Merge branch 'master' into colorspectrum

build/DevAnalyzers.props

@@ -1,6 +1,6 @@
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
-    <ProjectReference Include="$(MSBuildThisFileDirectory)..\src\Tools\DevAnalyzers\DevAnalyzers.csproj"
+    <ProjectReference Include="$(MSBuildThisFileDirectory)..\src\tools\DevAnalyzers\DevAnalyzers.csproj"
                       PrivateAssets="all"
                       ReferenceOutputAssembly="false"
                       OutputItemType="Analyzer"

samples/ControlCatalog.NetCore/ControlCatalog.NetCore.csproj

@@ -6,7 +6,7 @@
     <TargetLatestRuntimePatch>true</TargetLatestRuntimePatch>
   </PropertyGroup>
 
-  <PropertyGroup Condition="'$(RunAotCompilation)' == 'true'">
+  <PropertyGroup Condition="'$(RunNativeAotCompilation)' == 'true'">
     <IlcTrimMetadata>true</IlcTrimMetadata>
     <RestoreAdditionalProjectSources>https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet7/nuget/v3/index.json</RestoreAdditionalProjectSources>
     <NativeAotCompilerVersion>7.0.0-*</NativeAotCompilerVersion>
@@ -22,12 +22,11 @@
     <PackageReference Include="Avalonia.Angle.Windows.Natives" Version="2.1.0.2020091801" />
   </ItemGroup>
 
-  <ItemGroup Condition="'$(RunAotCompilation)' == 'true'">
+  <ItemGroup Condition="'$(RunNativeAotCompilation)' == 'true'">
     <PackageReference Include="Microsoft.DotNet.ILCompiler" Version="$(NativeAotCompilerVersion)" />
     <!-- Cross-compilation for Windows x64-arm64 and Linux x64-arm64 -->
     <PackageReference Condition="'$(RuntimeIdentifier)'=='win-arm64'" Include="runtime.win-x64.Microsoft.DotNet.ILCompiler" Version="$(NativeAotCompilerVersion)" />
     <PackageReference Condition="'$(RuntimeIdentifier)'=='linux-arm64'" Include="runtime.linux-x64.Microsoft.DotNet.ILCompiler" Version="$(NativeAotCompilerVersion)" />
-    <RdXmlFile Include="rd.xml" />
   </ItemGroup>
 
   <PropertyGroup>

samples/ControlCatalog.NetCore/rd.xml

@@ -1,7 +0,0 @@
-<Directives>
-  <Application>
-    <Assembly Name="ControlCatalog" Dynamic="Required All"></Assembly>
-    <Assembly Name="Avalonia.Themes.Default" Dynamic="Required All"></Assembly>
-    <Assembly Name="Avalonia.Themes.Fluent" Dynamic="Required All"></Assembly>
-  </Application>
-</Directives>

src/Avalonia.Base/ApiCompatBaseline.txt

@@ -1,3 +1,4 @@
 Compat issues with assembly Avalonia.Base:
+MembersMustExist : Member 'public System.Int32 System.Int32 Avalonia.Threading.DispatcherPriority.value__' does not exist in the implementation but it does exist in the contract.
 InterfacesShouldHaveSameMembers : Interface member 'public void Avalonia.Threading.IDispatcher.Post<T>(System.Action<T>, T, Avalonia.Threading.DispatcherPriority)' is present in the implementation but not in the contract.
-Total Issues: 1
+Total Issues: 2

src/Avalonia.Base/Threading/AvaloniaScheduler.cs

@@ -46,7 +46,7 @@ namespace Avalonia.Threading
                     {
                         composite.Add(action(this, state));
                     }
-                }, DispatcherPriority.DataBind);
+                }, DispatcherPriority.Background);
 
                 composite.Add(cancellation);
 

src/Avalonia.Base/Threading/Dispatcher.cs

@@ -83,42 +83,42 @@ namespace Avalonia.Threading
             _jobRunner.HasJobsWithPriority(minimumPriority);
 
         /// <inheritdoc/>
-        public Task InvokeAsync(Action action, DispatcherPriority priority = DispatcherPriority.Normal)
+        public Task InvokeAsync(Action action, DispatcherPriority priority = default)
         {
             _ = action ?? throw new ArgumentNullException(nameof(action));
             return _jobRunner.InvokeAsync(action, priority);
         }
 
