// XAAL toolkit
// Copyright (C) 2009 Ville Karavirta <vkaravir(a)cs.hut.fi>
//
// 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 3 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 xaal.objects.animation;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import xaal.objects.AddStructure;
import xaal.objects.Xaal;
import xaal.objects.structures.DataStructure;
import xaal.objects.structures.Structure;
import xaal.util.EmptyIterator;

public class SearchOperation extends CDTOperation implements AddStructure{
    private String key;
    private Structure target;
    private List elements;
    
    public SearchOperation(Xaal xaalDoc) {
        super(xaalDoc);
        elements = new ArrayList();
    }

    /**
     * @param structure
     */
    public void setTarget(Structure structure) {
        this.target = structure;
    }
    
    public Structure getTarget() {
        return target;
    }
        /**
     * @return Returns the key.
     */
    public String getKey() {
        return key;
    }

    /**
     * @param key The key to set.
     */
    public void setKey(String key) {
        this.key = key;
    }
    
    public Iterator getStructures() {
        if (elements == null) {
            return new EmptyIterator();
        }
        return elements.iterator();
    }
    
    /**
     * @param structure
     */
    public void addStructure(Structure structure) {
        elements.add(structure);
    }
    
    public void addStructure(DataStructure ds) {
        addStructure((Structure)ds);
    }
    
}