public void Should_Not_Overwrite_TemplatedParent_Of_Item_In_ItemsControl_With_Popup_On_Second_Open()
{
// Test uses OverlayPopupHost default template
using (CreateServices())
{
PopupItemsControl target;
var item = new Border();
var root = PreparedWindow(target = new PopupItemsControl
{
Items = new[] { item },
Template = new FuncControlTemplate <PopupItemsControl>(PopupItemsControlTemplate),
});
root.Show();
target.ApplyTemplate();
var popup = (Popup)target.GetTemplateChildren().First(x => x.Name == "popup");
popup.Open();
var popupRoot = (Control)popup.Host;
popupRoot.Measure(Size.Infinity);
popupRoot.Arrange(new Rect(popupRoot.DesiredSize));
Assert.Null(item.TemplatedParent);
popup.Close();
popup.Open();
Assert.Null(item.TemplatedParent);
}
}
private static IControl PopupItemsControlTemplate(PopupItemsControl control, INameScope scope)
{
return(new Popup
{
Name = "popup",
PlacementTarget = control,
Child = new ItemsPresenter
{
[~ItemsPresenter.ItemsProperty] = control[~ItemsControl.ItemsProperty],
}
}.RegisterInNameScope(scope));
}
public void ItemsControl_With_Popup_In_Template_Should_Set_TemplatedParent()
{
// Test uses OverlayPopupHost default template
using (CreateServices())
{
PopupItemsControl target;
var item = new Border();
var root = PreparedWindow(target = new PopupItemsControl
{
Items = new[] { item },
Template = new FuncControlTemplate <PopupItemsControl>(PopupItemsControlTemplate),
});;
root.Show();
target.ApplyTemplate();
var popup = (Popup)target.GetTemplateChildren().First(x => x.Name == "popup");
popup.Open();
var popupRoot = (Control)popup.Host;
popupRoot.Measure(Size.Infinity);
popupRoot.Arrange(new Rect(popupRoot.DesiredSize));
var children = popupRoot.GetVisualDescendants().ToList();
var types = children.Select(x => x.GetType().Name).ToList();
if (UsePopupHost)
{
Assert.Equal(
new[]
{
"LayoutTransformControl",
"VisualLayerManager",
"ContentPresenter",
"ItemsPresenter",
"StackPanel",
"Border",
},
types);
}
else
{
Assert.Equal(
new[]
{
"LayoutTransformControl",
"Panel",
"Border",
"VisualLayerManager",
"ContentPresenter",
"ItemsPresenter",
"StackPanel",
"Border",
},
types);
}
var templatedParents = children
.OfType <IControl>()
.Select(x => x.TemplatedParent).ToList();
if (UsePopupHost)
{
Assert.Equal(
new object[]
{
popupRoot,
popupRoot,
popupRoot,
target,
target,
null,
},
templatedParents);
}
else
{
Assert.Equal(
new object[]
{
popupRoot,
popupRoot,
popupRoot,
popupRoot,
popupRoot,
target,
target,
null,
},
templatedParents);
}
}
}