public void LoadPage(int pageNumber, bool excludeReadItems)
{
try
{
this.IsLoading = true;
UpdateReadItems(excludeReadItems);
if (PagedItemViewModels.Count >= pageNumber * AppConfig.ITEM_COUNT_PER_FEED)
{
return;
}
if (pageNumber == 1)
{
PagedItemViewModels.Clear();
}
int skip = (pageNumber - 1) * AppConfig.ITEM_COUNT_PER_FEED;
var itemPage = excludeReadItems ?
AllItemViewModels.Where(i => !i.Read).Skip(skip).Take(AppConfig.ITEM_COUNT_PER_FEED).ToList()
: AllItemViewModels.Skip(skip).Take(AppConfig.ITEM_COUNT_PER_FEED).ToList();
itemPage.ForEach(i => PagedItemViewModels.Add(i));
}
catch (Exception ex)
{
throw ex;
}
finally
{
this.IsLoading = false;
}
}
public void Initialize()
{
AllItemViewModels.Clear();
var savedResult = _feedManager.GetStoredItems();
if (!savedResult.HasError)
{
savedResult.Target.ForEach(i => AllItemViewModels.Add(new ItemViewModel(i)));
}
}
public void UpdateReadItems(bool excludeReadItems)
{
if (AllItemViewModels == null || AllItemViewModels.Count == 0)
{
return;
}
AllItemViewModels.ForEach(r =>
{
var itemViewModel = PagedItemViewModels.FirstOrDefault(i => i.Id.Equals(r.Id));
if (itemViewModel != null)
{
itemViewModel.Read = r.Read;
if (excludeReadItems && itemViewModel.Read)
{
PagedItemViewModels.Remove(itemViewModel);
}
}
});
}