public StateListPageViewModel()
        {
            Country = new GeoCountryViewModel();
            States = new List<IGeoZone>();
            Paging = new PaginationSettings();

        }
 public ProductListViewModel()
 {
     Paging = new PaginationSettings();
 }
 public LogListViewModel()
 {
     LogPage = new List<ILogItem>();
     Paging = new PaginationSettings();
 }
        /// <summary>
        /// the problem with paging is when you have too many pages
        /// to fit in the pager based on PaginationSettings.MaxPagerItems
        /// you need a strategy to leave out links for some pages
        /// while still being possible to navigate to any page
        /// this class implements one such strategy (implemented by  Martijn Boland)
        /// if you want to implement a different strategy you can plugin your own
        /// IBuildPaginationLinks implementation
        /// </summary>
        /// <param name="paginationSettings"></param>
        /// <param name="generateUrl"></param>
        /// <param name="firstPageText"></param>
        /// <param name="firstPageTitle"></param>
        /// <param name="previousPageText"></param>
        /// <param name="previousPageTitle"></param>
        /// <param name="nextPageText"></param>
        /// <param name="nextPageTitle"></param>
        /// <param name="lastPageText"></param>
        /// <param name="lastPageTitle"></param>
        /// <param name="spacerText"></param>
        /// <returns></returns>
        public List<PaginationLink> BuildPaginationLinks(
            PaginationSettings paginationSettings, 
            Func<int, string> generateUrl,
            string firstPageText,
            string firstPageTitle,
            string previousPageText,
            string previousPageTitle,
            string nextPageText,
            string nextPageTitle,
            string lastPageText,
            string lastPageTitle,
            string spacerText = "..."
            )
        {
            List<PaginationLink> paginationLinks = new List<PaginationLink>();

            int totalPages = (int)Math.Ceiling(paginationSettings.TotalItems / (double)paginationSettings.ItemsPerPage);

            // First page
            if (paginationSettings.ShowFirstLast)
            {
                var isActive = paginationSettings.CurrentPage > 1;
                if(isActive || !paginationSettings.SuppressInActiveFirstLast)
                paginationLinks.Add(
                    new PaginationLink
                    {
                        Active = isActive,
                        Text = firstPageText,
                        Title = firstPageTitle,
                        PageNumber = 1,
                        Url = generateUrl(1)
                    });
            }

            // Previous page
            if (paginationSettings.UseReverseIncrement)
            {
                var isActive = paginationSettings.CurrentPage < totalPages;

                //SuppressEmptyNextPrev
                if(isActive)
                {
                    paginationLinks.Add(
                        new PaginationLink
                        {
                            Active = true,
                            PageNumber = paginationSettings.CurrentPage + 1,
                            Text = previousPageText,
                            Title = previousPageTitle,
                            Url = generateUrl(paginationSettings.CurrentPage + 1)
                        });
                }
                else
                {
                    if(!paginationSettings.SuppressEmptyNextPrev)
                    {
                        paginationLinks.Add(
                        new PaginationLink
                        {
                            Active = false,
                            Text = previousPageText,
                            PageNumber = totalPages
                        });
                    }
                    
                }

               
            }
            else
            {
                var isActive = paginationSettings.CurrentPage > 1;
                if(isActive)
                {
                    paginationLinks.Add(new PaginationLink
                    {
                        Active = true,
                        Text = previousPageText,
                        Title = previousPageTitle,
                        PageNumber = paginationSettings.CurrentPage - 1,
                        Url = generateUrl(paginationSettings.CurrentPage - 1)
                    });
                }
                else
                {
                    if(!paginationSettings.SuppressEmptyNextPrev)
                    {
                        paginationLinks.Add(new PaginationLink
                        {
                            Active = false,
                            Text = previousPageText,
                            PageNumber = 1,
                            Url = generateUrl(1)
                        });
                    }
                    
                }

                
            }
            


            if (paginationSettings.ShowNumbered)
            {
                var start = 1;
                var end = totalPages;
                var nrOfPagesToDisplay = paginationSettings.MaxPagerItems;

                if (totalPages > nrOfPagesToDisplay)
                {
                    var middle = (int)Math.Ceiling(nrOfPagesToDisplay / 2d) - 1;
                    var below = (paginationSettings.CurrentPage - middle);
                    var above = (paginationSettings.CurrentPage + middle);

                    if (below < 2)
                    {
                        above = nrOfPagesToDisplay;
                        below = 1;
                    }
                    else if (above > (totalPages - 2))
                    {
                        above = totalPages;
                        below = (totalPages - nrOfPagesToDisplay + 1);
                    }

