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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"

/**
 * The nsIXULWindow
 *
 * When the window is destroyed, it will fire a "xul-window-destroyed"
 * notification through the global observer service.
 */

interface nsIDocShell;
interface nsIDocShellTreeItem;
interface nsIXULBrowserWindow;
interface nsITabParent;

[scriptable, uuid(a68a40b9-f7df-47ff-a874-2af3df7eb888)]
interface nsIXULWindow : nsISupports
{
  /**
   * The docshell owning the XUL for this window.
   */
  readonly attribute nsIDocShell docShell;

  /**
   * Indicates if this window is instrinsically sized.	
   */
  attribute boolean intrinsicallySized;

  /**
   * The primary content shell.  
   *
   * Note that this is a docshell tree item and therefore can not be assured of
   * what object it is. It could be an editor, a docshell, or a browser object.
   * Or down the road any other object that supports being a DocShellTreeItem
   * Query accordingly to determine the capabilities.
   */
  readonly attribute nsIDocShellTreeItem primaryContentShell;

  /**
   * The content shell specified by the supplied id.
   *
   * Note that this is a docshell tree item and therefore can not be assured of
   * what object it is.  It could be an editor, a docshell, or a browser object.
   * Or down the road any other object that supports being a DocShellTreeItem
   * Query accordingly to determine the capabilities.
   */
  nsIDocShellTreeItem getContentShellById(in wstring ID);

  /**
   * Tell this window that it has picked up a child XUL window
   * @param aChild the child window being added
   */
  void addChildWindow(in nsIXULWindow aChild);

  /**
   * Tell this window that it has lost a child XUL window
   * @param aChild the child window being removed
   */
  void removeChildWindow(in nsIXULWindow aChild);

  /**
   * Move the window to a centered position.
   * @param aRelative If not null, the window relative to which the window is
   *                  moved. See aScreen parameter for details.
   * @param aScreen   PR_TRUE to center the window relative to the screen
   *                  containing aRelative if aRelative is not null. If
   *                  aRelative is null then relative to the screen of the
   *                  opener window if it was initialized by passing it to
   *                  nsWebShellWindow::Initialize. Failing that relative to
   *                  the main screen.
   *                  PR_FALSE to center it relative to aRelative itself.
   * @param aAlert    PR_TRUE to move the window to an alert position,
   *                  generally centered horizontally and 1/3 down from the top.
   */
  void center(in nsIXULWindow aRelative, in boolean aScreen, in boolean aAlert);

  /**
   * Shows the window as a modal window. That is, ensures that it is visible
   * and runs a local event loop, exiting only once the window has been closed.
   */
  void showModal();

  const unsigned long lowestZ = 0;
  const unsigned long loweredZ = 4;  /* "alwaysLowered" attribute */
  const unsigned long normalZ = 5;
  const unsigned long raisedZ = 6;   /* "alwaysRaised" attribute */
  const unsigned long highestZ = 9;

  attribute unsigned long zLevel;

  /**
   * contextFlags are from nsIWindowCreator2
   */
  attribute uint32_t contextFlags;

  attribute uint32_t chromeFlags;

  /**
   * Begin assuming |chromeFlags| don't change hereafter, and assert
   * if they do change.  The state change is one-way and idempotent.
   */
  void assumeChromeFlagsAreFrozen();

  /**
   * Create a new window.
   * @param aChromeFlags see nsIWebBrowserChrome
   * @param aOpeningTab the TabParent that requested this new window be opened.
   *                    Can be left null.
   * @return the newly minted window
   */
  nsIXULWindow createNewWindow(in int32_t aChromeFlags,
                               in nsITabParent aOpeningTab);

  attribute nsIXULBrowserWindow XULBrowserWindow;

  /**
   * Back-door method to force application of chrome flags at a particular
   * time.  Do NOT call this unless you know what you're doing!  In particular,
   * calling this when this XUL window doesn't yet have a document in its
   * docshell could cause problems.
   */
  [noscript] void applyChromeFlags();
};