merge development

Signed-off-by: chcurran <82187351+carlitosan@users.noreply.github.com>

Code/Framework/AzCore/AzCore/Component/ComponentApplication.cpp

@@ -728,6 +728,7 @@ namespace AZ
         DestroyReflectionManager();
 
         static_cast<SettingsRegistryImpl*>(m_settingsRegistry.get())->ClearNotifiers();
+        static_cast<SettingsRegistryImpl*>(m_settingsRegistry.get())->ClearMergeEvents();
 
         // Uninit and unload any dynamic modules.
         m_moduleManager->UnloadModules();

Code/Framework/AzCore/AzCore/EBus/Event.h

@@ -58,6 +58,12 @@ namespace AZ
 
         Event& operator=(Event&& rhs);
 
+        //! Take the handlers registered with the other event
+        //! and move them to this event. The other will event
+        //! will be cleared after call
+        //! @param other event to move handlers
+        Event& ClaimHandlers(Event&& other);
+
         //! Returns true if at least one handler is connected to this event.
         bool HasHandlerConnected() const;
 

Code/Framework/AzCore/AzCore/EBus/Event.inl

@@ -207,6 +207,32 @@ namespace AZ
     }
 
 
+    template <typename... Params>
+    auto Event<Params...>::ClaimHandlers(Event&& other) -> Event&
+    {
+        auto handlers = AZStd::move(other.m_handlers);
+        auto addList = AZStd::move(other.m_addList);
+        other.m_freeList = {};
+        other.m_updating = false;
+
+        AZStd::array handlerContainers{ &handlers, &addList };
+        for (AZStd::vector<Handler*>* handlerList : handlerContainers)
+        {
+            for (Handler* handler : *handlerList)
+            {
+                if (handler != nullptr)
+                {
+                    handler->m_index = 0;
+                    handler->m_event = this;
+                    Connect(*handler);
+                }
+            }
+        }
+
+        return *this;
+    }
+
+
     template <typename... Params>
     bool Event<Params...>::HasHandlerConnected() const
     {

Code/Framework/AzCore/AzCore/Settings/SettingsRegistry.h

@@ -123,6 +123,36 @@ namespace AZ
         using NotifyEvent = AZ::Event<AZStd::string_view, Type>;
         using NotifyEventHandler = typename NotifyEvent::Handler;
 
+        using PreMergeEventCallback = AZStd::function<void(AZStd::string_view path, AZStd::string_view rootKey)>;
+        using PostMergeEventCallback = AZStd::function<void(AZStd::string_view path, AZStd::string_view rootKey)>;
+        using PreMergeEvent = AZ::Event<AZStd::string_view, AZStd::string_view>;
+        using PostMergeEvent = AZ::Event<AZStd::string_view, AZStd::string_view>;
+        using PreMergeEventHandler = typename PreMergeEvent::Handler;
+        using PostMergeEventHandler = typename PostMergeEvent::Handler;
+
+        struct ScopedMergeEvent
+        {
+            ScopedMergeEvent(
+                PreMergeEvent& preMergeEvent, PostMergeEvent& postMergeEvent, AZStd::string_view filePath, AZStd::string_view rootKey)
+                : m_preMergeEvent{ preMergeEvent }
+                , m_postMergeEvent{ postMergeEvent }
+                , m_filePath{ filePath }
+                , m_rootKey{ rootKey }
+            {
+                preMergeEvent.Signal(m_filePath, m_rootKey);
+            }
+
+            ~ScopedMergeEvent()
+            {
+                m_postMergeEvent.Signal(m_filePath, m_rootKey);
+            }
+
+            PreMergeEvent& m_preMergeEvent;
+            PostMergeEvent& m_postMergeEvent;
+            AZStd::string_view m_filePath;
+            AZStd::string_view m_rootKey;
+        };
+
         using VisitorCallback =
             AZStd::function<VisitResponse(AZStd::string_view path, AZStd::string_view valueName, VisitAction action, Type type)>;
         //! Base class for the visitor class during traversal over the Settings Registry. The type-agnostic function is always
@@ -169,6 +199,20 @@ namespace AZ
         //! @callback The function to call when an entry gets a new/updated value.
         [[nodiscard]] virtual NotifyEventHandler RegisterNotifier(NotifyCallback&& callback) = 0;
 
+        //! Register a function that will be called before a file is merged.
+        //! @callback The function to call before a file is merged.
+        [[nodiscard]] virtual PreMergeEventHandler RegisterPreMergeEvent(const PreMergeEventCallback& callback) = 0;
+        //! Register a function that will be called before a file is merged.
+        //! @callback The function to call before a file is merged.
+        [[nodiscard]] virtual PreMergeEventHandler RegisterPreMergeEvent (PreMergeEventCallback&& callback) = 0;
+
+        //! Register a function that will be called after a file is merged.
+        //! @callback The function to call after a file is merged.
+        [[nodiscard]] virtual PostMergeEventHandler RegisterPostMergeEvent(const PostMergeEventCallback& callback) = 0;
+        //! Register a function that will be called after a file is merged.
+        //! @callback The function to call after a file is merged.
+        [[nodiscard]] virtual PostMergeEventHandler RegisterPostMergeEvent (PostMergeEventCallback&& callback) = 0;
+
         //! Gets the boolean value at the provided path.
         //! @param result The target to write the result to.
         //! @param path The path to the value.

Code/Framework/AzCore/AzCore/Settings/SettingsRegistryImpl.cpp

@@ -20,7 +20,7 @@
 namespace AZ
 {
     template<typename T>
-    bool SettingsRegistryImpl::SetValueInternal(AZStd::string_view path, T value, SettingsRegistryInterface::Type type)
+    bool SettingsRegistryImpl::SetValueInternal(AZStd::string_view path, T value)
     {
         if (path.empty())
         {
@@ -56,7 +56,6 @@ namespace AZ
                 static_assert(!AZStd::is_same_v<T, T>, "SettingsRegistryImpl::SetValueInternal called with unsupported type.");
             }
 
-            m_notifiers.Signal(path, type);
             return true;
         }
         return false;
@@ -157,11 +156,11 @@ namespace AZ
             // Setting to empty string to prevent assert
             path = "";
         }
-        AZStd::scoped_lock lock(m_settingMutex);
 
         rapidjson::Pointer pointer(path.data(), path.length());
         if (pointer.IsValid())
         {
+            AZStd::scoped_lock lock(m_settingMutex);
             const rapidjson::Value* value = pointer.Get(m_settings);
             if (value)
             {
@@ -207,7 +206,7 @@ namespace AZ
     {
         NotifyEventHandler notifyHandler{ callback };
         {
-            AZStd::scoped_lock lock(m_settingMutex);
+            AZStd::scoped_lock lock(m_notifierMutex);
             notifyHandler.Connect(m_notifiers);
         }
         return notifyHandler;
@@ -217,7 +216,7 @@ namespace AZ
     {
         NotifyEventHandler notifyHandler{ AZStd::move(callback) };
         {
-            AZStd::scoped_lock lock(m_settingMutex);
+            AZStd::scoped_lock lock(m_notifierMutex);
             notifyHandler.Connect(m_notifiers);
         }
         return notifyHandler;
@@ -225,10 +224,82 @@ namespace AZ
 
     void SettingsRegistryImpl::ClearNotifiers()
     {
-        AZStd::scoped_lock lock(m_settingMutex);
+        AZStd::scoped_lock lock(m_notifierMutex);
         m_notifiers.DisconnectAllHandlers();
     }
 
+    auto SettingsRegistryImpl::RegisterPreMergeEvent(const PreMergeEventCallback& callback) -> PreMergeEventHandler
+    {
+        PreMergeEventHandler preMergeHandler{ callback };
+        {
+            AZStd::scoped_lock lock(m_settingMutex);
+            preMergeHandler.Connect(m_preMergeEvent);
+        }
+        return preMergeHandler;
+    }
+
+    auto SettingsRegistryImpl::RegisterPreMergeEvent(PreMergeEventCallback&& callback) -> PreMergeEventHandler
+    {
+        PreMergeEventHandler preMergeHandler{ AZStd::move(callback) };
+        {
+            AZStd::scoped_lock lock(m_settingMutex);
+            preMergeHandler.Connect(m_preMergeEvent);
+        }
+        return preMergeHandler;
+    }
+
+    auto SettingsRegistryImpl::RegisterPostMergeEvent(const PostMergeEventCallback& callback) -> PostMergeEventHandler
+    {
+        PostMergeEventHandler postMergeHandler{ callback };
+        {
+            AZStd::scoped_lock lock(m_settingMutex);
+            postMergeHandler.Connect(m_postMergeEvent);
+        }
+        return postMergeHandler;
+    }
+
+    auto SettingsRegistryImpl::RegisterPostMergeEvent(PostMergeEventCallback&& callback) -> PostMergeEventHandler
+    {
+        PostMergeEventHandler postMergeHandler{ AZStd::move(callback) };
+        {
+            AZStd::scoped_lock lock(m_settingMutex);
+            postMergeHandler.Connect(m_postMergeEvent);
+        }
+        return postMergeHandler;
+    }
+
+    void SettingsRegistryImpl::ClearMergeEvents()
+    {
+        AZStd::scoped_lock lock(m_settingMutex);
+        m_preMergeEvent.DisconnectAllHandlers();
+        m_postMergeEvent.DisconnectAllHandlers();
+    }
+
+    void SettingsRegistryImpl::SignalNotifier(AZStd::string_view jsonPath, Type type)
+    {
+        // Move the Notifier AZ::Event to a local AZ::Event in order to allow
+        // the notifier handlers to be signaled outside of the notifier mutex
+        // This allows other threads to register notifiers while this thread
+        // is invoking the handlers
+        decltype(m_notifiers) localNotifierEvent;
+        {
+            AZStd::scoped_lock lock(m_notifierMutex);
+            localNotifierEvent = AZStd::move(m_notifiers);
+        }
+
+        localNotifierEvent.Signal(jsonPath, type);
+
+        {
+            // Swap the local handlers with the current m_notifiers which
+            // will contain any handlers added during the signaling of the
+            // local event
+            AZStd::scoped_lock lock(m_notifierMutex);
+            AZStd::swap(m_notifiers, localNotifierEvent);
+            // Append any added handlers to the m_notifier structure
+            m_notifiers.ClaimHandlers(AZStd::move(localNotifierEvent));
+        }
+    }
+
     SettingsRegistryInterface::Type SettingsRegistryImpl::GetType(AZStd::string_view path) const
     {
         if (path.empty())
@@ -239,11 +310,11 @@ namespace AZ
             path = "";
         }
 
-        AZStd::scoped_lock lock(m_settingMutex);
 
         rapidjson::Pointer pointer(path.data(), path.length());
         if (pointer.IsValid())
         {
+            AZStd::scoped_lock lock(m_settingMutex);
             const rapidjson::Value* value = pointer.Get(m_settings);
             if (value)
             {
@@ -316,11 +387,11 @@ namespace AZ
             // Setting to empty string to prevent assert
             path = "";
         }
-        AZStd::scoped_lock lock(m_settingMutex);
 
         rapidjson::Pointer pointer(path.data(), path.length());
         if (pointer.IsValid())
         {
+            AZStd::scoped_lock lock(m_settingMutex);
             const rapidjson::Value* value = pointer.Get(m_settings);
             if (value)
             {
@@ -333,32 +404,52 @@ namespace AZ
 
     bool SettingsRegistryImpl::Set(AZStd::string_view path, bool value)
     {
-        AZStd::scoped_lock lock(m_settingMutex);
-        return SetValueInternal(path, value, Type::Boolean);
+        if (AZStd::scoped_lock lock(m_settingMutex); !SetValueInternal(path, value))
+        {
+            return false;
+        }
+        SignalNotifier(path, Type::Boolean);
+        return true;
     }
 
     bool SettingsRegistryImpl::Set(AZStd::string_view path, s64 value)
     {
-        AZStd::scoped_lock lock(m_settingMutex);
-        return SetValueInternal(path, value, Type::Integer);
+        if (AZStd::scoped_lock lock(m_settingMutex); !SetValueInternal(path, value))
+        {
+            return false;
+        }
+        SignalNotifier(path, Type::Integer);
+        return true;
     }
 
     bool SettingsRegistryImpl::Set(AZStd::string_view path, u64 value)
     {
-        AZStd::scoped_lock lock(m_settingMutex);
-        return SetValueInternal(path, value, Type::Integer);
+        if (AZStd::scoped_lock lock(m_settingMutex); !SetValueInternal(path, value))
+        {
+            return false;
+        }
+        SignalNotifier(path, Type::Integer);
+        return true;
     }
 
     bool SettingsRegistryImpl::Set(AZStd::string_view path, double value)
     {
-        AZStd::scoped_lock lock(m_settingMutex);
-        return SetValueInternal(path, value, Type::FloatingPoint);
+        if (AZStd::scoped_lock lock(m_settingMutex); !SetValueInternal(path, value))
+        {
+            return false;
+        }
+        SignalNotifier(path, Type::FloatingPoint);
+        return true;
     }
 
     bool SettingsRegistryImpl::Set(AZStd::string_view path, AZStd::string_view value)
     {
-        AZStd::scoped_lock lock(m_settingMutex);
-        return SetValueInternal(path, value, Type::String);
+        if (AZStd::scoped_lock lock(m_settingMutex); !SetValueInternal(path, value))
+        {
+            return false;
+        }
+        SignalNotifier(path, Type::String);
+        return true;
     }
 
     bool SettingsRegistryImpl::Set(AZStd::string_view path, const char* value)
@@ -376,7 +467,6 @@ namespace AZ
             path = "";
         }
 
