import java.io.*;
import java.util.*;
import java.util.zip.*;
import javax.swing.filechooser.*;
import javax.swing.Icon;

public class ZipFileSystemView extends FileSystemView {
    
    public ZipFileSystemView() throws IOException { }
    
    public File createNewFolder(File file) { return null; }
    
    public File createFileObject(File dir, String filename) {
        if(dir instanceof ZipEntryFileProxy) {
            ZipEntryFileProxy zdir = (ZipEntryFileProxy) dir;
            return new ZipEntryFileProxy(zdir.zip, zdir.zipfile, filename, dir);
        }
        return super.createFileObject(dir,filename);
    }
    
    public File getChild(File dir, String filename) {
        if(dir instanceof ZipEntryFileProxy) {
            ZipEntryFileProxy zdir = (ZipEntryFileProxy) dir;
            return new ZipEntryFileProxy(zdir.zip,zdir.zipfile,dir.getPath()+filename,dir);
        }
        return super.getChild(dir,filename);
    }
    
    public String getSystemDisplayName(File f) {
        if(f instanceof ZipEntryFileProxy) {
            return f.getName();
        }
        return super.getSystemDisplayName(f);
    }
    
    public File getParentDirectory(File dir) {
        if(dir instanceof ZipEntryFileProxy) {
            return dir.getParentFile();
        }
        return super.getParentDirectory(dir);
    }

    public File[] getFiles(File dir, boolean useFileHiding) {
        if(dir.getName().endsWith(".zip")) {
            ZipFileProxy proxy = new ZipFileProxy(dir);
            File[] fs = proxy.getFiles("");
            return fs;
        }
        
        if(dir instanceof ZipEntryFileProxy) {
            return dir.listFiles();
        }
        
        return super.getFiles(dir,useFileHiding);
    }
    
    public Boolean isTraversable(File f) {
        if(f.getName().endsWith(".zip")) {
            return new Boolean(true);
        }
        if(f instanceof ZipEntryFileProxy) {
            boolean b = ((ZipEntryFileProxy)f).isDirectory();
            return new Boolean(b);
        }
        return super.isTraversable(f);
    }



    /* debuggin */    
    
    
    // public File createFileObject(String path) {
        // p("create file object: " + path);
    //     return super.createFileObject(path);
    // }
    
    
    // public static void p(String str) {
    //     System.out.println(str);
    // }
}