public virtual void Bind(T target, object source)
{
INotifyPropertyChanged propertyChanged = source as INotifyPropertyChanged;
if (propertyChanged != null)
{
ItemsBinder <T> .TargetDictionary targetDictionary = (ItemsBinder <T> .TargetDictionary)null;
if (!this._sources.TryGetValue(source, out targetDictionary))
{
targetDictionary = new ItemsBinder <T> .TargetDictionary();
this._sources.Add(source, targetDictionary);
}
ItemsBinder <T> .TargetEventListener targetEventListener = (ItemsBinder <T> .TargetEventListener)null;
if (!targetDictionary.TryGetValue(target, out targetEventListener))
{
targetEventListener = new ItemsBinder <T> .TargetEventListener(this);
targetEventListener.OnEventAction = (Action <ItemsBinder <T>, object, PropertyChangedEventArgs>)((instance, sender, eventArgs) => instance.SourcePropertyChanged(sender, eventArgs));
targetEventListener.OnDetachAction = (Action <WeakEventListener <ItemsBinder <T>, object, PropertyChangedEventArgs> >)(weakEventListener => propertyChanged.PropertyChanged -= new PropertyChangedEventHandler(weakEventListener.OnEvent));
propertyChanged.PropertyChanged += new PropertyChangedEventHandler(((WeakEventListener <ItemsBinder <T>, object, PropertyChangedEventArgs>)targetEventListener).OnEvent);
targetDictionary.Add(target, targetEventListener);
}
}
this.CallUpdateTarget(target, source, (string)null);
}
private void SourcePropertyChanged(object sender, PropertyChangedEventArgs e)
{
ItemsBinder <T> .TargetDictionary targetDictionary = (ItemsBinder <T> .TargetDictionary)null;
if (!this._sources.TryGetValue(sender, out targetDictionary))
{
return;
}
foreach (T target in targetDictionary.Keys)
{
this.CallUpdateTarget(target, sender, e.PropertyName);
}
}
public virtual void Unbind(T target, object source)
{
ItemsBinder <T> .TargetDictionary targetDictionary = (ItemsBinder <T> .TargetDictionary)null;
if (!this._sources.TryGetValue(source, out targetDictionary))
{
return;
}
ItemsBinder <T> .TargetEventListener targetEventListener = (ItemsBinder <T> .TargetEventListener)null;
if (targetDictionary.TryGetValue(target, out targetEventListener))
{
targetEventListener.Detach();
targetDictionary.Remove(target);
}
if (targetDictionary.Count != 0)
{
return;
}
this._sources.Remove(source);
}
public TargetEventListener(ItemsBinder <T> binder)
: base(binder)
{
}
