gecko-dev/dom/devicestorage/nsDeviceStorage.h

238 lines
6.9 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 nsDeviceStorage_h
#define nsDeviceStorage_h
class nsPIDOMWindow;
#include "mozilla/Attributes.h"
#include "mozilla/dom/devicestorage/DeviceStorageRequestChild.h"
#include "DOMRequest.h"
#include "DOMCursor.h"
#include "nsAutoPtr.h"
#include "nsCycleCollectionParticipant.h"
#include "nsDOMClassInfoID.h"
#include "nsIClassInfo.h"
#include "nsIContentPermissionPrompt.h"
#include "nsIDOMWindow.h"
#include "nsIURI.h"
#include "nsInterfaceHashtable.h"
#include "nsIPrincipal.h"
#include "nsString.h"
#include "nsWeakPtr.h"
#include "nsIDOMEventListener.h"
#include "nsIObserver.h"
#include "nsIStringBundle.h"
#include "mozilla/Mutex.h"
#include "prtime.h"
#include "DeviceStorage.h"
#include "mozilla/StaticPtr.h"
namespace mozilla {
class ErrorResult;
} // namespace mozilla
#define POST_ERROR_EVENT_FILE_EXISTS "NoModificationAllowedError"
#define POST_ERROR_EVENT_FILE_DOES_NOT_EXIST "NotFoundError"
#define POST_ERROR_EVENT_FILE_NOT_ENUMERABLE "TypeMismatchError"
#define POST_ERROR_EVENT_PERMISSION_DENIED "SecurityError"
#define POST_ERROR_EVENT_ILLEGAL_TYPE "TypeMismatchError"
#define POST_ERROR_EVENT_UNKNOWN "Unknown"
enum DeviceStorageRequestType {
DEVICE_STORAGE_REQUEST_READ,
DEVICE_STORAGE_REQUEST_WRITE,
DEVICE_STORAGE_REQUEST_APPEND,
DEVICE_STORAGE_REQUEST_CREATE,
DEVICE_STORAGE_REQUEST_DELETE,
DEVICE_STORAGE_REQUEST_WATCH,
DEVICE_STORAGE_REQUEST_FREE_SPACE,
DEVICE_STORAGE_REQUEST_USED_SPACE,
DEVICE_STORAGE_REQUEST_AVAILABLE,
DEVICE_STORAGE_REQUEST_STATUS,
DEVICE_STORAGE_REQUEST_FORMAT,
DEVICE_STORAGE_REQUEST_MOUNT,
DEVICE_STORAGE_REQUEST_UNMOUNT,
DEVICE_STORAGE_REQUEST_CREATEFD
};
class DeviceStorageUsedSpaceCache MOZ_FINAL
{
public:
static DeviceStorageUsedSpaceCache* CreateOrGet();
DeviceStorageUsedSpaceCache();
~DeviceStorageUsedSpaceCache();
class InvalidateRunnable MOZ_FINAL : public nsRunnable
{
public:
InvalidateRunnable(DeviceStorageUsedSpaceCache* aCache,
const nsAString& aStorageName)
: mCache(aCache)
, mStorageName(aStorageName) {}
~InvalidateRunnable() {}
NS_IMETHOD Run() MOZ_OVERRIDE
{
nsRefPtr<DeviceStorageUsedSpaceCache::CacheEntry> cacheEntry;
cacheEntry = mCache->GetCacheEntry(mStorageName);
if (cacheEntry) {
cacheEntry->mDirty = true;
}
return NS_OK;
}
private:
DeviceStorageUsedSpaceCache* mCache;
nsString mStorageName;
};
void Invalidate(const nsAString& aStorageName)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mIOThread);
nsRefPtr<InvalidateRunnable> r = new InvalidateRunnable(this, aStorageName);
mIOThread->Dispatch(r, NS_DISPATCH_NORMAL);
}
void Dispatch(nsIRunnable* aRunnable)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mIOThread);
mIOThread->Dispatch(aRunnable, NS_DISPATCH_NORMAL);
}
nsresult AccumUsedSizes(const nsAString& aStorageName,
uint64_t* aPictureSize, uint64_t* aVideosSize,
uint64_t* aMusicSize, uint64_t* aTotalSize);
void SetUsedSizes(const nsAString& aStorageName,
uint64_t aPictureSize, uint64_t aVideosSize,
uint64_t aMusicSize, uint64_t aTotalSize);
private:
friend class InvalidateRunnable;
struct CacheEntry
{
// Technically, this doesn't need to be threadsafe, but the implementation
// of the non-thread safe one causes ASSERTS due to the underlying thread
// associated with a LazyIdleThread changing from time to time.
