com.sun.faces.taglib.jsf_core

Class ValueChangeListenerTag

java.lang.Object

jakarta.servlet.jsp.tagext.TagSupport

com.sun.faces.taglib.jsf_core.ValueChangeListenerTag

All Implemented Interfaces:

jakarta.servlet.jsp.tagext.IterationTag, jakarta.servlet.jsp.tagext.JspTag, jakarta.servlet.jsp.tagext.Tag, Serializable

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

Tag implementation that creates a ValueChangeListener instance and registers it on the UIComponent associated with our most immediate surrounding instance of a tag whose implementation class is a subclass of UIComponentClassicTagBase. This tag creates no output to the page currently being created.

This class may be used directly to implement a generic event handler registration tag (based on the fully qualified Java class name specified by the type attribute), or as a base class for tag instances that support specific ValueChangeListener subclasses.

Subclasses of this class must implement the createValueChangeListener() method, which creates and returns a ValueChangeListener instance. Any configuration properties that are required by this ValueChangeListener instance must have been set by the createValueChangeListener() method. Generally, this occurs by copying corresponding attribute values on the tag instance.

This tag creates no output to the page currently being created. It is used solely for the side effect of ValueChangeListener creation.

See Also:

Serialized Form

Field Summary

Fields inherited from class jakarta.servlet.jsp.tagext.TagSupport

id, pageContext

Fields inherited from interface jakarta.servlet.jsp.tagext.IterationTag

EVAL_BODY_AGAIN

Fields inherited from interface jakarta.servlet.jsp.tagext.Tag

EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE

Constructor Summary

Constructors

Constructor and Description
ValueChangeListenerTag()

Method Summary

Modifier and Type	Method and Description
int	doStartTag() Create a new instance of the specified ValueChangeListener class, and register it with the UIComponent instance associated with our most immediately surrounding UIComponentClassicTagBase instance, if the UIComponent instance was created by this execution of the containing JSP page.
void	release() Release references to any acquired resources.
void	setBinding(jakarta.el.ValueExpression binding)
void	setType(jakarta.el.ValueExpression type) Set the fully qualified class name of the ValueChangeListener instance to be created.

Methods inherited from class jakarta.servlet.jsp.tagext.TagSupport

doAfterBody, doEndTag, findAncestorWithClass, getId, getParent, getValue, getValues, 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(jakarta.el.ValueExpression type)

Set the fully qualified class name of the ValueChangeListener instance to be created.

Parameters:

type - The new class name

setBinding

public void setBinding(jakarta.el.ValueExpression binding)

doStartTag

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

Create a new instance of the specified ValueChangeListener class, and register it with the UIComponent instance associated with our most immediately surrounding UIComponentClassicTagBase instance, if the UIComponent instance was created by this execution of the containing JSP page.

Specified by:

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

Overrides:

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

Throws:

jakarta.servlet.jsp.JspException - if a JSP error occurs

release

public void release()

Release references to any acquired resources.

Specified by:

release in interface jakarta.servlet.jsp.tagext.Tag

Overrides:

release in class jakarta.servlet.jsp.tagext.TagSupport