Package org.apache.wiki.tags

Class DiffLinkTag

java.lang.Object

javax.servlet.jsp.tagext.TagSupport

org.apache.wiki.tags.WikiTagBase

org.apache.wiki.tags.WikiLinkTag

org.apache.wiki.tags.DiffLinkTag

All Implemented Interfaces:

Serializable, javax.servlet.jsp.tagext.IterationTag, javax.servlet.jsp.tagext.JspTag, javax.servlet.jsp.tagext.Tag, javax.servlet.jsp.tagext.TryCatchFinally

public class DiffLinkTag
extends WikiLinkTag

Writes a diff link. Body of the link becomes the link text.

Attributes

• page - Page name to refer to. Default is the current page.
• version - The older of these versions. May be an integer to signify a version number, or the text "latest" to signify the latest version. If not specified, will default to "latest". May also be "previous" to signify a version prior to this particular version.
• newVersion - The newer of these versions. Can also be "latest", or "previous". Defaults to "latest".

If the page does not exist, this tag will fail silently, and not evaluate its body contents.

Since:

2.0

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static String	VER_CURRENT
static String	VER_LATEST
static String	VER_PREVIOUS

Fields inherited from class org.apache.wiki.tags.WikiLinkTag

ANCHOR, m_format, m_pageName, m_template, URL

Fields inherited from class org.apache.wiki.tags.WikiTagBase

m_wikiContext

Fields inherited from class javax.servlet.jsp.tagext.TagSupport

id, pageContext

Fields inherited from interface javax.servlet.jsp.tagext.IterationTag

EVAL_BODY_AGAIN

Fields inherited from interface javax.servlet.jsp.tagext.Tag

EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE

Constructor Summary

Constructors

Constructor	Description
DiffLinkTag()

Method Summary

Modifier and Type	Method	Description
int	doWikiStartTag()	This method is allowed to do pretty much whatever he wants.
String	getNewVersion()
String	getVersion()
void	initTag()	This method is called when the tag is encountered within a new request, but before the setXXX() methods are called.
void	setNewVersion(String arg)
void	setVersion(String arg)

Methods inherited from class org.apache.wiki.tags.WikiLinkTag

doEndTag, getPage, getTemplate, setFormat, setPage, setTemplate

Methods inherited from class org.apache.wiki.tags.WikiTagBase

doCatch, doFinally, doStartTag, setId, setPageContext

Methods inherited from class javax.servlet.jsp.tagext.TagSupport

doAfterBody, findAncestorWithClass, getId, getParent, getValue, getValues, release, removeValue, setParent, setValue

Methods inherited from class java.lang.Object

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

Field Details

VER_LATEST

public static final String VER_LATEST

See Also:

Constant Field Values

VER_PREVIOUS

public static final String VER_PREVIOUS

See Also:

Constant Field Values

VER_CURRENT

public static final String VER_CURRENT

See Also:

Constant Field Values

Constructor Details

DiffLinkTag

public DiffLinkTag()

Method Details

initTag

public void initTag()

Description copied from class: WikiTagBase

This method is called when the tag is encountered within a new request, but before the setXXX() methods are called. The default implementation does nothing.

Overrides:

initTag in class WikiLinkTag

getVersion

public final String getVersion()

setVersion

public void setVersion(String arg)

getNewVersion

public final String getNewVersion()

setNewVersion

public void setNewVersion(String arg)

doWikiStartTag

public final int doWikiStartTag()
                         throws IOException

Description copied from class: WikiTagBase

This method is allowed to do pretty much whatever he wants. We then catch all mistakes.

Specified by:

doWikiStartTag in class WikiTagBase

Throws:

IOException