Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

external/rx/Rx/NET/Source/System.Reactive.Windows.Threading/GlobalSuppressions.cs

@@ -0,0 +1,14 @@
+// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
+
+// This file is used by Code Analysis to maintain SuppressMessage 
+// attributes that are applied to this project.
+// Project-level suppressions either have no target or are given 
+// a specific target and scoped to a namespace, type, member, etc.
+//
+// To add a suppression to this file, right-click the message in the 
+// Error List, point to "Suppress Message(s)", and click 
+// "In Project Suppression File".
+// You do not need to add suppressions to this file manually.
+
+[assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1016:MarkAssembliesWithAssemblyVersion", Justification = "Taken care of by lab build.")]
+[assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA2210:AssembliesShouldHaveValidStrongNames", Justification = "Taken care of by lab build.")]

external/rx/Rx/NET/Source/System.Reactive.Windows.Threading/Properties/AssemblyInfo.cs

@@ -0,0 +1,44 @@
+using System;
+using System.Reflection;
+using System.Resources;
+using System.Runtime.InteropServices;
+using System.Security;
+
+[assembly: AssemblyTitle("System.Reactive.Windows.Threading")]
+#if !USE_SL_DISPATCHER
+// Notice: same description as in the .nuspec files; see Source/Rx/Setup/NuGet
+[assembly: AssemblyDescription("Windows Presentation Foundation extensions library for Rx. Contains scheduler functionality for the WPF Dispatcher.")]
+#else
+// Notice: same description as in the .nuspec files; see Source/Rx/Setup/NuGet
+[assembly: AssemblyDescription("Silverlight extensions library for Rx. Contains scheduler functionality for the Silverlight Dispatcher.")]
+#endif
+#if DEBUG
+[assembly: AssemblyConfiguration("Debug")]
+#else
+[assembly: AssemblyConfiguration("Retail")]
+#endif
+[assembly: AssemblyCompany("Microsoft Open Technologies, Inc.")]
+[assembly: AssemblyProduct("Reactive Extensions")]
+[assembly: AssemblyCopyright("\x00a9 Microsoft Open Technologies, Inc.  All rights reserved.")]
+[assembly: NeutralResourcesLanguage("en-US")]
+
+#if !PLIB
+[assembly: ComVisible(false)]
+#endif
+
+#if !WINDOWS
+[assembly: CLSCompliant(true)]
+#endif
+
+#if HAS_APTCA && NO_CODECOVERAGE
+[assembly: AllowPartiallyTrustedCallers]
+#endif
+
+// ===========================================================================
+//  DO NOT EDIT OR REMOVE ANYTHING BELOW THIS COMMENT.
+//  Version numbers are automatically generated in the msbuild files based on regular expressions 
+// ===========================================================================
+
+[assembly: AssemblyVersion("2.2.0.0")]
+[assembly: AssemblyFileVersion("2.2.0.0")]
+[assembly: AssemblyInformationalVersion("2.2.0.0")]

external/rx/Rx/NET/Source/System.Reactive.Windows.Threading/Reactive/Concurrency/CoreDispatcherScheduler.cs