                    start = below;
                    end = above;
                }

                if (start > 1)
                {
                    paginationLinks.Add(new PaginationLink
                    {
                        Active = true,
                        PageNumber = 1,
                        IsCurrent = (paginationSettings.CurrentPage == 1 ? true : false),
                        Text = "1",
                        Url = generateUrl(1)
                    });

                    if (start > 3)
                    {
                        paginationLinks.Add(new PaginationLink
                        {
                            Active = true,
                            PageNumber = 2,
                            IsCurrent = (paginationSettings.CurrentPage == 2 ? true : false),
                            Text = "2",
                            Url = generateUrl(2)
                        });
                    }

                    if (start > 2)
                    {
                        paginationLinks.Add(new PaginationLink
                        {
                            Active = false,
                            Text = spacerText,
                            IsSpacer = true
                        });
                    }
                }

                for (var i = start; i <= end; i++)
                {
                    if (i == paginationSettings.CurrentPage || (paginationSettings.CurrentPage <= 0 && i == 1))
                    {
                        paginationLinks.Add(new PaginationLink
                        {
                            Active = true,
                            PageNumber = i,
                            IsCurrent = (paginationSettings.CurrentPage == i ? true : false),
                            Text = i.ToString(),
                            Url = generateUrl(i)
                        });
                    }
                    else
                    {
                        paginationLinks.Add(new PaginationLink
                        {
                            Active = true,
                            PageNumber = i,
                            Text = i.ToString(),
                            IsCurrent = (paginationSettings.CurrentPage == i ? true : false),
                            Url = generateUrl(i)
                        });
                    }
                }

                if (end < totalPages)
                {
                    if (end < totalPages - 1)
                    {
                        paginationLinks.Add(new PaginationLink
                        {
                            Active = false,
                            Text = spacerText,
                            IsSpacer = true
                        });
                    }
                    if (totalPages - 2 > end)
                    {
                        paginationLinks.Add(new PaginationLink
                        {
                            Active = true,
                            PageNumber = totalPages - 1,
                            Text = (totalPages - 1).ToString(),
                            IsCurrent = (paginationSettings.CurrentPage == (totalPages - 1) ? true : false),
                            Url = generateUrl(totalPages - 1)
                        });
                    }

                    paginationLinks.Add(new PaginationLink
                    {
                        Active = true,
                        PageNumber = totalPages,
                        Text = totalPages.ToString(),
                        IsCurrent = (paginationSettings.CurrentPage == totalPages ? true : false),
                        Url = generateUrl(totalPages)
                    });
                }

            }



            // Next page
            if (paginationSettings.UseReverseIncrement)
            {


                //SuppressEmptyNextPrev
                var isActive = paginationSettings.CurrentPage > 1;

                if(isActive)
                {
                    paginationLinks.Add(
                        new PaginationLink
                        {
                            Active = true,
                            Text = nextPageText,
                            Title = nextPageTitle,
                            PageNumber = paginationSettings.CurrentPage - 1,
                            Url = generateUrl(paginationSettings.CurrentPage - 1)
                        });
                }
                else
                {
                    if(!paginationSettings.SuppressEmptyNextPrev)
                    {
                        paginationLinks.Add(
                            new PaginationLink
                            {
                                Active = false,
                                Text = nextPageText,
                                PageNumber = 1,
                                Url = generateUrl(1)
                            });
                    }
                }

                //paginationLinks.Add(
                // paginationSettings.CurrentPage > 1 ? new PaginationLink
                // {
                //     Active = true,
                //     Text = nextPageText,
                //     Title = nextPageTitle,
                //     PageNumber = paginationSettings.CurrentPage + 1,
                //     Url = generateUrl(paginationSettings.CurrentPage + 1)
                // } : new PaginationLink
                // {
                //     Active = false,
                //     Text = nextPageText,
                //     PageNumber = 1,
                //     Url = generateUrl(1)
                // });
            }
            else
            {
                var isActive = paginationSettings.CurrentPage < totalPages;
                if(isActive)
                {
                    paginationLinks.Add(new PaginationLink
                    {
                        Active = true,
                        PageNumber = paginationSettings.CurrentPage + 1,
                        Text = nextPageText,
                        Title = nextPageTitle,
                        Url = generateUrl(paginationSettings.CurrentPage + 1)
                    });
                }
                else
                {
                    if(!paginationSettings.SuppressEmptyNextPrev)
                    {
                        paginationLinks.Add(new PaginationLink
                        {
                            Active = false,
                            Text = nextPageText,
                            PageNumber = totalPages
                        });
                    }
                    
