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source: trunk/sources/HeuristicLab.Core.Views/3.3/NamedItemCollectionView.cs @ 2714

Last change on this file since 2714 was 2713, checked in by swagner, 15 years ago

Adapted HL 3.3 plugins according to changes in MainForm (#857)

File size: 4.2 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2008 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.Collections.Generic;
24using System.ComponentModel;
25using System.Data;
26using System.Drawing;
27using System.Text;
28using System.Windows.Forms;
29using HeuristicLab.Collections;
30using HeuristicLab.Common;
31using HeuristicLab.MainForm;
32
33namespace HeuristicLab.Core.Views {
34  public partial class NamedItemCollectionView<T> : ItemCollectionView<T> where T : class, INamedItem {
35    public new IObservableKeyedCollection<string, T> Content {
36      get { return (IObservableKeyedCollection<string, T>)base.Content; }
37      set { base.Content = value; }
38    }
39
40    private Dictionary<T, ListViewItem> listViewItemDictionary;
41    protected Dictionary<T, ListViewItem> ListViewItemDictionary {
42      get { return listViewItemDictionary; }
43    }
44
45    public NamedItemCollectionView() {
46      listViewItemDictionary = new Dictionary<T, ListViewItem>();
47      InitializeComponent();
48      Caption = "Named Item Collection";
49    }
50
51    protected override void DeregisterContentEvents() {
52      Content.ItemsReplaced -= new CollectionItemsChangedEventHandler<T>(Content_ItemsReplaced);
53      base.DeregisterContentEvents();
54    }
55    protected override void RegisterContentEvents() {
56      base.RegisterContentEvents();
57      Content.ItemsReplaced += new CollectionItemsChangedEventHandler<T>(Content_ItemsReplaced);
58    }
59
60    protected override T CreateItem() {
61      T item = base.CreateItem();
62      if (item != null) {
63        item.Name = GetUniqueName(item.Name);
64      }
65      return item;
66    }
67    protected override void AddListViewItem(ListViewItem listViewItem) {
68      ListViewItemDictionary.Add((T)listViewItem.Tag, listViewItem);
69      base.AddListViewItem(listViewItem);
70    }
71    protected override void RemoveListViewItem(ListViewItem listViewItem) {
72      base.RemoveListViewItem(listViewItem);
73      ListViewItemDictionary.Remove((T)listViewItem.Tag);
74    }
75    protected override IEnumerable<ListViewItem> GetListViewItemsForItem(T item) {
76      return new ListViewItem[] { listViewItemDictionary[item] };
77    }
78 
79    #region ListView Events
80    protected override void itemsListView_DragEnterOver(object sender, DragEventArgs e) {
81      base.itemsListView_DragEnterOver(sender, e);
82      if (e.Effect != DragDropEffects.None) {
83        T item = e.Data.GetData("Value") as T;
84        if ((item == null) || (Content.ContainsKey(item.Name)))
85          e.Effect = DragDropEffects.None;
86      }
87    }
88    #endregion
89
90    #region Content Events
91    protected virtual void Content_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<T> e) {
92      if (InvokeRequired)
93        Invoke(new CollectionItemsChangedEventHandler<T>(Content_ItemsReplaced), sender, e);
94      else {
95        foreach (T item in e.Items) {
96          foreach (ListViewItem listViewItem in GetListViewItemsForItem(item))
97            UpdateListViewItem(listViewItem);
98        }
99      }
100    }
101    #endregion
102
103    #region Helpers
104    protected virtual string GetUniqueName(string originalName) {
105      if (!Content.ContainsKey(originalName))
106        return originalName;
107      else {
108        string name = null;
109        int index = 0;
110        do {
111          index++;
112          name = originalName + index.ToString();
113        } while (Content.ContainsKey(name));
114        return name;
115      }
116    }
117    #endregion
118  }
119}
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