/**
  * Handler for deleting multiple entries. Needs items in selectedRows, which
  * is only filled with any data in multiSelect mode
  */
 public async deleteSelected(): Promise<void> {
     const content = this.translate.instant('This will delete all selected assignments.');
     if (await this.promptService.open('Are you sure?', content)) {
         for (const assignment of this.selectedRows) {
             await this.repo.delete(assignment);
         }
     }
 }

 /**
  * Handler for deleting multiple entries. Needs items in selectedRows, which
  * is only filled with any data in multiSelect mode
  */
 public async deleteSelected(): Promise<void> {
     const title = this.translate.instant('Are you sure you want to delete all selected elections?');
     if (await this.promptService.open(title, null)) {
         for (const assignment of this.selectedRows) {
             await this.repo.delete(assignment);
         }
     }
 }

    /**
     * Mark/unmark an option as elected
     *
     * @param option
     */
    public toggleElected(option: ViewAssignmentPollOption): void {
        if (!this.operator.hasPerms('assignments.can_manage')) {
            return;
        }

        // TODO additional conditions: assignment not finished?
        const viewAssignmentRelatedUser = this.assignment.assignmentRelatedUsers.find(
            user => user.user_id === option.user_id
        );
        if (viewAssignmentRelatedUser) {
            this.assignmentRepo.markElected(viewAssignmentRelatedUser, this.assignment, !option.is_elected);
        }
    }

 /**
  * Sends the edited poll description to the server
  * TODO: Better feedback
  */
 public async onEditDescriptionButton(): Promise<void> {
     const desc: string = this.descriptionForm.get('description').value;
     await this.assignmentRepo.updatePoll({ description: desc }, this.poll).then(null, this.raiseError);
 }

 /**
  * Toggles the 'published' state
  */
 public togglePublished(): void {
     this.assignmentRepo.updatePoll({ published: !this.poll.published }, this.poll);
 }

 dialogRef.afterClosed().subscribe(result => {
     if (result) {
         this.assignmentRepo.updateVotes(result, this.poll).then(null, this.raiseError);
     }
 });

 /**
  * Handler for the 'delete poll' button
  *
  * TODO: Some confirmation (advanced logic (e.g. not deleting published?))
  */
 public async onDeletePoll(): Promise<void> {
     const title = this.translate.instant('Are you sure you want to delete this ballot?');
     if (await this.promptService.open(title, null)) {
         await this.assignmentRepo.deletePoll(this.poll).then(null, this.raiseError);
     }
 }