/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * The contents of this file are subject to the Netscape Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License.  You may obtain a copy of the License at
 * http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See
 * the License for the specific language governing rights and limitations
 * under the License.
 *
 * The Original Code is Mozilla Communicator client code.
 *
 * The Initial Developer of the Original Code is Netscape Communications
 * Corporation.  Portions created by Netscape are Copyright (C) 1998
 * Netscape Communications Corporation.  All Rights Reserved.
 */

#include "nsISupports.idl"

%{C++
#include "nscore.h"
#include "nsCom.h"
%}

interface nsIWebShellWindow;
interface nsIURI;
interface nsIXULWindowCallbacks;
interface nsICmdLineService;

%{C++
/* Forward declarations... */
struct PRThread;
class nsIFactory;

#define NS_SIZETOCONTENT -1

// e5e5af70-8a38-11d2-9938-0080c7cb1080
#define NS_IAPPSHELL_SERVICE_IID \
{ 0xe5e5af70, 0x8a38, 0x11d2, \
	{0x99, 0x38, 0x00, 0x80, 0xc7, 0xcb, 0x10, 0x80} }
%}

[scriptable, uuid(E5E5AF70-8A38-11D2-9938-0080C7CB1080)]
interface nsIAppShellService : nsISupports
{

  /**
   * Required initialization routine.
   * @param aCmdLineService is stored and passed to appshell components as
   *                        they are initialized.
   */
  void Initialize(in nsICmdLineService aCmdLineService);

  /**
   * Runs an application event loop: normally the main event pump which
   * defines the lifetime of the application.
   */
  void Run();

  /**
   * Required exit routine.  Stops the event loop and cleanly shuts down
   * the appshell components.
   */
  void Shutdown();

  /**
   * Push a new event queue onto the stack of queues and begin processing
   * messages from it.
   */
  void PushThreadEventQueue();

  /**
   * Pop the last pushed event queue and stop processing messages from it.
   */
  void PopThreadEventQueue();

  /**
   * Create a window.
   * @param aParent the parent window.  Can be null.
   * @param aUrl the contents of the new window.
   * @param aShowWindow the window remains invisible if PR_FALSE.
   * @param aLoadDefaultPage controls whether the window should try to
   *                         load a default content page on its own.
   * @param aChromeMask chrome flags affecting the kind of OS border
   *                    given to the window. see nsIBrowserWindow for
   *                    bit/flag definitions.
   * @param aCallbacks interface providing C++ hooks for window initialization
   *                   before the window is made visible.  Can be null.
   *                   Deprecated.
   * @param aInitialWidth width, in pixels, of the window.  Width of window
   *                      at creation.  Can be overridden by the "width"
   *                      tag in the XUL.  Set to NS_SIZETOCONTENT to force
   *                      the window to wrap to its contents.
   * @param aInitialHeight like aInitialWidth, but subtly different.
   * @param aResult the newly created window is returned here.
   */
  void CreateTopLevelWindow(in nsIWebShellWindow aParent,
                            in nsIURI aUrl, 
                            in boolean aShowWindow, 
                            in boolean aLoadDefaultPage,
                            in PRUint32 aChromeMask,
                            in nsIXULWindowCallbacks aCallbacks,
                            in long aInitialWidth, in long aInitialHeight,
                            out nsIWebShellWindow aResult);

  /**
   * Run a window modally.
   * @param aWindow the window to run modally.  If null or pointing to null,
   *                a new window is created.  If aWindow != null, the window
   *                is returned from this method, but callers should use it
   *                carefully: it's been closed, and is therefore partially
   *                deconstructed.  Note that all other parameters are ignored
   *                if an already created window is passed in.
   * @param aParent the parent window.  Can be null.
   * @param aUrl the contents of the window.
   * @param aChromeMask chrome flags affecting the kind of OS border
   *                    given to the window. see nsIBrowserWindow for
   *                    bit/flag definitions.
   * @param aCallbacks interface providing C++ hooks for window initialization
   *                   before the window is made visible.  Deprecated.
   * @param aInitialWidth width, in pixels, of the window.  Width of window
   *                      at creation.  Can be overridden by the "width"
   *                      tag in the XUL.  Set to NS_SIZETOCONTENT to force
   *                      the window to wrap to its contents.
   * @param aInitialHeight like aInitialWidth.
   */
  void RunModalDialog(      inout nsIWebShellWindow aWindow,
                            in nsIWebShellWindow aParent, 
                            in nsIURI aUrl, 
                            in PRUint32 aChromeMask,
                            in nsIXULWindowCallbacks aCallbacks,
                            in long aInitialWidth, in long aInitialHeight);
                         
  // Apply Initialize function  to each app shell component.
  void EnumerateAndInitializeComponents();

  /**
   * Close a window.
   * @param aWindow a window.
   */
  void CloseTopLevelWindow(in nsIWebShellWindow aWindow);

  /**
   * Return the (singleton) application hidden window, automatically created
   * and maintained by this AppShellService.
   * @param aResult the hidden window.  Do not unhide hidden window.
   *                Do not taunt hidden window.
   */
  void GetHiddenWindow(out nsIWebShellWindow aResult);

  /**
   * Add a window to the application's registry of windows.  These windows
   * are generally shown in the Windows taskbar, and the application
   * knows it can't quit until it's out of registered windows.
   * @param aWindow yes
   */
  void RegisterTopLevelWindow(in nsIWebShellWindow aWindow);

  /**
   * Remove a window from the application's window registry.
   * @param aWindow you see the pattern
   */
  void UnregisterTopLevelWindow(in nsIWebShellWindow aWindow);
};