TargetArray.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2013 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package org.turro.contacts.organigram;
 
import java.io.Serializable;
import java.util.ArrayList;
import java.util.EnumSet;
 
public class TargetArray extends ArrayList<TargetItem> implements Serializable {
 
  private static final long serialVersionUID = -1;
 
  private LastItem lastItem;
 
  public TargetArray() {
    lastItem = LastItem.LI_NONE;
  }
 
  public LastItem getLastItem() {
    checkLastOperator();
    return lastItem;
  }
 
  public void setLastItem(LastItem lastItem) {
    this.lastItem = lastItem;
  }
  
  @Override
  public boolean add(TargetItem e) {
    if(exists(e)) {
      return false;
    }
    boolean result = super.add(e);
    checkLastOperator();
    return result;
  }
 
  @Override
  public void add(int index, TargetItem e) {
    if(exists(e)) {
      return;
    }
    super.add(index, e);
    checkLastOperator();
  }
 
  @Override
  public boolean remove(Object o) {
    boolean result = super.remove(o);
    checkLastOperator();
    return result;
  }
  
  public EnumSet<RelationType> getRelationTypes() {
    EnumSet<RelationType> es = EnumSet.noneOf(RelationType.class);
    for(TargetItem ti : this) {
      es.add(ti.getRelationType());
    }
    return es;
  }
  
  private boolean exists(TargetItem e) {
    for(TargetItem ti : this) {
      if(e.equals(ti)) {
        return true;
      }
    }
    return false;
  }
 
  private void checkLastOperator() {
    if(size() > 0) {
      TargetItem ti = get(size() - 1);
      ti.setNextOperator(NextOperator.NO_OTHERWISE);
    }
  }
  
}