/*
 * Copyright (C) 2004 NNL Technology AB
 * Visit www.infonode.net for information about InfoNode(R) 
 * products and how to contact NNL Technology AB.
 *
 * 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 2
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, 
 * MA 02111-1307, USA.
 */


// $Id: WindowDecoder.java,v 1.19 2007/01/28 21:25:10 jesper Exp $
package net.infonode.docking;

import net.infonode.docking.internal.ReadContext;
import net.infonode.docking.model.SplitWindowItem;
import net.infonode.docking.model.TabWindowItem;
import net.infonode.docking.model.ViewReader;
import net.infonode.docking.model.WindowItem;

import java.io.IOException;
import java.io.ObjectInputStream;

/**
 * @author $Author: jesper $
 * @version $Revision: 1.19 $
 */
class WindowDecoder {
  private WindowDecoder() {
  }

  static DockingWindow decodeWindow(ObjectInputStream in, ReadContext context) throws IOException {
    int id = in.readInt();

    switch (id) {
      case WindowIds.VIEW:
        return View.read(in, context);

      case WindowIds.SPLIT: {
        SplitWindow w = new SplitWindow(true);
        return w.oldRead(in, context);
      }

      case WindowIds.TAB: {
        TabWindow w = new TabWindow();
        return w.oldRead(in, context);
      }

      default:
        throw new IOException("Invalid window ID: " + id + '!');
    }
  }

  static DockingWindow decodeWindow(ObjectInputStream in, ReadContext context, ViewReader viewReader) throws
                                                                                                      IOException {
    int id = in.readInt();

    if (id == WindowIds.VIEW) {
      return viewReader.readView(in, context);
    }
    else {
      WindowItem windowItem = viewReader.readWindowItem(in, context);

      switch (id) {
        case WindowIds.SPLIT: {
          SplitWindowItem item = (SplitWindowItem) windowItem;

          if (item == null) {
            item = new SplitWindowItem();
            item.readSettings(in, context);
          }

          SplitWindow w = new SplitWindow(item.isHorizontal(),
                                          item.getDividerLocation(),
                                          null,
                                          null,
                                          item);
          return w.newRead(in, context, viewReader);
        }

        case WindowIds.TAB: {
          TabWindowItem item = (TabWindowItem) windowItem;

          if (item == null) {
            item = new TabWindowItem();
            item.readSettings(in, context);
          }

          TabWindow w = new TabWindow(null, item);
          return w.newRead(in, context, viewReader);
        }

        default:
          throw new IOException("Invalid window ID: " + id + '!');
      }
    }
  }
}