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Java Standard Edition (SE)

AttributedCharacterIterator


compact1, compact2, compact3
java.text

Interface AttributedCharacterIterator

  • All Superinterfaces:
    CharacterIterator, Cloneable


    public interface AttributedCharacterIterator
    extends CharacterIterator
    An AttributedCharacterIterator allows iteration through both text and related attribute information.

    An attribute is a key/value pair, identified by the key. No two attributes on a given character can have the same key.

    The values for an attribute are immutable, or must not be mutated by clients or storage. They are always passed by reference, and not cloned.

    A run with respect to an attribute is a maximum text range for which:

    • the attribute is undefined or null for the entire range, or
    • the attribute value is defined and has the same non-null value for the entire range.

    A run with respect to a set of attributes is a maximum text range for which this condition is met for each member attribute.

    When getting a run with no explicit attributes specified (i.e., calling getRunStart() and getRunLimit()), any contiguous text segments having the same attributes (the same set of attribute/value pairs) are treated as separate runs if the attributes have been given to those text segments separately.

    The returned indexes are limited to the range of the iterator.

    The returned attribute information is limited to runs that contain the current character.

    Attribute keys are instances of AttributedCharacterIterator.Attribute and its subclasses, such as TextAttribute.

    Since:
    1.2
    See Also:
    AttributedCharacterIterator.Attribute, TextAttribute, AttributedString, Annotation
    • Method Detail

      • getRunStart

        int getRunStart()
        Returns the index of the first character of the run with respect to all attributes containing the current character.

        Any contiguous text segments having the same attributes (the same set of attribute/value pairs) are treated as separate runs if the attributes have been given to those text segments separately.

        Returns:
        the index of the first character of the run
      • getRunStart

        int getRunStart(AttributedCharacterIterator.Attribute attribute)
        Returns the index of the first character of the run with respect to the given attribute containing the current character.
        Parameters:
        attribute - the desired attribute.
        Returns:
        the index of the first character of the run
      • getRunStart

        int getRunStart(Set<? extends AttributedCharacterIterator.Attribute> attributes)
        Returns the index of the first character of the run with respect to the given attributes containing the current character.
        Parameters:
        attributes - a set of the desired attributes.
        Returns:
        the index of the first character of the run
      • getRunLimit

        int getRunLimit()
        Returns the index of the first character following the run with respect to all attributes containing the current character.

        Any contiguous text segments having the same attributes (the same set of attribute/value pairs) are treated as separate runs if the attributes have been given to those text segments separately.

        Returns:
        the index of the first character following the run
      • getRunLimit

        int getRunLimit(AttributedCharacterIterator.Attribute attribute)
        Returns the index of the first character following the run with respect to the given attribute containing the current character.
        Parameters:
        attribute - the desired attribute
        Returns:
        the index of the first character following the run
      • getRunLimit

        int getRunLimit(Set<? extends AttributedCharacterIterator.Attribute> attributes)
        Returns the index of the first character following the run with respect to the given attributes containing the current character.
        Parameters:
        attributes - a set of the desired attributes
        Returns:
        the index of the first character following the run
      • getAttribute

        Object getAttribute(AttributedCharacterIterator.Attribute attribute)
        Returns the value of the named attribute for the current character. Returns null if the attribute is not defined.
        Parameters:
        attribute - the desired attribute
        Returns:
        the value of the named attribute or null
      • getAllAttributeKeys

        Set<AttributedCharacterIterator.Attribute> getAllAttributeKeys()
        Returns the keys of all attributes defined on the iterator's text range. The set is empty if no attributes are defined.
        Returns:
        the keys of all attributes


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