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source: trunk/sources/HeuristicLab.Parameters.Views/3.3/ValueParameterView.cs @ 2891

Last change on this file since 2891 was 2891, checked in by swagner, 14 years ago

Operator architecture refactoring (#95)

  • worked on algorithms and parameters
File size: 4.7 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 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.Windows.Forms;
24using HeuristicLab.Core;
25using HeuristicLab.Core.Views;
26using HeuristicLab.MainForm;
27
28namespace HeuristicLab.Parameters.Views {
29  /// <summary>
30  /// The visual representation of a <see cref="Parameter"/>.
31  /// </summary>
32  [Content(typeof(ValueParameter<>), true)]
33  public partial class ValueParameterView<T> : ParameterView where T : class, IItem {
34    /// <summary>
35    /// Gets or sets the variable to represent visually.
36    /// </summary>
37    /// <remarks>Uses property <see cref="ViewBase.Item"/> of base class <see cref="ViewBase"/>.
38    /// No own data storage present.</remarks>
39    public new ValueParameter<T> Content {
40      get { return (ValueParameter<T>)base.Content; }
41      set { base.Content = value; }
42    }
43
44    /// <summary>
45    /// Initializes a new instance of <see cref="VariableView"/> with caption "Variable".
46    /// </summary>
47    public ValueParameterView() {
48      InitializeComponent();
49      Caption = "ValueParameter";
50    }
51    /// <summary>
52    /// Initializes a new instance of <see cref="VariableView"/> with the given <paramref name="variable"/>.
53    /// </summary>
54    /// <remarks>Calls <see cref="VariableView()"/>.</remarks>
55    /// <param name="variable">The variable to represent visually.</param>
56    public ValueParameterView(ValueParameter<T> content)
57      : this() {
58      Content = content;
59    }
60
61    /// <summary>
62    /// Removes the eventhandlers from the underlying <see cref="IVariable"/>.
63    /// </summary>
64    /// <remarks>Calls <see cref="ViewBase.RemoveItemEvents"/> of base class <see cref="ViewBase"/>.</remarks>
65    protected override void DeregisterContentEvents() {
66      Content.ValueChanged -= new EventHandler(Content_ValueChanged);
67      base.DeregisterContentEvents();
68    }
69
70    /// <summary>
71    /// Adds eventhandlers to the underlying <see cref="IVariable"/>.
72    /// </summary>
73    /// <remarks>Calls <see cref="ViewBase.AddItemEvents"/> of base class <see cref="ViewBase"/>.</remarks>
74    protected override void RegisterContentEvents() {
75      base.RegisterContentEvents();
76      Content.ValueChanged += new EventHandler(Content_ValueChanged);
77    }
78
79    protected override void OnContentChanged() {
80      base.OnContentChanged();
81      if (Content == null) {
82        Caption = "ValueParameter";
83        viewHost.Content = null;
84        valueGroupBox.Enabled = false;
85      } else {
86        Caption = Content.Name + " (" + Content.GetType().Name + ")";
87        valueGroupBox.Enabled = true;
88        viewHost.Content = Content.Value;
89      }
90    }
91
92    protected virtual void Content_ValueChanged(object sender, EventArgs e) {
93      if (InvokeRequired)
94        Invoke(new EventHandler(Content_ValueChanged), sender, e);
95      else {
96        viewHost.Content = Content.Value;
97      }
98    }
99
100    protected virtual void valuePanel_DragEnterOver(object sender, DragEventArgs e) {
101      e.Effect = DragDropEffects.None;
102      Type type = e.Data.GetData("Type") as Type;
103      if ((type != null) && (Content.DataType.IsAssignableFrom(type))) {
104        if ((e.KeyState & 8) == 8) e.Effect = DragDropEffects.Copy;  // CTRL key
105        else if ((e.KeyState & 4) == 4) e.Effect = DragDropEffects.Move;  // SHIFT key
106        else if ((e.AllowedEffect & DragDropEffects.Link) == DragDropEffects.Link) e.Effect = DragDropEffects.Link;
107        else if ((e.AllowedEffect & DragDropEffects.Copy) == DragDropEffects.Copy) e.Effect = DragDropEffects.Copy;
108        else if ((e.AllowedEffect & DragDropEffects.Move) == DragDropEffects.Move) e.Effect = DragDropEffects.Move;
109      }
110    }
111    protected virtual void valuePanel_DragDrop(object sender, DragEventArgs e) {
112      if (e.Effect != DragDropEffects.None) {
113        T value = e.Data.GetData("Value") as T;
114        if ((e.Effect & DragDropEffects.Copy) == DragDropEffects.Copy) value = (T)value.Clone();
115        Content.Value = value;
116      }
117    }
118  }
119}
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