public void Calculate(Pager pagerData, PagerSettings pagerSettings)
{
if (pagerData.CurrentPage < 0)
{
pagerData.CurrentPage = 1;
}
if (pagerData.CurrentPage > pagerData.TotalPages)
{
pagerData.CurrentPage = 1;
}
int currentPage = pagerData.CurrentPage;
pagerData.StartingPage = PagerCalculator.GetStartingPage(pagerData, pagerSettings);
pagerData.EndingPage = PagerCalculator.GetEndingPage(pagerData, pagerSettings);
if (currentPage + 1 <= pagerData.TotalPages)
{
pagerData.NextPage = currentPage + 1;
}
else
{
pagerData.NextPage = currentPage;
}
if (currentPage - 1 >= 1)
{
pagerData.PreviousPage = currentPage - 1;
return;
}
pagerData.PreviousPage = currentPage;
}
private static int GetEndingPage(Pager pagerData, PagerSettings settings)
{
if (pagerData.TotalPages <= settings.NumberPagesToDisplay)
{
return(pagerData.TotalPages);
}
int range = PagerCalculator.GetRange(pagerData.CurrentPage, settings.NumberPagesToDisplay);
int totalRanges = PagerCalculator.GetTotalRanges(pagerData.TotalPages, settings.NumberPagesToDisplay);
if (range == totalRanges)
{
return(pagerData.TotalPages);
}
return(range * settings.NumberPagesToDisplay);
}
private static int GetStartingPage(Pager pagerData, PagerSettings settings)
{
if (pagerData.CurrentPage <= settings.NumberPagesToDisplay)
{
return(1);
}
int num = PagerCalculator.GetRange(pagerData.CurrentPage, settings.NumberPagesToDisplay);
int totalRanges = PagerCalculator.GetTotalRanges(pagerData.TotalPages, settings.NumberPagesToDisplay);
if (num == totalRanges)
{
return(pagerData.TotalPages - settings.NumberPagesToDisplay + 1);
}
num--;
return(num * settings.NumberPagesToDisplay + 1);
}
private static int GetTotalRanges(int totalPages, int numberPagesToDisplay)
{
return(PagerCalculator.GetRange(totalPages, numberPagesToDisplay));
}
