:
      a Vector with all style names found

    • getStyleNames

      public static Vector getStyleNames(StyleSheet styles)
      get the names of all styles found in a given StyleSheet
      Parameters:
      styles - the StyleSheet to look for style names
      Returns:
      a Vector with all names found

    • deleteDir

      public static void deleteDir(File dir)
      delete a directory with all its contents

      CAUTION: This method deletes all content of the given directory including all subdirectories and their conent

      Parameters:
      dir - the directory to delete

    • copyFile

      public static void copyFile(File srcFile, File destFile) throws FileNotFoundException, IOException
      copies a single file.

      If destFile already exists or if both files are the same the method does nothing. The complete destination path will be created before copying, if necessary.

      Parameters:
      srcFile - the file to copy from
      destFile - the file to copy to
      Throws:
      FileNotFoundException
      IOException

    • getElementIndex

      public static int getElementIndex(Element elem)
      get the index of a given element in the list of its parents elements.
      Parameters:
      elem - the element to get the index number for
      Returns:
      the index of the given element

    • getClassFilePath

      public static String getClassFilePath(Class cls)
      Get the path of the class file for a given class.

      This is either a directory of a class file or a directory of a JAR file. Thus, this class must reside in the same place as the application in question, not in a separate library for instance.

      Parameters:
      cls - the class to get the path for
      Returns:
      the path of this class file or the path of the JAR file this class file resides in, whatever applies

    • getPtValue

      public static float getPtValue(String valStr)
      quick hack for getting the point value from an attribute value string (needs to be refined and consolidated with length value)
      Parameters:
      valStr - the attribute value string to get the point size for
      Returns:
      the point size from the given attribute value

    • getLastAttrUnit

      public static String getLastAttrUnit()
      get the unit string from the last attribute object which was converted to a numerical value
      Returns:
      the unit string from the last attribute object

    • getAttrValue

      public static float getAttrValue(Object attr)
      get the numerical value for an attribute object
      Parameters:
      attr - the attribute to get the value from
      Returns:
      the numerical value

    • getAbsoluteAttrVal

      public static float getAbsoluteAttrVal(Object attr)
      get the absolute value of an attribute
      Parameters:
      attr - the attribute to get the value from
      Returns:
      the absolute numerical value

    • getRowIndex

      public static int getRowIndex(Element cell)
      get the row index for a given table cell
      Parameters:
      cell - the cell element to get the row index for
      Returns:
      the row index of the given cell element

    • tokenize

      public static String[] tokenize(String input, String delim)
      Get an arry of strings from a given string having several entries delimited by blanks.

      In the resource file of SimplyHTML for instance menu bar and menu definitions are contained as strings having a key for each item. The keys are delimited with blanks.

      A string "file edit help" from the resource file for instance would be broken into an array of strings looking as follows

      String[0]="file"
      String[1]="edit"
      String[2]="help"

      Parameters:
      input - the string to transform into a string array
      Returns:
      the resulting string array

    • msgStart

      public static void msgStart(String startMsg)
      write a message with a time stamp to System.out and remember the time stamp in a LIFO Vector

    • findElementUp

      public static Element findElementUp(String name, Element start)
      find the first occurrence of an Element in the element tree above a given Element
      Parameters:
      name - the name of the Element to search for
      start - the Element to start looking
      Returns:
      the found Element or null if none is found

    • findElementUp

      public static Element findElementUp(String name1, String name2, Element start)
      find the first occurrence of an Element in the element tree above a given Element
      Parameters:
      name1 - the primary name of the Element to search for
      name2 - an alternative name for the Element to search for
      start - the Element to start looking
      Returns:
      the found Element or null if none is found

    • findElementDown

      public static Element findElementDown(String name, Element parent)
      find the first occurrence of an Element in the element tree below a given Element
      Parameters:
      name - the name of the Element to search for
      parent - the Element to start looking
      Returns:
      the found Element or null if none is found

    • addGridBagComponent

      public static void addGridBagComponent(JComponent container, JComponent comp, GridBagLayout g, GridBagConstraints c, int gx, int gy, int a)
      convenience method for adding a component to a container layed out by a GridBagLayout
      Parameters:
      container - the container to add a component to
      comp - the component to add to container
      g - the GridBagLayout associated with container
      c - the GridBagConstraints to use
      gx - the value to use for GridBagConstraints.gridx
      gy - the value to use for GridBagConstraints.gridy
      a - the value to use for GridBagConstraints.anchor

