Package org.apache.wicket.extensions.breadcrumb

Class BreadCrumbBar

java.lang.Object

org.apache.wicket.Component

org.apache.wicket.MarkupContainer

org.apache.wicket.markup.html.WebMarkupContainer

org.apache.wicket.markup.html.panel.Panel

org.apache.wicket.extensions.breadcrumb.BreadCrumbBar

All Implemented Interfaces:

Serializable, Iterable<Component>, IEventSink, IEventSource, IBreadCrumbModel, IFeedbackContributor, IConverterLocator, IMetadataContext<Serializable,Component>, IQueueRegion, IHeaderContributor, IRequestableComponent, IHierarchical<Component>, IClusterable

public class BreadCrumbBar
extends Panel
implements IBreadCrumbModel

A component that renders bread crumbs. By default, it renders a horizontal list from left to right (oldest left) with bread crumb links and a ' / ' as a separator, e.g.

 first / second / third
 

Delegates how the bread crumb model works to DefaultBreadCrumbsModel.

Override and provide your own markup file if you want to work with other elements, e.g. uls instead of spans.

Author:

Eelco Hillenius

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	BreadCrumbBar.BreadCrumbsListView	List view for rendering the bread crumbs.

Field Summary

Fields inherited from class org.apache.wicket.markup.html.panel.Panel

PANEL

Fields inherited from class org.apache.wicket.Component

ENABLE, FLAG_INITIALIZED, FLAG_RESERVED1, FLAG_RESERVED2, FLAG_RESERVED3, FLAG_RESERVED4, FLAG_RESERVED5, FLAG_RESERVED8, PARENT_PATH, PATH_SEPARATOR, RENDER, RFLAG_CONTAINER_DEQUEING, RFLAG_CONTAINER_HAS_REMOVALS

Constructor Summary

Constructors

Constructor	Description
BreadCrumbBar(String id)	Construct.

Method Summary

Modifier and Type	Method	Description
void	addListener(IBreadCrumbModelListener listener)	Adds a bread crumb model listener.
List<IBreadCrumbParticipant>	allBreadCrumbParticipants()	Lists the bread crumb participants in this model.
IBreadCrumbParticipant	getActive()	Gets the currently active participant, if any.
protected boolean	getEnableLinkToCurrent()	Gets whether the current bread crumb should be displayed as a link (e.g.
protected String	getSeparatorMarkup()
protected Component	newBreadCrumbComponent(String id, long index, int total, IBreadCrumbParticipant breadCrumbParticipant)	Creates a new bread crumb component.
protected void	onDetach()	Called to allow a component to detach resources after use.
void	removeListener(IBreadCrumbModelListener listener)	Removes a bread crumb model listener.
void	setActive(IBreadCrumbParticipant breadCrumbParticipant)	Sets the bread crumb as the active one.

Methods inherited from class org.apache.wicket.markup.html.panel.Panel

getRegionMarkup, newMarkupSourcingStrategy

Methods inherited from class org.apache.wicket.markup.html.WebMarkupContainer

getWebApplication, getWebPage, getWebRequest, getWebResponse, getWebSession

Methods inherited from class org.apache.wicket.MarkupContainer

add, addDequeuedComponent, addOrReplace, autoAdd, canDequeueTag, contains, dequeue, dequeue, dequeuePreamble, findChildComponent, findComponentToDequeue, get, getAssociatedMarkup, getAssociatedMarkupStream, getMarkup, getMarkupType, internalAdd, internalInitialize, iterator, iterator, newDequeueContext, onComponentTagBody, onInitialize, onRender, queue, remove, remove, removeAll, renderAll, renderAssociatedMarkup, renderNext, replace, setDefaultModel, size, stream, streamChildren, toString, toString, visitChildren, visitChildren