@@ -0,0 +1,239 @@
+// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
+
+#if WINDOWS
+using System.Reactive.Concurrency;
+using System.Reactive.Disposables;
+using System.Runtime.ExceptionServices;
+using System.Threading;
+using Windows.UI.Core;
+using Windows.UI.Xaml;
+
+namespace System.Reactive.Concurrency
+{
+    /// <summary>
+    /// Represents an object that schedules units of work on a Windows.UI.Core.CoreDispatcher.
+    /// </summary>
+    /// <remarks>
+    /// This scheduler type is typically used indirectly through the <see cref="System.Reactive.Linq.DispatcherObservable.ObserveOnDispatcher&lt;TSource&gt;(IObservable&lt;TSource&gt;)"/> and <see cref="System.Reactive.Linq.DispatcherObservable.SubscribeOnDispatcher&lt;TSource&gt;(IObservable&lt;TSource&gt;)"/> methods that use the current Dispatcher.
+    /// </remarks>
+    public sealed class CoreDispatcherScheduler : LocalScheduler, ISchedulerPeriodic
+    {
+        private readonly CoreDispatcher _dispatcher;
+        private readonly CoreDispatcherPriority _priority;
+
+        /// <summary>
+        /// Constructs a CoreDispatcherScheduler that schedules units of work on the given Windows.UI.Core.CoreDispatcher.
+        /// </summary>
+        /// <param name="dispatcher">Dispatcher to schedule work on.</param>
+        /// <exception cref="ArgumentNullException"><paramref name="dispatcher"/> is null.</exception>
+        public CoreDispatcherScheduler(CoreDispatcher dispatcher)
+        {
+            if (dispatcher == null)
+                throw new ArgumentNullException("dispatcher");
+
+            _dispatcher = dispatcher;
+            _priority = CoreDispatcherPriority.Normal;
+        }
+
+        /// <summary>
+        /// Constructs a CoreDispatcherScheduler that schedules units of work on the given Windows.UI.Core.CoreDispatcher with the given priority.
+        /// </summary>
+        /// <param name="dispatcher">Dispatcher to schedule work on.</param>
+        /// <param name="priority">Priority for scheduled units of work.</param>
+        /// <exception cref="ArgumentNullException"><paramref name="dispatcher"/> is null.</exception>
+        public CoreDispatcherScheduler(CoreDispatcher dispatcher, CoreDispatcherPriority priority)
+        {
+            if (dispatcher == null)
+                throw new ArgumentNullException("dispatcher");
+
+            _dispatcher = dispatcher;
+            _priority = priority;
+        }
+
+        /// <summary>
+        /// Gets the scheduler that schedules work on the Windows.UI.Core.CoreDispatcher associated with the current Window.
+        /// </summary>
+        public static CoreDispatcherScheduler Current
+        {
+            get
+            {
+                var window = Window.Current;
+                if (window == null)
+                    throw new InvalidOperationException(Strings_WindowsThreading.NO_WINDOW_CURRENT);
+
+                return new CoreDispatcherScheduler(window.Dispatcher);
+            }
+        }
+
+        /// <summary>
+        /// Gets the Windows.UI.Core.CoreDispatcher associated with the CoreDispatcherScheduler.
+        /// </summary>
+        public CoreDispatcher Dispatcher
+        {
+            get { return _dispatcher; }
+        }
+
+        /// <summary>
+        /// Gets the priority at which work is scheduled.
+        /// </summary>
+        public CoreDispatcherPriority Priority
+        {
+            get { return _priority; }
+        }
+
+        /// <summary>
+        /// Schedules an action to be executed on the dispatcher.
+        /// </summary>
+        /// <typeparam name="TState">The type of the state passed to the scheduled action.</typeparam>
+        /// <param name="state">State passed to the action to be executed.</param>
+        /// <param name="action">Action to be executed.</param>
+        /// <returns>The disposable object used to cancel the scheduled action (best effort).</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="action"/> is null.</exception>
+        public override IDisposable Schedule<TState>(TState state, Func<IScheduler, TState, IDisposable> action)
+        {
+            if (action == null)
+                throw new ArgumentNullException("action");
+
+            var d = new SingleAssignmentDisposable();
+
+            var res = _dispatcher.RunAsync(_priority, () =>
+            {
+                if (!d.IsDisposed)
+                {
+                    try
+                    {
+                        d.Disposable = action(this, state);
+                    }
+                    catch (Exception ex)
+                    {
+                        //
+                        // Work-around for the behavior of throwing from RunAsync not propagating
+                        // the exception to the Application.UnhandledException event (as of W8RP)
+                        // as our users have come to expect from previous XAML stacks using Rx.
+                        //
+                        // If we wouldn't do this, there'd be an observable behavioral difference
+                        // between scheduling with TimeSpan.Zero or using this overload.
+                        //
+                        // For scheduler implementation guidance rules, see TaskPoolScheduler.cs
+                        // in System.Reactive.PlatformServices\Reactive\Concurrency.
+                        //
+                        var timer = new DispatcherTimer();
+                        timer.Interval = TimeSpan.Zero;
+                        timer.Tick += (o, e) =>
+                        {
+                            timer.Stop();
+                            ExceptionDispatchInfo.Capture(ex).Throw();
+                        };
+
+                        timer.Start();
+                    }
+                }
+            });
+
+            return new CompositeDisposable(
+                d,
+                Disposable.Create(res.Cancel)
+            );
+        }
+
+        /// <summary>
+        /// Schedules an action to be executed after dueTime on the dispatcher, using a Windows.UI.Xaml.DispatcherTimer object.
+        /// </summary>
+        /// <typeparam name="TState">The type of the state passed to the scheduled action.</typeparam>
+        /// <param name="state">State passed to the action to be executed.</param>
+        /// <param name="action">Action to be executed.</param>
+        /// <param name="dueTime">Relative time after which to execute the action.</param>
+        /// <returns>The disposable object used to cancel the scheduled action (best effort).</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="action"/> is null.</exception>
+        public override IDisposable Schedule<TState>(TState state, TimeSpan dueTime, Func<IScheduler, TState, IDisposable> action)
+        {
+            if (action == null)
+                throw new ArgumentNullException("action");
+
+            var dt = Scheduler.Normalize(dueTime);
+            if (dt.Ticks == 0)
+                return Schedule(state, action);
+
+            var d = new MultipleAssignmentDisposable();
+
+            var timer = new DispatcherTimer();
+
+            timer.Tick += (o, e) =>
+            {
+                var t = Interlocked.Exchange(ref timer, null);
+                if (t != null)
+                {
+                    try
+                    {
+                        d.Disposable = action(this, state);
+                    }
+                    finally
+                    {
+                        t.Stop();
+                        action = null;
+                    }
+                }
+            };
+
+            timer.Interval = dt;
+            timer.Start();
+
+            d.Disposable = Disposable.Create(() =>
+            {
+                var t = Interlocked.Exchange(ref timer, null);
+                if (t != null)
+                {
+                    t.Stop();
+                    action = (_, __) => Disposable.Empty;
+                }
+            });
+
+            return d;
+        }
+
+        /// <summary>
+        /// Schedules a periodic piece of work on the dispatcher, using a Windows.UI.Xaml.DispatcherTimer object.
+        /// </summary>
+        /// <typeparam name="TState">The type of the state passed to the scheduled action.</typeparam>
+        /// <param name="state">Initial state passed to the action upon the first iteration.</param>
+        /// <param name="period">Period for running the work periodically.</param>
+        /// <param name="action">Action to be executed, potentially updating the state.</param>
+        /// <returns>The disposable object used to cancel the scheduled recurring action (best effort).</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="action"/> is null.</exception>
+        /// <exception cref="ArgumentOutOfRangeException"><paramref name="period"/> is less than TimeSpan.Zero.</exception>
+        public IDisposable SchedulePeriodic<TState>(TState state, TimeSpan period, Func<TState, TState> action)
+        {
+            //
+            // According to MSDN documentation, the default is TimeSpan.Zero, so that's definitely valid.
+            // Empirical observation - negative values seem to be normalized to TimeSpan.Zero, but let's not go there.
+            //
+            if (period < TimeSpan.Zero)
+                throw new ArgumentOutOfRangeException("period");
+            if (action == null)
+                throw new ArgumentNullException("action");
+
+            var timer = new DispatcherTimer();
+
+            var state1 = state;
+
+            timer.Tick += (o, e) =>
+            {
+                state1 = action(state1);
+            };
+
+            timer.Interval = period;
+            timer.Start();
+
+            return Disposable.Create(() =>
+            {
+                var t = Interlocked.Exchange(ref timer, null);
+                if (t != null)
+                {
+                    t.Stop();
+                    action = _ => _;
+                }
+            });
+        }
+    }
+}
+#endif

external/rx/Rx/NET/Source/System.Reactive.Windows.Threading/Reactive/Concurrency/DispatcherScheduler.cs