         /// <inheritdoc/>
-        public Task<TResult> InvokeAsync<TResult>(Func<TResult> function, DispatcherPriority priority = DispatcherPriority.Normal)
+        public Task<TResult> InvokeAsync<TResult>(Func<TResult> function, DispatcherPriority priority = default)
         {
             _ = function ?? throw new ArgumentNullException(nameof(function));
             return _jobRunner.InvokeAsync(function, priority);
         }
 
         /// <inheritdoc/>
-        public Task InvokeAsync(Func<Task> function, DispatcherPriority priority = DispatcherPriority.Normal)
+        public Task InvokeAsync(Func<Task> function, DispatcherPriority priority = default)
         {
             _ = function ?? throw new ArgumentNullException(nameof(function));
             return _jobRunner.InvokeAsync(function, priority).Unwrap();
         }
 
         /// <inheritdoc/>
-        public Task<TResult> InvokeAsync<TResult>(Func<Task<TResult>> function, DispatcherPriority priority = DispatcherPriority.Normal)
+        public Task<TResult> InvokeAsync<TResult>(Func<Task<TResult>> function, DispatcherPriority priority = default)
         {
             _ = function ?? throw new ArgumentNullException(nameof(function));
             return _jobRunner.InvokeAsync(function, priority).Unwrap();
         }
 
         /// <inheritdoc/>
-        public void Post(Action action, DispatcherPriority priority = DispatcherPriority.Normal)
+        public void Post(Action action, DispatcherPriority priority = default)
         {
             _ = action ?? throw new ArgumentNullException(nameof(action));
             _jobRunner.Post(action, priority);
         }
 
         /// <inheritdoc/>
-        public void Post<T>(Action<T> action, T arg, DispatcherPriority priority = DispatcherPriority.Normal)
+        public void Post<T>(Action<T> action, T arg, DispatcherPriority priority = default)
         {
             _ = action ?? throw new ArgumentNullException(nameof(action));
             _jobRunner.Post(action, arg, priority);

src/Avalonia.Base/Threading/DispatcherPriority.cs

@@ -1,74 +1,121 @@
+using System;
+
 namespace Avalonia.Threading
 {
     /// <summary>
     /// Defines the priorities with which jobs can be invoked on a <see cref="Dispatcher"/>.
     /// </summary>
-    // TODO: These are copied from WPF - many won't apply to Avalonia.
+    public readonly struct DispatcherPriority : IEquatable<DispatcherPriority>, IComparable<DispatcherPriority>
-    public enum DispatcherPriority
     {
+        /// <summary>
+        /// The integer value of the priority
+        /// </summary>
+        public int Value { get; }
+
+        private DispatcherPriority(int value)
+        {
+            Value = value;
+        }
+
         /// <summary>
         /// Minimum possible priority
         /// </summary>
-        MinValue = 1,
+        public static readonly DispatcherPriority MinValue = new(0);
-        
+
         /// <summary>
         /// The job will be processed when the system is idle.
         /// </summary>
-        SystemIdle = 1,
+        [Obsolete("WPF compatibility")] public static readonly DispatcherPriority SystemIdle = MinValue;
 
         /// <summary>
         /// The job will be processed when the application is idle.
         /// </summary>
-        ApplicationIdle = 2,
+        [Obsolete("WPF compatibility")] public static readonly DispatcherPriority ApplicationIdle = MinValue;
 
         /// <summary>
         /// The job will be processed after background operations have completed.
         /// </summary>
-        ContextIdle = 3,
+        [Obsolete("WPF compatibility")] public static readonly DispatcherPriority ContextIdle = MinValue;
 
         /// <summary>
-        /// The job will be processed after other non-idle operations have completed.
+        /// The job will be processed with normal priority.
         /// </summary>
-        Background = 4,
+        public static readonly DispatcherPriority Normal = MinValue;
 
         /// <summary>
-        /// The job will be processed with the same priority as input.
+        /// The job will be processed after other non-idle operations have completed.
         /// </summary>
-        Input = 5,
+        public static readonly DispatcherPriority Background = new(1);
 
         /// <summary>
-        /// The job will be processed after layout and render but before input.
+        /// The job will be processed with the same priority as input.
         /// </summary>
-        Loaded = 6,
+        public static readonly DispatcherPriority Input = new(2);
 
