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114 lines
4.1 KiB
C++
114 lines
4.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_ScreenOrientation_h
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#define mozilla_dom_ScreenOrientation_h
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#include "mozilla/DOMEventTargetHelper.h"
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#include "mozilla/dom/BindingDeclarations.h"
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#include "mozilla/dom/ScreenOrientationBinding.h"
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#include "mozilla/HalScreenConfiguration.h"
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#include "mozilla/MozPromise.h"
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class nsScreen;
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namespace mozilla::dom {
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class Promise;
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class ScreenOrientation final : public DOMEventTargetHelper {
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// nsScreen has deprecated API that shares implementation.
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friend class ::nsScreen;
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public:
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ScreenOrientation,
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mozilla::DOMEventTargetHelper)
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IMPL_EVENT_HANDLER(change)
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// Called when the orientation may have changed.
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void MaybeChanged();
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ScreenOrientation(nsPIDOMWindowInner* aWindow, nsScreen* aScreen);
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already_AddRefed<Promise> Lock(OrientationLockType aOrientation,
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ErrorResult& aRv);
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void Unlock(ErrorResult& aRv);
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// DeviceType and DeviceAngle gets the current type and angle of the device.
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OrientationType DeviceType(CallerType aCallerType) const;
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uint16_t DeviceAngle(CallerType aCallerType) const;
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// GetType and GetAngle gets the type and angle of the responsible document
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// (as defined in specification).
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OrientationType GetType(CallerType aCallerType, ErrorResult& aRv) const;
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uint16_t GetAngle(CallerType aCallerType, ErrorResult& aRv) const;
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JSObject* WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override;
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static void UpdateActiveOrientationLock(hal::ScreenOrientation aOrientation);
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static void AbortInProcessOrientationPromises(
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BrowsingContext* aBrowsingContext);
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private:
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virtual ~ScreenOrientation();
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// Listener to unlock orientation if we leave fullscreen.
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class FullscreenEventListener;
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// Listener to update document's orienation lock when document becomes
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// visible.
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class VisibleEventListener;
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// Task to run step to lock orientation as defined in specification.
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class LockOrientationTask;
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enum LockPermission { LOCK_DENIED, FULLSCREEN_LOCK_ALLOWED, LOCK_ALLOWED };
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// This method calls into the HAL to lock the device and sets
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// up listeners for full screen change.
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RefPtr<GenericNonExclusivePromise> LockDeviceOrientation(
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hal::ScreenOrientation aOrientation, bool aIsFullscreen);
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// This method calls in to the HAL to unlock the device and removes
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// full screen change listener.
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void UnlockDeviceOrientation();
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void CleanupFullscreenListener();
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// This method performs the same function as |Lock| except it takes
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// a hal::ScreenOrientation argument instead of an OrientationType.
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// This method exists in order to share implementation with nsScreen that
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// uses ScreenOrientation.
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already_AddRefed<Promise> LockInternal(hal::ScreenOrientation aOrientation,
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ErrorResult& aRv);
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nsCOMPtr<nsIRunnable> DispatchChangeEventAndResolvePromise();
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LockPermission GetLockOrientationPermission(bool aCheckSandbox) const;
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// Gets the responsible document as defined in the spec.
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Document* GetResponsibleDocument() const;
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RefPtr<nsScreen> mScreen;
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RefPtr<FullscreenEventListener> mFullscreenListener;
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RefPtr<VisibleEventListener> mVisibleListener;
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OrientationType mType;
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uint16_t mAngle;
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// Whether we've tried to call into hal to lock the device orientation. This
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// is needed because you don't want calling UnlockDeviceOrientation() during
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// shutdown to initialize PHal if it hasn't been initialized earlier. Also,
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// makes sense (there's no reason destroying a ScreenOrientation object from a
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// different window should remove the orientation lock).
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bool mTriedToLockDeviceOrientation = false;
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};
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} // namespace mozilla::dom
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#endif // mozilla_dom_ScreenOrientation_h
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