public void IsInstanceOfType()
{
DependencyObjectType t = DependencyObjectType.FromSystemType(typeof(TestDepObj));
DependencyObjectType t2 = DependencyObjectType.FromSystemType(typeof(TestSubclass));
Assert.IsTrue(t.IsInstanceOfType(new TestSubclass()));
Assert.IsTrue(t2.IsSubclassOf(t));
Assert.IsFalse(t.IsSubclassOf(t2));
}
internal FrameworkObject(DependencyObject d)
{
// [code should be identical to Reset(d)]
this.dependencyObject = d;
if (FrameworkElementDType.IsInstanceOfType(d))
{
this.frameworkElement = (FrameworkElement)d;
this.frameworkContentElement = null;
}
else if (FrameworkContentElementDType.IsInstanceOfType(d))
{
this.frameworkElement = null;
this.frameworkContentElement = (FrameworkContentElement)d;
}
else
{
this.frameworkElement = null;
this.frameworkContentElement = null;
}
}
public bool Filter(PropertyDescriptor property)
{
if (this.element == null)
{
return(true);
}
// Filter the 20 stylistic set properties that I've never seen used.
if (property.Name.Contains("Typography.StylisticSet"))
{
return(false);
}
AttachedPropertyBrowsableForChildrenAttribute attachedPropertyForChildren = (AttachedPropertyBrowsableForChildrenAttribute)property.Attributes[typeof(AttachedPropertyBrowsableForChildrenAttribute)];
AttachedPropertyBrowsableForTypeAttribute attachedPropertyForType = (AttachedPropertyBrowsableForTypeAttribute)property.Attributes[typeof(AttachedPropertyBrowsableForTypeAttribute)];
AttachedPropertyBrowsableWhenAttributePresentAttribute attachedPropertyForAttribute = (AttachedPropertyBrowsableWhenAttributePresentAttribute)property.Attributes[typeof(AttachedPropertyBrowsableWhenAttributePresentAttribute)];
if (attachedPropertyForChildren != null)
{
DependencyPropertyDescriptor dpd = DependencyPropertyDescriptor.FromProperty(property);
if (dpd == null)
{
return(false);
}
FrameworkElement element = this.element;
do
{
element = element.Parent as FrameworkElement;
if (element != null && dpd.DependencyProperty.OwnerType.IsInstanceOfType(element))
{
return(true);
}
}while (attachedPropertyForChildren.IncludeDescendants && element != null);
return(false);
}
else if (attachedPropertyForType != null)
{
// when using [AttachedPropertyBrowsableForType(typeof(IMyInterface))] and IMyInterface is not a DependencyObject, Snoop crashes.
// see http://snoopwpf.codeplex.com/workitem/6712
if (attachedPropertyForType.TargetType.IsSubclassOf(typeof(DependencyObject)))
{
DependencyObjectType doType = DependencyObjectType.FromSystemType(attachedPropertyForType.TargetType);
if (doType != null && doType.IsInstanceOfType(this.element))
{
return(true);
}
}
return(false);
}
else if (attachedPropertyForAttribute != null)
{
Attribute dependentAttribute = TypeDescriptor.GetAttributes(this.target)[attachedPropertyForAttribute.AttributeType];
if (dependentAttribute != null)
{
return(!dependentAttribute.IsDefaultAttribute());
}
return(false);
}
return(true);
}
