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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/ash_export.h"
#include "ash/tray_action/tray_action_observer.h"
#include "base/callback.h"
#include "base/macros.h"
#include "base/scoped_observer.h"
namespace ash {
class TrayAction;
// A helper class for requesting a lock screen app that provides a callback run
// when the action launch process finishes (both successfuly or with a failure).
class ASH_EXPORT LockScreenNoteLauncher : public TrayActionObserver {
using LaunchCallback = base::OnceCallback<void(bool success)>;
~LockScreenNoteLauncher() override;
// Whether the lock screen note state indicates that a note action launch can
// be requested - note that |Run| will not succeed if this returns false.
static bool CanAttemptLaunch();
// Requests a lock screen note launch, and starts observing lock screen note
// state changes - when the state changes to a non-launching state (either
// kActive - indicating launch success, or kAvailable or kNotAvailable -
// indicating launch failure), it runs |callback|.
// This can handle only one launch requests at a time - i.e. it should not be
// called again before |callback| is run.
// Returns whether the note launch was successfully requested. |callback| will
// not be called if the return value is false.
bool Run(mojom::LockScreenNoteOrigin action_origin, LaunchCallback callback);
// TrayActionObserver:
void OnLockScreenNoteStateChanged(mojom::TrayActionState state) override;
// Called when the launch attempt completes - resets the object state and runs
// the launch callback provided to |Run|.
void OnLaunchDone(bool success);
// The callback provided to |Run|.
LaunchCallback callback_;
ScopedObserver<TrayAction, TrayActionObserver> tray_action_observer_;
} // namespace ash