/*******************************************************************************
 * 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.logisim.gui.main;

import java.util.HashMap;
import java.util.Map;

import com.cburch.logisim.data.Attribute;
import com.cburch.logisim.data.AttributeSet;
import com.cburch.logisim.proj.Action;
import com.cburch.logisim.proj.Project;
import com.cburch.logisim.tools.Tool;
import com.cburch.logisim.tools.key.KeyConfigurationEvent;
import com.cburch.logisim.tools.key.KeyConfigurationResult;

public class ToolAttributeAction extends Action {
	public static Action create(KeyConfigurationResult results) {
		return new ToolAttributeAction(results);
	}

	public static Action create(Tool tool, Attribute<?> attr, Object value) {
		AttributeSet attrs = tool.getAttributeSet();
		KeyConfigurationEvent e = new KeyConfigurationEvent(0, attrs, null,
				null);
		KeyConfigurationResult r = new KeyConfigurationResult(e, attr, value);
		return new ToolAttributeAction(r);
	}

	private KeyConfigurationResult config;
	private Map<Attribute<?>, Object> oldValues;

	private ToolAttributeAction(KeyConfigurationResult config) {
		this.config = config;
		this.oldValues = new HashMap<Attribute<?>, Object>(2);
	}

	@Override
	public void doIt(Project proj) {
		AttributeSet attrs = config.getEvent().getAttributeSet();
		Map<Attribute<?>, Object> newValues = config.getAttributeValues();
		Map<Attribute<?>, Object> oldValues = new HashMap<Attribute<?>, Object>(
				newValues.size());
		for (Map.Entry<Attribute<?>, Object> entry : newValues.entrySet()) {
			@SuppressWarnings("unchecked")
			Attribute<Object> attr = (Attribute<Object>) entry.getKey();
			oldValues.put(attr, attrs.getValue(attr));
			attrs.setValue(attr, entry.getValue());
		}
		this.oldValues = oldValues;
	}

	@Override
	public String getName() {
		return Strings.get("changeToolAttrAction");
	}

	@Override
	public void undo(Project proj) {
		AttributeSet attrs = config.getEvent().getAttributeSet();
		Map<Attribute<?>, Object> oldValues = this.oldValues;
		for (Map.Entry<Attribute<?>, Object> entry : oldValues.entrySet()) {
			@SuppressWarnings("unchecked")
			Attribute<Object> attr = (Attribute<Object>) entry.getKey();
			attrs.setValue(attr, entry.getValue());
		}
	}

}