source: trunk/sources/HeuristicLab.Parameters.Views/3.3/ValueLookupParameterView.cs @ 2917

Last change on this file since 2917 was 2917, checked in by swagner, 12 years ago

Operator architecture refactoring (#95)

  • implemented reviewers' comments
File size: 6.6 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  [View("ValueLookupParameter View")]
33  [Content(typeof(ValueLookupParameter<>), true)]
34  [Content(typeof(IValueLookupParameter<>), false)]
35  public partial class ValueLookupParameterView<T> : ParameterView where T : class, IItem {
36    protected TypeSelectorDialog typeSelectorDialog;
37
38    /// <summary>
39    /// Gets or sets the variable to represent visually.
40    /// </summary>
41    /// <remarks>Uses property <see cref="ViewBase.Item"/> of base class <see cref="ViewBase"/>.
42    /// No own data storage present.</remarks>
43    public new IValueLookupParameter<T> Content {
44      get { return (IValueLookupParameter<T>)base.Content; }
45      set { base.Content = value; }
46    }
47
48    /// <summary>
49    /// Initializes a new instance of <see cref="VariableView"/> with caption "Variable".
50    /// </summary>
51    public ValueLookupParameterView() {
52      InitializeComponent();
53      Caption = "ValueLookupParameter";
54    }
55    /// <summary>
56    /// Initializes a new instance of <see cref="VariableView"/> with the given <paramref name="variable"/>.
57    /// </summary>
58    /// <remarks>Calls <see cref="VariableView()"/>.</remarks>
59    /// <param name="variable">The variable to represent visually.</param>
60    public ValueLookupParameterView(IValueLookupParameter<T> content)
61      : this() {
62      Content = content;
63    }
64
65    /// <summary>
66    /// Removes the eventhandlers from the underlying <see cref="IVariable"/>.
67    /// </summary>
68    /// <remarks>Calls <see cref="ViewBase.RemoveItemEvents"/> of base class <see cref="ViewBase"/>.</remarks>
69    protected override void DeregisterContentEvents() {
70      Content.ActualNameChanged -= new EventHandler(Content_ActualNameChanged);
71      Content.ValueChanged -= new EventHandler(Content_ValueChanged);
72      base.DeregisterContentEvents();
73    }
74
75    /// <summary>
76    /// Adds eventhandlers to the underlying <see cref="IVariable"/>.
77    /// </summary>
78    /// <remarks>Calls <see cref="ViewBase.AddItemEvents"/> of base class <see cref="ViewBase"/>.</remarks>
79    protected override void RegisterContentEvents() {
80      base.RegisterContentEvents();
81      Content.ActualNameChanged += new EventHandler(Content_ActualNameChanged);
82      Content.ValueChanged += new EventHandler(Content_ValueChanged);
83    }
84
85    protected override void OnContentChanged() {
86      base.OnContentChanged();
87      if (Content == null) {
88        Caption = "ValueLookupParameter";
89        actualNameTextBox.Text = "-";
90        actualNameTextBox.Enabled = false;
91        setValueButton.Enabled = false;
92        clearValueButton.Enabled = false;
93        valueGroupBox.Enabled = false;
94        viewHost.Content = null;
95      } else {
96        Caption = Content.Name + " (" + Content.GetType().Name + ")";
97        actualNameTextBox.Text = Content.ActualName;
98        actualNameTextBox.Enabled = true;
99        setValueButton.Enabled = Content.Value == null;
100        clearValueButton.Enabled = Content.Value != null;
101        valueGroupBox.Enabled = true;
102        viewHost.Content = Content.Value;
103      }
104    }
105
106    protected virtual void Content_ActualNameChanged(object sender, EventArgs e) {
107      if (InvokeRequired)
108        Invoke(new EventHandler(Content_ActualNameChanged), sender, e);
109      else
110        actualNameTextBox.Text = Content.ActualName;
111    }
112    protected virtual void Content_ValueChanged(object sender, EventArgs e) {
113      if (InvokeRequired)
114        Invoke(new EventHandler(Content_ValueChanged), sender, e);
115      else {
116        setValueButton.Enabled = Content.Value == null;
117        clearValueButton.Enabled = Content.Value != null;
118        viewHost.Content = Content.Value;
119      }
120    }
121
122    protected virtual void actualNameTextBox_Validated(object sender, EventArgs e) {
123      Content.ActualName = actualNameTextBox.Text;
124    }
125    protected virtual void setValueButton_Click(object sender, EventArgs e) {
126      if (typeSelectorDialog == null) {
127        typeSelectorDialog = new TypeSelectorDialog();
128        typeSelectorDialog.Caption = "Select Value";
129        typeSelectorDialog.TypeSelector.Configure(Content.DataType, false, false);
130      }
131      if (typeSelectorDialog.ShowDialog(this) == DialogResult.OK)
132        Content.Value = (T)typeSelectorDialog.TypeSelector.CreateInstanceOfSelectedType();
133    }
134    protected virtual void clearValueButton_Click(object sender, EventArgs e) {
135      Content.Value = null;
136    }
137    protected virtual void valuePanel_DragEnterOver(object sender, DragEventArgs e) {
138      e.Effect = DragDropEffects.None;
139      Type type = e.Data.GetData("Type") as Type;
140      if ((type != null) && (Content.DataType.IsAssignableFrom(type))) {
141        if ((e.KeyState & 8) == 8) e.Effect = DragDropEffects.Copy;  // CTRL key
142        else if ((e.KeyState & 4) == 4) e.Effect = DragDropEffects.Move;  // SHIFT key
143        else if ((e.AllowedEffect & DragDropEffects.Link) == DragDropEffects.Link) e.Effect = DragDropEffects.Link;
144        else if ((e.AllowedEffect & DragDropEffects.Copy) == DragDropEffects.Copy) e.Effect = DragDropEffects.Copy;
145        else if ((e.AllowedEffect & DragDropEffects.Move) == DragDropEffects.Move) e.Effect = DragDropEffects.Move;
146      }
147    }
148    protected virtual void valuePanel_DragDrop(object sender, DragEventArgs e) {
149      if (e.Effect != DragDropEffects.None) {
150        T value = e.Data.GetData("Value") as T;
151        if ((e.Effect & DragDropEffects.Copy) == DragDropEffects.Copy) value = (T)value.Clone();
152        Content.Value = value;
153      }
154    }
155  }
156}
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