chore: import upstream snapshot with attribution

src/settings-ui/Settings.UI.Library/CustomAction/CustomActionDataModel.cs

@@ -0,0 +1,17 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Text.Json.Serialization;
+
+namespace Microsoft.PowerToys.Settings.UI.Library.CustomAction
+{
+    public class CustomActionDataModel
+    {
+        [JsonPropertyName("action_name")]
+        public string Name { get; set; }
+
+        [JsonPropertyName("value")]
+        public string Value { get; set; }
+    }
+}

src/settings-ui/Settings.UI.Library/CustomAction/CustomNamePolicy.cs

@@ -0,0 +1,24 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Text.Json;
+
+namespace Microsoft.PowerToys.Settings.UI.Library.CustomAction
+{
+    public class CustomNamePolicy : JsonNamingPolicy
+    {
+        private Func<string, string> convertDelegate;
+
+        public CustomNamePolicy(Func<string, string> convertDelegate)
+        {
+            this.convertDelegate = convertDelegate;
+        }
+
+        public override string ConvertName(string name)
+        {
+            return convertDelegate(name);
+        }
+    }
+}

src/settings-ui/Settings.UI.Library/CustomAction/ModuleCustomAction.cs

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+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace Microsoft.PowerToys.Settings.UI.Library.CustomAction
+{
+    public class ModuleCustomAction
+    {
+        public CustomActionDataModel ModuleAction { get; set; }
+    }
+}

src/settings-ui/Settings.UI.Library/CustomAction/SendCustomAction.cs

@@ -0,0 +1,43 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Collections.Concurrent;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Microsoft.PowerToys.Settings.UI.Library.CustomAction
+{
+    public class SendCustomAction
+    {
+        private static readonly ConcurrentDictionary<string, JsonSerializerOptions> OptionsCache = new ConcurrentDictionary<string, JsonSerializerOptions>();
+
+        private readonly string moduleName;
+
+        public SendCustomAction(string moduleName)
+        {
+            this.moduleName = moduleName;
+        }
+
+        [JsonPropertyName("action")]
+        public ModuleCustomAction Action { get; set; }
+
+        public string ToJsonString()
+        {
+            var jsonSerializerOptions = OptionsCache.GetOrAdd(moduleName, CreateOptionsForModuleName);
+            return JsonSerializer.Serialize(this, jsonSerializerOptions);
+        }
+
+        private JsonSerializerOptions CreateOptionsForModuleName(string moduleName)
+        {
+            return new JsonSerializerOptions
+            {
+                PropertyNamingPolicy = new CustomNamePolicy((propertyName) =>
+                {
+                    // Using Ordinal as this is an internal property name
+                    return propertyName.Equals("ModuleAction", System.StringComparison.Ordinal) ? moduleName : propertyName;
+                }),
+            };
+        }
+    }
+}