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OptionsTag (Spring Framework API 2.1) - Spring Framework 2.1.0 API 文档英文版

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org.springframework.web.servlet.tags.form
Class OptionsTag

java.lang.Object
  javax.servlet.jsp.tagext.TagSupport
      org.springframework.web.servlet.tags.RequestContextAwareTag
          org.springframework.web.servlet.tags.HtmlEscapingAwareTag
              org.springframework.web.servlet.tags.form.AbstractFormTag
                  org.springframework.web.servlet.tags.form.OptionsTag

All Implemented Interfaces:

Serializable, IterationTag, JspTag, Tag, TryCatchFinally

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public class OptionsTag
extends AbstractFormTag

Convenient tag that allows one to supply a collection of objects that are to be rendered as 'option' tags within a 'select' tag.

Must be used within a 'select' tag.

Since:

2.0

Author:

Rob Harrop

See Also:

Serialized Form

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Field Summary

 

Fields inherited from class org.springframework.web.servlet.tags.RequestContextAwareTag
logger, REQUEST_CONTEXT_PAGE_ATTRIBUTE

 

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
OptionsTag()

 

Method Summary
protected  String	getItemLabel()           Get the name of the property mapped to the label (inner text) of the 'option' tag.
protected  Object	getItems()           Get the Collection, Map or array of objects used to generate the inner 'option' tags.
protected  String	getItemValue()
void	setItemLabel(String itemLabel)           Set the name of the property mapped to the label (inner text) of the 'option' tag.
void	setItems(Object items)           Set the Collection, Map or array of objects used to generate the inner 'option' tags.
void	setItemValue(String itemValue)           Set the name of the property mapped to the 'value' attribute of the 'option' tag.
protected  int	writeTagContent(TagWriter tagWriter)           Subclasses should implement this method to perform tag content rendering.

 

Methods inherited from class org.springframework.web.servlet.tags.form.AbstractFormTag
createTagWriter, doStartTagInternal, evaluate, getDisplayString, getDisplayString, writeOptionalAttribute

 

Methods inherited from class org.springframework.web.servlet.tags.HtmlEscapingAwareTag
isHtmlEscape, setHtmlEscape

 

Methods inherited from class org.springframework.web.servlet.tags.RequestContextAwareTag
doCatch, doFinally, doStartTag, getRequestContext

 

Methods inherited from class javax.servlet.jsp.tagext.TagSupport
doAfterBody, doEndTag, findAncestorWithClass, getId, getParent, getValue, getValues, release, removeValue, setId, setPageContext, setParent, setValue

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Constructor Detail

OptionsTag

public OptionsTag()

Method Detail

setItems

public void setItems(Object items)

Set the Collection, Map or array of objects used to generate the inner 'option' tags.

Required when wishing to render 'option' tags from an array, Collection or Map.

Typically a runtime expression.

Parameters:

items - said items

Throws:

IllegalArgumentException - if the supplied items instance is null

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getItems

protected Object getItems()

Get the Collection, Map or array of objects used to generate the inner 'option' tags.

Typically a runtime expression.

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setItemValue

public void setItemValue(String itemValue)

Set the name of the property mapped to the 'value' attribute of the 'option' tag.

Required when wishing to render 'option' tags from an array or Collection.

May be a runtime expression.

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getItemValue

protected String getItemValue()

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setItemLabel

public void setItemLabel(String itemLabel)

Set the name of the property mapped to the label (inner text) of the 'option' tag.

May be a runtime expression.

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getItemLabel

protected String getItemLabel()

Get the name of the property mapped to the label (inner text) of the 'option' tag.

May be a runtime expression.

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writeTagContent

protected int writeTagContent(TagWriter tagWriter)
                       throws JspException

Description copied from class: AbstractFormTag

Subclasses should implement this method to perform tag content rendering.

Specified by:

writeTagContent in class AbstractFormTag

Returns:

valid tag render instruction as per Tag.doStartTag().

Throws:

JspException

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