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CacheEntry)
bool mDirty;
nsString mStorageName;
int64_t mFreeBytes;
uint64_t mPicturesUsedSize;
uint64_t mVideosUsedSize;
uint64_t mMusicUsedSize;
uint64_t mTotalUsedSize;
private:
~CacheEntry() {}
};
already_AddRefed<CacheEntry> GetCacheEntry(const nsAString& aStorageName);
nsTArray<nsRefPtr<CacheEntry>> mCacheEntries;
nsCOMPtr<nsIThread> mIOThread;
static mozilla::StaticAutoPtr<DeviceStorageUsedSpaceCache> sDeviceStorageUsedSpaceCache;
};
class DeviceStorageTypeChecker MOZ_FINAL
{
public:
static DeviceStorageTypeChecker* CreateOrGet();
DeviceStorageTypeChecker();
~DeviceStorageTypeChecker();
void InitFromBundle(nsIStringBundle* aBundle);
bool Check(const nsAString& aType, nsIDOMBlob* aBlob);
bool Check(const nsAString& aType, nsIFile* aFile);
bool Check(const nsAString& aType, const nsString& aPath);
void GetTypeFromFile(nsIFile* aFile, nsAString& aType);
void GetTypeFromFileName(const nsAString& aFileName, nsAString& aType);
static nsresult GetPermissionForType(const nsAString& aType, nsACString& aPermissionResult);
static nsresult GetAccessForRequest(const DeviceStorageRequestType aRequestType, nsACString& aAccessResult);
static bool IsVolumeBased(const nsAString& aType);
static bool IsSharedMediaRoot(const nsAString& aType);
private:
nsString mPicturesExtensions;
nsString mVideosExtensions;
nsString mMusicExtensions;
static mozilla::StaticAutoPtr<DeviceStorageTypeChecker> sDeviceStorageTypeChecker;
};
class ContinueCursorEvent MOZ_FINAL : public nsRunnable
{
public:
explicit ContinueCursorEvent(already_AddRefed<mozilla::dom::DOMRequest> aRequest);
explicit ContinueCursorEvent(mozilla::dom::DOMRequest* aRequest);
~ContinueCursorEvent();
void Continue();
NS_IMETHOD Run() MOZ_OVERRIDE;
private:
already_AddRefed<DeviceStorageFile> GetNextFile();
nsRefPtr<mozilla::dom::DOMRequest> mRequest;
};
class nsDOMDeviceStorageCursor MOZ_FINAL
: public mozilla::dom::DOMCursor
, public nsIContentPermissionRequest
, public mozilla::dom::devicestorage::DeviceStorageRequestChildCallback
{
public:
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_NSICONTENTPERMISSIONREQUEST
NS_FORWARD_NSIDOMDOMCURSOR(mozilla::dom::DOMCursor::)
// DOMCursor
virtual void Continue(mozilla::ErrorResult& aRv) MOZ_OVERRIDE;
nsDOMDeviceStorageCursor(nsPIDOMWindow* aWindow,
nsIPrincipal* aPrincipal,
DeviceStorageFile* aFile,
PRTime aSince);
nsTArray<nsRefPtr<DeviceStorageFile> > mFiles;
bool mOkToCallContinue;
PRTime mSince;
void GetStorageType(nsAString & aType);
void RequestComplete() MOZ_OVERRIDE;
private:
~nsDOMDeviceStorageCursor();
nsRefPtr<DeviceStorageFile> mFile;
nsCOMPtr<nsIPrincipal> mPrincipal;
};
//helpers
bool
StringToJsval(nsPIDOMWindow* aWindow, nsAString& aString,
JS::MutableHandle<JS::Value> result);
JS::Value
nsIFileToJsval(nsPIDOMWindow* aWindow, DeviceStorageFile* aFile);
JS::Value
InterfaceToJsval(nsPIDOMWindow* aWindow, nsISupports* aObject, const nsIID* aIID);
#endif