openproject/frontend/app/components/table-pagination/pagination-instance.ts

//-- copyright
// OpenProject is a project management system.
// Copyright (C) 2012-2017 the OpenProject Foundation (OPF)
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License version 3.
//
// OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
// Copyright (C) 2006-2017 Jean-Philippe Lang
// Copyright (C) 2010-2013 the ChiliProject Team
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
//
// See doc/COPYRIGHT.rdoc for more details.
//++


import {IPaginationOptions} from 'core-components/table-pagination/pagination-service';
export class PaginationInstance {

  constructor(public page:number,
              public total:number,
              public perPage:number) {
  }

  public getLowerPageBound() {
    return this.perPage * (this.page - 1) + 1;
  }

  public getUpperPageBound(limit:number) {
    return Math.min(this.perPage * this.page, limit);
  }

  public nextPage() {
    this.page += 1;
  }

  public previousPage() {
    this.page -= 1;
  }
}