RetroZilla/docshell/base/nsIGlobalHistory3.idl

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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
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 * The Original Code is the Mozilla gecko engine.
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 * The Initial Developer of the Original Code is
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 * Portions created by the Initial Developer are Copyright (C) 2006
 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *   Brett Wilson <brettw@gmail.com>
 *
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 * either the GNU General Public License Version 2 or later (the "GPL"), or
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#include "nsISupports.idl"
#include "nsIGlobalHistory2.idl"
interface nsIChannel;

/**
 * Provides information about global history to gecko, extending GlobalHistory2
 */
[scriptable, uuid(24306852-c60e-49c3-a455-90f6747118ba)]
interface nsIGlobalHistory3 : nsIGlobalHistory2
{
  /**
   * Notifies the history system that the page loading via aOldChannel
   * redirected to aNewChannel. Implementations should generally add the URI for
   * aOldChannel to history for link coloring, but are advised not to expose it
   * in the history user interface. This function is preferred if
   * nsIGlobalHistory3 is available. Otherwise, nsIGlobalHistory2.addURI should
   * be called with redirect=true.
   *
   * This function is preferred to nsIGlobalHistory2.addURI because it provides
   * more information (including the redirect destination, channels involved,
   * and redirect flags) to the history implementation.
   *
   * For implementors of nsIGlobalHistory3: The history implementation is
   * responsible for sending NS_LINK_VISITED_EVENT_TOPIC to observers for
   * redirect pages. This notification must be sent for history consumers for
   * all non-redirect pages.
   *
   * @param aToplevel whether the URI is loaded in a top-level window.  If
   *        false, the load is in a subframe.
   *
   * The other params to this function are the same as those for
   * nsIChannelEventSink::OnChannelRedirect.
   *
   * Note: Implementors who wish to implement this interface but rely on
   * nsIGlobalHistory2.addURI for redirect processing may throw
   * NS_ERROR_NOT_IMPLEMENTED from this method.  If they do so, then callers
   * must call nsIGlobalHistory2.addURI upon getting the
   * NS_ERROR_NOT_IMPLEMENTED result.
   */
  void addDocumentRedirect(in nsIChannel aOldChannel,
                           in nsIChannel aNewChannel,
                           in PRInt32 aFlags,
                           in boolean aTopLevel);
};