gecko-dev/dom/file/File.h

114 строки
3.6 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_File_h
#define mozilla_dom_File_h
#include "mozilla/dom/Blob.h"
#include "mozilla/dom/Date.h"
class nsIFile;
namespace mozilla {
namespace dom {
struct ChromeFilePropertyBag;
struct FilePropertyBag;
class Promise;
class File final : public Blob
{
friend class Blob;
public:
// Note: BlobImpl must be a File in order to use this method.
// Check impl->IsFile().
static File*
Create(nsISupports* aParent, BlobImpl* aImpl);
static already_AddRefed<File>
Create(nsISupports* aParent, const nsAString& aName,
const nsAString& aContentType, uint64_t aLength,
int64_t aLastModifiedDate);
// The returned File takes ownership of aMemoryBuffer. aMemoryBuffer will be
// freed by free so it must be allocated by malloc or something
// compatible with it.
static already_AddRefed<File>
CreateMemoryFile(nsISupports* aParent, void* aMemoryBuffer, uint64_t aLength,
const nsAString& aName, const nsAString& aContentType,
int64_t aLastModifiedDate);
// This method creates a BlobFileImpl for the new File object. This is
// thread-safe, cross-process, cross-thread as any other BlobImpl, but, when
// GetType() is called, it must dispatch a runnable to the main-thread in
// order to use nsIMIMEService.
// Would be nice if we try to avoid to use this method outside the
// main-thread to avoid extra runnables.
static already_AddRefed<File>
CreateFromFile(nsISupports* aParent, nsIFile* aFile);
static already_AddRefed<File>
CreateFromFile(nsISupports* aParent, nsIFile* aFile, const nsAString& aName,
const nsAString& aContentType);
// WebIDL methods
virtual JSObject* WrapObject(JSContext *cx,
JS::Handle<JSObject*> aGivenProto) override;
// File constructor
static already_AddRefed<File>
Constructor(const GlobalObject& aGlobal,
const Sequence<BlobPart>& aData,
const nsAString& aName,
const FilePropertyBag& aBag,
ErrorResult& aRv);
// ChromeOnly
static already_AddRefed<Promise>
CreateFromFileName(const GlobalObject& aGlobal,
const nsAString& aFilePath,
const ChromeFilePropertyBag& aBag,
SystemCallerGuarantee aGuarantee,
ErrorResult& aRv);
// ChromeOnly
static already_AddRefed<Promise>
CreateFromNsIFile(const GlobalObject& aGlobal,
nsIFile* aFile,
const ChromeFilePropertyBag& aBag,
SystemCallerGuarantee aGuarantee,
ErrorResult& aRv);
void GetName(nsAString& aName) const;
int64_t GetLastModified(ErrorResult& aRv);
Date GetLastModifiedDate(ErrorResult& aRv);
void GetRelativePath(nsAString& aPath) const;
void GetMozFullPath(nsAString& aFilename, SystemCallerGuarantee aGuarantee,
ErrorResult& aRv) const;
void GetMozFullPathInternal(nsAString& aName, ErrorResult& aRv) const;
protected:
virtual bool HasFileInterface() const override { return true; }
private:
// File constructor should never be used directly. Use Blob::Create or
// File::Create.
File(nsISupports* aParent, BlobImpl* aImpl);
~File();
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_File_h