[2653] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[14185] | 3 | * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[2653] | 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System;
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| 23 | using System.Collections.Generic;
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| 24 | using HeuristicLab.Common;
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[2790] | 25 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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[2653] | 26 |
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| 27 | namespace HeuristicLab.Core {
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[3822] | 28 | [Item("NamedItemCollection", "Represents a collection of named items.")]
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[3017] | 29 | [StorableClass]
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[3390] | 30 | public class NamedItemCollection<T> : KeyedItemCollection<string, T> where T : class, INamedItem {
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[4722] | 31 | [StorableConstructor]
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| 32 | protected NamedItemCollection(bool deserializing) : base(deserializing) { }
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| 33 | protected NamedItemCollection(NamedItemCollection<T> original, Cloner cloner)
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| 34 | : base(original, cloner) {
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| 35 | RegisterItemEvents(this);
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| 36 | }
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[2653] | 37 | public NamedItemCollection() : base() { }
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| 38 | public NamedItemCollection(int capacity) : base(capacity) { }
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[4068] | 39 | public NamedItemCollection(IEnumerable<T> collection)
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| 40 | : base(collection) {
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[4722] | 41 | RegisterItemEvents(this);
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[3287] | 42 | }
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| 43 |
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| 44 | [StorableHook(HookType.AfterDeserialization)]
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[4722] | 45 | private void AfterDeserialization() {
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[2830] | 46 | RegisterItemEvents(this);
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| 47 | }
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[2653] | 48 |
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[3390] | 49 | public override IDeepCloneable Clone(Cloner cloner) {
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[4722] | 50 | return new NamedItemCollection<T>(this, cloner);
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[2653] | 51 | }
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| 52 |
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| 53 | protected override string GetKeyForItem(T item) {
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| 54 | return item.Name;
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| 55 | }
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| 56 |
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| 57 | protected override void OnItemsAdded(IEnumerable<T> items) {
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[2830] | 58 | RegisterItemEvents(items);
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[2653] | 59 | base.OnItemsAdded(items);
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| 60 | }
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| 61 | protected override void OnItemsRemoved(IEnumerable<T> items) {
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[2830] | 62 | DeregisterItemEvents(items);
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[2653] | 63 | base.OnItemsRemoved(items);
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| 64 | }
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| 65 | #region NOTE
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| 66 | // NOTE: OnItemsReplaced is not overridden as ItemsReplaced is only fired
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[2676] | 67 | // by ObservableKeyedCollection when the key of an item has changed. The items stays
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[2653] | 68 | // in the collection and therefore the NameChanging, NameChanged and Changed event handler
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| 69 | // do not have to be removed and added again.
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| 70 | #endregion
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| 71 | protected override void OnCollectionReset(IEnumerable<T> items, IEnumerable<T> oldItems) {
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[2830] | 72 | DeregisterItemEvents(oldItems);
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| 73 | RegisterItemEvents(items);
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| 74 | base.OnCollectionReset(items, oldItems);
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| 75 | }
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| 76 |
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[11330] | 77 | protected virtual void RegisterItemEvents(IEnumerable<T> items) {
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[2653] | 78 | foreach (T item in items) {
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[2833] | 79 | if (item != null) {
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| 80 | item.NameChanging += new EventHandler<CancelEventArgs<string>>(Item_NameChanging);
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| 81 | item.NameChanged += new EventHandler(Item_NameChanged);
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| 82 | }
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[2653] | 83 | }
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| 84 | }
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[11330] | 85 | protected virtual void DeregisterItemEvents(IEnumerable<T> items) {
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[2830] | 86 | foreach (T item in items) {
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[2833] | 87 | if (item != null) {
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| 88 | item.NameChanging -= new EventHandler<CancelEventArgs<string>>(Item_NameChanging);
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| 89 | item.NameChanged -= new EventHandler(Item_NameChanged);
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| 90 | }
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[2830] | 91 | }
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[2653] | 92 | }
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| 93 |
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| 94 | private void Item_NameChanging(object sender, CancelEventArgs<string> e) {
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[2669] | 95 | e.Cancel = e.Cancel || this.ContainsKey(e.Value);
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[2653] | 96 | }
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| 97 | private void Item_NameChanged(object sender, EventArgs e) {
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| 98 | T item = (T)sender;
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| 99 | UpdateItemKey(item);
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| 100 | }
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| 101 | }
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| 102 | }
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