org.w3c.mwi.mobileok.basic
Class ImageContent

java.lang.Object
  org.w3c.mwi.mobileok.basic.DecodedContent
      org.w3c.mwi.mobileok.basic.ImageContent

Direct Known Subclasses:

GifImageContent, JpegImageContent, NotSupportedImageContent

public abstract class ImageContent
extends DecodedContent

Abstract class that represents an image resource with a defined width and height.

The class extends Resource to add information about the image: format validation, image width, image height, and use of transparency. The class is more defined as an interface than as a real Resource implementation.

Version:

$Revision: 1.1 $

Author:

The W3C mobileOK Checker Task Force

Constructor Summary

ImageContent(java.net.URI uri, java.util.List<RetrievalElement> retrieved)
Creates a class instance bound to a URI.

Method Summary

abstract java.util.List<ValidationByteMessage>	getImageErrorMessageList() Returns the list of image format validation error messages.
abstract int	getImageHeight() Returns the height of the image.
abstract java.lang.String	getImageType() Returns the image content-type.
abstract int	getImageWidth() Returns the width of the image.
abstract boolean	hasTransparency() Returns true when the image uses transparency.
org.w3c.dom.Node	toMokiNode(org.w3c.dom.Document document, org.w3c.dom.Node parent) Serializes the content to its moki representation as a DOM node.

Methods inherited from class org.w3c.mwi.mobileok.basic.DecodedContent

addByteErrorMessages, addLineAndColumnMessages, isValid

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageContent

public ImageContent(java.net.URI uri,
                    java.util.List<RetrievalElement> retrieved)
             throws TestException

Creates a class instance bound to a URI.

The content is validated while it is instantiated.

Parameters:

uri - absolute URI of the resource.

retrieved - the retrieved representation of the resource.

Throws:

TestException - an unexpected error occurred while retrieving the resource.

Method Detail

getImageErrorMessageList

public abstract java.util.List<ValidationByteMessage> getImageErrorMessageList()

Returns the list of image format validation error messages.

Returns:

the list of validation error messages.

getImageType

public abstract java.lang.String getImageType()

Returns the image content-type.

Returns:

the image type

getImageHeight

public abstract int getImageHeight()

Returns the height of the image.

Returns:

the height of the image, in pixels.

getImageWidth

public abstract int getImageWidth()

Returns the width of the image.

Returns:

the width of the image, in pixels.

hasTransparency

public abstract boolean hasTransparency()

Returns true when the image uses transparency.

Support for transparency may depend on the image format. A false may thus also mean that transparency simply cannot be used.

Returns:

true when the image uses transparency, false otherwise.

toMokiNode

public org.w3c.dom.Node toMokiNode(org.w3c.dom.Document document,
                                   org.w3c.dom.Node parent)

Description copied from class: DecodedContent

Serializes the content to its moki representation as a DOM node.

Specified by:

toMokiNode in class DecodedContent

Parameters:

document - DOM document the created node should belong to

parent - DOM node to which the representation should be appended.

Returns:

the moki representation of the resource as a DOM node.