-        AZStd::scoped_lock lock(m_settingMutex);
 
         rapidjson::Pointer pointer(path.data(), path.length());
         if (pointer.IsValid())
@@ -386,9 +476,10 @@ namespace AZ
                 value, nullptr, valueTypeID, m_serializationSettings);
             if (jsonResult.GetProcessing() != JsonSerializationResult::Processing::Halted)
             {
+                AZStd::scoped_lock lock(m_settingMutex);
                 rapidjson::Value& setting = pointer.Create(m_settings, m_settings.GetAllocator());
                 setting = AZStd::move(store);
-                m_notifiers.Signal(path, Type::Object);
+                SignalNotifier(path, Type::Object);
                 return true;
             }
         }
@@ -404,13 +495,13 @@ namespace AZ
             // Setting to empty string to prevent assert
             path = "";
         }
-        AZStd::scoped_lock lock(m_settingMutex);
         rapidjson::Pointer pointerPath(path.data(), path.size());
         if (!pointerPath.IsValid())
         {
             return false;
         }
 
+        AZStd::scoped_lock lock(m_settingMutex);
         return pointerPath.Erase(m_settings);
     }
 
@@ -540,7 +631,7 @@ namespace AZ
             return false;
         }
 
-        m_notifiers.Signal("", Type::Object);
+        SignalNotifier("", Type::Object);
 
         return true;
     }
@@ -562,8 +653,6 @@ namespace AZ
             scratchBuffer = &buffer;
         }
 
-        AZStd::scoped_lock lock(m_settingMutex);
-
         bool result = false;
         if (path[path.length()] == 0)
         {
@@ -577,6 +666,8 @@ namespace AZ
                     R"(Path "%.*s" is too long. Either make sure that the provided path is terminated or use a shorter path.)",
                     static_cast<int>(path.length()), path.data());
                 Pointer pointer(AZ_SETTINGS_REGISTRY_HISTORY_KEY "/-");
+
+                AZStd::scoped_lock lock(m_settingMutex);
                 Value pathValue(path.data(), aznumeric_caster(path.length()), m_settings.GetAllocator());
                 pointer.Create(m_settings, m_settings.GetAllocator()).SetObject()
                     .AddMember(StringRef("Error"), StringRef("Unable to read registry file."), m_settings.GetAllocator())
@@ -622,6 +713,7 @@ namespace AZ
         {
             AZ_Error("Settings Registry", false, "Folder path for the Setting Registry is too long: %.*s",
                 static_cast<int>(path.size()), path.data());
+            AZStd::scoped_lock lock(m_settingMutex);
             pointer.Create(m_settings, m_settings.GetAllocator()).SetObject()
                 .AddMember(StringRef("Error"), StringRef("Folder path for the Setting Registry is too long."), m_settings.GetAllocator())
                 .AddMember(StringRef("Path"), Value(path.data(), aznumeric_caster(path.length()), m_settings.GetAllocator()), m_settings.GetAllocator());
@@ -659,6 +751,7 @@ namespace AZ
                 if (fileList.size() >= MaxRegistryFolderEntries)
                 {
                     AZ_Error("Settings Registry", false, "Too many files in registry folder.");
+                    AZStd::scoped_lock lock(m_settingMutex);
                     pointer.Create(m_settings, m_settings.GetAllocator()).SetObject()
                         .AddMember(StringRef("Error"), StringRef("Too many files in registry folder."), m_settings.GetAllocator())
                         .AddMember(StringRef("Path"), Value(folderPath.c_str(), aznumeric_caster(folderPath.size()), m_settings.GetAllocator()), m_settings.GetAllocator())
@@ -678,7 +771,6 @@ namespace AZ
         SystemFile::FindFiles(folderPath.c_str(), callback);
 
 
-        AZStd::scoped_lock lock(m_settingMutex);
         if (!platform.empty())
         {
             // Move the folderPath prefix back to the supplied path before the wildcard
@@ -696,6 +788,7 @@ namespace AZ
                     if (fileList.size() >= MaxRegistryFolderEntries)
                     {
                         AZ_Error("Settings Registry", false, "Too many files in registry folder.");
+                        AZStd::scoped_lock lock(m_settingMutex);
                         pointer.Create(m_settings, m_settings.GetAllocator()).SetObject()
                             .AddMember(StringRef("Error"), StringRef("Too many files in registry folder."), m_settings.GetAllocator())
                             .AddMember(StringRef("Path"), Value(folderPath.c_str(), aznumeric_caster(folderPath.size()), m_settings.GetAllocator()), m_settings.GetAllocator())
@@ -923,6 +1016,8 @@ namespace AZ
         collisionFound = true;
         AZ_Error("Settings Registry", false, R"(Two registry files in "%.*s" point to the same specialization: "%s" and "%s")",
             AZ_STRING_ARG(folderPath), lhs.m_relativePath.c_str(), rhs.m_relativePath.c_str());
+
+        AZStd::scoped_lock lock(m_settingMutex);
         historyPointer.Create(m_settings, m_settings.GetAllocator()).SetObject()
             .AddMember(StringRef("Error"), StringRef("Too many files in registry folder."), m_settings.GetAllocator())
             .AddMember(StringRef("Path"),
@@ -1077,6 +1172,7 @@ namespace AZ
                 }
             }
             
+            AZStd::scoped_lock lock(m_settingMutex);
             pointer.Create(m_settings, m_settings.GetAllocator()).SetObject()
                 .AddMember(StringRef("Error"), StringRef("Unable to parse registry file due to invalid json."), m_settings.GetAllocator())
                 .AddMember(StringRef("Path"), Value(path, m_settings.GetAllocator()), m_settings.GetAllocator())
@@ -1102,6 +1198,7 @@ namespace AZ
                     R"(To merge the supplied settings registry file, the settings within it must be placed within a JSON Object '{}')"
                     R"( in order to allow moving of its fields using the root-key as an anchor.)", path);
 
+                AZStd::scoped_lock lock(m_settingMutex);
                 pointer.Create(m_settings, m_settings.GetAllocator()).SetObject()
                     .AddMember(StringRef("Error"), StringRef("Cannot merge registry file with a root which is not a JSON Object,"
                         " an empty root key and a merge approach of JsonMergePatch. Otherwise the Settings Registry would be overridden."
@@ -1115,9 +1212,12 @@ namespace AZ
             return false;
         }
 
+        ScopedMergeEvent scopedMergeEvent(m_preMergeEvent, m_postMergeEvent, path, rootKey);
+
         JsonSerializationResult::ResultCode mergeResult(JsonSerializationResult::Tasks::Merge);
         if (rootKey.empty())
         {
+            AZStd::scoped_lock lock(m_settingMutex);
             mergeResult = JsonSerialization::ApplyPatch(m_settings, m_settings.GetAllocator(), jsonPatch, mergeApproach, m_applyPatchSettings);
         }
         else
@@ -1125,6 +1225,7 @@ namespace AZ
             Pointer root(rootKey.data(), rootKey.length());
             if (root.IsValid())
             {
+                AZStd::scoped_lock lock(m_settingMutex);
                 Value& rootValue = root.Create(m_settings, m_settings.GetAllocator());
                 mergeResult = JsonSerialization::ApplyPatch(rootValue, m_settings.GetAllocator(), jsonPatch, mergeApproach, m_applyPatchSettings);
             }
@@ -1132,6 +1233,7 @@ namespace AZ
             {
                 AZ_Error("Settings Registry", false, R"(Failed to root path "%.*s" is invalid.)",
                     aznumeric_cast<int>(rootKey.length()), rootKey.data());
+                AZStd::scoped_lock lock(m_settingMutex);
                 pointer.Create(m_settings, m_settings.GetAllocator()).SetObject()
                     .AddMember(StringRef("Error"), StringRef("Invalid root key."), m_settings.GetAllocator())
                     .AddMember(StringRef("Path"), Value(path, m_settings.GetAllocator()), m_settings.GetAllocator());
@@ -1141,15 +1243,19 @@ namespace AZ
         if (mergeResult.GetProcessing() != JsonSerializationResult::Processing::Completed)
         {
             AZ_Error("Settings Registry", false, R"(Failed to fully merge registry file "%s".)", path);
+            AZStd::scoped_lock lock(m_settingMutex);
             pointer.Create(m_settings, m_settings.GetAllocator()).SetObject()
                 .AddMember(StringRef("Error"), StringRef("Failed to fully merge registry file."), m_settings.GetAllocator())
                 .AddMember(StringRef("Path"), Value(path, m_settings.GetAllocator()), m_settings.GetAllocator());
             return false;
         }
 
-        pointer.Create(m_settings, m_settings.GetAllocator()).SetString(path, m_settings.GetAllocator());
+        {
+            AZStd::scoped_lock lock(m_settingMutex);
+            pointer.Create(m_settings, m_settings.GetAllocator()).SetString(path, m_settings.GetAllocator());
+        }
 
-        m_notifiers.Signal("", Type::Object);
+        SignalNotifier("", Type::Object);
 
         return true;
     }

Code/Framework/AzCore/AzCore/Settings/SettingsRegistryImpl.h

@@ -48,6 +48,12 @@ namespace AZ
         [[nodiscard]] NotifyEventHandler RegisterNotifier(NotifyCallback&& callback) override;
         void ClearNotifiers();
 
+        [[nodiscard]] PreMergeEventHandler RegisterPreMergeEvent(const PreMergeEventCallback& callback) override;
+        [[nodiscard]] PreMergeEventHandler RegisterPreMergeEvent(PreMergeEventCallback&& callback) override;
+        [[nodiscard]] PostMergeEventHandler RegisterPostMergeEvent(const PostMergeEventCallback& callback) override;
+        [[nodiscard]] PostMergeEventHandler RegisterPostMergeEvent(PostMergeEventCallback&& callback) override;
+        void ClearMergeEvents();
+
         bool Get(bool& result, AZStd::string_view path) const override;
         bool Get(s64& result, AZStd::string_view path) const override;
         bool Get(u64& result, AZStd::string_view path) const override;
@@ -89,7 +95,7 @@ namespace AZ
         using RegistryFileList = AZStd::fixed_vector<RegistryFile, MaxRegistryFolderEntries>;
 
         template<typename T>
-        bool SetValueInternal(AZStd::string_view path, T value, SettingsRegistryInterface::Type type);
+        bool SetValueInternal(AZStd::string_view path, T value);
         template<typename T>
         bool GetValueInternal(T& result, AZStd::string_view path) const;
         VisitResponse Visit(Visitor& visitor, StackedString& path, AZStd::string_view valueName,
@@ -100,9 +106,15 @@ namespace AZ
             const rapidjson::Pointer& historyPointer, AZStd::string_view folderPath);
         bool ExtractFileDescription(RegistryFile& output, const char* filename, const Specializations& specializations);
         bool MergeSettingsFileInternal(const char* path, Format format, AZStd::string_view rootKey, AZStd::vector<char>& scratchBuffer);
+
+        void SignalNotifier(AZStd::string_view jsonPath, Type type);
         
         mutable AZStd::recursive_mutex m_settingMutex;
+        mutable AZStd::recursive_mutex m_notifierMutex;
         NotifyEvent m_notifiers;
+        PreMergeEvent m_preMergeEvent;
+        PostMergeEvent m_postMergeEvent;
+
         rapidjson::Document m_settings;
         JsonSerializerSettings m_serializationSettings;
         JsonDeserializerSettings m_deserializationSettings;

Code/Framework/AzCore/AzCore/UnitTest/Mocks/MockSettingsRegistry.h

@@ -25,6 +25,10 @@ namespace AZ
         MOCK_CONST_METHOD2(Visit, bool(const VisitorCallback&, AZStd::string_view));
         MOCK_METHOD1(RegisterNotifier, NotifyEventHandler(const NotifyCallback&));
         MOCK_METHOD1(RegisterNotifier, NotifyEventHandler(NotifyCallback&&));
+        MOCK_METHOD1(RegisterPreMergeEvent, PreMergeEventHandler(const PreMergeEventCallback&));
+        MOCK_METHOD1(RegisterPreMergeEvent, PreMergeEventHandler(PreMergeEventCallback&&));
+        MOCK_METHOD1(RegisterPostMergeEvent, PostMergeEventHandler(const PostMergeEventCallback&));
+        MOCK_METHOD1(RegisterPostMergeEvent, PostMergeEventHandler(PostMergeEventCallback&&));
 
