public async Task <IHtmlContent> Pager_Links(Shape shape, DisplayContext displayContext, IShapeFactory shapeFactory, IHtmlHelper Html,
string PagerId,
int Page,
int PageSize,
double TotalItemCount,
int?Quantity,
object FirstText,
object PreviousText,
object NextText,
object LastText,
object GapText,
bool ShowNext)
{
var noFollow = shape.Attributes.ContainsKey("rel") && shape.Attributes["rel"] == "no-follow";
var currentPage = Page;
if (currentPage < 1)
{
currentPage = 1;
}
var pageSize = PageSize;
var numberOfPagesToShow = Quantity ?? 0;
if (Quantity == null || Quantity < 0)
{
numberOfPagesToShow = 7;
}
var totalPageCount = pageSize > 0 ? (int)Math.Ceiling(TotalItemCount / pageSize) : 1;
// return shape early if pager is not needed.
if (totalPageCount < 2)
{
shape.Metadata.Type = "List";
return(await displayContext.DisplayHelper.ShapeExecuteAsync(shape));
}
var firstText = FirstText ?? S["<<"];
var previousText = PreviousText ?? S["<"];
var nextText = NextText ?? S[">"];
var lastText = LastText ?? S[">>"];
var gapText = GapText ?? S["..."];
var httpContextAccessor = displayContext.ServiceProvider.GetService <IHttpContextAccessor>();
var httpContext = httpContextAccessor.HttpContext;
var routeData = new RouteValueDictionary(Html.ViewContext.RouteData.Values);
if (httpContext != null)
{
var queryString = httpContext.Request.Query;
if (queryString != null)
{
foreach (var key in from string key in queryString.Keys where key != null && !routeData.ContainsKey(key) let value = queryString[key] select key)
{
routeData[key] = queryString[key];
}
}
}
// specific cross-requests route data can be passed to the shape directly (e.g., OrchardCore.Users)
var shapeRouteData = shape.GetProperty <RouteData>("RouteData");
if (shapeRouteData != null)
{
foreach (var rd in shapeRouteData.Values)
{
routeData[rd.Key] = rd.Value;
}
}
var firstPage = Math.Max(1, Page - (numberOfPagesToShow / 2));
var lastPage = Math.Min(totalPageCount, Page + (numberOfPagesToShow / 2));
var pageKey = String.IsNullOrEmpty(PagerId) ? "page" : PagerId;
shape.Classes.Add("pager");
shape.Metadata.Alternates.Clear();
shape.Metadata.Type = "List";
// first and previous pages
if ((Page > 1) && (routeData.ContainsKey(pageKey)))
{
routeData.Remove(pageKey); // to keep from having "page=1" in the query string
}
// first
var firstItem = await shapeFactory.CreateAsync("Pager_First", Arguments.From(new
{
Value = firstText,
RouteValues = new RouteValueDictionary(routeData),
Pager = shape,
Disabled = Page < 2
}));
if (noFollow)
{
firstItem.Attributes["rel"] = "no-follow";
}
await shape.AddAsync(firstItem);
// previous
if ((Page > 1) && (currentPage > 2))
{ // also to keep from having "page=1" in the query string
routeData[pageKey] = currentPage - 1;
}
var previousItem = await shapeFactory.CreateAsync("Pager_Previous", Arguments.From(new
{
Value = previousText,
RouteValues = new RouteValueDictionary(routeData),
Pager = shape,
Disabled = Page < 2
}));
if (noFollow)
{
previousItem.Attributes["rel"] = "no-follow";
}
await shape.AddAsync(previousItem);
// gap at the beginning of the pager
if (firstPage > 1 && numberOfPagesToShow > 0)
{
await shape.AddAsync(await shapeFactory.CreateAsync("Pager_Gap", Arguments.From(new
{
Value = gapText,
Pager = shape
})));
}
// page numbers
if (numberOfPagesToShow > 0 && lastPage > 1)
{
for (var p = firstPage; p <= lastPage; p++)
{
if (p == currentPage)
{
routeData[pageKey] = currentPage;
var currentPageItem = await shapeFactory.CreateAsync("Pager_CurrentPage", Arguments.From(new
{
Value = p,
RouteValues = new RouteValueDictionary(routeData),
Pager = shape
}));
if (noFollow)
{
currentPageItem.Attributes["rel"] = "no-follow";
}
await shape.AddAsync(currentPageItem);
}
else
{
if (p == 1)
{
routeData.Remove(pageKey);
}
else
{
routeData[pageKey] = p;
}
