public void Should_Bind_To_Element()
{
TextBlock source;
ContentControl target;
var root = new TestRoot
{
Child = new StackPanel
{
Children = new Controls.Controls
{
(source = new TextBlock
{
Name = "source",
Text = "foo",
}),
(target = new ContentControl
{
Name = "target",
})
}
}
};
var binding = new Binding
{
ElementName = "source",
};
binding.Bind(target, ContentControl.ContentProperty);
Assert.Same(source, target.Content);
}
/// <summary>
/// The default template for a <see cref="ContentControl"/> control.
/// </summary>
/// <param name="control">The control being styled.</param>
/// <returns>The root of the instantiated template.</returns>
public static Control Template(ContentControl control)
{
return new ContentPresenter
{
Name = "contentPresenter",
[~ContentPresenter.ContentProperty] = control[~ContentControl.ContentProperty],
};
}
public void Clearing_Content_Should_Clear_Child_Controls_Parent()
{
var target = new ContentControl();
var child = new Control();
target.Content = child;
target.Content = null;
Assert.Null(child.Parent);
Assert.Null(((ILogical)child).LogicalParent);
}
private Control CreateNestedTemplate(ContentControl control)
{
return new ScrollViewer
{
Template = ControlTemplate.Create<ScrollViewer>(this.CreateTemplate),
Content = new ContentPresenter
{
Name = "this"
}
};
}
/// <summary>
/// The default template for a <see cref="ContentControl"/> control.
/// </summary>
/// <param name="control">The control being styled.</param>
/// <returns>The root of the instantiated template.</returns>
public static Control Template(ContentControl control)
{
return new Border
{
[~Border.BackgroundProperty] = control[~TemplatedControl.BackgroundProperty],
Child = new ContentPresenter
{
Name = "contentPresenter",
[~ContentPresenter.ContentProperty] = control[~ContentControl.ContentProperty],
}
};
}
public void Changing_Content_Should_Update_Presenter()
{
var target = new ContentControl();
target.Template = this.GetTemplate();
target.ApplyTemplate();
target.Content = "Foo";
target.Presenter.ApplyTemplate();
Assert.Equal("Foo", ((TextBlock)target.Presenter.Child).Text);
target.Content = "Bar";
target.Presenter.ApplyTemplate();
Assert.Equal("Bar", ((TextBlock)target.Presenter.Child).Text);
}
public void ScrollViewer_In_Template_Sets_Child_TemplatedParent()
{
var target = new ContentControl
{
Template = ControlTemplate.Create<ContentControl>(this.CreateNestedTemplate),
Content = "Foo",
};
target.ApplyTemplate();
var presenter = target.GetVisualDescendents()
.OfType<ContentPresenter>()
.Single(x => x.Name == "this");
Assert.Equal(target, presenter.TemplatedParent);
}
public void Changing_Content_Should_Fire_LogicalChildren_CollectionChanged()
{
var contentControl = new ContentControl();
var child1 = new Control();
var child2 = new Control();
var called = false;
contentControl.Template = this.GetTemplate();
contentControl.Content = child1;
contentControl.ApplyTemplate();
((ILogical)contentControl).LogicalChildren.CollectionChanged += (s, e) => called = true;
contentControl.Content = child2;
// Need to call ApplyTemplate on presenter for CollectionChanged to be called.
var presenter = contentControl.GetTemplateChildren().Single(x => x.Name == "contentPresenter");
presenter.ApplyTemplate();
Assert.True(called);
}
public void Content_Should_Have_TemplatedParent_Set_To_Null()
{
var target = new ContentControl();
var child = new Border();
target.Template = this.GetTemplate();
target.Content = child;
target.ApplyTemplate();
Assert.Null(child.TemplatedParent);
}
public void Setting_Content_Should_Fire_LogicalChildren_CollectionChanged()
{
var target = new ContentControl();
var child = new Control();
var called = false;
((ILogical)target).LogicalChildren.CollectionChanged += (s, e) =>
called = e.Action == NotifyCollectionChangedAction.Add;
target.Template = this.GetTemplate();
target.Content = child;
target.ApplyTemplate();
// Need to call ApplyTemplate on presenter for LogicalChildren to be updated.