         MOCK_CONST_METHOD2(Get, bool(bool&, AZStd::string_view));
         MOCK_CONST_METHOD2(Get, bool(s64&, AZStd::string_view));

Code/Framework/AzCore/Tests/EventTests.cpp

@@ -240,6 +240,37 @@ namespace UnitTest
         static_assert(!AZStd::is_copy_assignable_v<AZ::Event<int32_t>>, "AZ Events should not be copy assignable");
     }
 
+    TEST_F(EventTests, TestClaimHandlers_TakesAllSourceHandlers)
+    {
+        AZ::Event<> testEvent1;
+        AZ::Event<> testEvent2;
+
+        int32_t handlerInvokeCount{};
+        auto handlerCallback = [&handlerInvokeCount]()
+        {
+            ++handlerInvokeCount;
+        };
+        AZ::Event<>::Handler testHandler1(handlerCallback);
+        AZ::Event<>::Handler testHandler2(handlerCallback);
+
+        testHandler1.Connect(testEvent1);
+        testHandler2.Connect(testEvent2);
+
+        EXPECT_TRUE(testEvent1.HasHandlerConnected());
+        EXPECT_TRUE(testEvent2.HasHandlerConnected());
+
+        testEvent1.ClaimHandlers(AZStd::move(testEvent2));
+        EXPECT_TRUE(testEvent1.HasHandlerConnected());
+        EXPECT_FALSE(testEvent2.HasHandlerConnected());
+
+        // testEvent1 should have both handlers
+        testEvent1.Signal();
+        EXPECT_EQ(2, handlerInvokeCount);
+        // testEvent2 should have neither of the handlers
+        testEvent2.Signal();
+        EXPECT_EQ(2, handlerInvokeCount);
+    }
+
     TEST_F(EventTests, HandlerMoveAssignment_ProperlyDisconnectsFromOldEvent)
     {
         AZ::Event<> testEvent1;

Code/Framework/AzFramework/Platform/Mac/AzFramework/Windowing/NativeWindow_Mac.mm

@@ -34,7 +34,7 @@ namespace AzFramework
         bool GetFullScreenState() const override;
         void SetFullScreenState(bool fullScreenState) override;
         bool CanToggleFullScreenState() const override { return true; }
-        uint32_t GetMainDisplayRefreshRate() const override;
+        uint32_t GetDisplayRefreshRate() const override;
 
     private:
         static NSWindowStyleMask ConvertToNSWindowStyleMask(const WindowStyleMasks& styleMasks);
@@ -142,7 +142,7 @@ namespace AzFramework
         return nativeMask ? nativeMask : defaultMask;
     }
 
-    uint32_t NativeWindowImpl_Darwin::GetMainDisplayRefreshRate() const
+    uint32_t NativeWindowImpl_Darwin::GetDisplayRefreshRate() const
     {
         return m_mainDisplayRefreshRate;
     }

Code/Framework/AzFramework/Platform/Windows/AzFramework/Windowing/NativeWindow_Windows.cpp

@@ -207,7 +207,10 @@ namespace AzFramework
     // Handles Win32 Window Event callbacks
     LRESULT CALLBACK NativeWindowImpl_Win32::WindowCallback(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
     {
-        NativeWindowImpl_Win32* nativeWindowImpl = reinterpret_cast<NativeWindowImpl_Win32*>(GetWindowLongPtr(hWnd, GWLP_USERDATA));      
+        NativeWindowImpl_Win32* nativeWindowImpl = reinterpret_cast<NativeWindowImpl_Win32*>(GetWindowLongPtr(hWnd, GWLP_USERDATA));
+
+        // If set to true, call DefWindowProc to ensure the default Windows behavior occurs
+        bool shouldBubbleEventUp = false;
 
         switch (message)
         {
@@ -276,14 +279,19 @@ namespace AzFramework
             uint32_t refreshRate = DisplayConfig.dmDisplayFrequency;
             WindowNotificationBus::Event(
                 nativeWindowImpl->GetWindowHandle(), &WindowNotificationBus::Events::OnRefreshRateChanged, refreshRate);
+            shouldBubbleEventUp = true;
             break;
         }
         default:
-            return DefWindowProc(hWnd, message, wParam, lParam);
+            shouldBubbleEventUp = true;
             break;
         }
 
-        return 0;
+        if (!shouldBubbleEventUp)
+        {
+            return 0;
+        }
+        return DefWindowProc(hWnd, message, wParam, lParam);
     }
 
     void NativeWindowImpl_Win32::WindowSizeChanged(const uint32_t width, const uint32_t height)

Code/Framework/AzFramework/Platform/iOS/AzFramework/Windowing/NativeWindow_ios.mm

@@ -27,7 +27,7 @@ namespace AzFramework
                         const WindowGeometry& geometry,
                         const WindowStyleMasks& styleMasks) override;
         NativeWindowHandle GetWindowHandle() const override;
-        uint32_t GetMainDisplayRefreshRate() const override;
+        uint32_t GetDisplayRefreshRate() const override;
         
     private:
         UIWindow* m_nativeWindow;
@@ -66,7 +66,7 @@ namespace AzFramework
         return m_nativeWindow;
     }
    
-    uint32_t NativeWindowImpl_Ios::GetMainDisplayRefreshRate() const
+    uint32_t NativeWindowImpl_Ios::GetDisplayRefreshRate() const
     {
         return m_mainDisplayRefreshRate;
     }

Code/Framework/AzNetworking/AzNetworking/Serialization/StringifySerializer.cpp

@@ -10,22 +10,9 @@
 
 namespace AzNetworking
 {
-    StringifySerializer::StringifySerializer(char delimeter, bool outputFieldNames, const AZStd::string& seperator)
-        : m_delimeter(delimeter)
-        , m_outputFieldNames(outputFieldNames)
-        , m_separator(seperator)
+    const StringifySerializer::ValueMap& StringifySerializer::GetValueMap() const
     {
-        ;
-    }
-
-    const AZStd::string& StringifySerializer::GetString() const
-    {
-        return m_string;
-    }
-
-    const StringifySerializer::StringMap& StringifySerializer::GetValueMap() const
-    {
-        return m_map;
+        return m_valueMap;
     }
 
     SerializerMode StringifySerializer::GetSerializerMode() const
@@ -137,22 +124,9 @@ namespace AzNetworking
     template <typename T>
     bool StringifySerializer::ProcessData(const char* name, const T& value)
     {
-        // Only add delimeters after we have processed at least one element
-        if (!m_string.empty())
-        {
-            m_string += m_delimeter;
-        }
-
-        if (m_outputFieldNames)
-        {
-            m_string += m_prefix;
-            m_string += name;
-            m_string += m_separator;
-        }
-
-        AZ::CVarFixedString string = AZ::ConsoleTypeHelpers::ValueToString(value);
-        m_string += string.c_str();
-        m_map[m_prefix + name] = string.c_str();
+        const AZStd::string keyString = m_prefix + name;
+        AZ::CVarFixedString valueString = AZ::ConsoleTypeHelpers::ValueToString(value);
+        m_valueMap[keyString] = valueString.c_str();
         return true;
     }
 }

Code/Framework/AzNetworking/AzNetworking/Serialization/StringifySerializer.h

@@ -20,17 +20,12 @@ namespace AzNetworking
     {
     public:
 
-        using StringMap = AZStd::map<AZStd::string, AZStd::string>;
+        using ValueMap = AZStd::map<AZStd::string, AZStd::string>;
 
-        StringifySerializer(char delimeter = ' ', bool outputFieldNames = true, const AZStd::string& seperator = "=");
+        StringifySerializer() = default;
 
-        // GetString
-        // After serializing objects, get the serialized values as a single string
-        const AZStd::string& GetString() const;
-
-        // GetValueMap
-        // After serializing objects, get the serialized values as key value pairs
-        const StringMap& GetValueMap() const;
+        //! After serializing objects, get the serialized values as a map of key/value pairs.
+        const ValueMap& GetValueMap() const;
 
         // ISerializer interfaces
         SerializerMode GetSerializerMode() const override;
@@ -62,15 +57,8 @@ namespace AzNetworking
         template <typename T>
         bool ProcessData(const char* name, const T& value);
 
-    private:
-
-        char m_delimeter;
-        bool m_outputFieldNames = true;
-
-        StringMap m_map;
-        AZStd::string m_string;
+        ValueMap m_valueMap;
         AZStd::string m_prefix;
-        AZStd::string m_separator;
         AZStd::deque<AZStd::size_t> m_prefixSizeStack;
     };
 }

Code/Framework/AzQtComponents/AzQtComponents/Components/FancyDocking.cpp

@@ -1882,7 +1882,10 @@ namespace AzQtComponents
             return;
         }
 
-        QApplication::setOverrideCursor(m_dragCursor);
+        if (!QApplication::overrideCursor())
+        {
+            QApplication::setOverrideCursor(m_dragCursor);
+        }
 
         QPoint relativePressPos = pressPos;
 

Code/Framework/AzToolsFramework/AzToolsFramework/API/ToolsApplicationAPI.h

@@ -841,9 +841,6 @@ namespace AzToolsFramework
          */
         virtual AZStd::string GetComponentIconPath(const AZ::Uuid& /*componentType*/, AZ::Crc32 /*componentIconAttrib*/, AZ::Component* /*component*/) { return AZStd::string(); }
 
-        /// Resource Selector hook, returns a path for a resource.
-        virtual AZStd::string SelectResource(const AZStd::string& /*resourceType*/, const AZStd::string& /*previousValue*/) { return AZStd::string(); }
-
         /**
          * Calculate the navigation 2D radius in units of an agent given its Navigation Type Name
          * @param angentTypeName         the name that identifies the agent navigation type

Code/Framework/AzToolsFramework/AzToolsFramework/Entity/PrefabEditorEntityOwnershipService.cpp

@@ -219,42 +219,10 @@ namespace AzToolsFramework
     bool PrefabEditorEntityOwnershipService::SaveToStream(AZ::IO::GenericStream& stream, AZStd::string_view filename)
     {
         AZ::IO::Path relativePath = m_loaderInterface->GenerateRelativePath(filename);
-        AzToolsFramework::Prefab::TemplateId templateId = m_prefabSystemComponent->GetTemplateIdFromFilePath(relativePath);
 
         m_rootInstance->SetTemplateSourcePath(relativePath);
-
-        if (templateId == AzToolsFramework::Prefab::InvalidTemplateId)
-        {
-            m_rootInstance->m_containerEntity->AddComponent(aznew Prefab::EditorPrefabComponent());
-            HandleEntitiesAdded({ m_rootInstance->m_containerEntity.get() });
-
-            AzToolsFramework::Prefab::PrefabDom dom;
-            bool success = AzToolsFramework::Prefab::PrefabDomUtils::StoreInstanceInPrefabDom(*m_rootInstance, dom);
-            if (!success)
-            {
-                AZ_Error("Prefab", false, "Failed to convert current root instance into a DOM when saving file '%.*s'", AZ_STRING_ARG(filename));
-                return false;
-            }
-            templateId = m_prefabSystemComponent->AddTemplate(relativePath, AZStd::move(dom));
-
-            if (templateId == AzToolsFramework::Prefab::InvalidTemplateId)
-            {
-                AZ_Error("Prefab", false, "Couldn't add new template id '%i' when saving file '%.*s'", templateId, AZ_STRING_ARG(filename));
-                return false;
-            }
-        }
-
-        Prefab::TemplateId prevTemplateId = m_rootInstance->GetTemplateId();
-        m_rootInstance->SetTemplateId(templateId);
-
-        if (prevTemplateId != Prefab::InvalidTemplateId && templateId != prevTemplateId)
-        {
-            // Make sure we only have one level template loaded at a time
-            m_prefabSystemComponent->RemoveTemplate(prevTemplateId);
-        }
-
+        
         AZStd::string out;
-
         if (!m_loaderInterface->SaveTemplateToString(m_rootInstance->GetTemplateId(), out))
         {
             return false;
@@ -266,7 +234,7 @@ namespace AzToolsFramework
         {
             return false;
         }
-        m_prefabSystemComponent->SetTemplateDirtyFlag(templateId, false);
+        m_prefabSystemComponent->SetTemplateDirtyFlag(m_rootInstance->GetTemplateId(), false);
         return true;
     }
 

Code/Framework/AzToolsFramework/AzToolsFramework/Input/QtEventToAzInputManager.cpp

@@ -162,7 +162,6 @@ namespace AzToolsFramework
         : QObject(sourceWidget)
         , m_sourceWidget(sourceWidget)
         , m_keyboardModifiers(AZStd::make_shared<AzFramework::ModifierKeyStates>())
-        , m_cursorPosition(AZStd::make_shared<AzFramework::InputChannel::PositionData2D>())
     {
         InitializeKeyMappings();
         InitializeMouseButtonMappings();
@@ -230,24 +229,17 @@ namespace AzToolsFramework
             return false;
         }
 