         /// <summary>
-        /// The job will be processed with the same priority as render.
+        /// The job will be processed after layout and render but before input.
         /// </summary>
-        Render = 7,
+        public static readonly DispatcherPriority Loaded = new(3);
         
         /// <summary>
         /// The job will be processed with the same priority as render.
         /// </summary>
-        Layout = 8,
+        public static readonly DispatcherPriority Render = new(5);
-        
+
         /// <summary>
-        /// The job will be processed with the same priority as data binding.
+        /// The job will be processed with the same priority as render.
         /// </summary>
-        DataBind = 9,
+        public static readonly DispatcherPriority Layout = new(6);
 
         /// <summary>
-        /// The job will be processed with normal priority.
+        /// The job will be processed with the same priority as data binding.
         /// </summary>
-        Normal = 10,
+        [Obsolete("WPF compatibility")] public static readonly DispatcherPriority DataBind = MinValue;
 
         /// <summary>
         /// The job will be processed before other asynchronous operations.
         /// </summary>
-        Send = 11,
+        public static readonly DispatcherPriority Send = new(7);
-        
+
         /// <summary>
         /// Maximum possible priority
         /// </summary>
-        MaxValue = 11
+        public static readonly DispatcherPriority MaxValue = Send;
+
+        // Note: unlike ctor this one is validating
+        public static DispatcherPriority FromValue(int value)
+        {
+            if (value < MinValue.Value || value > MaxValue.Value)
+                throw new ArgumentOutOfRangeException(nameof(value));
+            return new DispatcherPriority(value);
+        }
+
+        public static implicit operator int(DispatcherPriority priority) => priority.Value;
+
+        public static implicit operator DispatcherPriority(int value) => FromValue(value);
+
+        /// <inheritdoc />
+        public bool Equals(DispatcherPriority other) => Value == other.Value;
+
+        /// <inheritdoc />
+        public override bool Equals(object? obj) => obj is DispatcherPriority other && Equals(other);
+
+        /// <inheritdoc />
+        public override int GetHashCode() => Value.GetHashCode();
+
+        public static bool operator ==(DispatcherPriority left, DispatcherPriority right) => left.Value == right.Value;
+
+        public static bool operator !=(DispatcherPriority left, DispatcherPriority right) => left.Value != right.Value;
+
+        public static bool operator <(DispatcherPriority left, DispatcherPriority right) => left.Value < right.Value;
+
+        public static bool operator >(DispatcherPriority left, DispatcherPriority right) => left.Value > right.Value;
+
+        public static bool operator <=(DispatcherPriority left, DispatcherPriority right) => left.Value <= right.Value;
+
+        public static bool operator >=(DispatcherPriority left, DispatcherPriority right) => left.Value >= right.Value;
+
+        /// <inheritdoc />
+        public int CompareTo(DispatcherPriority other) => Value.CompareTo(other.Value);
     }
-}
+}

src/Avalonia.Base/Threading/DispatcherTimer.cs

@@ -123,7 +123,7 @@ namespace Avalonia.Threading
         /// <param name="interval">The interval at which to tick.</param>
         /// <param name="priority">The priority to use.</param>
         /// <returns>An <see cref="IDisposable"/> used to cancel the timer.</returns>
-        public static IDisposable Run(Func<bool> action, TimeSpan interval, DispatcherPriority priority = DispatcherPriority.Normal)
+        public static IDisposable Run(Func<bool> action, TimeSpan interval, DispatcherPriority priority = default)
         {
             var timer = new DispatcherTimer(priority) { Interval = interval };
 
@@ -152,7 +152,7 @@ namespace Avalonia.Threading
         public static IDisposable RunOnce(
             Action action,
             TimeSpan interval,
-            DispatcherPriority priority = DispatcherPriority.Normal)
+            DispatcherPriority priority = default)
         {
             interval = (interval != TimeSpan.Zero) ? interval : TimeSpan.FromTicks(1);
             

src/Avalonia.Base/Threading/IDispatcher.cs

@@ -24,7 +24,7 @@ namespace Avalonia.Threading
         /// </summary>
         /// <param name="action">The method.</param>
         /// <param name="priority">The priority with which to invoke the method.</param>
-        void Post(Action action, DispatcherPriority priority = DispatcherPriority.Normal);
+        void Post(Action action, DispatcherPriority priority = default);
 
