/*
GanttProject is an opensource project management tool. License: GPL3
Copyright (C) 2011 Dmitry Barashev, GanttProject Team
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package biz.ganttproject.core.option;
import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import com.google.common.collect.Lists;
public class DefaultEnumerationOption<T> extends GPAbstractOption<String> implements EnumerationOption {
private final List<String> myValues;
private final Map<String, T> myStringValue_ObjectValue = new LinkedHashMap<String, T>();
public DefaultEnumerationOption(String id, List<String> values) {
super(id);
myValues = values;
}
public DefaultEnumerationOption(String id, T[] values) {
super(id);
myValues = Lists.newArrayList();
reloadValues(Arrays.asList(values));
}
protected void reloadValues(List<T> values) {
List<String> oldValues = Lists.newArrayList(myValues);
myValues.clear();
myStringValue_ObjectValue.clear();
for (T value : values) {
myStringValue_ObjectValue.put(objectToString(value), value);
}
myValues.addAll(myStringValue_ObjectValue.keySet());
getPropertyChangeSupport().firePropertyChange(EnumerationOption.VALUE_SET, oldValues, myValues);
}
protected String objectToString(T obj) {
assert obj != null;
return obj.toString();
}
protected T stringToObject(String value) {
if (myStringValue_ObjectValue.isEmpty()) {
return null;
}
return myStringValue_ObjectValue.get(value);
}
@Override
public String[] getAvailableValues() {
return myValues.toArray(new String[myValues.size()]);
}
@Override
public String getPersistentValue() {
return getValue();
}
@Override
public void loadPersistentValue(String value) {
setValue(value);
}
public T getSelectedValue() {
return stringToObject(getValue());
}
public void setSelectedValue(T value) {
if (value == null) {
setValue(null);
return;
}
String stringValue = objectToString(value);
if (myStringValue_ObjectValue.containsKey(stringValue)) {
setValue(stringValue);
}
}
}