var pagerItem = await shapeFactory.CreateAsync("Pager_Link", Arguments.From(new
{
Value = p,
RouteValues = new RouteValueDictionary(routeData),
Pager = shape
}));
if (p > currentPage)
{
pagerItem.Attributes["rel"] = noFollow ? "no-follow" : "next";
}
else if (p < currentPage)
{
pagerItem.Attributes["rel"] = noFollow ? "no-follow" : "prev";
}
await shape.AddAsync(pagerItem);
}
}
}
// gap at the end of the pager
if (lastPage < totalPageCount && numberOfPagesToShow > 0)
{
await shape.AddAsync(await shapeFactory.CreateAsync("Pager_Gap", Arguments.From(new
{
Value = gapText,
Pager = shape
})));
}
// Next
routeData[pageKey] = Page + 1;
var pagerNextItem = await shapeFactory.CreateAsync("Pager_Next", Arguments.From(new
{
Value = nextText,
RouteValues = new RouteValueDictionary(routeData),
Pager = shape,
Disabled = Page >= totalPageCount && !ShowNext
}));
if (noFollow)
{
pagerNextItem.Attributes["rel"] = "no-follow";
}
await shape.AddAsync(pagerNextItem);
// Last
routeData[pageKey] = totalPageCount;
var pagerLastItem = await shapeFactory.CreateAsync("Pager_Last", Arguments.From(new
{
Value = lastText,
RouteValues = new RouteValueDictionary(routeData),
Pager = shape,
Disabled = Page >= totalPageCount
}));
if (noFollow)
{
pagerLastItem.Attributes["rel"] = "no-follow";
}
await shape.AddAsync(pagerLastItem);
return(await displayContext.DisplayHelper.ShapeExecuteAsync(shape));
}
public async Task <IHtmlContent> PagerSlim(Shape shape, DisplayContext displayContext, IShapeFactory shapeFactory, IHtmlHelper Html,
object PreviousText,
object NextText,
string PreviousClass,
string NextClass,
Dictionary <string, string> UrlParams)
{
var noFollow = shape.Attributes.ContainsKey("rel") && shape.Attributes["rel"] == "no-follow";
var previousText = PreviousText ?? S["<"];
var nextText = NextText ?? S[">"];
shape.Classes.Add("pager");
shape.Metadata.Alternates.Clear();
shape.Metadata.Type = "List";
var routeData = new RouteValueDictionary(Html.ViewContext.RouteData.Values);
// Allows to pass custom url params to PagerSlim
if (UrlParams != null)
{
foreach (var item in UrlParams)
{
routeData.Add(item.Key, item.Value);
}
}
if (shape.TryGetProperty("Before", out string before))
{
var beforeRouteData = new RouteValueDictionary(routeData)
{
["before"] = before
};
var previousItem = await shapeFactory.CreateAsync("Pager_Previous", Arguments.From(new
{
Value = previousText,
RouteValues = beforeRouteData,
Pager = shape
}));
if (noFollow)
{
previousItem.Attributes["rel"] = "no-follow";
}
await shape.AddAsync(previousItem);
shape.Properties["FirstClass"] = PreviousClass;
}
if (shape.TryGetProperty("After", out string after))
{
var afterRouteData = new RouteValueDictionary(routeData)
{
["after"] = after
};
var nextItem = await shapeFactory.CreateAsync("Pager_Next", Arguments.From(new
{
Value = nextText,
RouteValues = afterRouteData,
Pager = shape
}));
if (noFollow)
{
nextItem.Attributes["rel"] = "no-follow";
}
await shape.AddAsync(nextItem);
shape.Properties["LastClass"] = NextClass;
}
return(await displayContext.DisplayHelper.ShapeExecuteAsync(shape));
}
public async Task <IHtmlContent> Pager_Links(Shape shape, DisplayContext displayContext, IShapeFactory shapeFactory, IHtmlHelper Html,
string PagerId,
int Page,
int PageSize,
double TotalItemCount,
int?Quantity,
object FirstText,
object PreviousText,
object NextText,
object LastText,
object GapText,
bool ShowNext,
Dictionary <string, string> UrlParams)
{
var noFollow = shape.Attributes.ContainsKey("rel") && shape.Attributes["rel"] == "no-follow";
var currentPage = Page;
if (currentPage < 1)
{
currentPage = 1;
}
var pageSize = PageSize;
var numberOfPagesToShow = Quantity ?? 0;
if (Quantity == null || Quantity < 0)
{
numberOfPagesToShow = 7;
}
var totalPageCount = pageSize > 0 ? (int)Math.Ceiling(TotalItemCount / pageSize) : 1;
// return shape early if pager is not needed.
