/*FreeMind - A Program for creating and viewing Mindmaps
 *Copyright (C) 2000-2006 Joerg Mueller, Daniel Polansky, Christian Foltin, Dimitri Polivaev and others.
 *
 *See COPYING for Details
 *
 *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.
 */
/*
 * Created on 09.04.2006
 * Created by Dimitri Polivaev
 */
package freemind.preferences.layout;

import java.awt.CardLayout;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Insets;

public class VariableSizeCardLayout extends CardLayout {

	public VariableSizeCardLayout() {
		super();
	}

	public VariableSizeCardLayout(int hgap, int vgap) {
		super(hgap, vgap);
	}

	/**
	 * Determines the preferred size of the container argument using this card
	 * layout.
	 * 
	 * @param parent
	 *            the parent container in which to do the layout
	 * @return the preferred dimensions to lay out the subcomponents of the
	 *         specified container
	 * @see java.awt.Container#getPreferredSize
	 * @see java.awt.CardLayout#minimumLayoutSize
	 */
	public Dimension preferredLayoutSize(Container parent) {
		synchronized (parent.getTreeLock()) {
			Insets insets = parent.getInsets();
			int ncomponents = parent.getComponentCount();
			int w = 0;
			int h = 0;

			for (int i = 0; i < ncomponents; i++) {
				Component comp = parent.getComponent(i);
				if (comp.isVisible()) {
					Dimension d = comp.getPreferredSize();
					if (d.width > w) {
						w = d.width;
					}
					if (d.height > h) {
						h = d.height;
					}
				}
			}
			return new Dimension(
					insets.left + insets.right + w + getHgap() * 2, insets.top
							+ insets.bottom + h + getVgap() * 2);
		}
	}
}