public void CanOverrideMetadataPropertyChangedCallback()
{
using (new DefaultImplementationFixture())
{
var raisedParent = new List <IDependencyObject>();
var raisedChild = new List <IDependencyObject>();
var parent = new DependencyObjectFake();
var child = new SecondDependencyObjectFake();
var prop = Dependency.Property.RegisterAttached("AttachedProperty", typeof(string), typeof(DependencyObjectFake), new PropertyMetadata("default", isInherited: true, propertyChangedCallback: (s, e) =>
{
raisedParent.Add(s);
}));
prop.OverrideMetadata(typeof(SecondDependencyObjectFake), new PropertyMetadata("overriden", propertyChangedCallback: (s, e) =>
{
raisedChild.Add(s);
}));
var childInheritanceSource = child.Component.GetValueSource <InheritanceValueSource>();
childInheritanceSource.ParentComponent = parent.Component;
parent.SetValue(prop, "inherited");
Assert.Collection(raisedParent,
x => Assert.Same(parent, x),
x => Assert.Same(child, x));
Assert.Collection(raisedChild,
x => Assert.Same(child, x));
}
}
public void GetAttachedPropertyDefaultValue()
{
using (new DefaultImplementationFixture())
{
var prop = Dependency.Property.RegisterAttached("IsEnabled", typeof(bool), typeof(DependencyObjectFake), new PropertyMetadata(true));
var fake = new SecondDependencyObjectFake();
Assert.True((bool)fake.GetValue(prop));
}
}
public void SetAttachedReadOnlyPropertyValueViaDP()
{
using (new DefaultImplementationFixture())
{
var propKey = Dependency.Property.RegisterAttachedReadOnly("IsEnabled", typeof(bool), typeof(DependencyObjectFake), new PropertyMetadata(true));
var prop = propKey.DependencyProperty;
var fake = new SecondDependencyObjectFake();
Assert.Throws <InvalidOperationException>(() => fake.SetValue(prop, false));
}
}
public void SetAttachedReadOnlyPropertyValueViaDPKey()
{
using (new DefaultImplementationFixture())
{
var propKey = Dependency.Property.RegisterAttachedReadOnly("IsEnabled", typeof(bool), typeof(DependencyObjectFake), new PropertyMetadata(true));
var fake = new SecondDependencyObjectFake();
fake.SetValue(propKey, false);
Assert.False((bool)fake.GetValue(propKey.DependencyProperty));
}
}
public void CanOverrideMetadataDefaultValue()
{
using (new DefaultImplementationFixture())
{
var parent = new DependencyObjectFake();
var child = new SecondDependencyObjectFake();
var prop = Dependency.Property.RegisterAttached("AttachedProperty", typeof(string), typeof(DependencyObjectFake), new PropertyMetadata("default", isInherited: true));
prop.OverrideMetadata(typeof(SecondDependencyObjectFake), new PropertyMetadata("overriden"));
var childInheritanceSource = child.Component.GetValueSource <InheritanceValueSource>();
childInheritanceSource.ParentComponent = parent.Component;
Assert.Equal("default", parent.GetValue(prop));
Assert.Equal("overriden", child.GetValue(prop));
}
}