public static ViewModel.InteractiveCollectionViewModel <T, object> Build <T>(Func <T, object> getkey, IObservable <IEnumerable <T> > elems, IObservable <IFilter> filter, IObservable <T> DeletedSubject, IObservable <object> ClearedSubject, System.Reactive.Concurrency.DispatcherScheduler UI, IObservable <Func <T, object> > getkeys = null, bool isReadOnly = false)
{
var dx = Observable.Create <string>(_ => () => { });
ViewModel.InteractiveCollectionViewModel <T, object> interactivecollection = null;
ISubject <Exception> exs = new Subject <Exception>();
var sx = ObservableChangeSet.Create(cache =>
{
var dels = DeletedSubject /*.WithLatestFrom(RemoveSubject.StartWith(Remove).DistinctUntilChanged(), (d, r) => new { d, r })*/.Subscribe(_ =>
{
try
{
cache.Remove(_);
}
catch (Exception ex)
{
Console.WriteLine("error removing " + _.ToString() + " from cache");
Console.WriteLine(ex.Message);
exs.OnNext(ex);
//ArgumentNullException
}
});
ClearedSubject.Subscribe(_ => cache.Clear());
elems.Subscribe(_ =>
{
foreach (var g in _)
{
try
{
cache.AddOrUpdate(g);
}
catch (Exception ex)
{
Console.WriteLine("error adding " + g.ToString() + " from cache");
Console.WriteLine(ex);
exs.OnNext(ex);
}
}
});
return(new System.Reactive.Disposables.CompositeDisposable(dels));
}, getkey)
.Filter(filter.Select(_ => { Func <T, bool> f = aa => _.Filter(aa); return(f); }).StartWith(ft));
getkeys?.Subscribe(_ =>
{
sx.ChangeKey(_);
});
interactivecollection = new ViewModel.InteractiveCollectionViewModel <T, object>(sx, UI, DeletedSubject, _ => (IConvertible)getkey(_));
exs.Subscribe(ex =>
(interactivecollection.Errors as System.Reactive.Subjects.ISubject <Exception>).OnNext(ex));
return(interactivecollection);
}
private void Init()
{
var key = KeySubject.DistinctUntilChanged().Merge(ItemsSourceSubject.Take(1)
.Select(_ => GetKey(_))
.Where(_ => _ != null)).DistinctUntilChanged();
Build(ItemsSourceSubject.Select(v => v.Cast <object>()), key).Subscribe(a_ =>
{
this.Dispatcher.InvokeAsync(() =>
{
interactivecollection = a_;
CollectionChanged();
},
System.Windows.Threading.DispatcherPriority.Background, default(System.Threading.CancellationToken));
});
}
public ListBoxEx(Func <object, object> _keyfunc)
{
Uri resourceLocater = new Uri("/UtilityWpf.View;component/Themes/ListBoxEx.xaml", System.UriKind.Relative);
ResourceDictionary resourceDictionary = (ResourceDictionary)Application.LoadComponent(resourceLocater);
Style = resourceDictionary["ListBoxExStyle"] as Style;
UI = new System.Reactive.Concurrency.DispatcherScheduler(Application.Current.Dispatcher);
//_.GetType().GetProperty("Object").GetValue(_)
interactivecollection = ViewModel.InteractiveCollectionFactory.Build(
_ => _keyfunc(_),//UtilityHelper.PropertyHelper.GetPropValue<object>(_,"Object")),
ItemsSourceSubject.Select(v => v.Cast <object>()),
FilterSubject,
DeletedSubject.WithLatestFrom(RemoveSubject.StartWith(Remove).DistinctUntilChanged(), (d, r) => r ? d : null).Where(v => v != null),
ClearedSubject,
UI, null, IsReadOnly
);
CollectionChanged();
Init();
}
public ListBoxEx()
{
Uri resourceLocater = new Uri("/UtilityWpf.View;component/Themes/ListBoxEx.xaml", System.UriKind.Relative);
ResourceDictionary resourceDictionary = (ResourceDictionary)Application.LoadComponent(resourceLocater);
Style = resourceDictionary["ListBoxExStyle"] as Style;
UI = new System.Reactive.Concurrency.DispatcherScheduler(Application.Current.Dispatcher);
if (Key != null)
{
interactivecollection = ViewModel.InteractiveCollectionFactory.Build(
GetKeyFunc(Key),
ItemsSourceSubject.Select(v => v.Cast <object>()),
FilterSubject,
DeletedSubject.WithLatestFrom(RemoveSubject.StartWith(Remove).DistinctUntilChanged(), (d, r) => r ? d : null).Where(v => v != null),
ClearedSubject,
UI, null, IsReadOnly
);
CollectionChanged();
}
Init();
}
