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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/ScreenOrientationBinding.h"
#include "mozilla/HalScreenConfiguration.h"
class nsScreen;
namespace mozilla {
namespace dom {
class Promise;
typedef uint32_t ScreenOrientationInternal;
static const ScreenOrientationInternal eScreenOrientation_None = 0;
static const ScreenOrientationInternal eScreenOrientation_PortraitPrimary = 1u << 0;
static const ScreenOrientationInternal eScreenOrientation_PortraitSecondary = 1u << 1;
static const ScreenOrientationInternal eScreenOrientation_LandscapePrimary = 1u << 2;
static const ScreenOrientationInternal eScreenOrientation_LandscapeSecondary = 1u << 3;
//eScreenOrientation_Default will use the natural orientation for the deivce,
//it could be PortraitPrimary or LandscapePrimary depends on display resolution
static const ScreenOrientationInternal eScreenOrientation_Default = 1u << 4;
class ScreenOrientation final : public DOMEventTargetHelper,
public mozilla::hal::ScreenConfigurationObserver
{
// nsScreen has deprecated API that shares implementation.
friend class ::nsScreen;
public:
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ScreenOrientation, mozilla::DOMEventTargetHelper)
NS_REALLY_FORWARD_NSIDOMEVENTTARGET(mozilla::DOMEventTargetHelper)
IMPL_EVENT_HANDLER(change)
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() const;
uint16_t DeviceAngle() const;
// GetType and GetAngle gets the type and angle of the responsible document
// (as defined in specification).
OrientationType GetType(ErrorResult& aRv) const;
uint16_t GetAngle(ErrorResult& aRv) const;
virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
void Notify(const mozilla::hal::ScreenConfiguration& aConfiguration) override;
static void UpdateActiveOrientationLock(ScreenOrientationInternal aOrientation);
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.
bool LockDeviceOrientation(ScreenOrientationInternal aOrientation,
bool aIsFullscreen, ErrorResult& aRv);
// This method calls in to the HAL to unlock the device and removes
// full screen change listener.
void UnlockDeviceOrientation();
// This method performs the same function as |Lock| except it takes
// a ScreenOrientationInternal argument instead of an OrientationType.
// This method exists in order to share implementation with nsScreen that
// uses ScreenOrientationInternal.
already_AddRefed<Promise> LockInternal(ScreenOrientationInternal aOrientation,
ErrorResult& aRv);
void DispatchChangeEvent();
bool ShouldResistFingerprinting() const;
LockPermission GetLockOrientationPermission(bool aCheckSandbox) const;
// Gets the responsible document as defined in the spec.
nsIDocument* GetResponsibleDocument() const;
RefPtr<nsScreen> mScreen;
RefPtr<FullScreenEventListener> mFullScreenListener;
RefPtr<VisibleEventListener> mVisibleListener;
OrientationType mType;
uint16_t mAngle;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_ScreenOrientation_h
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