Free cookie consent management tool by TermsFeed Policy Generator

source: stable/HeuristicLab.Core.Views/3.3/ItemSetView.cs @ 12009

Last change on this file since 12009 was 12009, checked in by ascheibe, 9 years ago

#2212 updated copyright year

File size: 2.9 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2015 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.Collections;
23using System.Windows.Forms;
24using HeuristicLab.MainForm;
25
26namespace HeuristicLab.Core.Views {
27  [View("ItemSet View")]
28  [Content(typeof(ItemSet<>), true)]
29  [Content(typeof(IItemSet<>), false)]
30  public partial class ItemSetView<T> : ItemCollectionView<T> where T : class, IItem {
31    protected bool draggedItemsAlreadyContained;
32
33    public new IItemSet<T> Content {
34      get { return (IItemSet<T>)base.Content; }
35      set { base.Content = value; }
36    }
37
38    public ItemSetView() {
39      InitializeComponent();
40    }
41
42    protected override void itemsListView_DragEnter(object sender, DragEventArgs e) {
43      base.itemsListView_DragEnter(sender, e);
44      draggedItemsAlreadyContained = false;
45      if (validDragOperation) {
46        if (e.Data.GetData(HeuristicLab.Common.Constants.DragDropDataFormat) is T) {
47          draggedItemsAlreadyContained = Content.Contains((T)e.Data.GetData(HeuristicLab.Common.Constants.DragDropDataFormat));
48        } else if (e.Data.GetData(HeuristicLab.Common.Constants.DragDropDataFormat) is IEnumerable) {
49          IEnumerable items = (IEnumerable)e.Data.GetData(HeuristicLab.Common.Constants.DragDropDataFormat);
50          foreach (object item in items)
51            draggedItemsAlreadyContained = draggedItemsAlreadyContained || Content.Contains((T)item);
52        }
53      }
54    }
55    protected override void itemsListView_DragOver(object sender, DragEventArgs e) {
56      e.Effect = DragDropEffects.None;
57      if (validDragOperation) {
58        if (((e.KeyState & 32) == 32) && !draggedItemsAlreadyContained) e.Effect = DragDropEffects.Link;  // ALT key
59        else if (((e.KeyState & 4) == 4) && !draggedItemsAlreadyContained) e.Effect = DragDropEffects.Move;  // SHIFT key
60        else if (e.AllowedEffect.HasFlag(DragDropEffects.Copy)) e.Effect = DragDropEffects.Copy;
61        else if (e.AllowedEffect.HasFlag(DragDropEffects.Move) && !draggedItemsAlreadyContained) e.Effect = DragDropEffects.Move;
62        else if (e.AllowedEffect.HasFlag(DragDropEffects.Link) && !draggedItemsAlreadyContained) e.Effect = DragDropEffects.Link;
63      }
64    }
65  }
66}
Note: See TracBrowser for help on using the repository browser.