private ItemsRepeater SetupRepeater(CustomItemsSource dataSource, ElementFactory elementFactory, ref ScrollViewer scrollViewer, VirtualizingLayout layout)
{
var repeater = new ItemsRepeater()
{
ItemsSource = dataSource,
#if BUILD_WINDOWS
ItemTemplate = (Windows.UI.Xaml.IElementFactory)elementFactory,
#else
ItemTemplate = elementFactory,
#endif
Layout = layout,
VerticalCacheLength = 0,
HorizontalCacheLength = 0
};
scrollViewer = new ScrollViewer
{
Content = repeater
};
Content = new ItemsRepeaterScrollHost()
{
Width = 200,
Height = 200,
ScrollViewer = scrollViewer
};
Content.UpdateLayout();
int realized = VerifyRealizedRange(repeater, dataSource);
Verify.IsGreaterThan(realized, 0);
return(repeater);
}
private ItemsRepeater SetupRepeater(CustomItemsSource dataSource, ElementFactory elementFactory, ref ScrollViewer scrollViewer, VirtualizingLayout layout)
{
var repeater = new ItemsRepeater()
{
ItemsSource = dataSource,
ItemTemplate = elementFactory,
Layout = layout,
VerticalCacheLength = 0,
HorizontalCacheLength = 0
};
scrollViewer = new ScrollViewer
{
Content = repeater
};
Content = new ItemsRepeaterScrollHost()
{
Width = 200,
Height = 200,
ScrollViewer = scrollViewer
};
Content.UpdateLayout();
if (dataSource.Count > 0)
{
int realized = VerifyRealizedRange(repeater, dataSource);
Verify.IsGreaterThan(realized, 0);
}
return(repeater);
}
public void ValidateRepeaterDefaults()
{
RunOnUIThread.Execute(() =>
{
var repeater = new ItemsRepeater()
{
ItemsSource = Enumerable.Range(0, 10).Select(i => string.Format("Item #{0}", i)),
};
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));
});
}
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 ItemsRepeaterScrollHost()
{
Width = 200,
Height = 200,
ScrollViewer = sv
};
});
IdleSynchronizer.Wait();
scrollViewer = sv;
return(repeater);
}
public void VerifyCorrectionsInNonScrollableDirection()
{
ItemsRepeater rootRepeater = null;
ScrollViewer scrollViewer = null;
ItemsRepeaterScrollHost scrollhost = null;
ManualResetEvent viewChanged = new ManualResetEvent(false);
RunOnUIThread.Execute(() =>
{
scrollhost = (ItemsRepeaterScrollHost)XamlReader.Load(
@"<controls:ItemsRepeaterScrollHost Width='400' Height='600'
xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'
xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
xmlns:controls='using:Microsoft.UI.Xaml.Controls'>
<ScrollViewer Width='400' Height='400' x:Name='scrollviewer'>
<controls:ItemsRepeater x:Name='repeater'>
<DataTemplate>
<StackPanel>
<controls:ItemsRepeater ItemsSource='{Binding}'>
<controls:ItemsRepeater.Layout>
<controls:StackLayout Orientation='Horizontal' />
</controls:ItemsRepeater.Layout>
</controls:ItemsRepeater>
</StackPanel>
</DataTemplate>
</controls:ItemsRepeater>
</ScrollViewer>
</controls:ItemsRepeaterScrollHost>");
rootRepeater = (ItemsRepeater)scrollhost.FindName("repeater");
scrollViewer = (ScrollViewer)scrollhost.FindName("scrollviewer");
scrollViewer.ViewChanged += (sender, args) =>
{
if (!args.IsIntermediate)
{
viewChanged.Set();
}
};
List <List <int> > items = new List <List <int> >();
for (int i = 0; i < 100; i++)
{
items.Add(Enumerable.Range(0, 4).ToList());
}
rootRepeater.ItemsSource = items;
Content = scrollhost;
});
// scroll down several times and validate no crash
for (int i = 1; i < 5; i++)
{
IdleSynchronizer.Wait();
RunOnUIThread.Execute(() =>
{
scrollViewer.ChangeView(null, i * 200, null);
});
Verify.IsTrue(viewChanged.WaitOne(DefaultWaitTimeInMS));
viewChanged.Reset();
}
}
public void VerifyCurrentAnchor()
{
ItemsRepeater rootRepeater = null;
ScrollViewer scrollViewer = null;
ItemsRepeaterScrollHost scrollhost = null;
ManualResetEvent viewChanged = new ManualResetEvent(false);
RunOnUIThread.Execute(() =>
{
scrollhost = (ItemsRepeaterScrollHost)XamlReader.Load(
@"<controls:ItemsRepeaterScrollHost Width='400' Height='600'
xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'
xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
xmlns:controls='using:Microsoft.UI.Xaml.Controls'>
<controls:ItemsRepeaterScrollHost.Resources>
<DataTemplate x:Key='ItemTemplate' >
<TextBlock Text='{Binding}' Height='50'/>
</DataTemplate>
</controls:ItemsRepeaterScrollHost.Resources>
<ScrollViewer x:Name='scrollviewer'>
<controls:ItemsRepeater x:Name='rootRepeater' ItemTemplate='{StaticResource ItemTemplate}' VerticalCacheLength='0' />
</ScrollViewer>
</controls:ItemsRepeaterScrollHost>");
rootRepeater = (ItemsRepeater)scrollhost.FindName("rootRepeater");
scrollViewer = (ScrollViewer)scrollhost.FindName("scrollviewer");
scrollViewer.ViewChanged += (sender, args) =>
{
if (!args.IsIntermediate)
{
viewChanged.Set();
}
};
rootRepeater.ItemsSource = Enumerable.Range(0, 500);
Content = scrollhost;
});
// scroll down several times and validate current anchor
for (int i = 1; i < 10; i++)
{
IdleSynchronizer.Wait();
RunOnUIThread.Execute(() =>
{
scrollViewer.ChangeView(null, i * 200, null);
});
Verify.IsTrue(viewChanged.WaitOne(DefaultWaitTimeInMS));
viewChanged.Reset();
RunOnUIThread.Execute(() =>
{
Verify.AreEqual(i * 200, scrollViewer.VerticalOffset);
var anchor = PlatformConfiguration.IsOSVersionLessThan(OSVersion.Redstone5) ?
