/*
* Freeplane - mind map editor
* Copyright (C) 2008 Dimitry Polivaev
*
* This file author is Dimitry Polivaev
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.freeplane.features.mode;
import java.util.Iterator;
import java.util.Map;
import java.util.TreeMap;
public class ExclusivePropertyChain<V, T> {
final private Map<Integer, IPropertyHandler<V, T>> map = new TreeMap<Integer, IPropertyHandler<V, T>>();
public IPropertyHandler<V, T> addGetter(final Integer key, final IPropertyHandler<V, T> getter) {
return map.put(key, getter);
}
public V getProperty(final T node) {
final Iterator<IPropertyHandler<V, T>> iterator = map.values().iterator();
while (iterator.hasNext()) {
IPropertyHandler<V, T> handler = iterator.next();
final V property = handler.getProperty(node, null);
if (property != null) {
return property;
}
}
return null;
}
public IPropertyHandler<V, T> removeGetter(final Integer key) {
return map.remove(key);
}
}