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Contains extensions to the Swing GUI toolkit, including new and enhanced components that provide functionality commonly required by rich client applications.
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/*
* $Id: IconValues.java 3152 2008-12-23 18:12:39Z kschaefe $
*
* 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 javax.swing.Icon;
import javax.swing.filechooser.FileSystemView;
/**
* A collection of common {@code IconValue} implementations.
*
* @author Karl George Schaefer
* @author Jeanette Winzenburg
*/
public final class IconValues {
/**
* Always NULL_ICON. This is useful to indicate that we really want
* no icon instead of f.i. a default provided by the CellContext.
*/
@SuppressWarnings("serial")
public static final IconValue NONE = new IconValue() {
public Icon getIcon(Object value) {
return IconValue.NULL_ICON;
}
};
/**
* Returns the value as Icon if possible or null.
*/
@SuppressWarnings("serial")
public static final IconValue ICON = new IconValue() {
public Icon getIcon(Object value) {
if (value instanceof Icon) {
return (Icon) value;
}
return null;
}
};
/**
* An {@code IconValue} that presents the current L&F icon for a given file.
* If the value passed to {@code FILE_ICON} is not a {@link File}, this has
* the same effect as {@link IconValues#NONE}.
*/
@SuppressWarnings("serial")
public static final IconValue FILE_ICON = new IconValue() {
public Icon getIcon(Object value) {
if (value instanceof File) {
FileSystemView fsv = FileSystemView.getFileSystemView();
return fsv.getSystemIcon((File) value);
}
return IconValues.NONE.getIcon(value);
}
};
private IconValues() {
// does nothing
}
}