         /// <summary>
         /// Posts an action that will be invoked on the dispatcher thread.
@@ -33,7 +33,7 @@ namespace Avalonia.Threading
         /// <param name="action">The method to call.</param>
         /// <param name="arg">The argument of method to call.</param>
         /// <param name="priority">The priority with which to invoke the method.</param>
-        void Post<T>(Action<T> action, T arg, DispatcherPriority priority = DispatcherPriority.Normal);
+        void Post<T>(Action<T> action, T arg, DispatcherPriority priority = default);
 
         /// <summary>
         /// Invokes a action on the dispatcher thread.
@@ -41,7 +41,7 @@ namespace Avalonia.Threading
         /// <param name="action">The method.</param>
         /// <param name="priority">The priority with which to invoke the method.</param>
         /// <returns>A task that can be used to track the method's execution.</returns>
-        Task InvokeAsync(Action action, DispatcherPriority priority = DispatcherPriority.Normal);
+        Task InvokeAsync(Action action, DispatcherPriority priority = default);
 
         /// <summary>
         /// Invokes a method on the dispatcher thread.
@@ -49,7 +49,7 @@ namespace Avalonia.Threading
         /// <param name="function">The method.</param>
         /// <param name="priority">The priority with which to invoke the method.</param>
         /// <returns>A task that can be used to track the method's execution.</returns>
-        Task<TResult> InvokeAsync<TResult>(Func<TResult> function, DispatcherPriority priority = DispatcherPriority.Normal);
+        Task<TResult> InvokeAsync<TResult>(Func<TResult> function, DispatcherPriority priority = default);
 
         /// <summary>
         /// Queues the specified work to run on the dispatcher thread and returns a proxy for the
@@ -58,7 +58,7 @@ namespace Avalonia.Threading
         /// <param name="function">The work to execute asynchronously.</param>
         /// <param name="priority">The priority with which to invoke the method.</param>
         /// <returns>A task that represents a proxy for the task returned by <paramref name="function"/>.</returns>
-        Task InvokeAsync(Func<Task> function, DispatcherPriority priority = DispatcherPriority.Normal);
+        Task InvokeAsync(Func<Task> function, DispatcherPriority priority = default);
 
         /// <summary>
         /// Queues the specified work to run on the dispatcher thread and returns a proxy for the
@@ -67,6 +67,6 @@ namespace Avalonia.Threading
         /// <param name="function">The work to execute asynchronously.</param>
         /// <param name="priority">The priority with which to invoke the method.</param>
         /// <returns>A task that represents a proxy for the task returned by <paramref name="function"/>.</returns>
-        Task<TResult> InvokeAsync<TResult>(Func<Task<TResult>> function, DispatcherPriority priority = DispatcherPriority.Normal);
+        Task<TResult> InvokeAsync<TResult>(Func<Task<TResult>> function, DispatcherPriority priority = default);
     }
 }

src/Avalonia.Controls/Generators/TreeContainerIndex.cs

@@ -15,6 +15,7 @@ namespace Avalonia.Controls.Generators
     /// </remarks>
     public class TreeContainerIndex
     {
+        private readonly Dictionary<object, HashSet<IControl>> _itemToContainerSet = new Dictionary<object, HashSet<IControl>>();
         private readonly Dictionary<object, IControl> _itemToContainer = new Dictionary<object, IControl>();
         private readonly Dictionary<IControl, object> _containerToItem = new Dictionary<IControl, object>();
 
@@ -45,14 +46,45 @@ namespace Avalonia.Controls.Generators
         /// <param name="container">The item container.</param>
         public void Add(object item, IControl container)
         {
-            _itemToContainer.Add(item, container);
+            _itemToContainer[item] = container;
+            if (_itemToContainerSet.TryGetValue(item, out var set))
+            {
+                set.Add(container);
+            }
+            else
+            {
+                _itemToContainerSet.Add(item, new HashSet<IControl> { container });
+            }
+
             _containerToItem.Add(container, item);
 
             Materialized?.Invoke(
-                this, 
+                this,
                 new ItemContainerEventArgs(new ItemContainerInfo(container, item, 0)));
         }
 
