DiskObject.java

/*
 * Copyright (C) 2004 Sun Microsystems, Inc. All rights reserved. Use is
 * subject to license terms.
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the Lesser 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.
 */ 

import java.io.File;

import java.util.HashMap;
import java.util.Map;

import javax.swing.JLabel;
import javax.swing.ImageIcon;

import org.jdesktop.jdic.filetypes.Association;
import org.jdesktop.jdic.filetypes.AssociationService;

import org.jdesktop.jdic.icons.IconService;

/**
 * JDIC API demo class.
 * <p>
 * The class represents an disk object.
 */
public class DiskObject {

    private static AssociationService associationService= new AssociationService();

    public final static int TYPE_DRIVER = 1; // "Driver"
    public final static int TYPE_FOLDER = 2; //"Folder";
    public final static int TYPE_FILE = 3; // "File";

    String name;
    private ImageIcon image;
    private String size;
    private String type;
    private String time;

    public DiskObject(File file, int fileType) {
        switch(fileType)
        {
        case TYPE_DRIVER:
            name= file.getAbsolutePath();
            image= FileExplorer.driverIcon;
            type= "Driver";
            break;
        case TYPE_FOLDER:
            name= file.getName();
            image= FileExplorer.folderIcon;
            type= "Folder";
            break;
        case TYPE_FILE:
            name= file.getName();
            size= MyUtility.length2KB(file.length());

            final Association assoc= getAssociation(file);
            if(assoc!=null) {
                type= assoc.getMimeType();
                image= getIcon(assoc.getIconFileName());
            }
            if(type==null)
                type= "File";

            if(image==null)
                image= FileExplorer.fileIcon;
            break;
        }
        time= (new java.util.Date(file.lastModified())).toString();
    }

    private static Map iconCache= new HashMap();

    private static ImageIcon getIcon(final String iconSpec) {
        ImageIcon rc= (ImageIcon)iconCache.get(iconSpec);
        if(rc==null) {
            if(iconSpec!=null) {
                final java.awt.Image i= IconService.getIcon(iconSpec, 16);
                rc= i!=null ?new ImageIcon(i) :FileExplorer.fileIcon;
            }
            iconCache.put(iconSpec, rc);
        }
        return rc;
    }

    private Association getAssociation(File file) {
        int dot= name.lastIndexOf('.');
        if(dot>=0) {
            final String ext= name.substring(dot+1);
            Association fileAssoc= associationService.getFileExtensionAssociation(ext);
            if(fileAssoc!=null)
                return fileAssoc;
        }
        try {
            return associationService.getAssociationByContent(file.toURL());
        }
        catch(java.net.MalformedURLException ex) {
            return null;
        }
    }

    public String toString() {
        return name;
    }

    void renderIcon(JLabel label) {
        label.setText(name);
        label.setHorizontalAlignment(JLabel.LEFT);
        label.setIcon(image);
    }

    void renderSize(JLabel label) {
        label.setText(size);
        label.setHorizontalAlignment(JLabel.RIGHT);
        label.setIcon(null);
    }

    void renderType(JLabel label) {
        label.setText(type);
        label.setHorizontalAlignment(JLabel.LEFT);
        label.setIcon(null);
    }

    void renderModified(JLabel label) {
        label.setText(time);
        label.setHorizontalAlignment(JLabel.LEFT);
        label.setIcon(null);
    }

}