@@ -0,0 +1,248 @@
+// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
+
+#if !WINDOWS
+using System.Reactive.Disposables;
+using System.Threading;
+
+namespace System.Reactive.Concurrency
+{
+    /// <summary>
+    /// Represents an object that schedules units of work on a <see cref="System.Windows.Threading.Dispatcher"/>.
+    /// </summary>
+    /// <remarks>
+    /// This scheduler type is typically used indirectly through the <see cref="System.Reactive.Linq.DispatcherObservable.ObserveOnDispatcher&lt;TSource&gt;(IObservable&lt;TSource&gt;)"/> and <see cref="System.Reactive.Linq.DispatcherObservable.SubscribeOnDispatcher&lt;TSource&gt;(IObservable&lt;TSource&gt;)"/> methods that use the Dispatcher on the calling thread.
+    /// </remarks>
+    public class DispatcherScheduler : LocalScheduler, ISchedulerPeriodic
+    {
+        /// <summary>
+        /// Gets the scheduler that schedules work on the current <see cref="System.Windows.Threading.Dispatcher"/>.
+        /// </summary>
+        [Obsolete(Constants_WindowsThreading.OBSOLETE_INSTANCE_PROPERTY)]
+        public static DispatcherScheduler Instance
+        {
+            get
+            {
+                return new DispatcherScheduler(
+#if USE_SL_DISPATCHER
+                    System.Windows.Deployment.Current.Dispatcher
+#else
+                    System.Windows.Threading.Dispatcher.CurrentDispatcher
+#endif
+                );
+            }
+        }
+
+        /// <summary>
+        /// Gets the scheduler that schedules work on the <see cref="System.Windows.Threading.Dispatcher"/> for the current thread.
+        /// </summary>
+        public static DispatcherScheduler Current
+        {
+            get
+            {
+#if USE_SL_DISPATCHER
+                return new DispatcherScheduler(System.Windows.Deployment.Current.Dispatcher);
+#else
+                var dispatcher = System.Windows.Threading.Dispatcher.FromThread(Thread.CurrentThread);
+                if (dispatcher == null)
+                    throw new InvalidOperationException(Strings_WindowsThreading.NO_DISPATCHER_CURRENT_THREAD);
+
+                return new DispatcherScheduler(dispatcher);
+#endif
+            }
+        }
+
+        System.Windows.Threading.Dispatcher _dispatcher;
+
+#if HAS_DISPATCHER_PRIORITY
+        System.Windows.Threading.DispatcherPriority _priority;
+#endif
+
+        /// <summary>
+        /// Constructs a DispatcherScheduler that schedules units of work on the given <see cref="System.Windows.Threading.Dispatcher"/>.
+        /// </summary>
+        /// <param name="dispatcher">Dispatcher to schedule work on.</param>
+        /// <exception cref="ArgumentNullException"><paramref name="dispatcher"/> is null.</exception>
+        public DispatcherScheduler(System.Windows.Threading.Dispatcher dispatcher)
+        {
+            if (dispatcher == null)
+                throw new ArgumentNullException("dispatcher");
+
+            _dispatcher = dispatcher;
+#if HAS_DISPATCHER_PRIORITY
+            _priority = Windows.Threading.DispatcherPriority.Normal;
+#endif
+        }
+
+#if HAS_DISPATCHER_PRIORITY
+        /// <summary>
+        /// Constructs a DispatcherScheduler that schedules units of work on the given <see cref="System.Windows.Threading.Dispatcher"/> at the given priority.
+        /// </summary>
+        /// <param name="dispatcher">Dispatcher to schedule work on.</param>
+        /// <param name="priority">Priority at which units of work are scheduled.</param>
+        /// <exception cref="ArgumentNullException"><paramref name="dispatcher"/> is null.</exception>
+        public DispatcherScheduler(System.Windows.Threading.Dispatcher dispatcher, System.Windows.Threading.DispatcherPriority priority)
+        {
+            if (dispatcher == null)
+                throw new ArgumentNullException("dispatcher");
+
+            _dispatcher = dispatcher;
+            _priority = priority;
+        }
+#endif
+
+        /// <summary>
+        /// Gets the <see cref="System.Windows.Threading.Dispatcher"/> associated with the DispatcherScheduler.
+        /// </summary>
+        public System.Windows.Threading.Dispatcher Dispatcher
+        {
+            get { return _dispatcher; }
+        }
+
+#if HAS_DISPATCHER_PRIORITY
+        /// <summary>
+        /// Gets the priority at which work items will be dispatched.
+        /// </summary>
+        public System.Windows.Threading.DispatcherPriority Priority
+        {
+            get { return _priority; }
+        }
+#endif
+
+        /// <summary>
+        /// Schedules an action to be executed on the dispatcher.
+        /// </summary>
+        /// <typeparam name="TState">The type of the state passed to the scheduled action.</typeparam>
+        /// <param name="state">State passed to the action to be executed.</param>
+        /// <param name="action">Action to be executed.</param>
+        /// <returns>The disposable object used to cancel the scheduled action (best effort).</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="action"/> is null.</exception>
+        public override IDisposable Schedule<TState>(TState state, Func<IScheduler, TState, IDisposable> action)
+        {
+            if (action == null)
+                throw new ArgumentNullException("action");
+
+            var d = new SingleAssignmentDisposable();
+
+            _dispatcher.BeginInvoke(
+                new Action(() =>
+                {
+                    if (!d.IsDisposed)
+                        d.Disposable = action(this, state);
+                })
+#if HAS_DISPATCHER_PRIORITY
+                , _priority
+#endif
+            );
+
+            return d;
+        }
+
+        /// <summary>
+        /// Schedules an action to be executed after dueTime on the dispatcher, using a <see cref="System.Windows.Threading.DispatcherTimer"/> object.
+        /// </summary>
+        /// <typeparam name="TState">The type of the state passed to the scheduled action.</typeparam>
+        /// <param name="state">State passed to the action to be executed.</param>
+        /// <param name="action">Action to be executed.</param>
+        /// <param name="dueTime">Relative time after which to execute the action.</param>
+        /// <returns>The disposable object used to cancel the scheduled action (best effort).</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="action"/> is null.</exception>
+        public override IDisposable Schedule<TState>(TState state, TimeSpan dueTime, Func<IScheduler, TState, IDisposable> action)
+        {
+            if (action == null)
+                throw new ArgumentNullException("action");
+
+            var dt = Scheduler.Normalize(dueTime);
+            if (dt.Ticks == 0)
+                return Schedule(state, action);
+
+            var d = new MultipleAssignmentDisposable();
+
+            var timer = new System.Windows.Threading.DispatcherTimer(
+#if HAS_DISPATCHER_PRIORITY
+                _priority, _dispatcher
+#elif DESKTOPCLR40 // BACKWARDS COMPATIBILITY with v1.x
+                System.Windows.Threading.DispatcherPriority.Background, _dispatcher
+#endif
+            );
+
+            timer.Tick += (s, e) =>
+            {
+                var t = Interlocked.Exchange(ref timer, null);
+                if (t != null)
+                {
+                    try
+                    {
+                        d.Disposable = action(this, state);
+                    }
+                    finally
+                    {
+                        t.Stop();
+                        action = null;
+                    }
+                }
+            };
+
+            timer.Interval = dt;
+            timer.Start();
+
+            d.Disposable = Disposable.Create(() =>
+            {
+                var t = Interlocked.Exchange(ref timer, null);
+                if (t != null)
+                {
+                    t.Stop();
+                    action = (_, __) => Disposable.Empty;
+                }
+            });
+
+            return d;
+        }
+
+        /// <summary>
+        /// Schedules a periodic piece of work on the dispatcher, using a <see cref="System.Windows.Threading.DispatcherTimer"/> object.
+        /// </summary>
+        /// <typeparam name="TState">The type of the state passed to the scheduled action.</typeparam>
+        /// <param name="state">Initial state passed to the action upon the first iteration.</param>
+        /// <param name="period">Period for running the work periodically.</param>
+        /// <param name="action">Action to be executed, potentially updating the state.</param>
+        /// <returns>The disposable object used to cancel the scheduled recurring action (best effort).</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="action"/> is null.</exception>
+        /// <exception cref="ArgumentOutOfRangeException"><paramref name="period"/> is less than TimeSpan.Zero.</exception>
+        public IDisposable SchedulePeriodic<TState>(TState state, TimeSpan period, Func<TState, TState> action)
+        {
+            if (period < TimeSpan.Zero)
+                throw new ArgumentOutOfRangeException("period");
+            if (action == null)
+                throw new ArgumentNullException("action");
+
+            var timer = new System.Windows.Threading.DispatcherTimer(
+#if HAS_DISPATCHER_PRIORITY
+                _priority, _dispatcher
+#elif DESKTOPCLR40 // BACKWARDS COMPATIBILITY with v1.x
+                System.Windows.Threading.DispatcherPriority.Background, _dispatcher
+#endif
+            );
+
+            var state1 = state;
+
+            timer.Tick += (s, e) =>
+            {
+                state1 = action(state1);
+            };
+
+            timer.Interval = period;
+            timer.Start();
+
+            return Disposable.Create(() =>
+            {
+                var t = Interlocked.Exchange(ref timer, null);
+                if (t != null)
+                {
+                    t.Stop();
+                    action = _ => _;
+                }
+            });
+        }
+    }
+}
+#endif

external/rx/Rx/NET/Source/System.Reactive.Windows.Threading/Reactive/Internal/Constants.cs

