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// Copyright (c) 2009 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_CHROMEOS_CROS_UPDATE_LIBRARY_H_
#define CHROME_BROWSER_CHROMEOS_CROS_UPDATE_LIBRARY_H_
#pragma once
#include <string>
#include "base/observer_list.h"
#include "base/singleton.h"
#include "base/time.h"
#include "cros/chromeos_update_engine.h"
namespace chromeos {
// This interface defines interaction with the ChromeOS update library APIs.
// Classes can add themselves as observers. Users can get an instance of this
// library class like this: chromeos::CrosLibrary::Get()->GetUpdateLibrary()
class UpdateLibrary {
public:
// TODO(seanparent): Should make the UpdateProgress type copyable.
// We need to copy it to bind it for a deferred notification.
// Modifying the cros library just for that, for a single use case,
// isn't worth it. Instead we define this a local Status struct that
// is copyable.
struct Status {
Status()
: status(UPDATE_STATUS_IDLE),
download_progress(0.0),
last_checked_time(0),
new_size(0) {
}
explicit Status(const UpdateProgress& x) :
status(x.status_),
download_progress(x.download_progress_),
last_checked_time(x.last_checked_time_),
new_version(x.new_version_),
new_size(x.new_size_) {
}
UpdateStatusOperation status;
double download_progress; // 0.0 - 1.0
int64_t last_checked_time; // As reported by std::time().
std::string new_version;
int64_t new_size; // Valid during DOWNLOADING, in bytes.
};
class Observer {
public:
virtual ~Observer() { }
virtual void UpdateStatusChanged(UpdateLibrary* library) = 0;
};
// static UpdateLibrary* GetStubImplementation();
virtual ~UpdateLibrary() {}
virtual void AddObserver(Observer* observer) = 0;
virtual void RemoveObserver(Observer* observer) = 0;
// Initiates update check and returns true if check was initiated.
virtual bool CheckForUpdate() = 0;
// Reboots if update has been performed.
virtual bool RebootAfterUpdate() = 0;
// Sets the release track (channel). |track| should look like
// "beta-channel" and "dev-channel". Returns true on success.
virtual bool SetReleaseTrack(const std::string& track) = 0;
// Returns the release track (channel). On error, returns an empty
// string.
virtual std::string GetReleaseTrack() = 0;
virtual const Status& status() const = 0;
// Factory function, creates a new instance and returns ownership.
// For normal usage, access the singleton via CrosLibrary::Get().
static UpdateLibrary* GetImpl(bool stub);
};
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_CROS_UPDATE_LIBRARY_H_
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