/*FreeMind - A Program for creating and viewing Mindmaps
 *Copyright (C) 2000-2001  Joerg Mueller <joergmueller@bigfoot.com>
 *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.
 */
/*$Id: CloudAdapter.java,v 1.1.16.3.4.3 2007/08/21 19:54:05 christianfoltin Exp $*/

package freemind.modes;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Stroke;

import freemind.controller.Controller;
import freemind.main.FreeMind;
import freemind.main.FreeMindMain;
import freemind.main.Tools;
import freemind.main.XMLElement;
import freemind.preferences.FreemindPropertyListener;

public abstract class CloudAdapter extends LineAdapter implements MindMapCloud {

	public static final String RESOURCES_STANDARDCLOUDSTYLE = "standardcloudstyle";
	private static Color standardColor = null;
	private static String standardStyle = null;
	private static CloudAdapterListener listener = null;
	static final Stroke DEF_STROKE = new BasicStroke(3);

	//
	// Constructors
	//
	public CloudAdapter(MindMapNode target, FreeMindMain frame) {
		super(target, frame);
		NORMAL_WIDTH = 3;
		iterativeLevel = -1;
		if (listener == null) {
			listener = new CloudAdapterListener();
			Controller.addPropertyChangeListener(listener);
		}

	}

	/**
	 * calculates the cloud iterative level which is importent for the cloud
	 * size
	 */

	private void calcIterativeLevel(MindMapNode target) {
		iterativeLevel = 0;
		if (target != null) {
			for (MindMapNode parentNode = target.getParentNode(); parentNode != null; parentNode = parentNode
					.getParentNode()) {
				MindMapCloud cloud = parentNode.getCloud();
				if (cloud != null) {
					iterativeLevel = cloud.getIterativeLevel() + 1;
					break;
				}
			}
		}
	}

	public void setTarget(MindMapNode target) {
		super.setTarget(target);
	}

	public Color getExteriorColor() {
		return getColor().darker();
	}

	/** gets iterative level which is required for painting and layout. */
	public int getIterativeLevel() {
		if (iterativeLevel == -1) {
			calcIterativeLevel(target);
		}
		return iterativeLevel;
	}

	/** changes the iterative level. */
	public void changeIterativeLevel(int deltaLevel) {
		if (iterativeLevel != -1) {
			iterativeLevel = iterativeLevel + deltaLevel;
		}
	}

	private int iterativeLevel;

	public XMLElement save() {
		XMLElement cloud = new XMLElement();
		cloud.setName("cloud");

		if (style != null) {
			cloud.setAttribute("STYLE", style);
		}
		if (color != null) {
			cloud.setAttribute("COLOR", Tools.colorToXml(color));
		}
		if (width != DEFAULT_WIDTH) {
			cloud.setAttribute("WIDTH", Integer.toString(width));
		}
		return cloud;
	}

	protected Color getStandardColor() {
		return standardColor;
	}

	protected void setStandardColor(Color standardColor) {
		CloudAdapter.standardColor = standardColor;
	}

	protected String getStandardStyle() {
		return standardStyle;
	}

	protected void setStandardStyle(String standardStyle) {
		CloudAdapter.standardStyle = standardStyle;
	}

	protected String getStandardColorPropertyString() {
		return FreeMind.RESOURCES_CLOUD_COLOR;
	}

	protected String getStandardStylePropertyString() {
		return RESOURCES_STANDARDCLOUDSTYLE;
	}

	protected static class CloudAdapterListener implements
			FreemindPropertyListener {
		public void propertyChanged(String propertyName, String newValue,
				String oldValue) {
			if (propertyName.equals(FreeMind.RESOURCES_CLOUD_COLOR)) {
				CloudAdapter.standardColor = Tools.xmlToColor(newValue);
			}
			if (propertyName.equals(RESOURCES_STANDARDCLOUDSTYLE)) {
				CloudAdapter.standardStyle = newValue;
			}
		}
	}

}