/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* 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 Lesser General Public License for more details.
*
* Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.designer.core.settings;
import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.prefs.BackingStoreException;
import java.util.prefs.Preferences;
import javax.swing.event.EventListenerList;
import org.pentaho.reporting.designer.core.model.ModelUtility;
import org.pentaho.reporting.designer.core.util.exceptions.UncaughtExceptionsModel;
/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public class NumberFormatModel
{
private EventListenerList eventListeners;
private Preferences properties;
private static final String[] EMPTY_FORMATS = new String[0];
public NumberFormatModel()
{
eventListeners = new EventListenerList();
properties = Preferences.userRoot().node("org/pentaho/reporting/designer/numberformats"); // NON-NLS
}
public void addSettingsListener(final SettingsListener listener)
{
eventListeners.add(SettingsListener.class, listener);
}
public void removeSettingsListener(final SettingsListener listener)
{
eventListeners.remove(SettingsListener.class, listener);
}
public String[] getNumberFormats()
{
try
{
final ArrayList<String> retval = getFormatsAsList();
if (retval.isEmpty() == false)
{
return retval.toArray(new String[retval.size()]);
}
return ModelUtility.getNumberFormats();
}
catch (final BackingStoreException e)
{
// ignore ..
UncaughtExceptionsModel.getInstance().addException(e);
return EMPTY_FORMATS;
}
}
private ArrayList<String> getFormatsAsList()
throws BackingStoreException
{
final ArrayList<String> retval = new ArrayList<String>();
final String[] strings = properties.keys();
Arrays.sort(strings);
final int maxFiles = Math.min(10, strings.length);
for (int i = 0; i < maxFiles; i++)
{
final String key = strings[i];
final String file = properties.get(key, null);
retval.add(file);
}
if (retval.size() != strings.length)
{
// store ..
store(retval);
}
return retval;
}
private void store(final List<String> files) throws BackingStoreException
{
properties.clear();
for (int i = 0; i < files.size(); i++)
{
final String file = files.get(i);
properties.put(String.valueOf(i), file);
}
properties.flush();
}
public void setNumberFormats(final String[] file)
{
try
{
store(Arrays.asList(file));
}
catch (BackingStoreException e)
{
// ignore ..
UncaughtExceptionsModel.getInstance().addException(e);
}
fireSettingsChanged();
}
private void fireSettingsChanged()
{
final SettingsListener[] listeners = eventListeners.getListeners(SettingsListener.class);
for (int i = 0; i < listeners.length; i++)
{
final SettingsListener listener = listeners[i];
listener.settingsChanged();
}
}
public void clear()
{
try
{
properties.clear();
fireSettingsChanged();
}
catch (BackingStoreException e)
{
// ignore ..
UncaughtExceptionsModel.getInstance().addException(e);
}
}
}