AbstractImageDimensionProvider (Minis 6.16.0 API)

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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
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
`static String`	`HEIGHT` "height" standard html img attribute name
`static String`	`WIDTH` "width" standard html img attribute name

Constructor Summary
`AbstractImageDimensionProvider()`

Method Summary
`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, canCallListenerInterface, detach, getStatelessHint, isEnabled, isTemporary, onConfigure, onEvent, onException, onRemove, 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