org.apache.myfaces.taglib.core
Class ValueChangeListenerTag

java.lang.Object
  javax.servlet.jsp.tagext.TagSupport
      org.apache.myfaces.taglib.core.ValueChangeListenerTag

All Implemented Interfaces:

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

public class ValueChangeListenerTag
extends javax.servlet.jsp.tagext.TagSupport

Adds the specified ValueChangeListener to the nearest parent UIComponent (which is expected to be a UIInput component). Whenever the form containing the parent UIComponent is submitted, an instance of the specified type is created. If the submitted value from the component is different from the component's current value then a ValueChangeEvent is queued. When the ValueChangeEvent is processed (at end of the validate phase for non-immediate components, or at end of the apply-request-values phase for immediate components) the object's processValueChange method is invoked.

Unless otherwise specified, all attributes accept static values or EL expressions.

Version:

$Revision: 670058 $ $Date: 2008-06-20 15:54:48 -0500 (Fri, 20 Jun 2008) $

Author:

Manfred Geiler (latest modification by $Author: skitching $)

See Also:

Serialized Form

Field Summary

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

ValueChangeListenerTag()

Method Summary

int	doStartTag()
void	setType(String type) The name of a Java class that implements ValueChangeListener.

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

ValueChangeListenerTag

public ValueChangeListenerTag()

Method Detail

setType

public void setType(String type)

The name of a Java class that implements ValueChangeListener.

doStartTag

public int doStartTag()
               throws javax.servlet.jsp.JspException

Specified by:

doStartTag in interface javax.servlet.jsp.tagext.Tag

Overrides:

doStartTag in class javax.servlet.jsp.tagext.TagSupport

Throws:

javax.servlet.jsp.JspException