/// <summary>
/// コンストラクタ。
/// </summary>
/// <param name="command">非同期コマンド。</param>
private AsyncCommandHolderBase(AsyncReactiveCommand <TParameter> command)
{
if (command == null)
{
return;
}
// 戻り値の通知先
// 同値でも通知されるように DistinctUntilChanged を外す
var result =
new ReactiveProperty <TResult>(
default(TResult),
ReactivePropertyMode.RaiseLatestValueOnSubscribe)
.AddTo(this.CompositeDisposable);
var busy = new ReactiveProperty <bool>(false).AddTo(this.CompositeDisposable);
command
.Subscribe(
async p =>
{
busy.Value = true;
try
{
result.Value = await this.Execute(this.ConvertParameter(p));
}
finally
{
busy.Value = false;
}
})
.AddTo(this.CompositeDisposable);
this.Command = command;
this.CanExecute =
command
.CanExecuteToReadOnlyReactiveProperty()
.AddTo(this.CompositeDisposable);
this.IsBusy = busy;
this.Result = result;
}