/// <summary>
/// A utility method that will pipe an Observable to an ICommand (i.e.
/// it will first call its CanExecute with the provided value, then if
/// the command can be executed, Execute() will be called).
/// </summary>
/// <typeparam name="T">The type.</typeparam>
/// <typeparam name="TResult">The result type.</typeparam>
/// <param name="this">The source observable to pipe into the command.</param>
/// <param name="command">The command to be executed.</param>
/// <returns>An object that when disposes, disconnects the Observable
/// from the command.</returns>
public static IDisposable InvokeCommand <T, TResult>(this IObservable <T> @this, ReactiveCommandBase <T, TResult> command)
{
return(WithLatestFromFixed(@this, command.CanExecute, (value, canExecute) => InvokeCommandInfo.From(command, canExecute, value))
.Where(ii => ii.CanExecute)
.SelectMany(ii => command.Execute(ii.Value).Catch(Observable <TResult> .Empty))
.Subscribe());
}
/// <summary>
/// A utility method that will pipe an Observable to an ICommand (i.e.
/// it will first call its CanExecute with the provided value, then if
/// the command can be executed, Execute() will be called).
/// </summary>
/// <typeparam name="T">The type.</typeparam>
/// <typeparam name="TResult">The result type.</typeparam>
/// <param name="item">The source observable to pipe into the command.</param>
/// <param name="command">The command to be executed.</param>
/// <returns>An object that when disposes, disconnects the Observable
/// from the command.</returns>
public static IDisposable InvokeCommand <T, TResult>(this IObservable <T> item, ReactiveCommandBase <T, TResult> command)
{
if (command == null)
{
throw new ArgumentNullException(nameof(command));
}
return(WithLatestFromFixed(item, command.CanExecute, (value, canExecute) => InvokeCommandInfo.From(command, canExecute, value))
.Where(ii => ii.CanExecute)
.SelectMany(ii => command.Execute(ii.Value).Catch(Observable <TResult> .Empty))
.Subscribe());
}
/// <summary>
/// A utility method that will pipe an Observable to an ICommand (i.e.
/// it will first call its CanExecute with the provided value, then if
/// the command can be executed, Execute() will be called).
/// </summary>
/// <typeparam name="T">The type.</typeparam>
/// <typeparam name="TResult">The result type.</typeparam>
/// <param name="item">The source observable to pipe into the command.</param>
/// <param name="command">The command to be executed.</param>
/// <returns>An object that when disposes, disconnects the Observable
/// from the command.</returns>
public static IDisposable InvokeCommand <T, TResult>(this IObservable <T> item, ReactiveCommandBase <T, TResult>?command) =>
command is null
? throw new ArgumentNullException(nameof(command))