                }
 
            }
                

            // Last page
            if (paginationSettings.ShowFirstLast)
            {
                var isActive = paginationSettings.CurrentPage < totalPages;
                if(isActive || !paginationSettings.SuppressInActiveFirstLast)
                paginationLinks.Add(new PaginationLink
                {
                    Active = isActive,
                    Text = lastPageText,
                    Title = lastPageTitle,
                    PageNumber = totalPages,
                    Url = generateUrl(totalPages)
                });
            }

            
            return paginationLinks;

        }
        public override void Process(TagHelperContext context, TagHelperOutput output)
        {
            if (PagingModel == null)
            {
                // allow for passing in the settings separately
                PagingModel                           = new PaginationSettings();
                PagingModel.CurrentPage               = PageNumber;
                PagingModel.ItemsPerPage              = PageSize;
                PagingModel.TotalItems                = TotalItems;
                PagingModel.MaxPagerItems             = MaxPagerItems;
                PagingModel.SuppressEmptyNextPrev     = SuppressEmptyNextPrev;
                PagingModel.SuppressInActiveFirstLast = SuppressInActiveFirstLast;
            }

            if (ShowFirstLast)
            {
                PagingModel.ShowFirstLast = true;
            }

            if (!ShowNumbered)
            {
                PagingModel.ShowNumbered = false;
            }

            if (UseReverseIncrement)
            {
                PagingModel.UseReverseIncrement = true;

                if (SuppressEmptyNextPrev)
                {
                    PagingModel.SuppressEmptyNextPrev = true;
                }
            }


            int totalPages = (int)Math.Ceiling(PagingModel.TotalItems / (double)PagingModel.ItemsPerPage);

            // don't render if only 1 page
            if (SuppressEmptyPager && (totalPages <= 1))
            {
                output.SuppressOutput();
                return;
            }

            //change the cs-pager element into a ul
            output.TagName = "ul";


            //prepare things needed by generatpageeurl function

            urlHelper = urlHelperFactory.GetUrlHelper(actionContextAccesor.ActionContext);

            List <PaginationLink> links = linkBuilder.BuildPaginationLinks(
                PagingModel,
                GeneratePageUrl,
                FirstPageText,
                FirstPageTitle,
                PreviousPageText,
                PreviousPageTitle,
                NextPageText,
                NextPageTitle,
                LastPageText,
                LastPageTitle,
                "...");

            foreach (PaginationLink link in links)
            {
                var li = new TagBuilder("li");

                if (link.IsCurrent)
                {
                    li.AddCssClass(LiCurrentCssClass);
                }
                else
                {
                    if (!link.Active)
                    {
                        li.AddCssClass(LiNonActiveCssClass);
                    }
                    else
                    {
                        if (!string.IsNullOrWhiteSpace(LiOtherCssClass))
                        {
                            li.AddCssClass(LiOtherCssClass);
                        }
                    }
                }

                if (link.Text == PreviousPageText && !string.IsNullOrWhiteSpace(PreviousPageHtml))
                {
                    li.InnerHtml.AppendHtml(PreviousPageHtml);
                }
                else if (link.Text == NextPageText && !string.IsNullOrWhiteSpace(NextPageHtml))
                {
                    li.InnerHtml.AppendHtml(NextPageHtml);
                }
                else
                {
                    if (!link.IsCurrent && link.Active)
                    {
                        var a = new TagBuilder("a");

                        if (!string.IsNullOrWhiteSpace(LinkOtherCssClass))
                        {
                            a.AddCssClass(LinkOtherCssClass);
                        }

                        if (link.Active && (link.Url.Length > 0))
                        {
                            a.MergeAttribute("href", link.Url);
                        }
                        else
                        {
                            a.MergeAttribute("href", "#");
                        }


                        if (link.Text == "«")
                        {
                            a.InnerHtml.AppendHtml("&laquo;");
                        }
                        else if (link.Text == "»")
                        {
                            a.InnerHtml.AppendHtml("&raquo;");
                        }
                        else if (link.Text.Contains('<') && link.Text.Contains('>'))
                        {
                            //if text is an html formatted icon and contains a <tag>
                            //ex. <span class='fa fa-chevron-right'></span>
                            a.InnerHtml.AppendHtml(link.Text);
                        }
                        else
                        {
                            // if text should be html encoded
                            a.InnerHtml.Append(link.Text);
                        }

                        if (link.Title.Length > 0)
                        {
                            a.MergeAttribute("title", link.Title);
                        }

