public void ValidateNoSizeWhenEmptyDataTemplate()
{
ItemsRepeater repeater = null;
RunOnUIThread.Execute(() =>
{
var elementFactory = new RecyclingElementFactory();
elementFactory.RecyclePool = new RecyclePool();
elementFactory.Templates["Item"] = (DataTemplate)XamlReader.Load(
@"<DataTemplate xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation' />");
repeater = new ItemsRepeater()
{
ItemsSource = Enumerable.Range(0, 10).Select(i => string.Format("Item #{0}", i)),
ItemTemplate = elementFactory,
// Default is StackLayout, so do not have to explicitly set.
// Layout = new StackLayout(),
};
repeater.UpdateLayout();
// Asserting render size is zero
Verify.IsLessThan(repeater.RenderSize.Width, 0.0001);
Verify.IsLessThan(repeater.RenderSize.Height, 0.0001);
});
}
private RecyclingElementFactory GetElementFactory()
{
var elementFactory = new RecyclingElementFactory();
elementFactory.RecyclePool = new RecyclePool();
elementFactory.Templates["Item"] = SharedHelpers.GetDataTemplate(@"<TextBlock Text='{Binding}' Height='100' />");
return(elementFactory);
}
public void ValidateElementToIndexMapping()
{
ItemsRepeater repeater = null;
RunOnUIThread.Execute(() =>
{
var elementFactory = new RecyclingElementFactory();
elementFactory.RecyclePool = new RecyclePool();
elementFactory.Templates["Item"] = (DataTemplate)XamlReader.Load(
@"<DataTemplate xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'>
<TextBlock Text='{Binding}' Height='50' />
</DataTemplate>");
repeater = new ItemsRepeater()
{
ItemsSource = Enumerable.Range(0, 10).Select(i => string.Format("Item #{0}", i)),
#if BUILD_WINDOWS
ItemTemplate = (Windows.UI.Xaml.IElementFactory)elementFactory,
#else
ItemTemplate = elementFactory,
#endif
// Default is StackLayout, so do not have to explicitly set.
// Layout = new StackLayout(),
};
Content = new ItemsRepeaterScrollHost()
{
Width = 400,
Height = 800,
ScrollViewer = new ScrollViewer
{
Content = repeater
}
};
Content.UpdateLayout();
for (int i = 0; i < 10; i++)
{
var element = repeater.TryGetElement(i);
Verify.IsNotNull(element);
Verify.AreEqual(string.Format("Item #{0}", i), ((TextBlock)element).Text);
Verify.AreEqual(i, repeater.GetElementIndex(element));
}
Verify.IsNull(repeater.TryGetElement(20));
});
}
private ItemsRepeater SetupRepeater(object dataSource, VirtualizingLayout layout, string itemContent, out ScrollViewer scrollViewer)
{
ItemsRepeater repeater = null;
ScrollViewer sv = null;
RunOnUIThread.Execute(() =>
{
var elementFactory = new RecyclingElementFactory();
elementFactory.RecyclePool = new RecyclePool();
elementFactory.Templates["Item"] = (DataTemplate)XamlReader.Load(
@"<DataTemplate xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'> " + itemContent + @"</DataTemplate>");
repeater = new ItemsRepeater()
{
ItemsSource = dataSource,
#if BUILD_WINDOWS
ItemTemplate = (Windows.UI.Xaml.IElementFactory)elementFactory,
#else
ItemTemplate = elementFactory,
#endif
Layout = layout,
HorizontalCacheLength = 0.0,
VerticalCacheLength = 0.0
};
sv = new ScrollViewer
{
Content = repeater
};
Content = new ScrollAnchorProvider()
{
Width = 200,
Height = 200,
Content = sv
};
});
IdleSynchronizer.Wait();
scrollViewer = sv;
return(repeater);
}
private void OnSelectTemplateKey(RecyclingElementFactory sender, SelectTemplateEventArgs args)
{
args.TemplateKey = (int.Parse(args.DataContext.ToString()) % 2 == 0) ? "even" : "odd";
}
private void ElementFactory_SelectTemplateKey(RecyclingElementFactory sender, SelectTemplateEventArgs args)
{
args.TemplateKey = args.DataContext is IEnumerable ? "group" : "item";
}
private void OnSelectTemplateKey(RecyclingElementFactory sender, SelectTemplateEventArgs args)
{
args.TemplateKey = args.DataContext is string? "RepeaterItemTemplate" : "RepeaterGroupTemplate";
}
public void ValidateTabNavigation()
{
