/** Handler for the Rename Code menu option. */
  public void handleRenameCode() {
    SketchFile current = editor.getCurrentTab().getSketchFile();

    editor.status.clearState();
    // make sure the user didn't hide the sketch folder
    ensureExistence();

    if (current.isPrimary() && editor.untitled) {
      Base.showMessage(
          tr("Sketch is Untitled"),
          tr("How about saving the sketch first \n" + "before trying to rename it?"));
      return;
    }

    // if read-only, give an error
    if (isReadOnly(
        BaseNoGui.librariesIndexer.getInstalledLibraries(), BaseNoGui.getExamplesPath())) {
      // if the files are read-only, need to first do a "save as".
      Base.showMessage(
          tr("Sketch is Read-Only"),
          tr(
              "Some files are marked \"read-only\", so you'll\n"
                  + "need to re-save the sketch in another location,\n"
                  + "and try again."));
      return;
    }

    // ask for new name of file (internal to window)
    // TODO maybe just popup a text area?
    renamingCode = true;
    String prompt = current.isPrimary() ? "New name for sketch:" : "New name for file:";
    String oldName = current.getPrettyName();
    editor.status.edit(prompt, oldName);
  }
  /** Remove a piece of code from the sketch and from the disk. */
  public void handleDeleteCode() throws IOException {
    SketchFile current = editor.getCurrentTab().getSketchFile();
    editor.status.clearState();
    // make sure the user didn't hide the sketch folder
    ensureExistence();

    // if read-only, give an error
    if (isReadOnly(
        BaseNoGui.librariesIndexer.getInstalledLibraries(), BaseNoGui.getExamplesPath())) {
      // if the files are read-only, need to first do a "save as".
      Base.showMessage(
          tr("Sketch is Read-Only"),
          tr(
              "Some files are marked \"read-only\", so you'll\n"
                  + "need to re-save the sketch in another location,\n"
                  + "and try again."));
      return;
    }

    // confirm deletion with user, yes/no
    Object[] options = {tr("OK"), tr("Cancel")};
    String prompt =
        current.isPrimary()
            ? tr("Are you sure you want to delete this sketch?")
            : I18n.format(tr("Are you sure you want to delete \"{0}\"?"), current.getPrettyName());
    int result =
        JOptionPane.showOptionDialog(
            editor,
            prompt,
            tr("Delete"),
            JOptionPane.YES_NO_OPTION,
            JOptionPane.QUESTION_MESSAGE,
            null,
            options,
            options[0]);
    if (result == JOptionPane.YES_OPTION) {
      if (current.isPrimary()) {
        sketch.delete();
        editor.base.handleClose(editor);
      } else {
        // delete the file
        if (!current.delete(sketch.getBuildPath().toPath())) {
          Base.showMessage(
              tr("Couldn't do it"),
              I18n.format(tr("Could not delete \"{0}\"."), current.getFileName()));
          return;
        }

        // just set current tab to the main tab
        editor.selectTab(0);

        // update the tabs
        editor.header.repaint();
      }
    }
  }
  /**
   * This is called upon return from entering a new file name. (that is, from either newCode or
   * renameCode after the prompt) This code is almost identical for both the newCode and renameCode
   * cases, so they're kept merged except for right in the middle where they diverge.
   */
  protected void nameCode(String newName) {
    // make sure the user didn't hide the sketch folder
    ensureExistence();

    newName = newName.trim();
    if (newName.equals("")) return;

    if (newName.charAt(0) == '.') {
      Base.showWarning(tr("Problem with rename"), tr("The name cannot start with a period."), null);
      return;
    }

    FileUtils.SplitFile split = FileUtils.splitFilename(newName);
    if (split.extension.equals("")) split.extension = Sketch.DEFAULT_SKETCH_EXTENSION;

    if (!Sketch.EXTENSIONS.contains(split.extension)) {
      String msg = I18n.format(tr("\".{0}\" is not a valid extension."), split.extension);
      Base.showWarning(tr("Problem with rename"), msg, null);
      return;
    }

    // Sanitize name
    split.basename = BaseNoGui.sanitizeName(split.basename);
    newName = split.join();

    if (renamingCode) {
      SketchFile current = editor.getCurrentTab().getSketchFile();

      if (current.isPrimary()) {
        if (!split.extension.equals(Sketch.DEFAULT_SKETCH_EXTENSION)) {
          Base.showWarning(
              tr("Problem with rename"), tr("The main file cannot use an extension"), null);
          return;
        }

        // Primary file, rename the entire sketch
        final File parent = sketch.getFolder().getParentFile();
        File newFolder = new File(parent, split.basename);
        try {
          sketch.renameTo(newFolder);
        } catch (IOException e) {
          // This does not pass on e, to prevent showing a backtrace for
          // "normal" errors.
          Base.showWarning(tr("Error"), e.getMessage(), null);
          return;
        }

        editor.base.rebuildSketchbookMenus();
      } else {
        // Non-primary file, rename just that file
        try {
          current.renameTo(newName);
        } catch (IOException e) {
          // This does not pass on e, to prevent showing a backtrace for
          // "normal" errors.
          Base.showWarning(tr("Error"), e.getMessage(), null);
          return;
        }
      }

    } else { // creating a new file
      SketchFile file;
      try {
        file = sketch.addFile(newName);
        editor.addTab(file, "");
      } catch (IOException e) {
        // This does not pass on e, to prevent showing a backtrace for
        // "normal" errors.
        Base.showWarning(tr("Error"), e.getMessage(), null);
        return;
      }
      editor.selectTab(editor.findTabIndex(file));
    }

    // update the tabs
    editor.header.rebuild();
  }