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source: trunk/sources/HeuristicLab.Core/3.2/ChooseOperatorDialog.cs @ 1529

Last change on this file since 1529 was 1529, checked in by gkronber, 15 years ago

Moved source files of plugins AdvancedOptimizationFrontEnd ... Grid into version-specific sub-folders. #576

File size: 6.7 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2008 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 System;
23using System.Collections;
24using System.Collections.Generic;
25using System.ComponentModel;
26using System.Data;
27using System.Drawing;
28using System.Text;
29using System.Windows.Forms;
30using HeuristicLab.PluginInfrastructure;
31
32namespace HeuristicLab.Core {
33  /// <summary>
34  /// A dialog to select an operator out of a library.
35  /// </summary>
36  public partial class ChooseOperatorDialog : Form {
37    #region Inner Class TreeNodeSorter
38    private class TreeNodeSorter : IComparer {
39      public int Compare(object x, object y) {
40        TreeNode tx = x as TreeNode;
41        TreeNode ty = y as TreeNode;
42
43        int result = string.Compare(tx.Text, ty.Text);
44        if (result == 0)
45          result = tx.Index.CompareTo(ty.Index);
46        return result;
47      }
48    }
49    #endregion
50
51    private IOperatorLibrary operatorLibrary;
52
53    private IOperator myOperator;
54    /// <summary>
55    /// Gets the selected operator.
56    /// </summary>
57    public IOperator Operator {
58      get { return myOperator; }
59    }
60
61    /// <summary>
62    /// Initializes a new instance of <see cref="ChooseOperatorDialog"/>.
63    /// </summary>
64    public ChooseOperatorDialog() {
65      InitializeComponent();
66      operatorLibrary = null;
67      myOperator = null;
68      TreeNodeSorter nodeSorter = new TreeNodeSorter();
69      operatorLibraryOperatorsTreeView.TreeViewNodeSorter = nodeSorter;
70      builtinOperatorsTreeView.TreeViewNodeSorter = nodeSorter;
71
72      DiscoveryService discoveryService = new DiscoveryService();
73      PluginInfo[] plugins = discoveryService.Plugins;
74      foreach(PluginInfo plugin in plugins) {
75        TreeNode pluginItem = new TreeNode();
76        pluginItem.Text = plugin.Name;
77        pluginItem.Tag = plugin;
78
79        Type[] operators = discoveryService.GetTypes(typeof(IOperator), plugin);
80        foreach(Type type in operators) {
81          if(!type.IsAbstract) {
82            TreeNode operatorItem = new TreeNode();
83            operatorItem.Text = type.Name;
84            operatorItem.Tag = type;
85            pluginItem.Nodes.Add(operatorItem);
86          }
87        }
88        // add plugin node only if it contains operators
89        if(pluginItem.Nodes.Count > 0) {
90          builtinOperatorsTreeView.Nodes.Add(pluginItem);
91        }
92      }
93      if (builtinOperatorsTreeView.Nodes.Count == 0) {
94        builtinOperatorsTreeView.Enabled = false;
95        builtinOperatorsTreeView.Nodes.Add("No operators available");
96      }
97      builtinOperatorsTreeView.Sort();
98    }
99
100    private void UpdateOperatorsTreeView() {
101      operatorLibraryOperatorsTreeView.Nodes.Clear();
102      operatorLibraryOperatorsTreeView.Nodes.Add(CreateTreeNode(operatorLibrary.Group));
103      operatorLibraryOperatorsTreeView.Sort();
104    }
105
106    private TreeNode CreateTreeNode(IOperatorGroup group) {
107      TreeNode node = new TreeNode();
108      node.Text = group.Name;
109      node.ForeColor = Color.LightGray;
110      node.Tag = group;
111
112      foreach (IOperator op in group.Operators)
113        node.Nodes.Add(CreateTreeNode(op));
114      foreach (IOperatorGroup subGroup in group.SubGroups)
115        node.Nodes.Add(CreateTreeNode(subGroup));
116      return node;
117    }
118    private TreeNode CreateTreeNode(IOperator op) {
119      TreeNode node = new TreeNode();
120      node.Text = op.Name;
121      node.ToolTipText = op.GetType().Name;
122      node.Tag = op;
123      return node;
124    }
125
126    #region Form Events
127    private void ChooseOperatorDialog_Shown(object sender, EventArgs e) {
128      operatorLibraryOperatorsTreeView.SelectedNode = null;
129      operatorLibraryOperatorsDescriptionTextBox.Text = "";
130      myOperator = null;
131      builtinOperatorsTreeView.SelectedNode = null;
132      builtinOperatorsDescriptionTextBox.Text = "";
133      okButton.Enabled = false;
134    }
135    #endregion
136
137    #region Selection Events
138    private void operatorsTreeView_AfterSelect(object sender, TreeViewEventArgs e) {
139      okButton.Enabled = false;
140      myOperator = null;
141      operatorLibraryOperatorsDescriptionTextBox.Text = "";
142      if ((operatorLibraryOperatorsTreeView.SelectedNode != null) && (operatorLibraryOperatorsTreeView.SelectedNode.Tag is IOperator)) {
143        myOperator = (IOperator)operatorLibraryOperatorsTreeView.SelectedNode.Tag;
144        myOperator = (IOperator)myOperator.Clone();
145        operatorLibraryOperatorsDescriptionTextBox.Text = myOperator.Description;
146        okButton.Enabled = true;
147      }
148    }
149    private void builtinOperatorsTreeView_AfterSelect(object sender, TreeViewEventArgs e) {
150      okButton.Enabled = false;
151      myOperator = null;
152      builtinOperatorsDescriptionTextBox.Text = "";
153      if ((builtinOperatorsTreeView.SelectedNode != null) && (builtinOperatorsTreeView.SelectedNode.Tag is Type)) {
154        okButton.Enabled = true;
155        myOperator = (IOperator)Activator.CreateInstance((Type)builtinOperatorsTreeView.SelectedNode.Tag);
156        builtinOperatorsDescriptionTextBox.Text = myOperator.Description;
157      }
158    }
159    #endregion
160
161    #region Click Events
162    private void loadButton_Click(object sender, EventArgs e) {
163      if (openFileDialog.ShowDialog(this) == DialogResult.OK) {
164        operatorLibrary = (IOperatorLibrary)PersistenceManager.Load(openFileDialog.FileName);
165        operatorLibraryTextBox.Text = openFileDialog.FileName;
166        toolTip.SetToolTip(operatorLibraryTextBox, openFileDialog.FileName);
167        operatorLibraryOperatorsGroupBox.Enabled = true;
168        UpdateOperatorsTreeView();
169      }
170    }
171    private void okButton_Click(object sender, EventArgs e) {
172      if (Operator != null) {
173        this.DialogResult = DialogResult.OK;
174        this.Close();
175      }
176    }
177    private void treeView_DoubleClick(object sender, EventArgs e) {
178      if (Operator != null) {
179        this.DialogResult = DialogResult.OK;
180        this.Close();
181      }
182    }
183    #endregion
184  }
185}
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