scrollhost.CurrentAnchor :
scrollViewer.CurrentAnchor;
var anchorIndex = rootRepeater.GetElementIndex(anchor);
Log.Comment("CurrentAnchor: " + anchorIndex);
Verify.AreEqual(i * 4, anchorIndex);
});
}
}
public void ValidateRecycledElementOwnerAffinity()
{
RunOnUIThread.Execute(() =>
{
ItemsRepeater repeater1 = null;
ItemsRepeater repeater2 = null;
const int numItems = 10;
var dataCollection = new ObservableCollection <int>(Enumerable.Range(0, numItems));
const string recycleKey = "key";
var dataSource = MockItemsSource.CreateDataSource <int>(dataCollection, true);
var layout = new StackLayout();
var recyclePool = new RecyclePool();
var itemTemplate = (DataTemplate)XamlReader.Load(
@"<DataTemplate xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'>
<TextBlock Text='{Binding}' />
</DataTemplate>");
repeater1 = new ItemsRepeater()
{
ItemsSource = dataSource,
Layout = layout,
#if BUILD_WINDOWS
ItemTemplate = (Windows.UI.Xaml.IElementFactory) new RecyclingElementFactoryDerived()
#else
ItemTemplate = new RecyclingElementFactoryDerived()
#endif
{
Templates = { { "key", itemTemplate } },
RecyclePool = recyclePool,
SelectTemplateIdFunc = (object data, UIElement owner) => recycleKey
}
};
repeater2 = new ItemsRepeater()
{
ItemsSource = dataSource,
Layout = layout,
#if BUILD_WINDOWS
ItemTemplate = (Windows.UI.Xaml.IElementFactory) new RecyclingElementFactoryDerived()
#else
ItemTemplate = new RecyclingElementFactoryDerived()
#endif
{
Templates = { { "key", itemTemplate } },
RecyclePool = recyclePool,
SelectTemplateIdFunc = (object data, UIElement owner) => recycleKey
}
};
var root = new StackPanel();
root.Children.Add(repeater1);
root.Children.Add(repeater2);
Content = new ItemsRepeaterScrollHost()
{
Width = 400,
Height = 400,
ScrollViewer = new ScrollViewer()
{
Content = root
}
};
Content.UpdateLayout();
Verify.AreEqual(numItems, VisualTreeHelper.GetChildrenCount(repeater1));
Verify.AreEqual(numItems, VisualTreeHelper.GetChildrenCount(repeater2));
// Throw all the elements into the recycle pool
dataCollection.Clear();
Content.UpdateLayout();
for (int i = 0; i < numItems; i++)
{
var element1 = (FrameworkElement)recyclePool.TryGetElement(recycleKey, repeater1);
Verify.AreSame(repeater1, element1.Parent);
var element2 = (FrameworkElement)recyclePool.TryGetElement(recycleKey, repeater2);
Verify.AreSame(repeater2, element2.Parent);
}
});
}
public void ValidatePhaseInvokeAndOrdering()
{
if (!PlatformConfiguration.IsOsVersionGreaterThan(OSVersion.Redstone2))
{
Log.Warning("Skipping: GetAvailableSize API is only available in RS3 and above.");
return;
}
ItemsRepeater repeater = null;
int numPhases = 6; // 0 to 5
ManualResetEvent buildTreeCompleted = new ManualResetEvent(false);
RunOnUIThread.Execute(() =>
{
var itemTemplate = (DataTemplate)XamlReader.Load(
@"<DataTemplate xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'>
<Button Width='100' Height='100'/>
</DataTemplate>");
repeater = new ItemsRepeater()
{
ItemsSource = Enumerable.Range(0, 10),
#if BUILD_WINDOWS
ItemTemplate = (Windows.UI.Xaml.IElementFactory) new CustomElementFactory(numPhases),
#else
ItemTemplate = new CustomElementFactory(numPhases),
#endif
Layout = new StackLayout(),
};
repeater.ElementPrepared += (sender, args) =>
{
if (args.Index == expectedLastRealizedIndex)
{
Log.Comment("Item 8 Created!");
RepeaterTestHooks.BuildTreeCompleted += (sender1, args1) =>
{
buildTreeCompleted.Set();
};
}
};
Content = new ItemsRepeaterScrollHost()
{
Width = 400,
Height = 400,
ScrollViewer = new ScrollViewer
{
Content = repeater
}
};
// CompositionTarget.Rendering += (sender, args) => { Log.Comment("Rendering"); }; // debugging aid
});
if (buildTreeCompleted.WaitOne(TimeSpan.FromMilliseconds(2000)))
{
RunOnUIThread.Execute(() =>
{
var calls = ElementPhasingManager.ProcessedCalls;
Verify.AreEqual(9, calls.Count);
calls[0].RemoveAt(0); // Remove the create we did for first measure.