if (!PlatformConfiguration.IsOsVersionGreaterThan(OSVersion.Redstone2))
{
Log.Warning("Test is disabled on anything lower than RS3 because the GetChildrenInTabFocusOrder API is not available on previous versions.");
return;
}
ItemsRepeater repeater = null;
ScrollViewer scrollViewer = null;
var data = new ObservableCollection <string>(Enumerable.Range(0, 50).Select(i => "Item #" + i));
var viewChangedEvent = new AutoResetEvent(false);
RunOnUIThread.Execute(() =>
{
var itemTemplate = (DataTemplate)XamlReader.Load(
@"<DataTemplate xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'>
<Button Content='{Binding}' Height='100' />
</DataTemplate>" );
var elementFactory = new RecyclingElementFactory()
{
RecyclePool = new RecyclePool(),
Templates =
{
{ "itemTemplate", itemTemplate },
}
};
Content = CreateAndInitializeRepeater
(
data,
new StackLayout(),
elementFactory,
ref repeater,
ref scrollViewer
);
scrollViewer.ViewChanged += (s, e) =>
{
if (!e.IsIntermediate)
{
viewChangedEvent.Set();
}
};
repeater.TabFocusNavigation = KeyboardNavigationMode.Local;
Content.UpdateLayout();
ValidateTabNavigationOrder(repeater);
});
IdleSynchronizer.Wait();
RunOnUIThread.Execute(() =>
{
// Move window - disconnected
scrollViewer.ChangeView(null, 2000, null, true);
});
Verify.IsTrue(viewChangedEvent.WaitOne(DefaultWaitTimeInMS), "Waiting for final ViewChanged event.");
IdleSynchronizer.Wait();
RunOnUIThread.Execute(() =>
{
ValidateTabNavigationOrder(repeater);
// Delete a couple of elements and validate we
// ignore unrealized elements.
// First visible element is expected to be index 20.
while (data.Count > 21)
{
data.RemoveAt(21);
}
repeater.UpdateLayout();
ValidateTabNavigationOrder(repeater);
});
}
private void SetupRepeaterAnchoringUI(
Scroller scroller,
AutoResetEvent scrollerLoadedEvent)
{
Log.Comment("Setting up ItemsRepeater anchoring UI with Scroller and ItemsRepeater");
TestDataSource dataSource = new TestDataSource(
Enumerable.Range(0, c_defaultAnchoringUIRepeaterChildrenCount).Select(i => string.Format("Item #{0}", i)).ToList());
RecyclingElementFactory elementFactory = new RecyclingElementFactory();
elementFactory.RecyclePool = new RecyclePool();
elementFactory.Templates["Item"] = XamlReader.Load(
@"<DataTemplate xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'>
<Border BorderThickness='3' BorderBrush='Chartreuse' Width='100' Height='100' Margin='3' Background='BlanchedAlmond'>
<TextBlock Text='{Binding}' HorizontalAlignment='Center' VerticalAlignment='Center'/>
</Border>
</DataTemplate>") as DataTemplate;
ItemsRepeater repeater = new ItemsRepeater()
{
Name = "repeater",
ItemsSource = dataSource,
#if BUILD_WINDOWS
ItemTemplate = (Windows.UI.Xaml.IElementFactory)elementFactory,
#else
ItemTemplate = elementFactory,
#endif
Layout = new UniformGridLayout()
{
MinItemWidth = 125,
MinItemHeight = 125,
MinRowSpacing = 10,
MinColumnSpacing = 10
},
Margin = new Thickness(30)
};
Border border = new Border()
{
Name = "border",
BorderThickness = new Thickness(3),
BorderBrush = new SolidColorBrush(Colors.Chartreuse),
Margin = new Thickness(15),
Background = new SolidColorBrush(Colors.Beige),
Child = repeater
};
Verify.IsNotNull(scroller);
scroller.Name = "scroller";
scroller.IsChildAvailableWidthConstrained = true;
scroller.Width = 400;
scroller.Height = 600;
scroller.Background = new SolidColorBrush(Colors.AliceBlue);
scroller.Child = border;
if (scrollerLoadedEvent != null)
{
scroller.Loaded += (object sender, RoutedEventArgs e) =>
{
Log.Comment("Scroller.Loaded event handler");
scrollerLoadedEvent.Set();
};
}
scroller.AnchorRequested += (Scroller sender, ScrollerAnchorRequestedEventArgs args) =>
{
Log.Comment("Scroller.AnchorRequested event handler");
Verify.IsNull(args.AnchorElement);
Verify.IsGreaterThan(args.AnchorCandidates.Count, 0);
};
