Package org.apache.fop.complexscripts.bidi

Class DelimitedTextRange

  • public class DelimitedTextRange
extends java.lang.Object
    The DelimitedTextRange class implements the "delimited text range" as described by XML-FO 1.1 ยง5.8, which contains a flattened sequence of characters. Any FO that generates block areas serves as a delimiter.

    This work was originally authored by Glenn Adams (gadams@apache.org).

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private java.lang.StringBuffer buffer  
      private FONode fn  
      private java.util.List intervals  
      private static org.apache.commons.logging.Log log
      Assign resolved levels to a specified text interval over this delimited text range.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void append​(char c, FONode fn)
      Append interval using character C.
      void append​(CharIterator it, FONode fn)
      Append interval using characters from character iterator IT.
      private void assignBlockLevel​(FONode node, int defaultLevel)  
      private void assignBlockLevel​(Direction paragraphEmbeddingLevel)  
      private void assignLevels​(int[] levels)
      Assign resolved levels to all text intervals of this delimited text range.
      private java.util.List assignLevels​(TextInterval ti, int[] levels)  
      private void assignTextLevels()
      Assign resolved levels for each interval to source #PCDATA in the associated FOText.
      FONode getNode()
      Obtain node that generated this text range.
      boolean isEmpty()
      Determine if range is empty.
      void resolve()
      Resolve bidirectional levels for this range.
      private void resolve​(Direction paragraphEmbeddingLevel)  
      java.lang.String toString()  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Field Detail

      • buffer

        private java.lang.StringBuffer buffer

      • intervals

        private java.util.List intervals

      • log

        private static final org.apache.commons.logging.Log log

        Assign resolved levels to a specified text interval over this delimited text range.

        Returns a list of text intervals containing either (1) the single, input text interval or (2) two or more new text intervals obtained from sub-dividing the input text range into level runs, i.e., runs of text assigned to a single level.

    • Constructor Detail

      • DelimitedTextRange

        public DelimitedTextRange​(FONode fn)
        Primary constructor.
        Parameters:
        fn - node that generates this text range

    • Method Detail

      • getNode

        public FONode getNode()
        Obtain node that generated this text range.
        Returns:
        node that generated this text range

      • append

        public void append​(CharIterator it,
                   FONode fn)
        Append interval using characters from character iterator IT.
        Parameters:
        it - character iterator
        fn - node that generates interval being appended

      • append

        public void append​(char c,
                   FONode fn)
        Append interval using character C.
        Parameters:
        c - character
        fn - node that generates interval being appended

      • isEmpty

        public boolean isEmpty()
        Determine if range is empty.
        Returns:
        true if range is empty

      • resolve

        public void resolve()
        Resolve bidirectional levels for this range.

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object

      • resolve

        private void resolve​(Direction paragraphEmbeddingLevel)

      • assignLevels

        private void assignLevels​(int[] levels)

        Assign resolved levels to all text intervals of this delimited text range.

        Has a possible side effect of replacing the intervals array with a new array containing new text intervals, such that each text interval is associated with a single level run.

        Parameters:
        levels - array of levels each corresponding to each index of the delimited text range

      • assignLevels

        private java.util.List assignLevels​(TextInterval ti,
                                    int[] levels)

      • assignTextLevels

        private void assignTextLevels()

        Assign resolved levels for each interval to source #PCDATA in the associated FOText.

      • assignBlockLevel

        private void assignBlockLevel​(Direction paragraphEmbeddingLevel)

      • assignBlockLevel

        private void assignBlockLevel​(FONode node,
                              int defaultLevel)