gecko-dev/dom/devicestorage/DeviceStorageStatics.h

108 строки
2.7 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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_dom_devicestorage_DeviceStorageStatics_h
#define mozilla_dom_devicestorage_DeviceStorageStatics_h
#include "mozilla/Mutex.h"
class nsDOMDeviceStorage;
class DeviceStorageFile;
#ifdef MOZ_WIDGET_GONK
class nsIVolume;
#endif
namespace mozilla {
namespace dom {
namespace devicestorage {
class DeviceStorageStatics final : public nsIObserver
{
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIOBSERVER
static void Initialize();
static void InitializeDirs();
static void AddListener(nsDOMDeviceStorage* aListener);
static void RemoveListener(nsDOMDeviceStorage* aListener);
static bool LowDiskSpace();
static bool IsPromptTesting();
static void GetWritableName(nsString& aName);
static void SetWritableName(const nsAString& aName);
static bool HasOverrideRootDir();
static already_AddRefed<nsIFile> GetAppsDir();
static already_AddRefed<nsIFile> GetCrashesDir();
static already_AddRefed<nsIFile> GetPicturesDir();
static already_AddRefed<nsIFile> GetVideosDir();
static already_AddRefed<nsIFile> GetMusicDir();
static already_AddRefed<nsIFile> GetSdcardDir();
private:
enum DeviceStorageType {
TYPE_APPS,
TYPE_CRASHES,
TYPE_PICTURES,
TYPE_VIDEOS,
TYPE_MUSIC,
TYPE_SDCARD,
TYPE_OVERRIDE,
TYPE_COUNT
};
static already_AddRefed<nsIFile> GetDir(DeviceStorageType aType);
DeviceStorageStatics();
virtual ~DeviceStorageStatics();
void Init();
void InitDirs();
void DumpDirs();
void Shutdown();
void Register();
void Deregister();
void ResetOverrideRootDir();
class ListenerWrapper final {
public:
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ListenerWrapper)
explicit ListenerWrapper(nsDOMDeviceStorage* aListener);
bool Equals(nsDOMDeviceStorage* aListener);
void OnFileWatcherUpdate(const nsCString& aData, DeviceStorageFile* aFile);
void OnDiskSpaceWatcher(bool aLowDiskSpace);
void OnWritableNameChanged();
#ifdef MOZ_WIDGET_GONK
void OnVolumeStateChanged(nsIVolume* aVolume);
#endif
private:
virtual ~ListenerWrapper();
nsWeakPtr mListener;
nsCOMPtr<nsIThread> mOwningThread;
};
nsTArray<RefPtr<ListenerWrapper> > mListeners;
nsCOMPtr<nsIFile> mDirs[TYPE_COUNT];
bool mInitialized;
bool mPromptTesting;
bool mLowDiskSpace;
nsString mWritableName;
static StaticRefPtr<DeviceStorageStatics> sInstance;
static StaticMutex sMutex;
};
} // namespace devicestorage
} // namespace dom
} // namespace mozilla
#endif