org.apache.tapestry.components
Class Conditional

java.lang.Object
  |
  +--org.apache.tapestry.spec.BaseLocatable
        |
        +--org.apache.tapestry.AbstractComponent
              |
              +--org.apache.tapestry.components.Conditional
All Implemented Interfaces:
IComponent, ILocatable, ILocationHolder, IRender

public abstract class Conditional
extends AbstractComponent

A conditional element on a page which will render its wrapped elements zero or one times. [Component Reference]

Version:
$Id: Conditional.java,v 1.2 2003/03/15 21:22:16 hlship Exp $
Author:
Howard Lewis Ship

Constructor Summary
Conditional()
           
 
Method Summary
abstract  boolean getCondition()
           
abstract  boolean getInvert()
           
protected  void renderComponent(IMarkupWriter writer, IRequestCycle cycle)
          Renders its wrapped components only if the condition is true (technically, if condition matches invert).
 
Methods inherited from class org.apache.tapestry.AbstractComponent
addAsset, addBody, addComponent, cleanupAfterRender, finishLoad, finishLoad, fireObservedChange, fireObservedChange, fireObservedChange, fireObservedChange, fireObservedChange, fireObservedChange, fireObservedChange, fireObservedChange, fireObservedChange, format, format, format, format, formatString, formatString, formatString, formatString, generateAttributes, getAsset, getAssets, getBeans, getBinding, getBindingNames, getBindings, getBody, getBodyCount, getChangeObserver, getComponent, getComponents, getContainer, getExtendedId, getId, getIdPath, getListeners, getMessage, getMessages, getNamespace, getPage, getSpecification, getString, pageEndRender, prepareForRender, render, renderBody, renderInformalParameters, setBinding, setContainer, setId, setNamespace, setPage, setSpecification, toString
 
Methods inherited from class org.apache.tapestry.spec.BaseLocatable
getLocation, setLocation
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface org.apache.tapestry.ILocationHolder
setLocation
 
Methods inherited from interface org.apache.tapestry.ILocatable
getLocation
 

Constructor Detail

Conditional

public Conditional()
Method Detail

renderComponent

protected void renderComponent(IMarkupWriter writer,
                               IRequestCycle cycle)
Renders its wrapped components only if the condition is true (technically, if condition matches invert).
Overrides:
renderComponent in class AbstractComponent

getCondition

public abstract boolean getCondition()

getInvert

public abstract boolean getInvert()