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source: trunk/sources/HeuristicLab.Core.Views/3.3/NamedItemCollectionView.cs @ 8959

Last change on this file since 8959 was 7259, checked in by swagner, 13 years ago

Updated year of copyrights to 2012 (#1716)

File size: 5.0 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2012 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.Collections.Generic;
24using System.Linq;
25using System.Windows.Forms;
26using HeuristicLab.Collections;
27using HeuristicLab.MainForm;
28
29namespace HeuristicLab.Core.Views {
30  [View("NamedItemCollection View")]
31  [Content(typeof(NamedItemCollection<>), true)]
32  public partial class NamedItemCollectionView<T> : ItemCollectionView<T> where T : class, INamedItem {
33    public new IKeyedItemCollection<string, T> Content {
34      get { return (IKeyedItemCollection<string, T>)base.Content; }
35      set { base.Content = value; }
36    }
37
38    public NamedItemCollectionView() {
39      InitializeComponent();
40    }
41
42    protected override void DeregisterContentEvents() {
43      Content.ItemsReplaced -= new CollectionItemsChangedEventHandler<T>(Content_ItemsReplaced);
44      base.DeregisterContentEvents();
45    }
46    protected override void RegisterContentEvents() {
47      base.RegisterContentEvents();
48      Content.ItemsReplaced += new CollectionItemsChangedEventHandler<T>(Content_ItemsReplaced);
49    }
50
51    protected override void OnContentChanged() {
52      string selectedName = null;
53      if ((itemsListView.SelectedItems.Count == 1) && (itemsListView.SelectedItems[0].Tag != null &&
54        itemsListView.SelectedItems[0].Tag is T))
55        selectedName = ((T)itemsListView.SelectedItems[0].Tag).Name;
56      base.OnContentChanged();
57      if (selectedName != null) {
58        foreach (ListViewItem item in itemsListView.Items) {
59          if ((item.Tag != null) && (((T)item.Tag).Name.Equals(selectedName)))
60            item.Selected = true;
61        }
62      }
63    }
64
65    protected override T CreateItem() {
66      T item = base.CreateItem();
67      if (item != null) {
68        item.Name = GetUniqueName(item.Name);
69      }
70      return item;
71    }
72    protected override ListViewItem CreateListViewItem(T item) {
73      ListViewItem listViewItem = base.CreateListViewItem(item);
74      if ((item != null) && !string.IsNullOrEmpty(item.Description)) {
75        listViewItem.ToolTipText = item.ItemName + ": " + item.Description;
76      }
77      return listViewItem;
78    }
79    protected override void UpdateListViewItemText(ListViewItem listViewItem) {
80      base.UpdateListViewItemText(listViewItem);
81      T item = listViewItem.Tag as T;
82      if ((item != null) && !string.IsNullOrEmpty(item.Description)) {
83        listViewItem.ToolTipText = item.ItemName + ": " + item.Description;
84      }
85    }
86
87    #region ListView Events
88    protected override void itemsListView_DragEnter(object sender, DragEventArgs e) {
89      base.itemsListView_DragEnter(sender, e);
90      if (validDragOperation) {
91        if (e.Data.GetData(HeuristicLab.Common.Constants.DragDropDataFormat) is T) {
92          validDragOperation = validDragOperation && !Content.ContainsKey(((T)e.Data.GetData(HeuristicLab.Common.Constants.DragDropDataFormat)).Name);
93        } else if (e.Data.GetData(HeuristicLab.Common.Constants.DragDropDataFormat) is IEnumerable) {
94          IEnumerable<T> items = ((IEnumerable)e.Data.GetData(HeuristicLab.Common.Constants.DragDropDataFormat)).Cast<T>();
95          foreach (T item in items)
96            validDragOperation = validDragOperation && !Content.ContainsKey(item.Name);
97        }
98      }
99    }
100    #endregion
101
102    #region Content Events
103    protected virtual void Content_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<T> e) {
104      if (InvokeRequired)
105        Invoke(new CollectionItemsChangedEventHandler<T>(Content_ItemsReplaced), sender, e);
106      else {
107        foreach (T item in e.Items) {
108          foreach (ListViewItem listViewItem in GetListViewItemsForItem(item))
109            UpdateListViewItemText(listViewItem);
110        }
111        AdjustListViewColumnSizes();
112      }
113    }
114    #endregion
115
116    #region Helpers
117    protected virtual string GetUniqueName(string originalName) {
118      if (!Content.ContainsKey(originalName))
119        return originalName;
120      else {
121        string name = null;
122        int index = 0;
123        do {
124          index++;
125          name = originalName + index.ToString();
126        } while (Content.ContainsKey(name));
127        return name;
128      }
129    }
130    #endregion
131  }
132}
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