foreach (var index in calls.Keys)
{
var phases = calls[index];
Verify.AreEqual(6, phases.Count);
for (int i = 0; i < phases.Count; i++)
{
Verify.AreEqual(i, phases[i]);
}
}
ElementPhasingManager.ProcessedCalls.Clear();
});
}
else
{
Verify.Fail("Failed on waiting on build tree.");
}
}
public void ValidateXBindWithoutPhasing()
{
ItemsRepeater repeater = null;
int numPhases = 1; // Just Phase 0 for x:Bind
ManualResetEvent ElementLoadedCompleted = new ManualResetEvent(false);
RunOnUIThread.Execute(() =>
{
var itemTemplate = (DataTemplate)XamlReader.Load(
@"<DataTemplate xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'>
<Button Width='100' Height='100'/>
</DataTemplate>");
repeater = new ItemsRepeater()
{
ItemsSource = Enumerable.Range(0, 10),
#if BUILD_WINDOWS
ItemTemplate = (Windows.UI.Xaml.IElementFactory) new CustomElementFactory(numPhases),
#else
ItemTemplate = new CustomElementFactory(numPhases),
#endif
Layout = new StackLayout(),
};
repeater.ElementPrepared += (sender, args) =>
{
if (args.Index == expectedLastRealizedIndex)
{
Log.Comment("Item 8 Created!");
ElementLoadedCompleted.Set();
}
};
Content = new ItemsRepeaterScrollHost()
{
Width = 400,
Height = 400,
ScrollViewer = new ScrollViewer
{
Content = repeater
}
};
});
if (ElementLoadedCompleted.WaitOne(TimeSpan.FromMilliseconds(2000)))
{
RunOnUIThread.Execute(() =>
{
var calls = ElementPhasingManager.ProcessedCalls;
Verify.AreEqual(calls.Count, 9);
calls[0].RemoveAt(0); // Remove the create we did for first measure.
foreach (var index in calls.Keys)
{
var phases = calls[index];
Verify.AreEqual(1, phases.Count); // Just phase 0
}
ElementPhasingManager.ProcessedCalls.Clear();
});
}
else
{
Verify.Fail("Failed on waiting on build tree.");
}
}
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);
}
public async Task ValidateXBindWithoutPhasing()
{
ItemsRepeater repeater = null;
int numPhases = 1; // Just Phase 0 for x:Bind
bool ElementLoadedCompleted = false;
RunOnUIThread.Execute(() =>
{
var itemTemplate = (DataTemplate)XamlReader.Load(
@"<DataTemplate xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'>
<Button Width='100' Height='100'/>
</DataTemplate>");
repeater = new ItemsRepeater()
{
ItemsSource = Enumerable.Range(0, 10),
ItemTemplate = new CustomElementFactory(numPhases),
Layout = new StackLayout(),
};
repeater.ElementPrepared += (sender, args) =>
{
if (args.Index == expectedLastRealizedIndex)
{
Log.Comment("Item 8 Created!");
ElementLoadedCompleted = true;
}
};
Content = new ItemsRepeaterScrollHost()
{
Width = 400,
Height = 400,
ScrollViewer = new ScrollViewer
{
Content = repeater
}
};
});
await TestServices.WindowHelper.WaitFor(() => ElementLoadedCompleted, 2000);
if (ElementLoadedCompleted)
{
RunOnUIThread.Execute(() =>
{
var calls = ElementPhasingManager.ProcessedCalls;
Verify.AreEqual(calls.Count, 9);
calls[0].RemoveAt(0); // Remove the create we did for first measure.
foreach (var index in calls.Keys)
{
var phases = calls[index];
Verify.AreEqual(1, phases.Count); // Just phase 0
}
ElementPhasingManager.ProcessedCalls.Clear();
});
}
else
{
Verify.Fail("Failed on waiting on build tree.");
}
}