-        // Because there's no "end" to mouse movement and wheel events, we reset mouse movement channels that have been opened
-        // during the next processed non-mouse event.
-        if (m_mouseChannelsNeedUpdate && event->type() != QEvent::Type::MouseMove && event->type() != QEvent::Type::Wheel)
-        {
-            m_cursorPosition->m_normalizedPositionDelta = AZ::Vector2::CreateZero();
-            ProcessPendingMouseEvents();
-            m_mouseChannelsNeedUpdate = false;
-        }
+        const auto eventType = event->type();
 
         // Only accept mouse & key release events that originate from an object that is not our target widget,
         // as we don't want to erroneously intercept user input meant for another component.
-        if (object != m_sourceWidget && event->type() != QEvent::Type::KeyRelease && event->type() != QEvent::Type::MouseButtonRelease)
+        if (object != m_sourceWidget && eventType != QEvent::Type::KeyRelease && eventType != QEvent::Type::MouseButtonRelease)
         {
             return false;
         }
 
         // If our focus changes, go ahead and reset all input devices.
-        if (event->type() == QEvent::FocusIn || event->type() == QEvent::FocusOut)
+        if (eventType == QEvent::FocusIn || eventType == QEvent::FocusOut)
         {
             HandleFocusChange(event);
         }
@@ -255,27 +247,28 @@ namespace AzToolsFramework
         // ShortcutOverride is used in lieu of KeyPress for high priority input channels like Alt
         // that need to be accepted and stopped before they bubble up and cause unintended behavior.
         else if (
-            event->type() == QEvent::Type::KeyPress || event->type() == QEvent::Type::KeyRelease ||
-            event->type() == QEvent::Type::ShortcutOverride)
+            eventType == QEvent::Type::KeyPress || eventType == QEvent::Type::KeyRelease || eventType == QEvent::Type::ShortcutOverride)
         {
             QKeyEvent* keyEvent = static_cast<QKeyEvent*>(event);
             HandleKeyEvent(keyEvent);
         }
         // Map mouse events to input channels.
-        else if (event->type() == QEvent::Type::MouseButtonPress || event->type() == QEvent::Type::MouseButtonRelease || event->type() == QEvent::Type::MouseButtonDblClick)
+        else if (
+            eventType == QEvent::Type::MouseButtonPress || eventType == QEvent::Type::MouseButtonRelease ||
+            eventType == QEvent::Type::MouseButtonDblClick)
         {
             QMouseEvent* mouseEvent = static_cast<QMouseEvent*>(event);
             HandleMouseButtonEvent(mouseEvent);
         }
         // Map mouse movement to the movement input channels.
         // This includes SystemCursorPosition alongside Movement::X and Movement::Y.
-        else if (event->type() == QEvent::Type::MouseMove)
+        else if (eventType == QEvent::Type::MouseMove)
         {
             QMouseEvent* mouseEvent = static_cast<QMouseEvent*>(event);
             HandleMouseMoveEvent(mouseEvent);
         }
         // Map wheel events to the mouse Z movement channel.
-        else if (event->type() == QEvent::Type::Wheel)
+        else if (eventType == QEvent::Type::Wheel)
         {
             QWheelEvent* wheelEvent = static_cast<QWheelEvent*>(event);
             HandleWheelEvent(wheelEvent);
@@ -303,14 +296,16 @@ namespace AzToolsFramework
         auto mouseWheelChannel =
             GetInputChannel<AzFramework::InputChannelDeltaWithSharedPosition2D>(AzFramework::InputDeviceMouse::Movement::Z);
 
-        systemCursorChannel->ProcessRawInputEvent(m_cursorPosition->m_normalizedPositionDelta.GetLength());
+        systemCursorChannel->ProcessRawInputEvent(m_mouseDevice->m_cursorPositionData2D->m_normalizedPositionDelta.GetLength());
         // Generate movement events based on the pixel delta divided by the DPI scaling factor, to calculate a rough approximation
         // of cursor movement velocity.
         movementXChannel->ProcessRawInputEvent(
-            m_cursorPosition->m_normalizedPositionDelta.GetX() * aznumeric_cast<float>(m_sourceWidget->width()) / m_sourceWidget->devicePixelRatioF());
+            m_mouseDevice->m_cursorPositionData2D->m_normalizedPositionDelta.GetX() * aznumeric_cast<float>(m_sourceWidget->width()) /
+            m_sourceWidget->devicePixelRatioF());
         movementYChannel->ProcessRawInputEvent(
-            m_cursorPosition->m_normalizedPositionDelta.GetY() * aznumeric_cast<float>(m_sourceWidget->height()) / m_sourceWidget->devicePixelRatioF());
-        mouseWheelChannel->ProcessRawInputEvent(0.f);
+            m_mouseDevice->m_cursorPositionData2D->m_normalizedPositionDelta.GetY() * aznumeric_cast<float>(m_sourceWidget->height()) /
+            m_sourceWidget->devicePixelRatioF());
+        mouseWheelChannel->ProcessRawInputEvent(0.0f);
 
         NotifyUpdateChannelIfNotIdle(systemCursorChannel, nullptr);
         NotifyUpdateChannelIfNotIdle(movementXChannel, nullptr);
@@ -358,14 +353,13 @@ namespace AzToolsFramework
 
     void QtEventToAzInputMapper::HandleMouseMoveEvent(QMouseEvent* mouseEvent)
     {
-        AZ::Vector2 lastCursorPosition = m_cursorPosition->m_normalizedPosition;
+        AZ::Vector2 lastCursorPosition = m_mouseDevice->m_cursorPositionData2D->m_normalizedPosition;
 
         const QPoint mousePos = mouseEvent->pos();
         const AZ::Vector2 normalizedPosition = WidgetPositionToNormalizedPosition(mousePos);
-        m_cursorPosition->m_normalizedPositionDelta = normalizedPosition - m_cursorPosition->m_normalizedPosition;
-        m_cursorPosition->m_normalizedPosition = normalizedPosition;
+        m_mouseDevice->m_cursorPositionData2D->m_normalizedPositionDelta = normalizedPosition - m_mouseDevice->m_cursorPositionData2D->m_normalizedPosition;
+        m_mouseDevice->m_cursorPositionData2D->m_normalizedPosition = normalizedPosition;
         ProcessPendingMouseEvents();
-        m_mouseChannelsNeedUpdate = true;
 
         if (m_capturingCursor)
         {
@@ -376,7 +370,7 @@ namespace AzToolsFramework
             // Even though we just set the cursor position, there are edge cases such as remote desktop that will leave
             // the cursor position unchanged. For safety, we re-cache our last cursor position for delta generation.
             QPoint actualWidgetPosition = m_sourceWidget->mapFromGlobal(QCursor::pos());
-            m_cursorPosition->m_normalizedPosition = WidgetPositionToNormalizedPosition(actualWidgetPosition);
+            m_mouseDevice->m_cursorPositionData2D->m_normalizedPosition = WidgetPositionToNormalizedPosition(actualWidgetPosition);
         }
     }
 
@@ -427,21 +421,18 @@ namespace AzToolsFramework
         }
         cursorZChannel->ProcessRawInputEvent(aznumeric_cast<float>(wheelAngle));
         NotifyUpdateChannelIfNotIdle(cursorZChannel, wheelEvent);
-        m_mouseChannelsNeedUpdate = true;
     }
 
     void QtEventToAzInputMapper::HandleFocusChange(QEvent* event)
     {
         for (auto& channelData : m_channels)
         {
-            // If resetting the input device changed the channel state, submit it to the mapped channel list
-            // for processing.
+            // If resetting the input device changed the channel state, submit it to the mapped channel list for processing.
             if (channelData.second->IsActive())
             {
                 channelData.second->UpdateState(false);
                 NotifyUpdateChannelIfNotIdle(channelData.second, event);
             }
         }
-        m_mouseChannelsNeedUpdate = false;
     }
 } // namespace AzToolsFramework

Code/Framework/AzToolsFramework/AzToolsFramework/Input/QtEventToAzInputManager.h

@@ -138,8 +138,6 @@ namespace AzToolsFramework
 
         // The current keyboard modifier state used by our synthetic key input channels.
         AZStd::shared_ptr<AzFramework::ModifierKeyStates> m_keyboardModifiers;
-        // The current normalized cursor position used by our synthetic system cursor event.
-        AZStd::shared_ptr<AzFramework::InputChannel::PositionData2D> m_cursorPosition;
         // A lookup table for Qt key -> AZ input channel.
         AZStd::unordered_map<Qt::Key, AzFramework::InputChannelId> m_keyMappings;
         // A lookup table for Qt mouse button -> AZ input channel.
@@ -152,8 +150,6 @@ namespace AzToolsFramework
         AZStd::unordered_map<AzFramework::InputChannelId, AzFramework::InputChannel*> m_channels;
         // The source widget to map events from, used to calculate the relative mouse position within the widget bounds.
         QWidget* m_sourceWidget;
-        // Flags when mouse movement channels have been opened and may need to be closed (as there are no movement ended events).
-        bool m_mouseChannelsNeedUpdate = false;
         // Flags whether or not Qt events should currently be processed.
         bool m_enabled = true;
         // Flags whether or not the cursor is being constrained to the source widget (for invisible mouse movement).

Code/Framework/AzToolsFramework/AzToolsFramework/Logger/TraceLogger.cpp

@@ -5,11 +5,9 @@
  *
  */
 
-#include <AzToolsFramework/Logger/TraceLogger.h>
-
 #include <AzCore/Settings/SettingsRegistryMergeUtils.h>
 #include <AzFramework/StringFunc/StringFunc.h>
-
+#include <AzToolsFramework/Logger/TraceLogger.h>
 
 namespace AzToolsFramework
 {
@@ -25,6 +23,22 @@ namespace AzToolsFramework
 
     bool TraceLogger::OnOutput(const char* window, const char* message)
     {
+        for (const auto& filter : m_windowFilters)
+        {
+            if (AZ::StringFunc::Contains(window, filter))
+            {
+                return true;
+            }
+        }
+
+        for (const auto& filter : m_messageFilters)
+        {
+            if (AZ::StringFunc::Contains(message, filter))
+            {
+                return true;
+            }
+        }
+
         if (m_logFile)
         {
             m_logFile->AppendLog(AzFramework::LogFile::SEV_NORMAL, window, message);
@@ -36,10 +50,10 @@ namespace AzToolsFramework
         return false;
     }
 
-    void TraceLogger::WriteStartupLog(const AZStd::string& logFileName)
-    {    
+    void TraceLogger::PrepareLogFile(const AZStd::string& logFileName)
+    {
         using namespace AzFramework;
-        
+
         AZ::IO::FileIOBase* fileIO = AZ::IO::FileIOBase::GetInstance();
         AZ_Assert(fileIO != nullptr, "FileIO should be running at this point");
 
@@ -71,4 +85,34 @@ namespace AzToolsFramework
             m_logFile->FlushLog();
         }
     }
+
+    void TraceLogger::AddWindowFilter(const AZStd::string& filter)
+    {
+        m_windowFilters.insert(filter);
+    }
+
+    void TraceLogger::RemoveWindowFilter(const AZStd::string& filter)
+    {
+        m_windowFilters.erase(filter);
+    }
+
+    void TraceLogger::ClearWindowFilter()
+    {
+        m_windowFilters.clear();
+    }
+
+    void TraceLogger::AddMessageFilter(const AZStd::string& filter)
+    {
+        m_messageFilters.insert(filter);
+    }
+
+    void TraceLogger::RemoveMessageFilter(const AZStd::string& filter)
+    {
+        m_messageFilters.erase(filter);
+    }
+
+    void TraceLogger::ClearMessageFilter()
+    {
+        m_messageFilters.clear();
+    }
 } // namespace AzToolsFramework

Code/Framework/AzToolsFramework/AzToolsFramework/Logger/TraceLogger.h

@@ -22,8 +22,26 @@ namespace AzToolsFramework
         TraceLogger();
         ~TraceLogger();
 
-        //! Intalize logging for O3DEToolsApplications
-        void WriteStartupLog(const AZStd::string& logFileName);
+        //! Open log file and dump log sink into it
+        void PrepareLogFile(const AZStd::string& logFileName);
+
+        //! Add filter to ignore messages for windows with matching names
+        void AddWindowFilter(const AZStd::string& filter);
+
+        //! Remove window filter
+        void RemoveWindowFilter(const AZStd::string& filter);
+
+        //! Clear window filters
+        void ClearWindowFilter();
+
+        //! Add filter to ignore messages with matching names
+        void AddMessageFilter(const AZStd::string& filter);
+
+        //! Remove message filter
+        void RemoveMessageFilter(const AZStd::string& filter);
+
+        //! Clear message filters
+        void ClearMessageFilter();
 
     protected:
         //////////////////////////////////////////////////////////////////////////
@@ -38,6 +56,8 @@ namespace AzToolsFramework
             AZStd::string message;
         };
         AZStd::vector<LogMessage> m_startupLogSink;
+        AZStd::unordered_set<AZStd::string> m_windowFilters;
+        AZStd::unordered_set<AZStd::string> m_messageFilters;
         AZStd::unique_ptr<AzFramework::LogFile> m_logFile;
     };
 } // namespace AzToolsFramework

