1 files changed, 91 insertions, 0 deletions
diff --git a/toolkit/components/glean/bindings/private/Event.cpp b/toolkit/components/glean/bindings/private/Event.cpp
new file mode 100644
index 0000000000..7bbe7a865b
--- /dev/null
+++ b/toolkit/components/glean/bindings/private/Event.cpp
@@ -0,0 +1,91 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/glean/bindings/Event.h"
+
+#include "Common.h"
+#include "nsString.h"
+#include "mozilla/Components.h"
+#include "nsIClassInfoImpl.h"
+#include "jsapi.h"
+#include "nsIScriptError.h"
+
+namespace mozilla::glean {
+
+NS_IMPL_CLASSINFO(GleanEvent, nullptr, 0, {0})
+NS_IMPL_ISUPPORTS_CI(GleanEvent, nsIGleanEvent)
+
+NS_IMETHODIMP
+GleanEvent::Record(JS::HandleValue aExtra, JSContext* aCx) {
+  if (aExtra.isNullOrUndefined()) {
+    mEvent.Record();
+    return NS_OK;
+  }
+
+  if (!aExtra.isObject()) {
+    LogToBrowserConsole(nsIScriptError::warningFlag,
+                        u"Extras need to be an object"_ns);
+    return NS_OK;
+  }
+
+  nsTArray<nsCString> extraKeys;
+  nsTArray<nsCString> extraValues;
+
+  JS::RootedObject obj(aCx, &aExtra.toObject());
+  JS::Rooted<JS::IdVector> ids(aCx, JS::IdVector(aCx));
+  if (!JS_Enumerate(aCx, obj, &ids)) {
+    LogToBrowserConsole(nsIScriptError::warningFlag,
+                        u"Failed to enumerate object."_ns);
+    return NS_OK;
+  }
+
+  for (size_t i = 0, n = ids.length(); i < n; i++) {
+    nsAutoJSCString jsKey;
+    if (!jsKey.init(aCx, ids[i])) {
+      LogToBrowserConsole(
+          nsIScriptError::warningFlag,
+          u"Extra dictionary should only contain string keys."_ns);
+      return NS_OK;
+    }
+
+    JS::Rooted<JS::Value> value(aCx);
+    if (!JS_GetPropertyById(aCx, obj, ids[i], &value)) {
+      LogToBrowserConsole(nsIScriptError::warningFlag,
+                          u"Failed to get extra property."_ns);
+      return NS_OK;
+    }
+
+    nsAutoJSCString jsValue;
+    if (!value.isString() || !jsValue.init(aCx, value)) {
+      LogToBrowserConsole(nsIScriptError::warningFlag,
+                          u"Extra properties should have string values."_ns);
+      return NS_OK;
+    }
+
+    extraKeys.AppendElement(jsKey);
+    extraValues.AppendElement(jsValue);
+  }
+
+  // Calling the implementation directly, because we have a `string->string`
+  // map, not a `T->string` map the C++ API expects.
+  impl::fog_event_record_str(mEvent.mId, &extraKeys, &extraValues);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+GleanEvent::TestGetValue(const nsACString& aStorageName, JSContext* aCx,
+                         JS::MutableHandleValue aResult) {
+  auto result = mEvent.TestGetValue(aStorageName);
+  if (result.isNothing()) {
+    aResult.set(JS::UndefinedValue());
+    return NS_OK;
+  }
+
+  // TODO(bug 1678567): Implement this.
+  return NS_ERROR_FAILURE;
+}
+
+}  // namespace mozilla::glean