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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_MOUNT_LIBRARY_H_
#define CHROME_BROWSER_CHROMEOS_MOUNT_LIBRARY_H_
#include <string>
#include <vector>
#include "base/observer_list.h"
#include "base/singleton.h"
#include "base/time.h"
#include "third_party/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)
: device_path(devicepath),
mount_path(mountpath) {}
std::string device_path;
std::string mount_path;
};
typedef std::vector<Disk> DiskVector;
class Observer {
public:
virtual void MountChanged(MountLibrary* obj,
MountEventType evt,
const std::string& path) = 0;
};
// This gets the singleton MountLibrary
static MountLibrary* Get();
// Returns true if the ChromeOS library was loaded.
static bool loaded();
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
const DiskVector& disks() const { return disks_; }
private:
friend struct DefaultSingletonTraits<MountLibrary>;
void ParseDisks(const MountStatus& status);
MountLibrary();
~MountLibrary();
// 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(MountLibrary);
};
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_MOUNT_LIBRARY_H_
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