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1 using System;
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2 using System.Collections.Generic;
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3 using System.Linq;
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4 using System.Text;
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5
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6 namespace Implab
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7 {
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8 public interface IPromise
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9 {
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10 /// <summary>
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11 /// Check whereather the promise has no more than one dependent promise.
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12 /// </summary>
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13 bool IsExclusive
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14 {
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15 get;
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16 }
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17
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18 /// <summary>
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19 /// The current state of the promise.
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20 /// </summary>
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21 PromiseState State
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22 {
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23 get;
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24 }
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25
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26 /// <summary>
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27 /// Tries to cancel the promise or the complete chain.
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28 /// </summary>
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29 /// <param name="dependencies">Try to cancel the whole promise chain, the parent promise will be cancelled only if it has only one promise</param>
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30 /// <returns></returns>
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31 bool Cancel(bool dependencies);
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32
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33 /// <summary>
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34 /// Registers handler for the case when the promise is cencelled. If the promise already cancelled the
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35 /// handler will be invoked immediatelly.
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36 /// </summary>
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37 /// <param name="handler">The handler</param>
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38 void HandleCancelled(Action handler);
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39 }
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40 }
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