net.sf.jzeno.echo.components
Class PreloadImagesComponent

java.lang.Object
  nextapp.echo.AbstractComponent
      net.sf.jzeno.echo.components.CustomComponent
          net.sf.jzeno.echo.components.CustomRenderingComponent
              net.sf.jzeno.echo.components.PreloadImagesComponent

All Implemented Interfaces:

java.io.Serializable, BindingTarget, PropertyComponent, RebindableComponent, EventSink, EventSource, Component, FastComponent, FastComponentContainer

public class PreloadImagesComponent
extends CustomRenderingComponent

Component that triggers pre-loading of images into the browser cache. This component was created to circumvent bugs in IE's image caching. It will preload all images in the specified path (relative to the 'images' folder in your web-app folder), that en in extensions : .gif,.GIF,.jpg,.JPG,.jpeg,.JPEG,.png,.PNG By default it will preload all images in [images], unless you specify the path property.

See Also:

Serialized Form

Field Summary

Fields inherited from interface nextapp.echo.Component

BACKGROUND_CHANGED_PROPERTY, CHILDREN_CHANGED_PROPERTY, ENABLED_CHANGED_PROPERTY, FONT_CHANGED_PROPERTY, FOREGROUND_CHANGED_PROPERTY, IDENTIFIER_CHANGED_PROPERTY, LOCALE_CHANGED_PROPERTY, MODEL_CHANGED_PROPERTY, SELECTABLE_CHANGED_PROPERTY, STYLE_BACKGROUND, STYLE_FONT, STYLE_FOREGROUND, UPDATE_PROPERTY, VISIBLE_CHANGED_PROPERTY

Constructor Summary

PreloadImagesComponent()

Method Summary

protected java.lang.String	getHtml() Render your component into HTML here.
protected java.lang.String	getJavascript() Return some javascript that you which to execute for the current rendering of your component.
protected java.lang.String	getJavascriptLibrary() If you whish to use some javascript functions/libraries you can return those in this method.
java.lang.String	getPath()
void	setPath(java.lang.String path)
protected void	update(java.lang.String input) If you want to send information from you client back to the server to update state there, you can use the createUpdateScript function to generate a javascript function-call that will trigger an update.

Methods inherited from class net.sf.jzeno.echo.components.CustomRenderingComponent

createUpdateScript, isRebound, rebind, resetRebound

Methods inherited from class net.sf.jzeno.echo.components.CustomComponent

addValidator, fireActionEvent, fireActionEvent, fireActionEvent, getActionCommand, getBean, getBeanClass, getDecorator, getNullObject, getProperty, getValidationErrors, getValidators, getValue, isBound, isMarkedInvalid, isReadOnly, isRequired, isValid, markInvalid, markValid, preRender, removeValidator, setActionCommand, setBean, setBeanClass, setDecorator, setNullObject, setProperty, setReadOnly, setRequired, setValue, traceValue, validate

Methods inherited from class nextapp.echo.AbstractComponent

add, add, addHierarchyListener, addPropertyChangeListener, applyStyle, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getClientId, getComponent, getComponentCount, getComponents, getEchoInstance, getFont, getForeground, getIdentifier, getListenerList, getLocale, getParent, indexOf, init, isAncestorOf, isDifferent, isEnabled, isFocused, isRecursivelyVisible, isRegistered, isSelectableForScriptRecorder, isShowing, isVisible, processHierarchyEvent, remove, remove, removeAll, removeHierarchyListener, removePropertyChangeListener, setBackground, setClientId, setEnabled, setFocused, setFont, setForeground, setIdentifier, setLocale, setParent, setRegistered, setSelectableForScriptRecorder, setVisible, update

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PreloadImagesComponent

public PreloadImagesComponent()

Method Detail

getPath

public java.lang.String getPath()

setPath

public void setPath(java.lang.String path)

getHtml

protected java.lang.String getHtml()

Description copied from class: CustomRenderingComponent

Render your component into HTML here.

Specified by:

getHtml in class CustomRenderingComponent

Returns:

getJavascript

protected java.lang.String getJavascript()

Description copied from class: CustomRenderingComponent

Return some javascript that you which to execute for the current rendering of your component.

Specified by:

getJavascript in class CustomRenderingComponent

Returns:

getJavascriptLibrary

protected java.lang.String getJavascriptLibrary()

Description copied from class: CustomRenderingComponent

If you whish to use some javascript functions/libraries you can return those in this method. If you return null, no javascript will be available to you rendered HTML. The implementation could take the form of returning a string constant, or it could load a .js file from disk, and return the content, or it could load a JavaScript library as a resource from you application classpath, etc...

Specified by:

getJavascriptLibrary in class CustomRenderingComponent

Returns:

update

protected void update(java.lang.String input)

Description copied from class: CustomRenderingComponent

If you want to send information from you client back to the server to update state there, you can use the createUpdateScript function to generate a javascript function-call that will trigger an update.

Specified by:

update in class CustomRenderingComponent