зеркало из https://github.com/mozilla/gecko-dev.git
77 строки
1.5 KiB
C++
77 строки
1.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* 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_dom_MutableFile_h
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#define mozilla_dom_MutableFile_h
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#include "nsCOMPtr.h"
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#include "nsString.h"
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class nsIFile;
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class nsIOfflineStorage;
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namespace mozilla {
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namespace dom {
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class FileService;
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/**
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* This class provides a base for MutableFile implementations.
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* The subclasses can override implementation of IsInvalid, CreateStream,
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* SetThreadLocals and UnsetThreadLocals.
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* (for example IDBMutableFile provides IndexedDB specific implementation).
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*/
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class MutableFileBase
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{
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friend class FileService;
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public:
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NS_IMETHOD_(MozExternalRefCountType)
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AddRef() = 0;
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NS_IMETHOD_(MozExternalRefCountType)
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Release() = 0;
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virtual bool
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IsInvalid()
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{
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return false;
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}
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// A temporary method that will be removed along with nsIOfflineStorage
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// interface.
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virtual nsIOfflineStorage*
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Storage() = 0;
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virtual already_AddRefed<nsISupports>
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CreateStream(bool aReadOnly);
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virtual void
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SetThreadLocals()
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{
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}
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virtual void
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UnsetThreadLocals()
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{
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}
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protected:
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MutableFileBase();
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virtual ~MutableFileBase();
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nsCOMPtr<nsIFile> mFile;
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nsCString mStorageId;
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nsString mFileName;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_MutableFile_h
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