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Update ReactiveUI Example

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This commit is contained in:
Chris Pulman
2024-07-28 12:23:09 +01:00
parent e90213a126
commit a225b421c8
7 changed files with 188 additions and 246 deletions
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77
ReactiveExample/LoginViewModel.cs
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@@ -5,7 +5,7 @@ using System.Reactive.Linq;
using System.Runtime.Serialization;
using System.Threading.Tasks;
using ReactiveUI;
using ReactiveUI.Fody.Helpers;
using ReactiveUI.SourceGenerators;
namespace ReactiveExample;
@@ -21,41 +21,53 @@ namespace ReactiveExample;
// See also: https://www.reactiveui.net../docs/handbook/data-persistence/
//
[DataContract]
public class LoginViewModel : ReactiveObject
public partial class LoginViewModel : ReactiveObject
{
private readonly ObservableAsPropertyHelper<bool> _isValid;
private readonly ObservableAsPropertyHelper<int> _passwordLength;
private readonly ObservableAsPropertyHelper<int> _usernameLength;
[IgnoreDataMember]
[ObservableAsProperty] private bool _isValid;
[IgnoreDataMember]
[ObservableAsProperty] private int _passwordLength;
[IgnoreDataMember]
[ObservableAsProperty] private int _usernameLength;
[DataMember]
[Reactive] private string _password = string.Empty;
[DataMember]
[Reactive] private string _username = string.Empty;
public LoginViewModel ()
{
IObservable<bool> canLogin = this.WhenAnyValue (
x => x.Username,
x => x.Password,
(username, password) =>
!string.IsNullOrEmpty (username) && !string.IsNullOrEmpty (password)
);
InitializeCommands ();
IObservable<bool> canLogin = this.WhenAnyValue
(
x => x.Username,
x => x.Password,
(username, password) =>
!string.IsNullOrEmpty (username) && !string.IsNullOrEmpty (password)
);
_isValid = canLogin.ToProperty (this, x => x.IsValid);
_isValidHelper = canLogin.ToProperty (this, x => x.IsValid);
Login = ReactiveCommand.CreateFromTask<CancelEventArgs> (
e => Task.Delay (TimeSpan.FromSeconds (1)),
canLogin
);
Login = ReactiveCommand.CreateFromTask<HandledEventArgs>
(
e => Task.Delay (TimeSpan.FromSeconds (1)),
canLogin
);
_usernameLength = this
_usernameLengthHelper = this
.WhenAnyValue (x => x.Username)
.Select (name => name.Length)
.ToProperty (this, x => x.UsernameLength);
_passwordLength = this
_passwordLengthHelper = this
.WhenAnyValue (x => x.Password)
.Select (password => password.Length)
.ToProperty (this, x => x.PasswordLength);
Clear = ReactiveCommand.Create<CancelEventArgs> (e => { });
Clear.Subscribe (
ClearCommand.Subscribe (
unit =>
{
Username = string.Empty;
@@ -64,26 +76,9 @@ public class LoginViewModel : ReactiveObject
);
}
[IgnoreDataMember]
public ReactiveCommand<CancelEventArgs, Unit> Clear { get; }
[ReactiveCommand]
public void Clear (HandledEventArgs args) { }
[IgnoreDataMember]
public bool IsValid => _isValid.Value;
[IgnoreDataMember]
public ReactiveCommand<CancelEventArgs, Unit> Login { get; }
[Reactive]
[DataMember]
public string Password { get; set; } = string.Empty;
[IgnoreDataMember]
public int PasswordLength => _passwordLength.Value;
[Reactive]
[DataMember]
public string Username { get; set; } = string.Empty;
[IgnoreDataMember]
public int UsernameLength => _usernameLength.Value;
public ReactiveCommand<HandledEventArgs, Unit> Login { get; }
}