Switch.java

/*******************************************************************************
 * Copyright (c) 2003-2005, 2013 Till Zoppke.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     Till Zoppke - initial API and implementation
 ******************************************************************************/
/*
 * Created on 21.03.2004
 */
package eniac.data.model.sw;

import java.util.List;

import org.xml.sax.Attributes;

import eniac.data.io.DataParsingException;
import eniac.data.model.EData;
import eniac.io.XMLUtil;
import eniac.property.ChoiceProperty;
import eniac.property.Property;

/**
 * @author zoppke
 */
public class Switch extends EData {

	protected int _value;

	private boolean _enabled = true;

	// ============================== lifecycle
	// =================================

	public Switch() {
		// empty
	}

	public void setAttributes(Attributes attrs) {
		super.setAttributes(attrs);

		// parse value from attributes
		String[] codes = _type.getCodes();
		int value = XMLUtil.parseInt(attrs, _type.getCodeName(), codes);

		// If value is in bounds, set it. Otherwise throw exception.
		if (isInbound(value)) {
			setValue(value);
		}
		else {
			throw new DataParsingException(value, _type.getCodeName(), getClass());
		}
	}

	// ============================== methods
	// ===================================

	public void setValue(int value) {
		if (_value != value) {
			_value = value;
			setChanged();
			notifyObservers(EData.REPAINT);
		}
	}

	public int getValue() {
		return _value;
	}

	public void toggleValue() {
		_value = 1 - _value;
		setChanged();
		notifyObservers(EData.REPAINT);
	}

	public boolean isValue() {
		return _value == 1;
	}

	public String encode() {
		String[] codes = _type.getCodes();
		return codes[_value];
	}

	protected boolean isInbound(int value) {
		String[] codes = _type.getCodes();
		return value >= 0 && value < codes.length;
	}

	public String getAttributes() {
		return super.getAttributes() + XMLUtil.wrapAttribute(_type.getCodeName(), encode().toString());
	}

	public List<Property> getProperties() {
		List<Property> l = super.getProperties();
		String[] codes = _type.getCodes();
		l.add(new ChoiceProperty(_type.getCodeName(), codes, _value));
		return l;
	}

	public void setProperties(List<Property> l) {
		for (Property p : l) {
			if (p.getName().equals(_type.getCodeName().name().toLowerCase())) {
				setValue(((ChoiceProperty) p).getSelection());
				// it.remove(); ===> need to remove ???
			}
		}
		super.setProperties(l);
	}

	public void setEnabled(boolean b) {
		_enabled = b;
	}

	public boolean isEnabled() {
		return _enabled;
	}
}