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/* -*- 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_FileSystemBase_h
#define mozilla_dom_FileSystemBase_h
#include "nsString.h"
#include "Directory.h"
namespace mozilla {
namespace dom {
class BlobImpl;
class FileSystemBase
{
public:
NS_INLINE_DECL_REFCOUNTING(FileSystemBase)
FileSystemBase();
virtual void
Shutdown();
// SerializeDOMPath the FileSystem to string.
virtual void
SerializeDOMPath(nsAString& aOutput) const = 0;
virtual already_AddRefed<FileSystemBase>
Clone() = 0;
virtual bool
ShouldCreateDirectory() = 0;
virtual nsISupports*
GetParentObject() const;
virtual void
GetDirectoryName(nsIFile* aFile, nsAString& aRetval,
ErrorResult& aRv) const;
void
GetDOMPath(nsIFile* aFile, nsAString& aRetval, ErrorResult& aRv) const;
/*
* Return the local root path of the FileSystem implementation.
* For OSFileSystem, this is equal to the path of the root Directory;
* For DeviceStorageFileSystem, this is the path of the SDCard, parent
* directory of the exposed root Directory (per type).
*/
const nsAString&
LocalRootPath() const
{
return mLocalRootPath;
}
bool
IsShutdown() const
{
return mShutdown;
}
virtual bool
IsSafeFile(nsIFile* aFile) const;
virtual bool
IsSafeDirectory(Directory* aDir) const;
bool
GetRealPath(BlobImpl* aFile, nsIFile** aPath) const;
// IPC initialization
// See how these 2 methods are used in FileSystemTaskChildBase.
virtual bool
NeedToGoToMainThread() const { return false; }
virtual nsresult
MainThreadWork() { return NS_ERROR_FAILURE; }
virtual bool
ClonableToDifferentThreadOrProcess() const { return false; }
// CC methods
virtual void Unlink() {}
virtual void Traverse(nsCycleCollectionTraversalCallback &cb) {}
void
AssertIsOnOwningThread() const;
protected:
virtual ~FileSystemBase();
// The local path of the root (i.e. the OS path, with OS path separators, of
// the OS directory that acts as the root of this OSFileSystem).
// This path must be set by the FileSystem implementation immediately
// because it will be used for the validation of any FileSystemTaskChildBase.
// The concept of this path is that, any task will never go out of it and this
// must be considered the OS 'root' of the current FileSystem. Different
// Directory object can have different OS 'root' path.
// To be more clear, any path managed by this FileSystem implementation must
// be discendant of this local root path.
nsString mLocalRootPath;
bool mShutdown;
#ifdef DEBUG
PRThread* mOwningThread;
#endif
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_FileSystemBase_h
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