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/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * 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"
#include "nsIURI.idl"

interface nsIBrowser;
interface nsIRequest;
interface nsIInputStream;
interface nsIDocShell;
interface nsIFrameLoaderOwner;
interface nsITabParent;
interface nsIPrincipal;
interface mozIDOMWindowProxy;

webidl Element;
webidl Node;

/**
 * The nsIXULBrowserWindow supplies the methods that may be called from the
 * internals of the browser area to tell the containing xul window to update
 * its ui. 
 */
[scriptable, uuid(a8675fa9-c8b4-4350-9803-c38f344a9e38)]
interface nsIXULBrowserWindow : nsISupports
{
  /**
   * Tells the object implementing this function what link we are currently
   * over.
   */
  void setOverLink(in AString link, in Element element);

  /**
   * Determines the appropriate target for a link.
   */
  AString onBeforeLinkTraversal(in AString originalTarget,
                                in nsIURI linkURI,
                                in Node linkNode,
                                in boolean isAppTab);

  /**
   * Find the initial browser of the window and set its remote attributes.
   * This can be used to ensure that there is a browser in a new window of the
   * correct type when it first spawns.
   */
  void forceInitialBrowserNonRemote(in mozIDOMWindowProxy openerWindow);

  /**
   * Determines whether a load should continue.
   *
   * @param aDocShell
   *        The docshell performing the load.
   * @param aURI
   *        The URI being loaded.
   * @param aReferrer
   *        The referrer of the load.
   * @param aHasPostData
   *        True if the load which is being asked about has associated post data
   *        which would be discarded if the load was redirected across process
   *        boundaries.
   * @param aTriggeringPrincipal
   *        The principal that initiated the load of aURI.
   */
  bool shouldLoadURI(in nsIDocShell    aDocShell,
                     in nsIURI         aURI,
                     in nsIURI         aReferrer,
                     in boolean        aHasPostData,
                     in nsIPrincipal   aTriggeringPrincipal);
  /**
   * Show/hide a tooltip (when the user mouses over a link, say).
   */
  void showTooltip(in long x, in long y, in AString tooltip, in AString direction,
                   in nsIFrameLoaderOwner browser);
  void hideTooltip();

  /**
   * Return the number of tabs in this window.
   */
  uint32_t getTabCount();

  /**
   * Navigate the browser to the given history index after restoring the full history
   * from SessionStore. If the browser is currently in GroupedSHistory mode, it will
   * be reverted to a non-grouped history mode. If a process change is required to
   * perform the load, this will also occur.
   */
  void navigateAndRestoreByIndex(in nsIBrowser aBrowser, in long aIndex);

};