org.hippoecm.frontend.model

Class AbstractProvider<T,M extends org.apache.wicket.model.IModel>

java.lang.Object

org.hippoecm.frontend.model.ItemModelWrapper<T>

org.hippoecm.frontend.model.AbstractProvider<T,M>

All Implemented Interfaces:

Serializable, org.apache.wicket.model.IChainingModel<T>, org.apache.wicket.model.IDetachable, org.apache.wicket.model.IModel<T>, org.apache.wicket.util.io.IClusterable

Direct Known Subclasses:

ChildNodeProvider, PropertyValueProvider

public abstract class AbstractProvider<T,M extends org.apache.wicket.model.IModel>
extends ItemModelWrapper<T>

Provider that enumerates a list of models based on a JcrItemModel. It can be used to uniformly manipulate such lists.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected LinkedList<M>	elements

Constructor Summary

Constructors

Constructor and Description
AbstractProvider(JcrItemModel itemModel)

Method Summary

Modifier and Type	Method and Description
abstract void	addNew() Add a new element.
void	detach()
abstract ModelPathElement	getFieldElement(M model) Retrieve the ModelPathElement to access an element.
Iterator<M>	iterator(int first, int count) Iterate over the provided elements.
protected void	load()
protected abstract void	loadElements() Method to be overridden by subclasses, to populate the list of elements.
abstract void	moveUp(M model) Move a model up one position.
void	refresh() Force a reloading of items from the session.
abstract void	remove(M model) Remove a model from the list.
void	setChainedModel(org.apache.wicket.model.IModel model)
int	size() Count the number of elements

Methods inherited from class org.hippoecm.frontend.model.ItemModelWrapper

getChainedModel, getItemModel, getObject, setObject

Methods inherited from class java.lang.Object

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

Field Detail

elements

protected transient LinkedList<M extends org.apache.wicket.model.IModel> elements

Constructor Detail

AbstractProvider

public AbstractProvider(JcrItemModel itemModel)

Method Detail

refresh

public void refresh()

Force a reloading of items from the session.

setChainedModel

public void setChainedModel(org.apache.wicket.model.IModel model)

Specified by:

setChainedModel in interface org.apache.wicket.model.IChainingModel<T>

Overrides:

setChainedModel in class ItemModelWrapper<T>

detach

public void detach()

Specified by:

detach in interface org.apache.wicket.model.IDetachable

Overrides:

detach in class ItemModelWrapper<T>

iterator

public Iterator<M> iterator(int first,
                            int count)

Iterate over the provided elements.

Parameters:

first -

count -

Returns:

iterator over the elements

size

public int size()

Count the number of elements

Returns:

the number of elements provided

addNew

public abstract void addNew()

Add a new element.

remove

public abstract void remove(M model)

Remove a model from the list.

Parameters:

model - the model to remove

moveUp

public abstract void moveUp(M model)

Move a model up one position.

Parameters:

model - the model to move

getFieldElement

public abstract ModelPathElement getFieldElement(M model)

Retrieve the ModelPathElement to access an element.

Parameters:

model - the element to be made accessible

Returns:

the ModelPathElement for the element

load

protected final void load()

loadElements

protected abstract void loadElements()

Method to be overridden by subclasses, to populate the list of elements.