public FooterHolder(View root, LogTimeEntriesViewModel viewModel) : base(root)
{
retryLayout = ItemView.FindViewById <RelativeLayout> (Resource.Id.RetryLayout);
progressBar = ItemView.FindViewById <ProgressBar> (Resource.Id.ProgressBar);
retryButton = ItemView.FindViewById <Button> (Resource.Id.RetryButton);
retryButton.Click += async(sender, e) => await viewModel.LoadMore();
}
public FooterHolder(View root, LogTimeEntriesViewModel viewModel) : base(root)
{
Vm = viewModel;
retryLayout = ItemView.FindViewById <RelativeLayout> (Resource.Id.RetryLayout);
retryButton = ItemView.FindViewById <Button> (Resource.Id.RetryButton);
progressBar = ItemView.FindViewById <ProgressBar> (Resource.Id.ProgressBar);
IsRecyclable = false;
retryButton.Click += async(sender, e) => await Vm.LoadMore();
hasMoreBinding = this.SetBinding(() => Vm.HasMoreItems).WhenSourceChanges(SetFooterState);
hasErrorBinding = this.SetBinding(() => Vm.HasLoadErrors).WhenSourceChanges(SetFooterState);
SetFooterState();
}
public async override void Scrolled(UIScrollView scrollView)
{
var currentOffset = scrollView.ContentOffset.Y;
var maximumOffset = scrollView.ContentSize.Height - scrollView.Frame.Height;
if (isLoading)
{
isLoading &= maximumOffset - currentOffset <= 200.0;
}
if (!isLoading && maximumOffset - currentOffset <= 200.0)
{
isLoading = true;
await VM.LoadMore();
}
}
public async override void ViewDidLoad()
{
base.ViewDidLoad();
NavigationItem.LeftBarButtonItem = new UIBarButtonItem(
Image.IconNav.ImageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal),
UIBarButtonItemStyle.Plain, OnNavigationButtonTouched);
EdgesForExtendedLayout = UIRectEdge.None;
TableView.RegisterClassForCellReuse(typeof(TimeEntryCell), EntryCellId);
TableView.RegisterClassForHeaderFooterViewReuse(typeof(SectionHeaderView), SectionHeaderId);
TableView.SetEditing(false, true);
// Create view model
ViewModel = LogTimeEntriesViewModel.Init();
var headerView = new TableViewRefreshView();
RefreshControl = headerView;
headerView.AdaptToTableView(TableView);
headerView.ValueChanged += (sender, e) => ViewModel.TriggerFullSync();
// Bindings
syncBinding = this.SetBinding(() => ViewModel.IsAppSyncing).WhenSourceChanges(() => {
if (!ViewModel.IsAppSyncing)
{
headerView.EndRefreshing();
}
});
hasMoreBinding = this.SetBinding(() => ViewModel.HasMoreItems).WhenSourceChanges(SetFooterState);
hasErrorBinding = this.SetBinding(() => ViewModel.HasLoadErrors).WhenSourceChanges(SetFooterState);
hasItemsBinding = this.SetBinding(() => ViewModel.HasItems).WhenSourceChanges(SetCollectionState);
loadMoreBinding = this.SetBinding(() => ViewModel.HasItems).WhenSourceChanges(LoadMoreIfNeeded);
collectionBinding = this.SetBinding(() => ViewModel.Collection).WhenSourceChanges(() => {
TableView.Source = new TimeEntriesSource(this, ViewModel);
});
isRunningBinding = this.SetBinding(() => ViewModel.IsTimeEntryRunning).WhenSourceChanges(SetStartStopButtonState);
durationBinding = this.SetBinding(() => ViewModel.Duration).WhenSourceChanges(() => durationButton.SetTitle(ViewModel.Duration, UIControlState.Normal));
// TODO: Review this line.
// Get data to fill the list. For the moment,
// until a screenloader is added to the screen
// is better to load the items after create
// the viewModel and show the loader from RecyclerView
await ViewModel.LoadMore();
}
public async override void OnScrolled(RecyclerView recyclerView, int dx, int dy)
{
base.OnScrolled(recyclerView, dx, dy);
visibleItemCount = recyclerView.ChildCount;
totalItemCount = linearLayoutManager.ItemCount;
firstVisibleItem = linearLayoutManager.FindFirstVisibleItemPosition();
if (loading)
{
if (totalItemCount > previousTotal)
{
loading = false;
previousTotal = totalItemCount;
}
}
if (!loading && (totalItemCount - visibleItemCount) <= (firstVisibleItem + visibleThreshold))
{
loading = true;
// Request more entries.
await viewModel.LoadMore();
}
}