/*
* JBoss, Home of Professional Open Source
* Copyright 2010, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.richfaces.model;
import java.util.Iterator;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import org.richfaces.component.AbstractTree;
import org.richfaces.component.DeclarativeTreeDataModelWalker;
import org.richfaces.component.TreeModelAdaptor;
import org.richfaces.component.TreeModelRecursiveAdaptor;
import org.richfaces.convert.DeclarativeModelSequenceKeyConverter;
import org.richfaces.model.iterators.DeclarativeTreeDataModelCompositeTuplesIterator;
import com.google.common.base.Predicate;
import com.google.common.base.Predicates;
import com.google.common.collect.Iterables;
/**
* @author Nick Belaevski
*
*/
public class DeclarativeTreeDataModelImpl extends TreeSequenceKeyModel<Object> implements DeclarativeTreeModel<Object> {
private static final Converter DEFAULT_CONVERTER = new DeclarativeModelSequenceKeyConverter();
private static final Predicate<Object> TREE_MODEL_ADAPTOR_INSTANCE_PREDICATE = Predicates
.instanceOf(TreeModelAdaptor.class);
private AbstractTree tree;
private UIComponent currentComponent;
public DeclarativeTreeDataModelImpl(AbstractTree tree) {
this.tree = tree;
this.currentComponent = tree;
}
public UIComponent getCurrentComponent() {
return currentComponent;
}
public boolean isLeaf() {
UIComponent currentComponent = getCurrentComponent();
TreeModelAdaptor adaptor = (TreeModelAdaptor) currentComponent;
if (adaptor.isLeaf()) {
return true;
}
if (adaptor instanceof TreeModelRecursiveAdaptor) {
return false;
}
if (currentComponent.getChildCount() == 0) {
return true;
}
return !Iterables.any(currentComponent.getChildren(), TREE_MODEL_ADAPTOR_INSTANCE_PREDICATE);
}
public Iterator<TreeDataModelTuple> children() {
return new DeclarativeTreeDataModelCompositeTuplesIterator(currentComponent, getRowKey());
}
@Override
public Object getWrappedData() {
throw new UnsupportedOperationException();
}
@Override
public void setWrappedData(Object data) {
throw new UnsupportedOperationException();
}
@Override
protected void setupKey(SequenceRowKey key) {
setRowKeyAndData(null, null);
this.currentComponent = tree;
if (key != null) {
DeclarativeTreeDataModelWalker walker = new DeclarativeTreeDataModelWalker(FacesContext.getCurrentInstance(), tree);
walker.walk(key);
setRowKeyAndData(key, walker.getData());
this.currentComponent = walker.getCurrentComponent();
}
}
public TreeDataModelTuple createSnapshot() {
return new DeclarativeTreeDataModelTuple(getRowKey(), getData(), getCurrentComponent());
}
public void restoreFromSnapshot(TreeDataModelTuple tuple) {
DeclarativeTreeDataModelTuple declarativeModelTuple = (DeclarativeTreeDataModelTuple) tuple;
setRowKeyAndData((SequenceRowKey) tuple.getRowKey(), tuple.getData());
this.currentComponent = declarativeModelTuple.getComponent();
}
public Converter getRowKeyConverter() {
return DEFAULT_CONVERTER;
}
}