source: trunk/src/org/expeditee/agents/HFormat.java@ 919

/**
 *    HFormat.java
 *    Copyright (C) 2010 New Zealand Digital Library, http://expeditee.org
 *
 *    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 org.expeditee.agents;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.expeditee.gui.Frame;
import org.expeditee.items.Item;
import org.expeditee.items.Text;

/**
 * A simple formatting agent that aligns the Y values.
 * 
 * @author Mike
 * 
 */
public class HFormat extends Format {

        public HFormat() {
                super();
        }

        @Override
        public Frame process(Frame start) {
                Collection<Text> itemsToFormat = getItemsToFormat(start);
                
                if(itemsToFormat.size() == 0)
                        return null;
                
                List<Item> changedItems = new ArrayList<Item>();
                
                float anchorY = 0F;
                float yThreshold = 0F;
                
                for(Text t: itemsToFormat){
                        if(t.getY() > yThreshold + anchorY){
                                anchorY = t.getY();
                                yThreshold = t.getSize();
                        }else{
                                if(t.getY() != anchorY && !changedItems.contains(t)) {
                                        Item copy = t.copy();
                                        copy.setID(t.getID());
                                        changedItems.add(copy);
                                }
                                t.setY(anchorY);
                        }
                }
                
                System.out.println(changedItems);
                start.addToUndoMove(changedItems);
                return null;
        }
}