/*
 *                 Sun Public License Notice
 * 
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 * 
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2002 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.examples.modules.sortbysize;

import java.io.File;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;

import org.openide.actions.PropertiesAction;
import org.openide.filesystems.*;
import org.openide.nodes.*;
import org.openide.util.WeakListener;
import org.openide.util.actions.SystemAction;

public class FileViewNode extends AbstractNode implements FileChangeListener {
    
    private final FileObject f;
    
    public FileViewNode(FileObject f) {
        super(f.isFolder() ? new FileViewChildren(f) : Children.LEAF);
        this.f = f;
        setIconBase(f.isFolder() ? "org/netbeans/examples/modules/sortbysize/folder" : "org/netbeans/examples/modules/sortbysize/file");
        setDefaultAction(SystemAction.get(PropertiesAction.class));
        updateNames();
        f.addFileChangeListener(WeakListener.fileChange(this, f));
    }
    
    private void updateNames() {
        setName(f.getNameExt());
        File physical = FileUtil.toFile(f);
        if (physical != null) {
            setShortDescription(physical.getAbsolutePath());
        }
    }
    
    protected Sheet createSheet() {
        Sheet sheet = super.createSheet();
        if (f.isData()) {
            Sheet.Set props = sheet.get(Sheet.PROPERTIES);
            if (props == null) {
                props = Sheet.createPropertiesSet();
                sheet.put(props);
            }
            props.put(new SizeProp());
        }
        return sheet;
    }
    
    public Node cloneNode() {
        return new FileViewNode(f);
    }
    public Node.Handle getHandle() {
        return new H(f);
    }
    
    public void fileChanged(FileEvent fe) {
        if (fe.getFile() == f) {
            firePropertyChange("size", null, null);
        }
    }
    public void fileRenamed(FileRenameEvent fe) {
        if (fe.getFile() == f) {
            updateNames();
        }
    }
    public void fileDeleted(FileEvent fe) {
        if (fe.getFile() == f) {
            fireNodeDestroyed();
        }
    }
    public void fileAttributeChanged(FileAttributeEvent fe) {}
    public void fileDataCreated(FileEvent fe) {}
    public void fileFolderCreated(FileEvent fe) {}
    
    private static final class H implements Node.Handle {
        private static final long serialVersionUID = 5762765672245L;
        private final FileObject f;
        public H(FileObject f) {
            this.f = f;
        }
        public Node getNode() throws IOException {
            return new FileViewNode(f);
        }
    }
    
    private final class SizeProp extends PropertySupport.ReadOnly {
        public SizeProp() {
            super("size", Long.TYPE, "Size", "Size of this file in bytes.");
        }
        public Object getValue() throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {
            return new Long(f.getSize());
        }
    }
    
}