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java.lang.Objectjavax.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.AbstractDataBoundFormElementTag
org.springframework.web.servlet.tags.form.AbstractHtmlElementTag
org.springframework.web.servlet.tags.form.LabelTag
public class LabelTag
Databinding-aware JSP tag for rendering an HTML 'label' element
that defines text that is associated with a single form element.
The 'for' attribute is required.
See the "formTags" showcase application that ships with the full Spring distribution for an example of this class in action.
| Field Summary |
|---|
| Fields inherited from class org.springframework.web.servlet.tags.form.AbstractHtmlElementTag |
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CLASS_ATTRIBUTE, DIR_ATTRIBUTE, LANG_ATTRIBUTE, ONCLICK_ATTRIBUTE, ONDBLCLICK_ATTRIBUTE, ONKEYDOWN_ATTRIBUTE, ONKEYPRESS_ATTRIBUTE, ONKEYUP_ATTRIBUTE, ONMOUSEDOWN_ATTRIBUTE, ONMOUSEMOVE_ATTRIBUTE, ONMOUSEOUT_ATTRIBUTE, ONMOUSEOVER_ATTRIBUTE, ONMOUSEUP_ATTRIBUTE, STYLE_ATTRIBUTE, TABINDEX_ATTRIBUTE, TITLE_ATTRIBUTE |
| Fields inherited from class org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag |
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COMMAND_NAME_VARIABLE_NAME, NESTED_PATH_VARIABLE_NAME |
| Fields inherited from class org.springframework.web.servlet.tags.RequestContextAwareTag |
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logger, REQUEST_CONTEXT_PAGE_ATTRIBUTE |
| Fields inherited from class javax.servlet.jsp.tagext.TagSupport |
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pageContext |
| Fields inherited from interface javax.servlet.jsp.tagext.IterationTag |
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EVAL_BODY_AGAIN |
| Fields inherited from interface javax.servlet.jsp.tagext.Tag |
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EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE |
| Constructor Summary | |
|---|---|
LabelTag()
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| Method Summary | |
|---|---|
protected String |
autogenerateFor()
Autogenerate the ' for' attribute value for this tag. |
int |
doEndTag()
Close the ' label' tag. |
void |
doFinally()
Disposes of the TagWriter instance. |
String |
getFor()
Get the value of the ' id' attribute. |
protected String |
getName()
Overrides getName() to always return null,
because the 'name' attribute is not supported by the
'label' tag. |
protected String |
resolveFor()
Determine the ' for' attribute value for this tag,
autogenerating one if none specified. |
void |
setFor(String forId)
Set the value of the ' for' attribute. |
protected int |
writeTagContent(TagWriter tagWriter)
Writes the opening ' label' tag and forces a block tag so
that body content is written correctly. |
| Methods inherited from class org.springframework.web.servlet.tags.form.AbstractHtmlElementTag |
|---|
getCssClass, getCssErrorClass, getCssStyle, getDir, getDynamicAttributes, getLang, getOnclick, getOndblclick, getOnkeydown, getOnkeypress, getOnkeyup, getOnmousedown, getOnmousemove, getOnmouseout, getOnmouseover, getOnmouseup, getTabindex, getTitle, isValidDynamicAttribute, resolveCssClass, setCssClass, setCssErrorClass, setCssStyle, setDir, setDynamicAttribute, setLang, setOnclick, setOndblclick, setOnkeydown, setOnkeypress, setOnkeyup, setOnmousedown, setOnmousemove, setOnmouseout, setOnmouseover, setOnmouseup, setTabindex, setTitle, writeDefaultAttributes, writeOptionalAttributes |
| Methods inherited from class org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag |
|---|
autogenerateId, convertToDisplayString, getBindStatus, getBoundValue, getEditor, getId, getNestedPath, getPath, getPropertyEditor, getPropertyPath, processFieldValue, resolveId, setId, setPath |
| Methods inherited from class org.springframework.web.servlet.tags.form.AbstractFormTag |
|---|
createTagWriter, doStartTagInternal, evaluate, evaluateBoolean, getDisplayString, getDisplayString, isDefaultHtmlEscape, writeOptionalAttribute |
| Methods inherited from class org.springframework.web.servlet.tags.HtmlEscapingAwareTag |
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isHtmlEscape, setHtmlEscape |
| Methods inherited from class org.springframework.web.servlet.tags.RequestContextAwareTag |
|---|
doCatch, doStartTag, getRequestContext |
| Methods inherited from class javax.servlet.jsp.tagext.TagSupport |
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doAfterBody, findAncestorWithClass, getParent, getValue, getValues, release, removeValue, setPageContext, setParent, setValue |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public LabelTag()
| Method Detail |
|---|
public void setFor(String forId)
for' attribute.
Defaults to the value of AbstractDataBoundFormElementTag.getPath(); may be a runtime expression.
IllegalArgumentException - if the supplied value is nullpublic String getFor()
id' attribute.
May be a runtime expression.
protected int writeTagContent(TagWriter tagWriter)
throws JspException
label' tag and forces a block tag so
that body content is written correctly.
writeTagContent in class AbstractFormTagTag.EVAL_BODY_INCLUDE
JspException
protected String getName()
throws JspException
getName() to always return null,
because the 'name' attribute is not supported by the
'label' tag.
getName in class AbstractDataBoundFormElementTagname' attribute
JspException
protected String resolveFor()
throws JspException
for' attribute value for this tag,
autogenerating one if none specified.
JspExceptiongetFor(),
autogenerateFor()
protected String autogenerateFor()
throws JspException
for' attribute value for this tag.
The default implementation delegates to AbstractDataBoundFormElementTag.getPropertyPath(),
deleting invalid characters (such as "[" or "]").
JspException
public int doEndTag()
throws JspException
label' tag.
doEndTag in interface TagdoEndTag in class TagSupportJspExceptionpublic void doFinally()
TagWriter instance.
doFinally in interface TryCatchFinallydoFinally in class AbstractDataBoundFormElementTag
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