net.anwiba.commons.model.AggregatedBooleanModel Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of anwiba-commons-model Show documentation

There is a newer version: 1.2.50

/*
 * #%L
 * *
 * %%
 * Copyright (C) 2007 - 2017 Andreas W. Bartels ([email protected])
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 2.1 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 Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 * #L%
 */
package net.anwiba.commons.model;

import java.util.Collection;

public class AggregatedBooleanModel extends AbstractObjectChangedNotifier implements IBooleanModel {

  private final IBooleanModel model;

  public AggregatedBooleanModel(final Collection models) {
    @SuppressWarnings("hiding")
    final IBooleanModel model = new BooleanModel(!models.stream().filter(m -> !m.get()).findFirst().isPresent());
    model.addChangeListener(() -> fireObjectChanged());
    final IChangeableObjectListener listener = new IChangeableObjectListener() {

      @Override
      public void objectChanged() {
        model.set(!models.stream().filter(m -> !m.get()).findFirst().isPresent());
      }
    };
    models.stream().forEach(m -> m.addChangeListener(listener));
    this.model = model;
  }

  @Override
  public boolean get() {
    return this.model.get();
  }

  @Override
  public void set(final boolean value) {
    // nothing to do
  }

}