org.ajax4jsf.resource
Class ImageRenderer

java.lang.Object
  org.ajax4jsf.resource.BaseResourceRenderer
      org.ajax4jsf.resource.ImageRenderer

All Implemented Interfaces:

org.ajax4jsf.resource.ResourceRenderer

Direct Known Subclasses:

GifRenderer, JpegRenderer, Png8Renderer, PngRenderer

public abstract class ImageRenderer
extends BaseResourceRenderer

Version:

$Revision: 1.1.2.1 $ $Date: 2007/01/09 18:57:06 $

Author:

asmirnov@exadel.com (latest modification by $Author: alexsmirnov $)

Constructor Summary

ImageRenderer()

Method Summary

java.awt.image.BufferedImage	createImage(int width, int height) Create blank BufferedImage for paint.
protected void	customEncode(org.ajax4jsf.resource.InternetResource resource, javax.faces.context.FacesContext context, java.lang.Object data) Template method for customaize encoding for component.
protected java.lang.String[][]	getCommonAttrs()
protected java.lang.String	getHrefAttr()
abstract int	getImageType()
protected java.lang.String	getTag()
abstract void	sendImage(org.ajax4jsf.resource.ResourceContext context, java.awt.image.RenderedImage image) Send BufferedImage to response in concrete format (GIF,Jpeg,PNG)

Methods inherited from class org.ajax4jsf.resource.BaseResourceRenderer

encode, encode, encodeBegin, encodeEnd, getData, requireFacesContext, send, sendStream

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.ajax4jsf.resource.ResourceRenderer

getContentType

Constructor Detail

ImageRenderer

public ImageRenderer()

Method Detail

getCommonAttrs

protected java.lang.String[][] getCommonAttrs()

Specified by:

getCommonAttrs in class BaseResourceRenderer

Returns:

Returns the commonAttrs.

getHrefAttr

protected java.lang.String getHrefAttr()

Specified by:

getHrefAttr in class BaseResourceRenderer

Returns:

Returns the hrefAttr.

getTag

protected java.lang.String getTag()

Specified by:

getTag in class BaseResourceRenderer

Returns:

Returns the tag.

sendImage

public abstract void sendImage(org.ajax4jsf.resource.ResourceContext context,
                               java.awt.image.RenderedImage image)
                        throws java.io.IOException

Send BufferedImage to response in concrete format (GIF,Jpeg,PNG)

Parameters:

context - - current faces context.

image - - imaje to send

Throws:

java.io.IOException

getImageType

public abstract int getImageType()

Returns:

type of image for create BufferedImage

createImage

public java.awt.image.BufferedImage createImage(int width,
                                                int height)

Create blank BufferedImage for paint. Type of image determined by current renderer.

Parameters:

width -

height -

Returns:

new image

customEncode

protected void customEncode(org.ajax4jsf.resource.InternetResource resource,
                            javax.faces.context.FacesContext context,
                            java.lang.Object data)
                     throws java.io.IOException

Description copied from class: BaseResourceRenderer

Template method for customaize encoding for component. can insert size etc. attributes, child tags etc.

Overrides:

customEncode in class BaseResourceRenderer

Throws:

java.io.IOException