CollectionView.java

package fr.openwide.core.wicket.more.markup.repeater.collection;

import java.util.Collection;

import org.apache.wicket.markup.repeater.Item;
import org.apache.wicket.model.IModel;

import com.google.common.base.Function;

import fr.openwide.core.wicket.more.markup.repeater.sequence.SequenceView;
import fr.openwide.core.wicket.more.model.ReadOnlyCollectionModel;

public abstract class CollectionView<T> extends SequenceView<T> {

	private static final long serialVersionUID = 1L;
	
	public CollectionView(String id, ICollectionModel<T, ?> collectionModel) {
		super(id, collectionModel);
		setDefaultModel(collectionModel);
	}

	/**
	 * Creates a {@link ReadOnlyCollectionModel read-only} view on the given model, using the given factory for generating
	 * item models.
	 */
	@SuppressWarnings("unchecked")
	public CollectionView(String id, IModel<? extends Collection<T>> collectionModel,
			Function<? super T, ? extends IModel<T>> itemModelFactory) {
		this(id, collectionModel instanceof ICollectionModel ?
				(ICollectionModel<T, ?>) collectionModel : ReadOnlyCollectionModel.of(collectionModel, itemModelFactory));
	}
	
	@Override
	protected abstract void populateItem(Item<T> item);

	@SuppressWarnings("unchecked") // The sequence provider is known to be a ICollectionModel, see constructor
	public ICollectionModel<T, ?> getModel() {
		return (ICollectionModel<T, ?>) getSequenceProvider();
	}

}