phex.gui.tabs.library.FileSystemTableCellRenderer.java Source code

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Here is the source code for phex.gui.tabs.library.FileSystemTableCellRenderer.java

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/*
 *  PHEX - The pure-java Gnutella-servent.
 *  Copyright (C) 2001 - 2007 Phex Development Group
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 *  --- SVN Information ---
 *  $Id: FileSystemTableCellRenderer.java 3891 2007-08-30 16:43:43Z gregork $
 */
package phex.gui.tabs.library;

import java.io.File;
import java.util.Map;

import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.filechooser.FileSystemView;

import org.apache.commons.collections.map.LRUMap;

import phex.common.log.NLogger;
import phex.gui.common.GUIRegistry;
import phex.gui.common.ImageFilterUtils;
import phex.gui.renderer.FWTableCellRenderer;
import phex.share.ShareFile;

/**
 *
 */
public class FileSystemTableCellRenderer extends FWTableCellRenderer {
    private Icon defaultIcon;
    private Icon defaultGrayIcon;

    private FileSystemView fsv;
    private Map<ShareFile, Icon> shareFileIconMap;
    private Map grayMap;

    public FileSystemTableCellRenderer() {
        fsv = FileSystemView.getFileSystemView();
        shareFileIconMap = new LRUMap(100);
        grayMap = new LRUMap(100);

        defaultIcon = GUIRegistry.getInstance().getPlafIconPack().getIcon("Library.File");
        defaultGrayIcon = ImageFilterUtils.createGrayIcon(defaultIcon);
    }

    /**
     * Sets the string for the cell being rendered to <code>value</code>.
     *
     * @param value  the string value for this cell; if value is
     *      <code>null</code> it sets the text value to an empty string
     * @see JLabel#setText
     *
     */
    @Override
    protected void setValue(Object value) {
        try {
            if (value instanceof ShareFile) {
                ShareFile shareFile = (ShareFile) value;
                File file = shareFile.getSystemFile();
                if (file.exists()) {
                    Icon icon = shareFileIconMap.get(shareFile);
                    if (icon == null) {
                        icon = fsv.getSystemIcon(file);
                        shareFileIconMap.put(shareFile, icon);
                    }
                    setIcon(icon);
                } else {
                    setIcon(defaultIcon);
                }
                setText(shareFile.getFileName());
                return;
            } else if (value instanceof File) {
                File file = (File) value;
                setText(file.getName());
                if (file.exists()) {
                    Icon icon = fsv.getSystemIcon(file);
                    Icon grayIcon = lookupGrayIcon(icon);
                    if (grayIcon == null) {
                        grayIcon = ImageFilterUtils.createGrayIcon(icon);
                        bufferGrayIcon(icon, grayIcon);
                    }
                    setIcon(grayIcon);
                } else {
                    setIcon(defaultGrayIcon);
                }
                return;
            }
            setText(value.toString());
            setIcon(null);
        } catch (Throwable th) {
            NLogger.error(FileSystemTableCellRenderer.class, th, th);
        }
    }

    private Icon lookupGrayIcon(Icon icon) {
        if (icon instanceof ImageIcon) {
            return (Icon) grayMap.get(((ImageIcon) icon).getImage());
        } else {
            return (Icon) grayMap.get(icon);
        }
    }

    private void bufferGrayIcon(Icon icon, Icon grayIcon) {
        if (icon instanceof ImageIcon) {
            grayMap.put(((ImageIcon) icon).getImage(), grayIcon);
        } else {
            grayMap.put(icon, grayIcon);
        }
    }
}