org.apache.wiki.diff
Class ContextualDiffProvider

java.lang.Object
  org.apache.wiki.diff.ContextualDiffProvider

All Implemented Interfaces:

DiffProvider, WikiProvider

public class ContextualDiffProvider
extends Object
implements DiffProvider

A seriously better diff provider, which highlights changes word-by-word using CSS. Suggested by John Volkar.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.wiki.diff.DiffProvider

DiffProvider.NullDiffProvider

Field Summary

String	m_alternatingSpaceHtml
String	m_changeEndHtml
String	m_changeStartHtml
String	m_deletionEndHtml
String	m_deletionStartHtml
String	m_diffEnd
String	m_diffStart
String	m_elidedHeadIndicatorHtml
String	m_elidedTailIndicatorHtml
boolean	m_emitChangeNextPreviousHyperlinks
String	m_insertionEndHtml
String	m_insertionStartHtml
String	m_lineBreakHtml
static String	PROP_UNCHANGED_CONTEXT_LIMIT A jspwiki.properties value to define how many characters are shown around the change context.

Fields inherited from interface org.apache.wiki.WikiProvider

LATEST_VERSION

Constructor Summary

ContextualDiffProvider()
Constructs this provider.

Method Summary

String	getProviderInfo() Return a valid HTML string for information.
void	initialize(WikiEngine engine, Properties properties) Initializes the page provider.
String	makeDiffHtml(WikiContext ctx, String wikiOld, String wikiNew) Do a colored diff of the two regions.

Methods inherited from class java.lang.Object

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

Field Detail

PROP_UNCHANGED_CONTEXT_LIMIT

public static final String PROP_UNCHANGED_CONTEXT_LIMIT

A jspwiki.properties value to define how many characters are shown around the change context. The current value is "jspwiki.contextualDiffProvider.unchangedContextLimit".

See Also:

Constant Field Values

m_emitChangeNextPreviousHyperlinks

public boolean m_emitChangeNextPreviousHyperlinks

m_changeStartHtml

public String m_changeStartHtml

m_changeEndHtml

public String m_changeEndHtml

m_diffStart

public String m_diffStart

m_diffEnd

public String m_diffEnd

m_insertionStartHtml

public String m_insertionStartHtml

m_insertionEndHtml

public String m_insertionEndHtml

m_deletionStartHtml

public String m_deletionStartHtml

m_deletionEndHtml

public String m_deletionEndHtml

m_elidedHeadIndicatorHtml

public String m_elidedHeadIndicatorHtml

m_elidedTailIndicatorHtml

public String m_elidedTailIndicatorHtml

m_lineBreakHtml

public String m_lineBreakHtml

m_alternatingSpaceHtml

public String m_alternatingSpaceHtml

Constructor Detail

ContextualDiffProvider

public ContextualDiffProvider()

Constructs this provider.

Method Detail

getProviderInfo

public String getProviderInfo()

Description copied from interface: WikiProvider

Return a valid HTML string for information. May be anything.

Specified by:

getProviderInfo in interface WikiProvider

Returns:

A string describing the provider.

See Also:

{@inheritDoc}

initialize

public void initialize(WikiEngine engine,
                       Properties properties)
                throws NoRequiredPropertyException,
                       IOException

Description copied from interface: WikiProvider

Initializes the page provider.

Specified by:

initialize in interface WikiProvider

Parameters:

engine - WikiEngine to own this provider

properties - A set of properties used to initialize this provider

Throws:

NoRequiredPropertyException - If the provider needs a property which is not found in the property set

IOException - If there is an IO problem

See Also:

{@inheritDoc}

makeDiffHtml

public String makeDiffHtml(WikiContext ctx,
                           String wikiOld,
                           String wikiNew)

Do a colored diff of the two regions. This. is. serious. fun. ;-)

Specified by:

makeDiffHtml in interface DiffProvider

Parameters:

ctx - The Wiki Context

wikiOld - the old text

wikiNew - the new text

Returns:

An XHTML diff.

See Also:

{@inheritDoc}