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/*
* Copyright (c) 2008, 2011, 2012, 2015 Eike Stepper (Loehne, Germany) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.net4j.util.collection;
import org.eclipse.net4j.util.CheckUtil;
import org.eclipse.net4j.util.om.pref.OMPreference;
/**
* @author Eike Stepper
*/
public class PreferenceHistory extends History<String>
{
private OMPreference<String[]> preference;
public PreferenceHistory(OMPreference<String[]> preference)
{
CheckUtil.checkArg(preference, "preference");
this.preference = preference;
}
public OMPreference<String[]> getPreference()
{
return preference;
}
@Override
protected void load()
{
String[] value = preference.getValue();
if (value != null)
{
for (String data : value)
{
IHistoryElement<String> element = createElement(data);
elements.add(element);
}
}
}
@Override
protected void save()
{
String[] array = getData(new String[size()]);
preference.setValue(array);
}
}
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