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b97c5dfc24
This changeset causes tranistory states when changing from mounted to shared, and back to mounted to be reported as shared instead of unavailable. We also don't send the same status twice in a row.
104 lines
3.7 KiB
C++
104 lines
3.7 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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bool IsSharing() const { return mIsSharing; }
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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 SetIsSharing(bool aIsSharing);
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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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bool mIsSharing;
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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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