org.apache.tapestry.html
Class Rollover

java.lang.Object
  org.apache.hivemind.impl.BaseLocatable
      org.apache.tapestry.AbstractComponent
          org.apache.tapestry.html.Rollover

All Implemented Interfaces:

org.apache.hivemind.Locatable, org.apache.hivemind.LocationHolder, IComponent, IDirectEvent, Component, IRender

public abstract class Rollover
extends AbstractComponent

Combines a link component (such as DirectLink) with an <img> and JavaScript code to create a rollover effect that works with both Netscape Navigator and Internet Explorer. [ Component Reference ]

Author:

Howard Lewis Ship

Field Summary

Fields inherited from class org.apache.tapestry.AbstractComponent

_body, _bodyCount

Constructor Summary

Rollover()

Method Summary

protected String	getAssetURL(IAsset asset) Converts an IAssetbinding into a usable URL.
abstract IAsset	getDisabled()
abstract IAsset	getImage()
abstract IAsset	getMouseOut()
abstract IAsset	getMouseOver()
abstract IScript	getScript()
protected void	renderComponent(IMarkupWriter writer, IRequestCycle cycle) Invoked by AbstractComponent.render(IMarkupWriter, IRequestCycle)to actually render the component (with any parameter values already set).

Methods inherited from class org.apache.tapestry.AbstractComponent

addAsset, addBody, addComponent, checkActiveLock, cleanupAfterRender, enterActiveState, equals, finishLoad, finishLoad, generateClientId, getAsset, getAssets, getBeans, getBinding, getBindingNames, getBindings, getBody, getBodyCount, getBoundId, getClientId, getComponent, getComponents, getContainedComponent, getContainedRenderers, getContainer, getEventInvoker, getExtendedId, getId, getIdPath, getInnerRenderers, getListeners, getMessages, getNamespace, getPage, getRenderWorker, getSpecification, getSpecifiedId, getTemplateTagName, hasEvents, hashCode, isInActiveState, isParameterBound, isRendering, isStateful, pageEndRender, peekClientId, prepareForRender, render, renderBody, renderIdAttribute, renderInformalParameters, setBinding, setClientId, setContainedComponent, setContainer, setHasEvents, setId, setNamespace, setPage, setTemplateTagName, toString, triggerEvent

Methods inherited from class org.apache.hivemind.impl.BaseLocatable

getLocation, setLocation

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.hivemind.LocationHolder

setLocation

Methods inherited from interface org.apache.hivemind.Locatable

getLocation

Constructor Detail

Rollover

public Rollover()

Method Detail

getAssetURL

protected String getAssetURL(IAsset asset)

Converts an IAssetbinding into a usable URL. Returns null if the binding does not exist or the binding's value is null.

Parameters:

asset - The asset to generate a url for.

Returns:

The url to the asset resource, or null if it couldn't be generated.

renderComponent

protected void renderComponent(IMarkupWriter writer,
                               IRequestCycle cycle)

Description copied from class: AbstractComponent

Invoked by AbstractComponent.render(IMarkupWriter, IRequestCycle)to actually render the component (with any parameter values already set). This is the method that subclasses must implement.

Specified by:

renderComponent in class AbstractComponent

getScript

public abstract IScript getScript()

getMouseOut

public abstract IAsset getMouseOut()

getDisabled

public abstract IAsset getDisabled()

getMouseOver

public abstract IAsset getMouseOver()

getImage

public abstract IAsset getImage()