public string CreatePager(int?currentPage, int itemCount, int pageSize, GeneratePageLinkDelegate urlGenerator)
{
return(this.CreatePager(currentPage, itemCount, pageSize, x => x.ToString(), urlGenerator));
}
public string CreatePager(int?currentPage, int itemCount, int pageSize, GenerateItemDelegate itemGenerator, GeneratePageLinkDelegate urlGenerator)
{
int pageCount = PageCount(itemCount, pageSize);
int?page = currentPage;
if (page.HasValue)
{
page = ClampPage(page, pageCount);
}
StringBuilder result = new StringBuilder();
foreach (PagerElement element in this.Elements)
{
result.Append(element.Build(currentPage, pageCount, itemCount, itemGenerator, urlGenerator));
}
return(result.ToString());
}
public override string Build(int?currentPage, int pageCount, int itemCount, GenerateItemDelegate itemGenerator, GeneratePageLinkDelegate urlGenerator)
{
List <NumberRange> ranges = new List <NumberRange>();
if (firstNumber > 0)
{
int min = Pager.ClampPage(1, pageCount);
int max = Pager.ClampPage(firstNumber - 1, pageCount);
ranges.Add(new NumberRange(min, max, "", max == pageCount ? "" : this.firstSeperator));
}
if (lastNumber > 0)
{
int min = Pager.ClampPage(pageCount - (lastNumber - 1), pageCount);
int max = Pager.ClampPage(pageCount, pageCount);
ranges.Add(new NumberRange(min, max, min == 1 ? "" : this.lastSeperator, ""));
}
int effectiveCurrent = 1;
if (currentPage.HasValue)
{
effectiveCurrent = currentPage.Value;
}
{
int min = Pager.ClampPage(effectiveCurrent - adjacentMin, pageCount);
int max = Pager.ClampPage(effectiveCurrent + adjacentMin, pageCount);
int addMax = adjacentMin - (effectiveCurrent - min);
int subMin = adjacentMin - (max - effectiveCurrent);
if (addMax > 0)
{
max += addMax;
max = Math.Min(effectiveCurrent + adjacentMax, max);
}
if (subMin > 0)
{
min -= subMin;
min = Math.Max(effectiveCurrent - adjacentMax, min);
}
max = Pager.ClampPage(max, pageCount);
min = Pager.ClampPage(min, pageCount);
ranges.Add(new NumberRange(min, max, "", ""));
}
while (true)
{
var match = from a in ranges
from b in ranges
where a != b
where a.Min <= b.Min
where (!this.collapseAdjacentElements && (a.Min < (b.Max + 1) && b.Min < (a.Max + 1))) || (this.collapseAdjacentElements && (a.Min <= (b.Max + 1) && b.Min <= (a.Max + 1)))
select new
{
a,
b
};
if (!match.Any())
{
break;
}
var firstMatch = match.First();
ranges.Remove(firstMatch.a);
ranges.Remove(firstMatch.b);
int min;
int max;
string seperatorBefore;
string seperatorAfter;
if (firstMatch.a.Min < firstMatch.b.Min)
{
min = firstMatch.a.Min;
seperatorBefore = firstMatch.a.SeperatorBefore;
}
else if (firstMatch.b.Min < firstMatch.a.Min)
{
min = firstMatch.b.Min;
seperatorBefore = firstMatch.b.SeperatorBefore;
}
else
{
min = firstMatch.a.Min; // == firstMatch.b.Min
if (string.IsNullOrEmpty(firstMatch.b.SeperatorBefore))
{
seperatorBefore = firstMatch.a.SeperatorBefore;
}
else
{
seperatorBefore = firstMatch.b.SeperatorBefore;
}
}
if (firstMatch.a.Max > firstMatch.b.Max)
{
max = firstMatch.a.Max;
seperatorAfter = firstMatch.a.SeperatorAfter;
}
else if (firstMatch.b.Max > firstMatch.a.Max)
{
max = firstMatch.b.Max;
seperatorAfter = firstMatch.b.SeperatorAfter;
}
else
{
max = firstMatch.a.Max;
if (string.IsNullOrEmpty(firstMatch.b.SeperatorAfter))
{
seperatorAfter = firstMatch.a.SeperatorAfter;
}
else
{
seperatorAfter = firstMatch.b.SeperatorAfter;
}
}
ranges.Add(new NumberRange(min, max, seperatorBefore, seperatorAfter));
}
StringBuilder output = new StringBuilder();
var finalRanges = from a in ranges
orderby a.Min
select a;
bool seperated = true;
foreach (var range in finalRanges)
{
if (!string.IsNullOrEmpty(range.SeperatorBefore))
{
if (!this.collapseSeperators && !seperated)
{
output.Append(this.seperatorFormat);
}
output.Append(range.SeperatorBefore);
if (!this.collapseSeperators)
{
output.Append(this.seperatorFormat);
seperated = true;
}
else
{
seperated = true;
}
}
else
{
if (!seperated)
{
output.Append(this.seperatorFormat);
seperated = true;
}
}
for (int i = range.Min; i <= range.Max; i++)
{
if (!seperated)
{
output.Append(this.seperatorFormat);
seperated = true;
}
string item = itemGenerator(i);
string url = urlGenerator(i);
if (currentPage.HasValue && i == currentPage.Value)
{
output.Append(string.Format(this.currentFormat, item, url));
seperated = false;
}
else
{
output.Append(string.Format(this.otherFormat, item, url));
seperated = false;
}
}
if (!string.IsNullOrEmpty(range.SeperatorAfter))
{
if (!this.collapseSeperators && !seperated)
{
output.Append(this.seperatorFormat);
seperated = true;
}
output.Append(range.SeperatorAfter);
if (!this.collapseSeperators)
{
output.Append(this.seperatorFormat);
seperated = true;
}
else
{
seperated = true;
}
}
}
return(output.ToString());
}
public override string Build(int?currentPage, int pageCount, int itemCount, GenerateItemDelegate itemGenerator, GeneratePageLinkDelegate urlGenerator)
{
string pageNumber = "?";
if (currentPage.HasValue)
{
pageNumber = currentPage.Value.ToString();
}
return(string.Format(this.format, pageNumber, pageCount));
}
public override string Build(int?currentPage, int pageCount, int itemCount, GenerateItemDelegate itemGenerator, GeneratePageLinkDelegate urlGenerator)
{
return(this.text);
}
public override string Build(int?currentPage, int pageCount, int itemCount, GenerateItemDelegate itemGenerator, GeneratePageLinkDelegate urlGenerator)
{
if (currentPage.HasValue)
{
if (currentPage.Value != pageCount || !hideOnLast)
{
string link = urlGenerator(pageCount);
return(string.Format(this.format, link));
}
}
return("");
}
public abstract string Build(int?currentPage, int pageCount, int itemCount, GenerateItemDelegate itemGenerator, GeneratePageLinkDelegate urlGenerator);