зеркало из https://github.com/mozilla/gecko-dev.git
125 строки
4.1 KiB
C++
125 строки
4.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_BlobImpl_h
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#define mozilla_dom_BlobImpl_h
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#include "mozilla/dom/BindingDeclarations.h"
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#include "mozilla/ErrorResult.h"
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#include "nsISupportsImpl.h"
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#include "nsString.h"
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#define BLOBIMPL_IID \
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{ \
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0xbccb3275, 0x6778, 0x4ac5, { \
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0xaf, 0x03, 0x90, 0xed, 0x37, 0xad, 0xdf, 0x5d \
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} \
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}
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class nsIInputStream;
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namespace mozilla {
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namespace dom {
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// This is the abstract class for any File backend. It must be nsISupports
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// because this class must be ref-counted and it has to work with IPC.
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class BlobImpl : public nsISupports {
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(BLOBIMPL_IID)
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NS_DECL_THREADSAFE_ISUPPORTS
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BlobImpl() {}
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virtual void GetName(nsAString& aName) const = 0;
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virtual void GetDOMPath(nsAString& aName) const = 0;
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virtual void SetDOMPath(const nsAString& aName) = 0;
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virtual int64_t GetLastModified(ErrorResult& aRv) = 0;
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virtual void SetLastModified(int64_t aLastModified) = 0;
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virtual void GetMozFullPath(nsAString& aName,
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SystemCallerGuarantee /* unused */,
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ErrorResult& aRv) = 0;
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virtual void GetMozFullPathInternal(nsAString& aFileName,
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ErrorResult& aRv) = 0;
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virtual uint64_t GetSize(ErrorResult& aRv) = 0;
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virtual void GetType(nsAString& aType) = 0;
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virtual void GetBlobImplType(nsAString& aBlobImplType) const = 0;
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virtual size_t GetAllocationSize() const = 0;
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virtual size_t GetAllocationSize(
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FallibleTArray<BlobImpl*>& aVisitedBlobImpls) const = 0;
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/**
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* An effectively-unique serial number identifying this instance of FileImpl.
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*
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* Implementations should obtain a serial number from
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* FileImplBase::NextSerialNumber().
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*/
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virtual uint64_t GetSerialNumber() const = 0;
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already_AddRefed<BlobImpl> Slice(const Optional<int64_t>& aStart,
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const Optional<int64_t>& aEnd,
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const nsAString& aContentType,
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ErrorResult& aRv);
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virtual already_AddRefed<BlobImpl> CreateSlice(uint64_t aStart,
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uint64_t aLength,
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const nsAString& aContentType,
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ErrorResult& aRv) = 0;
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virtual const nsTArray<RefPtr<BlobImpl>>* GetSubBlobImpls() const = 0;
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virtual void CreateInputStream(nsIInputStream** aStream,
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ErrorResult& aRv) = 0;
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virtual int64_t GetFileId() = 0;
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virtual nsresult GetSendInfo(nsIInputStream** aBody, uint64_t* aContentLength,
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nsACString& aContentType,
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nsACString& aCharset) = 0;
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virtual nsresult GetMutable(bool* aMutable) const = 0;
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virtual nsresult SetMutable(bool aMutable) = 0;
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virtual void SetLazyData(const nsAString& aName,
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const nsAString& aContentType, uint64_t aLength,
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int64_t aLastModifiedDate) = 0;
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virtual bool IsMemoryFile() const = 0;
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virtual bool IsSizeUnknown() const = 0;
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virtual bool IsDateUnknown() const = 0;
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virtual bool IsFile() const = 0;
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// Returns true if the BlobImpl is backed by an nsIFile and the underlying
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// file is a directory.
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virtual bool IsDirectory() const { return false; }
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// True if this implementation can be sent to other threads.
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virtual bool MayBeClonedToOtherThreads() const { return true; }
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protected:
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virtual ~BlobImpl() {}
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(BlobImpl, BLOBIMPL_IID)
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_BlobImpl_h
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