public RepositoryViewModel(IDispatcher dispatcher, IFactory <Profile> profileFactory)
{
UndoCommand = new ReactiveCommand();
AddCommand = new ReactiveCommand <bool>();
NameChangedCommand = new ReactiveCommand <string>();
SelectedContentChangedCommand = new ReactiveCommand <object>();
this.dispatcher = dispatcher;
//Items = new ReactiveCollection<SelectDeleteItem>(Enumerable.Range(0, 10).Select(a => new SelectDeleteItem()).ToObservable()); ;
//var undos = Items.ToCollectionChanged().Select(a => a.Value.Undo.Where(a => a).Select(b => new KeyValuePair<string, SelectDeleteItem>("Undo", a.Value))).SelectMany(a => a);
var deletes = Items.ToCollectionChanged().Select(a => a.Value.Delete.Where(c => c).Select(b => new KeyValuePair <string, SelectDeleteItem>("Delete", a.Value))).SelectMany(a => a);
var selects = Items.ToCollectionChanged().Select(a => a.Value.Select /*.Where(a => a)*/.Select(b => new KeyValuePair <bool, SelectDeleteItem>(b, a.Value))).SelectMany(a => a);
var selects2 = Items.ToCollectionChanged().Where(a => Items.Count == 1).Select(a => Items.Single()).Select(b => new KeyValuePair <bool, SelectDeleteItem>(true, b));
var selects3 = Items.ToCollectionChanged().Where(a => Items.Count == 0 && a.Action == System.Collections.Specialized.NotifyCollectionChangedAction.Add)
.Select(a => a.Value).Select(b => new KeyValuePair <bool, SelectDeleteItem>(true, b));
//selects2.DelaySubscription(TimeSpan.FromSeconds(1)).Subscribe(a =>
//{
//});
//selects3.Subscribe(a =>
//{
//});
this.Deletes = deletes.Select(a => a.Value).ToReactiveCollection();
deletes.Select(a => a.Value).Subscribe(a => Items.Remove(a));
(UndoCommand as ReactiveCommand).Subscribe(a =>
{
if (Deletes.Any())
{
var last = Deletes.Last();
Deletes.Remove(last);
last.Delete.Value = false;
last.Select.Value = Items.Count() == 0;
Items.Add(last);
}
});
//(AddCommand as ReactiveCommand<bool>).Subscribe(a =>
//{
// bool parameter = (bool)a;
// if (!Equals(parameter, true)) return;
// //if (!string.IsNullOrWhiteSpace(FruitTextBox.Text))
// // FruitListBox.Items.Add(FruitTextBox.Text.Trim());
//});
(AddCommand as ReactiveCommand <bool>)
.Where(b => b)
.WithLatestFrom((NameChangedCommand as ReactiveCommand <string>), (bl, text) => text)
.Subscribe(text =>
{
Items.Add(new SelectDeleteItem(profileFactory.Build(text)));
});
SelectedItem = selects.Merge(selects2).Where(a => a.Key).Select(a => a.Value).ToReactiveProperty();
//mode: ReactivePropertyMode.DistinctUntilChanged
selects.Subscribe(a =>
{
if (a.Key)
{
foreach (var x in Items.Where(b => b != a.Value))
{
x.Select.Value = false;
}
}
else if (a.Key == false && SelectedItem.Value == a.Value && Items.Count != 1)
{
this.SelectedItem.Value = null;
}
});
SelectedItem.Subscribe(a =>
{
//this.dispatcher.InvokeAsync(() => this.SelectedItem.Value = a);
});
// For some reason doesn't pick up initial selecteditem
SelectedItem.Where(a => a != null).Take(1).Subscribe(a =>
{
this.dispatcher.InvokeAsync(() => this.SelectedItem.Value = a);
});
(SelectedContentChangedCommand as ReactiveCommand <object>).Subscribe(a =>
{
(SelectedItem.Value.Value as Profile).Steps = (a as Dictionary <object, int>).Select(ba => ba.Key).Cast <Step>().ToArray();
});
}
//public void LoadFromXml(XmlElement xml)
//{
// Inserts.Clear();
// Updates.Clear();
// Deletes.Clear();
// foreach(XmlElement xitem in xml.SelectNodes("Insert"))
// {
// var item = new ChangeSetInsertItem();
// item.LoadFromXml(xitem);
// Inserts.Add(item);
// }
//}
public bool HasChanges()
{
return(Updates.Any() || Inserts.Any() || Deletes.Any());
}