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/***
 * Julia: France Telecom's implementation of the Fractal API
 * Copyright (C) 2001-2011 France Telecom R&D
 *
 * This library 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 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Contact: [email protected]
 *
 * Author: Eric Bruneton
 */

package org.objectweb.fractal.julia.control.content;

import org.objectweb.fractal.api.Component;

/**
 * Provides a basic implementation of the {@link SuperControllerNotifier}
 * interface.
 * 

 * 

 * Requirements
 * 
 * none.
 * 
 */

public abstract class BasicSuperControllerMixin
  implements SuperControllerNotifier
{

  // -------------------------------------------------------------------------
  // Private constructor
  // -------------------------------------------------------------------------

  private BasicSuperControllerMixin () {
  }

  // -------------------------------------------------------------------------
  // Fields and methods added and overriden by the mixin class
  // -------------------------------------------------------------------------

  /**
   * The parents of the component to which this controller object belongs.
   */

  public Component[] fcParents;

  public Component[] getFcSuperComponents () {
    if (fcParents == null) {
      return new Component[0];
    } else {
      return fcParents;
    }
  }

  public void addedToFc (final Component parent) {
    int length = fcParents == null ? 1 : fcParents.length + 1;
    Component[] parents = new Component[length];
    if (fcParents != null) {
      System.arraycopy(fcParents, 0, parents, 1, fcParents.length);
    }
    parents[0] = parent;
    fcParents = parents;
  }

  public void removedFromFc (final Component parent) {
    int length = fcParents.length - 1;
    if (length == 0) {
      fcParents = null;
    } else {
      Component[] parents = new Component[length];
      int i = 0;
      for (int j = 0; j < fcParents.length; ++j) {
        if (!fcParents[j].equals(parent)) {
          parents[i++] = fcParents[j];
        }
      }
      fcParents = parents;
    }
  }
}