Code/Framework/AzToolsFramework/AzToolsFramework/Prefab/Instance/InstanceSerializer.cpp

@@ -15,6 +15,7 @@
 #include <AzToolsFramework/Prefab/Instance/InstanceEntityMapperInterface.h>
 #include <AzToolsFramework/Prefab/PrefabLoaderInterface.h>
 #include <AzToolsFramework/Prefab/PrefabSystemComponentInterface.h>
+#include <Prefab/PrefabDomUtils.h>
 
 namespace AzToolsFramework
 {
@@ -81,6 +82,15 @@ namespace AzToolsFramework
                 result.Combine(resultInstances);
             }
 
+            PrefabDomUtils::LinkIdMetadata* subPathLinkId = context.GetMetadata().Find<PrefabDomUtils::LinkIdMetadata>();
+            if (subPathLinkId)
+            {
+                AZ::ScopedContextPath subPathSource(context, "m_linkId");
+
+                result = ContinueStoringToJsonObjectField(
+                    outputValue, "LinkId", &(instance->m_linkId), &InvalidLinkId, azrtti_typeid<decltype(instance->m_linkId)>(), context);
+            }
+
             return context.Report(result,
                 result.GetProcessing() == JSR::Processing::Completed ? "Successfully stored Instance information for Prefab." :
                 "Failed to store Instance information for Prefab.");

Code/Framework/AzToolsFramework/AzToolsFramework/Prefab/PrefabDomUtils.cpp

@@ -88,6 +88,11 @@ namespace AzToolsFramework
                     settings.m_keepDefaults = true;
                 }
 
+                if ((flags & StoreFlags::StoreLinkIds) != StoreFlags::None)
+                {
+                    settings.m_metadata.Create<LinkIdMetadata>();
+                }
+
                 AZStd::string scratchBuffer;
                 auto issueReportingCallback = [&scratchBuffer]
                 (AZStd::string_view message, AZ::JsonSerializationResult::ResultCode result,

Code/Framework/AzToolsFramework/AzToolsFramework/Prefab/PrefabDomUtils.h

@@ -45,7 +45,11 @@ namespace AzToolsFramework
 
                 //! By default an instance will be stored with default values. In cases where we want to store less json without defaults
                 //! such as saving to disk, this flag will control that behavior.
-                StripDefaultValues = 1 << 0
+                StripDefaultValues = 1 << 0,
+
+                //! We do not save linkIds to file. However when loading a level we want to temporarily save
+                //! linkIds to instance dom so any nested prefabs will have linkIds correctly set.
+                StoreLinkIds = 1 << 1
             };
             AZ_DEFINE_ENUM_BITWISE_OPERATORS(StoreFlags);
 
@@ -150,6 +154,14 @@ namespace AzToolsFramework
                 [[maybe_unused]] const AZStd::string_view printMessage,
                 [[maybe_unused]] const AzToolsFramework::Prefab::PrefabDomValue& prefabDomValue);
 
+            //! An empty struct for passing to JsonSerializerSettings.m_metadata that is consumed by InstanceSerializer::Store.
+            //! If present in metadata, linkIds will be stored to instance dom.
+            struct LinkIdMetadata
+            {
+                AZ_RTTI(LinkIdMetadata, "{8FF7D299-14E3-41D4-90C5-393A240FAE7C}");
+
+                virtual ~LinkIdMetadata() {}
+            };
         } // namespace PrefabDomUtils
     } // namespace Prefab
 } // namespace AzToolsFramework

Code/Framework/AzToolsFramework/AzToolsFramework/Prefab/PrefabLoader.cpp

@@ -300,7 +300,7 @@ namespace AzToolsFramework
             }
 
             PrefabDom storedPrefabDom(&loadedTemplateDom->get().GetAllocator());
-            if (!PrefabDomUtils::StoreInstanceInPrefabDom(loadedPrefabInstance, storedPrefabDom))
+            if (!PrefabDomUtils::StoreInstanceInPrefabDom(loadedPrefabInstance, storedPrefabDom, PrefabDomUtils::StoreFlags::StoreLinkIds))
             {
                 return false;
             }

Code/Framework/AzToolsFramework/AzToolsFramework/PythonTerminal/ScriptHelpDialog.cpp

@@ -6,7 +6,6 @@
  *
  */
 
-
 // Description : For listing available script commands with their descriptions
 
 #include "ScriptHelpDialog.h"
@@ -23,6 +22,7 @@
 
 // AzToolsFramework
 #include <AzToolsFramework/API/EditorPythonConsoleBus.h>    // for EditorPythonConsoleInterface
+#include <AzToolsFramework/API/EditorWindowRequestBus.h>
 
 AZ_PUSH_DISABLE_DLL_EXPORT_MEMBER_WARNING
 #include <AzToolsFramework/PythonTerminal/ui_ScriptHelpDialog.h>
@@ -313,6 +313,45 @@ namespace AzToolsFramework
         connect(ui->tableView, &ScriptTableView::doubleClicked, this, &CScriptHelpDialog::OnDoubleClick);
     }
 
+    CScriptHelpDialog* CScriptHelpDialog::GetInstance()
+    {
+        static CScriptHelpDialog* pInstance = nullptr;
+        if (!pInstance)
+        {
+            QMainWindow* mainWindow = GetMainWindowOfCurrentApplication();
+            if (!mainWindow)
+            {
+                AZ_Assert(false, "Failed to find MainWindow.");
+                return nullptr;
+            }
+
+            QWidget* parentWidget = mainWindow->window()
+                ? mainWindow->window()
+                : mainWindow; // MainWindow might have a WindowDecorationWrapper parent. Makes a difference on macOS.
+            pInstance = new CScriptHelpDialog(parentWidget);
+        }
+        return pInstance;
+    }
+
+    QMainWindow* CScriptHelpDialog::GetMainWindowOfCurrentApplication()
+    {
+        QWidget* mainWindowWidget = nullptr;
+        EditorWindowRequestBus::BroadcastResult(mainWindowWidget, &EditorWindowRequests::GetAppMainWindow);
+        if (QMainWindow* mainWindow = qobject_cast<QMainWindow*>(mainWindowWidget))
+        {
+            return mainWindow;
+        }
+
+        for (QWidget* topLevelWidget : qApp->topLevelWidgets())
+        {
+            if (QMainWindow* mainWindow = qobject_cast<QMainWindow*>(topLevelWidget))
+            {
+                return mainWindow;
+            }
+        }
+        return nullptr;
+    }
+
     void CScriptHelpDialog::OnDoubleClick(const QModelIndex& index)
     {
         if (!index.isValid())

Code/Framework/AzToolsFramework/AzToolsFramework/PythonTerminal/ScriptHelpDialog.h

@@ -132,43 +132,13 @@ namespace AzToolsFramework
     {
         Q_OBJECT
     public:
-        static CScriptHelpDialog* GetInstance()
-        {
-            static CScriptHelpDialog* pInstance = nullptr;
-            if (!pInstance)
-            {
-                QMainWindow* mainWindow = GetMainWindowOfCurrentApplication();
-                if (!mainWindow)
-                {
-                    AZ_Assert(false, "Failed to find MainWindow.");
-                    return nullptr;
-                }
-
-                QWidget* parentWidget = mainWindow->window() ? mainWindow->window() : mainWindow; // MainWindow might have a WindowDecorationWrapper parent. Makes a difference on macOS.
-                pInstance = new CScriptHelpDialog(parentWidget);
-            }
-            return pInstance;
-        }
-
+        static CScriptHelpDialog* GetInstance();
     private Q_SLOTS:
         void OnDoubleClick(const QModelIndex&);
 
     private:
-        static QMainWindow* GetMainWindowOfCurrentApplication()
-        {
-            QMainWindow* mainWindow = nullptr;
-            for (QWidget* w : qApp->topLevelWidgets())
-            {
-                mainWindow = qobject_cast<QMainWindow*>(w);
-                if (mainWindow)
-                {
-                    return mainWindow;
-                }
-            }
-            return nullptr;
-        }
-
         explicit CScriptHelpDialog(QWidget* parent = nullptr);
+        static QMainWindow* GetMainWindowOfCurrentApplication();
         QScopedPointer<Ui::ScriptDialog> ui;
     };
 } // namespace AzToolsFramework

Code/Framework/AzToolsFramework/AzToolsFramework/UI/PropertyEditor/EntityPropertyEditor.hxx

@@ -19,6 +19,7 @@
 #include <AzCore/Component/Component.h>
 #include <AzCore/Component/ComponentBus.h>
 #include <AzCore/Component/EntityBus.h>
+#include <AzCore/Component/TickBus.h>
 #include <AzCore/Asset/AssetCommon.h>
 #include <AzToolsFramework/UI/PropertyEditor/PropertyEditorAPI.h>
 #include <AzToolsFramework/Undo/UndoSystem.h>
@@ -110,6 +111,7 @@ namespace AzToolsFramework
         , public EditorInspectorComponentNotificationBus::MultiHandler
         , private AzToolsFramework::ComponentModeFramework::EditorComponentModeNotificationBus::Handler
         , public AZ::EntitySystemBus::Handler
+        , public AZ::TickBus::Handler
         , private EditorWindowUIRequestBus::Handler
     {
         Q_OBJECT;
@@ -117,6 +119,23 @@ namespace AzToolsFramework
 
         AZ_CLASS_ALLOCATOR(EntityPropertyEditor, AZ::SystemAllocator, 0)
 
+        enum class ReorderState
+        {
+            Inactive, // No row widget reordering operation is in progress.
+            DraggingComponent, // User is dragging a component editor.
+            DraggingRowWidget, // User is dragging a row widget around.
+            UsingMenu, // User has the context menu open and may hover over a move up/down operation.
+            MenuOperationInProgress, // User has selected a move/up down menu item.
+            WaitForRedraw, // Wait for rebuild of RPE.
+            HighlightMovedRow // User has moved a row, highlight the new position.
+        };
+
+        enum class DropArea
+        {
+            Above,
+            Below
+        };
+
         EntityPropertyEditor(QWidget* pParent = NULL, Qt::WindowFlags flags = Qt::WindowFlags(), bool isLevelEntityEditor = false);
         virtual ~EntityPropertyEditor();
 
@@ -151,6 +170,16 @@ namespace AzToolsFramework
         bool IsLockedToSpecificEntities() const { return !m_overrideSelectedEntityIds.empty(); }
 
         static bool AreComponentsCopyable(const AZ::Entity::ComponentArrayType& components, const ComponentFilter& filter);
+
+        ReorderState GetReorderState() const;
+        ComponentEditor* GetEditorForCurrentReorderRowWidget() const;
+        PropertyRowWidget* GetReorderRowWidget() const;
+        PropertyRowWidget* GetReorderDropTarget() const;
+        DropArea GetReorderDropArea() const;
+        QPixmap GetReorderRowWidgetImage() const;
+        float GetMoveIndicatorAlpha() const;
+        PropertyRowWidget* GetRowToHighlight();
+
     Q_SIGNALS:
         void SelectedEntityNameChanged(const AZ::EntityId& entityId, const AZStd::string& name);
 
@@ -211,6 +240,9 @@ namespace AzToolsFramework
         void GetSelectedEntities(EntityIdList& selectedEntityIds) override;
         void SetNewComponentId(AZ::ComponentId componentId) override;
 
+        // TickBus
+        void OnTick(float deltaTime, AZ::ScriptTimePoint time) override;
+
         // EditorWindowRequestBus overrides
         void SetEditorUiEnabled(bool enable) override;
 
@@ -253,6 +285,10 @@ namespace AzToolsFramework
         void ContextMenuActionPullFieldData(AZ::Component* parentComponent, InstanceDataNode* fieldNode);
         void ContextMenuActionSetDataFlag(InstanceDataNode* node, AZ::DataPatch::Flag flag, bool additive);
 
+        void GenerateRowWidgetIndexMapToChildIndex(PropertyRowWidget* parent, int destIndex);
+        void ContextMenuActionMoveItemUp(ComponentEditor* componentEditor, PropertyRowWidget* rowWidget);
+        void ContextMenuActionMoveItemDown(ComponentEditor* componentEditor, PropertyRowWidget* rowWidget);
+
         /// Given an InstanceDataNode, calculate a DataPatch address relative to the entity.
         /// @return true if successful.
         bool GetEntityDataPatchAddress(const InstanceDataNode* componentFieldNode, AZ::DataPatch::AddressType& dataPatchAddressOut, AZ::EntityId* entityIdOut = nullptr) const;
@@ -341,8 +377,6 @@ namespace AzToolsFramework
         QAction* m_actionToMoveComponentsBottom = nullptr;
         QAction* m_resetToSliceAction = nullptr;
 
