public void fireFileObjectDoubleClicked(FileObject selectedItem) {
    if (fileDialogMode != VFS_DIALOG_SAVEAS) {
      // let's try drilling into the file as a new vfs root first

      String scheme = null;
      if (selectedItem.getName().getExtension().contains("jar")) {
        scheme = "jar:";
      } else if (selectedItem.getName().getExtension().contains("zip")) {
        scheme = "zip:";
      } else if (selectedItem.getName().getExtension().contains("gz")) {
        scheme = "gz:";
      } else if (selectedItem.getName().getExtension().contains("war")) {
        scheme = "war:";
      } else if (selectedItem.getName().getExtension().contains("ear")) {
        scheme = "ear:";
      } else if (selectedItem.getName().getExtension().contains("sar")) {
        scheme = "sar:";
      } else if (selectedItem.getName().getExtension().contains("tar")) {
        scheme = "tar:";
      } else if (selectedItem.getName().getExtension().contains("tbz2")) {
        scheme = "tbz2:";
      } else if (selectedItem.getName().getExtension().contains("tgz")) {
        scheme = "tgz:";
      } else if (selectedItem.getName().getExtension().contains("bz2")) {
        scheme = "bz2:";
      }

      if (scheme != null) {
        try {
          FileObject jarFileObject =
              selectedItem
                  .getFileSystem()
                  .getFileSystemManager()
                  .resolveFile(scheme + selectedItem.getName().getURI());
          vfsBrowser.resetVfsRoot(jarFileObject);
          updateParentFileCombo(jarFileObject);
          vfsBrowser.fileSystemTree.forceFocus();
        } catch (FileSystemException e) {
          e.printStackTrace();
          okPressed = true;
          hideCustomPanelChildren();
          dialog.dispose();
        }
      } else {
        okPressed = true;
        hideCustomPanelChildren();
        dialog.dispose();
      }

    } else {
      // anything?
    }
  }
  public FileObject open(
      Shell applicationShell,
      String[] schemeRestrictions,
      String initialScheme,
      boolean showFileScheme,
      String fileName,
      String[] fileFilters,
      String[] fileFilterNames,
      boolean returnUserAuthenticatedFile,
      int fileDialogMode,
      boolean showLocation,
      boolean showCustomUI) {

    this.fileDialogMode = fileDialogMode;
    this.fileFilters = fileFilters;
    this.fileFilterNames = fileFilterNames;
    this.applicationShell = applicationShell;
    this.showFileScheme = showFileScheme;
    this.initialScheme = initialScheme;
    this.schemeRestrictions = schemeRestrictions;
    this.showLocation = showLocation;
    this.showCustomUI = showCustomUI;

    FileObject tmpInitialFile = initialFile;

    if (defaultInitialFile != null && rootFile == null) {
      try {
        rootFile = defaultInitialFile.getFileSystem().getRoot();
        initialFile = defaultInitialFile;
      } catch (FileSystemException ignored) {
        // well we tried
      }
    }

    createDialog(applicationShell);

    if (!showLocation) {
      comboPanel.setParent(fakeShell);
    } else {
      comboPanel.setParent(customUIPanel);
    }

    if (!showCustomUI) {
      customUIPanel.setParent(fakeShell);
    } else {
      customUIPanel.setParent(dialog);
    }

    // create our file chooser tool bar, contains parent folder combo and various controls
    createToolbarPanel(dialog);
    // create our vfs browser component
    createVfsBrowser(dialog);
    populateCustomUIPanel(dialog);
    if (fileDialogMode == VFS_DIALOG_SAVEAS) {
      createFileNamePanel(dialog, fileName);
    } else {
      // create file filter panel
      createFileFilterPanel(dialog);
    }
    // create our ok/cancel buttons
    createButtonPanel(dialog);

    initialFile = tmpInitialFile;
    // set the initial file selection
    try {
      if (initialFile != null || rootFile != null) {
        vfsBrowser.selectTreeItemByFileObject(initialFile != null ? initialFile : rootFile, true);
        updateParentFileCombo(initialFile != null ? initialFile : rootFile);
        setSelectedFile(initialFile != null ? initialFile : rootFile);
        openFileCombo.setText(
            initialFile != null ? initialFile.getName().getURI() : rootFile.getName().getURI());
      }
    } catch (FileSystemException e) {
      MessageBox box = new MessageBox(dialog.getShell());
      box.setText(Messages.getString("VfsFileChooserDialog.error")); // $NON-NLS-1$
      box.setMessage(e.getMessage());
      box.open();
    }

