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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_OFFLINE_PAGES_CORE_BACKGROUND_SCHEDULER_H_
#define COMPONENTS_OFFLINE_PAGES_CORE_BACKGROUND_SCHEDULER_H_
#include <stdint.h>
#include "components/offline_pages/core/background/device_conditions.h"
namespace offline_pages {
// Interface of a class responsible for scheduling a task to initiate
// processing of background offlining requests upon select system conditions
// (such as having a network connection).
class Scheduler {
public:
// Defines a set of system conditions to trigger background processing.
struct TriggerConditions {
TriggerConditions(bool power, int battery, bool unmetered)
: require_power_connected(power),
minimum_battery_percentage(battery),
require_unmetered_network(unmetered) {}
bool require_power_connected;
int minimum_battery_percentage;
bool require_unmetered_network;
};
Scheduler() = default;
virtual ~Scheduler() = default;
// Schedules the triggering of a task subject to |trigger_conditions|.
// This may overwrite any previous scheduled task with a new one for
// these conditions. That is, only one set of triggering conditions
// is scheduled at a time.
virtual void Schedule(const TriggerConditions& trigger_conditions) = 0;
// Schedules the triggering of a task in case Chromium is killed,
// so we can continue processing background download requests. This will
// not overwrite existing tasks.
virtual void BackupSchedule(const TriggerConditions& trigger_conditions,
int64_t delay_in_seconds) = 0;
// Unschedules the currently scheduled task, if any.
virtual void Unschedule() = 0;
// Get the current device conditions from the android APIs.
virtual const DeviceConditions& GetCurrentDeviceConditions() = 0;
};
} // namespace offline_pages
#endif // COMPONENTS_OFFLINE_PAGES_CORE_BACKGROUND_SCHEDULER_H_
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