org.apache.wicket.markup.parser.filter
Class WicketMessageTagHandler

java.lang.Object
  org.apache.wicket.markup.parser.AbstractMarkupFilter
      org.apache.wicket.markup.parser.filter.WicketMessageTagHandler

All Implemented Interfaces:

java.io.Serializable, IClusterable, IMarkupFilter, IComponentResolver

public final class WicketMessageTagHandler
extends AbstractMarkupFilter
implements IComponentResolver

This is a markup inline filter and a component resolver. It identifies wicket:message attributes and adds an attribute modifier to the component tag that can localize wicket:message="attr-name:i18n-key,attr-name-2:i18n-key-2,..." expressions, replacing values of attributes specified by attr-name with a localizer lookup with key i18n-key. If an attribute being localized has a set value that value will be used as the default value for the localization lookup. This handler also resolves and localizes raw markup with wicket:message attribute.

Author:

Juergen Donnerstag, Igor Vaynberg

See Also:

Serialized Form

Nested Class Summary

static class

WicketMessageTagHandler.AttributeLocalizer Attribute localizing behavior.

Field Summary

static Behavior	ATTRIBUTE_LOCALIZER singleton instance of WicketMessageTagHandler.AttributeLocalizer
static java.lang.String	WICKET_MESSAGE_CONTAINER_ID The id automatically assigned to tags with wicket:message attribute but without id

Constructor Summary

WicketMessageTagHandler()
Construct.

Method Summary

protected MarkupElement	onComponentTag(ComponentTag tag) Invoked when a ComponentTag was found.
Component	resolve(MarkupContainer container, MarkupStream markupStream, ComponentTag tag) Try to resolve a component.

Methods inherited from class org.apache.wicket.markup.parser.AbstractMarkupFilter

getNextFilter, nextElement, onSpecialTag, postProcess, setNextFilter

Methods inherited from class java.lang.Object

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

Field Detail

WICKET_MESSAGE_CONTAINER_ID

public static final java.lang.String WICKET_MESSAGE_CONTAINER_ID

The id automatically assigned to tags with wicket:message attribute but without id

See Also:

Constant Field Values

ATTRIBUTE_LOCALIZER

public static final Behavior ATTRIBUTE_LOCALIZER

singleton instance of WicketMessageTagHandler.AttributeLocalizer

Constructor Detail

WicketMessageTagHandler

public WicketMessageTagHandler()

Construct.

Method Detail

onComponentTag

protected final MarkupElement onComponentTag(ComponentTag tag)
                                      throws java.text.ParseException

Description copied from class: AbstractMarkupFilter

Invoked when a ComponentTag was found.

By default this method is also called for WicketTags.

Specified by:

onComponentTag in class AbstractMarkupFilter

Returns:

Usually the same as the tag attribute

Throws:

java.text.ParseException

resolve

public Component resolve(MarkupContainer container,
                         MarkupStream markupStream,
                         ComponentTag tag)

Description copied from interface: IComponentResolver

Try to resolve a component.

Specified by:

resolve in interface IComponentResolver

Parameters:

container - The container parsing its markup

markupStream - The current markupStream

tag - The current component tag while parsing the markup

Returns:

component or null if not found