Package org.wicketstuff.minis.behavior.image

Class AbstractImageDimensionProvider

java.lang.Object

org.apache.wicket.behavior.Behavior

org.wicketstuff.minis.behavior.image.AbstractImageDimensionProvider

All Implemented Interfaces:

Serializable, IComponentAwareEventSink, IComponentAwareHeaderContributor, IClusterable

Direct Known Subclasses:

ImageDimensionProvider

public abstract class AbstractImageDimensionProvider
extends Behavior

This behavior can be added to Image components to render width and height attributes in the markup. The exact way to retrieve the dimension information is left for the subclasses.

Providing dimension information for elements makes page rendering faster.

Author:

akiraly

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static String	HEIGHT	"height" standard html img attribute name
static String	WIDTH	"width" standard html img attribute name

Constructor Summary

Constructors

Constructor	Description
AbstractImageDimensionProvider()

Method Summary

Modifier and Type	Method	Description
protected abstract ImageDimension	getImageDimension(Component component, ComponentTag tag)	Gets the image dimension.
void	onComponentTag(Component component, ComponentTag tag)

Methods inherited from class org.apache.wicket.behavior.Behavior

afterRender, beforeRender, bind, canCallListener, detach, getStatelessHint, isEnabled, isTemporary, onAttribute, onConfigure, onEvent, onException, onRemove, onTag, renderHead, unbind

Methods inherited from class java.lang.Object

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

Field Detail

WIDTH

public static final String WIDTH

"width" standard html img attribute name

See Also:

Constant Field Values

HEIGHT

public static final String HEIGHT

"height" standard html img attribute name

See Also:

Constant Field Values

Constructor Detail

AbstractImageDimensionProvider

public AbstractImageDimensionProvider()

Method Detail

getImageDimension

protected abstract ImageDimension getImageDimension(Component component,
                                                    ComponentTag tag)

Gets the image dimension. By default it is called by onComponentTag(Component, ComponentTag).

Parameters:

component - "the component that renders this tag currently"

tag - "the tag that is rendered"

Returns:

image dimension used for width and height, can be null

onComponentTag

public void onComponentTag(Component component,
                           ComponentTag tag)

Overrides:

onComponentTag in class Behavior