implab/ImplabNet Files · Implab.Fx/PromiseHelpers.cs

Bound promise to CancellationToken...

Bound promise to CancellationToken Added new states to ExecutionSate enum. Added Safe.Guard() method to handle cleanup of the result of the promise

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             PromiseHelpers.cs
        
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      using System;

      using System.Windows.Forms;

      using System.Threading;

      namespace Implab.Fx

      {

          public static class PromiseHelpers

          {

              /// <summary>

              /// Перенаправляет обработку обещания в поток указанного элемента управления.

              /// </summary>

              /// <typeparam name="T">Тип результата обещания</typeparam>

              /// <param name="that">Исходное обещание</param>

              /// <param name="ctl">Элемент управления</param>

              /// <returns>Новое обещание, обработчики которого будут выполнены в потоке элемента управления.</returns>

              /// <exception cref="ArgumentNullException">Параметр не может быть <c>null</c>.</exception>

              /// <example>

              /// client

              ///     .Get("description.txt") // returns a promise

              ///     .DispatchToControl(m_ctl) // handle the promise in the thread of the control

              ///     .Then(

              ///         description => m_ctl.Text = description // now it's safe

              ///     )

              /// </example>

              public static IPromise<T> DispatchToControl<T>(this IPromise<T> that, Control ctl)

              {

                  Safe.ArgumentNotNull(that, "that");

                  Safe.ArgumentNotNull(ctl, "ctl");

                  var directed = new ControlBoundPromise<T>(ctl);

                  directed.On(that.Cancel, PromiseEventType.Cancelled);

                  that.On(

                      directed.Resolve,

                      directed.Reject,

                      directed.Cancel

                  );

                  return directed;

              }

          }

      }

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				using System;
				using System.Windows.Forms;
				using System.Threading;

				namespace Implab.Fx
				{
				public static class PromiseHelpers
				{
				/// <summary>
				/// Перенаправляет обработку обещания в поток указанного элемента управления.
				/// </summary>
				/// <typeparam name="T">Тип результата обещания</typeparam>
				/// <param name="that">Исходное обещание</param>
				/// <param name="ctl">Элемент управления</param>
				/// <returns>Новое обещание, обработчики которого будут выполнены в потоке элемента управления.</returns>
				/// <exception cref="ArgumentNullException">Параметр не может быть <c>null</c>.</exception>
				/// <example>
				/// client
				/// .Get("description.txt") // returns a promise
				/// .DispatchToControl(m_ctl) // handle the promise in the thread of the control
				/// .Then(
				/// description => m_ctl.Text = description // now it's safe
				/// )
				/// </example>
				public static IPromise<T> DispatchToControl<T>(this IPromise<T> that, Control ctl)
				{
				Safe.ArgumentNotNull(that, "that");
				Safe.ArgumentNotNull(ctl, "ctl");

				var directed = new ControlBoundPromise<T>(ctl);

				directed.On(that.Cancel, PromiseEventType.Cancelled);

				that.On(
				directed.Resolve,
				directed.Reject,
				directed.Cancel
				);

				return directed;
				}
				}
				}