-        bool m_isShowingContextMenu = false;
-
         void CreateActions();
         void UpdateActions();
 
@@ -390,6 +424,10 @@ namespace AzToolsFramework
         void ResetToSlice();
 
         bool DoesOwnFocus() const;
+        AZ::u32 GetHeightOfRowAndVisibleChildren(const PropertyRowWidget* row) const;
+        QRect GetWidgetAndVisibleChildrenGlobalRect(const PropertyRowWidget* widget) const;
+        PropertyRowWidget* GetRowWidgetAtSameLevelAfter(PropertyRowWidget* widget) const;
+        PropertyRowWidget* GetRowWidgetAtSameLevelBefore(PropertyRowWidget* widget) const;
         QRect GetWidgetGlobalRect(const QWidget* widget) const;
         bool DoesIntersectWidget(const QRect& globalRect, const QWidget* widget) const;
         bool DoesIntersectSelectedComponentEditor(const QRect& globalRect) const;
@@ -445,6 +483,8 @@ namespace AzToolsFramework
         bool HandleSelectionEvents(QObject* object, QEvent* event);
         bool m_selectionEventAccepted;
 
+        bool HandleMenuEvent(QObject* object, QEvent* event);
+
         // drag and drop events
         QRect GetInflatedRectFromPoint(const QPoint& point, int radius) const;
         bool GetComponentsAtDropEventPosition(QDropEvent* event, AZ::Entity::ComponentArrayType& targetComponents);
@@ -458,8 +498,12 @@ namespace AzToolsFramework
 
         ComponentEditor* GetReorderDropTarget(const QRect& globalRect) const;
         bool ResetDrag(QMouseEvent* event);
+        bool FindAllowedRowWidgetReorderDropTarget(const QPoint& globalPos);
+        bool UpdateRowWidgetDrag(const QPoint& localPos, Qt::MouseButtons mouseButtons, const QMimeData* mimeData);
+        PropertyRowWidget* FindPropertyRowWidgetAt(QPoint globalPos);
         bool UpdateDrag(const QPoint& localPos, Qt::MouseButtons mouseButtons, const QMimeData* mimeData);
         bool StartDrag(QMouseEvent* event);
+        void EndRowWidgetReorder();
         bool HandleDrop(QDropEvent* event);
         bool HandleDropForComponentTypes(QDropEvent* event);
         bool HandleDropForComponentAssets(QDropEvent* event);
@@ -468,6 +512,8 @@ namespace AzToolsFramework
         bool CanDropForComponentTypes(const QMimeData* mimeData) const;
         bool CanDropForComponentAssets(const QMimeData* mimeData) const;
         bool CanDropForAssetBrowserEntries(const QMimeData* mimeData) const;
+        void SetRowWidgetHighlighted(PropertyRowWidget* rowWidget);
+
         AZStd::vector<AZ::s32> ExtractComponentEditorIndicesFromMimeData(const QMimeData* mimeData) const;
         ComponentEditorVector GetComponentEditorsFromIndices(const AZStd::vector<AZ::s32>& indices) const;
         ComponentEditor* GetComponentEditorsFromIndex(const AZ::s32 index) const;
@@ -559,6 +605,8 @@ namespace AzToolsFramework
 
         QIcon m_emptyIcon;
         QIcon m_clearIcon;
+        QIcon m_dragIcon;
+        QCursor m_dragCursor;
 
         QStandardItem* m_comboItems[StatusItems];
         EntityIdSet m_overrideSelectedEntityIds;
@@ -566,6 +614,19 @@ namespace AzToolsFramework
         Prefab::PrefabPublicInterface* m_prefabPublicInterface = nullptr;
         bool m_prefabsAreEnabled = false;
 
+        // Reordering row widgets within the RPE.
+        static constexpr float MoveFadeSeconds = 0.5f;
+
+        ReorderState m_currentReorderState = ReorderState::Inactive;
+        ComponentEditor* m_reorderRowWidgetEditor = nullptr;
+        InstanceDataNode* m_nodeToMove = nullptr;
+        PropertyRowWidget* m_reorderRowWidget = nullptr;
+        PropertyRowWidget* m_reorderDropTarget = nullptr;
+        DropArea m_reorderDropArea = DropArea::Above;
+        QPixmap m_reorderRowImage;
+        float m_moveFadeSecondsRemaining;
+        AZStd::vector<int> m_indexMapOfMovedRow;
+
         // When m_initiatingPropertyChangeNotification is set to true, it means this EntityPropertyEditor is
         // broadcasting a change to all listeners about a property change for a given entity.  This is needed
         // so that we don't update the values twice for this inspector
@@ -573,6 +634,9 @@ namespace AzToolsFramework
         void ConnectToEntityBuses(const AZ::EntityId& entityId);
         void DisconnectFromEntityBuses(const AZ::EntityId& entityId);
 
+        void BeginMoveRowWidgetFade();
+        void HighlightMovedRowWidget();
+
         //! Stores a component id to be focused on next time the UI updates.
         AZStd::optional<AZ::ComponentId> m_newComponentId;
 
@@ -594,6 +658,8 @@ namespace AzToolsFramework
 
         bool SelectedEntitiesAreFromSameSourceSliceEntity() const;
 
+        void DragStopped();
+
         AZ::Entity* GetSelectedEntityById(AZ::EntityId& entityId) const;
     };
 

Code/Framework/AzToolsFramework/AzToolsFramework/UI/PropertyEditor/PropertyAudioCtrl.cpp

@@ -7,8 +7,8 @@
  */
 
 
-#include "PropertyAudioCtrl.h"
-#include "PropertyQTConstants.h"
+#include <UI/PropertyEditor/PropertyAudioCtrl.h>
+#include <UI/PropertyEditor/PropertyQTConstants.h>
 
 #include <QtWidgets/QLabel>
 #include <QtWidgets/QLineEdit>
@@ -34,7 +34,7 @@ namespace AzToolsFramework
         : QWidget(parent)
         , m_browseEdit(nullptr)
         , m_mainLayout(nullptr)
-        , m_propertyType(AudioPropertyType::Invalid)
+        , m_propertyType(AudioPropertyType::NumTypes)
     {
         // create the gui
         m_mainLayout = new QHBoxLayout();
@@ -96,7 +96,7 @@ namespace AzToolsFramework
             return;
         }
 
-        if (type != AudioPropertyType::Invalid)
+        if (type != AudioPropertyType::NumTypes)
         {
             m_propertyType = type;
         }
@@ -136,10 +136,11 @@ namespace AzToolsFramework
 
     void AudioControlSelectorWidget::OnOpenAudioControlSelector()
     {
-        AZStd::string resourceResult;
-        AZStd::string resourceType(GetResourceSelectorNameFromType(m_propertyType));
         AZStd::string currentValue(m_controlName.toStdString().c_str());
-        EditorRequests::Bus::BroadcastResult(resourceResult, &EditorRequests::Bus::Events::SelectResource, resourceType, currentValue);
+        AZStd::string resourceResult;
+        AudioControlSelectorRequestBus::EventResult(
+            resourceResult, m_propertyType,
+            &AudioControlSelectorRequestBus::Events::SelectResource, currentValue);
         SetControlName(QString(resourceResult.c_str()));
     }
 
@@ -167,12 +168,12 @@ namespace AzToolsFramework
         {
         case AudioPropertyType::Trigger:
             return { "AudioTrigger" };
+        case AudioPropertyType::Rtpc:
+            return { "AudioRTPC" };
         case AudioPropertyType::Switch:
             return { "AudioSwitch" };
         case AudioPropertyType::SwitchState:
             return { "AudioSwitchState" };
-        case AudioPropertyType::Rtpc:
-            return { "AudioRTPC" };
         case AudioPropertyType::Environment:
             return { "AudioEnvironment" };
         case AudioPropertyType::Preload:

Code/Framework/AzToolsFramework/AzToolsFramework/UI/PropertyEditor/PropertyAudioCtrl.h

@@ -29,6 +29,27 @@ class QMimeData;
 
 namespace AzToolsFramework
 {
+    //=============================================================================
+    // Audio Control Selector Request Bus
+    // For connecting UI proper
+    //=============================================================================
+    class AudioControlSelectorRequests
+        : public AZ::EBusTraits
+    {
+    public:
+        // EBusTraits
+        static const AZ::EBusAddressPolicy AddressPolicy = AZ::EBusAddressPolicy::ById;
+        static const AZ::EBusHandlerPolicy HandlerPolicy = AZ::EBusHandlerPolicy::Single;
+        using BusIdType = AudioPropertyType;
+
+        virtual AZStd::string SelectResource(AZStd::string_view previousValue)
+        {
+            return previousValue;
+        }
+    };
+
+    using AudioControlSelectorRequestBus = AZ::EBus<AudioControlSelectorRequests>;
+
     //=============================================================================
     // Audio Control Selector Widget
     //=============================================================================

Code/Framework/AzToolsFramework/AzToolsFramework/UI/PropertyEditor/PropertyAudioCtrlTypes.h

@@ -18,15 +18,15 @@
 namespace AzToolsFramework
 {
     //=========================================================================
-    enum class AudioPropertyType
+    enum class AudioPropertyType : AZ::u32
     {
-        Invalid = 0,
-        Trigger,
+        Trigger = 0,
+        Rtpc,
         Switch,
         SwitchState,
-        Rtpc,
         Environment,
         Preload,
+        NumTypes,
     };
 
     //=========================================================================
@@ -40,7 +40,7 @@ namespace AzToolsFramework
         virtual ~CReflectedVarAudioControl() = default;
 
         AZStd::string m_controlName;
-        AudioPropertyType m_propertyType = AudioPropertyType::Invalid;
+        AudioPropertyType m_propertyType = AudioPropertyType::NumTypes;
 
         static void Reflect(AZ::ReflectContext* context)
         {

Code/Framework/AzToolsFramework/AzToolsFramework/UI/PropertyEditor/PropertyRowWidget.cpp

@@ -368,10 +368,15 @@ namespace AzToolsFramework
             delete m_containerAddButton;
         }
 
+        this->unsetCursor();
+
         if ((m_parentRow) && (m_parentRow->IsContainerEditable()))
         {
             if (!m_elementRemoveButton)
             {
+                QIcon icon = QIcon(QStringLiteral(":/Cursors/Grab_release.svg"));
+                this->setCursor(QCursor(icon.pixmap(16), 5, 2));
+
                 static QIcon s_iconRemove(QStringLiteral(":/stylesheet/img/UI20/delete-16.svg"));
                 m_elementRemoveButton = new QToolButton(this);
                 m_elementRemoveButton->setAutoRaise(true);
@@ -570,7 +575,12 @@ namespace AzToolsFramework
         AZ_Assert(m_selectionEnabled, "Property is not selectable");
         m_isSelected = selected;
         m_nameLabel->setProperty("selected", selected);
-    }    
+    }
+
+    bool PropertyRowWidget::GetSelected()
+    {
+        return m_isSelected;
+    }   
     
     void PropertyRowWidget::SetSelectionEnabled(bool selectionEnabled)
     {
@@ -1395,6 +1405,21 @@ namespace AzToolsFramework
         return !m_childrenRows.empty(); 
     }
 
