public void Dematerialize_Should_Return_Removed_Containers()
{
var items = new[] { "foo", "bar", "baz" };
var owner = new Decorator();
var target = new ItemContainerGenerator(owner);
var containers = Materialize(target, 0, items);
var expected = target.Containers.Take(2).ToList();
var result = target.Dematerialize(0, 2);
Assert.Equal(expected, result);
}
public void IndexFromContainer_Should_Return_Index()
{
var items = new[] { "foo", "bar", "baz" };
var owner = new Decorator();
var target = new ItemContainerGenerator(owner);
var containers = Materialize(target, 0, items);
Assert.Equal(0, target.IndexFromContainer(containers[0].ContainerControl));
Assert.Equal(1, target.IndexFromContainer(containers[1].ContainerControl));
Assert.Equal(2, target.IndexFromContainer(containers[2].ContainerControl));
}
public void ContainerFromIndex_Should_Return_Materialized_Containers()
{
var items = new[] { "foo", "bar", "baz" };
var owner = new Decorator();
var target = new ItemContainerGenerator(owner);
var containers = Materialize(target, 0, items);
Assert.Equal(containers[0].ContainerControl, target.ContainerFromIndex(0));
Assert.Equal(containers[1].ContainerControl, target.ContainerFromIndex(1));
Assert.Equal(containers[2].ContainerControl, target.ContainerFromIndex(2));
}
public void Dematerialize_Should_Remove_Container()
{
var items = new[] { "foo", "bar", "baz" };
var owner = new Decorator();
var target = new ItemContainerGenerator(owner);
var containers = Materialize(target, 0, items);
target.Dematerialize(1, 1);
Assert.Equal(containers[0].ContainerControl, target.ContainerFromIndex(0));
Assert.Equal(null, target.ContainerFromIndex(1));
Assert.Equal(containers[2].ContainerControl, target.ContainerFromIndex(2));
}
public void Materialize_Should_Create_Containers()
{
var items = new[] { "foo", "bar", "baz" };
var owner = new Decorator();
var target = new ItemContainerGenerator(owner);
var containers = Materialize(target, 0, items);
var result = containers
.Select(x => x.ContainerControl)
.OfType<ContentPresenter>()
.Select(x => x.Content)
.ToList();
Assert.Equal(items, result);
}
public void InsertSpace_Should_Alter_Successive_Container_Indexes()
{
var items = new[] { "foo", "bar", "baz" };
var owner = new Decorator();
var target = new ItemContainerGenerator(owner);
var containers = Materialize(target, 0, items);
target.InsertSpace(1, 3);
Assert.Equal(3, target.Containers.Count());
Assert.Equal(new[] { 0, 4, 5 }, target.Containers.Select(x => x.Index));
}
public void Style_Binding_Should_Be_Able_To_Override_Content_Typed()
{
var owner = new Decorator();
var target = new ItemContainerGenerator<ListBoxItem>(owner, ListBoxItem.ContentProperty, null);
var container = (ListBoxItem)target.Materialize(0, "foo", null).ContainerControl;
Assert.Equal("foo", container.Content);
container.Bind(
ContentPresenter.ContentProperty,
Observable.Never<object>().StartWith("bar"),
BindingPriority.Style);
Assert.Equal("bar", container.Content);
}
public void RemoveRange_Should_Alter_Successive_Container_Indexes()
{
var items = new[] { "foo", "bar", "baz" };
var owner = new Decorator();
var target = new ItemContainerGenerator(owner);
var containers = Materialize(target, 0, items);
var removed = target.RemoveRange(1, 1).Single();
Assert.Equal(containers[0].ContainerControl, target.ContainerFromIndex(0));
Assert.Equal(containers[2].ContainerControl, target.ContainerFromIndex(1));
Assert.Equal(containers[1], removed);
Assert.Equal(new[] { 0, 1 }, target.Containers.Select(x => x.Index));
}
/// <summary>
/// Creates the <see cref="ItemContainerGenerator"/> for the control.
/// </summary>
/// <returns>
/// An <see cref="IItemContainerGenerator"/> or null.
/// </returns>
protected virtual IItemContainerGenerator CreateItemContainerGenerator()
{
var i = TemplatedParent as ItemsControl;
var result = i?.ItemContainerGenerator;
if (result == null)
{
result = new ItemContainerGenerator(this);
result.ItemTemplate = ItemTemplate;
}
return result;
}
