Module java.desktop
Package javax.swing.text

Interface Position

  • public interface Position
    Represents a location within a document. It is intended to abstract away implementation details of the document and enable specification of positions within the document that are capable of tracking of change as the document is edited.

    A Position object points at a location between two characters. As the surrounding content is altered, the Position object adjusts its offset automatically to reflect the changes. If content is inserted or removed before the Position object's location, then the Position increments or decrements its offset, respectively, so as to point to the same location. If a portion of the document is removed that contains a Position's offset, then the Position's offset becomes that of the beginning of the removed region. For example, if a Position has an offset of 5 and the region 2-10 is removed, then the Position's offset becomes 2.

    Position with an offset of 0 is a special case. It never changes its offset while document content is altered.

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Interface Description
      static class  Position.Bias
      A typesafe enumeration to indicate bias to a position in the model.

    • Method Detail

      • getOffset

        int getOffset()
        Fetches the current offset within the document.
        Returns:
        the offset >= 0