Methods inherited from class org.apache.wicket.Component

add, addStateChange, beforeRender, canCallListener, canCallListenerAfterExpiry, checkComponentTag, checkComponentTagAttribute, checkHierarchyChange, clearOriginalDestination, configure, continueToOriginalDestination, createConverter, debug, detach, detachModel, detachModels, determineVisibility, error, exceptionMessage, fatal, findMarkupStream, findPage, findParent, findParentWithAssociatedMarkup, getAjaxRegionMarkupId, getApplication, getBehaviorById, getBehaviorId, getBehaviors, getBehaviors, getClassRelativePath, getConverter, getDefaultModel, getDefaultModelObject, getDefaultModelObjectAsString, getDefaultModelObjectAsString, getEscapeModelStrings, getFeedbackMessages, getFlag, getId, getInnermostModel, getInnermostModel, getLocale, getLocalizer, getMarkup, getMarkupAttributes, getMarkupId, getMarkupId, getMarkupIdFromMarkup, getMarkupIdImpl, getMarkupSourcingStrategy, getMarkupTag, getMetaData, getModelComparator, getOutputMarkupId, getOutputMarkupPlaceholderTag, getPage, getPageRelativePath, getParent, getPath, getRenderBodyOnly, getRequest, getRequestCycle, getRequestFlag, getResponse, getSession, getSizeInBytes, getStatelessHint, getString, getString, getString, getStyle, getVariation, hasBeenRendered, hasErrorMessage, hasFeedbackMessage, info, initModel, internalOnModelChanged, internalRenderComponent, internalRenderHead, isActionAuthorized, isAuto, isBehaviorAccepted, isEnableAllowed, isEnabled, isEnabledInHierarchy, isIgnoreAttributeModifier, isInitialized, isRenderAllowed, isRendering, isStateless, isVersioned, isVisibilityAllowed, isVisible, isVisibleInHierarchy, markRendering, modelChanged, modelChanging, onAfterRender, onBeforeRender, onComponentTag, onConfigure, onEvent, onModelChanged, onModelChanging, onReAdd, onRemove, redirectToInterceptPage, remove, remove, render, renderComponentTag, rendered, renderHead, renderPart, renderPlaceholderTag, replaceComponentTagBody, replaceWith, sameInnermostModel, sameInnermostModel, send, setAuto, setDefaultModelObject, setEnabled, setEscapeModelStrings, setFlag, setIgnoreAttributeModifier, setMarkup, setMarkupId, setMarkupIdImpl, setMetaData, setOutputMarkupId, setOutputMarkupPlaceholderTag, setParent, setRenderBodyOnly, setResponsePage, setResponsePage, setResponsePage, setVersioned, setVisibilityAllowed, setVisible, success, urlFor, urlFor, urlFor, urlForListener, urlForListener, visitParents, visitParents, warn, wrap

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.wicket.IQueueRegion

dequeue, newDequeueContext

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Details

BreadCrumbBar

public BreadCrumbBar(String id)

Construct.

Parameters:

id - Component id

Method Details

addListener

public void addListener(IBreadCrumbModelListener listener)

Description copied from interface: IBreadCrumbModel

Adds a bread crumb model listener.

Specified by:

addListener in interface IBreadCrumbModel

Parameters:

listener - The listener to add

allBreadCrumbParticipants

public List<IBreadCrumbParticipant> allBreadCrumbParticipants()

Description copied from interface: IBreadCrumbModel

Lists the bread crumb participants in this model.

Specified by:

allBreadCrumbParticipants in interface IBreadCrumbModel

Returns:

The bread crumbs participants, as list with bread crumb participants.

getActive

public IBreadCrumbParticipant getActive()

Description copied from interface: IBreadCrumbModel

Gets the currently active participant, if any.

Specified by:

getActive in interface IBreadCrumbModel

Returns:

The currently active participant, may be null

removeListener

public void removeListener(IBreadCrumbModelListener listener)

Description copied from interface: IBreadCrumbModel

Removes a bread crumb model listener.

Specified by:

removeListener in interface IBreadCrumbModel

Parameters:

listener - The listener to remove

setActive

public void setActive(IBreadCrumbParticipant breadCrumbParticipant)

Description copied from interface: IBreadCrumbModel

Sets the bread crumb as the active one. Implementations should call bread crumb added when the bread crumb was not yet part of the model, and bread crumb removed for every crumb that was removed as the result of this call.

Specified by:

setActive in interface IBreadCrumbModel

Parameters:

breadCrumbParticipant - The bread crump that should be set as the currently active

getEnableLinkToCurrent

protected boolean getEnableLinkToCurrent()

Gets whether the current bread crumb should be displayed as a link (e.g. for refreshing) or as a disabled link (effectively just a label). The latter is the default. Override if you want different behavior.

Returns:

Whether the current bread crumb should be displayed as a link; this method returns false

getSeparatorMarkup

protected String getSeparatorMarkup()

Returns:

markup used as a separator between breadcrumbs. By default / is used, but >> is also a popular choice.

newBreadCrumbComponent

protected Component newBreadCrumbComponent(String id,
 long index,
 int total,
 IBreadCrumbParticipant breadCrumbParticipant)

Creates a new bread crumb component. That component will be rendered as part of the bread crumbs list (which is a <ul> <li> structure).

Parameters:

id - The component id

index - The index of the bread crumb

total - The total number of bread crumbs in the current model

breadCrumbParticipant - the bread crumb

Returns:

A new bread crumb component

onDetach

protected void onDetach()

Description copied from class: Component

Called to allow a component to detach resources after use. Overrides of this method MUST call the super implementation, the most logical place to do this is the last line of the override method.

Overrides:

onDetach in class MarkupContainer