/**
* Copyright (C) 2002-2012 The FreeCol Team
*
* This file is part of FreeCol.
*
* FreeCol 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 2 of the License, or
* (at your option) any later version.
*
* FreeCol 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 FreeCol. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sf.freecol.common.option;
import java.util.logging.Logger;
import org.freecolandroid.xml.stream.XMLStreamException;
import org.freecolandroid.xml.stream.XMLStreamReader;
import org.freecolandroid.xml.stream.XMLStreamWriter;
import net.sf.freecol.common.model.Specification;
/**
* Represents an option where the valid choice is an integer.
*/
public class IntegerOption extends AbstractOption<Integer> {
@SuppressWarnings("unused")
private static Logger logger = Logger.getLogger(IntegerOption.class.getName());
private int value;
private int minimumValue = Integer.MIN_VALUE;
private int maximumValue = Integer.MAX_VALUE;
/**
* Creates a new <code>IntegerOption</code>.
*
* @param id The identifier for this option. This is used when the object
* should be found in an {@link OptionGroup}.
*/
public IntegerOption(String id) {
super(id);
}
/**
* Creates a new <code>IntegerOption</code>.
*
* @param specification The specification this option belongs
* to. May be null.
*/
public IntegerOption(Specification specification) {
super(specification);
}
/**
* Creates a new <code>IntegerOption</code>.
*
* @param id The identifier for this option. This is used when the object
* should be found in an {@link OptionGroup}.
* @param specification The specification this option belongs
* to. May be null.
*/
public IntegerOption(String id, Specification specification) {
super(id, specification);
}
public IntegerOption clone() {
IntegerOption result = new IntegerOption(getId());
result.setValues(this);
result.minimumValue = minimumValue;
result.maximumValue = maximumValue;
return result;
}
/**
* Returns the minimum allowed value.
* @return The minimum value allowed by this option.
*/
public int getMinimumValue() {
return minimumValue;
}
/**
* Sets the minimum allowed value.
* @param minimumValue The minimum value to set
*/
public void setMinimumValue(int minimumValue) {
this.minimumValue = minimumValue;
}
/**
* Returns the maximum allowed value.
* @return The maximum value allowed by this option.
*/
public int getMaximumValue() {
return maximumValue;
}
/**
* Sets the maximum allowed value.
* @param maximumValue the maximum value to set
*/
public void setMaximumValue(int maximumValue) {
this.maximumValue = maximumValue;
}
/**
* Gets the current value of this <code>IntegerOption</code>.
* @return The value.
*/
public Integer getValue() {
return value;
}
/**
* Sets the value of this <code>IntegerOption</code>.
* @param value The value to be set.
*/
public void setValue(Integer value) {
final int oldValue = this.value;
this.value = value;
if (value != oldValue && isDefined) {
firePropertyChange(VALUE_TAG, Integer.valueOf(oldValue), Integer.valueOf(value));
}
isDefined = true;
}
/**
* Gets a <code>String</code> representation of the current value.
*
* This method can be overwritten by subclasses to allow a custom save
* value, since this method is used by {@link #toXML(XMLStreamWriter)}.
*
* @return The String value of the Integer.
* @see #setValue(String)
*/
protected String getStringValue() {
return Integer.toString(value);
}
/**
* Converts the given <code>String</code> to an Integer and calls
* {@link #setValue(Integer)}.
*
* <br>
* <br>
*
* This method can be overwritten by subclasses to allow a custom save
* value, since this method is used by {@link #readFromXML(XMLStreamReader)}.
*
* @param value The String value of the Integer.
* @see #getStringValue()
*/
protected void setValue(String value) {
setValue(Integer.parseInt(value));
}
/**
* Sets the value of this Option from the given string
* representation. Both parameters must not be null at the same
* time.
*
* @param valueString the string representation of the value of
* this Option
* @param defaultValueString the string representation of the
* default value of this Option
*/
@Override
protected void setValue(String valueString, String defaultValueString) {
setValue(Integer.parseInt((valueString != null) ? valueString : defaultValueString));
}
/**
* This method writes an XML-representation of this object to
* the given stream.
*
* @param out The target stream.
* @throws XMLStreamException if there are any problems writing
* to the stream.
*/
protected void toXMLImpl(XMLStreamWriter out) throws XMLStreamException {
toXMLImpl(out, getXMLElementTagName());
}
protected void toXMLImpl(XMLStreamWriter out, String tag) throws XMLStreamException {
out.writeStartElement(tag);
out.writeAttribute(ID_ATTRIBUTE_TAG, getId());
out.writeAttribute(VALUE_TAG, Integer.toString(value));
if (minimumValue > Integer.MIN_VALUE) {
out.writeAttribute("minimumValue", Integer.toString(minimumValue));
}
if (maximumValue < Integer.MAX_VALUE) {
out.writeAttribute("maximumValue", Integer.toString(maximumValue));
}
out.writeEndElement();
}
/**
* {@inheritDoc}
*/
protected void readAttributes(XMLStreamReader in) throws XMLStreamException {
super.readAttributes(in);
minimumValue = getAttribute(in, "minimumValue", Integer.MIN_VALUE);
maximumValue = getAttribute(in, "maximumValue", Integer.MAX_VALUE);
}
/**
* Gets the tag name of the root element representing this object.
*
* @return "integerOption".
*/
public static String getXMLElementTagName() {
return "integerOption";
}
public String toString() {
return getXMLElementTagName() + " [value=" + value + "]";
}
}