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193 lines
9.2 KiB
Plaintext
193 lines
9.2 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Bill Law <law@netscape.com>
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* Blake Ross <blake@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsISupports.idl"
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/* nsINativeAppSupport
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*
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* This "pseudo" (in the XPCOM sense) interface provides for
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* platform-specific general aplication support:
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* o It subsumes the old "NS_CanRun" and "NS_CreateSplashScreen"
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* functions that managed display of the application splash
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* screen at startup.
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* o It manages the details of the simple DDE communication
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* supported on the Win32 platform (it is the addition of this
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* item that prompted the creation of this interface.
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*
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* Due to the nature of the beast, this interface is not a full-blown
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* XPCOM component. The primary reason is that objects that implement
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* this interface generally must be operational *before* XPCOM (or any
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* of the rest of Mozilla) are initialized. As a result, this
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* interface is instantiated by somewhat unconventional means.
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*
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* To create the implementor of this interface, you call the function
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* NS_CreateNativeAppSupport. This is done in the startup code
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* in mozilla/xpfe/bootstrap.
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*
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* You can use this interface by obtaining an instance via the
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* "nativeAppSupport" attribute of the nsIAppShellService
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* interface/service.
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*
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* The interface provides these functions:
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* start - You call this to inform the native app support that the
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* application is starting. In addition, it serves as a
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* query as to whether the application should continue to
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* run. In that respect, it is rougly equivalent to the
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* NS_CanStart function, which it replaces.
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*
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* If the returned boolean result is PR_FALSE, then the
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* application should exit without further processing. In
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* such cases, the returned nsresult indicates whether the
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* reason to exit is due to an error or not.
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*
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* Win32 Note: In the case of starting a second instance
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* of this executable, this function will return
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* PR_FALSE and nsresult==NS_OK. This means that
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* the command line arguments have been
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* successfully passed to the instance of the
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* application acting as a DDE server.
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*
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* stop - You call this to inform the native app support that the
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* application *wishes* to terminate. If the returned boolean
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* value is PR_FALSE, then the application should continue
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* (as if there were still additional top-level windows open).
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*
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* Win32 Note: If this is the instance of the application
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* acting as the DDE server, and there are current
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* DDE conversations active with other instances
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* acting as DDE clients, then this function will
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* return PR_FALSE.
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*
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* quit - Like Stop, but this method *forces* termination (or more
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* precisely, indicates that the application is about to be
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* terminated regardless of what a call to Stop might have
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* returned.
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*
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* This method is intended to be called when the user selects
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* the "Quit" option (close all windows and exit).
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*
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* Win32 Note: Stop is problematic in the case of "Quit" (close
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* all windows and exit the application) because
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* either we don't Quit or (potentially) we lose
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* requests coming from other instances of the
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* application. The strategy is to give preference
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* to the user's explicit Quit request. In the
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* unlikely event that a request is pending from
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* another instance of the application, then such
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* requests are essentially ignored. This is
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* roughly equivalent to handling that request by
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* opening a new window, followed by immediately
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* closing it. Since this is the same as if the
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* request came in immediately before the Quit
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* call (versus immediately after it), no harm.
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*
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* There is an exposure here: Upon return from this
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* function, any DDE connect request (for Mozilla)
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* will fail and other instances of the application
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* will start up as a DDE server. In that case,
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* those instances may do things that conflict with
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* the subsequent shutting down of the instance that
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* is quitting. For this reason, the call to Quit
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* should be deferred as long as possible.
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*
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* showSplashScreen - Causes the platform-specific splash screen to be
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* displayed. This is a replacement for the old
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* method of invoking the Show() method on the
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* nsISplashScreen interface obtained by calling
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* NS_CreateSplashScreen.
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*
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* hideSplashScreen - Causes the splash screen to be removed (if it is
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* being shown). This replaces the old method of
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* invoking the Hide() method on the nsISplashScreen
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* interface maintained by the app shell service.
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*
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* startServerMode - Method that "starts" server mode. Typically, this
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* will create a hidden Navigator window (and then close
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* it) in order to fill the cache, load shared libraries,
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* etc. Note that this method does not set the
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* isServerMode attribute, nor does setting that attribute
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* "start" server mode (at least in the same sense as is
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* meant by this method). Basically, native code will
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* set isServerMode to tell nsAppRunner; nsAppRunner will
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* then call this method (implemented back in the same
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* native code) at the appropriate time for any additional
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* server-mode startup to be completed.
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*
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* onLastWindowClosing - Called when the last window is closed. Used as a
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* "soft" shutdown, passwords are flushed.
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*
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* This interface has these attributes:
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* isServerMode - Boolean attribute indicating whether the application
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* is running in "server mode." Server mode means the
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* application was started to pre-load shared-libraries,
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* initialize services, and open a hidden Navigator window
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* in order to quickly surface that window when the user
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* launches the application in the normal mode. This
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* mode is currently Win32-only (and may really only make
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* sense there) and is intended to be initiated from the
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* Windows startup folder at system initialization.
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*
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*
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*/
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interface nsIXULWindow;
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interface nsICmdLineService;
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[scriptable, uuid(5fdf8480-1f98-11d4-8077-00600811a9c3)]
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interface nsINativeAppSupport : nsISupports {
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// Startup/shutdown.
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boolean start();
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boolean stop();
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void quit();
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[noscript] void ensureProfile(in nsICmdLineService aCmdService);
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// Splash screen functions.
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void showSplashScreen();
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void hideSplashScreen();
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// Server mode.
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attribute boolean isServerMode;
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attribute boolean shouldShowUI;
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void startServerMode();
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void onLastWindowClosing();
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void ReOpen();
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};
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