Interface for LookupContext

LazyComboBox.WPF/LazyComboBox.WPF.csproj

@@ -54,7 +54,7 @@
     <Reference Include="PresentationFramework" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="GenderType.cs" />
+    <Compile Include="LookupContext.cs" />
     <Compile Include="SelectedItemChangedEventArgs.cs" />
     <Page Include="Themes\Dark.xaml">
       <SubType>Designer</SubType>
@@ -73,7 +73,7 @@
   <ItemGroup>
     <Compile Include="DependencyObjectExtensions.cs" />
     <Compile Include="LazyComboBox.cs" />
-    <Compile Include="LookupContext.cs" />
+    <Compile Include="LookupContextImpl.cs" />
     <Compile Include="Properties\AssemblyInfo.cs">
       <SubType>Code</SubType>
     </Compile>

LazyComboBox.WPF/LazyComboBox.cs

@@ -31,7 +31,7 @@ public class LazyComboBox : Control, INotifyPropertyChanged
 
 		private ICollectionView _itemsView;
 
-		private LookupContext _lastContext;
+		private LookupContextImpl _lastContext;
 
 		private int _lastIdx = -1;
 
@@ -434,7 +434,7 @@ private IEnumerable<object> TryLocateCandidatesByText(string text)
 			}
 		}
 
-		private void ExecuteLookup(LookupContext ctx, bool async = true, bool selectFirstCandidate = false)
+		private void ExecuteLookup(LookupContextImpl ctx, bool async = true, bool selectFirstCandidate = false)
 		{
 #if DEBUG
 			var source = new StackFrame(1).GetMethod().ToString();
@@ -449,7 +449,7 @@ private void ExecuteLookup(LookupContext ctx, bool async = true, bool selectFirs
 			_token = new CancellationTokenSource();
 
 			var input = _textBox?.Text;
-			ctx = ctx ?? new LookupContext(input, _token.Token, null, this);
+			ctx = ctx ?? new LookupContextImpl(input, _token.Token, null, this);
 
 			ListUpdating = true;
 			Action x = () =>

LazyComboBox.WPF/LookupContext.cs

@@ -1,64 +1,54 @@
 using System.Collections;
 using System.Threading;
 
-// ReSharper disable UnusedAutoPropertyAccessor.Global
-
 namespace uTILLIty.Controls.WPF.LazyComboBox
 {
-	/// <summary>
-	///   The context passed to the <see cref="LazyComboBox.LookupAction" /> delegate, when the <see cref="LazyComboBox" />
-	///   needs to populate the popup-list
-	/// </summary>
-	public class LookupContext
-	{
-		internal LookupContext(string input, CancellationToken token, object tag, LazyComboBox cb)
-		{
-			SelectedItem = cb.SelectedItem;
-			Input = input;
-			CancellationToken = token;
-			Tag = tag;
-		}
-
-		/// <summary>
-		///   The currently <see cref="LazyComboBox.SelectedItem">selected item</see> of the <see cref="LazyComboBox" />
-		/// </summary>
-		public object SelectedItem { get; private set; }
-
-		/// <summary>
-		///   The user's input into the Textbox field of the <see cref="LazyComboBox" />
-		/// </summary>
-		public string Input { get; private set; }
-
-		/// <summary>
-		///   A <see cref="CancellationToken" /> to periodically check for cancellation, in case the user continued
-		///   to enter data and a new lookup-request needs to be started
-		/// </summary>
-		public CancellationToken CancellationToken { get; private set; }
-
-		/// <summary>
-		///   An arbitrary state-object which is passed on subsequent requests to <see cref="LazyComboBox.LookupAction" />, if the
-		///   <see cref="NextPageRequested" /> property is set to true
-		/// </summary>
-		public object Tag { get; set; }
-
-		/// <summary>
-		///   Requests the next page to be loaded, because the user has scrolled to the end of the current list and your
-		///   <see cref="LazyComboBox.LookupAction" /> has set <see cref="MoreDataAvailable" /> to true on the last run.
-		///   After loading the next page, you should add the newly loaded page to the end of the <see cref="LoadedList" />
-		/// </summary>
-		public bool NextPageRequested { get; internal set; }
-
-		/// <summary>
-		///   The list of records returned by the <see cref="LazyComboBox.LookupAction" /> delegate. The current list is also
-		///   pre-populated,
-		///   if <see cref="NextPageRequested" /> is set to true
-		/// </summary>
-		public IEnumerable LoadedList { get; set; }
-
-		/// <summary>
-		///   Set by the <see cref="LazyComboBox.LookupAction" /> delegate to indicate that more records are available
-		///   and can be requested for the current <see cref="Input" />
-		/// </summary>
-		public bool MoreDataAvailable { get; set; }
-	}
+    /// <summary>
+    ///   The context passed to the <see cref="LazyComboBox.LookupAction" /> delegate, when the <see cref="LazyComboBox" />
+    ///   needs to populate the popup-list
+    /// </summary>
+    public interface LookupContext
+    {
+        /// <summary>
+        ///   A <see cref="CancellationToken" /> to periodically check for cancellation, in case the user continued
+        ///   to enter data and a new lookup-request needs to be started
+        /// </summary>
+        CancellationToken CancellationToken { get; }
+
+        /// <summary>
+        ///   The user's input into the Textbox field of the <see cref="LazyComboBox" />
+        /// </summary>
+        string Input { get; }
+
+        /// <summary>
+        ///   The list of records returned by the <see cref="LazyComboBox.LookupAction" /> delegate. The current list is also
+        ///   pre-populated,
+        ///   if <see cref="NextPageRequested" /> is set to true
+        /// </summary>
+        IEnumerable LoadedList { get; set; }
+
+        /// <summary>
+        ///   Set by the <see cref="LazyComboBox.LookupAction" /> delegate to indicate that more records are available
+        ///   and can be requested for the current <see cref="Input" />
+        /// </summary>
+        bool MoreDataAvailable { get; set; }
+
+        /// <summary>
+        ///   Requests the next page to be loaded, because the user has scrolled to the end of the current list and your
+        ///   <see cref="LazyComboBox.LookupAction" /> has set <see cref="MoreDataAvailable" /> to true on the last run.
+        ///   After loading the next page, you should add the newly loaded page to the end of the <see cref="LoadedList" />
+        /// </summary>
+        bool NextPageRequested { get; }
+
+        /// <summary>
+        ///   The currently <see cref="LazyComboBox.SelectedItem">selected item</see> of the <see cref="LazyComboBox" />
+        /// </summary>
+        object SelectedItem { get; }
+
+        /// <summary>
+        ///   An arbitrary state-object which is passed on subsequent requests to <see cref="LazyComboBox.LookupAction" />, if the
+        ///   <see cref="NextPageRequested" /> property is set to true
+        /// </summary>
+        object Tag { get; set; }
+    }
 }

