private AppEngineSupportConfigurable(FrameworkSupportModel model) {
      super(AppEngineSupportProvider.this, model);
      mySdkEditor = new AppEngineSdkEditor(model.getProject());
      mySdkPanel.add(
          LabeledComponent.create(mySdkEditor.getMainComponent(), "Google App Engine SDK:"),
          BorderLayout.CENTER);
      PersistenceApiComboboxUtil.setComboboxModel(myPersistenceApiComboBox, true);
      if (model.isFrameworkSelected(JPA_PROVIDER_ID)) {
        myPersistenceApiComboBox.setSelectedItem(PersistenceApi.JPA.getDisplayName());
      }
      model.addFrameworkListener(this);

      myErrorLabel = new HyperlinkLabel();
      myErrorLabel.setIcon(AllIcons.RunConfigurations.ConfigurationWarning);
      myErrorLabel.setVisible(false);
      myErrorLabel.setHyperlinkTarget(AppEngineSdkUtil.APP_ENGINE_DOWNLOAD_URL);
      myErrorPanel.add(BorderLayout.CENTER, myErrorLabel);

      final Component component = mySdkEditor.getComboBox().getEditor().getEditorComponent();
      if (component instanceof JTextComponent) {
        ((JTextComponent) component)
            .getDocument()
            .addDocumentListener(
                new DocumentAdapter() {
                  @Override
                  protected void textChanged(DocumentEvent e) {
                    checkSdk();
                  }
                });
      }
      checkSdk();
    }
    private void checkSdk() {
      final String path = mySdkEditor.getPath();
      if (StringUtil.isEmptyOrSpaces(path)) {
        myErrorLabel.setVisible(true);
        myErrorLabel.setHyperlinkText("App Engine SDK path not specified. ", "Download", "");
        myMainPanel.repaint();
        return;
      }

      final ValidationResult result = AppEngineSdkUtil.checkPath(path);
      myErrorLabel.setVisible(!result.isOk());
      if (!result.isOk()) {
        myErrorLabel.setText("App Engine SDK path is not correct");
      }
      myMainPanel.repaint();
    }