                        if (AjaxTarget.Length > 0)
                        {
                            a.MergeAttribute("data-ajax", "true");
                            a.MergeAttribute("data-ajax-mode", AjaxMode);
                            a.MergeAttribute("data-ajax-update", AjaxTarget);
                            if (AjaxSuccess.Length > 0)
                            {
                                a.MergeAttribute("data-ajax-success", AjaxSuccess);
                            }
                            if (AjaxFailure.Length > 0)
                            {
                                a.MergeAttribute("data-ajax-failure", AjaxFailure);
                            }
                            if (AjaxBegin.Length > 0)
                            {
                                a.MergeAttribute("data-ajax-begin", AjaxBegin);
                            }
                            if (AjaxComplete.Length > 0)
                            {
                                a.MergeAttribute("data-ajax-complete", AjaxComplete);
                            }
                            if (AjaxLoading.Length > 0)
                            {
                                a.MergeAttribute("data-ajax-loading", AjaxLoading);
                            }
                            if (AjaxLoadingDuration.Length > 0)
                            {
                                a.MergeAttribute("data-ajax-loading-duration", AjaxLoadingDuration);
                            }
                        }
                        li.InnerHtml.AppendHtml(a);
                    }
                    else
                    {
                        // current or not active
                        var span = new TagBuilder("span");

                        if (!string.IsNullOrWhiteSpace(LinkCurrentCssClass))
                        {
                            span.AddCssClass(LinkCurrentCssClass);
                        }

                        if (link.Text == "«")
                        {
                            span.InnerHtml.AppendHtml("&laquo;");
                        }
                        else if (link.Text == "»")
                        {
                            span.InnerHtml.AppendHtml("&raquo;");
                        }
                        else if (link.Text.Contains('<') && link.Text.Contains('>'))
                        {
                            //if text is an html formatted icon and contains a <tag>
                            //ex. <span class='fa fa-chevron-right'></span>
                            span.InnerHtml.AppendHtml(link.Text);
                        }
                        else
                        {
                            // if text should be html encoded
                            span.InnerHtml.Append(link.Text);
                        }

                        li.InnerHtml.AppendHtml(span);
                    }
                }

                output.Content.AppendHtml(li);
            }

            output.Attributes.Clear();
            output.Attributes.Add("class", UlCssClass);
        }
        public UserListViewModel()
        {

            UserList = new List<IUserInfo>();
            Paging = new PaginationSettings();
        }
 public RoleListViewModel()
 {
     SiteRoles = new List<ISiteRole>();
     Paging = new PaginationSettings();
 }
 public ViewByCategoriesViewModel()
 {
     Paging = new PaginationSettings();
     
 }
        public override void Process(TagHelperContext context, TagHelperOutput output)
        {
          
            if(PagingModel == null) 
            {
                // allow for passing in the settings separately
                PagingModel = new PaginationSettings();
                PagingModel.CurrentPage = PageNumber;
                PagingModel.ItemsPerPage = PageSize;
                PagingModel.TotalItems = TotalItems;
                PagingModel.MaxPagerItems = MaxPagerItems;
            }
            int totalPages = (int)Math.Ceiling(PagingModel.TotalItems / (double)PagingModel.ItemsPerPage);
            // don't render if only 1 page 
            if (totalPages <= 1) 
            {
                output.SuppressOutput();
                return;
            }
            
            //change the cs-pager element into a ul
            output.TagName = "ul";
            
            string querySeparator;

            //prepare things needed by generatpageeurl function
            TagBuilder linkTemplate = GenerateLinkTemplate();
            baseHref = linkTemplate.Attributes["href"] ?? string.Empty;
            querySeparator = baseHref.Contains("?") ? "&" : "?";
            baseHref = baseHref + querySeparator + PageNumberParam + "=";

            List<PaginationLink> links = linkBuilder.BuildPaginationLinks(
                PagingModel, 
                GeneratePageUrl,
                FirstPageText,
                FirstPageTitle,
                PreviousPageText,
                PreviousPageTitle,
                NextPageText,
                NextPageTitle,
                LastPageText,
                LastPageTitle,
                "...");

            foreach(PaginationLink link in links)
            {
                var li = new TagBuilder("li");

                if (link.IsCurrent)
                {
                    li.AddCssClass(LiCurrentCssClass);
                }

                if (!link.Active)
                {
                    li.AddCssClass(LiNonActiveCssClass);
                }

                var a = new TagBuilder("a");

                if(link.Url.Length > 0)
                {
                    a.MergeAttribute("href", link.Url);
                }
                else
                {
                    a.MergeAttribute("href", "#");
                }
                

                if (link.Text == "«")
                {
                    //a.InnerHtml = "&laquo;";
                    a.InnerHtml.AppendHtml("&laquo;");
                    
                }
                else if (link.Text == "»")
                {
                    //a.InnerHtml = "&raquo;";
                    a.InnerHtml.AppendHtml("&raquo;");

