Allow to specified a specific delay for reclaiming pages in ReclaimPagesWA and PaginationManager

Author: Jean-Denis Kreiss

AlphaChiTech.Virtualization.Net4/PaginationManager.cs

@@ -146,8 +146,8 @@ public PaginationManager(IPagedSourceProvider<T> provider,
             int maxPages = 100,
             int maxDeltas = -1,
             int maxDistance = -1,
-            string sectionContext = ""
-            )
+            string sectionContext = "",
+            TimeSpan? delayBetweenReclaims = null)
         {
             this.PageSize = pageSize;
             this.MaxPages = maxPages;
@@ -174,7 +174,7 @@ public PaginationManager(IPagedSourceProvider<T> provider,
 
             this.ExpiryComparer = expiryComparer;
 
-            VirtualizationManager.Instance.AddAction(new ReclaimPagesWA(this, sectionContext));
+            VirtualizationManager.Instance.AddAction(new ReclaimPagesWA(this, sectionContext, delayBetweenReclaims));
         }
 
 

AlphaChiTech.Virtualization.Net4/ReclaimPagesWA.cs

@@ -7,8 +7,8 @@ namespace AlphaChiTech.Virtualization
 {
     public class ReclaimPagesWA : BaseRepeatableActionVirtualization
     {
-        public ReclaimPagesWA(IReclaimableService provider, string sectionContext)
-            : base(VirtualActionThreadModelEnum.Background, true, TimeSpan.FromMinutes(1))
+        public ReclaimPagesWA(IReclaimableService provider, string sectionContext, TimeSpan? delayBetweenReclaims)
+            : base(VirtualActionThreadModelEnum.Background, true, delayBetweenReclaims ?? TimeSpan.FromMinutes(1))
         {
             _WRProvider = new WeakReference(provider);
         }

AlphaChiTech.Virtualization.Net4/VirtualizingObservableCollection.cs

@@ -511,7 +511,7 @@ public bool SupressEventErrors
         /// <param name="args">The <see cref="NotifyCollectionChangedEventArgs"/> instance containing the event data.</param>
         internal void RaiseCollectionChangedEvent(NotifyCollectionChangedEventArgs args)
         {
-            Application.Current.Dispatcher.BeginInvoke(new Action(() =>
+            Application.Current.Dispatcher.Invoke(new Action(() =>
             {
                 if (_BulkCount > 0) return;