Changeset 3317 for trunk/sources/HeuristicLab.Collections/3.3/ReadOnlyObservableList.cs

Timestamp:

04/13/10 06:41:56 (14 years ago)

Author:

swagner

Message:

Implemented ReadOnlyView property for items (#969).

File:

• trunk/sources/HeuristicLab.Collections/3.3/ReadOnlyObservableList.cs (modified) (10 diffs)

trunk/sources/HeuristicLab.Collections/3.3/ReadOnlyObservableList.cs

@@ -34 +34 @@
 
     #region Properties
+    public bool ReadOnlyView {
+      get { return true; }
+      set { throw new NotSupportedException(); }
+    }
+
     public int Count {
       get { return ((ICollection<T>)list).Count; }
@@ -119 +124 @@
     }
 
+    event EventHandler IObservableCollection<T>.ReadOnlyViewChanged {
+      add { }
+      remove { }
+    }
+
     [field: NonSerialized]
     public event CollectionItemsChangedEventHandler<IndexedItem<T>> ItemsAdded;
     protected virtual void OnItemsAdded(IEnumerable<IndexedItem<T>> items) {
-      if (ItemsAdded != null)
-        ItemsAdded(this, new CollectionItemsChangedEventArgs<IndexedItem<T>>(items));
+      CollectionItemsChangedEventHandler<IndexedItem<T>> handler = ItemsAdded;
+      if (handler != null) handler(this, new CollectionItemsChangedEventArgs<IndexedItem<T>>(items));
     }
 
@@ -133 +143 @@
     }
     private void OnItemsAdded(IEnumerable<T> items) {
-      if (itemsAdded != null)
-        itemsAdded(this, new CollectionItemsChangedEventArgs<T>(items));
+      CollectionItemsChangedEventHandler<T> handler = itemsAdded;
+      if (handler != null) handler(this, new CollectionItemsChangedEventArgs<T>(items));
     }
 
@@ -140 +150 @@
     public event CollectionItemsChangedEventHandler<IndexedItem<T>> ItemsRemoved;
     protected virtual void OnItemsRemoved(IEnumerable<IndexedItem<T>> items) {
-      if (ItemsRemoved != null)
-        ItemsRemoved(this, new CollectionItemsChangedEventArgs<IndexedItem<T>>(items));
+      CollectionItemsChangedEventHandler<IndexedItem<T>> handler = ItemsRemoved;
+      if (handler != null) handler(this, new CollectionItemsChangedEventArgs<IndexedItem<T>>(items));
     }
 
@@ -151 +161 @@
     }
     private void OnItemsRemoved(IEnumerable<T> items) {
-      if (itemsRemoved != null)
-        itemsRemoved(this, new CollectionItemsChangedEventArgs<T>(items));
+      CollectionItemsChangedEventHandler<T> handler = itemsRemoved;
+      if (handler != null) handler(this, new CollectionItemsChangedEventArgs<T>(items));
     }
 
@@ -158 +168 @@
     public event CollectionItemsChangedEventHandler<IndexedItem<T>> ItemsReplaced;
     protected virtual void OnItemsReplaced(IEnumerable<IndexedItem<T>> items, IEnumerable<IndexedItem<T>> oldItems) {
-      if (ItemsReplaced != null)
-        ItemsReplaced(this, new CollectionItemsChangedEventArgs<IndexedItem<T>>(items, oldItems));
+      CollectionItemsChangedEventHandler<IndexedItem<T>> handler = ItemsReplaced;
+      if (handler != null) handler(this, new CollectionItemsChangedEventArgs<IndexedItem<T>>(items, oldItems));
     }
 
@@ -165 +175 @@
     public event CollectionItemsChangedEventHandler<IndexedItem<T>> ItemsMoved;
     protected virtual void OnItemsMoved(IEnumerable<IndexedItem<T>> items, IEnumerable<IndexedItem<T>> oldItems) {
-      if (ItemsMoved != null)
-        ItemsMoved(this, new CollectionItemsChangedEventArgs<IndexedItem<T>>(items, oldItems));
+      CollectionItemsChangedEventHandler<IndexedItem<T>> handler = ItemsMoved;
+      if (handler != null) handler(this, new CollectionItemsChangedEventArgs<IndexedItem<T>>(items, oldItems));
     }
 
@@ -172 +182 @@
     public event CollectionItemsChangedEventHandler<IndexedItem<T>> CollectionReset;
     protected virtual void OnCollectionReset(IEnumerable<IndexedItem<T>> items, IEnumerable<IndexedItem<T>> oldItems) {
-      if (CollectionReset != null)
-        CollectionReset(this, new CollectionItemsChangedEventArgs<IndexedItem<T>>(items, oldItems));
+      CollectionItemsChangedEventHandler<IndexedItem<T>> handler = CollectionReset;
+      if (handler != null) handler(this, new CollectionItemsChangedEventArgs<IndexedItem<T>>(items, oldItems));
     }
 
@@ -183 +193 @@
     }
     private void OnCollectionReset(IEnumerable<T> items, IEnumerable<T> oldItems) {
-      if (collectionReset != null)
-        collectionReset(this, new CollectionItemsChangedEventArgs<T>(items, oldItems));
+      CollectionItemsChangedEventHandler<T> handler = collectionReset;
+      if (handler != null) handler(this, new CollectionItemsChangedEventArgs<T>(items, oldItems));
     }
 
@@ -190 +200 @@
     public event PropertyChangedEventHandler PropertyChanged;
     protected virtual void OnPropertyChanged(string propertyName) {
-      if (PropertyChanged != null)
-        PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
+      PropertyChangedEventHandler handler = PropertyChanged;
+      if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
     }