private void refreshWorkspaceList() {
   LoadingPopup.showMessage(constants.LoadingWorkspaces());
   repositoryService.listWorkspaces(
       new GenericCallback<String[]>() {
         public void onSuccess(String[] workspaces) {
           availableWorkspacesListBox.clear();
           for (String workspace : workspaces) {
             availableWorkspacesListBox.addItem(workspace);
           }
           LoadingPopup.close();
         }
       });
 }
  private void refreshModuleList(String selectedWorkspaceName) {
    if (selectedWorkspaceName == null || "".equals(selectedWorkspaceName)) {
      return;
    }

    LoadingPopup.showMessage(constants.LoadingWorkspaces());
    moduleService.listModules(
        selectedWorkspaceName,
        new GenericCallback<Module[]>() {
          public void onSuccess(Module[] packageConfigData) {
            selectedModulesListBox.clear();
            for (Module p : packageConfigData) {
              selectedModulesListBox.addItem(p.getName());
            }
            LoadingPopup.close();
          }
        });

    LoadingPopup.showMessage(constants.LoadingWorkspaces());
    moduleService.listModules(
        new GenericCallback<Module[]>() {
          public void onSuccess(Module[] packageConfigData) {
            availableModulesListBox.clear();
            for (Module p : packageConfigData) {
              boolean isSelected = false;
              for (int i = 0; i < selectedModulesListBox.getItemCount(); i++) {
                if (p.getName().equals(selectedModulesListBox.getItemText(i))) {
                  isSelected = true;
                }
              }
              if (!isSelected) {
                availableModulesListBox.addItem(p.getName());
              }
            }
            LoadingPopup.close();
          }
        });
  }