@@ -0,0 +1,13 @@
+// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
+
+namespace System.Reactive
+{
+    // We can't make those based on the Strings_WindowsThreading.resx file, because the ObsoleteAttribute needs a compile-time constant.
+
+    static class Constants_WindowsThreading
+    {
+#if !WINDOWS
+        public const string OBSOLETE_INSTANCE_PROPERTY = "Use the Current property to retrieve the DispatcherScheduler instance for the current thread's Dispatcher object. See http://go.microsoft.com/fwlink/?LinkID=260866 for more information.";
+#endif
+    }
+}

external/rx/Rx/NET/Source/System.Reactive.Windows.Threading/Reactive/Linq/CoreDispatcherObservable.cs

@@ -0,0 +1,258 @@
+// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
+
+#if WINDOWS
+using System.Reactive.Concurrency;
+using Windows.UI.Core;
+using Windows.UI.Xaml;
+
+namespace System.Reactive.Linq
+{
+    /// <summary>
+    /// Provides a set of extension methods for scheduling actions performed through observable sequences on UI dispatchers.
+    /// </summary>
+    public static class DispatcherObservable
+    {
+        #region ObserveOn[Dispatcher]
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its observer callbacks on the specified dispatcher.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dispatcher">Dispatcher whose associated message loop is used to notify observers on.</param>
+        /// <returns>The source sequence whose observations happen on the specified dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dispatcher"/> is null.</exception>
+        public static IObservable<TSource> ObserveOn<TSource>(this IObservable<TSource> source, CoreDispatcher dispatcher)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dispatcher == null)
+                throw new ArgumentNullException("dispatcher");
+
+            return Synchronization.ObserveOn(source, new CoreDispatcherScheduler(dispatcher));
+        }
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its observer callbacks on the specified dispatcher.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dispatcher">Dispatcher whose associated message loop is used to notify observers on.</param>
+        /// <param name="priority">Priority to schedule work items at.</param>
+        /// <returns>The source sequence whose observations happen on the specified dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dispatcher"/> is null.</exception>
+        public static IObservable<TSource> ObserveOn<TSource>(this IObservable<TSource> source, CoreDispatcher dispatcher, CoreDispatcherPriority priority)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dispatcher == null)
+                throw new ArgumentNullException("dispatcher");
+
+            return Synchronization.ObserveOn(source, new CoreDispatcherScheduler(dispatcher, priority));
+        }
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its observer callbacks on the dispatcher associated with the specified object.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dependencyObject">Object to get the dispatcher from.</param>
+        /// <returns>The source sequence whose observations happen on the specified object's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dependencyObject"/> is null.</exception>
+        public static IObservable<TSource> ObserveOn<TSource>(this IObservable<TSource> source, DependencyObject dependencyObject)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dependencyObject == null)
+                throw new ArgumentNullException("dependencyObject");
+
+            return Synchronization.ObserveOn(source, new CoreDispatcherScheduler(dependencyObject.Dispatcher));
+        }
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its observer callbacks on the dispatcher associated with the specified object.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dependencyObject">Object to get the dispatcher from.</param>
+        /// <param name="priority">Priority to schedule work items at.</param>
+        /// <returns>The source sequence whose observations happen on the specified object's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dependencyObject"/> is null.</exception>
+        public static IObservable<TSource> ObserveOn<TSource>(this IObservable<TSource> source, DependencyObject dependencyObject, CoreDispatcherPriority priority)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dependencyObject == null)
+                throw new ArgumentNullException("dependencyObject");
+
+            return Synchronization.ObserveOn(source, new CoreDispatcherScheduler(dependencyObject.Dispatcher, priority));
+        }
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its observer callbacks on the dispatcher associated with the current window.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <returns>The source sequence whose observations happen on the current window's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> is null.</exception>
+        public static IObservable<TSource> ObserveOnDispatcher<TSource>(this IObservable<TSource> source)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+
+            return Synchronization.ObserveOn(source, CoreDispatcherScheduler.Current);
+        }
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its observer callbacks on the dispatcher associated with the current window.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="priority">Priority to schedule work items at.</param>
+        /// <returns>The source sequence whose observations happen on the current window's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> is null.</exception>
+        public static IObservable<TSource> ObserveOnDispatcher<TSource>(this IObservable<TSource> source, CoreDispatcherPriority priority)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+
+            return Synchronization.ObserveOn(source, new CoreDispatcherScheduler(CoreDispatcherScheduler.Current.Dispatcher, priority));
+        }
+
+        #endregion
+
+        #region SubscribeOn[Dispatcher]
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its subscription and unsubscription logic on the specified dispatcher.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dispatcher">Dispatcher whose associated message loop is used to perform subscription and unsubscription actions on.</param>
+        /// <returns>The source sequence whose subscriptions and unsubscriptions happen on the specified dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dispatcher"/> is null.</exception>
+        /// <remarks>
+        /// Only the side-effects of subscribing to the source sequence and disposing subscriptions to the source sequence are run on the specified dispatcher.
+        /// In order to invoke observer callbacks on the specified dispatcher, e.g. to render results in a control, use <see cref="DispatcherObservable.ObserveOn{TSource}(IObservable{TSource}, CoreDispatcher)"/>.
+        /// </remarks>
