/// <summary>
/// Gets the pages.
/// </summary>
/// <param name="param">The parameters required to create a view model.</param>
/// <param name="maxPages">The maximum pages.</param>
/// <param name="totalNumberOfPages">The total number of pages.</param>
/// <returns></returns>
protected virtual IEnumerable <OrderHistoryPageViewModel> GetPages(OrderHistoryPaginationParam param, int maxPages, int totalNumberOfPages)
{
var pages = new List <OrderHistoryPageViewModel>();
int endPage = 0;
int startPage = 0;
if (totalNumberOfPages < maxPages)
{
startPage = 1;
endPage = totalNumberOfPages;
}
else if (maxPages <= totalNumberOfPages)
{
int maxPagesSplit = (int)Math.Floor((double)maxPages / 2);
int potentialStartPage = param.CurrentPage - maxPagesSplit;
if (potentialStartPage < 1)
{
startPage = 1;
endPage = maxPages;
}
else
{
int potentialEndPage = param.CurrentPage + maxPagesSplit - (maxPages % 2 == 0 ? 1 : 0);
if (potentialEndPage > totalNumberOfPages)
{
startPage = totalNumberOfPages - maxPages + 1;
endPage = totalNumberOfPages;
}
else
{
startPage = potentialStartPage;
endPage = potentialEndPage;
}
}
}
else if (maxPages > totalNumberOfPages)
{
startPage = 1;
endPage = totalNumberOfPages;
}
for (var index = startPage; index <= endPage; index++)
{
var displayName = index.ToString(CultureInfo.InvariantCulture);
var searchPage = new OrderHistoryPageViewModel
{
DisplayName = displayName,
PageNumber = index,
IsCurrentPage = index == param.CurrentPage
};
pages.Add(searchPage);
}
return(pages);
}
/// <summary>
/// Gets the previous page.
/// </summary>
/// <param name="param">The parameters required to create a view model.</param>
/// <returns></returns>
protected virtual OrderHistoryPageViewModel GetPreviousPage(OrderHistoryPaginationParam param)
{
var previousPage = new OrderHistoryPageViewModel
{
DisplayName = LocalizationProvider
.GetLocalizedString(new GetLocalizedParam
{
Category = "List-Search",
Key = "B_Previous",
CultureInfo = param.CultureInfo
})
};
if (param.CurrentPage > 1)
{
previousPage.PageNumber = param.CurrentPage - 1;
}
else
{
previousPage.IsCurrentPage = true;
}
return(previousPage);
}
/// <summary>
/// Gets the next page.
/// </summary>
/// <param name="param">The parameters required to create a view model.</param>
/// <param name="totalNumberOfPages">The total number of pages.</param>
/// <returns></returns>
protected virtual OrderHistoryPageViewModel GetNextPage(OrderHistoryPaginationParam param, int totalNumberOfPages)
{
var nextPage = new OrderHistoryPageViewModel
{
DisplayName = LocalizationProvider
.GetLocalizedString(new GetLocalizedParam
{
Category = "List-Search",
Key = "B_Next",
CultureInfo = param.CultureInfo
})
};
if (param.CurrentPage < totalNumberOfPages)
{
nextPage.PageNumber = param.CurrentPage + 1;
}
else
{
nextPage.IsCurrentPage = true;
}
return(nextPage);
}