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source: trunk/sources/HeuristicLab.Core.Views/3.3/VariableView.cs @ 14588

Last change on this file since 14588 was 14185, checked in by swagner, 8 years ago

#2526: Updated year of copyrights in license headers

File size: 6.1 KB
RevLine 
[2]1#region License Information
2/* HeuristicLab
[14185]3 * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
[2]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;
[2818]24using HeuristicLab.Common;
[2520]25using HeuristicLab.MainForm;
[3758]26using HeuristicLab.PluginInfrastructure;
[2]27
[2520]28namespace HeuristicLab.Core.Views {
[776]29  /// <summary>
[2655]30  /// The visual representation of a <see cref="Variable"/>.
[776]31  /// </summary>
[2917]32  [View("Variable View")]
[2520]33  [Content(typeof(Variable), true)]
[2727]34  [Content(typeof(IVariable), false)]
[2664]35  public partial class VariableView : NamedItemView {
[2676]36    protected TypeSelectorDialog typeSelectorDialog;
[2]37
[776]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>
[2727]43    public new IVariable Content {
44      get { return (IVariable)base.Content; }
[2713]45      set { base.Content = value; }
[2]46    }
47
[776]48    /// <summary>
49    /// Initializes a new instance of <see cref="VariableView"/> with caption "Variable".
50    /// </summary>
[2]51    public VariableView() {
52      InitializeComponent();
53    }
54
[5237]55    /// <summary>
56    /// Clean up any resources being used.
57    /// </summary>
58    /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
59    protected override void Dispose(bool disposing) {
60      if (disposing) {
61        if (typeSelectorDialog != null) typeSelectorDialog.Dispose();
62        if (components != null) components.Dispose();
63      }
64      base.Dispose(disposing);
65    }
66
[776]67    /// <summary>
[2687]68    /// Removes the eventhandlers from the underlying <see cref="Variable"/>.
[776]69    /// </summary>
70    /// <remarks>Calls <see cref="ViewBase.RemoveItemEvents"/> of base class <see cref="ViewBase"/>.</remarks>
[2713]71    protected override void DeregisterContentEvents() {
72      Content.ValueChanged -= new EventHandler(Content_ValueChanged);
73      base.DeregisterContentEvents();
[2]74    }
[2655]75
[776]76    /// <summary>
[2687]77    /// Adds eventhandlers to the underlying <see cref="Variable"/>.
[776]78    /// </summary>
79    /// <remarks>Calls <see cref="ViewBase.AddItemEvents"/> of base class <see cref="ViewBase"/>.</remarks>
[2713]80    protected override void RegisterContentEvents() {
81      base.RegisterContentEvents();
82      Content.ValueChanged += new EventHandler(Content_ValueChanged);
[2]83    }
84
[2713]85    protected override void OnContentChanged() {
86      base.OnContentChanged();
87      if (Content == null) {
[2655]88        dataTypeTextBox.Text = "-";
[2713]89        viewHost.Content = null;
[2]90      } else {
[2818]91        dataTypeTextBox.Text = Content.Value == null ? "-" : Content.Value.GetType().GetPrettyName();
[2949]92        viewHost.ViewType = null;
[2713]93        viewHost.Content = Content.Value;
[2]94      }
95    }
96
[3904]97    protected override void SetEnabledStateOfControls() {
98      base.SetEnabledStateOfControls();
[3362]99      dataTypeTextBox.Enabled = Content != null && Content.Value != null;
100      setValueButton.Enabled = Content != null && !ReadOnly;
101      clearValueButton.Enabled = Content != null && Content.Value != null && !ReadOnly;
102      valueGroupBox.Enabled = Content != null;
103    }
104
[2713]105    protected virtual void Content_ValueChanged(object sender, EventArgs e) {
[2]106      if (InvokeRequired)
[2713]107        Invoke(new EventHandler(Content_ValueChanged), sender, e);
[2655]108      else {
[2818]109        dataTypeTextBox.Text = Content.Value == null ? "-" : Content.Value.GetType().GetPrettyName();
[2713]110        dataTypeTextBox.Enabled = Content.Value != null;
111        clearValueButton.Enabled = Content.Value != null;
[2949]112        viewHost.ViewType = null;
[2713]113        viewHost.Content = Content.Value;
[2655]114      }
[2]115    }
116
[2676]117    protected virtual void setValueButton_Click(object sender, EventArgs e) {
[2655]118      if (typeSelectorDialog == null) {
119        typeSelectorDialog = new TypeSelectorDialog();
[3407]120        typeSelectorDialog.Caption = "Select Value";
[3588]121        typeSelectorDialog.TypeSelector.Configure(typeof(IItem), false, true);
[2655]122      }
123      if (typeSelectorDialog.ShowDialog(this) == DialogResult.OK) {
[3407]124        try {
125          Content.Value = (IItem)typeSelectorDialog.TypeSelector.CreateInstanceOfSelectedType();
126        }
127        catch (Exception ex) {
[3758]128          ErrorHandling.ShowErrorDialog(this, ex);
[3407]129        }
[2655]130      }
[2]131    }
[2676]132    protected virtual void clearValueButton_Click(object sender, EventArgs e) {
[2713]133      Content.Value = null;
[2655]134    }
[2676]135    protected virtual void valuePanel_DragEnterOver(object sender, DragEventArgs e) {
[2655]136      e.Effect = DragDropEffects.None;
[5837]137      if (!ReadOnly && (e.Data.GetData(HeuristicLab.Common.Constants.DragDropDataFormat) is IItem)) {
[3694]138        if ((e.KeyState & 32) == 32) e.Effect = DragDropEffects.Link;  // ALT key
[2694]139        else if ((e.KeyState & 4) == 4) e.Effect = DragDropEffects.Move;  // SHIFT key
[5744]140        else if (e.AllowedEffect.HasFlag(DragDropEffects.Copy)) e.Effect = DragDropEffects.Copy;
141        else if (e.AllowedEffect.HasFlag(DragDropEffects.Move)) e.Effect = DragDropEffects.Move;
142        else if (e.AllowedEffect.HasFlag(DragDropEffects.Link)) e.Effect = DragDropEffects.Link;
[2]143      }
144    }
[2676]145    protected virtual void valuePanel_DragDrop(object sender, DragEventArgs e) {
[2655]146      if (e.Effect != DragDropEffects.None) {
[5837]147        IItem item = e.Data.GetData(HeuristicLab.Common.Constants.DragDropDataFormat) as IItem;
[5744]148        if (e.Effect.HasFlag(DragDropEffects.Copy)) item = (IItem)item.Clone();
[2713]149        Content.Value = item;
[2655]150      }
151    }
[2]152  }
153}
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