1 files changed, 82 insertions, 0 deletions
diff --git a/dom/base/PointerLockManager.h b/dom/base/PointerLockManager.h
new file mode 100644
index 0000000000..0b229bd429
--- /dev/null
+++ b/dom/base/PointerLockManager.h
@@ -0,0 +1,82 @@
+/* -*- 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/. */
+
+#ifndef mozilla_PointerLockManager_h
+#define mozilla_PointerLockManager_h
+
+#include "mozilla/AlreadyAddRefed.h"
+#include "nsIWeakReferenceUtils.h"
+#include "nsThreadUtils.h"
+
+namespace mozilla {
+enum class StyleCursorKind : uint8_t;
+
+namespace dom {
+class BrowsingContext;
+class BrowserParent;
+enum class CallerType : uint32_t;
+class Document;
+class Element;
+}  // namespace dom
+
+class PointerLockManager final {
+ public:
+  static void RequestLock(dom::Element* aElement, dom::CallerType aCallerType);
+
+  MOZ_CAN_RUN_SCRIPT_BOUNDARY
+  static void Unlock(dom::Document* aDoc = nullptr);
+
+  static bool IsLocked() { return sIsLocked; }
+
+  static already_AddRefed<dom::Element> GetLockedElement();
+
+  static already_AddRefed<dom::Document> GetLockedDocument();
+
+  static dom::BrowserParent* GetLockedRemoteTarget();
+
+  /**
+   * Returns true if aContext and the current pointer locked document
+   * have common top BrowsingContext.
+   * Note that this method returns true only if caller is in the same process
+   * as pointer locked document.
+   */
+  static bool IsInLockContext(mozilla::dom::BrowsingContext* aContext);
+
+  // Set/release pointer lock remote target. Should only be called in parent
+  // process.
+  static bool SetLockedRemoteTarget(dom::BrowserParent* aBrowserParent);
+  static void ReleaseLockedRemoteTarget(dom::BrowserParent* aBrowserParent);
+
+ private:
+  class PointerLockRequest final : public Runnable {
+   public:
+    PointerLockRequest(dom::Element* aElement, bool aUserInputOrChromeCaller);
+    MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHOD Run() final;
+
+   private:
+    nsWeakPtr mElement;
+    nsWeakPtr mDocument;
+    bool mUserInputOrChromeCaller;
+  };
+
+  static void ChangePointerLockedElement(dom::Element* aElement,
+                                         dom::Document* aDocument,
+                                         dom::Element* aPointerLockedElement);
+
+  MOZ_CAN_RUN_SCRIPT_BOUNDARY
+  static bool StartSetPointerLock(dom::Element* aElement,
+                                  dom::Document* aDocument);
+
+  MOZ_CAN_RUN_SCRIPT
+  static bool SetPointerLock(dom::Element* aElement, dom::Document* aDocument,
+                             StyleCursorKind);
+
+  static bool sIsLocked;
+};
+
+}  // namespace mozilla
+
+#endif  // mozilla_PointerLockManager_h