org.codehaus.groovy.grails.web.taglib
Class GroovyUnlessTag

java.lang.Object
  org.codehaus.groovy.grails.web.taglib.GroovySyntaxTag
      org.codehaus.groovy.grails.web.taglib.GroovyUnlessTag

All Implemented Interfaces:

GrailsTag

public class GroovyUnlessTag
extends GroovySyntaxTag

Field Summary

static java.lang.String

TAG_NAME

Fields inherited from class org.codehaus.groovy.grails.web.taglib.GroovySyntaxTag

ATTRIBUTE_IN, ATTRIBUTE_VAR, attributes, ATTRIBUTES_STATUS, foreachRenamedIt, out, parser, tagContext

Constructor Summary

GroovyUnlessTag()

Method Summary

protected java.lang.String	attributeValueOrNull(java.lang.String attributeName)
void	doEndTag() process the end tag
void	doStartTag() Process the start tag
java.lang.String	getName()
boolean	isAllowPrecedingContent() Tags must return the correct value to indicate whether or not non-whitespace content is permitted before this tag.
boolean	isKeepPrecedingWhiteSpace() Tags must return the correct value to indicate whether or not whitespace before this tag should be kept in the output.
protected void	outputStartTag(java.lang.String envExpression, java.lang.String testExpression)

Methods inherited from class org.codehaus.groovy.grails.web.taglib.GroovySyntaxTag

calculateExpression, doEachMethod, endEachMethod, getForeachRenamedIt, init, setAttribute, setAttributes, setWriter

Methods inherited from class java.lang.Object

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

Field Detail

TAG_NAME

public static final java.lang.String TAG_NAME

See Also:

Constant Field Values

Constructor Detail

GroovyUnlessTag

public GroovyUnlessTag()

Method Detail

outputStartTag

protected void outputStartTag(java.lang.String envExpression,
                              java.lang.String testExpression)

getName

public java.lang.String getName()

Returns:

The name of the tag

doStartTag

public void doStartTag()

Description copied from interface: GrailsTag

Process the start tag

doEndTag

public void doEndTag()

Description copied from interface: GrailsTag

process the end tag

attributeValueOrNull

protected java.lang.String attributeValueOrNull(java.lang.String attributeName)

isKeepPrecedingWhiteSpace

public boolean isKeepPrecedingWhiteSpace()

Description copied from class: GroovySyntaxTag

Tags must return the correct value to indicate whether or not whitespace before this tag should be kept in the output.

This is for tags that must follow other tags, such as g:else or g:elseif that do not allow content between them and the previous tag, and need to swallow the whitespace between them.

Specified by:

isKeepPrecedingWhiteSpace in class GroovySyntaxTag

Returns:

true if any whitespace immediately before the tag should be kept in the output - false if it is to be discarded

isAllowPrecedingContent

public boolean isAllowPrecedingContent()

Description copied from class: GroovySyntaxTag

Tags must return the correct value to indicate whether or not non-whitespace content is permitted before this tag.

This is for tags that must follow other tags, such as g:else or g:elseif that do not allow content between them and the previous tag. It is simply used as a safety mechanism to trap incorrect usage of tags.

TODO rework this and combine with isKeepPrecedingWhiteSpace as really they are used in the same situations

Specified by:

isAllowPrecedingContent in class GroovySyntaxTag

Returns:

true if any content is allowed immediately before the tag - false if it is an error to have such content before it