public ScrollableListView(ScrollableListViewModel <D, S, I> scrollableListViewModel) : base(ListViewCachingStrategy.RecycleElement)
{
this.scrollableListViewModel = scrollableListViewModel;
ItemsSource = scrollableListViewModel.Items;
HasUnevenRows = true;
ItemTemplate = Container.ServiceProvider.GetService(typeof(EntityTemplate <D>)) as EntityTemplate <D>;
if (ItemTemplate is null)
{
Debug.WriteLine("Template Not Found : Using default for object");
ItemTemplate = Container.ServiceProvider.GetService(typeof(EntityTemplate <object>)) as EntityTemplate <object>;
}
InfiniteScrollBehavior infiniteScrollBehavior = new InfiniteScrollBehavior();
Behaviors.Add(infiniteScrollBehavior);
Frame frame = new Frame()
{
BackgroundColor = Color.Transparent,
BorderColor = Color.Transparent,
HasShadow = false,
Content = new ActivityIndicator()
{
IsRunning = true
}
};
frame.SetBinding(IsVisibleProperty, new Binding(InfiniteScrollBehavior.IsLoadingMoreProperty.PropertyName, BindingMode.OneWay, source: infiniteScrollBehavior));
Footer = frame;
}
public void DecorateListView(ListView listView, IList <ToolbarItem> toolbarItems = null)
{
if (_listInited)
{
return;
}
_listInited = true;
listView.SetBinding(ListView.ItemsSourceProperty, new Binding(nameof(DataSource)));
listView.HasUnevenRows = true;
listView.IsPullToRefreshEnabled = true;
listView.SetBinding(ListView.IsRefreshingProperty, new Binding(nameof(IsRefreshing)));
listView.SetBinding(ListView.RefreshCommandProperty, new Binding(nameof(LoadDataCommand)));
var behavior = new InfiniteScrollBehavior();
behavior.SetBinding(InfiniteScrollBehavior.IsLoadingMoreProperty, new Binding(nameof(IsScrolling)));
listView.Behaviors.Add(behavior);
var activityIndicator = new ActivityIndicator()
{
VerticalOptions = LayoutOptions.End, HorizontalOptions = LayoutOptions.CenterAndExpand, HeightRequest = 70
};
activityIndicator.BindingContext = this;
activityIndicator.SetBinding(ActivityIndicator.IsVisibleProperty, new Binding(nameof(IsScrolling)));
activityIndicator.SetBinding(ActivityIndicator.IsRunningProperty, new Binding(nameof(IsScrolling)));
listView.Footer = activityIndicator;
if (toolbarItems != null)
{
List <string> items = new List <string>();
foreach (var kvp in sortFields)
{
items.Add($"{kvp.Key}{ASCENDING}");
items.Add($"{kvp.Key}{DESCENDING}");
}
var item = new ToolbarItem()
{
Icon = "ic_sort_by_alpha_white.png"
};
item.Clicked += async(object sender, EventArgs e) =>
{
var selected = await Acr.UserDialogs.UserDialogs.Instance.ActionSheetAsync("Sort", "Cancel", null, null, items.ToArray());
if (!string.IsNullOrEmpty(selected) && selected != "Cancel")
{
sortSelected(selected);
}
};
toolbarItems.Add(item);
}
}
public BsdListView(ListViewCachingStrategy cachingStrategy) : base(cachingStrategy)
{
this.ItemAppearing += OnItemAppearing;
this.ItemTapped += OnItemTapped;
this.IsPullToRefreshEnabled = true;
this.HasUnevenRows = true;
this.SelectionMode = ListViewSelectionMode.None;
this.SeparatorVisibility = SeparatorVisibility.None;
this.BackgroundColor = Color.FromHex("#eeeeee");
this.SetBinding(RefreshCommandProperty, new Binding("RefreshCommand"));
this.SetBinding(IsRefreshingProperty, new Binding("IsRefreshing"));
this.SetBinding(ItemsSourceProperty, new Binding("Data"));
InfiniteScrollBehavior behavior = new InfiniteScrollBehavior();
behavior.SetBinding(InfiniteScrollBehavior.IsLoadingMoreProperty, new Binding("IsBusy"));
this.Behaviors.Add(behavior);
}
protected override void OnAppearing()
{
base.OnAppearing();
if (!viewModel.ForUser && this.ToolbarItems.Count < 2)
{
if (viewModel.ForSearch)
{
var srch = new ToolbarItem()
{
Icon = "ic_search_white.png"
};
srch.Clicked += (object sender, EventArgs e) => viewModel.ToggleFilter();
this.ToolbarItems.Add(srch);
}
else
{
var toolbarItem = new ToolbarItem()
{
Icon = "ic_add_white.png"
};
toolbarItem.Clicked += addToolbarItem_Click;
this.ToolbarItems.Add(toolbarItem);
if (viewModel.IsNotGeneral)
{
toolbarItem = new ToolbarItem()
{
Icon = "ic_input_white.png"
};
toolbarItem.Clicked += Btn_Clicked;
this.ToolbarItems.Add(toolbarItem);
}
}
var sort = new ToolbarItem()
{
Icon = "ic_sort_by_alpha_white.png"
};
sort.Clicked += async(object sender, EventArgs e) => await viewModel.ShowSort();
this.ToolbarItems.Add(sort);
}
if (viewModel.ForSearch)
{
var behavior = new InfiniteScrollBehavior();
behavior.SetBinding(InfiniteScrollBehavior.IsLoadingMoreProperty, new Binding(nameof(viewModel.IsScrolling)));
EntriesList.Behaviors.Add(behavior);
var activityIndicator = new ActivityIndicator()
{
VerticalOptions = LayoutOptions.End, HorizontalOptions = LayoutOptions.CenterAndExpand, HeightRequest = 70
};
activityIndicator.BindingContext = this;
activityIndicator.SetBinding(ActivityIndicator.IsVisibleProperty, new Binding(nameof(viewModel.IsScrolling)));
activityIndicator.SetBinding(ActivityIndicator.IsRunningProperty, new Binding(nameof(viewModel.IsScrolling)));
EntriesList.Footer = activityIndicator;
}
if (viewModel.Entries.Count == 0)
{
viewModel.LoadEntriesCommand.Execute(null);
}
}
