1 files changed, 52 insertions, 0 deletions
diff --git a/dom/midi/MIDIPermissionRequest.h b/dom/midi/MIDIPermissionRequest.h
new file mode 100644
index 0000000000..935abf580a
--- /dev/null
+++ b/dom/midi/MIDIPermissionRequest.h
@@ -0,0 +1,52 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/. */
+
+#ifndef mozilla_dom_MIDIPermissionRequest_h
+#define mozilla_dom_MIDIPermissionRequest_h
+
+#include "mozilla/dom/Promise.h"
+#include "nsContentPermissionHelper.h"
+
+namespace mozilla::dom {
+
+struct MIDIOptions;
+
+/**
+ * Handles permission dialog management when requesting MIDI permissions.
+ */
+class MIDIPermissionRequest final : public ContentPermissionRequestBase,
+                                    public nsIRunnable {
+ public:
+  MIDIPermissionRequest(nsPIDOMWindowInner* aWindow, Promise* aPromise,
+                        const MIDIOptions& aOptions);
+
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_NSIRUNNABLE
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(MIDIPermissionRequest,
+                                           ContentPermissionRequestBase)
+  // nsIContentPermissionRequest
+  NS_IMETHOD Cancel(void) override;
+  NS_IMETHOD Allow(JS::Handle<JS::Value> choices) override;
+  NS_IMETHOD GetTypes(nsIArray** aTypes) override;
+
+ private:
+  ~MIDIPermissionRequest() = default;
+  nsresult DoPrompt();
+  void CancelWithRandomizedDelay();
+
+  // If we're canceling on a timer, we need to hold a strong ref while it's
+  // outstanding.
+  nsCOMPtr<nsITimer> mCancelTimer;
+
+  // Promise for returning MIDIAccess on request success
+  RefPtr<Promise> mPromise;
+  // True if sysex permissions should be requested
+  bool mNeedsSysex;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_MIDIPermissionRequest_h