public void Panel_TabNavigation_Should_Be_Set_To_Once()
{
var target = new ItemsPresenter();
target.ApplyTemplate();
Assert.Equal(KeyboardNavigationMode.Once, KeyboardNavigation.GetTabNavigation(target.Panel));
}
public void Panel_TemplatedParent_Should_Be_Set()
{
var target = new ItemsPresenter();
target.ApplyTemplate();
Assert.Equal(target, target.Panel.TemplatedParent);
}
public void Panel_TabNavigation_Should_Be_Set_To_ItemsPresenter_Value()
{
var target = new ItemsPresenter();
KeyboardNavigation.SetTabNavigation(target, KeyboardNavigationMode.Cycle);
target.ApplyTemplate();
Assert.Equal(KeyboardNavigationMode.Cycle, KeyboardNavigation.GetTabNavigation((InputElement)target.Panel));
}
public void Should_Register_With_Host_When_TemplatedParent_Set()
{
var host = new Mock<IItemsPresenterHost>();
var target = new ItemsPresenter();
target.SetValue(Control.TemplatedParentProperty, host.Object);
host.Verify(x => x.RegisterItemsPresenter(target));
}
public void ItemContainerGenerator_Should_Be_Picked_Up_From_TemplatedControl()
{
var parent = new TestItemsControl();
var target = new ItemsPresenter
{
TemplatedParent = parent,
};
Assert.IsType<ItemContainerGenerator<TestItem>>(target.ItemContainerGenerator);
}
public void Panel_Should_Be_Visual_Child()
{
var target = new ItemsPresenter();
target.ApplyTemplate();
var child = target.GetVisualChildren().Single();
Assert.Equal(target.Panel, child);
}
public void Items_Should_Be_Created_On_ApplyTemplate()
{
var target = new ItemsPresenter
{
Items = new[] { "foo", "bar" },
};
target.ApplyTemplate();
Assert.Equal(2, target.Panel.GetVisualChildren().Count());
}
public void Clearing_Items_Should_Remove_Containers()
{
var target = new ItemsPresenter
{
Items = new[] { "foo", "bar" },
};
target.ApplyTemplate();
target.Items = null;
Assert.Empty(target.Panel.Children);
}
public void Panel_Should_Be_Created_From_ItemsPanel_Template()
{
var panel = new Panel();
var target = new ItemsPresenter
{
ItemsPanel = new FuncTemplate<IPanel>(() => panel),
};
target.ApplyTemplate();
Assert.Equal(panel, target.Panel);
}
public void Should_Add_Containers_Of_Correct_Type()
{
var target = new ItemsPresenter
{
Items = new[] { "foo", "bar" },
};
target.ItemContainerGenerator = new ItemContainerGenerator<ListBoxItem>(target);
target.ApplyTemplate();
Assert.Equal(2, target.Panel.Children.Count);
Assert.IsType<ListBoxItem>(target.Panel.Children[0]);
Assert.IsType<ListBoxItem>(target.Panel.Children[1]);
}
public void Clearing_Items_Should_Remove_Containers()
{
var items = new ObservableCollection<string> { "foo", "bar" };
var target = new ItemsPresenter
{
Items = items,
};
target.ApplyTemplate();
items.Clear();
Assert.Empty(target.Panel.Children);
Assert.Empty(target.ItemContainerGenerator.Containers);
}
public void Should_Remove_Containers()
{
var items = new PerspexList<string>(new[] { "foo", "bar" });
var target = new ItemsPresenter
{
Items = items,
};
target.ApplyTemplate();
items.RemoveAt(0);
Assert.Equal(1, target.Panel.Children.Count);
Assert.Equal("bar", ((TextBlock)target.Panel.Children[0]).Text);
}
public void Should_Add_Containers()
{
var target = new ItemsPresenter
{
Items = new[] { "foo", "bar" },
};
target.ApplyTemplate();
Assert.Equal(2, target.Panel.Children.Count);
