I was willing to use the INC<T> version of the notify property change mecanism, which is much more concise than the Property + Field + RaisePropertyChanged version.
BUT, let say I have this ViewModel:
public abstract class PageViewModel : MvxViewModel
{
/// <summary>
/// The is loading
/// </summary>
public readonly INC<bool> IsLoading = new NC<bool>();
/// <summary>
/// The subtitle
/// </summary>
public readonly INC<string> Subtitle = new NC<string>();
/// <summary>
/// The title
/// </summary>
public readonly INC<string> Title = new NC<string>();
Now, let say I am in my android Activity, and I want to subscribe to these properties :
public partial class MainView : IFragmentHost
{
private void Subscribe(PageViewModel viewModel)
{
viewModel.Title.Changed += (xx) => Whatever;
}
On a second though, it would be nice to WeakSubscribe to them so:
viewModel.Title.WeakSubscri...
Mmmmh weird, I have no autocompletion on that.
Let's see the MvxWeakSubscriptionExtensionMethods:
public static class MvxWeakSubscriptionExtensionMethods
{
public static MvxNotifyPropertyChangedEventSubscription WeakSubscribe(this INotifyPropertyChanged source, EventHandler<PropertyChangedEventArgs> eventHandler)
{
return new MvxNotifyPropertyChangedEventSubscription(source, eventHandler);
}
public static MvxValueEventSubscription<T> WeakSubscribe<T>(this EventInfo eventInfo, object source, EventHandler<MvxValueEventArgs<T>> eventHandler)
{
return new MvxValueEventSubscription<T>(source, eventInfo, eventHandler);
}
And now the INC<T>
public interface INC<T> : INotifyChange<T>, INotifyChange
So, is there a way to weak subscribe to a INC<T> property ?
The plugin itself makes bindings using weak references using:
IDisposable _subscription = NotifyChangeEventInfo.WeakSubscribe(_notifyChange, NotifyChangeOnChanged);
where NotifyChangeOnChanged has signature:
protected abstract void NotifyChangeOnChanged(object sender, EventArgs eventArgs);