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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_MOUNT_LIBRARY_H_
#define CHROME_BROWSER_CHROMEOS_CROS_MOUNT_LIBRARY_H_
#include <string>
#include <vector>
#include "base/observer_list.h"
#include "base/singleton.h"
#include "base/time.h"
#include "cros/chromeos_mount.h"
namespace chromeos {
// This class handles the interaction with the ChromeOS mount library APIs.
// Classes can add themselves as observers. Users can get an instance of this
// library class like this: MountLibrary::Get().
class MountLibrary {
public:
// Used to house an instance of each found mount device.
struct Disk {
Disk() {}
Disk(const std::string& devicepath,
const std::string& mountpath,
const std::string& systempath,
bool isparent,
bool hasmedia)
: device_path(devicepath),
mount_path(mountpath),
system_path(systempath),
is_parent(isparent),
has_media(hasmedia) {}
// The path of the device, used by devicekit-disks.
std::string device_path;
// The path to the mount point of this device. Will be empty if not mounted.
std::string mount_path;
// The path of the device according to the udev system.
std::string system_path;
// if the device is a parent device (i.e. sdb rather than sdb1)
bool is_parent;
// if the device has media currently
bool has_media;
};
typedef std::vector<Disk> DiskVector;
class Observer {
public:
virtual void MountChanged(MountLibrary* obj,
MountEventType evt,
const std::string& path) = 0;
};
virtual ~MountLibrary() {}
virtual void AddObserver(Observer* observer) = 0;
virtual void RemoveObserver(Observer* observer) = 0;
virtual const DiskVector& disks() const = 0;
virtual bool MountPath(const char* device_path) = 0;
};
// This class handles the interaction with the ChromeOS mount library APIs.
// Classes can add themselves as observers. Users can get an instance of this
// library class like this: MountLibrary::Get().
class MountLibraryImpl : public MountLibrary {
public:
MountLibraryImpl();
virtual ~MountLibraryImpl();
// MountLibrary overrides.
virtual void AddObserver(Observer* observer);
virtual void RemoveObserver(Observer* observer);
virtual const DiskVector& disks() const { return disks_; }
virtual bool MountPath(const char* device_path);
private:
void ParseDisks(const MountStatus& status);
// This method is called when there's a change in mount status.
// This method is called the UI Thread.
static void MountStatusChangedHandler(void* object,
const MountStatus& status,
MountEventType evt,
const char* path);
// This methods starts the monitoring of mount changes.
// It should be called on the UI Thread.
void Init();
// Called by the handler to update the mount status.
// This will notify all the Observers.
void UpdateMountStatus(const MountStatus& status,
MountEventType evt,
const std::string& path);
ObserverList<Observer> observers_;
// A reference to the mount api, to allow callbacks when the mount
// status changes.
MountStatusConnection mount_status_connection_;
// The list of disks found.
DiskVector disks_;
DISALLOW_COPY_AND_ASSIGN(MountLibraryImpl);
};
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_CROS_MOUNT_LIBRARY_H_
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