Package com.day.util.diff

Class DefaultChangeListener

java.lang.Object

com.day.util.diff.DefaultChangeListener

All Implemented Interfaces:

ChangeListener

public class DefaultChangeListener
extends Object
implements ChangeListener

Provides a default output for a diff.

Field Summary

Fields inherited from interface com.day.util.diff.ChangeListener

CVS_ID

Constructor Summary

Constructors

Constructor	Description
DefaultChangeListener(PrintWriter out)	Creates a new default change listener that will write to the given writer.
DefaultChangeListener(PrintWriter out, boolean debug)	Creates a new default change listener that will write to the given writer.

Method Summary

Modifier and Type	Method	Description
void	onChangeEnd()	Invoked after a change finished.
void	onChangeStart(int leftLine, int leftLen, int rightLine, int rightLen)	Invoked before a change starts.
void	onDeleted(int leftLine, int rightLine, Document.Element text)	Invoked for a deleted element
void	onDocumentsEnd(Document left, Document right)	Invoked after the iteration over the changes finished.
void	onDocumentsStart(Document left, Document right)	Invoked before the iteration over the changes start.
void	onInserted(int leftLine, int rightLine, Document.Element text)	Invoked for an inserted element
void	onUnmodified(int leftLine, int rightLine, Document.Element text)	Invoked for an unmodified element

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DefaultChangeListener

public DefaultChangeListener(PrintWriter out)

Creates a new default change listener that will write to the given writer.

Parameters:

out - the writer

DefaultChangeListener

public DefaultChangeListener(PrintWriter out,
 boolean debug)

Creates a new default change listener that will write to the given writer. if debug is true the line numbers are also included in the output.

Parameters:

out - the writer

debug - flag

Method Details

onDocumentsStart

public void onDocumentsStart(Document left,
 Document right)

Invoked before the iteration over the changes start.

Specified by:

onDocumentsStart in interface ChangeListener

Parameters:

left - the left document

right - the right document

onDocumentsEnd

public void onDocumentsEnd(Document left,
 Document right)

Invoked after the iteration over the changes finished.

Specified by:

onDocumentsEnd in interface ChangeListener

Parameters:

left - the left document

right - the right document

onChangeStart

public void onChangeStart(int leftLine,
 int leftLen,
 int rightLine,
 int rightLen)

Invoked before a change starts.

Specified by:

onChangeStart in interface ChangeListener

Parameters:

leftLine - the index of the left element of this change.

leftLen - the number of changed left elements.

rightLine - the index of the right element of this change.

rightLen - the number of changed right elements.

onChangeEnd

public void onChangeEnd()

Invoked after a change finished.

Specified by:

onChangeEnd in interface ChangeListener

onUnmodified

public void onUnmodified(int leftLine,
 int rightLine,
 Document.Element text)

Invoked for an unmodified element

Specified by:

onUnmodified in interface ChangeListener

Parameters:

leftLine - the index of the left element

rightLine - the index of the right element

text - the element

onDeleted

public void onDeleted(int leftLine,
 int rightLine,
 Document.Element text)

Invoked for a deleted element

Specified by:

onDeleted in interface ChangeListener

Parameters:

leftLine - the index of the left element

rightLine - the index of the right element

text - the element

onInserted

public void onInserted(int leftLine,
 int rightLine,
 Document.Element text)

Invoked for an inserted element

Specified by:

onInserted in interface ChangeListener

Parameters:

leftLine - the index of the left element

rightLine - the index of the right element

text - the element