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:

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

Constructor Summary

WicketMessageTagHandler()
Construct.

Method Summary

MarkupElement	nextTag() Get the next MarkupElement from the parent MarkupFilter and handle it if the specific filter criteria are met.
boolean	resolve(MarkupContainer container, MarkupStream markupStream, ComponentTag tag) Try to resolve the tag, then create a component, add it to the container and render it.

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

getParent, nextComponentTag, setParent

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 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 IBehavior ATTRIBUTE_LOCALIZER

singleton instance of WicketMessageTagHandler.AttributeLocalizer

Constructor Detail

WicketMessageTagHandler

public WicketMessageTagHandler()

Construct.

Method Detail

nextTag

public final MarkupElement nextTag()
                            throws ParseException

Description copied from interface: IMarkupFilter

Get the next MarkupElement from the parent MarkupFilter and handle it if the specific filter criteria are met. Depending on the filter, it may return the MarkupElement unchanged, modified or remove it by asking the parent handler for the next tag.

Specified by:

nextTag in interface IMarkupFilter

Returns:

The next tag to be processed. Null, if not more tags are available

Throws:

ParseException

See Also:

IMarkupFilter.nextTag()

resolve

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

Description copied from interface: IComponentResolver

Try to resolve the tag, then create a component, add it to the container and render it.

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:

True if component-id was handled by the resolver, false otherwise.

See Also:

IComponentResolver.resolve(org.apache.wicket.MarkupContainer, org.apache.wicket.markup.MarkupStream, org.apache.wicket.markup.ComponentTag)