+    AZ::u32 PropertyRowWidget::GetChildRowCount() const
+    {
+        return static_cast<AZ::u32>(m_childrenRows.size());
+    }
+
+    PropertyRowWidget* PropertyRowWidget::GetChildRowByIndex(AZ::u32 index) const
+    {
+        if (index >= m_childrenRows.size())
+        {
+            return nullptr;
+        }
+
+        return m_childrenRows[index];
+    }
+
     bool PropertyRowWidget::ShouldPreValidatePropertyChange() const
     {
         return (m_changeValidators.size() > 0);
@@ -1722,6 +1747,162 @@ namespace AzToolsFramework
 
         return m_parentRow->CanChildrenBeReordered();
     }
+
+        int PropertyRowWidget::GetIndexInParent() const
+    {
+        if (!GetParentRow())
+        {
+            return -1;
+        }
+
+        for (AZ::u32 index = 0; index < GetParentRow()->GetChildRowCount(); index++)
+        {
+            if (GetParentRow()->GetChildrenRows()[index] == this)
+            {
+                return index;
+            }
+        }
+
+        return -1;
+    }
+
+    bool PropertyRowWidget::CanMoveUp() const
+    {
+        if (!CanBeReordered())
+        {
+            return false;
+        }
+
+        return this != m_parentRow->GetChildRowByIndex(0);
+    }
+
+    bool PropertyRowWidget::CanMoveDown() const
+    {
+        if (!CanBeReordered())
+        {
+            return false;
+        }
+
+        AZ::u32 numChildrenOfParent = m_parentRow->GetChildRowCount();
+
+        return this != m_parentRow->GetChildRowByIndex(numChildrenOfParent - 1);
+    }
+
+    int PropertyRowWidget::GetContainingEditorFrameWidth()
+    {
+        QWidget* parent = parentWidget();
+
+        // Find the first ancestor that can be cast to a QFrame, this will be the RPE.
+        while (!qobject_cast<QFrame*>(parent))
+        {
+            parent = parent->parentWidget();
+        }
+
+        if (!parent)
+        {
+            return 0;
+        }
+
+        // The parent of the RPE is the size we want.
+        parent = parent->parentWidget();
+        
+        return parent->rect().width();
+    }
+
+    int PropertyRowWidget::GetHeightOfRowAndVisibleChildren()
+    {
+        int height = rect().height();
+
+        if (!GetChildRowCount() || !IsExpanded())
+        {
+            return height;
+        }
+
+        for (auto childRow : GetChildrenRows())
+        {
+            height += childRow->GetHeightOfRowAndVisibleChildren();
+        }
+
+        return height;
+    }
+
+    int PropertyRowWidget::DrawDragImageAndVisibleChildrenInto(QPainter& painter, int xpos, int ypos)
+    {
+        // Render our image into the given painter.
+        int ystart = ypos;
+
+        render(&painter, QPoint(xpos, ypos));
+
+        if (!GetChildRowCount() || !IsExpanded())
+        {
+            return rect().height();
+        }
+
+        ypos += rect().height();
+
+        // Recursively draw any children.
+        for (auto childRow : GetChildrenRows())
+        {
+            ypos += childRow->DrawDragImageAndVisibleChildrenInto(painter, xpos, ypos);
+        }
+
+        return ypos - ystart;
+    }
+
+    QPixmap PropertyRowWidget::createDragImage(
+        const QColor backgroundColor, const QColor borderColor, const float alpha, DragImageType imageType)
+    {
+        // Make the drag box as wide as the containing editor minus a gap each side for the border.
+        static constexpr int ParentEditorBorderSize = 2;
+        int width = GetContainingEditorFrameWidth() - ParentEditorBorderSize * 2;
+        int height = 0;
+
+        if (imageType == DragImageType::IncludeVisibleChildren)
+        {
+            height = GetHeightOfRowAndVisibleChildren();
+        }
+        else
+        {
+            height = rect().height();
+        }
+
+        const auto dpr = devicePixelRatioF();
+        QPixmap dragImage(width * dpr, height * dpr);
+        dragImage.setDevicePixelRatio(dpr);
+        dragImage.fill(Qt::transparent);
+
+        QRect imageRect = QRect(0, 0, width, height);
+
+        QPainter dragPainter(&dragImage);
+        dragPainter.setCompositionMode(QPainter::CompositionMode_Source);
+        dragPainter.fillRect(imageRect, Qt::transparent);
+        dragPainter.setCompositionMode(QPainter::CompositionMode_SourceOver);
+        dragPainter.setOpacity(alpha);
+        dragPainter.fillRect(imageRect, backgroundColor);
+
+        dragPainter.setOpacity(1.0f);
+
+        int marginWidth = (imageRect.width() - rect().width()) / 2 + ParentEditorBorderSize - 1;
+
+        if (imageType == DragImageType::IncludeVisibleChildren)
+        {
+            DrawDragImageAndVisibleChildrenInto(dragPainter, marginWidth, 0);
+        }
+        else
+        {
+            render(&dragPainter, QPoint(marginWidth, 0));
+        }
+
+        QPen pen;
+        pen.setColor(QColor(borderColor));
+        pen.setWidth(1);
+        dragPainter.setPen(pen);
+        dragPainter.drawRect(0, 0, imageRect.width() - 1, imageRect.height() - 1);
+
+        dragPainter.end();
+
+        return dragImage;
+    }
 }
 
 #include "UI/PropertyEditor/moc_PropertyRowWidget.cpp"

Code/Framework/AzToolsFramework/AzToolsFramework/UI/PropertyEditor/PropertyRowWidget.hxx

@@ -45,6 +45,13 @@ namespace AzToolsFramework
         Q_PROPERTY(bool appendDefaultLabelToName READ GetAppendDefaultLabelToName WRITE AppendDefaultLabelToName)
     public:
         AZ_CLASS_ALLOCATOR(PropertyRowWidget, AZ::SystemAllocator, 0)
+
+        enum class DragImageType
+        {
+            SingleRow,
+            IncludeVisibleChildren
+        };
+
         PropertyRowWidget(QWidget* pParent);
         virtual ~PropertyRowWidget();
 
@@ -86,6 +93,9 @@ namespace AzToolsFramework
         bool GetAppendDefaultLabelToName();
         void AppendDefaultLabelToName(bool doAppend);
 
+        AZ::u32 GetChildRowCount() const;
+        PropertyRowWidget* GetChildRowByIndex(AZ::u32 index) const;
+
         AZStd::vector<PropertyRowWidget*>& GetChildrenRows() { return m_childrenRows; }
         bool HasChildRows() const;
 
@@ -124,6 +134,7 @@ namespace AzToolsFramework
 
         void SetSelectionEnabled(bool selectionEnabled);
         void SetSelected(bool selected);
+        bool GetSelected();
         bool eventFilter(QObject *watched, QEvent *event) override;
         void paintEvent(QPaintEvent*) override;
 
@@ -152,9 +163,18 @@ namespace AzToolsFramework
         bool CanChildrenBeReordered() const;
         bool CanBeReordered() const;
 
+        int GetIndexInParent() const;
+        bool CanMoveUp() const;
+        bool CanMoveDown() const;
+
+        int GetContainingEditorFrameWidth();
+        QPixmap createDragImage(const QColor backgroundColor, const QColor borderColor, const float alpha, DragImageType imageType);
     protected:
         int CalculateLabelWidth() const;
 
+        int GetHeightOfRowAndVisibleChildren();
+        int DrawDragImageAndVisibleChildrenInto(QPainter& painter, int xpos, int ypos);
+
         bool IsHidden(InstanceDataNode* node) const;
 
         struct ChangeNotification;
@@ -216,6 +236,7 @@ namespace AzToolsFramework
         bool m_isMultiSizeContainer = false;
         bool m_isFixedSizeOrSmartPtrContainer = false;
         bool m_custom = false;
+        bool m_canChildrenBeReordered = false;
 
         bool m_isSelected = false;
         bool m_selectionEnabled = false;

Code/Framework/AzToolsFramework/AzToolsFramework/UI/PropertyEditor/ReflectedPropertyEditor.cpp

@@ -19,6 +19,7 @@
 #include <QtWidgets/QVBoxLayout>
 #include <QtWidgets/QScrollArea>
 #include <QtWidgets/QApplication>
+#include <QPainter>
 AZ_PUSH_DISABLE_WARNING(4251, "-Wunknown-warning-option") // 'QTextFormat::d': class 'QSharedDataPointer<QTextFormatPrivate>' needs to have dll-interface to be used by clients of class 'QTextFormat'
 #include <QtWidgets/QInputDialog>
 AZ_POP_DISABLE_WARNING
@@ -1343,7 +1344,7 @@ namespace AzToolsFramework
 
     // calculate the index/offset of the instance data node in the container
     // (useful for notifying which element in a vector was modified/removed)
-    static size_t CalculateElementIndexInContainer(
+    static int CalculateElementIndexInContainer(
         InstanceDataNode* node, void* parentInstanceNode,
         AZ::SerializeContext::IDataContainer* container, AZStd::vector<void*>& nodeInstancesOut)
     {
@@ -1358,7 +1359,7 @@ namespace AzToolsFramework
             }
         }
 
-        size_t elementIndex = 0;
+        int elementIndex = 0;
         void* elementPtr = nodeInstancesOut.empty() ? nullptr : nodeInstancesOut.front();
 
         // find the index of the element we are about to remove
@@ -1429,7 +1430,7 @@ namespace AzToolsFramework
 
                 // if the element being modified exists in a container, calculate
                 // the index to be passed through to PropertyNotify
-                const auto calculateElementIndex = [](InstanceDataNode* node) -> size_t {
+                const auto calculateElementIndex = [](InstanceDataNode* node) -> int {
                     if (InstanceDataNode* parent = node->GetParent())
                     {
                         if (AZ::SerializeContext::IDataContainer* container = parent->GetClassMetadata()->m_container)
@@ -1656,6 +1657,221 @@ namespace AzToolsFramework
             AzToolsFramework::Refresh_EntireTree);
     }
 
+    InstanceDataNode* ReflectedPropertyEditor::FindContainerNodeForNode(InstanceDataNode* node) const
+    {
+        // Locate the owning container. There may be a level of indirection due to wrappers, such as DynamicSerializableField.
+        InstanceDataNode* pContainerNode = node->GetParent();
+        if (!pContainerNode)
+        {
+            return nullptr;
+        }
+
+        while (pContainerNode && !pContainerNode->GetClassMetadata()->m_container)
+        {
+            pContainerNode = pContainerNode->GetParent();
+            node = node->GetParent();
+        }
+
+        // Check for pContainerNode again, can happen if a node is deleted during operation.
+        if (!pContainerNode)
+        {
+            return nullptr;
+        }
+
+        if (IsParentAssociativeContainer(pContainerNode) && IsPairContainer(pContainerNode))
+        {
+            // Go up one more level to the associative container, we'll remove the pair from that container
+            pContainerNode = pContainerNode->GetParent();
+            node = node->GetParent();
+        }
+
+        AZ_Assert(
+            pContainerNode, "Failed to locate parent container for element \"%s\" of type %s.",
+            node->GetElementMetadata() ? node->GetElementMetadata()->m_name : node->GetClassMetadata()->m_name,
+            node->GetClassMetadata()->m_typeId.ToString<AZStd::string>().c_str());
+
+        return pContainerNode;
+    }
+
+    InstanceDataNode* ReflectedPropertyEditor::GetNodeAtIndex(int index)
+    {
+        if (index >= m_impl->m_widgetsInDisplayOrder.size())
+        {
+            return nullptr;
+        }
+
+        return GetNodeFromWidget(m_impl->m_widgetsInDisplayOrder[index]);
+    }
+
+    QSet<PropertyRowWidget*> ReflectedPropertyEditor::GetTopLevelWidgets()
+    {
+        return m_impl->getTopLevelWidgets();
+    }
+
+    void ReflectedPropertyEditor::ChangeNodeIndex(InstanceDataNode* containerNode, InstanceDataNode* node, int fromIndex, int toIndex)
+    {
+        auto container = containerNode->GetElementMetadata()
+            ? containerNode->GetElementMetadata()->m_genericClassInfo->GetClassData()->m_container
+            : nullptr;
+
+        if (fromIndex == toIndex)
+        {
+            return;
+        }
+
+        if (!container || container->GetAssociativeContainerInterface())
+        {
+            return;
+        }
+
+        AZ::Uuid typeId = node->GetClassMetadata()->m_typeId;
+
+        if (m_impl->m_ptrNotify)
+        {
+            m_impl->m_ptrNotify->BeforePropertyModified(containerNode);
+        }
+
+        const AZ::SerializeContext::ClassElement* containerClassElement = container->GetElement(container->GetDefaultElementNameCrc());
+
+        AZ::SerializeContext* serializeContext = nullptr;
+        AZ::ComponentApplicationBus::BroadcastResult(serializeContext, &AZ::ComponentApplicationBus::Events::GetSerializeContext);
+
+        // Backup the item we're moving.
+        void* srcElement = nullptr;
+        void* destElement = nullptr;
+
+        int destIndex = -1;
+        int srcIndex = fromIndex;
+
+        srcElement = container->GetElementByIndex(containerNode->GetInstance(0), containerClassElement, srcIndex);
+
+        void* tmpBuffer = serializeContext->CloneObject(srcElement, typeId);
+
+        // Shuffle all intervening items up (or down).
+        int indexOffset = (toIndex < fromIndex) ? -1 : 1;
+
+        while (destIndex != toIndex - indexOffset)
+        {
+            destIndex = srcIndex;
+            srcIndex += indexOffset;
+
+            destElement = srcElement;
+
+            srcElement = container->GetElementByIndex(containerNode->GetInstance(0), containerClassElement, srcIndex);
+
+            serializeContext->CloneObjectInplace(destElement, srcElement, typeId);
+        }
+
+        // Now replace the final element with the one backed up previously.
+        destElement = srcElement;
+
+        serializeContext->CloneObjectInplace(destElement, tmpBuffer, typeId);
+
+        if (m_impl->m_ptrNotify)
+        {
+            m_impl->m_ptrNotify->AfterPropertyModified(containerNode);
+            m_impl->m_ptrNotify->SealUndoStack();
+        }
+
+        // Need to refresh any pinned inspectors as well to keep the container state in sync
+        QueueInvalidation(Refresh_Values);
+        AzToolsFramework::ToolsApplicationEvents::Bus::Broadcast(
+            &AzToolsFramework::ToolsApplicationEvents::InvalidatePropertyDisplay, AzToolsFramework::Refresh_Values);
+    }
+
+    void ReflectedPropertyEditor::MoveNodeToIndex(InstanceDataNode* node, int index)
+    {
+        InstanceDataNode* pContainerNode = FindContainerNodeForNode(node);
+
+        if (!pContainerNode)
+        {
+            return;
+        }
+
+        AZ::SerializeContext::IDataContainer* container = pContainerNode->GetClassMetadata()->m_container;
+
+        AZStd::vector<void*> nodeInstancesOut;
+        const int elementIndex = CalculateElementIndexInContainer(node, pContainerNode->GetInstance(0), container, nodeInstancesOut);
+
+        ChangeNodeIndex(pContainerNode, node, elementIndex, index);
+    }
+
+    void ReflectedPropertyEditor::MoveNodeBefore(InstanceDataNode* nodeToMove, InstanceDataNode* nodeToMoveBefore)
+    {
+        InstanceDataNode* pContainerNode = FindContainerNodeForNode(nodeToMove);
+        InstanceDataNode* pContainerNodeTarget = FindContainerNodeForNode(nodeToMoveBefore);
+
+        if (nodeToMove == nodeToMoveBefore)
+        {
+            return;
+        }
+
+        // Can only move nodes within the same parent.
+        if (pContainerNode != pContainerNodeTarget)
+        {
+            return;
+        }
+
+        AZ::SerializeContext::IDataContainer* container = pContainerNode->GetClassMetadata()->m_container;
+
+        AZStd::vector<void*> nodeInstancesOut;
+        int elementIndex = CalculateElementIndexInContainer(nodeToMove, pContainerNode->GetInstance(0), container, nodeInstancesOut);
+        nodeInstancesOut.clear();
+        int elementIndexTarget =
+            CalculateElementIndexInContainer(nodeToMoveBefore, pContainerNode->GetInstance(0), container, nodeInstancesOut);
+
+        if (elementIndex < elementIndexTarget)
+        {
+            elementIndexTarget -= 1;
+        }
+
+        ChangeNodeIndex(pContainerNode, nodeToMove, elementIndex, elementIndexTarget);
+    }
+
+    void ReflectedPropertyEditor::MoveNodeAfter(InstanceDataNode* nodeToMove, InstanceDataNode* nodeToMoveBefore)
+    {
+        InstanceDataNode* pContainerNode = FindContainerNodeForNode(nodeToMove);
+        InstanceDataNode* pContainerNodeTarget = FindContainerNodeForNode(nodeToMoveBefore);
+
+        if (nodeToMove == nodeToMoveBefore)
+        {
+            return;
+        }
+
+        // Can only move nodes within the same parent.
+        if (pContainerNode != pContainerNodeTarget)
+        {
+            return;
+        }
+
+        AZ::SerializeContext::IDataContainer* container = pContainerNode->GetClassMetadata()->m_container;
+
+        AZStd::vector<void*> nodeInstancesOut;
+        int elementIndex = CalculateElementIndexInContainer(nodeToMove, pContainerNode->GetInstance(0), container, nodeInstancesOut);
+        nodeInstancesOut.clear();
+        int elementIndexTarget =
+            CalculateElementIndexInContainer(nodeToMoveBefore, pContainerNode->GetInstance(0), container, nodeInstancesOut);
+
+        if (elementIndex > elementIndexTarget)
+        {
+            elementIndexTarget += 1;
+        }
+
+        ChangeNodeIndex(pContainerNode, nodeToMove, elementIndex, elementIndexTarget);
+    }
+
+    int ReflectedPropertyEditor::GetNodeIndexInContainer(InstanceDataNode* node)
+    {
+        InstanceDataNode* pContainerNode = FindContainerNodeForNode(node);
+
+        AZ::SerializeContext::IDataContainer* container = pContainerNode->GetClassMetadata()->m_container;
+
+        AZStd::vector<void*> nodeInstancesOut;
+        int elementIndex = CalculateElementIndexInContainer(node, pContainerNode->GetInstance(0), container, nodeInstancesOut);
+
+        return elementIndex;
+    }
+
     void ReflectedPropertyEditor::OnPropertyRowRequestContainerRemoveItem(PropertyRowWidget* widget, InstanceDataNode* node)
     {
         // Locate the owning container. There may be a level of indirection due to wrappers, such as DynamicSerializableField.
@@ -1690,7 +1906,7 @@ namespace AzToolsFramework
 
