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// Copyright 2014 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_EXTENSIONS_FILE_MANAGER_DEVICE_EVENT_ROUTER_H_
#define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_DEVICE_EVENT_ROUTER_H_
#include <map>
#include <string>
#include "base/memory/weak_ptr.h"
#include "base/threading/thread_checker.h"
#include "chrome/browser/chromeos/file_manager/volume_manager_observer.h"
#include "chrome/common/extensions/api/file_manager_private.h"
#include "chromeos/dbus/power_manager_client.h"
namespace file_manager {
enum DeviceState {
// Device is not being hard unplugged.
DEVICE_STATE_USUAL,
// Device is hard unplugged.
DEVICE_HARD_UNPLUGGED,
// Device is hard unplugged and reported to the JavaScript side.
DEVICE_HARD_UNPLUGGED_AND_REPORTED
};
// Event router for device events.
class DeviceEventRouter : public VolumeManagerObserver,
public chromeos::PowerManagerClient::Observer {
public:
DeviceEventRouter();
// |overriding_time_delta| overrides time delta of delayed tasks for testing
// |so that the tasks are executed by RunLoop::RunUntilIdle.
explicit DeviceEventRouter(base::TimeDelta overriding_time_delta);
virtual ~DeviceEventRouter();
// Turns the startup flag on, and then turns it off after few seconds.
void Startup();
// VolumeManagerObserver overrides.
virtual void OnDiskAdded(const chromeos::disks::DiskMountManager::Disk& disk,
bool mounting) override;
virtual void OnDiskRemoved(
const chromeos::disks::DiskMountManager::Disk& disk) override;
virtual void OnDeviceAdded(const std::string& device_path) override;
virtual void OnDeviceRemoved(const std::string& device_path) override;
virtual void OnVolumeMounted(chromeos::MountError error_code,
const VolumeInfo& volume_info) override;
virtual void OnVolumeUnmounted(chromeos::MountError error_code,
const VolumeInfo& volume_info) override;
virtual void OnFormatStarted(const std::string& device_path,
bool success) override;
virtual void OnFormatCompleted(const std::string& device_path,
bool success) override;
// PowerManagerClient::Observer overrides.
virtual void SuspendImminent() override;
virtual void SuspendDone(const base::TimeDelta& sleep_duration) override;
bool is_resuming() const { return is_resuming_; }
bool is_starting_up() const { return is_starting_up_; }
protected:
// Handles a device event containing |type| and |device_path|.
virtual void OnDeviceEvent(
extensions::api::file_manager_private::DeviceEventType type,
const std::string& device_path) = 0;
// Returns external storage is disabled or not.
virtual bool IsExternalStorageDisabled() = 0;
private:
void StartupDelayed();
void OnDeviceAddedDelayed(const std::string& device_path);
void SuspendDoneDelayed();
// Obtains device state of the device having |device_path|.
DeviceState GetDeviceState(const std::string& device_path) const;
// Sets device state to the device having |device_path|.
void SetDeviceState(const std::string& device_path, DeviceState state);
// Whther to use zero time delta for testing or not.
const base::TimeDelta resume_time_delta_;
const base::TimeDelta startup_time_delta_;
// Whether the profile is starting up or not.
bool is_starting_up_;
// Whether the system is resuming or not.
bool is_resuming_;
// Map of device path and device state.
std::map<std::string, DeviceState> device_states_;
// Thread checker.
base::ThreadChecker thread_checker_;
// Last event time for UMA.
// TODO(hirono): Remove the temporarily UMA. crbug.com/433734
base::Time last_hard_unplugged_;
base::Time last_suspend_done_;
// Note: This should remain the last member so it'll be destroyed and
// invalidate the weak pointers before any other members are destroyed.
base::WeakPtrFactory<DeviceEventRouter> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(DeviceEventRouter);
};
} // namespace file_manager
#endif // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_DEVICE_EVENT_ROUTER_H_
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