/microsoft/xzsyw/Syw/Syw/Syw.Framework/Mvc/Models/PagerModel.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;



namespace Syw.Framework.Mvc.Models

{

    public class PagerModel

    {

        #region Constructors



        public PagerModel()

        {



        }





        #endregion Constructors



        #region Fields



        private int individualPagesDisplayedCount;

        private int pageIndex = -2;

        private int pageSize;



        private bool? showFirst;

        private bool? showIndividualPages;

        private bool? showLast;

        private bool? showNext;

        private bool? showPagerItems;

        private bool? showPrevious;

        private bool? showTotalSummary;



        private int totalRecords;

        private string firstButtonText;

        private string lastButtonText;

        private string nextButtonText;

        private string previousButtonText;

        private string currentPageText;



        #endregion Fields



        #region Properties



        /// <summary>

        /// Gets the current page index

        /// </summary>

        public int CurrentPage

        {

            get

            {

                return (this.PageIndex + 1);

            }

        }



        /// <summary>

        /// Gets or sets a count of individual pages to be displayed

        /// </summary>

        public int IndividualPagesDisplayedCount

        {

            get

            {

                if (individualPagesDisplayedCount <= 0)

                    return 5;

                else

                    return individualPagesDisplayedCount;

            }

            set

            {

                individualPagesDisplayedCount = value;

            }

        }



        /// <summary>

        /// Gets the current page index

        /// </summary>

        public int PageIndex

        {

            get

            {

                if (this.pageIndex < 0)

                {

                    return 0;

                }

                return this.pageIndex;

            }

            set

            {

                this.pageIndex = value;

            }

        }



        /// <summary>

        /// Gets or sets a page size

        /// </summary>

        public int PageSize

        {

            get

            {

                return (pageSize <= 0) ? 10 : pageSize;

            }

            set

            {

                pageSize = value;

            }

        }



        /// <summary>

        /// Gets or sets a value indicating whether to show "first"

        /// </summary>

        public bool ShowFirst

        {

            get

            {

                return showFirst ?? true;

            }

            set

            {

                showFirst = value;

            }

        }



        /// <summary>

        /// Gets or sets a value indicating whether to show "individual pages"

        /// </summary>

        public bool ShowIndividualPages

        {

            get

            {

                return showIndividualPages ?? true;

            }

            set

            {

                showIndividualPages = value;

            }

        }



        /// <summary>

        /// Gets or sets a value indicating whether to show "last"

        /// </summary>

        public bool ShowLast

        {

            get

            {

                return showLast ?? true;

            }

            set

            {

                showLast = value;

            }

        }



        /// <summary>

        /// Gets or sets a value indicating whether to show "next"

        /// </summary>

        public bool ShowNext

        {

            get

            {

                return showNext ?? true;

            }

            set

            {

                showNext = value;

            }

        }



        /// <summary>

        /// Gets or sets a value indicating whether to show pager items

        /// </summary>

        public bool ShowPagerItems

        {

            get

            {

                return showPagerItems ?? true;

            }

            set

            {

                showPagerItems = value;

            }

        }



        /// <summary>

        /// Gets or sets a value indicating whether to show "previous"

        /// </summary>

        public bool ShowPrevious

        {

            get

            {

                return showPrevious ?? true;

            }

            set

            {

                showPrevious = value;

            }

        }



        /// <summary>

        /// Gets or sets a value indicating whether to show "total summary"

        /// </summary>

        public bool ShowTotalSummary

        {

            get

            {

                return showTotalSummary ?? false;

            }

            set

            {

                showTotalSummary = value;

            }

        }



        /// <summary>

        /// Gets a total pages count

        /// </summary>

        public int TotalPages

        {

            get

            {

                if ((this.TotalRecords == 0) || (this.PageSize == 0))

                {

                    return 0;

                }

                int num = this.TotalRecords / this.PageSize;

                if ((this.TotalRecords % this.PageSize) > 0)

                {

                    num++;

                }

                return num;

            }

        }



        /// <summary>

        /// Gets or sets a total records count

        /// </summary>

        public int TotalRecords

        {

            get

            {

                return totalRecords;

