public void Inserting_Then_Removing_Should_Add_Remove_Containers()
{
var items = new AvaloniaList <string>(Enumerable.Range(0, 5).Select(x => $"Item {x}"));
var toAdd = Enumerable.Range(0, 3).Select(x => $"Added Item {x}").ToArray();
var target = new ItemsPresenter
{
VirtualizationMode = ItemVirtualizationMode.None,
Items = items,
ItemTemplate = new FuncDataTemplate <string>(x => new TextBlock {
Height = 10
}),
};
target.ApplyTemplate();
Assert.Equal(items.Count, target.Panel.Children.Count);
foreach (var item in toAdd)
{
items.Insert(1, item);
}
Assert.Equal(items.Count, target.Panel.Children.Count);
foreach (var item in toAdd)
{
items.Remove(item);
}
Assert.Equal(items.Count, target.Panel.Children.Count);
}
public void CreateDerivedList_Handles_Remove()
{
var source = new AvaloniaList <int>(new[] { 0, 1, 2, 3 });
var target = source.CreateDerivedList(x => new Wrapper(x));
source.Remove(2);
var result = target.Select(x => x.Value).ToList();
Assert.Equal(source, result);
}
public void ListBox_Should_Be_Valid_After_Remove_Of_Item_In_NonVisibleArea()
{
using (UnitTestApplication.Start(TestServices.StyledWindow))
{
var items = new AvaloniaList <string>(Enumerable.Range(1, 30).Select(v => v.ToString()));
var wnd = new Window()
{
Width = 100, Height = 100, IsVisible = true
};
var target = new ListBox()
{
AutoScrollToSelectedItem = true,
Height = 100,
Width = 50,
VirtualizationMode = ItemVirtualizationMode.Simple,
ItemTemplate = new FuncDataTemplate <object>((c, _) => new Border()
{
Height = 10
}),
Items = items,
};
wnd.Content = target;
var lm = wnd.LayoutManager;
lm.ExecuteInitialLayoutPass();
//select last / scroll to last item
target.SelectedItem = items.Last();
lm.ExecuteLayoutPass();
//remove the first item (in non realized area of the listbox)
items.Remove("1");
lm.ExecuteLayoutPass();
Assert.Equal("30", target.ItemContainerGenerator.ContainerFromIndex(items.Count - 1).DataContext);
Assert.Equal("29", target.ItemContainerGenerator.ContainerFromIndex(items.Count - 2).DataContext);
Assert.Equal("28", target.ItemContainerGenerator.ContainerFromIndex(items.Count - 3).DataContext);
Assert.Equal("27", target.ItemContainerGenerator.ContainerFromIndex(items.Count - 4).DataContext);
Assert.Equal("26", target.ItemContainerGenerator.ContainerFromIndex(items.Count - 5).DataContext);
}
}
public void Removing_Item_Should_Raise_CollectionChanged()
{
var target = new AvaloniaList <int>(new[] { 1, 2, 3 });
var raised = false;
target.CollectionChanged += (s, e) =>
{
Assert.Equal(target, s);
Assert.Equal(NotifyCollectionChangedAction.Remove, e.Action);
Assert.Equal(new[] { 3 }, e.OldItems.Cast <int>());
Assert.Equal(2, e.OldStartingIndex);
raised = true;
};
target.Remove(3);
Assert.True(raised);
}
public void Removing_Items_Should_Fire_LogicalChildren_CollectionChanged()
{
var target = new ItemsControl();
var items = new AvaloniaList <string> {
"Foo", "Bar"
};
var called = false;
target.Template = GetTemplate();
target.Items = items;
target.ApplyTemplate();
target.Presenter.ApplyTemplate();
((ILogical)target).LogicalChildren.CollectionChanged += (s, e) =>
called = e.Action == NotifyCollectionChangedAction.Remove;
items.Remove("Bar");
Assert.True(called);
}
public async Task <Download?> DownloadAsync(Server server)
{
if (server.DownloadUrl == null)
{
throw new ArgumentNullException(nameof(server.DownloadUrl));
}
var download = new Download(server.DownloadUrl, server.InstallationPath);
if (!download.CanStart())
{
return(null);
}
_downloads.Remove(_downloads.FirstOrDefault(d => d.ForkAndVersion == download.ForkAndVersion));
_downloads.Add(download);
await download.StartAsync(_http);
return(download);
}
public void Containers_Correct_After_Clear_Add_Remove()
{
// Issue #1936
var items = new AvaloniaList <string>(Enumerable.Range(0, 11).Select(x => $"Item {x}"));
var target = new ListBox
{
Template = ListBoxTemplate(),
Items = items,
ItemTemplate = new FuncDataTemplate <string>((x, _) => new TextBlock {
Width = 20, Height = 10
}),
SelectedIndex = 0,
};
Prepare(target);
items.Clear();
items.AddRange(Enumerable.Range(0, 11).Select(x => $"Item {x}"));
items.Remove("Item 2");
Assert.Equal(
items,
target.Presenter.Panel.Children.Cast <ListBoxItem>().Select(x => (string)x.Content));
}
public void Inserting_Then_Removing_Should_Add_Remove_Containers()
{
var items = new AvaloniaList<string>(Enumerable.Range(0, 5).Select(x => $"Item {x}"));
var toAdd = Enumerable.Range(0, 3).Select(x => $"Added Item {x}").ToArray();
var target = new ItemsPresenter
{
VirtualizationMode = ItemVirtualizationMode.None,
Items = items,
ItemTemplate = new FuncDataTemplate<string>(x => new TextBlock { Height = 10 }),
};
target.ApplyTemplate();
Assert.Equal(items.Count, target.Panel.Children.Count);
foreach (var item in toAdd)
{
items.Insert(1, item);
}
Assert.Equal(items.Count, target.Panel.Children.Count);
foreach (var item in toAdd)
{
items.Remove(item);
}
Assert.Equal(items.Count, target.Panel.Children.Count);
}
public void Removing_Items_Should_Fire_LogicalChildren_CollectionChanged()
{
var target = new ItemsControl();
var items = new AvaloniaList<string> { "Foo", "Bar" };
var called = false;
target.Template = GetTemplate();
target.Items = items;
target.ApplyTemplate();
target.Presenter.ApplyTemplate();
((ILogical)target).LogicalChildren.CollectionChanged += (s, e) =>
called = e.Action == NotifyCollectionChangedAction.Remove;
items.Remove("Bar");
Assert.True(called);
}
public void Removing_Item_Should_Raise_CollectionChanged()
{
var target = new AvaloniaList<int>(new[] { 1, 2, 3 });
var raised = false;
target.CollectionChanged += (s, e) =>
{
Assert.Equal(target, s);
Assert.Equal(NotifyCollectionChangedAction.Remove, e.Action);
Assert.Equal(new[] { 3 }, e.OldItems.Cast<int>());
Assert.Equal(2, e.OldStartingIndex);
raised = true;
};
target.Remove(3);
Assert.True(raised);
}