public WeakCollectionViewWrapper(T innerCollection)
{
this.innerCollection = innerCollection;
var currentChangedListener = new WeakEventListener <WeakCollectionViewWrapper <T>, object, EventArgs>(this)
{
OnEventAction =
(instance, source, eventArgs) =>
instance.OnCurrentChanged(eventArgs),
OnDetachAction =
listener => innerCollection.CurrentChanged -= listener.OnEvent
};
innerCollection.CurrentChanged += currentChangedListener.OnEvent;
var currentChangingListener = new WeakEventListener <WeakCollectionViewWrapper <T>, object, CurrentChangingEventArgs>(this)
{
OnEventAction =
(instance, source, eventArgs) =>
instance.OnCurrentChanging(eventArgs),
OnDetachAction =
listener => innerCollection.CurrentChanging -= listener.OnEvent
};
innerCollection.CurrentChanging += currentChangingListener.OnEvent;
var propertyChangedListener = new WeakEventListener <WeakCollectionViewWrapper <T>, object, NotifyCollectionChangedEventArgs>(this)
{
OnEventAction =
(instance, source, eventArgs) =>
instance.OnCollectionChanged(eventArgs),
OnDetachAction =
listener => innerCollection.CollectionChanged -= listener.OnEvent
};
innerCollection.CollectionChanged += propertyChangedListener.OnEvent;
var enquireAboutItemVisibility = innerCollection as IEnquireAboutItemVisibility;
if (enquireAboutItemVisibility != null)
{
var queryItemVisibilityListener =
new WeakEventListener <WeakCollectionViewWrapper <T>, object, QueryItemVisibilityEventArgs>(this)
{
OnEventAction =
(instance, source, eventArgs) =>
instance.OnQueryItemVisibility(eventArgs),
OnDetachAction =
listener => enquireAboutItemVisibility.QueryItemVisibility -= listener.OnEvent
};
enquireAboutItemVisibility.QueryItemVisibility += queryItemVisibilityListener.OnEvent;
}
}
private static void AttachObservableModelCallback(DependencyObject source, DependencyPropertyChangedEventArgs args)
{
var typeName = args.NewValue as string;
var view = source as FrameworkElement;
if (typeName == null || view == null)
{
return;
}
var modelType = Type.GetType("Raven.Studio.Models." + typeName) ?? Type.GetType(typeName);
if (modelType == null)
{
return;
}
try
{
var model = (Model)Activator.CreateInstance(modelType);
model.ForceTimerTicked();
var observable = (IObservable)Activator.CreateInstance(typeof(Observable <>).MakeGenericType(modelType));
observable.Value = model;
view.DataContext = observable;
SetPageTitle(model, view);
var weakListener = new WeakEventListener <IObservable, object, RoutedEventArgs>(observable);
view.Loaded += weakListener.OnEvent;
weakListener.OnEventAction = OnViewLoaded;
weakListener.OnDetachAction = listener => view.Loaded -= listener.OnEvent;
}
catch (Exception ex)
{
throw new InvalidOperationException(string.Format("Cannot create instance of model type: {0}", modelType), ex);
}
}