gecko-dev/docshell/shistory/nsIGroupedSHistory.idl

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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;
/**
* The currently active frameloader controlled by this nsIGroupedSHistory.
*/
readonly attribute nsIFrameLoader activeFrameLoader;
/**
* 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 appendPartialSHistory(in nsIPartialSHistory aPartialHistory);
/**
* Notify the grouped session history that the active partial session history
* has been modified.
*
* @param aPartialHistory The partial history which was updated
* @param aTruncate If this parameter is true, all partial session histories
* after this one will be removed.
*/
void handleSHistoryUpdate(in nsIPartialSHistory aPartialHistory, in boolean aTruncate);
/**
* 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.
*
* This function may throw NS_ERROR_NOT_AVAILABLE if the frameloader to swap
* to is dead.
*
* @param aGlobalIndex
* The global index to navigate to.
* @return The frameloader which needs to be swapped in, or null if no
* frameloader needs to be swapped.
*/
nsIFrameLoader gotoIndex(in unsigned long aGlobalIndex);
/**
* Close the FrameLoaderOwners of the inactive PartialSHistories in this GlobalSHistory.
* This does not remove the PartialSHistories from the GroupedSHistory.
*/
void closeInactiveFrameLoaderOwners();
/**
* Add a partialSHistory as a "prerendering" partialSHistory. This
* partialSHistory's tab will have its lifetime managed by the
* GroupedSHistory, and will be closed when closeInactiveFrameLoaderOwners is
* called, or whenever a SHistory update is received.
*/
void addPrerenderingPartialSHistory(in nsIPartialSHistory aPrerendering, in long aId);
/**
* Switch to the prerendering partialSHistory identified by aId, appending it after the current partialSHistory.
*/
[implicit_jscontext] nsISupports activatePrerendering(in long aId);
/**
* Cancel the prerendering with the given ID.
*/
void cancelPrerendering(in long aId);
};