1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2008 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 System;
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23 | using System.Collections.Generic;
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24 | using System.Text;
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25 | using System.Reflection;
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26 | using System.Diagnostics;
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27 | using System.Linq;
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28 |
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29 | namespace HeuristicLab.PluginInfrastructure {
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30 | /// <summary>
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31 | /// Default implementation of the IPlugin interface.
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32 | /// </summary>
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33 | public abstract class PluginBase : IPlugin {
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34 | /// <summary>
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35 | /// Initializes a new instance of <see cref="PluginBase"/>.
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36 | /// </summary>
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37 | public PluginBase() { }
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38 |
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39 | private PluginDescriptionAttribute PluginDescriptionAttribute {
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40 | get {
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41 | object[] pluginAttributes = this.GetType().GetCustomAttributes(typeof(PluginDescriptionAttribute), false);
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42 | // exactly one attribute of the type PluginDescriptionAttribute must be given
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43 | if (pluginAttributes.Length != 1) {
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44 | throw new InvalidPluginException("Found multiple PluginDescriptionAttributes on type " + this.GetType());
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45 | }
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46 | return (PluginDescriptionAttribute)pluginAttributes[0];
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47 | }
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48 | }
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49 |
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50 | #region IPlugin Members
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51 | /// <inheritdoc />
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52 | public string Name {
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53 | get {
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54 | return PluginDescriptionAttribute.Name;
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55 | }
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56 | }
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57 |
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58 | /// <inheritdoc />
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59 | public Version Version {
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60 | get {
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61 | var pluginAttribute = PluginDescriptionAttribute;
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62 | // if the version is not set in the attribute then the version of the assembly is used as default
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63 | if (string.IsNullOrEmpty(pluginAttribute.Version)) {
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64 | return this.GetType().Assembly.GetName().Version;
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65 | } else {
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66 | return new Version(pluginAttribute.Version);
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67 | }
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68 | }
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69 | }
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70 |
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71 | /// <inheritdoc />
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72 | public string Description {
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73 | get {
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74 | var pluginAttribute = PluginDescriptionAttribute;
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75 | // if the description is not explicitly set in the attribute then the name of the plugin is used as default
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76 | if (string.IsNullOrEmpty(pluginAttribute.Description)) {
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77 | return pluginAttribute.Name;
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78 | } else {
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79 | return pluginAttribute.Description;
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80 | }
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81 | }
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82 | }
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83 |
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84 | /// <inheritdoc/>
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85 | public IEnumerable<string> FileNames {
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86 | get {
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87 | // get all attributes of type PluginFileAttribute, multiple usage is possible
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88 | return from x in this.GetType().GetCustomAttributes(typeof(PluginFileAttribute), false)
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89 | let pluginFileAttr = (PluginFileAttribute)x
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90 | select pluginFileAttr.Filename;
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91 | }
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92 | }
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93 |
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94 | /// <inhertitdoc>
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95 | public virtual void OnLoad() { }
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96 | #endregion
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97 |
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98 | }
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99 | }
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