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101 lines
3.5 KiB
C++
101 lines
3.5 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_system_volume_h__
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#define mozilla_system_volume_h__
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#include "VolumeCommand.h"
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#include "nsIVolume.h"
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#include "nsString.h"
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#include "mozilla/Observer.h"
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#include "mozilla/RefPtr.h"
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#include "nsWhitespaceTokenizer.h"
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namespace mozilla {
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namespace system {
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/***************************************************************************
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*
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* There is an instance of the Volume class for each volume reported
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* from vold.
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*
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* Each volume originates from the /system/etv/vold.fstab file.
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*
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***************************************************************************/
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class Volume : public RefCounted<Volume>
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{
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public:
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Volume(const nsCSubstring& aVolumeName);
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typedef long STATE; // States are now defined in nsIVolume.idl
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static const char* StateStr(STATE aState) { return NS_VolumeStateStr(aState); }
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const char* StateStr() const { return StateStr(mState); }
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STATE State() const { return mState; }
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const nsCString& Name() const { return mName; }
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const char* NameStr() const { return mName.get(); }
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// The mount point is the name of the directory where the volume is mounted.
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// (i.e. path that leads to the files stored on the volume).
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const nsCString& MountPoint() const { return mMountPoint; }
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int32_t MountGeneration() const { return mMountGeneration; }
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bool IsMountLocked() const { return mMountLocked; }
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bool MediaPresent() const { return mMediaPresent; }
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bool CanBeShared() const { return mCanBeShared; }
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bool IsSharingEnabled() const { return mCanBeShared && mSharingEnabled; }
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void SetSharingEnabled(bool aSharingEnabled);
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typedef mozilla::Observer<Volume *> EventObserver;
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typedef mozilla::ObserverList<Volume *> EventObserverList;
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// NOTE: that observers must live in the IOThread.
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static void RegisterObserver(EventObserver* aObserver);
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static void UnregisterObserver(EventObserver* aObserver);
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private:
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friend class AutoMounter; // Calls StartXxx
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friend class nsVolume; // Calls UpdateMountLock
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friend class VolumeManager; // Calls HandleVoldResponse
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friend class VolumeListCallback; // Calls SetMountPoint, SetState
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// The StartXxx functions will queue up a command to the VolumeManager.
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// You can queue up as many commands as you like, and aCallback will
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// be called as each one completes.
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void StartMount(VolumeResponseCallback* aCallback);
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void StartUnmount(VolumeResponseCallback* aCallback);
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void StartShare(VolumeResponseCallback* aCallback);
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void StartUnshare(VolumeResponseCallback* aCallback);
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void SetState(STATE aNewState);
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void SetMediaPresent(bool aMediaPresent);
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void SetMountPoint(const nsCSubstring& aMountPoint);
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void StartCommand(VolumeCommand* aCommand);
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void HandleVoldResponse(int aResponseCode, nsCWhitespaceTokenizer& aTokenizer);
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static void UpdateMountLock(const nsACString& aVolumeName,
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const int32_t& aMountGeneration,
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const bool& aMountLocked);
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bool mMediaPresent;
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STATE mState;
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const nsCString mName;
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nsCString mMountPoint;
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int32_t mMountGeneration;
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bool mMountLocked;
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bool mSharingEnabled;
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bool mCanBeShared;
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static EventObserverList mEventObserverList;
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};
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} // system
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} // mozilla
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#endif // mozilla_system_volumemanager_h__
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