##// END OF EJS Templates
implab » ImplabNet
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r102:b4c4d65b7def v2
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1 using System.Windows.Forms;
1 using System.Windows.Forms;
2 using System;
2 using System;
3
3
4
4
5 namespace Implab.Fx {
5 namespace Implab.Fx {
6 public class ControlBoundPromise<T> : Promise<T> {
6 public class ControlBoundPromise<T> : Promise<T> {
7 readonly Control m_target;
7 readonly Control m_target;
8
8
9 public ControlBoundPromise(Control target) {
9 public ControlBoundPromise(Control target) {
10 Safe.ArgumentNotNull(target, "target");
10 Safe.ArgumentNotNull(target, "target");
11
11
12 m_target = target;
12 m_target = target;
13 }
13 }
14
14
15 public ControlBoundPromise(Control target, IPromise parent, bool cancellable)
15 public ControlBoundPromise(Control target, IPromise parent)
16 : base(parent, cancellable) {
16 : base(parent) {
17 Safe.ArgumentNotNull(target, "target");
17 Safe.ArgumentNotNull(target, "target");
18
18
19 m_target = target;
19 m_target = target;
20 }
20 }
21
21
22 protected override void InvokeHandler(HandlerDescriptor handler) {
22 protected override void InvokeHandler(HandlerDescriptor handler) {
23 if (m_target.InvokeRequired)
23 if (m_target.InvokeRequired)
24 m_target.BeginInvoke(new Action<HandlerDescriptor>(base.InvokeHandler), handler);
24 m_target.BeginInvoke(new Action<HandlerDescriptor>(base.InvokeHandler), handler);
25 else
25 else
26 base.InvokeHandler(handler);
26 base.InvokeHandler(handler);
27 }
27 }
28 }
28 }
29 }
29 }
30
30
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@@ -1,41 +1,41
1 using System;
1 using System;
2 using System.Windows.Forms;
2 using System.Windows.Forms;
3 using System.Threading;
3 using System.Threading;
4
4
5 namespace Implab.Fx
5 namespace Implab.Fx
6 {
6 {
7 public static class PromiseHelpers
7 public static class PromiseHelpers
8 {
8 {
9 /// <summary>
9 /// <summary>
10 /// Перенаправляет обработку обещания в поток указанного элемента управления.
10 /// Перенаправляет обработку обещания в поток указанного элемента управления.
11 /// </summary>
11 /// </summary>
12 /// <typeparam name="T">Тип результата обещания</typeparam>
12 /// <typeparam name="T">Тип результата обещания</typeparam>
13 /// <param name="that">Исходное обещание</param>
13 /// <param name="that">Исходное обещание</param>
14 /// <param name="ctl">Элемент управления</param>
14 /// <param name="ctl">Элемент управления</param>
15 /// <returns>Новое обещание, обработчики которого будут выполнены в потоке элемента управления.</returns>
15 /// <returns>Новое обещание, обработчики которого будут выполнены в потоке элемента управления.</returns>
16 /// <exception cref="ArgumentNullException">Параметр не может быть <c>null</c>.</exception>
16 /// <exception cref="ArgumentNullException">Параметр не может быть <c>null</c>.</exception>
17 /// <example>
17 /// <example>
18 /// client
18 /// client
19 /// .Get("description.txt") // returns a promise
19 /// .Get("description.txt") // returns a promise
20 /// .DispatchToControl(m_ctl) // handle the promise in the thread of the control
20 /// .DispatchToControl(m_ctl) // handle the promise in the thread of the control
21 /// .Then(
21 /// .Then(
22 /// description => m_ctl.Text = description // now it's safe
22 /// description => m_ctl.Text = description // now it's safe
23 /// )
23 /// )
24 /// </example>
24 /// </example>
25 public static IPromise<T> DispatchToControl<T>(this IPromise<T> that, Control ctl)
25 public static IPromise<T> DispatchToControl<T>(this IPromise<T> that, Control ctl)
26 {
26 {
27 Safe.ArgumentNotNull(that, "that");
27 Safe.ArgumentNotNull(that, "that");
28 Safe.ArgumentNotNull(ctl, "ctl");
28 Safe.ArgumentNotNull(ctl, "ctl");
29
29
30 var directed = new ControlBoundPromise<T>(ctl,that,true);
30 var directed = new ControlBoundPromise<T>(ctl,that);
31
31
32 that.Last(
32 that.Last(
33 directed.Resolve,
33 directed.Resolve,
34 directed.Reject,
34 directed.Reject,
35 directed.Cancel
35 directed.Cancel
36 );
36 );
37
37
38 return directed;
38 return directed;
39 }
39 }
40 }
40 }
41 }
41 }
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