// 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;

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

import xaal.objects.graphical.GraphicalPrimitive;
import xaal.objects.structures.DataStructure;
import xaal.util.DepthComparator;

/**
 * 
 */
public class Initial implements AddDataStructure, AddGraphicalPrimitive {

    private List graphics;
    private Stack structures = new Stack();
    private Xaal root;

    public Initial() {
    }
    
    /**
     * 
     */
    public Initial(Xaal x) {
        super();
        setRoot(x);
    }

    public void addStructure(DataStructure ds) {
        if (structures == null)
            structures = new Stack();
        structures.push(ds);
    }
    
    public String toString() {
        StringBuffer toStr = new StringBuffer();
        for (Iterator iter = structures.iterator(); iter.hasNext();) {
            DataStructure element = (DataStructure) iter.next();
            toStr.append("Structure: ").append(element.toString()).append("\n\n");
            
        }
        return toStr.toString();
    }
    
    public Iterator getStructures() {
        if (structures == null)
            structures = new Stack();
        return structures.iterator();
    }

    public void addGraphical(GraphicalPrimitive gp) {
        if (graphics == null)
            graphics = new ArrayList();
        graphics.add(gp);
    }
    
    public Iterator getGraphicals() {
        if (graphics == null)
            graphics = new ArrayList();
        //Collections.sort(graphics, new DepthComparator());
        return graphics.iterator();
    }

    public Xaal getRoot() {
        return root;
    }

    public void setRoot(Xaal root) {
        this.root = root;
    }

    public void setGraphical(List graphicalPrimitives) {
        graphics = graphicalPrimitives;        
    }
    
    /**
     * Returns a copy of the list of graphical primitives in this container.
     * @return
     */
    public List getGraphicalsList() {
        return new ArrayList(graphics);
    }
}