1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2014 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using HeuristicLab.Common;
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23 | using HeuristicLab.Core;
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24 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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25 | using System;
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26 |
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27 | namespace HeuristicLab.Optimization.Networks {
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28 | [Item("InputPort", "An asynchronous input port of an optimization network node.")]
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29 | [StorableClass]
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30 | public class InputPort<T> : Port<T>, IInputPort<T> where T : class, IItem {
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31 | [Storable]
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32 | private IOutputPort<T> outputPort;
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33 | public IOutputPort<T> OutputPort {
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34 | get { return outputPort; }
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35 | set {
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36 | if (outputPort != value) {
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37 | DeregisterOutputPortEvents();
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38 | outputPort = value;
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39 | RegisterOutputPortEvents();
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40 | OnOutputPortChanged();
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41 | }
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42 | }
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43 | }
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44 | IOutputPort IInputPort.OutputPort {
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45 | get { return outputPort; }
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46 | }
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47 |
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48 | [StorableConstructor]
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49 | protected InputPort(bool deserializing) : base(deserializing) { }
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50 | protected InputPort(InputPort<T> original, Cloner cloner) : base(original, cloner) {
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51 | outputPort = cloner.Clone(original.outputPort);
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52 | RegisterOutputPortEvents();
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53 | }
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54 | public InputPort() : base("InputPort") { }
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55 | public InputPort(string name) : base(name) { }
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56 | public InputPort(string name, string description) : base(name, description) { }
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57 |
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58 | [StorableHook(HookType.AfterDeserialization)]
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59 | private void AfterDeserialization() {
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60 | RegisterOutputPortEvents();
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61 | }
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62 |
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63 | public override IDeepCloneable Clone(Cloner cloner) {
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64 | return new InputPort<T>(this, cloner);
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65 | }
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66 |
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67 | public event EventHandler OutputPortChanged;
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68 | protected void OnOutputPortChanged() {
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69 | var handler = OutputPortChanged;
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70 | if (handler != null) handler(this, EventArgs.Empty);
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71 | }
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72 |
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73 | protected void RegisterOutputPortEvents() {
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74 | outputPort.ValueChanged += OutputPort_ValueChanged;
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75 |
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76 | }
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77 | protected void DeregisterOutputPortEvents() {
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78 | outputPort.ValueChanged -= OutputPort_ValueChanged;
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79 | }
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80 | protected void OutputPort_ValueChanged(object sender, EventArgs e) {
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81 | Value = (T)OutputPort.Value.Clone();
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82 | //DISCUSS: clone value?
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83 | //DISCUSS: switch threads to decouple value propagation and to make communication asynchronous -> should be done in Node?
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84 | }
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85 | }
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86 | }
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