Package ca.cgjennings.algo

Interface DiffListener<E>

Type Parameters:

E - the type of the elements that may be inserted, deleted, or changed; for example, in a text file each element might be a String representing a single line

public interface DiffListener<E>

A listener that receives results from the Diff algorithm.

Since:

2.1

Author:

Chris Jennings

Method Summary

Modifier and Type	Method	Description
void	inserted(java.lang.Object original, java.lang.Object changed, int originalIndex, E insertedelement)	Called to indicate that an element has been inserted to create the changed sequence.
void	removed(java.lang.Object original, java.lang.Object changed, int originalIndex, E removedelement)	Called to indicate that an element has been removed to create the changed sequence.
void	unchanged(java.lang.Object original, java.lang.Object changed, int originalIndex, E element)	Called to indicate that an element was copied without change from the original to the changed sequence.

Method Detail

unchanged

void unchanged(java.lang.Object original,
               java.lang.Object changed,
               int originalIndex,
               E element)

Called to indicate that an element was copied without change from the original to the changed sequence.

Parameters:

original - the array or list that was passed to Diff.findChanges(E[], E[]) as the parameter named original

changed - the array or list that was passed to Diff.findChanges(E[], E[]) as the parameter named changed

originalIndex - the index in the original sequence at which this event occurs

element - the original element

inserted

void inserted(java.lang.Object original,
              java.lang.Object changed,
              int originalIndex,
              E insertedelement)

Called to indicate that an element has been inserted to create the changed sequence.

Parameters:

original - the array or list that was passed to Diff.findChanges(E[], E[]) as the parameter named original

changed - the array or list that was passed to Diff.findChanges(E[], E[]) as the parameter named changed

originalIndex - the index in the original sequence at which this event occurs

insertedelement - the element from the changed sequence that must be inserted

removed

void removed(java.lang.Object original,
             java.lang.Object changed,
             int originalIndex,
             E removedelement)

Called to indicate that an element has been removed to create the changed sequence.

Parameters:

original - the array or list that was passed to Diff.findChanges(E[], E[]) as the parameter named original

changed - the array or list that was passed to Diff.findChanges(E[], E[]) as the parameter named changed

originalIndex - the index in the original sequence at which this event occurs

removedelement - the element from the changed sequence that must be inserted