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WIP on scrolling

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This commit is contained in:
Jamie Rees 2019-04-16 15:49:44 +01:00
commit 227ec0a6f8
6 changed files with 155 additions and 34 deletions
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75
src/Ombi.Helpers/PagnationHelper.cs Normal file
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using System;
using System.Collections.Generic;
using System.Text;
namespace Ombi.Helpers
{
public static class PaginationHelper
{
public static List<PagesToLoad> GetNextPages(int currentlyLoaded, int toLoad, int maxItemsPerPage)
{
var pagesToLoad = new List<PagesToLoad>();
if (currentlyLoaded == maxItemsPerPage)
{
currentlyLoaded++;
}
var a = currentlyLoaded / maxItemsPerPage;
//var currentPage = Convert.ToInt32(Math.Round((decimal)((decimal)currentlyLoaded / (decimal)maxItemsPerPage), 2, MidpointRounding.AwayFromZero));
var currentPage = Convert.ToInt32(Math.Ceiling((decimal)((decimal)currentlyLoaded / (decimal)maxItemsPerPage)));
if (currentlyLoaded < maxItemsPerPage)
{
currentPage = 1;
}
var toBeLoaded = (currentlyLoaded + toLoad)+1;
//var toBeLoadedPage = Convert.ToInt32(Math.Round((decimal)((decimal)toBeLoaded / (decimal)maxItemsPerPage), 2, MidpointRounding.AwayFromZero));
var toBeLoadedPage = Convert.ToInt32(Math.Ceiling((decimal)((decimal)toBeLoaded / (decimal)maxItemsPerPage)));
if (currentlyLoaded == 0)
{
// If we have not loaded any yet, then we should only load
// the first page
currentPage = toBeLoadedPage;
}
var extraPageNeeded = (toBeLoadedPage != currentPage);
if(extraPageNeeded)
{
// Add the first page
pagesToLoad.Add(new PagesToLoad
{
Page = currentPage,
Skip = currentlyLoaded
});
// Add extra page
pagesToLoad.Add(new PagesToLoad
{
Page = toBeLoadedPage,
Skip = (currentlyLoaded + toLoad) - maxItemsPerPage,
Take = toLoad
});
}
else
{
pagesToLoad.Add(new PagesToLoad
{
Page = currentPage,
Skip = currentlyLoaded,
Take = toLoad
});
}
return pagesToLoad;
}
}
public class PagesToLoad
{
public int Page { get; set; }
public int Take { get; set; }
public int Skip { get; set; }
}
}