private void Subscribe()
{
INotifyPropertyChanged subject = this.Subject;
if (subject == null)
{
return;
}
for (int i = 0; i < this.AccessNode.Children.Count; i++)
{
PropertyAccessNode propertyNode = (PropertyAccessNode)this.AccessNode.Children[i];
WeakPropertyChangedEventManager.Register(
subject,
propertyNode.Property.Name,
this,
(me, sender, args) => me.OnPropertyChanged(sender, args));
}
if (this.Children != null)
{
for (int i = 0; i < this.Children.Count; i++)
{
this.Children[i].UpdateSubject(subject);
}
}
}
private void RegisterOnPersonName()
{
WeakPropertyChangedEventManager.Register(
_person,
"Name",
_listener,
(me, sender, args) => me.OnPropertyChanged(sender, args));
}
public void Unsubscribe(
INotifyPropertyChanged subject,
object rootSubject,
TListener listener)
{
WeakPropertyChangedEventManager.Unregister(subject, _propertyAccessNode.PropertyName, listener, rootSubject);
UnsubscribeFromChildren(listener, subject, rootSubject);
}
public void Unregister_MonitoredPropertyChanged_DoesNotFireCallback()
{
RegisterOnPersonName();
WeakPropertyChangedEventManager.Unregister(_person, "Name", _listener, null);
_person.Name = "Bob";
Assert.AreEqual(0, _listener.CallCount);
}
public void Subscribe(INotifyPropertyChanged subject, object rootSubject, TListener listener)
{
WeakPropertyChangedEventManager.Register(
subject,
rootSubject,
_propertyAccessNode.PropertyName,
listener,
_onChangingCallback,
_onChangedCallback);
SubscribeToChildren(listener, subject, rootSubject);
}
public void Test()
{
// Collection with 1 item to make this test simple
Items = new ContinuousCollection <NotifiableItem>
{
new NotifiableItem {
TestValue1 = 3, TestValue2 = 10
},
};
// Start with TestValue1
MaxValueCV = Items.ContinuousMax(item => item.TestValue1, value => Max = value);
Console.WriteLine("MaxValueCV = " + MaxValueCV.CurrentValue);
Console.WriteLine("Max = " + Max);
Console.WriteLine();
// Switch to TestValue2
MaxValueCV = Items.ContinuousMax(item => item.TestValue2, value => Max = value);
Console.WriteLine("MaxValueCV = " + MaxValueCV.CurrentValue);
Console.WriteLine("Max = " + Max);
Console.WriteLine();
GC.Collect();
WeakPropertyChangedEventManager.RemoveCollectedEntries();
GC.Collect();
// Now set TestValue1
Items[0].TestValue1 = 20;
Console.WriteLine("(BUG)");
Console.WriteLine("MaxValueCV = " + MaxValueCV.CurrentValue);
// BUG: Max is set to 20 when it should be 10
Console.WriteLine("Max = " + Max);
Assert.AreEqual(10, Max);
Console.Write("Hit enter to continue...");
Console.ReadLine();
}
private void Unsubscribe()
{
INotifyPropertyChanged subject = this.Subject;
if (subject == null)
{
return;
}
for (int i = 0; i < this.AccessNode.Children.Count; i++)
{
PropertyAccessNode propertyNode = (PropertyAccessNode)this.AccessNode.Children[i];
WeakPropertyChangedEventManager.Unregister(subject, propertyNode.Property.Name, this, null);
}
if (this.Children != null)
{
for (int i = 0; i < this.Children.Count; i++)
{
this.Children[i].Unsubscribe();
}
}
}
public void CleanupReferences()
{
RegisterOnPersonName();
WeakReference personRef = new WeakReference(_person);
_person = null;
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
Assert.IsFalse(personRef.IsAlive);
WeakPropertyChangedEventManager.RemoveCollectedEntries();
for (int i = 0; i < 10; i++)
{
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
WeakPropertyChangedEventManager.RemoveCollectedEntries();
}
Assert.AreEqual(0, WeakPropertyChangedEventManager.SourceToBridgeTable.Count);
}