                }
                else
                {
                    a.InnerHtml.Append(link.Text);
                }

                if(link.Title.Length > 0)
                {
                    a.MergeAttribute("title", link.Title);
                }
                
                if (AjaxTarget.Length > 0)
                {
                    a.MergeAttribute("data-ajax", "true");
                    a.MergeAttribute("data-ajax-mode", AjaxMode);
                    a.MergeAttribute("data-ajax-update", AjaxTarget);
                }
                
                li.InnerHtml.Append(a);
                
                output.Content.Append(li);
            }

            output.Attributes.Clear();
            output.Attributes.Add("class", UlCssClass);
            
        }
        public CountryListPageViewModel()
        {
            Paging = new PaginationSettings();

        }
 public ClientListViewModel()
 {
     Clients = new List<Client>();
     Paging = new PaginationSettings();
 }
 public RoleMemberListViewModel()
 {
     Role = new RoleViewModel();
     Members = new List<IUserInfo>();
     Paging = new PaginationSettings();
 }
        public override void Process(TagHelperContext context, TagHelperOutput output)
        {
          
            if(PagingModel == null) 
            {
                // allow for passing in the settings separately
                PagingModel = new PaginationSettings();
                PagingModel.CurrentPage = PageNumber;
                PagingModel.ItemsPerPage = PageSize;
                PagingModel.TotalItems = TotalItems;
                PagingModel.MaxPagerItems = MaxPagerItems;
                PagingModel.SuppressEmptyNextPrev = SuppressEmptyNextPrev;
                PagingModel.SuppressInActiveFirstLast = SuppressInActiveFirstLast;
            }

            if(ShowFirstLast)
            {
                PagingModel.ShowFirstLast = true;
            }

            if(!ShowNumbered)
            {
                PagingModel.ShowNumbered = false;
            }

            if(UseReverseIncrement)
            {
                PagingModel.UseReverseIncrement = true;

                if(SuppressEmptyNextPrev)
                {
                    PagingModel.SuppressEmptyNextPrev = true;
                }
            }


            int totalPages = (int)Math.Ceiling(PagingModel.TotalItems / (double)PagingModel.ItemsPerPage);
            // don't render if only 1 page 
            if (SuppressEmptyPager && (totalPages <= 1))
            {
                output.SuppressOutput();
                return;
            }
            
            //change the cs-pager element into a ul
            output.TagName = "ul";
            
            
            //prepare things needed by generatpageeurl function

            urlHelper = urlHelperFactory.GetUrlHelper(actionContextAccesor.ActionContext);
            
            List<PaginationLink> links = linkBuilder.BuildPaginationLinks(
                PagingModel,
                GeneratePageUrl,
                FirstPageText,
                FirstPageTitle,
                PreviousPageText,
                PreviousPageTitle,
                NextPageText,
                NextPageTitle,
                LastPageText,
                LastPageTitle,
                "...");

            foreach(PaginationLink link in links)
            {
                var li = new TagBuilder("li");

                if (link.IsCurrent)
                {
                    li.AddCssClass(LiCurrentCssClass);
                }
                else
                {
                    if (!link.Active)
                    {
                        li.AddCssClass(LiNonActiveCssClass);
                    }
                    else
                    {
                        if(!string.IsNullOrWhiteSpace(LiOtherCssClass))
                        {
                            li.AddCssClass(LiOtherCssClass);
                        }
                    }
                }

                if(link.Text == PreviousPageText && !string.IsNullOrWhiteSpace(PreviousPageHtml))
                {
                    li.InnerHtml.AppendHtml(PreviousPageHtml);
                }
                else if(link.Text == NextPageText && !string.IsNullOrWhiteSpace(NextPageHtml))
                {
                    li.InnerHtml.AppendHtml(NextPageHtml);
                }
                else
                {  
                    if(!link.IsCurrent && link.Active)
                    {
                        var a = new TagBuilder("a");

                        if (link.Active && (link.Url.Length > 0))
                        {
                            a.MergeAttribute("href", link.Url);
                        }
                        else
                        {
                            a.MergeAttribute("href", "#");
                        }


                        if (link.Text == "«")
                        {
                            a.InnerHtml.AppendHtml("&laquo;");

                        }
                        else if (link.Text == "»")
                        {
                            a.InnerHtml.AppendHtml("&raquo;");
                        }
                        else
                        {
                            a.InnerHtml.Append(link.Text);
                        }

                        if (link.Title.Length > 0)
                        {
                            a.MergeAttribute("title", link.Title);
                        }

