/*******************************************************************************
 * 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.bfh.logisim.designrulecheck;

import java.util.ArrayList;

import com.cburch.logisim.comp.Component;
import com.cburch.logisim.std.wiring.Clock;

public class ClockSourceContainer {

	ArrayList<Component> sources;
	boolean RequiresFPGAGlobalClock;

	public ClockSourceContainer() {
		sources = new ArrayList<Component>();
		RequiresFPGAGlobalClock = false;
	}

	public void clear() {
		sources.clear();
		RequiresFPGAGlobalClock = false;
	}

	private boolean equals(Component comp1, Component comp2) {
		if (comp1.getAttributeSet().getValue(Clock.ATTR_HIGH).intValue() != comp2
				.getAttributeSet().getValue(Clock.ATTR_HIGH).intValue()) {
			return false;
		}
		if (comp1.getAttributeSet().getValue(Clock.ATTR_LOW).intValue() != comp2
				.getAttributeSet().getValue(Clock.ATTR_LOW).intValue()) {
			return false;
		}
		return true;
	}

	public int getClockId(Component comp) {
		if (!(comp.getFactory() instanceof Clock)) {
			return -1;
		}
		for (Component clock : sources) {
			if (equals(comp, clock)) {
				return sources.indexOf(clock);
			}
		}
		sources.add(comp);
		return sources.indexOf(comp);
	}

	public int getNrofSources() {
		return sources.size();
	}

	public ArrayList<Component> getSources() {
		return sources;
	}

	public boolean RequiresFPGAGlobalClock() {
		return RequiresFPGAGlobalClock;
	}

	public void SetGloblaClockRequirement() {
		RequiresFPGAGlobalClock = true;
	}
}