gecko/dom/system/gonk/Volume.h

96 lines
2.9 KiB
C++

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_system_volume_h__
#define mozilla_system_volume_h__
#include "mozilla/RefPtr.h"
#include "nsString.h"
#include "VolumeCommand.h"
namespace mozilla {
namespace system {
/***************************************************************************
*
* There is an instance of the Volume class for each volume reported
* from vold.
*
* Each volume originates from the /system/etv/vold.fstab file.
*
***************************************************************************/
class Volume : public RefCounted<Volume>
{
public:
// These MUST match the states from android's system/vold/Volume.h header
enum STATE
{
STATE_INIT = -1,
STATE_NOMEDIA = 0,
STATE_IDLE = 1,
STATE_PENDING = 2,
STATE_CHECKING = 3,
STATE_MOUNTED = 4,
STATE_UNMOUNTING = 5,
STATE_FORMATTING = 6,
STATE_SHARED = 7,
STATE_SHAREDMNT = 8
};
Volume(const nsCSubstring &aVolumeName);
const char *StateStr(STATE aState) const
{
switch (aState) {
case STATE_INIT: return "Init";
case STATE_NOMEDIA: return "NoMedia";
case STATE_IDLE: return "Idle";
case STATE_PENDING: return "Pending";
case STATE_CHECKING: return "Checking";
case STATE_MOUNTED: return "Mounted";
case STATE_UNMOUNTING: return "Unmounting";
case STATE_FORMATTING: return "Formatting";
case STATE_SHARED: return "Shared";
case STATE_SHAREDMNT: return "Shared-Mounted";
}
return "???";
}
const char *StateStr() const { return StateStr(mState); }
STATE State() const { return mState; }
const nsCString &Name() const { return mName; }
const char *NameStr() const { return mName.get(); }
// The mount point is the name of the directory where the volume is mounted.
// (i.e. path that leads to the files stored on the volume).
const nsCString &MountPoint() const { return mMountPoint; }
// The StartXxx functions will queue up a command to the VolumeManager.
// You can queue up as many commands as you like, and aCallback will
// be called as each one completes.
void StartMount(VolumeResponseCallback *aCallback);
void StartUnmount(VolumeResponseCallback *aCallback);
void StartShare(VolumeResponseCallback *aCallback);
void StartUnshare(VolumeResponseCallback *aCallback);
private:
friend class VolumeManager; // Calls SetState
friend class VolumeListCallback; // Calls SetMountPoint, SetState
void SetState(STATE aNewState);
void SetMountPoint(const nsCSubstring &aMountPoint);
void StartCommand(VolumeCommand *aCommand);
STATE mState;
const nsCString mName;
nsCString mMountPoint;
};
} // system
} // mozilla
#endif // mozilla_system_volumemanager_h__