public void DataContexts_Should_Be_Correctly_Set()
{
var items = new object[]
{
"Foo",
new Item("Bar"),
new TextBlock { Text = "Baz" },
new ListBoxItem { Content = "Qux" },
};
var target = new ListBox
{
Template = new ControlTemplate(CreateListBoxTemplate),
DataContext = "Base",
DataTemplates = new DataTemplates
{
new FuncDataTemplate<Item>(x => new Button { Content = x })
},
Items = items,
};
target.ApplyTemplate();
var dataContexts = target.Presenter.Panel.Children
.Cast<Control>()
.Select(x => x.DataContext)
.ToList();
Assert.Equal(
new object[] { items[0], items[1], "Base", "Base" },
dataContexts);
}
public void Setting_Item_IsSelected_Sets_ListBox_Selection()
{
var target = new ListBox
{
Template = new ControlTemplate(CreateListBoxTemplate),
Items = new[] { "Foo", "Bar", "Baz " },
};
target.ApplyTemplate();
((ListBoxItem)target.GetLogicalChildren().ElementAt(1)).IsSelected = true;
Assert.Equal("Bar", target.SelectedItem);
Assert.Equal(1, target.SelectedIndex);
}
public void LogicalChildren_Should_Be_Set()
{
var target = new ListBox
{
Template = new ControlTemplate(CreateListBoxTemplate),
Items = new[] { "Foo", "Bar", "Baz " },
};
target.ApplyTemplate();
Assert.Equal(3, target.GetLogicalChildren().Count());
foreach (var child in target.GetLogicalChildren())
{
Assert.IsType<ListBoxItem>(child);
}
}
/// <summary>
/// The default template for a <see cref="ListBox"/> control.
/// </summary>
/// <param name="control">The control being styled.</param>
/// <returns>The root of the instantiated template.</returns>
public static Control Template(ListBox control)
{
return new Border
{
Padding = new Thickness(4),
[~Border.BackgroundProperty] = control[~TemplatedControl.BackgroundProperty],
[~Border.BorderBrushProperty] = control[~TemplatedControl.BorderBrushProperty],
[~Border.BorderThicknessProperty] = control[~TemplatedControl.BorderThicknessProperty],
Child = new ScrollViewer
{
Content = new ItemsPresenter
{
Name = "itemsPresenter",
[~ItemsPresenter.ItemsProperty] = control[~ItemsControl.ItemsProperty],
[~ItemsPresenter.ItemsPanelProperty] = control[~ItemsControl.ItemsPanelProperty],
}
}
};
}
private static TabItem ListsTab()
{
ListBox listBox;
return new TabItem
{
Header = "Lists",
Content = new StackPanel
{
DataTemplates = new DataTemplates
{
new DataTemplate<Item>(x =>
new StackPanel
{
Children = new Controls
{
new TextBlock { Text = x.Name, FontSize = 24 },
new TextBlock { Text = x.Value },
}
})
},
Orientation = Orientation.Horizontal,
HorizontalAlignment = HorizontalAlignment.Center,
VerticalAlignment = VerticalAlignment.Center,
Gap = 8,
Children = new Controls
{
new TreeView
{
Name = "treeView",
Items = s_treeData,
},
(listBox = new ListBox
{
Items = s_listBoxData,
MaxHeight = 300,
}),
new DropDown
{
Items = s_listBoxData,
SelectedItem = s_listBoxData[0],
VerticalAlignment = VerticalAlignment.Center,
}
}
},
};
}