    • addGridBagComponent

      public static void addGridBagComponent(JComponent container, JComponent comp, GridBagLayout g, GridBagConstraints c, int gx, int gy, int a, int gw, int gh)
      convenience method for adding a component to a container layed out by a GridBagLayout
      Parameters:
      container - the container to add a component to
      comp - the component to add to container
      g - the GridBagLayout associated with container
      c - the GridBagConstraints to use
      gx - the value to use for GridBagConstraints.gridx
      gy - the value to use for GridBagConstraints.gridy
      a - the value to use for GridBagConstraints.anchor
      gw - the value to use for GridBagConstraints.gridwidth
      gh - teh value to use for GridBagConstraints.gridheight

    • addGridBagComponent

      public static void addGridBagComponent(JComponent container, JComponent comp, GridBagLayout g, GridBagConstraints c, int gx, int gy, int a, int gw, int gh, int f)
      convenience method for adding a component to a container layed out by a GridBagLayout
      Parameters:
      container - the container to add a component to
      comp - the component to add to container
      g - the GridBagLayout associated with container
      c - the GridBagConstraints to use
      gx - the value to use for GridBagConstraints.gridx
      gy - the value to use for GridBagConstraints.gridy
      a - the value to use for GridBagConstraints.anchor
      gw - the value to use for GridBagConstraints.gridwidth
      gh - teh value to use for GridBagConstraints.gridheight
      f - the value to use for GridBagConstraints.fill

    • addGridBagComponent

      public static void addGridBagComponent(JComponent container, JComponent comp, GridBagLayout g, GridBagConstraints c, int gx, int gy, int a, int gw, int gh, int f, double wx, double wy)
      convenience method for adding a component to a container layed out by a GridBagLayout
      Parameters:
      container - the container to add a component to
      comp - the component to add to container
      g - the GridBagLayout associated with container
      c - the GridBagConstraints to use
      gx - the value to use for GridBagConstraints.gridx
      gy - the value to use for GridBagConstraints.gridy
      a - the value to use for GridBagConstraints.anchor
      gw - the value to use for GridBagConstraints.gridwidth
      gh - teh value to use for GridBagConstraints.gridheight
      f - the value to use for GridBagConstraints.fill
      wx - the value to use for GridBagConstraints.weightx
      wy - the value to use for GridBagConstraints.weighty

    • resolveRelativePath

      public static String resolveRelativePath(String relPath, String absPath)
      resolve a relative URL string against an absolute URL string.

      the absolute URL string is the start point for the relative path.

      Example:

         absolute path:  file:/d:/eigene dateien/eigene bilder/
   relative path:  ../images/test.jpg
   result:         file:/d:/eigene dateien/images/test.jpg
      Parameters:
      relPath - the relative URL string to resolve
      absPath - the absolute URL string to start at
      Returns:
      the absolute URL string resulting from resolving relPath against absPath

    • getRelativePath

      public static String getRelativePath(File fromDir, File toFile)
      get the path to a given file relative to a given directory
      Parameters:
      fromDir - the directory having the file from which the link refers
      toFile - the file to which a link refers
      Returns:
      the relative path

    • errMsg

      public static void errMsg(Component owner, String msg, Throwable e)
      show an error message and print a stack trace to the console if in development mode (DEV_MODE = true)
      Parameters:
      owner - the owner of the message, or null
      msg - the message to display, or null
      e - the exception object describing the error, or null

    • center

      public static void center(Component parent, Component comp)
      center a Component relative to another Component.
      Parameters:
      parent - the Component to be used as the basis for centering
      comp - the Component to be centered within parent

    • styleSheet

      public static StyleSheet styleSheet()
      get a StyleSheet object for using its utility methods

    • removeChar

      public static String removeChar(String src, char c)
      remove all occurrences of a given char from a given string
      Parameters:
      src - the string to remove from
      c - the char to remove
      Returns:
      a string copy of src with all occurrences of c removed

    • getResourceString

      public static String getResourceString(UIResources resources, String nm)
      get a string from the resources file
      Parameters:
      resources - the TextResources to get the string from
      nm - the key of the string
      Returns:
      the string for the given key or null if not found

    • getResourceString

      public static String getResourceString(String nm)

    • getPreference

      public static String getPreference(String key, String defaultValue)