/*
* $Id: StringValues.java,v 1.4 2009/03/11 13:45:10 kleopatra Exp $
*
* Copyright 2008 Sun Microsystems, Inc., 4150 Network Circle,
* Santa Clara, California 95054, U.S.A. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.jdesktop.swingx.renderer;
import java.io.File;
import java.text.DateFormat;
import java.text.NumberFormat;
import javax.swing.filechooser.FileSystemView;
/**
* A collection of common {@code StringValue} implementations.
*
* @author Karl George Schaefer
* @author Jeanette Winzenburg
*/
public final class StringValues {
/**
* A {@code StringValue} that always presents an empty string.
*/
@SuppressWarnings("serial")
public final static StringValue EMPTY = new StringValue() {
public String getString(Object value) {
return "";
}
};
/**
* A {@code StringValue} that presents a {@link Object#toString() toString}
* value for the given object. If the value passed is {@code null}, this has
* the same effect as {@link StringValues#EMPTY}.
*/
@SuppressWarnings("serial")
public final static StringValue TO_STRING = new StringValue() {
public String getString(Object value) {
return (value != null) ? value.toString() : StringValues.EMPTY.getString(value);
}
};
/**
* A {@code StringValue} that presents the current L&F display name for a
* given file. If the value passed to {@code FILE_NAME} is not a
* {@link File}, this has the same effect as {@link StringValues#TO_STRING}.
*/
@SuppressWarnings("serial")
public static final StringValue FILE_NAME = new StringValue() {
public String getString(Object value) {
if (value instanceof File) {
FileSystemView fsv = FileSystemView.getFileSystemView();
return fsv.getSystemDisplayName((File) value);
}
return StringValues.TO_STRING.getString(value);
}
};
/**
* A {@code StringValue} that presents the current L&F type name for a
* given file. If the value passed to {@code FILE_TYPE} is not a
* {@link File}, this has the same effect as {@link StringValues#TO_STRING}.
*/
@SuppressWarnings("serial")
public static final StringValue FILE_TYPE = new StringValue() {
public String getString(Object value) {
if (value instanceof File) {
FileSystemView fsv = FileSystemView.getFileSystemView();
return fsv.getSystemTypeDescription((File) value);
}
return StringValues.TO_STRING.getString(value);
}
};
/**
* Default converter for <code>Date</code> types. Uses the default format
* as returned from <code>DateFormat</code>.
*/
@SuppressWarnings("serial")
public final static FormatStringValue DATE_TO_STRING = new FormatStringValue() {
/**
* {@inheritDoc}
*/
@Override
public String getString(Object value) {
if (format == null) {
format = DateFormat.getDateInstance();
}
return super.getString(value);
}
};
/**
* Default converter for <code>Number</code> types. Uses the default format
* as returned from <code>NumberFormat</code>.
*/
@SuppressWarnings("serial")
public final static FormatStringValue NUMBER_TO_STRING = new FormatStringValue() {
/**
* {@inheritDoc}
*/
@Override
public String getString(Object value) {
if (format == null) {
format = NumberFormat.getNumberInstance();
}
return super.getString(value);
}
};
private StringValues() {
// does nothing
}
}