public void Re_adding_To_Different_LogicalTree_Should_Recreate_Template()
{
using (UnitTestApplication.Start(TestServices.RealStyler))
{
TestTemplatedControl target;
var root = new TestRoot
{
Styles = new Styles
{
new Style(x => x.OfType <TestTemplatedControl>())
{
Setters = new[]
{
new Setter(
TemplatedControl.TemplateProperty,
new FuncControlTemplate(_ => new Decorator
{
Child = new Border(),
}))
}
}
},
Child = target = new TestTemplatedControl()
};
var root2 = new TestRoot
{
Styles = new Styles
{
new Style(x => x.OfType <TestTemplatedControl>())
{
Setters = new[]
{
new Setter(
TemplatedControl.TemplateProperty,
new FuncControlTemplate(_ => new Decorator
{
Child = new Border(),
}))
}
}
},
};
Assert.NotNull(target.Template);
target.ApplyTemplate();
var expected = (Decorator)target.GetVisualChildren().Single();
root.Child = null;
root2.Child = target;
target.ApplyTemplate();
var child = target.GetVisualChildren().Single();
Assert.NotNull(target.Template);
Assert.NotNull(child);
Assert.NotSame(expected, child);
}
}
public void Applying_New_Template_Clears_TemplatedParent_Of_Old_Template_Children()
{
var target = new TestTemplatedControl
{
Template = new FuncControlTemplate(_ => new Decorator
{
Child = new Border(),
})
};
target.ApplyTemplate();
var decorator = (Decorator)target.GetVisualChildren().Single();
var border = (Border)decorator.Child;
Assert.Equal(target, decorator.TemplatedParent);
Assert.Equal(target, border.TemplatedParent);
target.Template = new FuncControlTemplate(_ => new Canvas());
// Templated children should not be removed here: the control may be re-added
// somewhere with the same template, so they could still be of use.
Assert.Same(decorator, target.GetVisualChildren().Single());
Assert.Equal(target, decorator.TemplatedParent);
Assert.Equal(target, border.TemplatedParent);
target.ApplyTemplate();
Assert.Null(decorator.TemplatedParent);
Assert.Null(border.TemplatedParent);
}
public void Applying_New_Template_Clears_TemplatedParent_Of_Old_Template_Children()
{
var target = new TestTemplatedControl
{
Template = new FuncControlTemplate(_ => new Decorator
{
Child = new Border(),
})
};
target.ApplyTemplate();
var decorator = (Decorator)target.GetVisualChildren().Single();
var border = (Border)decorator.Child;
Assert.Equal(target, decorator.TemplatedParent);
Assert.Equal(target, border.TemplatedParent);
target.Template = new FuncControlTemplate(_ => new Canvas());
// Templated children should not be removed here: the control may be re-added
// somewhere with the same template, so they could still be of use.
Assert.Same(decorator, target.GetVisualChildren().Single());
Assert.Equal(target, decorator.TemplatedParent);
Assert.Equal(target, border.TemplatedParent);
target.ApplyTemplate();
Assert.Null(decorator.TemplatedParent);
Assert.Null(border.TemplatedParent);
}
public void Removing_From_LogicalTree_Should_Not_Remove_Child()
{
using (UnitTestApplication.Start(TestServices.RealStyler))
{
Border templateChild = new Border();
TestTemplatedControl target;
var root = new TestRoot
{
Styles = new Styles
{
new Style(x => x.OfType <TestTemplatedControl>())
{
Setters = new[]
{
new Setter(
TemplatedControl.TemplateProperty,
new FuncControlTemplate(_ => new Decorator
{
Child = new Border(),
}))
}
}
},
Child = target = new TestTemplatedControl()
};
Assert.NotNull(target.Template);
target.ApplyTemplate();
root.Child = null;
Assert.Null(target.Template);
Assert.IsType <Decorator>(target.GetVisualChildren().Single());
}
}
public void Moving_To_New_LogicalTree_Should_Detach_Attach_Template_Child()
{
using (UnitTestApplication.Start(TestServices.RealStyler))
{
TestTemplatedControl target;
var root = new TestRoot
{
Child = target = new TestTemplatedControl
{
Template = new FuncControlTemplate(_ => new Decorator()),
}
};
Assert.NotNull(target.Template);
target.ApplyTemplate();
var templateChild = (ILogical)target.GetVisualChildren().Single();
Assert.True(templateChild.IsAttachedToLogicalTree);
root.Child = null;
Assert.False(templateChild.IsAttachedToLogicalTree);
var newRoot = new TestRoot {
Child = target
};
Assert.True(templateChild.IsAttachedToLogicalTree);
}
}
public void Re_adding_To_Different_LogicalTree_Should_Recreate_Template()
{
using (UnitTestApplication.Start(TestServices.RealStyler))
{
TestTemplatedControl target;
var root = new TestRoot
{
Styles = new Styles
{
new Style(x => x.OfType<TestTemplatedControl>())
{
Setters = new[]
{
new Setter(
TemplatedControl.TemplateProperty,
new FuncControlTemplate(_ => new Decorator
{
Child = new Border(),
}))
}
}
},
Child = target = new TestTemplatedControl()
};
var root2 = new TestRoot
{
Styles = new Styles
{
new Style(x => x.OfType<TestTemplatedControl>())
{
Setters = new[]
{
new Setter(
TemplatedControl.TemplateProperty,
new FuncControlTemplate(_ => new Decorator
{
Child = new Border(),
}))
}
}
},
};
Assert.NotNull(target.Template);
target.ApplyTemplate();
var expected = (Decorator)target.GetVisualChildren().Single();
root.Child = null;
root2.Child = target;
target.ApplyTemplate();
var child = target.GetVisualChildren().Single();
Assert.NotNull(target.Template);
Assert.NotNull(child);
Assert.NotSame(expected, child);
}
}
public void Removing_From_LogicalTree_Should_Not_Remove_Child()
{
using (UnitTestApplication.Start(TestServices.RealStyler))
{
Border templateChild = new Border();
TestTemplatedControl target;
var root = new TestRoot
{
Styles = new Styles
{
new Style(x => x.OfType<TestTemplatedControl>())
{
Setters = new[]
{
new Setter(
TemplatedControl.TemplateProperty,
new FuncControlTemplate(_ => new Decorator
{
Child = new Border(),
}))
}
}
},
Child = target = new TestTemplatedControl()
};
Assert.NotNull(target.Template);
target.ApplyTemplate();
root.Child = null;
Assert.Null(target.Template);
Assert.IsType<Decorator>(target.GetVisualChildren().Single());
}
}