            }

            set

            {

                totalRecords = value;

            }

        }



        /// <summary>

        /// Gets or sets the first button text

        /// </summary>

        public string FirstButtonText

        {

            get

            {

                return (!string.IsNullOrEmpty(firstButtonText)) ?

                    firstButtonText :

                    "???";

            }

            set

            {

                firstButtonText = value;

            }

        }



        /// <summary>

        /// Gets or sets the last button text

        /// </summary>

        public string LastButtonText

        {

            get

            {

                return (!string.IsNullOrEmpty(lastButtonText)) ?

                    lastButtonText :

                    "??";

            }

            set

            {

                lastButtonText = value;

            }

        }



        /// <summary>

        /// Gets or sets the next button text

        /// </summary>

        public string NextButtonText

        {

            get

            {

                return (!string.IsNullOrEmpty(nextButtonText)) ?

                    nextButtonText :

                    "???";

            }

            set

            {

                nextButtonText = value;

            }

        }



        /// <summary>

        /// Gets or sets the previous button text

        /// </summary>

        public string PreviousButtonText

        {

            get

            {

                return (!string.IsNullOrEmpty(previousButtonText)) ?

                    previousButtonText :

                    "???";

            }

            set

            {

                previousButtonText = value;

            }

        }



        /// <summary>

        /// Gets or sets the current page text

        /// </summary>

        public string CurrentPageText

        {

            get

            {

                return (!string.IsNullOrEmpty(currentPageText)) ?

                    currentPageText :

                   "? {0} of {1} ( ? {2})";

            }

            set

            {

                currentPageText = value;

            }

        }



        /// <summary>

        /// Gets or sets the route name or action name

        /// </summary>

        public string RouteActionName { get; set; }



        /// <summary>

        /// Gets or sets whether the links are created using RouteLink instead of Action Link 

        /// (for additional route values such as slugs or page numbers)

        /// </summary>

        public bool UseRouteLinks { get; set; }



        /// <summary>

        /// Gets or sets the RouteValues object. Allows for custom route values other than page.

        /// </summary>

        public IRouteValues RouteValues { get; set; }



        #endregion Properties



        #region Methods



        /// <summary>

        /// Gets first individual page index

        /// </summary>

        /// <returns>Page index</returns>

        public int GetFirstIndividualPageIndex()

        {

            if ((this.TotalPages < this.IndividualPagesDisplayedCount) ||

                ((this.PageIndex - (this.IndividualPagesDisplayedCount / 2)) < 0))

            {

                return 0;

            }

            if ((this.PageIndex + (this.IndividualPagesDisplayedCount / 2)) >= this.TotalPages)

            {

                return (this.TotalPages - this.IndividualPagesDisplayedCount);

            }

            return (this.PageIndex - (this.IndividualPagesDisplayedCount / 2));

        }



        /// <summary>

        /// Get last individual page index

        /// </summary>

        /// <returns>Page index</returns>

        public int GetLastIndividualPageIndex()

        {

            int num = this.IndividualPagesDisplayedCount / 2;

            if ((this.IndividualPagesDisplayedCount % 2) == 0)

            {

                num--;

            }

            if ((this.TotalPages < this.IndividualPagesDisplayedCount) ||

                ((this.PageIndex + num) >= this.TotalPages))

            {

                return (this.TotalPages - 1);

            }

            if ((this.PageIndex - (this.IndividualPagesDisplayedCount / 2)) < 0)

            {

                return (this.IndividualPagesDisplayedCount - 1);

            }

            return (this.PageIndex + num);

        }



        #endregion Methods

    }

    /// <summary>

    /// Interface for custom RouteValues objects

    /// </summary>

    public interface IRouteValues

    {

        int page { get; set; }

    }

    /// <summary>

    /// Class that has a slug and page for route values. Used for Topic (posts) and 

    /// Forum (topics) pagination

    /// </summary>

    public class RouteValues : IRouteValues

    {

        public int id { get; set; }

        public string slug { get; set; }

        public int page { get; set; }

    }



}