private void onRemove() {
    if (getSelectedItems() != null && getSelectedItems().size() > 0) {
      ConfirmationModel model = (ConfirmationModel) getWindow();

      if (model.getProgress() != null) {
        return;
      }

      ArrayList<VdcActionParametersBase> list = new ArrayList<VdcActionParametersBase>();
      for (Object perm : getSelectedItems()) {
        PermissionsOperationsParameters tempVar = new PermissionsOperationsParameters();
        tempVar.setPermission((Permission) perm);
        list.add(tempVar);
      }

      model.startProgress(null);

      Frontend.getInstance()
          .runMultipleAction(
              VdcActionType.RemoveSystemPermission,
              list,
              new IFrontendMultipleActionAsyncCallback() {
                @Override
                public void executed(FrontendMultipleActionAsyncResult result) {

                  ConfirmationModel localModel = (ConfirmationModel) result.getState();
                  localModel.stopProgress();
                  cancel();
                }
              },
              model);
    }
  }
  private void onAttach() {
    AdElementListModel model = (AdElementListModel) getWindow();

    if (model.getProgress() != null) {
      return;
    }

    if (model.getSelectedItems() == null) {
      cancel();
      return;
    }

    ArrayList<DbUser> items = new ArrayList<DbUser>();
    for (Object item : model.getItems()) {
      EntityModel entityModel = (EntityModel) item;
      if (entityModel.getIsSelected()) {
        items.add((DbUser) entityModel.getEntity());
      }
    }

    Role role = model.getRole().getSelectedItem();

    ArrayList<VdcActionParametersBase> list = new ArrayList<VdcActionParametersBase>();
    for (DbUser user : items) {
      Permission perm = new Permission(user.getId(), role.getId(), null, null);

      if (user.isGroup()) {
        DbGroup group = new DbGroup();
        group.setId(user.getId());
        group.setName(user.getFirstName());
        group.setDomain(user.getDomain());
        group.setExternalId(user.getExternalId());
        group.setNamespace(user.getNamespace());
        PermissionsOperationsParameters tempVar2 = new PermissionsOperationsParameters();
        tempVar2.setPermission(perm);
        tempVar2.setGroup(group);
        list.add(tempVar2);
      } else {
        PermissionsOperationsParameters tempVar3 = new PermissionsOperationsParameters();
        tempVar3.setPermission(perm);
        tempVar3.setUser(user);
        list.add(tempVar3);
      }
    }

    model.startProgress(null);

    Frontend.getInstance()
        .runMultipleAction(
            VdcActionType.AddSystemPermission,
            list,
            new IFrontendMultipleActionAsyncCallback() {
              @Override
              public void executed(FrontendMultipleActionAsyncResult result) {

                AdElementListModel localModel = (AdElementListModel) result.getState();
                localModel.stopProgress();
                cancel();
              }
            },
            model);
  }
  private void onAdd() {
    AdElementListModel model = (AdElementListModel) getWindow();

    if (model.getProgress() != null) {
      return;
    }

    if (!model.getIsEveryoneSelected() && model.getSelectedItems() == null) {
      cancel();
      return;
    }

    ArrayList<DbUser> items = new ArrayList<DbUser>();
    if (model.getIsEveryoneSelected()) {
      DbUser tempVar = new DbUser();
      tempVar.setId(ApplicationGuids.everyone.asGuid());
      items.add(tempVar);
    } else {
      for (Object item : model.getItems()) {
        EntityModel entityModel = (EntityModel) item;
        if (entityModel.getIsSelected()) {
          items.add((DbUser) entityModel.getEntity());
        }
      }
    }

    Role role = (Role) model.getRole().getSelectedItem();
    // adGroup/user

    ArrayList<VdcActionParametersBase> list = new ArrayList<VdcActionParametersBase>();
    for (DbUser user : items) {
      Permissions tempVar2 = new Permissions();
      tempVar2.setad_element_id(user.getId());
      tempVar2.setrole_id(role.getId());
      Permissions perm = tempVar2;
      perm.setObjectId(getEntityGuid());
      perm.setObjectType(this.getObjectType());

      if (user.isGroup()) {
        DbGroup group = new DbGroup();
        group.setId(user.getId());
        group.setExternalId(user.getExternalId());
        group.setName(user.getFirstName());
        group.setDomain(user.getDomain());
        group.setNamespace(user.getNamespace());
        PermissionsOperationsParameters tempVar3 = new PermissionsOperationsParameters();
        tempVar3.setPermission(perm);
        tempVar3.setGroup(group);
        list.add(tempVar3);
      } else {
        PermissionsOperationsParameters tempVar4 = new PermissionsOperationsParameters();
        tempVar4.setPermission(perm);
        tempVar4.setUser(user);
        list.add(tempVar4);
      }
    }

    model.startProgress(null);

    Frontend.getInstance()
        .runMultipleAction(
            VdcActionType.AddPermission,
            list,
            new IFrontendMultipleActionAsyncCallback() {
              @Override
              public void executed(FrontendMultipleActionAsyncResult result) {

                AdElementListModel localModel = (AdElementListModel) result.getState();
                localModel.stopProgress();
                cancel();
              }
            },
            model);
  }