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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/HalScreenConfiguration.h"
#include "mozilla/MozPromise.h"
#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/dom/ScreenOrientationBinding.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);
// Dispatch change event then resolve the promise.
// aBrowsingContext must be top level in process.
static void DispatchChangeEventToChildren(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();
// The common safety checks
static bool CommonSafetyChecks(nsPIDOMWindowInner* aOwner,
Document* aDocument, ErrorResult& aRv);
static LockPermission GetLockOrientationPermission(nsPIDOMWindowInner* aOwner,
Document* aDocument);
// 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
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