public CreateFolderViewModel(CreateFolderState state, ICloudViewModel owner, ICloud provider)
{
_path = owner
.WhenAnyValue(x => x.CurrentPath)
.ToProperty(this, x => x.Path);
this.ValidationRule(
x => x.Name,
name => !string.IsNullOrWhiteSpace(name),
"Folder name shouldn't be empty.");
var pathRule = this.ValidationRule(
x => x.Path,
path => !string.IsNullOrWhiteSpace(path),
"Path shouldn't be empty");
Create = ReactiveCommand.CreateFromTask(
() => provider.CreateFolder(Path, Name),
this.IsValid());
_isLoading = Create.IsExecuting
.ToProperty(this, x => x.IsLoading);
var canInteract = owner
.WhenAnyValue(x => x.CanInteract)
.Skip(1)
.StartWith(true);
var canOpen = this
.WhenAnyValue(x => x.IsVisible)
.Select(visible => !visible)
.CombineLatest(
canInteract,
pathRule.WhenAnyValue(x => x.IsValid),
(visible, interact, path) => visible && provider.CanCreateFolder && interact && path);
var canClose = this
.WhenAnyValue(x => x.IsVisible)
.Select(visible => visible);
Open = ReactiveCommand.Create(() => { }, canOpen);
Close = ReactiveCommand.Create(() => { }, canClose);
Open.Select(unit => true)
.Merge(Close.Select(unit => false))
.Subscribe(visible => IsVisible = visible);
Close.Subscribe(x => Name = string.Empty);
Create.InvokeCommand(Close);
_hasErrorMessage = Create
.ThrownExceptions
.Select(exception => true)
.Merge(Close.Select(unit => false))
.ToProperty(this, x => x.HasErrorMessage);
_errorMessage = Create
.ThrownExceptions
.Select(exception => exception.Message)
.Log(this, $"Create folder error occured in {provider.Name}")
.Merge(Close.Select(unit => string.Empty))
.ToProperty(this, x => x.ErrorMessage);
Name = state.Name;
IsVisible = state.IsVisible;
this.WhenAnyValue(x => x.Name)
.Subscribe(name => state.Name = name);
this.WhenAnyValue(x => x.IsVisible)
.Subscribe(visible => state.IsVisible = visible);
}