public AnimationsDemoPage()
{
InitializeComponent();
_groups = new ResetableCollection <RecipeGroup>(Enumerable.Range(0, 10).Select(j =>
new RecipeGroup(
Enumerable.Range(0, _rnd.Next(5, 16)).Select(k => CreateRecipe(j, k)))
{
Name = "Group #" + j
}));
_dataSource = new DelegatingItemsSource(_groups);
Func <DelegatingItemsSource, int, string> KeyFromIndexFunc = (ds, index) => ds.GetAt(index).ToString();
repeater.ItemsSource = _dataSource;
_dataSource.KeyFromIndexFunc = KeyFromIndexFunc;
repeater.Layout = new StackLayout();
var generator = new AnimationElementFactory(
(DataTemplate)Resources["RecipeGroupTemplate"],
(DataTemplate)Resources["RecipeTemplate"],
(ElementAnimator)Resources["SharedAnimator"],
KeyFromIndexFunc);
#if BUILD_WINDOWS
repeater.ItemTemplate = (Windows.UI.Xaml.IElementFactory)generator;
#else
repeater.ItemTemplate = generator;
#endif
goBack.Click += delegate { Frame.GoBack(); };
commands.KeyDown += (s, e) =>
{
if (e.Key == Windows.System.VirtualKey.Enter)
{
e.Handled = true;
ProcessCommands(commands.Text.ToLowerInvariant());
}
};
stackLayout.Checked += delegate { generator.IsInnerLayoutGrid = false; };
gridLayout.Checked += delegate { generator.IsInnerLayoutGrid = true; };
withUniqueId.Checked += delegate { generator.UpdateInnerLayouts(); };
withoutUniqueId.Checked += delegate { generator.UpdateInnerLayouts(); };
animationSlowdown.ValueChanged += delegate
{
//ElementAnimator.AnimationSlowdownFactor = animationSlowdown.Value;
};
}
protected override UIElement GetElementCore(ElementFactoryGetArgs args)
#endif
{
var key = (args.Data is RecipeGroup) ? "Group" : "Recipe";
var element = (FrameworkElement)_recyclePool.TryGetElement(key, args.Parent);
if (element == null)
{
if (args.Data is RecipeGroup)
{
element = (FrameworkElement)_groupTemplate.LoadContent();
_innerRepeaters.Add((ItemsRepeater)element.FindName("groupLayout"));
}
else
{
element = (FrameworkElement)_recipeTemplate.LoadContent();
}
}
element.Tag = key;
if (args.Data is RecipeGroup)
{
var group = (RecipeGroup)args.Data;
var groupName = (TextBlock)element.FindName("groupName");
var repeater = (ItemsRepeater)element.FindName("groupLayout");
groupName.Text = group.Name;
var dataSource = new DelegatingItemsSource(group);
dataSource.KeyFromIndexFunc = _KeyFromIndexFunc;
repeater.ItemsSource = dataSource;
repeater.Layout = IsInnerLayoutGrid ? (VirtualizingLayout) new UniformGridLayout()
{
MinItemWidth = 150, MinItemHeight = 150
} : (VirtualizingLayout) new StackLayout();
RepeaterTestHooks.SetLayoutId(repeater.Layout, group.Name);
repeater.ItemTemplate = this;
repeater.Animator = _animator;
}
else
{
var recipe = (Recipe)args.Data;
var image = (Image)element.FindName("recipeImage");
var description = (TextBlock)element.FindName("recipeDescription");
image.Source = new BitmapImage(recipe.ImageUri);
description.Text = recipe.Description;
}
return(element);
}