+        public static IObservable<TSource> SubscribeOn<TSource>(this IObservable<TSource> source, CoreDispatcher dispatcher)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dispatcher == null)
+                throw new ArgumentNullException("dispatcher");
+
+            return Synchronization.SubscribeOn(source, new CoreDispatcherScheduler(dispatcher));
+        }
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its subscription and unsubscription logic on the specified dispatcher.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dispatcher">Dispatcher whose associated message loop is used to perform subscription and unsubscription actions on.</param>
+        /// <param name="priority">Priority to schedule work items at.</param>
+        /// <returns>The source sequence whose subscriptions and unsubscriptions happen on the specified dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dispatcher"/> is null.</exception>
+        /// <remarks>
+        /// Only the side-effects of subscribing to the source sequence and disposing subscriptions to the source sequence are run on the specified dispatcher.
+        /// In order to invoke observer callbacks on the specified dispatcher, e.g. to render results in a control, use <see cref="DispatcherObservable.ObserveOn{TSource}(IObservable{TSource}, CoreDispatcher, CoreDispatcherPriority)"/>.
+        /// </remarks>
+        public static IObservable<TSource> SubscribeOn<TSource>(this IObservable<TSource> source, CoreDispatcher dispatcher, CoreDispatcherPriority priority)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dispatcher == null)
+                throw new ArgumentNullException("dispatcher");
+
+            return Synchronization.SubscribeOn(source, new CoreDispatcherScheduler(dispatcher, priority));
+        }
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its subscription and unsubscription logic on the dispatcher associated with the specified object.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dependencyObject">Object to get the dispatcher from.</param>
+        /// <returns>The source sequence whose subscriptions and unsubscriptions happen on the specified object's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dependencyObject"/> is null.</exception>
+        /// <remarks>
+        /// Only the side-effects of subscribing to the source sequence and disposing subscriptions to the source sequence are run on the dispatcher associated with the specified object.
+        /// In order to invoke observer callbacks on the dispatcher associated with the specified object, e.g. to render results in a control, use <see cref="DispatcherObservable.ObserveOn{TSource}(IObservable{TSource}, DependencyObject)"/>.
+        /// </remarks>
+        public static IObservable<TSource> SubscribeOn<TSource>(this IObservable<TSource> source, DependencyObject dependencyObject)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dependencyObject == null)
+                throw new ArgumentNullException("dependencyObject");
+
+            return Synchronization.SubscribeOn(source, new CoreDispatcherScheduler(dependencyObject.Dispatcher));
+        }
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its subscription and unsubscription logic on the dispatcher associated with the specified object.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dependencyObject">Object to get the dispatcher from.</param>
+        /// <param name="priority">Priority to schedule work items at.</param>
+        /// <returns>The source sequence whose subscriptions and unsubscriptions happen on the specified object's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dependencyObject"/> is null.</exception>
+        /// <remarks>
+        /// Only the side-effects of subscribing to the source sequence and disposing subscriptions to the source sequence are run on the dispatcher associated with the specified object.
+        /// In order to invoke observer callbacks on the dispatcher associated with the specified object, e.g. to render results in a control, use <see cref="DispatcherObservable.ObserveOn{TSource}(IObservable{TSource}, DependencyObject, CoreDispatcherPriority)"/>.
+        /// </remarks>
+        public static IObservable<TSource> SubscribeOn<TSource>(this IObservable<TSource> source, DependencyObject dependencyObject, CoreDispatcherPriority priority)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dependencyObject == null)
+                throw new ArgumentNullException("dependencyObject");
+
+            return Synchronization.SubscribeOn(source, new CoreDispatcherScheduler(dependencyObject.Dispatcher, priority));
+        }
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its subscription and unsubscription logic on the dispatcher associated with the current window.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <returns>The source sequence whose subscriptions and unsubscriptions happen on the current window's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> is null.</exception>
+        /// <remarks>
+        /// Only the side-effects of subscribing to the source sequence and disposing subscriptions to the source sequence are run on the dispatcher associated with the current window.
+        /// In order to invoke observer callbacks on the dispatcher associated with the current window, e.g. to render results in a control, use <see cref="DispatcherObservable.ObserveOnDispatcher{TSource}(IObservable{TSource})"/>.
+        /// </remarks>
+        public static IObservable<TSource> SubscribeOnDispatcher<TSource>(this IObservable<TSource> source)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+
+            return Synchronization.SubscribeOn(source, CoreDispatcherScheduler.Current);
+        }
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its subscription and unsubscription logic on the dispatcher associated with the current window.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="priority">Priority to schedule work items at.</param>
+        /// <returns>The source sequence whose subscriptions and unsubscriptions happen on the current window's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> is null.</exception>
+        /// <remarks>
+        /// Only the side-effects of subscribing to the source sequence and disposing subscriptions to the source sequence are run on the dispatcher associated with the current window.
+        /// In order to invoke observer callbacks on the dispatcher associated with the current window, e.g. to render results in a control, use <see cref="DispatcherObservable.ObserveOnDispatcher{TSource}(IObservable{TSource}, CoreDispatcherPriority)"/>.
+        /// </remarks>
+        public static IObservable<TSource> SubscribeOnDispatcher<TSource>(this IObservable<TSource> source, CoreDispatcherPriority priority)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+
+            return Synchronization.SubscribeOn(source, new CoreDispatcherScheduler(CoreDispatcherScheduler.Current.Dispatcher, priority));
+        }
+
+        #endregion
+    }
+}
+#endif