+        /// <summary>
+        /// Removes a container from private collections.
+        /// </summary>
+        /// <param name="container">The item container.</param>
+        /// <param name="item">The DataContext object</param>
+        private void RemoveContainer(IControl container, object item)
+        {
+            if (_itemToContainerSet.TryGetValue(item, out var set))
+            {
+                set.Remove(container);
+                if (set.Count == 0)
+                {
+                    _itemToContainerSet.Remove(item);
+                    _itemToContainer.Remove(item);
+                }
+                else
+                {
+                    _itemToContainer[item] = set.First();
+                }
+            }
+        }
+        
         /// <summary>
         /// Removes a container from the index.
         /// </summary>
@@ -61,10 +93,10 @@ namespace Avalonia.Controls.Generators
         {
             var item = _containerToItem[container];
             _containerToItem.Remove(container);
-            _itemToContainer.Remove(item);
+            RemoveContainer(container, item);
 
             Dematerialized?.Invoke(
-                this, 
+                this,
                 new ItemContainerEventArgs(new ItemContainerInfo(container, item, 0)));
         }
 
@@ -79,7 +111,7 @@ namespace Avalonia.Controls.Generators
             {
                 var item = _containerToItem[container.ContainerControl];
                 _containerToItem.Remove(container.ContainerControl);
-                _itemToContainer.Remove(item);
+                RemoveContainer(container.ContainerControl, item);
             }
 
             Dematerialized?.Invoke(
@@ -97,6 +129,14 @@ namespace Avalonia.Controls.Generators
             if (item != null)
             {
                 _itemToContainer.TryGetValue(item, out var result);
+                if (result == null)
+                {
+                    _itemToContainerSet.TryGetValue(item, out var set);
+                    if (set?.Count > 0)
+                    {
+                        return set.FirstOrDefault();
+                    }
+                }
                 return result;
             }
 
@@ -113,6 +153,10 @@ namespace Avalonia.Controls.Generators
             if (container != null)
             {
                 _containerToItem.TryGetValue(container, out var result);
+                if (result != null)
+                {
+                    _itemToContainer[result] = container;
+                }
                 return result;
             }
 

src/Avalonia.Diagnostics/Diagnostics/ViewModels/MainViewModel.cs

@@ -162,8 +162,7 @@ namespace Avalonia.Diagnostics.ViewModels
                             }
                             catch { }
                         },
-                        TimeSpan.FromMilliseconds(0),
+                        TimeSpan.FromMilliseconds(0));
-                        DispatcherPriority.ApplicationIdle);
                 }
 
                 RaiseAndSetIfChanged(ref _content, value);

tests/Avalonia.UnitTests/ImmediateDispatcher.cs

@@ -16,39 +16,39 @@ namespace Avalonia.UnitTests
         }
 
         /// <inheritdoc/>
-        public void Post(Action action, DispatcherPriority priority = DispatcherPriority.Normal)
+        public void Post(Action action, DispatcherPriority priority)
         {
             action();
         }
 
         /// <inheritdoc/>
-        public void Post<T>(Action<T> action, T arg, DispatcherPriority priority = DispatcherPriority.Normal)
+        public void Post<T>(Action<T> action, T arg, DispatcherPriority priority)
         {
             action(arg);
         }
 
         /// <inheritdoc/>
-        public Task InvokeAsync(Action action, DispatcherPriority priority = DispatcherPriority.Normal)
+        public Task InvokeAsync(Action action, DispatcherPriority priority)
         {
             action();
             return Task.CompletedTask;
         }
 
         /// <inheritdoc/>
-        public Task<TResult> InvokeAsync<TResult>(Func<TResult> function, DispatcherPriority priority = DispatcherPriority.Normal)
+        public Task<TResult> InvokeAsync<TResult>(Func<TResult> function, DispatcherPriority priority)
         {
             var result = function();
             return Task.FromResult(result);
         }
 
         /// <inheritdoc/>
-        public Task InvokeAsync(Func<Task> function, DispatcherPriority priority = DispatcherPriority.Normal)
+        public Task InvokeAsync(Func<Task> function, DispatcherPriority priority)
         {
             return function();
         }
         
         /// <inheritdoc/>
-        public Task<TResult> InvokeAsync<TResult>(Func<Task<TResult>> function, DispatcherPriority priority = DispatcherPriority.Normal)
+        public Task<TResult> InvokeAsync<TResult>(Func<Task<TResult>> function, DispatcherPriority priority)
         {
             return function();
         }