    // set the size and show the dialog
    int height = 550;
    int width = 800;
    dialog.setSize(width, height);
    Rectangle bounds = dialog.getDisplay().getPrimaryMonitor().getClientArea();
    int x = (bounds.width - width) / 2;
    int y = (bounds.height - height) / 2;
    dialog.setLocation(x, y);
    dialog.open();

    if (rootFile != null && fileDialogMode == VFS_DIALOG_SAVEAS) {
      if (!rootFile.getFileSystem().hasCapability(Capability.WRITE_CONTENT)) {
        MessageBox messageDialog = new MessageBox(dialog.getShell(), SWT.OK);
        messageDialog.setText(Messages.getString("VfsFileChooserDialog.warning")); // $NON-NLS-1$
        messageDialog.setMessage(
            Messages.getString("VfsFileChooserDialog.noWriteSupport")); // $NON-NLS-1$
        messageDialog.open();
      }
    }

    vfsBrowser.fileSystemTree.forceFocus();
    while (!dialog.isDisposed()) {
      if (!dialog.getDisplay().readAndDispatch()) dialog.getDisplay().sleep();
    }

    // we just woke up, we are probably disposed already..
    if (!dialog.isDisposed()) {
      hideCustomPanelChildren();
      dialog.dispose();
    }
    if (okPressed) {
      FileObject returnFile = vfsBrowser.getSelectedFileObject();
      if (returnFile != null && fileDialogMode == VFS_DIALOG_SAVEAS) {
        try {
          if (returnFile.getType().equals(FileType.FILE)) {
            returnFile = returnFile.getParent();
          }
          returnFile = returnFile.resolveFile(enteredFileName);
        } catch (FileSystemException e) {
          e.printStackTrace();
        }
      }

      // put user/pass on the filename so it comes out in the getUri call.
      if (!returnUserAuthenticatedFile) {
        // make sure to put the user/pass on the url if it's not there
        if (returnFile != null && returnFile.getName() instanceof URLFileName) {
          URLFileName urlFileName = (URLFileName) returnFile.getName();
          if (urlFileName.getUserName() == null || urlFileName.getPassword() == null) {
            // set it
            String user = "";
            String pass = "";

            UserAuthenticator userAuthenticator =
                DefaultFileSystemConfigBuilder.getInstance()
                    .getUserAuthenticator(returnFile.getFileSystem().getFileSystemOptions());

            if (userAuthenticator != null) {
              UserAuthenticationData data =
                  userAuthenticator.requestAuthentication(AUTHENTICATOR_TYPES);
              user = String.valueOf(data.getData(UserAuthenticationData.USERNAME));
              pass = String.valueOf(data.getData(UserAuthenticationData.PASSWORD));
              try {
                user = URLEncoder.encode(user, "UTF-8");
                pass = URLEncoder.encode(pass, "UTF-8");
              } catch (UnsupportedEncodingException e) {
                // ignore, just use the un encoded values
              }
            }

            // build up the url with user/pass on it
            int port = urlFileName.getPort();
            String portString = (port < 1) ? "" : (":" + port);
            String urlWithUserPass =
                urlFileName.getScheme()
                    + "://"
                    + user
                    + ":"
                    + pass
                    + "@"
                    + urlFileName.getHostName()
                    + portString
                    + urlFileName.getPath();

            try {
              returnFile = currentPanel.resolveFile(urlWithUserPass);
            } catch (FileSystemException e) {
              // couldn't resolve with user/pass on url??? interesting
              e.printStackTrace();
            }
          }
        }
      }
      return returnFile;
    } else {
      return null;
    }
  }