if (totalPageCount < 2)
{
shape.Metadata.Type = "List";
return(await displayContext.DisplayHelper.ShapeExecuteAsync(shape));
}
var firstText = FirstText ?? S["<<"];
var previousText = PreviousText ?? S["<"];
var nextText = NextText ?? S[">"];
var lastText = LastText ?? S[">>"];
var gapText = GapText ?? S["..."];
var routeData = GetRouteData(shape, displayContext, Html);
SetCustomUrlParams(UrlParams, routeData);
var firstPage = Math.Max(1, Page - (numberOfPagesToShow / 2));
var lastPage = Math.Min(totalPageCount, Page + (numberOfPagesToShow / 2));
var pageKey = String.IsNullOrEmpty(PagerId) ? "pagenum" : PagerId;
shape.Classes.Add("pager");
shape.Metadata.Alternates.Clear();
shape.Metadata.Type = "List";
// first and previous pages
if ((Page > 1) && (routeData.ContainsKey(pageKey)))
{
routeData.Remove(pageKey); // to keep from having "pagenum=1" in the query string
}
// first
var firstItem = await shapeFactory.CreateAsync("Pager_First", Arguments.From(new
{
Value = firstText,
RouteValues = new RouteValueDictionary(routeData),
Pager = shape,
Disabled = Page < 2
}));
if (noFollow)
{
firstItem.Attributes["rel"] = "no-follow";
}
await shape.AddAsync(firstItem);
// previous
if ((Page > 1) && (currentPage > 2))
{ // also to keep from having "pagenum=1" in the query string
routeData[pageKey] = currentPage - 1;
}
var previousItem = await shapeFactory.CreateAsync("Pager_Previous", Arguments.From(new
{
Value = previousText,
RouteValues = new RouteValueDictionary(routeData),
Pager = shape,
Disabled = Page < 2
}));
if (noFollow)
{
previousItem.Attributes["rel"] = "no-follow";
}
await shape.AddAsync(previousItem);
// gap at the beginning of the pager
if (firstPage > 1 && numberOfPagesToShow > 0)
{
await shape.AddAsync(await shapeFactory.CreateAsync("Pager_Gap", Arguments.From(new
{
Value = gapText,
Pager = shape
})));
}
// page numbers
if (numberOfPagesToShow > 0 && lastPage > 1)
{
for (var p = firstPage; p <= lastPage; p++)
{
if (p == 1)
{
// to keep from having "pagenum=1" in the query string
routeData.Remove(pageKey);
}
else
{
routeData[pageKey] = p;
}
if (p == currentPage)
{
var currentPageItem = await shapeFactory.CreateAsync("Pager_CurrentPage", Arguments.From(new
{
Value = p,
RouteValues = new RouteValueDictionary(routeData),
Pager = shape
}));
if (noFollow)
{
currentPageItem.Attributes["rel"] = "no-follow";
}
await shape.AddAsync(currentPageItem);
}
else
{
var pagerItem = await shapeFactory.CreateAsync("Pager_Link", Arguments.From(new
{
Value = p,
RouteValues = new RouteValueDictionary(routeData),
Pager = shape
}));
if (p > currentPage)
{
pagerItem.Attributes["rel"] = noFollow ? "no-follow" : "next";
}
else if (p < currentPage)
{
pagerItem.Attributes["rel"] = noFollow ? "no-follow" : "prev";
}
await shape.AddAsync(pagerItem);
}
}
}
// gap at the end of the pager
if (lastPage < totalPageCount && numberOfPagesToShow > 0)
{
await shape.AddAsync(await shapeFactory.CreateAsync("Pager_Gap", Arguments.From(new
{
Value = gapText,
Pager = shape
})));
}
// Next
routeData[pageKey] = Page + 1;
var pagerNextItem = await shapeFactory.CreateAsync("Pager_Next", Arguments.From(new
{
Value = nextText,
RouteValues = new RouteValueDictionary(routeData),
Pager = shape,
Disabled = Page >= totalPageCount && !ShowNext
}));
if (noFollow)
{
pagerNextItem.Attributes["rel"] = "no-follow";
}
await shape.AddAsync(pagerNextItem);
// Last
routeData[pageKey] = totalPageCount;
var pagerLastItem = await shapeFactory.CreateAsync("Pager_Last", Arguments.From(new
{
Value = lastText,
RouteValues = new RouteValueDictionary(routeData),
Pager = shape,
Disabled = Page >= totalPageCount
}));
if (noFollow)
{
pagerLastItem.Attributes["rel"] = "no-follow";
}
await shape.AddAsync(pagerLastItem);
return(await displayContext.DisplayHelper.ShapeExecuteAsync(shape));
}