external/rx/Rx/NET/Source/System.Reactive.Windows.Threading/Reactive/Linq/DispatcherObservable.cs

@@ -0,0 +1,390 @@
+// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
+
+#if !WINDOWS
+using System.Reactive.Concurrency;
+using System.Windows;
+using System.Windows.Threading;
+
+namespace System.Reactive.Linq
+{
+    /// <summary>
+    /// Provides a set of extension methods for scheduling actions performed through observable sequences on UI dispatchers.
+    /// </summary>
+    public static class DispatcherObservable
+    {
+        #region ObserveOn[Dispatcher]
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its observer callbacks on the specified dispatcher.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dispatcher">Dispatcher whose associated message loop is used to to notify observers on.</param>
+        /// <returns>The source sequence whose observations happen on the specified dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dispatcher"/> is null.</exception>
+        public static IObservable<TSource> ObserveOn<TSource>(this IObservable<TSource> source, Dispatcher dispatcher)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dispatcher == null)
+                throw new ArgumentNullException("dispatcher");
+
+            return ObserveOn_<TSource>(source, dispatcher);
+        }
+
+#if HAS_DISPATCHER_PRIORITY
+        /// <summary>
+        /// Wraps the source sequence in order to run its observer callbacks on the specified dispatcher.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dispatcher">Dispatcher whose associated message loop is used to to notify observers on.</param>
+        /// <param name="priority">Priority to schedule work items at.</param>
+        /// <returns>The source sequence whose observations happen on the specified dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dispatcher"/> is null.</exception>
+        public static IObservable<TSource> ObserveOn<TSource>(this IObservable<TSource> source, Dispatcher dispatcher, DispatcherPriority priority)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dispatcher == null)
+                throw new ArgumentNullException("dispatcher");
+
+            return ObserveOn_<TSource>(source, dispatcher, priority);
+        }
+#endif
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its observer callbacks on the specified dispatcher scheduler.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="scheduler">Dispatcher scheduler to notify observers on.</param>
+        /// <returns>The source sequence whose observations happen on the specified dispatcher scheduler.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="scheduler"/> is null.</exception>
+        public static IObservable<TSource> ObserveOn<TSource>(this IObservable<TSource> source, DispatcherScheduler scheduler)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (scheduler == null)
+                throw new ArgumentNullException("scheduler");
+
+#if HAS_DISPATCHER_PRIORITY
+            return ObserveOn_<TSource>(source, scheduler.Dispatcher, scheduler.Priority);
+#else
+            return ObserveOn_<TSource>(source, scheduler.Dispatcher);
+#endif
+        }
+
+#if USE_SL_DISPATCHER
+        /// <summary>
+        /// Wraps the source sequence in order to run its observer callbacks on the dispatcher associated with the specified object.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dependencyObject">Object to get the dispatcher from.</param>
+        /// <returns>The source sequence whose observations happen on the specified object's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dependencyObject"/> is null.</exception>
+        public static IObservable<TSource> ObserveOn<TSource>(this IObservable<TSource> source, DependencyObject dependencyObject)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dependencyObject == null)
+                throw new ArgumentNullException("dependencyObject");
+
+            return ObserveOn_<TSource>(source, dependencyObject.Dispatcher);
+        }
+#else
+        /// <summary>
+        /// Wraps the source sequence in order to run its observer callbacks on the dispatcher associated with the specified object.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dispatcherObject">Object to get the dispatcher from.</param>
+        /// <returns>The source sequence whose observations happen on the specified object's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dispatcherObject"/> is null.</exception>
+        public static IObservable<TSource> ObserveOn<TSource>(this IObservable<TSource> source, DispatcherObject dispatcherObject)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dispatcherObject == null)
+                throw new ArgumentNullException("dispatcherObject");
+
+            return ObserveOn_<TSource>(source, dispatcherObject.Dispatcher);
+        }
+#endif
+
+#if HAS_DISPATCHER_PRIORITY
+        /// <summary>
+        /// Wraps the source sequence in order to run its observer callbacks on the dispatcher associated with the specified object.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dispatcherObject">Object to get the dispatcher from.</param>
+        /// <param name="priority">Priority to schedule work items at.</param>
+        /// <returns>The source sequence whose observations happen on the specified object's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dispatcherObject"/> is null.</exception>
+        public static IObservable<TSource> ObserveOn<TSource>(this IObservable<TSource> source, DispatcherObject dispatcherObject, DispatcherPriority priority)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dispatcherObject == null)
+                throw new ArgumentNullException("dispatcherObject");
+
+            return ObserveOn_<TSource>(source, dispatcherObject.Dispatcher, priority);
+        }
+#endif
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its observer callbacks on the dispatcher associated with the current thread.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <returns>The source sequence whose observations happen on the current thread's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> is null.</exception>
+        public static IObservable<TSource> ObserveOnDispatcher<TSource>(this IObservable<TSource> source)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+
+#if USE_SL_DISPATCHER
+            return ObserveOn_<TSource>(source, System.Windows.Deployment.Current.Dispatcher);
+#else
+            return ObserveOn_<TSource>(source, DispatcherScheduler.Current.Dispatcher);
+#endif
+        }
+
+#if HAS_DISPATCHER_PRIORITY
+        /// <summary>
+        /// Wraps the source sequence in order to run its observer callbacks on the dispatcher associated with the current thread.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="priority">Priority to schedule work items at.</param>
+        /// <returns>The source sequence whose observations happen on the current thread's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> is null.</exception>
+        public static IObservable<TSource> ObserveOnDispatcher<TSource>(this IObservable<TSource> source, DispatcherPriority priority)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+
+            return ObserveOn_<TSource>(source, DispatcherScheduler.Current.Dispatcher, priority);
+        }
+
+        private static IObservable<TSource> ObserveOn_<TSource>(IObservable<TSource> source, Dispatcher dispatcher, DispatcherPriority priority)
+        {
+            return Synchronization.ObserveOn(source, new DispatcherSynchronizationContext(dispatcher, priority));
+        }
+#endif
+
+        private static IObservable<TSource> ObserveOn_<TSource>(IObservable<TSource> source, Dispatcher dispatcher)
+        {
+            return Synchronization.ObserveOn(source, new DispatcherSynchronizationContext(dispatcher));
+        }
+
+        #endregion
+
+        #region SubscribeOn[Dispatcher]
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its subscription and unsubscription logic on the specified dispatcher.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dispatcher">Dispatcher whose associated message loop is used to to perform subscription and unsubscription actions on.</param>
+        /// <returns>The source sequence whose subscriptions and unsubscriptions happen on the specified dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dispatcher"/> is null.</exception>
+        /// <remarks>
+        /// Only the side-effects of subscribing to the source sequence and disposing subscriptions to the source sequence are run on the specified dispatcher.
+        /// In order to invoke observer callbacks on the specified dispatcher, e.g. to render results in a control, use <see cref="DispatcherObservable.ObserveOn{TSource}(IObservable{TSource}, Dispatcher)"/>.
+        /// </remarks>
+        public static IObservable<TSource> SubscribeOn<TSource>(this IObservable<TSource> source, Dispatcher dispatcher)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dispatcher == null)
+                throw new ArgumentNullException("dispatcher");
+
+            return SubscribeOn_<TSource>(source, dispatcher);
+        }
+
+#if HAS_DISPATCHER_PRIORITY
+        /// <summary>
+        /// Wraps the source sequence in order to run its subscription and unsubscription logic on the specified dispatcher.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dispatcher">Dispatcher whose associated message loop is used to to perform subscription and unsubscription actions on.</param>
+        /// <param name="priority">Priority to schedule work items at.</param>
+        /// <returns>The source sequence whose subscriptions and unsubscriptions happen on the specified dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dispatcher"/> is null.</exception>
