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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_PROVIDER_H_
#define CONTENT_BROWSER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_PROVIDER_H_
#include <optional>
#include "base/functional/callback.h"
#include "content/common/content_export.h"
#include "content/public/browser/render_frame_host_receiver_set.h"
#include "content/public/browser/web_contents_observer.h"
#include "services/device/public/mojom/screen_orientation.mojom.h"
#include "services/device/public/mojom/screen_orientation_lock_types.mojom.h"
#include "ui/display/mojom/screen_orientation.mojom.h"
namespace content {
class ScreenOrientationDelegate;
class WebContents;
// Handles screen orientation lock/unlock. Platforms which wish to provide
// custom implementations can provide a factory for ScreenOrientationDelegate.
class CONTENT_EXPORT ScreenOrientationProvider
: public device::mojom::ScreenOrientation,
public WebContentsObserver {
public:
ScreenOrientationProvider(WebContents* web_contents);
ScreenOrientationProvider(const ScreenOrientationProvider&) = delete;
ScreenOrientationProvider& operator=(const ScreenOrientationProvider&) =
delete;
~ScreenOrientationProvider() override;
void BindScreenOrientation(
RenderFrameHost* rfh,
mojo::PendingAssociatedReceiver<device::mojom::ScreenOrientation>
receiver);
// Return if orientation lock is enabled. This does not guarantee that any
// particular call to `Lock` will succeed, but lack of support here does mean
// that `Lock` will definitely won't work.
bool IsOrientationLockSupported() const;
// device::mojom::ScreenOrientation:
void LockOrientation(device::mojom::ScreenOrientationLockType,
LockOrientationCallback callback) override;
void UnlockOrientation() override;
// Inform about a screen orientation update. It is called to let the provider
// know if a lock has been resolved.
void OnOrientationChange();
// Provide a delegate which creates delegates for platform implementations.
// The delegate is not owned by ScreenOrientationProvider.
static void SetDelegate(ScreenOrientationDelegate* delegate);
static ScreenOrientationDelegate* GetDelegateForTesting();
static bool LockMatchesOrientation(
device::mojom::ScreenOrientationLockType lock,
display::mojom::ScreenOrientation orientation);
// WebContentsObserver
void DidToggleFullscreenModeForTab(bool entered_fullscreen,
bool will_cause_resize) override;
void PrimaryPageChanged(Page& page) override;
private:
// Calls on |on_result_callback_| with |result|, followed by resetting
// |on_result_callback_| and |pending_lock_orientation_|.
void NotifyLockResult(device::mojom::ScreenOrientationLockResult result);
// Returns the lock type that should be associated with 'natural' lock.
// Returns device::mojom::ScreenOrientationLockType if the natural lock type
// can't be found.
device::mojom::ScreenOrientationLockType GetNaturalLockType() const;
// Whether the passed |lock| matches the current orientation. In other words,
// whether the orientation will need to change to match the |lock|.
bool LockMatchesCurrentOrientation(
device::mojom::ScreenOrientationLockType lock);
// Not owned, responsible for platform implementations.
static ScreenOrientationDelegate* delegate_;
// Whether the ScreenOrientationProvider currently has a lock applied.
bool lock_applied_;
// Lock that require orientation changes are not completed until
// OnOrientationChange.
std::optional<device::mojom::ScreenOrientationLockType>
pending_lock_orientation_;
LockOrientationCallback pending_callback_;
RenderFrameHostReceiverSet<device::mojom::ScreenOrientation> receivers_;
};
} // namespace content
#endif // CONTENT_BROWSER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_PROVIDER_H_
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