LazyComboBox.WPF/LookupContextImpl.cs

@@ -0,0 +1,64 @@
+using System.Collections;
+using System.Threading;
+
+// ReSharper disable UnusedAutoPropertyAccessor.Global
+
+namespace uTILLIty.Controls.WPF.LazyComboBox
+{
+	/// <summary>
+	///   The context passed to the <see cref="LazyComboBox.LookupAction" /> delegate, when the <see cref="LazyComboBox" />
+	///   needs to populate the popup-list
+	/// </summary>
+	internal class LookupContextImpl : LookupContext
+    {
+		internal LookupContextImpl(string input, CancellationToken token, object tag, LazyComboBox cb)
+		{
+			SelectedItem = cb.SelectedItem;
+			Input = input;
+			CancellationToken = token;
+			Tag = tag;
+		}
+
+		/// <summary>
+		///   The currently <see cref="LazyComboBox.SelectedItem">selected item</see> of the <see cref="LazyComboBox" />
+		/// </summary>
+		public object SelectedItem { get; private set; }
+
+		/// <summary>
+		///   The user's input into the Textbox field of the <see cref="LazyComboBox" />
+		/// </summary>
+		public string Input { get; private set; }
+
+		/// <summary>
+		///   A <see cref="CancellationToken" /> to periodically check for cancellation, in case the user continued
+		///   to enter data and a new lookup-request needs to be started
+		/// </summary>
+		public CancellationToken CancellationToken { get; private set; }
+
+		/// <summary>
+		///   An arbitrary state-object which is passed on subsequent requests to <see cref="LazyComboBox.LookupAction" />, if the
+		///   <see cref="NextPageRequested" /> property is set to true
+		/// </summary>
+		public object Tag { get; set; }
+
+		/// <summary>
+		///   Requests the next page to be loaded, because the user has scrolled to the end of the current list and your
+		///   <see cref="LazyComboBox.LookupAction" /> has set <see cref="MoreDataAvailable" /> to true on the last run.
+		///   After loading the next page, you should add the newly loaded page to the end of the <see cref="LoadedList" />
+		/// </summary>
+		public bool NextPageRequested { get; internal set; }
+
+		/// <summary>
+		///   The list of records returned by the <see cref="LazyComboBox.LookupAction" /> delegate. The current list is also
+		///   pre-populated,
+		///   if <see cref="NextPageRequested" /> is set to true
+		/// </summary>
+		public IEnumerable LoadedList { get; set; }
+
+		/// <summary>
+		///   Set by the <see cref="LazyComboBox.LookupAction" /> delegate to indicate that more records are available
+		///   and can be requested for the current <see cref="Input" />
+		/// </summary>
+		public bool MoreDataAvailable { get; set; }
+	}
+}

LazyComboBox.WPF/GenderType.cs → WPF.DemoApplication/GenderType.cs

@@ -1,6 +1,6 @@
 using System.ComponentModel;
 
-namespace uTILLIty.Controls.WPF.LazyComboBox
+namespace uTILLIty.WPF.Demo
 {
 	public enum GenderType
 	{

WPF.DemoApplication/WPF.DemoApplication.csproj

@@ -71,6 +71,7 @@
     <Compile Include="ApplicationHelper.cs" />
     <Compile Include="CompanyInfo.cs" />
     <Compile Include="EnumItem.cs" />
+    <Compile Include="GenderType.cs" />
     <Compile Include="MainWindow.xaml.cs">
       <DependentUpon>MainWindow.xaml</DependentUpon>
       <SubType>Code</SubType>