+        /// <remarks>
+        /// Only the side-effects of subscribing to the source sequence and disposing subscriptions to the source sequence are run on the specified dispatcher.
+        /// In order to invoke observer callbacks on the specified dispatcher, e.g. to render results in a control, use <see cref="DispatcherObservable.ObserveOn{TSource}(IObservable{TSource}, Dispatcher, DispatcherPriority)"/>.
+        /// </remarks>
+        public static IObservable<TSource> SubscribeOn<TSource>(this IObservable<TSource> source, Dispatcher dispatcher, DispatcherPriority priority)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dispatcher == null)
+                throw new ArgumentNullException("dispatcher");
+
+            return SubscribeOn_<TSource>(source, dispatcher, priority);
+        }
+#endif
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its subscription and unsubscription logic on the specified dispatcher scheduler.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="scheduler">Dispatcher scheduler to perform subscription and unsubscription actions on.</param>
+        /// <returns>The source sequence whose subscriptions and unsubscriptions happen on the specified dispatcher scheduler.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="scheduler"/> is null.</exception>
+        /// <remarks>
+        /// Only the side-effects of subscribing to the source sequence and disposing subscriptions to the source sequence are run on the specified scheduler.
+        /// In order to invoke observer callbacks on the specified scheduler, e.g. to render results in a control, use <see cref="DispatcherObservable.ObserveOn{TSource}(IObservable{TSource}, DispatcherScheduler)"/>.
+        /// </remarks>
+        public static IObservable<TSource> SubscribeOn<TSource>(this IObservable<TSource> source, DispatcherScheduler scheduler)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (scheduler == null)
+                throw new ArgumentNullException("scheduler");
+
+#if HAS_DISPATCHER_PRIORITY
+            return SubscribeOn_<TSource>(source, scheduler.Dispatcher, scheduler.Priority);
+#else
+            return SubscribeOn_<TSource>(source, scheduler.Dispatcher);
+#endif
+        }
+
+#if USE_SL_DISPATCHER
+        /// <summary>
+        /// Wraps the source sequence in order to run its subscription and unsubscription logic on the dispatcher associated with the specified object.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dependencyObject">Object to get the dispatcher from.</param>
+        /// <returns>The source sequence whose subscriptions and unsubscriptions happen on the specified object's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dependencyObject"/> is null.</exception>
+        /// <remarks>
+        /// Only the side-effects of subscribing to the source sequence and disposing subscriptions to the source sequence are run on the dispatcher associated with the specified object.
+        /// In order to invoke observer callbacks on the dispatcher associated with the specified object, e.g. to render results in a control, use <see cref="DispatcherObservable.ObserveOn{TSource}(IObservable{TSource}, DependencyObject)"/>.
+        /// </remarks>
+        public static IObservable<TSource> SubscribeOn<TSource>(this IObservable<TSource> source, DependencyObject dependencyObject)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dependencyObject == null)
+                throw new ArgumentNullException("dependencyObject");
+
+            return SubscribeOn_<TSource>(source, dependencyObject.Dispatcher);
+        }
+#else
+        /// <summary>
+        /// Wraps the source sequence in order to run its subscription and unsubscription logic on the dispatcher associated with the specified object.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dispatcherObject">Object to get the dispatcher from.</param>
+        /// <returns>The source sequence whose subscriptions and unsubscriptions happen on the specified object's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dispatcherObject"/> is null.</exception>
+        /// <remarks>
+        /// Only the side-effects of subscribing to the source sequence and disposing subscriptions to the source sequence are run on the dispatcher associated with the specified object.
+        /// In order to invoke observer callbacks on the dispatcher associated with the specified object, e.g. to render results in a control, use <see cref="DispatcherObservable.ObserveOn{TSource}(IObservable{TSource}, DispatcherObject)"/>.
+        /// </remarks>
+        public static IObservable<TSource> SubscribeOn<TSource>(this IObservable<TSource> source, DispatcherObject dispatcherObject)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dispatcherObject == null)
+                throw new ArgumentNullException("dispatcherObject");
+
+            return SubscribeOn_<TSource>(source, dispatcherObject.Dispatcher);
+        }
+#endif
+
+#if HAS_DISPATCHER_PRIORITY
+        /// <summary>
+        /// Wraps the source sequence in order to run its subscription and unsubscription logic on the dispatcher associated with the specified object.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="dispatcherObject">Object to get the dispatcher from.</param>
+        /// <param name="priority">Priority to schedule work items at.</param>
+        /// <returns>The source sequence whose subscriptions and unsubscriptions happen on the specified object's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="dispatcherObject"/> is null.</exception>
+        /// <remarks>
+        /// Only the side-effects of subscribing to the source sequence and disposing subscriptions to the source sequence are run on the dispatcher associated with the specified object.
+        /// In order to invoke observer callbacks on the dispatcher associated with the specified object, e.g. to render results in a control, use <see cref="DispatcherObservable.ObserveOn{TSource}(IObservable{TSource}, DispatcherObject, DispatcherPriority)"/>.
+        /// </remarks>
+        public static IObservable<TSource> SubscribeOn<TSource>(this IObservable<TSource> source, DispatcherObject dispatcherObject, DispatcherPriority priority)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+            if (dispatcherObject == null)
+                throw new ArgumentNullException("dispatcherObject");
+
+            return SubscribeOn_<TSource>(source, dispatcherObject.Dispatcher, priority);
+        }
+#endif
+
+        /// <summary>
+        /// Wraps the source sequence in order to run its subscription and unsubscription logic on the dispatcher associated with the current thread.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <returns>The source sequence whose subscriptions and unsubscriptions happen on the current thread's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> is null.</exception>
+        /// <remarks>
+        /// Only the side-effects of subscribing to the source sequence and disposing subscriptions to the source sequence are run on the dispatcher associated with the current thread.
+        /// In order to invoke observer callbacks on the dispatcher associated with the current thread, e.g. to render results in a control, use <see cref="DispatcherObservable.ObserveOnDispatcher{TSource}(IObservable{TSource})"/>.
+        /// </remarks>
+        public static IObservable<TSource> SubscribeOnDispatcher<TSource>(this IObservable<TSource> source)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+
+#if USE_SL_DISPATCHER
+            return SubscribeOn_<TSource>(source, System.Windows.Deployment.Current.Dispatcher);
+#else
+            return SubscribeOn_<TSource>(source, DispatcherScheduler.Current.Dispatcher);
+#endif
+        }
+
+#if HAS_DISPATCHER_PRIORITY
+        /// <summary>
+        /// Wraps the source sequence in order to run its subscription and unsubscription logic on the dispatcher associated with the current thread.
+        /// </summary>
+        /// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
+        /// <param name="source">Source sequence.</param>
+        /// <param name="priority">Priority to schedule work items at.</param>
+        /// <returns>The source sequence whose observations happen on the current thread's dispatcher.</returns>
+        /// <exception cref="ArgumentNullException"><paramref name="source"/> is null.</exception>
+        /// <remarks>
+        /// Only the side-effects of subscribing to the source sequence and disposing subscriptions to the source sequence are run on the dispatcher associated with the current thread.
+        /// In order to invoke observer callbacks on the dispatcher associated with the current thread, e.g. to render results in a control, use <see cref="DispatcherObservable.ObserveOnDispatcher{TSource}(IObservable{TSource}, DispatcherPriority)"/>.
+        /// </remarks>
+        public static IObservable<TSource> SubscribeOnDispatcher<TSource>(this IObservable<TSource> source, DispatcherPriority priority)
+        {
+            if (source == null)
+                throw new ArgumentNullException("source");
+
+            return SubscribeOn_<TSource>(source, DispatcherScheduler.Current.Dispatcher, priority);
+        }
+
+        private static IObservable<TSource> SubscribeOn_<TSource>(IObservable<TSource> source, Dispatcher dispatcher, DispatcherPriority priority)
+        {
+            return Synchronization.SubscribeOn(source, new DispatcherSynchronizationContext(dispatcher, priority));
+        }
+#endif
+
+        private static IObservable<TSource> SubscribeOn_<TSource>(IObservable<TSource> source, Dispatcher dispatcher)
+        {
+            return Synchronization.SubscribeOn(source, new DispatcherSynchronizationContext(dispatcher));
+        }
+
+        #endregion
+    }
+}
+#endif

