/**
 * Copyright 2010, 2011 Jingjing Li.
 *
 * This file is part of jplot2d.
 *
 * jplot2d 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 3 of the
 * License, or any later version.
 *
 * jplot2d 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 Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with jplot2d. If not, see .
 */
package org.jplot2d.element.impl;

import java.awt.geom.Dimension2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.lang.reflect.Method;

/**
 * @author Jingjing Li
 * 
 */
public abstract class LegendItemImpl extends ElementImpl implements LegendItemEx {

	private boolean visible = true;

	private double locX, locY;

	private LegendEx legend;

	public LegendItemImpl() {

	}

	public String getId() {
		return "LegendItem";
	}

	public InvokeStep getInvokeStepFormParent() {
		if (parent == null) {
			return null;
		}

		Method method;
		try {
			method = XYGraphEx.class.getMethod("getLegendItem");
		} catch (NoSuchMethodException e) {
			throw new Error(e);
		}
		return new InvokeStep(method);
	}

	public XYGraphEx getParent() {
		return (XYGraphEx) super.getParent();
	}

	public LegendEx getLegend() {
		return legend;
	}

	public void setLegend(LegendEx legend) {
		this.legend = legend;
	}

	public Point2D getLocation() {
		return new Point2D.Double(locX, locY);
	}

	public void setLocation(double locX, double locY) {
		this.locX = locX;
		this.locY = locY;
	}

	public Rectangle2D getBounds() {
		Dimension2D size = getSize();
		return new Rectangle2D.Double(locX, locY, size.getWidth(), size.getHeight());
	}

	public boolean isVisible() {
		return visible;
	}

	public void setVisible(boolean visible) {
		this.visible = visible;
		if (getLegend() != null) {
			getLegend().itemVisibilityChanged(this);
		}
	}

	@Override
	public void copyFrom(ElementEx src) {
		super.copyFrom(src);

		LegendItemImpl item = (LegendItemImpl) src;
		visible = item.visible;
		locX = item.locX;
		locY = item.locY;
	}

}