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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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/. */
#include "nsISupports.idl"
interface nsIFrameLoader;
interface nsIPartialSHistory;
/**
* nsIGroupedSHistory represent a combined session history across multiple
* root docshells (usually browser tabs). The participating nsISHistory can
* either be in chrome process or in content process, but nsIGroupedSHistory
* itself lives in chrome process. The communication is proxyed through
* nsIPartialSHistory.
*/
[scriptable, builtinclass, uuid(813e498d-73a8-449a-be09-6187e62c5352)]
interface nsIGroupedSHistory : nsISupports
{
// The total number of entries of all its partial session histories.
[infallible] readonly attribute unsigned long count;
/**
* Remove all partial histories after currently active one (if any) and then
* append the given partial session history to the end of the list.
*/
void appendPartialSessionHistory(in nsIPartialSHistory aPartialHistory);
/**
* Notify the grouped session history that the active partial session history
* has been modified. All partial session histories after the active one
* will be removed and destroy.
*/
void onPartialSessionHistoryChange(in nsIPartialSHistory aPartialHistory);
/**
* Find the proper partial session history and navigate to the entry
* corresponding to the given global index. Note it doesn't swap frameloaders,
* but rather return the target loader for the caller to swap.
*
* @param aGlobalIndex The global index to navigate to.
* @param aTargetLoaderToSwap The owner frameloader of the to-be-navigate
* partial session history.
*/
void gotoIndex(in unsigned long aGlobalIndex, out nsIFrameLoader aTargetLoaderToSwap);
};
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