/src/mozilla-central/widget/nsAppShellSingleton.h
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1 | | /* -*- Mode: c++; tab-width: 2; indent-tabs-mode: nil; -*- */ |
2 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
3 | | * License, v. 2.0. If a copy of the MPL was not distributed with this |
4 | | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
5 | | |
6 | | #ifndef nsAppShellSingleton_h__ |
7 | | #define nsAppShellSingleton_h__ |
8 | | |
9 | | /** |
10 | | * This file is designed to be included into the file that provides the |
11 | | * nsIModule implementation for a particular widget toolkit. |
12 | | * |
13 | | * The following functions are defined: |
14 | | * nsAppShellInit |
15 | | * nsAppShellShutdown |
16 | | * nsAppShellConstructor |
17 | | * |
18 | | * The nsAppShellInit function is designed to be used as a module constructor. |
19 | | * If you already have a module constructor, then call nsAppShellInit from your |
20 | | * module constructor. |
21 | | * |
22 | | * The nsAppShellShutdown function is designed to be used as a module |
23 | | * destructor. If you already have a module destructor, then call |
24 | | * nsAppShellShutdown from your module destructor. |
25 | | * |
26 | | * The nsAppShellConstructor function is designed to be used as a factory |
27 | | * method for the nsAppShell class. |
28 | | */ |
29 | | |
30 | | #include "nsXULAppAPI.h" |
31 | | |
32 | | static nsIAppShell *sAppShell; |
33 | | |
34 | | static nsresult |
35 | | nsAppShellInit() |
36 | 0 | { |
37 | 0 | NS_ASSERTION(!sAppShell, "already initialized"); |
38 | 0 |
|
39 | 0 | sAppShell = new nsAppShell(); |
40 | 0 | if (!sAppShell) |
41 | 0 | return NS_ERROR_OUT_OF_MEMORY; |
42 | 0 | NS_ADDREF(sAppShell); |
43 | 0 |
|
44 | 0 | nsresult rv; |
45 | 0 | rv = static_cast<nsAppShell*>(sAppShell)->Init(); |
46 | 0 | if (NS_FAILED(rv)) { |
47 | 0 | NS_RELEASE(sAppShell); |
48 | 0 | return rv; |
49 | 0 | } |
50 | 0 |
|
51 | 0 | return NS_OK; |
52 | 0 | } |
53 | | |
54 | | static void |
55 | | nsAppShellShutdown() |
56 | 0 | { |
57 | 0 | NS_RELEASE(sAppShell); |
58 | 0 | } |
59 | | |
60 | | static nsresult |
61 | | nsAppShellConstructor(nsISupports *outer, const nsIID &iid, void **result) |
62 | 0 | { |
63 | 0 | NS_ENSURE_TRUE(!outer, NS_ERROR_NO_AGGREGATION); |
64 | 0 | NS_ENSURE_TRUE(sAppShell, NS_ERROR_NOT_INITIALIZED); |
65 | 0 |
|
66 | 0 | return sAppShell->QueryInterface(iid, result); |
67 | 0 | } |
68 | | |
69 | | #endif // nsAppShellSingleton_h__ |