                        if (AjaxTarget.Length > 0)
                        {
                            a.MergeAttribute("data-ajax", "true");
                            a.MergeAttribute("data-ajax-mode", AjaxMode);
                            a.MergeAttribute("data-ajax-update", AjaxTarget);
                            if (AjaxSuccess.Length > 0)
                            {
                                a.MergeAttribute("data-ajax-success", AjaxSuccess);
                            }
                            if (AjaxFailure.Length > 0)
                            {
                                a.MergeAttribute("data-ajax-failure", AjaxFailure);
                            }
                            if (AjaxBegin.Length > 0)
                            {
                                a.MergeAttribute("data-ajax-begin", AjaxBegin);
                            }
                            if (AjaxComplete.Length > 0)
                            {
                                a.MergeAttribute("data-ajax-complete", AjaxComplete);
                            }
                            if (AjaxLoading.Length > 0)
                            {
                                a.MergeAttribute("data-ajax-loading", AjaxLoading);
                            }
                            if (AjaxLoadingDuration.Length > 0)
                            {
                                a.MergeAttribute("data-ajax-loading-duration", AjaxLoadingDuration);
                            }
                        }
                        li.InnerHtml.AppendHtml(a);
                    }
                    else
                    {
                        // current or not active
                        var span = new TagBuilder("span");
                        if (link.Text == "«")
                        {
                            span.InnerHtml.AppendHtml("&laquo;");

                        }
                        else if (link.Text == "»")
                        {
                            span.InnerHtml.AppendHtml("&raquo;");
                        }
                        else
                        {
                            span.InnerHtml.Append(link.Text);
                        }

                        li.InnerHtml.AppendHtml(span);
                    }
                             
                }
       
                output.Content.AppendHtml(li);
            }

            output.Attributes.Clear();
            output.Attributes.Add("class", UlCssClass);
            
        }
 public SiteListViewModel()
 {
     Sites = new List<ISiteInfo>();
     Paging = new PaginationSettings();
 }
 public ScopeListViewModel()
 {
     Scopes = new List<Scope>();
     Paging = new PaginationSettings();
 }
        /// <summary>
        /// the problem with paging is when you have too many pages
        /// to fit in the pager based on PaginationSettings.MaxPagerItems
        /// you need a strategy to leave out links for some pages
        /// while still being possible to navigate to any page
        /// this class implements one such strategy (implemented by  Martijn Boland)
        /// if you want to implement a different strategy you can plugin your own
        /// IBuildPaginationLinks implementation
        /// </summary>
        /// <param name="paginationSettings"></param>
        /// <param name="generateUrl"></param>
        /// <param name="firstPageText"></param>
        /// <param name="firstPageTitle"></param>
        /// <param name="previousPageText"></param>
        /// <param name="previousPageTitle"></param>
        /// <param name="nextPageText"></param>
        /// <param name="nextPageTitle"></param>
        /// <param name="lastPageText"></param>
        /// <param name="lastPageTitle"></param>
        /// <param name="spacerText"></param>
        /// <returns></returns>
        public List <PaginationLink> BuildPaginationLinks(
            PaginationSettings paginationSettings,
            Func <int, string> generateUrl,
            string firstPageText,
            string firstPageTitle,
            string previousPageText,
            string previousPageTitle,
            string nextPageText,
            string nextPageTitle,
            string lastPageText,
            string lastPageTitle,
            string spacerText = "..."
            )
        {
            List <PaginationLink> paginationLinks = new List <PaginationLink>();

            int totalPages = (int)Math.Ceiling(paginationSettings.TotalItems / (double)paginationSettings.ItemsPerPage);

            // First page
            if (paginationSettings.ShowFirstLast)
            {
                var isActive = paginationSettings.CurrentPage > 1;
                if (isActive || !paginationSettings.SuppressInActiveFirstLast)
                {
                    paginationLinks.Add(
                        new PaginationLink
                    {
                        Active     = isActive,
                        Text       = firstPageText,
                        Title      = firstPageTitle,
                        PageNumber = 1,
                        Url        = generateUrl(1)
                    });
                }
            }

            // Previous page
            if (paginationSettings.UseReverseIncrement)
            {
                var isActive = paginationSettings.CurrentPage < totalPages;

                //SuppressEmptyNextPrev
                if (isActive)
                {
                    paginationLinks.Add(
                        new PaginationLink
                    {
                        Active     = true,
                        PageNumber = paginationSettings.CurrentPage + 1,
                        Text       = previousPageText,
                        Title      = previousPageTitle,
                        Url        = generateUrl(paginationSettings.CurrentPage + 1)
                    });
                }
                else
                {
                    if (!paginationSettings.SuppressEmptyNextPrev)
                    {
                        paginationLinks.Add(
                            new PaginationLink
                        {
                            Active     = false,
                            Text       = previousPageText,
                            PageNumber = totalPages
                        });
                    }
                }
            }
            else
            {
                var isActive = paginationSettings.CurrentPage > 1;
                if (isActive)
                {
                    paginationLinks.Add(new PaginationLink
                    {
                        Active     = true,
                        Text       = previousPageText,
                        Title      = previousPageTitle,
                        PageNumber = paginationSettings.CurrentPage - 1,
                        Url        = generateUrl(paginationSettings.CurrentPage - 1)
                    });
                }
                else
                {
                    if (!paginationSettings.SuppressEmptyNextPrev)
                    {
                        paginationLinks.Add(new PaginationLink
                        {
                            Active     = false,
                            Text       = previousPageText,
                            PageNumber = 1,
                            Url        = generateUrl(1)
                        });
                    }
                }
            }



