/*
Copyright 2012 GanttProject Team
This file is part of GanttProject, an opensource project management tool.
GanttProject 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.
GanttProject 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 GanttProject. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sourceforge.ganttproject.io;
import java.util.Arrays;
import java.util.Map;
import javax.xml.transform.sax.TransformerHandler;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;
import com.google.common.base.Function;
import com.google.common.collect.Maps;
import biz.ganttproject.core.option.GPOption;
import biz.ganttproject.core.option.ListOption;
/**
* Saves GPOption instances to XML as <option> tags.
*
* @author dbarashev (Dmitry Barashev)
*/
public class OptionSaver extends SaverBase {
public void saveOptionList(TransformerHandler handler, GPOption<?>... options) throws SAXException {
saveOptionList(handler, Arrays.asList(options));
}
public void saveOptionList(TransformerHandler handler, Iterable<GPOption<?>> options) throws SAXException {
saveOptionMap(Maps.uniqueIndex(options, new Function<GPOption<?>, String>() {
@Override
public String apply(GPOption<?> value) {
return value.getID();
}
}).entrySet(), handler);
}
public void saveOptionMap(Iterable<Map.Entry<String, GPOption<?>>> options, TransformerHandler handler) throws SAXException {
AttributesImpl attrs = new AttributesImpl();
for (Map.Entry<String, GPOption<?>> entry : options) {
GPOption<?> option = entry.getValue();
if (option.getPersistentValue() != null) {
addAttribute("id", entry.getKey(), attrs);
if (option instanceof ListOption) {
cdataElement("option", option.getPersistentValue(), attrs, handler);
} else {
addAttribute("value", option.getPersistentValue(), attrs);
emptyElement("option", attrs, handler);
}
}
}
}
}