package org.webslinger.commons.vfs.tests;

 import java.io.InputStream;

 import java.io.OutputStream;

 import org.apache.commons.vfs.FileChangeEvent;

 import org.apache.commons.vfs.FileListener;

 import org.apache.commons.vfs.FileObject;

 import org.apache.commons.vfs.NameScope;

 import org.webslinger.io.Monitor;

 import org.webslinger.io.tests.Root;

 public abstract class AbstractFileObjectRoot<R extends AbstractFileObjectRoot<R, F>, F extends FileObject> implements Root<R> {

     protected final F file;

     protected AbstractFileObjectRoot(F file) {

         this.file = file;

     }

     public R create(String name) throws Exception {

         return create((F) file.resolveFile(name, NameScope.CHILD));

     }

     protected abstract R create(F file) throws Exception;

     public void delete() throws Exception {

         file.delete();

     }

     public InputStream openIn() throws Exception {

         return file.getContent().getInputStream();

     }

     public OutputStream openOut() throws Exception {

         return file.getContent().getOutputStream();

     }

     public void touch(long time) throws Exception {

         file.getContent().setLastModifiedTime(time);

     }

     public void refresh() throws Exception {

         file.refresh();

     }

     protected abstract class AbstractFileObjectRootListener extends Listener implements FileListener {

         public void start() throws Exception {

             file.getFileSystem().addListener(file, this);

         }

         public void stop() throws Exception {

             file.getFileSystem().removeListener(file, this);

         }

         public void fileCreated(FileChangeEvent event) throws Exception {

             addEvent(Monitor.Listener.Event.CREATE);

         }

         public void fileDeleted(FileChangeEvent event) throws Exception {

             addEvent(Monitor.Listener.Event.CHANGE);

         }

         public void fileChanged(FileChangeEvent event) throws Exception {

             addEvent(Monitor.Listener.Event.DELETE);

         }

     }

 }