mirror of
https://github.com/GreemDev/Ryujinx.git
synced 2024-12-13 02:31:07 +01:00
71 lines
1.9 KiB
C#
71 lines
1.9 KiB
C#
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using System;
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using System.Threading.Tasks;
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using System.Windows.Input;
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namespace Ryujinx.Ava.Ui.Models
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{
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public sealed class MiniCommand<T> : MiniCommand, ICommand
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{
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private readonly Action<T> _callback;
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private bool _busy;
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private Func<T, Task> _asyncCallback;
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public MiniCommand(Action<T> callback)
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{
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_callback = callback;
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}
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public MiniCommand(Func<T, Task> callback)
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{
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_asyncCallback = callback;
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}
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private bool Busy
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{
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get => _busy;
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set
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{
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_busy = value;
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CanExecuteChanged?.Invoke(this, EventArgs.Empty);
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}
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}
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public override event EventHandler CanExecuteChanged;
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public override bool CanExecute(object parameter) => !_busy;
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public override async void Execute(object parameter)
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{
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if (Busy)
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{
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return;
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}
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try
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{
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Busy = true;
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if (_callback != null)
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{
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_callback((T)parameter);
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}
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else
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{
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await _asyncCallback((T)parameter);
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}
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}
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finally
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{
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Busy = false;
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}
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}
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}
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public abstract class MiniCommand : ICommand
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{
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public static MiniCommand Create(Action callback) => new MiniCommand<object>(_ => callback());
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public static MiniCommand Create<TArg>(Action<TArg> callback) => new MiniCommand<TArg>(callback);
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public static MiniCommand CreateFromTask(Func<Task> callback) => new MiniCommand<object>(_ => callback());
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public abstract bool CanExecute(object parameter);
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public abstract void Execute(object parameter);
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public abstract event EventHandler CanExecuteChanged;
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}
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}
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