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// Copyright (c) 2011 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.
#ifndef CHROME_BROWSER_UPGRADE_DETECTOR_IMPL_H_
#define CHROME_BROWSER_UPGRADE_DETECTOR_IMPL_H_
#include <utility>
#include <vector>
#include "base/callback.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "base/timer/timer.h"
#include "base/version.h"
#include "build/build_config.h"
#include "chrome/browser/upgrade_detector.h"
#include "components/variations/service/variations_service.h"
namespace base {
template <typename T>
class NoDestructor;
class SequencedTaskRunner;
class TaskRunner;
class TickClock;
}
// This class contains the non-CrOS desktop implementation of the detector.
class UpgradeDetectorImpl : public UpgradeDetector,
public variations::VariationsService::Observer {
public:
~UpgradeDetectorImpl() override;
// Returns the currently installed Chrome version, which may be newer than the
// one currently running. Not supported on Android, iOS or ChromeOS. Must be
// run on a thread where I/O operations are allowed.
static base::Version GetCurrentlyInstalledVersion();
// Returns the global instance.
static UpgradeDetectorImpl* GetInstance();
// UpgradeDetector:
base::TimeDelta GetHighAnnoyanceLevelDelta() override;
base::TimeTicks GetHighAnnoyanceDeadline() override;
protected:
explicit UpgradeDetectorImpl(const base::TickClock* tick_clock);
// Sends out a notification and starts a one shot timer to wait until
// notifying the user.
void UpgradeDetected(UpgradeAvailable upgrade_available);
// variations::VariationsService::Observer:
void OnExperimentChangesDetected(Severity severity) override;
// Trigger an "on upgrade" notification based on the specified |time_passed|
// interval. Exposed as protected for testing.
void NotifyOnUpgradeWithTimePassed(base::TimeDelta time_passed);
base::TimeDelta GetThresholdForLevel(UpgradeNotificationAnnoyanceLevel level);
private:
friend class base::NoDestructor<UpgradeDetectorImpl>;
// A callback that receives the results of |DetectUpgradeTask|.
using UpgradeDetectedCallback = base::OnceCallback<void(UpgradeAvailable)>;
using DeltaAndStage =
std::pair<base::TimeDelta, UpgradeNotificationAnnoyanceLevel>;
using Stages = std::vector<DeltaAndStage>;
// UpgradeDetector:
void OnRelaunchNotificationPeriodPrefChanged() override;
#if defined(OS_WIN) && defined(GOOGLE_CHROME_BUILD)
// Receives the results of AreAutoupdatesEnabled and starts the upgrade check
// timer.
void OnAutoupdatesEnabledResult(bool auto_updates_enabled);
#endif
// Start the timer that will call |CheckForUpgrade()|.
void StartTimerForUpgradeCheck();
// Launches a background task to check if we have the latest version.
void CheckForUpgrade();
// Starts the upgrade notification timer that will check periodically whether
// enough time has elapsed to update the severity (which maps to visual
// badging) of the notification.
void StartUpgradeNotificationTimer();
// Lazy-initialization for the various threshold deltas (idempotent).
void InitializeThresholds();
void DoInitializeThresholds();
// Returns true after calling UpgradeDetected if current install is outdated.
bool DetectOutdatedInstall();
// The function that sends out a notification (after a certain time has
// elapsed) that lets the rest of the UI know we should start notifying the
// user that a new version is available.
void NotifyOnUpgrade();
// Determines whether or not an update is available, posting |callback| with
// the result to |callback_task_runner| if so.
static void DetectUpgradeTask(
scoped_refptr<base::TaskRunner> callback_task_runner,
UpgradeDetectedCallback callback);
SEQUENCE_CHECKER(sequence_checker_);
// A sequenced task runner on which blocking tasks run.
scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
// We periodically check to see if Chrome has been upgraded.
base::RepeatingTimer detect_upgrade_timer_;
// A timer used to move through the various upgrade notification stages and
// schedule calls to NotifyUpgrade.
base::OneShotTimer upgrade_notification_timer_;
// True if this build is a dev or canary channel build.
bool is_unstable_channel_;
// True if auto update is turned on.
bool is_auto_update_enabled_;
// True if test switches that simulate an outdated install are present on the
// command line.
const bool simulating_outdated_;
// True if test switches are present on the command line.
const bool is_testing_;
// The various deltas from detection time to the different annoyance levels;
// lazy-initialized by InitializeThresholds.
base::TimeDelta high_threshold_;
base::TimeDelta elevated_threshold_;
Stages stages_;
// The date the binaries were built.
base::Time build_date_;
// We use this factory to create callback tasks for UpgradeDetected. We pass
// the task to the actual upgrade detection code, which is in
// DetectUpgradeTask.
base::WeakPtrFactory<UpgradeDetectorImpl> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(UpgradeDetectorImpl);
};
#endif // CHROME_BROWSER_UPGRADE_DETECTOR_IMPL_H_