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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
#ifndef mozilla_dom_FileBlobImpl_h
#define mozilla_dom_FileBlobImpl_h
#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/dom/BlobImpl.h"
#include "mozilla/Maybe.h"
#include "mozilla/Mutex.h"
#include "nsCOMPtr.h"
class nsIFile;
namespace mozilla::dom {
class FileBlobImpl : public BlobImpl {
public:
NS_INLINE_DECL_REFCOUNTING_INHERITED(FileBlobImpl, BlobImpl)
// Create as a file
explicit FileBlobImpl(nsIFile* aFile);
// Create as a file
FileBlobImpl(const nsAString& aName, const nsAString& aContentType,
uint64_t aLength, nsIFile* aFile);
FileBlobImpl(const nsAString& aName, const nsAString& aContentType,
uint64_t aLength, nsIFile* aFile, int64_t aLastModificationDate);
// Create as a file with custom name
FileBlobImpl(nsIFile* aFile, const nsAString& aName,
const nsAString& aContentType);
void GetName(nsAString& aName) const override {
MOZ_ASSERT(mIsFile, "Should only be called on files");
aName = mName;
}
void SetName(const nsAString& aName) { mName = aName; }
void GetDOMPath(nsAString& aPath) const override {
MOZ_ASSERT(mIsFile, "Should only be called on files");
aPath = mPath;
}
void SetDOMPath(const nsAString& aPath) override {
MOZ_ASSERT(mIsFile, "Should only be called on files");
mPath = aPath;
}
int64_t GetLastModified(ErrorResult& aRv) override;
void GetMozFullPath(nsAString& aFileName, SystemCallerGuarantee /* unused */,
ErrorResult& aRv) override {
MOZ_ASSERT(mIsFile, "Should only be called on files");
GetMozFullPathInternal(aFileName, aRv);
}
void GetMozFullPathInternal(nsAString& aFilename, ErrorResult& aRv) override;
uint64_t GetSize(ErrorResult& aRv) override;
void GetType(nsAString& aType) override;
void GetBlobImplType(nsAString& aBlobImplType) const override;
size_t GetAllocationSize() const override { return 0; }
size_t GetAllocationSize(
FallibleTArray<BlobImpl*>& aVisitedBlobImpls) const override {
return GetAllocationSize();
}
uint64_t GetSerialNumber() const override { return mSerialNumber; }
const nsTArray<RefPtr<BlobImpl>>* GetSubBlobImpls() const override {
return nullptr;
}
void CreateInputStream(nsIInputStream** aStream,
ErrorResult& aRv) const override;
int64_t GetFileId() const override { return mFileId; }
void SetLazyData(const nsAString& aName, const nsAString& aContentType,
uint64_t aLength, int64_t aLastModifiedDate) override {
mName = aName;
mContentType = aContentType;
mIsFile = !aName.IsVoid();
mLength.emplace(aLength);
mLastModified.emplace(aLastModifiedDate);
}
bool IsMemoryFile() const override { return false; }
bool IsFile() const override { return mIsFile; }
bool IsDirectory() const override;
void SetType(const nsAString& aType) { mContentType = aType; }
void SetFileId(int64_t aFileId) { mFileId = aFileId; }
void SetEmptySize() { mLength.emplace(0); }
void SetMozFullPath(const nsAString& aPath) { mMozFullPath = aPath; }
void SetLastModified(int64_t aLastModified) {
mLastModified.emplace(aLastModified);
}
protected:
~FileBlobImpl() override = default;
// Create slice
FileBlobImpl(const FileBlobImpl* aOther, uint64_t aStart, uint64_t aLength,
const nsAString& aContentType);
already_AddRefed<BlobImpl> CreateSlice(uint64_t aStart, uint64_t aLength,
const nsAString& aContentType,
ErrorResult& aRv) const override;
class GetTypeRunnable;
void GetTypeInternal(nsAString& aType, const MutexAutoLock& aProofOfLock);
// FileBlobImpl has getter methods with lazy initialization. Because any
// BlobImpl must work thread-safe, we use a mutex.
Mutex mMutex MOZ_UNANNOTATED;
nsCOMPtr<nsIFile> mFile;
nsString mContentType;
nsString mName;
nsString mPath; // The path relative to a directory chosen by the user
nsString mMozFullPath;
const uint64_t mSerialNumber;
uint64_t mStart;
int64_t mFileId;
Maybe<uint64_t> mLength;
Maybe<int64_t> mLastModified;
bool mIsFile;
bool mWholeFile;
};
} // namespace mozilla::dom
#endif // mozilla_dom_FileBlobImpl_h