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JavaTM 2 Platform Std. Ed. v1.6.0

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
static class Position.Bias
          A typesafe enumeration to indicate bias to a position in the model.
Method Summary
 int getOffset()
          Fetches the current offset within the document.

Method Detail


int getOffset()
Fetches the current offset within the document.

the offset >= 0

Copyright 2003 Sun Microsystems, Inc. All rights reserved