            if (paginationSettings.ShowNumbered)
            {
                var start = 1;
                var end   = totalPages;
                var nrOfPagesToDisplay = paginationSettings.MaxPagerItems;

                if (totalPages > nrOfPagesToDisplay)
                {
                    var middle = (int)Math.Ceiling(nrOfPagesToDisplay / 2d) - 1;
                    var below  = (paginationSettings.CurrentPage - middle);
                    var above  = (paginationSettings.CurrentPage + middle);

                    if (below < 2)
                    {
                        above = nrOfPagesToDisplay;
                        below = 1;
                    }
                    else if (above > (totalPages - 2))
                    {
                        above = totalPages;
                        below = (totalPages - nrOfPagesToDisplay + 1);
                    }

                    start = below;
                    end   = above;
                }

                if (start > 1)
                {
                    paginationLinks.Add(new PaginationLink
                    {
                        Active     = true,
                        PageNumber = 1,
                        IsCurrent  = (paginationSettings.CurrentPage == 1 ? true : false),
                        Text       = "1",
                        Url        = generateUrl(1)
                    });

                    if (start > 3)
                    {
                        paginationLinks.Add(new PaginationLink
                        {
                            Active     = true,
                            PageNumber = 2,
                            IsCurrent  = (paginationSettings.CurrentPage == 2 ? true : false),
                            Text       = "2",
                            Url        = generateUrl(2)
                        });
                    }

                    if (start > 2)
                    {
                        paginationLinks.Add(new PaginationLink
                        {
                            Active   = false,
                            Text     = spacerText,
                            IsSpacer = true
                        });
                    }
                }

                for (var i = start; i <= end; i++)
                {
                    if (i == paginationSettings.CurrentPage || (paginationSettings.CurrentPage <= 0 && i == 1))
                    {
                        paginationLinks.Add(new PaginationLink
                        {
                            Active     = true,
                            PageNumber = i,
                            IsCurrent  = (paginationSettings.CurrentPage == i ? true : false),
                            Text       = i.ToString(),
                            Url        = generateUrl(i)
                        });
                    }
                    else
                    {
                        paginationLinks.Add(new PaginationLink
                        {
                            Active     = true,
                            PageNumber = i,
                            Text       = i.ToString(),
                            IsCurrent  = (paginationSettings.CurrentPage == i ? true : false),
                            Url        = generateUrl(i)
                        });
                    }
                }

                if (end < totalPages)
                {
                    if (end < totalPages - 1)
                    {
                        paginationLinks.Add(new PaginationLink
                        {
                            Active   = false,
                            Text     = spacerText,
                            IsSpacer = true
                        });
                    }
                    if (totalPages - 2 > end)
                    {
                        paginationLinks.Add(new PaginationLink
                        {
                            Active     = true,
                            PageNumber = totalPages - 1,
                            Text       = (totalPages - 1).ToString(),
                            IsCurrent  = (paginationSettings.CurrentPage == (totalPages - 1) ? true : false),
                            Url        = generateUrl(totalPages - 1)
                        });
                    }

                    paginationLinks.Add(new PaginationLink
                    {
                        Active     = true,
                        PageNumber = totalPages,
                        Text       = totalPages.ToString(),
                        IsCurrent  = (paginationSettings.CurrentPage == totalPages ? true : false),
                        Url        = generateUrl(totalPages)
                    });
                }
            }



            // Next page
            if (paginationSettings.UseReverseIncrement)
            {
                //SuppressEmptyNextPrev
                var isActive = paginationSettings.CurrentPage > 1;

                if (isActive)
                {
                    paginationLinks.Add(
                        new PaginationLink
                    {
                        Active     = true,
                        Text       = nextPageText,
                        Title      = nextPageTitle,
                        PageNumber = paginationSettings.CurrentPage - 1,
                        Url        = generateUrl(paginationSettings.CurrentPage - 1)
                    });
                }
                else
                {
                    if (!paginationSettings.SuppressEmptyNextPrev)
                    {
                        paginationLinks.Add(
                            new PaginationLink
                        {
                            Active     = false,
                            Text       = nextPageText,
                            PageNumber = 1,
                            Url        = generateUrl(1)
                        });
                    }
                }