Log.Comment("Setting window content");
MUXControlsTestApp.App.TestContentRoot = scroller;
}
private void OnSelectTemplateKey(RecyclingElementFactory sender, SelectTemplateEventArgs args)
{
args.TemplateKey = (((int)args.DataContext) % 2 == 0) ? "even" : "odd";
}
public void ValidateElementAnimator()
{
ItemsRepeater repeater = null;
ElementAnimatorDerived animator = null;
var data = new ObservableCollection <string>(Enumerable.Range(0, 10).Select(i => string.Format("Item #{0}", i)));
var renderingEvent = new ManualResetEvent(false);
RunOnUIThread.Execute(() =>
{
var elementFactory = new RecyclingElementFactory();
elementFactory.RecyclePool = new RecyclePool();
elementFactory.Templates["Item"] = (DataTemplate)XamlReader.Load(
@"<DataTemplate xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'>
<TextBlock Text='{Binding}' Height='50' />
</DataTemplate>");
CompositionTarget.Rendering += (sender, args) =>
{
renderingEvent.Set();
};
repeater = new ItemsRepeater()
{
ItemsSource = data,
ItemTemplate = elementFactory,
};
Content = new ItemsRepeaterScrollHost()
{
Width = 400,
Height = 800,
ScrollViewer = new ScrollViewer
{
Content = repeater
}
};
});
IdleSynchronizer.Wait();
Verify.IsTrue(renderingEvent.WaitOne(), "Waiting for rendering event");
List <CallInfo> showCalls = new List <CallInfo>();
List <CallInfo> hideCalls = new List <CallInfo>();
List <CallInfo> boundsChangeCalls = new List <CallInfo>();
RunOnUIThread.Execute(() =>
{
animator = new ElementAnimatorDerived()
{
HasShowAnimationValue = true,
HasHideAnimationValue = true,
HasBoundsChangeAnimationValue = true,
StartShowAnimationFunc = (UIElement element, AnimationContext context) =>
{
showCalls.Add(new CallInfo(repeater.GetElementIndex(element), context));
},
StartHideAnimationFunc = (UIElement element, AnimationContext context) =>
{
hideCalls.Add(new CallInfo(repeater.GetElementIndex(element), context));
},
StartBoundsChangeAnimationFunc = (UIElement element, AnimationContext context, Rect oldBounds, Rect newBounds) =>
{
boundsChangeCalls.Add(new CallInfo(repeater.GetElementIndex(element), context, oldBounds, newBounds));
}
};
repeater.Animator = animator;
renderingEvent.Reset();
data.Insert(0, "new item");
data.RemoveAt(2);
});
Verify.IsTrue(renderingEvent.WaitOne(), "Waiting for rendering event");
IdleSynchronizer.Wait();
Verify.AreEqual(1, showCalls.Count);
var call = showCalls[0];
Verify.AreEqual(0, call.Index);
Verify.AreEqual(AnimationContext.CollectionChangeAdd, call.Context);
Verify.AreEqual(1, hideCalls.Count);
call = hideCalls[0];
Verify.AreEqual(-1, call.Index); // not in the repeater anymore
Verify.AreEqual(AnimationContext.CollectionChangeRemove, call.Context);
Verify.AreEqual(1, boundsChangeCalls.Count);
call = boundsChangeCalls[0];
Verify.AreEqual(1, call.Index);
Verify.AreEqual(AnimationContext.CollectionChangeAdd | AnimationContext.CollectionChangeRemove, call.Context);
Verify.AreEqual(0, call.OldBounds.Y);
Verify.AreEqual(50, call.NewBounds.Y);
showCalls.Clear();
hideCalls.Clear();
boundsChangeCalls.Clear();
// Hookup just for show animations and validate.
RunOnUIThread.Execute(() =>
{
animator.HasShowAnimationValue = true;
animator.HasHideAnimationValue = false;
animator.HasBoundsChangeAnimationValue = false;
renderingEvent.Reset();
data.Insert(0, "new item");
data.RemoveAt(2);
});
Verify.IsTrue(renderingEvent.WaitOne(), "Waiting for rendering event");
IdleSynchronizer.Wait();
Verify.AreEqual(1, showCalls.Count);
call = showCalls[0];
Verify.AreEqual(0, call.Index);
Verify.AreEqual(AnimationContext.CollectionChangeAdd, call.Context);
Verify.AreEqual(0, hideCalls.Count);
Verify.AreEqual(0, boundsChangeCalls.Count);
}
private void OnSelectTemplateKey(RecyclingElementFactory sender, SelectTemplateEventArgs args)
{
args.TemplateKey = args.DataContext is Category ? "Category" : "Item";
}
