/*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: LineAdapter.java,v 1.2.18.2.4.4 2007/08/21 19:54:06 christianfoltin Exp $*/

package freemind.modes;

import java.awt.Color;

import freemind.main.FreeMindMain;
import freemind.main.Tools;

public abstract class LineAdapter implements MindMapLine {

	protected FreeMindMain frame;
	protected MindMapNode target;

	public static final int DEFAULT_WIDTH = -1;
	protected int NORMAL_WIDTH = 1;

	// recursive attributes. may be accessed directly by the save() method.
	protected Color color;
	protected String style;
	protected int width;

	//
	// Constructors
	//
	public LineAdapter(MindMapNode target, FreeMindMain frame) {
		this.frame = frame;
		this.target = target;
		width = DEFAULT_WIDTH;
		updateStandards();

	}

	//
	// Attributes
	//

	/**
     */
	protected void updateStandards() {
		if (getStandardColor() == null) {
			String stdColor = getFrame().getProperty(
					getStandardColorPropertyString());
			if (stdColor != null && stdColor.length() == 7) {
				setStandardColor(Tools.xmlToColor(stdColor));
			} else {
				setStandardColor(Color.RED);
			}
		}
		if (getStandardStyle() == null) {
			String stdStyle = getFrame().getProperty(
					getStandardStylePropertyString());
			if (stdStyle != null) {
				setStandardStyle(stdStyle);
			} else {
				// setStandardStyle(Style.RED);
			}
		}
	}

	public FreeMindMain getFrame() {
		return frame;
	}

	public Color getColor() {
		if (color == null) {
			return getStandardColor();
		}
		return color;
	}

	public void setColor(Color color) {
		this.color = color;
	}

	public int getWidth() {
		if (width == DEFAULT_WIDTH)
			return NORMAL_WIDTH;
		return width;
	}

	/**
	 * Get the width in pixels rather than in width constant (like -1)
	 */
	public int getRealWidth() {
		return getWidth();
	}

	public void setWidth(int width) {
		this.width = width;
	}

	public String getStyle() {
		if (style == null) {
			return getStandardStyle();
		}
		return style;
	}

	public void setStyle(String style) {
		this.style = style;
	}

	public String toString() {
		return "";
	}

	public void setTarget(MindMapNode target) {
		this.target = target;
	}

	// /////////
	// Private Methods
	// ///////
	/**
	 * I see no reason to hide the node, the line belongs to, to the public,
	 * but... fc.
	 */
	public MindMapNode getTarget() {
		return target;
	}

	public Object clone() {
		try {
			LineAdapter link = (LineAdapter) super.clone();
			// color, ...
			link.color = (color == null) ? null : new Color(color.getRGB());
			return link;
		} catch (java.lang.CloneNotSupportedException e) {
			return null;
		}
	}

	/**
	 * As this color is static but used in at least three different objects
	 * (edges, clouds and links), the abstract mechanism was chosen. The derived
	 * classes set and get the static instance variable.
	 */
	protected abstract void setStandardColor(Color standardColor);

	/**
	 * See {@link LineAdapter.setStandardColor}
	 */
	protected abstract Color getStandardColor();

	protected abstract void setStandardStyle(String standardStyle);

	protected abstract String getStandardStyle();

	protected abstract String getStandardStylePropertyString();

	protected abstract String getStandardColorPropertyString();

}