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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_BaseBlobImpl_h
#define mozilla_dom_BaseBlobImpl_h
#include "mozilla/dom/BlobImpl.h"
#include "mozilla/ErrorResult.h"
namespace mozilla {
namespace dom {
class FileBlobImpl;
class BaseBlobImpl : public BlobImpl {
friend class FileBlobImpl;
public:
// File constructor.
BaseBlobImpl(const nsAString& aName, const nsAString& aContentType,
uint64_t aLength, int64_t aLastModifiedDate)
: mIsFile(true),
mContentType(aContentType),
mName(aName),
mStart(0),
mLength(aLength),
mSerialNumber(NextSerialNumber()),
mLastModificationDate(aLastModifiedDate) {
// Ensure non-null mContentType by default
mContentType.SetIsVoid(false);
}
// Blob constructor without starting point.
BaseBlobImpl(const nsAString& aContentType, uint64_t aLength)
: mIsFile(false),
mContentType(aContentType),
mStart(0),
mLength(aLength),
mSerialNumber(NextSerialNumber()),
mLastModificationDate(0) {
// Ensure non-null mContentType by default
mContentType.SetIsVoid(false);
}
// Blob constructor with starting point.
BaseBlobImpl(const nsAString& aContentType, uint64_t aStart, uint64_t aLength)
: mIsFile(false),
mContentType(aContentType),
mStart(aStart),
mLength(aLength),
mSerialNumber(NextSerialNumber()),
mLastModificationDate(0) {
// Ensure non-null mContentType by default
mContentType.SetIsVoid(false);
}
virtual void GetName(nsAString& aName) const override;
virtual void GetDOMPath(nsAString& aName) const override;
virtual void SetDOMPath(const nsAString& aName) override;
virtual int64_t GetLastModified(ErrorResult& aRv) override;
virtual void GetMozFullPath(nsAString& aName,
SystemCallerGuarantee /* unused */,
ErrorResult& aRv) override;
virtual void GetMozFullPathInternal(nsAString& aFileName,
ErrorResult& aRv) override;
virtual uint64_t GetSize(ErrorResult& aRv) override { return mLength; }
virtual void GetType(nsAString& aType) override;
size_t GetAllocationSize() const override { return 0; }
size_t GetAllocationSize(
FallibleTArray<BlobImpl*>& aVisitedBlobImpls) const override {
return GetAllocationSize();
}
virtual uint64_t GetSerialNumber() const override { return mSerialNumber; }
virtual already_AddRefed<BlobImpl> CreateSlice(uint64_t aStart,
uint64_t aLength,
const nsAString& aContentType,
ErrorResult& aRv) override {
return nullptr;
}
virtual const nsTArray<RefPtr<BlobImpl>>* GetSubBlobImpls() const override {
return nullptr;
}
virtual void CreateInputStream(nsIInputStream** aStream,
ErrorResult& aRv) override {
aRv.Throw(NS_ERROR_NOT_IMPLEMENTED);
}
virtual int64_t GetFileId() override;
virtual void SetLazyData(const nsAString& aName,
const nsAString& aContentType, uint64_t aLength,
int64_t aLastModifiedDate) override {
mName = aName;
mContentType = aContentType;
mLength = aLength;
SetLastModificationDatePrecisely(aLastModifiedDate);
mIsFile = !aName.IsVoid();
}
virtual bool IsMemoryFile() const override { return false; }
virtual bool IsFile() const override { return mIsFile; }
virtual void GetBlobImplType(nsAString& aBlobImplType) const override {
aBlobImplType = u"BaseBlobImpl"_ns;
}
protected:
virtual ~BaseBlobImpl() = default;
/**
* Returns a new, effectively-unique serial number. This should be used
* by implementations to obtain a serial number for GetSerialNumber().
* The implementation is thread safe.
*/
static uint64_t NextSerialNumber();
void SetLastModificationDate(bool aCrossOriginIsolated, int64_t aDate);
void SetLastModificationDatePrecisely(int64_t aDate);
#ifdef DEBUG
bool IsLastModificationDateUnset() const {
return mLastModificationDate == INT64_MAX;
}
#endif
const nsString mBlobImplType;
bool mIsFile;
nsString mContentType;
nsString mName;
nsString mPath; // The path relative to a directory chosen by the user
uint64_t mStart;
uint64_t mLength;
const uint64_t mSerialNumber;
private:
int64_t mLastModificationDate;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_BaseBlobImpl_h
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