Assert.IsType<TextBlock>(target.Panel.Children[0]);
Assert.IsType<TextBlock>(target.Panel.Children[1]);
Assert.Equal("foo", ((TextBlock)target.Panel.Children[0]).Text);
Assert.Equal("bar", ((TextBlock)target.Panel.Children[1]).Text);
}
public void MemberSelector_Should_Select_Member()
{
var target = new ItemsPresenter
{
Items = new[] { new Item("Foo"), new Item("Bar") },
MemberSelector = new FuncMemberSelector<Item, string>(x => x.Value),
};
target.ApplyTemplate();
var text = target.Panel.Children
.Cast<TextBlock>()
.Select(x => x.Text)
.ToList();
Assert.Equal(new[] { "Foo", "Bar" }, text);
}
public void Setting_Presenter_Explicitly_Should_Set_Item_Parent()
{
var target = new TestItemsControl();
var child = new Control();
var presenter = new ItemsPresenter
{
TemplatedParent = target,
[~ItemsPresenter.ItemsProperty] = target[~ItemsControl.ItemsProperty],
};
presenter.ApplyTemplate();
target.Presenter = presenter;
target.Items = new[] { child };
target.ApplyTemplate();
Assert.Equal(target, child.Parent);
Assert.Equal(target, ((ILogical)child).LogicalParent);
}
public void Moving_Items_Should_Update_Containers()
{
var items = new ObservableCollection<string> { "foo", "bar", "baz" };
var target = new ItemsPresenter
{
Items = items,
};
target.ApplyTemplate();
items.Move(2, 1);
var text = target.Panel.Children
.OfType<TextBlock>()
.Select(x => x.Text)
.ToList();
Assert.Equal(new[] { "foo", "baz", "bar" }, text);
}
public void Should_Handle_Null_Items()
{
var items = new PerspexList<string>(new[] { "foo", null, "bar" });
var target = new ItemsPresenter
{
Items = items,
};
target.ApplyTemplate();
var text = target.Panel.Children.Cast<TextBlock>().Select(x => x.Text).ToList();
Assert.Equal(new[] { "foo", "bar" }, text);
Assert.NotNull(target.ItemContainerGenerator.ContainerFromIndex(0));
Assert.Null(target.ItemContainerGenerator.ContainerFromIndex(1));
Assert.NotNull(target.ItemContainerGenerator.ContainerFromIndex(2));
items.RemoveAt(1);
text = target.Panel.Children.Cast<TextBlock>().Select(x => x.Text).ToList();
Assert.Equal(new[] { "foo", "bar" }, text);
Assert.NotNull(target.ItemContainerGenerator.ContainerFromIndex(0));
Assert.NotNull(target.ItemContainerGenerator.ContainerFromIndex(1));
}
public void Should_Handle_Duplicate_Items()
{
var items = new PerspexList<int>(new[] { 1, 2, 1 });
var target = new ItemsPresenter
{
Items = items,
};
target.ApplyTemplate();
items.RemoveAt(2);
var text = target.Panel.Children.OfType<TextBlock>().Select(x => x.Text);
Assert.Equal(new[] { "1", "2" }, text);
}
public void Setting_Items_To_Null_Should_Remove_Containers()
{
var target = new ItemsPresenter
{
Items = new[] { "foo", "bar" },
};
target.ApplyTemplate();
target.Items = null;
Assert.Empty(target.Panel.Children);
Assert.Empty(target.ItemContainerGenerator.Containers);
}
public void Should_Handle_Null_Items()
{
var items = new PerspexList<string>(new[] { "foo", null, "bar" });
var target = new ItemsPresenter
{
Items = items,
};
target.ApplyTemplate();
var text = target.Panel.Children.OfType<TextBlock>().Select(x => x.Text).ToList();
Assert.Equal(new[] { "foo", "bar" }, text);
items.RemoveAt(1);
text = target.Panel.Children.OfType<TextBlock>().Select(x => x.Text).ToList();
Assert.Equal(new[] { "foo", "bar" }, text);
}