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

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

ATTR_CONTEXT, 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

DiffLinkTag()

Method Summary

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 Detail

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 Detail

DiffLinkTag

public DiffLinkTag()

Method Detail

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