source: branches/OptimizationNetworks/HeuristicLab.Optimization.Networks/3.3/InputPort.cs @ 11431

Last change on this file since 11431 was 11431, checked in by swagner, 8 years ago

#2205: Worked on optimization networks

File size: 3.9 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2014 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using HeuristicLab.Common;
23using HeuristicLab.Core;
24using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
25using System;
26using System.Drawing;
27
28namespace HeuristicLab.Optimization.Networks {
29  [Item("InputPort", "An asynchronous input port of an optimization network node.")]
30  [StorableClass]
31  public class InputPort<T> : ValuePort<T>, IInputPort<T> where T : class, IItem {
32    public static new Image StaticItemImage {
33      get { return HeuristicLab.Common.Resources.VSImageLibrary.ArrowDown; }
34    }
35
36    [Storable]
37    private IOutputPort<T> outputPort;
38    public IOutputPort<T> OutputPort {
39      get { return outputPort; }
40      set {
41        if (outputPort != value) {
42          DeregisterOutputPortEvents();
43          outputPort = value;
44          RegisterOutputPortEvents();
45          OnOutputPortChanged();
46        }
47      }
48    }
49    IOutputPort IInputPort.OutputPort {
50      get { return outputPort; }
51      set {
52        var val = value as IOutputPort<T>;
53        if ((value != null) && (val == null))
54          throw new InvalidOperationException(
55            string.Format("Type mismatch. OutputPort is not a \"{0}\".",
56                          typeof(IOutputPort<T>).GetPrettyName())
57          );
58        OutputPort = val;
59      }
60    }
61
62    [StorableConstructor]
63    protected InputPort(bool deserializing) : base(deserializing) { }
64    protected InputPort(InputPort<T> original, Cloner cloner) : base(original, cloner) {
65      outputPort = cloner.Clone(original.outputPort);
66      RegisterOutputPortEvents();
67    }
68    public InputPort() : base("InputPort") { }
69    public InputPort(string name) : base(name) { }
70    public InputPort(string name, string description) : base(name, description) { }
71
72    [StorableHook(HookType.AfterDeserialization)]
73    private void AfterDeserialization() {
74      RegisterOutputPortEvents();
75    }
76
77    public override IDeepCloneable Clone(Cloner cloner) {
78      return new InputPort<T>(this, cloner);
79    }
80
81    public event EventHandler OutputPortChanged;
82    protected void OnOutputPortChanged() {
83      var handler = OutputPortChanged;
84      if (handler != null) handler(this, EventArgs.Empty);
85    }
86
87    protected void RegisterOutputPortEvents() {
88      if (outputPort != null) {
89        outputPort.ValueChanged += OutputPort_ValueChanged;
90        outputPort.PathChanged += OutputPort_PathChanged;
91      }
92    }
93    protected void DeregisterOutputPortEvents() {
94      if (outputPort != null) {
95        outputPort.ValueChanged -= OutputPort_ValueChanged;
96        outputPort.PathChanged -= OutputPort_PathChanged;
97      }
98    }
99    protected void OutputPort_ValueChanged(object sender, EventArgs e) {
100      var value = OutputPort.Value;
101      if (value != null)
102        value = (T)value.Clone();
103      Value = value;
104      //DISCUSS: clone value?
105      //DISCUSS: switch threads to decouple value propagation and to make communication asynchronous -> should be done in Node?
106    }
107    protected void OutputPort_PathChanged(object sender, EventArgs e) {
108      OnOutputPortChanged();
109    }
110  }
111}
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