public virtual ViewModel.InteractiveCollectionViewModel <object, IConvertible> React(/*string key,*/ string childrenpath, IEnumerable enumerable, IObservable <bool> ischecked, System.Reactive.Concurrency.DispatcherScheduler UI, System.Windows.Threading.Dispatcher dispatcher)
{
var sx = ObservableChangeSet.Create <object, IConvertible>(cache =>
{
foreach (var val in enumerable)
{
cache.AddOrUpdate(val);
}
return(System.Reactive.Disposables.Disposable.Empty);
}, GetKey);
var kx = new ViewModel.InteractiveCollectionViewModel <object, IConvertible>(sx, ChildrenPath, ischecked, ExpandSubject.StartWith(Expand).DistinctUntilChanged(), UI, dispatcher);
kx.GetChecked();
kx.GetSelectedItem(ischecked).Subscribe(_ =>
{
this.Dispatcher.InvokeAsync(() => SelectedItem = _, System.Windows.Threading.DispatcherPriority.Background, default(System.Threading.CancellationToken));
});
kx.GetCheckedChildItems(ischecked, childrenpath).Subscribe(_ =>
{
this.Dispatcher.InvokeAsync(() => CheckedItems = _, System.Windows.Threading.DispatcherPriority.Background, default(System.Threading.CancellationToken));
});
AllCheckedItems = kx.@checked;
//kx.GetSelected().WithLatestFrom(ischecked,(a,b)=>new { a, b }).Subscribe(_=>
//{
// if (@checked.Contains(_) || _.b==false)
// {
// this.Dispatcher.InvokeAsync(() => SelectedItem = _.a, System.Windows.Threading.DispatcherPriority.Background, default(System.Threading.CancellationToken));
// this.Dispatcher.InvokeAsync(() => CheckedItems = ReflectionHelper.RecursivePropValues(_.a, childrenpath).Cast<object>().Where(a => @checked.Contains(a)).ToList(), System.Windows.Threading.DispatcherPriority.Background, default(System.Threading.CancellationToken));
// }
//});
//kx.ChildSubject.Where(_=>_.Value.Interaction==Interaction.Select &&((int) _.Value.Value)>0).WithLatestFrom(ischecked, (a, b) => new { a, b }).Subscribe(_ =>
//{
// if (@checked.Contains(_.a.Key) || _.b == false)
// {
// this.Dispatcher.InvokeAsync(() => SelectedItem = _.a.Key, System.Windows.Threading.DispatcherPriority.Background, default(System.Threading.CancellationToken));
// this.Dispatcher.InvokeAsync(() => CheckedItems = ReflectionHelper.RecursivePropValues(_.a.Key, childrenpath).Cast<object>().Where(a => @checked.Contains(a)).ToList(), System.Windows.Threading.DispatcherPriority.Background, default(System.Threading.CancellationToken));
// }
//});
//kx.ChildSubject.Where(_ => _.Value.Interaction == Interaction.Check).Subscribe(_ =>
//{
// if (!((bool)_.Value.Value))
// if (@checked.Contains(_.Key))
// {
// @checked.Remove(_.Key);
// this.Dispatcher.InvokeAsync(() => SelectedItem = null, System.Windows.Threading.DispatcherPriority.Background, default(System.Threading.CancellationToken));
// this.Dispatcher.InvokeAsync(() => CheckedItems = null, System.Windows.Threading.DispatcherPriority.Background, default(System.Threading.CancellationToken));
// }
// else if (((bool)_.Value.Value))
// if (@unchecked.Contains(_.Key))
// {
// @unchecked.Remove(_.Key);
// this.Dispatcher.InvokeAsync(() => SelectedItem = _.Key, System.Windows.Threading.DispatcherPriority.Background, default(System.Threading.CancellationToken));
// this.Dispatcher.InvokeAsync(() => CheckedItems = ReflectionHelper.RecursivePropValues(_.Key, childrenpath).Cast<object>().Where(a => @checked.Contains(a)).ToList(), System.Windows.Threading.DispatcherPriority.Background, default(System.Threading.CancellationToken));
// }
//});
//kx.DoubleClicked.Subscribe(_ =>
//{
// this.Dispatcher.InvokeAsync(() => DoubleClickedItem = _, System.Windows.Threading.DispatcherPriority.Background, default(System.Threading.CancellationToken));
//});
//SelectedItemSubject.Subscribe(_ =>
//kx.Deleted.Subscribe(_ =>
//{
// this.Dispatcher.InvokeAsync(() => Deleted = _, System.Windows.Threading.DispatcherPriority.Background, default(System.Threading.CancellationToken));
//});
return(kx);
}
