protected override async Task BootstrapProcessAsync(TagHelperContext context, TagHelperOutput output)
{
output.TagName = "nav";
output.PreContent.AppendHtml(
Size == SimpleSize.Default
? "<ul class=\"pagination\">"
: $"<ul class=\"pagination pagination-{Size.GetDescription()}\">");
ChildDetectionMode = true;
await output.GetChildContentAsync(true);
ChildDetectionMode = false;
if (!DisableAutoActive && Items.TrueForAll(pI => !pI.Active))
{
var activeItem = Items.FirstOrDefault(ItemHasCurrentUrl);
if (activeItem != null)
{
activeItem.Active = true;
}
}
for (var i = 0; i < Items.Count; i++)
{
if (string.IsNullOrEmpty(Items[i].Content))
{
Items[i].Content = (i + 1).ToString();
}
}
if (Items.Any(pI => pI.Active))
{
if (PrevHref == null)
{
PrevHref = Items.TakeWhile(pI => !pI.Active).LastOrDefault(pI => !pI.Disabled)?.Href;
}
if (NextHref == null)
{
NextHref = Items.SkipWhile(pI => !pI.Active).Skip(1).FirstOrDefault(pI => !pI.Disabled)?.Href;
}
}
DisableNext = NextHref == null || DisableNext.HasValue && DisableNext.Value == false;
DisablePrev = PrevHref == null || DisablePrev.HasValue && DisablePrev.Value == false;
output.PreContent.AppendHtml(
PaginationItemTagHelper.RenderItemTag(
"<span aria-hidden=\"true\">«</span>",
PrevHref, DisablePrev.Value, false,
PrevText ?? Ressources.Previous));
output.PostContent.AppendHtml(
PaginationItemTagHelper.RenderItemTag(
"<span aria-hidden=\"true\">»</span>",
NextHref, DisableNext.Value, false,
NextText ?? Ressources.Next));
if (MaxDisplayedItems > 0 && Items.Count > MaxDisplayedItems)
{
if (Items.Any(pI => pI.Active))
{
MaxDisplayedItems--;
var itemsBeforeActive =
Items.TakeWhile(pI => !pI.Active).Reverse().ToList();
var itemsAfterActive = Items.SkipWhile(pI => !pI.Active).Skip(1).ToList();
var itemsCountBeforeActive = (int)Math.Floor((decimal)MaxDisplayedItems / 2);
var itemsCountAfterActive = (int)Math.Ceiling((decimal)MaxDisplayedItems / 2);
if (itemsCountAfterActive > itemsAfterActive.Count)
{
itemsCountBeforeActive += itemsCountAfterActive - itemsAfterActive.Count;
}
else if (itemsCountBeforeActive > itemsBeforeActive.Count)
{
itemsCountAfterActive += itemsCountBeforeActive - itemsBeforeActive.Count;
}
foreach (var item in itemsBeforeActive.Skip(itemsCountBeforeActive))
{
item.RenderOutput = false;
}
foreach (var item in itemsAfterActive.Skip(itemsCountAfterActive))
{
item.RenderOutput = false;
}
}
else
{
foreach (var item in Items.Skip(MaxDisplayedItems))
{
item.RenderOutput = false;
}
}
}
foreach (var item in Items.Where(pI => pI.RenderOutput))
{
output.Content.AppendHtml(PaginationItemTagHelper.RenderItemTag(item));
}
}
private bool ItemHasCurrentUrl(PaginationItemTagHelper item)
{
;
return(CurrentUrl.EndsWith("/" + item.Href.Trim('/'), StringComparison.CurrentCultureIgnoreCase) ||
CurrentUrl.Equals(item.Href, StringComparison.CurrentCultureIgnoreCase));
}
private bool ItemHasCurrentUrl(PaginationItemTagHelper item) {
;
return CurrentUrl.EndsWith("/" + item.Href.Trim('/'), StringComparison.CurrentCultureIgnoreCase) ||
CurrentUrl.Equals(item.Href, StringComparison.CurrentCultureIgnoreCase);
}
public static string RenderItemTag(PaginationItemTagHelper item) {
return RenderItemTag(item.Content, item.Href, item.Disabled, item.Active);
}
public static string RenderItemTag(PaginationItemTagHelper item)
{
return(RenderItemTag(item.Content, item.Href, item.Disabled, item.Active));
}