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-rw-r--r--dom/base/ScreenOrientation.h113
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diff --git a/dom/base/ScreenOrientation.h b/dom/base/ScreenOrientation.h
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+/* -*- 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_dom_ScreenOrientation_h
+#define mozilla_dom_ScreenOrientation_h
+
+#include "mozilla/DOMEventTargetHelper.h"
+#include "mozilla/dom/BindingDeclarations.h"
+#include "mozilla/dom/ScreenOrientationBinding.h"
+#include "mozilla/HalScreenConfiguration.h"
+#include "mozilla/MozPromise.h"
+
+class nsScreen;
+
+namespace mozilla::dom {
+
+class Promise;
+
+class ScreenOrientation final : public DOMEventTargetHelper {
+ // nsScreen has deprecated API that shares implementation.
+ friend class ::nsScreen;
+
+ public:
+ NS_DECL_ISUPPORTS_INHERITED
+ NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ScreenOrientation,
+ mozilla::DOMEventTargetHelper)
+
+ IMPL_EVENT_HANDLER(change)
+
+ // Called when the orientation may have changed.
+ void MaybeChanged();
+
+ ScreenOrientation(nsPIDOMWindowInner* aWindow, nsScreen* aScreen);
+
+ already_AddRefed<Promise> Lock(OrientationLockType aOrientation,
+ ErrorResult& aRv);
+
+ void Unlock(ErrorResult& aRv);
+
+ // DeviceType and DeviceAngle gets the current type and angle of the device.
+ OrientationType DeviceType(CallerType aCallerType) const;
+ uint16_t DeviceAngle(CallerType aCallerType) const;
+
+ // GetType and GetAngle gets the type and angle of the responsible document
+ // (as defined in specification).
+ OrientationType GetType(CallerType aCallerType, ErrorResult& aRv) const;
+ uint16_t GetAngle(CallerType aCallerType, ErrorResult& aRv) const;
+
+ JSObject* WrapObject(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) override;
+
+ static void UpdateActiveOrientationLock(hal::ScreenOrientation aOrientation);
+ static void AbortInProcessOrientationPromises(
+ BrowsingContext* aBrowsingContext);
+
+ private:
+ virtual ~ScreenOrientation();
+
+ // Listener to unlock orientation if we leave fullscreen.
+ class FullscreenEventListener;
+
+ // Listener to update document's orienation lock when document becomes
+ // visible.
+ class VisibleEventListener;
+
+ // Task to run step to lock orientation as defined in specification.
+ class LockOrientationTask;
+
+ enum LockPermission { LOCK_DENIED, FULLSCREEN_LOCK_ALLOWED, LOCK_ALLOWED };
+
+ // This method calls into the HAL to lock the device and sets
+ // up listeners for full screen change.
+ RefPtr<GenericNonExclusivePromise> LockDeviceOrientation(
+ hal::ScreenOrientation aOrientation, bool aIsFullscreen);
+
+ // This method calls in to the HAL to unlock the device and removes
+ // full screen change listener.
+ void UnlockDeviceOrientation();
+ void CleanupFullscreenListener();
+
+ // This method performs the same function as |Lock| except it takes
+ // a hal::ScreenOrientation argument instead of an OrientationType.
+ // This method exists in order to share implementation with nsScreen that
+ // uses ScreenOrientation.
+ already_AddRefed<Promise> LockInternal(hal::ScreenOrientation aOrientation,
+ ErrorResult& aRv);
+
+ nsCOMPtr<nsIRunnable> DispatchChangeEventAndResolvePromise();
+
+ LockPermission GetLockOrientationPermission(bool aCheckSandbox) const;
+
+ // Gets the responsible document as defined in the spec.
+ Document* GetResponsibleDocument() const;
+
+ RefPtr<nsScreen> mScreen;
+ RefPtr<FullscreenEventListener> mFullscreenListener;
+ RefPtr<VisibleEventListener> mVisibleListener;
+ OrientationType mType;
+ uint16_t mAngle;
+ // Whether we've tried to call into hal to lock the device orientation. This
+ // is needed because you don't want calling UnlockDeviceOrientation() during
+ // shutdown to initialize PHal if it hasn't been initialized earlier. Also,
+ // makes sense (there's no reason destroying a ScreenOrientation object from a
+ // different window should remove the orientation lock).
+ bool mTriedToLockDeviceOrientation = false;
+};
+
+} // namespace mozilla::dom
+
+#endif // mozilla_dom_ScreenOrientation_h