From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 19:32:43 +0200
Subject: Adding upstream version 1:115.7.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 dom/media/autoplay/GVAutoplayPermissionRequest.h | 86 ++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 dom/media/autoplay/GVAutoplayPermissionRequest.h

(limited to 'dom/media/autoplay/GVAutoplayPermissionRequest.h')

diff --git a/dom/media/autoplay/GVAutoplayPermissionRequest.h b/dom/media/autoplay/GVAutoplayPermissionRequest.h
new file mode 100644
index 0000000000..f432e365c0
--- /dev/null
+++ b/dom/media/autoplay/GVAutoplayPermissionRequest.h
@@ -0,0 +1,86 @@
+/* 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 DOM_MEDIA_GVAUTOPLAYPERMISSIONREQUEST_H_
+#define DOM_MEDIA_GVAUTOPLAYPERMISSIONREQUEST_H_
+
+#include "GVAutoplayRequestUtils.h"
+#include "nsContentPermissionHelper.h"
+
+class nsGlobalWindowInner;
+
+namespace mozilla::dom {
+
+/**
+ * This class is used to provide an ability for GeckoView (GV) to allow its
+ * embedder (application) to decide whether the autoplay media should be allowed
+ * or denied on the page. We have two types of request, one for audible media,
+ * another one for inaudible media. Each page would at most have one request per
+ * type at a time, and the result of request would be effective on that page
+ * until the page gets reloaded or closed.
+ */
+class GVAutoplayPermissionRequest : public ContentPermissionRequestBase {
+ public:
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(GVAutoplayPermissionRequest,
+                                           ContentPermissionRequestBase)
+
+  // nsIContentPermissionRequest methods
+  NS_IMETHOD Cancel(void) override;
+  NS_IMETHOD Allow(JS::Handle<JS::Value> choices) override;
+
+ private:
+  // Only allow to create this request from the requestor.
+  friend class GVAutoplayPermissionRequestor;
+  static void CreateRequest(nsGlobalWindowInner* aWindow,
+                            BrowsingContext* aContext,
+                            GVAutoplayRequestType aType);
+
+  GVAutoplayPermissionRequest(nsGlobalWindowInner* aWindow,
+                              BrowsingContext* aContext,
+                              GVAutoplayRequestType aType);
+  ~GVAutoplayPermissionRequest();
+
+  void SetRequestStatus(GVAutoplayRequestStatus aStatus);
+
+  GVAutoplayRequestType mType;
+  RefPtr<BrowsingContext> mContext;
+};
+
+/**
+ * This class provides a method to request autoplay permission for a page, which
+ * would be used to be a factor to determine if media is allowed to autoplay or
+ * not on GeckoView.
+ *
+ * A page could only have at most one audible request and one inaudible request,
+ * and once a page has been closed or reloaded, those requests would be dropped.
+ * In order to achieve that all media existing in the same page can share the
+ * result of those requests, the request status would only be stored in the
+ * top-level browsing context, which allows them to be synchronized among
+ * different processes when Fission is enabled.
+ *
+ * The current way we choose is to request for a permission when creating media
+ * element, in order to get the response from the embedding app before media
+ * starts playing if the app can response the request quickly enough. However,
+ * the request might be pending if the app doesn't response to it, we might
+ * never get the response. As that is just one factor of determining the
+ * autoplay result, even if we don't get the response for the request, we still
+ * have a chance to play media. Check AutoplayPolicy to see more details about
+ * how we decide the final autoplay decision.
+ */
+class GVAutoplayPermissionRequestor final {
+ public:
+  static void AskForPermissionIfNeeded(nsPIDOMWindowInner* aWindow);
+
+ private:
+  static bool HasEverAskForRequest(BrowsingContext* aContext,
+                                   GVAutoplayRequestType aType);
+  static void CreateAsyncRequest(nsPIDOMWindowInner* aWindow,
+                                 BrowsingContext* aContext,
+                                 GVAutoplayRequestType aType);
+};
+
+}  // namespace mozilla::dom
+
+#endif
-- 
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