         // the index of the element being removed
         AZStd::vector<void*> nodeInstancesOut;
-        const size_t elementIndex = CalculateElementIndexInContainer(
+        const int elementIndex = CalculateElementIndexInContainer(
             node, pContainerNode->GetInstance(0), container, nodeInstancesOut);
 
         // pass the context as the last parameter to actually delete the related data.

Code/Framework/AzToolsFramework/AzToolsFramework/UI/PropertyEditor/ReflectedPropertyEditor.hxx

@@ -155,9 +155,19 @@ namespace AzToolsFramework
         using VisibilityCallback = AZStd::function<void(InstanceDataNode* node, NodeDisplayVisibility& visibility, bool& checkChildVisibility)>;
         void SetVisibilityCallback(VisibilityCallback callback);
 
+        void MoveNodeToIndex(InstanceDataNode* node, int index);
+        void MoveNodeBefore(InstanceDataNode* nodeToMove, InstanceDataNode* nodeToMoveBefore);
+        void MoveNodeAfter(InstanceDataNode* nodeToMove, InstanceDataNode* nodeToMoveBefore);
+
+        int GetNodeIndexInContainer(InstanceDataNode* node);
+        InstanceDataNode* GetNodeAtIndex(int index);
+        QSet<PropertyRowWidget*> GetTopLevelWidgets();
     signals:
         void OnExpansionContractionDone();
     private:
+        InstanceDataNode* FindContainerNodeForNode(InstanceDataNode* node) const;
+        void ChangeNodeIndex(InstanceDataNode* containerNode, InstanceDataNode* node, int oldIndex, int newIndex);
+
         class Impl;
         std::unique_ptr<Impl> m_impl;
         

Code/Framework/AzToolsFramework/AzToolsFramework/UnitTest/AzToolsFrameworkTestHelpers.cpp

@@ -27,6 +27,35 @@ using namespace AzToolsFramework;
 
 namespace UnitTest
 {
+    void MousePressAndMove(
+        QWidget* widget, const QPoint& initialPositionWidget, const QPoint& mouseDelta, const Qt::MouseButton mouseButton)
+    {
+        QPoint position = widget->mapToGlobal(initialPositionWidget);
+        QTest::mousePress(widget, mouseButton, Qt::NoModifier, position);
+
+        MouseMove(widget, initialPositionWidget, mouseDelta, mouseButton);
+    }
+
+    // Note: There are a series of bugs in Qt that appear to be preventing mouseMove events
+    // firing when sent through the QTest framework. This is a work around for our version
+    // of Qt. In future this can hopefully be simplified. See ^1 for workaround.
+    // More info: Issues with mouse move in Qt
+    // - https://bugreports.qt.io/browse/QTBUG-5232
+    // - https://bugreports.qt.io/browse/QTBUG-69414
+    // - https://lists.qt-project.org/pipermail/development/2019-July/036873.html
+    void MouseMove(QWidget* widget, const QPoint& initialPositionWidget, const QPoint& mouseDelta, const Qt::MouseButton mouseButton)
+    {
+        QPoint nextPosition = widget->mapToGlobal(initialPositionWidget + mouseDelta);
+
+        // ^1 To ensure a mouse move event is fired we must call the test mouse move function
+        // and also send a mouse move event that matches. Each on their own do not appear to
+        // work - please see the links above for more context.
+        QTest::mouseMove(widget, nextPosition);
+        QMouseEvent mouseMoveEvent(
+            QEvent::MouseMove, QPointF(nextPosition), QPointF(nextPosition), Qt::NoButton, mouseButton, Qt::NoModifier);
+        QApplication::sendEvent(widget, &mouseMoveEvent);
+    }
+
     bool TestWidget::eventFilter(QObject* watched, QEvent* event)
     {
         AZ_UNUSED(watched);

Code/Framework/AzToolsFramework/AzToolsFramework/UnitTest/AzToolsFrameworkTestHelpers.h

@@ -59,6 +59,21 @@ namespace UnitTest
 {
     constexpr AZStd::string_view prefabSystemSetting = "/Amazon/Preferences/EnablePrefabSystem";
 
+    /// Performs a mouse press and move event on the provided widget.
+    /// @param widget The widget to perform the mouse press and move on.
+    /// @param initialPositionWidget The position of the mouse relative to the widget (will be remapped to a global position internally).
+    /// @param mouseDelta How far to move the mouse.
+    /// @param mouseButton The button to be used during the press and move.
+    void MousePressAndMove(
+        QWidget* widget, const QPoint& initialPositionWidget, const QPoint& mouseDelta, Qt::MouseButton mouseButton = Qt::LeftButton);
+
+    /// Performs a mouse move event on the provided widget.
+    /// @param widget The widget to perform the mouse move on.
+    /// @param initialPositionWidget The position of the mouse relative to the widget (will be remapped to a global position internally).
+    /// @param mouseDelta How far to move the mouse (note: mouseDelta may be zero and the mouse will only be moved to initialPosition).
+    /// @param mouseButton The button to be held during the move.
+    void MouseMove(QWidget* widget, const QPoint& initialPosition, const QPoint& mouseDelta, Qt::MouseButton mouseButton = Qt::NoButton);
+
     /// Test widget to store QActions generated by EditorTransformComponentSelection.
     class TestWidget : public QWidget
     {

Code/Framework/AzToolsFramework/AzToolsFramework/Viewport/ViewportMessages.h

@@ -313,7 +313,7 @@ namespace AzToolsFramework
     //! Utility function to return EntityContextId.
     inline AzFramework::EntityContextId GetEntityContextId()
     {
-        AzFramework::EntityContextId entityContextId;
+        auto entityContextId = AzFramework::EntityContextId::CreateNull();
         EditorEntityContextRequestBus::BroadcastResult(entityContextId, &EditorEntityContextRequests::GetEditorEntityContextId);
 
         return entityContextId;

Code/Framework/AzToolsFramework/CMakeLists.txt

@@ -60,6 +60,7 @@ if(PAL_TRAIT_BUILD_TESTS_SUPPORTED)
             PUBLIC
                 AZ::AzTestShared
             PRIVATE
+                3rdParty::Qt::Test
                 3rdParty::googletest::GMock
                 3rdParty::GoogleBenchmark
                 AZ::AzToolsFramework
@@ -76,8 +77,9 @@ if(PAL_TRAIT_BUILD_TESTS_SUPPORTED)
             PRIVATE
                 Tests
         BUILD_DEPENDENCIES
-            PRIVATE
+            PUBLIC
                 AZ::AzTestShared
+            PRIVATE
                 3rdParty::Qt::Test
                 AZ::AzFrameworkTestShared
                 AZ::AzToolsFramework

Code/Framework/AzToolsFramework/Tests/SpinBoxTests.cpp

@@ -107,31 +107,6 @@ namespace UnitTest
         EXPECT_THAT(m_doubleSpinBoxWithLineEdit, Ne(nullptr));
     }
 
-    // Note: There are a series of bugs in Qt that appear to be preventing mouseMove events
-    // firing when sent through the QTest framework. This is a work around for our version
-    // of Qt. In future this can hopefully be simplified. See ^1 for workaround.
-    // More info: Issues with mouse move in Qt
-    // - https://bugreports.qt.io/browse/QTBUG-5232
-    // - https://bugreports.qt.io/browse/QTBUG-69414
-    // - https://lists.qt-project.org/pipermail/development/2019-July/036873.html
-    void MousePressAndMove(
-        QWidget* widget, const QPoint& widgetScreenPosition, const QPoint& mouseDelta)
-    {
-        QPoint position = widget->mapToGlobal(widgetScreenPosition);
-        QPoint nextPosition = widget->mapToGlobal(widgetScreenPosition + mouseDelta);
-
-        QTest::mousePress(widget, Qt::LeftButton, Qt::NoModifier, position);
-
-        // ^1 To ensure a mouse move event is fired we must call the test mouse move function
-        // and also send a mouse move event that matches. Each on their own do not appear to
-        // work - please see the links above for more context.
-        QTest::mouseMove(widget, nextPosition);
-        QMouseEvent mouseMoveEvent(
-            QEvent::MouseMove, QPointF(nextPosition), QPointF(nextPosition),
-            Qt::NoButton, Qt::LeftButton, Qt::NoModifier);
-        QApplication::sendEvent(widget, &mouseMoveEvent);
-    }
-
     TEST_F(SpinBoxFixture, SpinBoxMousePressAndMoveRightScrollsValue)
     {
         m_doubleSpinBox->setValue(10.0);

Code/Framework/GridMate/Platform/Android/GridMate/Session/LANSession_Android.cpp

@@ -7,6 +7,7 @@
  */
 
 #include <unistd.h>
+#include <AzCore/std/string/string.h>
 
 namespace GridMate
 {

Code/Framework/GridMate/Platform/iOS/GridMate/Session/LANSession_iOS.cpp

@@ -7,6 +7,7 @@
  */
 
 #include <unistd.h>
+#include <AzCore/std/string/string.h>
 
 namespace GridMate
 {