michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef nsStreamLoader_h__
michael@0: #define nsStreamLoader_h__
michael@0: 
michael@0: #include "nsIStreamLoader.h"
michael@0: #include "nsCOMPtr.h"
michael@0: #include "mozilla/Attributes.h"
michael@0: 
michael@0: class nsIRequest;
michael@0: 
michael@0: class nsStreamLoader MOZ_FINAL : public nsIStreamLoader
michael@0: {
michael@0: public:
michael@0:   NS_DECL_ISUPPORTS
michael@0:   NS_DECL_NSISTREAMLOADER
michael@0:   NS_DECL_NSIREQUESTOBSERVER
michael@0:   NS_DECL_NSISTREAMLISTENER
michael@0: 
michael@0:   nsStreamLoader();
michael@0:   ~nsStreamLoader();
michael@0: 
michael@0:   static nsresult
michael@0:   Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
michael@0: 
michael@0: protected:
michael@0:   static NS_METHOD WriteSegmentFun(nsIInputStream *, void *, const char *,
michael@0:                                    uint32_t, uint32_t, uint32_t *);
michael@0: 
michael@0:   // Utility method to free mData, if present, and update other state to
michael@0:   // reflect that no data has been allocated.
michael@0:   void ReleaseData();
michael@0: 
michael@0:   nsCOMPtr<nsIStreamLoaderObserver> mObserver;
michael@0:   nsCOMPtr<nsISupports>             mContext;  // the observer's context
michael@0:   nsCOMPtr<nsIRequest>              mRequest;
michael@0: 
michael@0:   uint8_t  *mData;      // buffer to accumulate incoming data
michael@0:   uint32_t  mAllocated; // allocated size of data buffer (we preallocate if
michael@0:                         //   contentSize is available)
michael@0:   uint32_t  mLength;    // actual length of data in buffer
michael@0:                         //   (must be <= mAllocated)
michael@0: };
michael@0: 
michael@0: #endif // nsStreamLoader_h__