                //paginationLinks.Add(
                // paginationSettings.CurrentPage > 1 ? new PaginationLink
                // {
                //     Active = true,
                //     Text = nextPageText,
                //     Title = nextPageTitle,
                //     PageNumber = paginationSettings.CurrentPage + 1,
                //     Url = generateUrl(paginationSettings.CurrentPage + 1)
                // } : new PaginationLink
                // {
                //     Active = false,
                //     Text = nextPageText,
                //     PageNumber = 1,
                //     Url = generateUrl(1)
                // });
            }
            else
            {
                var isActive = paginationSettings.CurrentPage < totalPages;
                if (isActive)
                {
                    paginationLinks.Add(new PaginationLink
                    {
                        Active     = true,
                        PageNumber = paginationSettings.CurrentPage + 1,
                        Text       = nextPageText,
                        Title      = nextPageTitle,
                        Url        = generateUrl(paginationSettings.CurrentPage + 1)
                    });
                }
                else
                {
                    if (!paginationSettings.SuppressEmptyNextPrev)
                    {
                        paginationLinks.Add(new PaginationLink
                        {
                            Active     = false,
                            Text       = nextPageText,
                            PageNumber = totalPages
                        });
                    }
                }
            }


            // Last page
            if (paginationSettings.ShowFirstLast)
            {
                var isActive = paginationSettings.CurrentPage < totalPages;
                if (isActive || !paginationSettings.SuppressInActiveFirstLast)
                {
                    paginationLinks.Add(new PaginationLink
                    {
                        Active     = isActive,
                        Text       = lastPageText,
                        Title      = lastPageTitle,
                        PageNumber = totalPages,
                        Url        = generateUrl(totalPages)
                    });
                }
            }


            return(paginationLinks);
        }
示例#17
0
        public override void Process(TagHelperContext context, TagHelperOutput output)
        {
            if (PagingModel == null)
            {
                // allow for passing in the settings separately
                PagingModel               = new PaginationSettings();
                PagingModel.CurrentPage   = PageNumber;
                PagingModel.ItemsPerPage  = PageSize;
                PagingModel.TotalItems    = TotalItems;
                PagingModel.MaxPagerItems = MaxPagerItems;
            }
            int totalPages = (int)Math.Ceiling(PagingModel.TotalItems / (double)PagingModel.ItemsPerPage);

            // don't render if only 1 page
            if (totalPages <= 1)
            {
                output.SuppressOutput();
                return;
            }

            //change the bs-pager element into a ul
            output.TagName = "ul";

            string querySeparator;

            //prepare things needed by generatpageeurl function
            TagBuilder linkTemplate = GenerateLinkTemplate();

            baseHref       = linkTemplate.Attributes["href"];
            querySeparator = baseHref.Contains("?") ? "&" : "?";
            baseHref       = baseHref + querySeparator + PageNumberParam + "=";

            List <PaginationLink> links = linkBuilder.BuildPaginationLinks(
                PagingModel,
                GeneratePageUrl,
                FirstPageText,
                FirstPageTitle,
                PreviousPageText,
                PreviousPageTitle,
                NextPageText,
                NextPageTitle,
                LastPageText,
                LastPageTitle,
                "...");

            foreach (PaginationLink link in links)
            {
                var li = new TagBuilder("li");

                if (link.IsCurrent)
                {
                    li.AddCssClass(LiCurrentCssClass);
                }

                if (!link.Active)
                {
                    li.AddCssClass(LiNonActiveCssClass);
                }

                var a = new TagBuilder("a");

                if (link.Url.Length > 0)
                {
                    a.MergeAttribute("href", link.Url);
                }
                else
                {
                    a.MergeAttribute("href", "#");
                }


                if (link.Text == "«")
                {
                    //a.InnerHtml = "&laquo;";
                    a.InnerHtml.AppendEncoded("&laquo;");
                }
                else if (link.Text == "»")
                {
                    //a.InnerHtml = "&raquo;";
                    a.InnerHtml.AppendEncoded("&raquo;");
                }
                else
                {
                    a.InnerHtml.Append(link.Text);
                }

                if (link.Title.Length > 0)
                {
                    a.MergeAttribute("title", link.Title);
                }

                if (AjaxTarget.Length > 0)
                {
                    a.MergeAttribute("data-ajax", "true");
                    a.MergeAttribute("data-ajax-mode", AjaxMode);
                    a.MergeAttribute("data-ajax-update", AjaxTarget);
                }

                li.InnerHtml.Append(a);

                output.Content.Append(li);
            }

            output.Attributes.Clear();
            output.Attributes.Add("class", UlCssClass);
        }