Package 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 Description
    ValueChangeListenerTag()  

  • Method Summary

    Modifier and Type Method 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 Details

  • Method Details

    • 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