target.Presenter.ApplyTemplate();
Assert.True(called);
}
public void Templated_Children_Should_Be_Styled()
{
using (var ctx = this.RegisterServices())
{
var root = new TestRoot();
var target = new ContentControl();
var styler = new Mock<IStyler>();
Locator.CurrentMutable.Register(() => styler.Object, typeof(IStyler));
target.Content = "Foo";
target.Template = this.GetTemplate();
root.Content = target;
target.ApplyTemplate();
styler.Verify(x => x.ApplyStyles(It.IsAny<ContentControl>()), Times.Once());
styler.Verify(x => x.ApplyStyles(It.IsAny<Border>()), Times.Once());
styler.Verify(x => x.ApplyStyles(It.IsAny<ContentPresenter>()), Times.Once());
styler.Verify(x => x.ApplyStyles(It.IsAny<TextBlock>()), Times.Once());
}
}
public void Template_Should_Be_Instantiated()
{
using (var ctx = this.RegisterServices())
{
var target = new ContentControl();
target.Content = "Foo";
target.Template = this.GetTemplate();
target.Measure(new Size(100, 100));
var child = ((IVisual)target).VisualChildren.Single();
Assert.IsType<Border>(child);
child = child.VisualChildren.Single();
Assert.IsType<ContentPresenter>(child);
child = child.VisualChildren.Single();
Assert.IsType<TextBlock>(child);
}
}
public void Setting_Content_To_String_Should_Make_TextBlock_Appear_In_LogicalChildren()
{
var target = new ContentControl();
var child = new Control();
target.Template = this.GetTemplate();
target.Content = "Foo";
target.ApplyTemplate();
var logical = (ILogical)target;
Assert.Equal(1, logical.LogicalChildren.Count);
Assert.IsType<TextBlock>(logical.LogicalChildren[0]);
}
public void Setting_Content_To_String_Should_Set_Child_Controls_Parent()
{
var target = new ContentControl
{
Template = this.GetTemplate(),
};
target.Content = "Foo";
target.ApplyTemplate();
var child = target.Presenter.Child;
Assert.Equal(child.Parent, target);
Assert.Equal(((ILogical)child).LogicalParent, target);
}
public void Clearing_Content_Should_Remove_From_LogicalChildren()
{
var target = new ContentControl();
var child = new Control();
target.Template = this.GetTemplate();
target.Content = child;
target.ApplyTemplate();
target.Content = null;
// Need to call ApplyTemplate on presenter for LogicalChildren to be updated.
target.Presenter.ApplyTemplate();
Assert.Empty(target.GetLogicalChildren());
}
public void Setting_Content_To_Control_Should_Make_Control_Appear_In_LogicalChildren()
{
var target = new ContentControl();
var child = new Control();
target.Template = this.GetTemplate();
target.Content = child;
target.ApplyTemplate();
Assert.Equal(new[] { child }, ((ILogical)target).LogicalChildren.ToList());
}
public void ContentPresenter_Should_Have_TemplatedParent_Set()
{
var target = new ContentControl();
var child = new Border();
target.Template = this.GetTemplate();
target.Content = child;
target.ApplyTemplate();
var contentPresenter = child.GetVisualParent<ContentPresenter>();
Assert.Equal(target, contentPresenter.TemplatedParent);
}
public void Clearing_Content_Should_Remove_From_LogicalChildren()
{
var target = new ContentControl();
var child = new Control();
target.Template = this.GetTemplate();
target.Content = child;
target.ApplyTemplate();
target.Content = null;
// Need to call ApplyTemplate on presenter for LogocalChildren to be updated.
var presenter = target.GetTemplateChildren().Single(x => x.Name == "contentPresenter");
presenter.ApplyTemplate();
Assert.Equal(new ILogical[0], ((ILogical)target).LogicalChildren.ToList());
}
public void Clearing_Content_Should_Fire_LogicalChildren_CollectionChanged()
{
var target = new ContentControl();
var child = new Control();
var called = false;
target.Template = this.GetTemplate();
target.Content = child;
target.ApplyTemplate();
((ILogical)target).LogicalChildren.CollectionChanged += (s, e) => called = true;
target.Content = null;
// Need to call ApplyTemplate on presenter for CollectionChanged to be called.
var presenter = target.GetTemplateChildren().Single(x => x.Name == "contentPresenter");
presenter.ApplyTemplate();
Assert.True(called);
}
public void Should_Bind_To_Later_Added_Element()
{
ContentControl target;
StackPanel stackPanel;
var root = new TestRoot
{
Child = stackPanel = new StackPanel
{
Children = new Controls.Controls
{
(target = new ContentControl
{
Name = "target",
}),
}
}
};
var binding = new Binding
{
ElementName = "source",
};
binding.Bind(target, ContentControl.ContentProperty);
var source = new TextBlock
{
Name = "source",
Text = "foo",
};
stackPanel.Children.Add(source);
Assert.Same(source, target.Content);
}
public void GrokysTest()
{
var mainWindowViewModel = new MainWindowViewModel();
var contentControl = new ContentControl();
var synchronizer = new DataContextChangeSynchronizer(new DataContextChangeSynchronizer.BindingSource(new PropertyPath("Content"), mainWindowViewModel), new DataContextChangeSynchronizer.BindingTarget(contentControl, ContentControl.ContentProperty), _repo);
synchronizer.StartUpdatingTargetWhenSourceChanges();
var logInViewModel = new LogInViewModel();
mainWindowViewModel.Content = logInViewModel;
Assert.Equal(logInViewModel, contentControl.Content);
}
