/*******************************************************************************
 * This file is part of logisim-evolution.
 *
 *   logisim-evolution 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 3 of the License, or
 *   (at your option) any later version.
 *
 *   logisim-evolution 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 logisim-evolution.  If not, see <http://www.gnu.org/licenses/>.
 *
 *   Original code by Carl Burch (http://www.cburch.com), 2011.
 *   Subsequent modifications by :
 *     + Haute École Spécialisée Bernoise
 *       http://www.bfh.ch
 *     + Haute École du paysage, d'ingénierie et d'architecture de Genève
 *       http://hepia.hesge.ch/
 *     + Haute École d'Ingénierie et de Gestion du Canton de Vaud
 *       http://www.heig-vd.ch/
 *   The project is currently maintained by :
 *     + REDS Institute - HEIG-VD
 *       Yverdon-les-Bains, Switzerland
 *       http://reds.heig-vd.ch
 *******************************************************************************/

package com.cburch.draw.shapes;

import java.awt.Color;

import com.cburch.draw.model.AbstractCanvasObject;
import com.cburch.draw.model.CanvasObject;
import com.cburch.logisim.data.Attribute;
import com.cburch.logisim.data.AttributeOption;

abstract class FillableCanvasObject extends AbstractCanvasObject {
	private AttributeOption paintType;
	private int strokeWidth;
	private Color strokeColor;
	private Color fillColor;

	public FillableCanvasObject() {
		paintType = DrawAttr.PAINT_STROKE;
		strokeWidth = 1;
		strokeColor = Color.BLACK;
		fillColor = Color.WHITE;
	}

	public AttributeOption getPaintType() {
		return paintType;
	}

	public int getStrokeWidth() {
		return strokeWidth;
	}

	@Override
	@SuppressWarnings("unchecked")
	public <V> V getValue(Attribute<V> attr) {
		if (attr == DrawAttr.PAINT_TYPE) {
			return (V) paintType;
		} else if (attr == DrawAttr.STROKE_COLOR) {
			return (V) strokeColor;
		} else if (attr == DrawAttr.FILL_COLOR) {
			return (V) fillColor;
		} else if (attr == DrawAttr.STROKE_WIDTH) {
			return (V) Integer.valueOf(strokeWidth);
		} else {
			return null;
		}
	}

	@Override
	public boolean matches(CanvasObject other) {
		if (other instanceof FillableCanvasObject) {
			FillableCanvasObject that = (FillableCanvasObject) other;
			boolean ret = this.paintType == that.paintType;
			if (ret && this.paintType != DrawAttr.PAINT_FILL) {
				ret = ret && this.strokeWidth == that.strokeWidth
						&& this.strokeColor.equals(that.strokeColor);
			}
			if (ret && this.paintType != DrawAttr.PAINT_STROKE) {
				ret = ret && this.fillColor.equals(that.fillColor);
			}
			return ret;
		} else {
			return false;
		}
	}

	@Override
	public int matchesHashCode() {
		int ret = paintType.hashCode();
		if (paintType != DrawAttr.PAINT_FILL) {
			ret = ret * 31 + strokeWidth;
			ret = ret * 31 + strokeColor.hashCode();
		} else {
			ret = ret * 31 * 31;
		}
		if (paintType != DrawAttr.PAINT_STROKE) {
			ret = ret * 31 + fillColor.hashCode();
		} else {
			ret = ret * 31;
		}
		return ret;
	}

	@Override
	public void updateValue(Attribute<?> attr, Object value) {
		if (attr == DrawAttr.PAINT_TYPE) {
			paintType = (AttributeOption) value;
			fireAttributeListChanged();
		} else if (attr == DrawAttr.STROKE_COLOR) {
			strokeColor = (Color) value;
		} else if (attr == DrawAttr.FILL_COLOR) {
			fillColor = (Color) value;
		} else if (attr == DrawAttr.STROKE_WIDTH) {
			strokeWidth = ((Integer) value).intValue();
		}
	}
}