external/rx/Rx/NET/Source/System.Reactive.Windows.Threading/Strings_WindowsThreading.Generated.cs

@@ -0,0 +1,106 @@
+/*
+ * This file is manually generated upon every change to the corresponding .resx file, using the built-in code generator.
+ * However, we can't use auto-generated code because the output is different for .NET 4.5 for Metro and PLIB, due to
+ * changes in the reflection APIs (search for CRIPPLED_REFLECTION in this file), and because regeneration doesn't happen
+ * as part of build, but rather at design time in Visual Studio. While we likely could tweak MSBuild to force regeneration
+ * using the right version of ResGen.exe, this approach turned out to be the easiest for the time being.
+ * 
+ * Upon adding entries to the ResX file, regenerate this file, put this comment back, and make sure to add the #if checks
+ * for conditional use of the right flavor of reflection (using the CRIPPLED_REFLECTION defined symbol).
+ */
+
+// Required for the use of the GetTypeInfo extension method.
+#if CRIPPLED_REFLECTION
+using System.Reflection;
+#endif
+
+// GENERATED CODE starts here
+
+namespace System.Reactive
+{
+    using System;
+
+
+    /// <summary>
+    ///   A strongly-typed resource class, for looking up localized strings, etc.
+    /// </summary>
+    // This class was auto-generated by the StronglyTypedResourceBuilder
+    // class via a tool like ResGen or Visual Studio.
+    // To add or remove a member, edit your .ResX file then rerun ResGen
+    // with the /str option, or rebuild your VS project.
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    internal class Strings_WindowsThreading
+    {
+
+        private static global::System.Resources.ResourceManager resourceMan;
+
+        private static global::System.Globalization.CultureInfo resourceCulture;
+
+        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Strings_WindowsThreading()
+        {
+        }
+
+        /// <summary>
+        ///   Returns the cached ResourceManager instance used by this class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Resources.ResourceManager ResourceManager
+        {
+            get
+            {
+                if (object.ReferenceEquals(resourceMan, null))
+                {
+#if CRIPPLED_REFLECTION
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("System.Reactive.Strings_WindowsThreading", typeof(Strings_WindowsThreading).GetTypeInfo().Assembly);
+#else
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("System.Reactive.Strings_WindowsThreading", typeof(Strings_WindowsThreading).Assembly);
+#endif
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+
+        /// <summary>
+        ///   Overrides the current thread's CurrentUICulture property for all
+        ///   resource lookups using this strongly typed resource class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Globalization.CultureInfo Culture
+        {
+            get
+            {
+                return resourceCulture;
+            }
+            set
+            {
+                resourceCulture = value;
+            }
+        }
+
+        /// <summary>
+        ///   Looks up a localized string similar to The current thread has no Dispatcher associated with it..
+        /// </summary>
+        internal static string NO_DISPATCHER_CURRENT_THREAD
+        {
+            get
+            {
+                return ResourceManager.GetString("NO_DISPATCHER_CURRENT_THREAD", resourceCulture);
+            }
+        }
+
+        /// <summary>
+        ///   Looks up a localized string similar to No current Window object found to obtain a CoreDispatcher from..
+        /// </summary>
+        internal static string NO_WINDOW_CURRENT
+        {
+            get
+            {
+                return ResourceManager.GetString("NO_WINDOW_CURRENT", resourceCulture);
+            }
+        }
+    }
+}

external/rx/Rx/NET/Source/System.Reactive.Windows.Threading/Strings_WindowsThreading.resx

@@ -0,0 +1,128 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <data name="NO_DISPATCHER_CURRENT_THREAD" xml:space="preserve">
+    <value>The current thread has no Dispatcher associated with it.</value>
+    <comment>Only on WPF/SL.</comment>
+  </data>
+  <data name="NO_WINDOW_CURRENT" xml:space="preserve">
+    <value>No current Window object found to obtain a CoreDispatcher from.</value>
+    <comment>Only on Jupiter.</comment>
+  </data>
+</root>

external/rx/Rx/NET/Source/System.Reactive.Windows.Threading/System.Reactive.Windows.Threading.csproj

@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{2F7D32BD-5BFC-45D4-9899-F1A76DB32FCB}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>System.Reactive</RootNamespace>
+    <AssemblyName>System.Reactive.Windows.Threading</AssemblyName>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <ProductSignAssembly>true</ProductSignAssembly>
+    <CodeAnalysisRuleSet>..\Rx.ruleset</CodeAnalysisRuleSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'ReleaseXBLV|AnyCPU'">
+    <OutputPath>bin\ReleaseXBLV\</OutputPath>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'DebugXBLV|AnyCPU'">
+    <OutputPath>bin\DebugXBLV\</OutputPath>
+  </PropertyGroup>
+  <Import Project="..\Common.targets" />
+  <PropertyGroup>
+    <DocumentationFile>$(OutputPath)\$(AssemblyName).XML</DocumentationFile>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="mscorlib" Condition=" '$(BuildPlatform)' == 'SILVERLIGHT' " />
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Windows" Condition=" '$(BuildPlatform)' == 'SILVERLIGHT' " />
+    <Reference Include="WindowsBase" Condition=" '$(BuildPlatform)' == 'DESKTOPCLR' " />
+    <Reference Include="System.Observable" Condition=" '$(BuildFlavor)' == 'SILVERLIGHTM7' " />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="GlobalSuppressions.cs" />
+    <Compile Include="Reactive\Concurrency\CoreDispatcherScheduler.cs" />
+    <Compile Include="Reactive\Internal\Constants.cs" />
+    <Compile Include="Reactive\Linq\CoreDispatcherObservable.cs" />
+    <Compile Include="Reactive\Linq\DispatcherObservable.cs" />
+    <Compile Include="Reactive\Concurrency\DispatcherScheduler.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Strings_WindowsThreading.Generated.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\System.Reactive.Core\System.Reactive.Core.csproj">
+      <Project>{4E516F10-DA7A-4D43-963E-A93865ABEA5B}</Project>
+      <Name>System.Reactive.Core</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\System.Reactive.Interfaces\System.Reactive.Interfaces.csproj">
+      <Project>{9E9B9C60-98B0-40FA-9C2B-1218D417CAA4}</Project>
+      <Name>System.Reactive.Interfaces</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup>
+    <EmbeddedResource Include="Strings_WindowsThreading.resx" />
+  </ItemGroup>
+  <Import Project="..\Import.targets" />
+</Project>