| /* |
| * 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); |
| } |
| } |