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40 lines
1.7 KiB
Plaintext
40 lines
1.7 KiB
Plaintext
/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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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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#include "nsISupports.idl"
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interface nsIStreamListener;
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[scriptable, uuid(4ad136fa-83af-4a22-a76e-503642c0f4a8)]
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interface nsIResumableChannel : nsISupports {
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/**
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* Prepare this channel for resuming. The request will not start until
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* asyncOpen or open is called. Calling resumeAt after open or asyncOpen
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* has been called has undefined behaviour.
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*
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* @param startPos the starting offset, in bytes, to use to download
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* @param entityID information about the file, to match before obtaining
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* the file. Pass an empty string to use anything.
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*
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* During OnStartRequest, this channel will have a status of
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* NS_ERROR_NOT_RESUMABLE if the file cannot be resumed, eg because the
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* server doesn't support this. This error may occur even if startPos
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* is 0, so that the front end can warn the user.
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* Similarly, the status of this channel during OnStartRequest may be
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* NS_ERROR_ENTITY_CHANGED, which indicates that the entity has changed,
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* as indicated by a changed entityID.
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* In both of these cases, no OnDataAvailable will be called, and
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* OnStopRequest will immediately follow with the same status code.
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*/
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void resumeAt(in unsigned long long startPos,
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in ACString entityID);
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/**
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* The entity id for this URI. Available after OnStartRequest.
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* @throw NS_ERROR_NOT_RESUMABLE if this load is not resumable.
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*/
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readonly attribute ACString entityID;
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};
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