1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2 : *
3 : * ***** BEGIN LICENSE BLOCK *****
4 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
5 : *
6 : * The contents of this file are subject to the Mozilla Public License Version
7 : * 1.1 (the "License"); you may not use this file except in compliance with
8 : * the License. You may obtain a copy of the License at
9 : * http://www.mozilla.org/MPL/
10 : *
11 : * Software distributed under the License is distributed on an "AS IS" basis,
12 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13 : * for the specific language governing rights and limitations under the
14 : * License.
15 : *
16 : * The Original Code is the Mozilla browser.
17 : *
18 : * The Initial Developer of the Original Code is
19 : * Netscape Communications, Inc.
20 : * Portions created by the Initial Developer are Copyright (C) 1999
21 : * the Initial Developer. All Rights Reserved.
22 : *
23 : * Contributor(s):
24 : * Scott Collins <scc@netscape.com>
25 : *
26 : * Alternatively, the contents of this file may be used under the terms of
27 : * either of the GNU General Public License Version 2 or later (the "GPL"),
28 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
29 : * in which case the provisions of the GPL or the LGPL are applicable instead
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31 : * under the terms of either the GPL or the LGPL, and not to allow others to
32 : * use your version of this file under the terms of the MPL, indicate your
33 : * decision by deleting the provisions above and replace them with the notice
34 : * and other provisions required by the GPL or the LGPL. If you do not delete
35 : * the provisions above, a recipient may use your version of this file under
36 : * the terms of any one of the MPL, the GPL or the LGPL.
37 : *
38 : * ***** END LICENSE BLOCK ***** */
39 :
40 : #ifndef nsWeakReference_h__
41 : #define nsWeakReference_h__
42 :
43 : // nsWeakReference.h
44 :
45 : #include "nsIWeakReferenceUtils.h"
46 :
47 : class nsWeakReference;
48 :
49 : // Set IMETHOD_VISIBILITY to empty so that the class-level NS_COM declaration
50 : // controls member method visibility.
51 : #undef IMETHOD_VISIBILITY
52 : #define IMETHOD_VISIBILITY NS_COM_GLUE
53 :
54 : class NS_COM_GLUE nsSupportsWeakReference : public nsISupportsWeakReference
55 : {
56 : public:
57 154874 : nsSupportsWeakReference()
58 154874 : : mProxy(0)
59 : {
60 : // nothing else to do here
61 154874 : }
62 :
63 : NS_DECL_NSISUPPORTSWEAKREFERENCE
64 :
65 : protected:
66 : inline ~nsSupportsWeakReference();
67 :
68 : private:
69 : friend class nsWeakReference;
70 :
71 : void
72 : NoticeProxyDestruction()
73 : // ...called (only) by an |nsWeakReference| from _its_ dtor.
74 : {
75 : mProxy = 0;
76 : }
77 :
78 : nsWeakReference* mProxy;
79 :
80 : protected:
81 :
82 : void ClearWeakReferences();
83 113769 : bool HasWeakReferences() const {return mProxy != 0;}
84 : };
85 :
86 : #undef IMETHOD_VISIBILITY
87 : #define IMETHOD_VISIBILITY NS_VISIBILITY_HIDDEN
88 :
89 : inline
90 154311 : nsSupportsWeakReference::~nsSupportsWeakReference()
91 : {
92 154311 : ClearWeakReferences();
93 154311 : }
94 :
95 : #endif
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