org.zkoss.image.encoder
Class ImageEncoders

java.lang.Object
  org.zkoss.image.encoder.ImageEncoders

public class ImageEncoders
extends java.lang.Object

The factory of the image encodes.

Since:

3.0.7

Author:

tomyeh

Constructor Summary

ImageEncoders()

Method Summary

static java.lang.Class	getEncoderClass(java.lang.String format) Returns the class of the image encoder for the specified format, or null if not specified yet.
static ImageEncoder	newInstance(java.lang.String format) Instantiates and returns the image encoder for the specified format.
static java.lang.Class	setEncoderClass(java.lang.String format, java.lang.Class klass) Sets the class of the image encoder for the specified format.

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageEncoders

public ImageEncoders()

Method Detail

newInstance

public static ImageEncoder newInstance(java.lang.String format)

Instantiates and returns the image encoder for the specified format.

Parameters:

format - The image format of the ZK image being encoded to. It can be "png" or "jpeg".

Throws:

java.lang.IllegalArgumentException - if the encoder of the specified format is not found

SystemException - if failed to instantiate the encoder

setEncoderClass

public static java.lang.Class setEncoderClass(java.lang.String format,
                                              java.lang.Class klass)

Sets the class of the image encoder for the specified format.

An instance of the specified class is instantiated each time newInstance(java.lang.String) is called.

Parameters:

format - The image format of the ZK image being encoded to. It can be "png" or "jpeg".

klass - the class of the image encoder. It must implement ImageEncoder.

Returns:

the previous encoder, or null if not set yet.

getEncoderClass

public static java.lang.Class getEncoderClass(java.lang.String format)

Returns the class of the image encoder for the specified format, or null if not specified yet.