| /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
| * |
| * ***** BEGIN LICENSE BLOCK ***** |
| * Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
| * |
| * The contents of this file are subject to the Mozilla Public License Version |
| * 1.1 (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/MPL/ |
| * |
| * 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 the Mozilla browser. |
| * |
| * The Initial Developer of the Original Code is |
| * Netscape Communications, Inc. |
| * Portions created by the Initial Developer are Copyright (C) 1999 |
| * the Initial Developer. All Rights Reserved. |
| * |
| * Contributor(s): |
| * Scott Collins <scc@netscape.com> |
| * |
| * Alternatively, the contents of this file may be used under the terms of |
| * either of the GNU General Public License Version 2 or later (the "GPL"), |
| * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), |
| * in which case the provisions of the GPL or the LGPL are applicable instead |
| * of those above. If you wish to allow use of your version of this file only |
| * under the terms of either the GPL or the LGPL, and not to allow others to |
| * use your version of this file under the terms of the MPL, indicate your |
| * decision by deleting the provisions above and replace them with the notice |
| * and other provisions required by the GPL or the LGPL. If you do not delete |
| * the provisions above, a recipient may use your version of this file under |
| * the terms of any one of the MPL, the GPL or the LGPL. |
| * |
| * ***** END LICENSE BLOCK ***** */ |
| |
| #ifndef nsWeakReference_h__ |
| #define nsWeakReference_h__ |
| |
| // nsWeakReference.h |
| |
| #include "nsIWeakReference.h" |
| #include "nsIWeakReferenceUtils.h" |
| |
| class nsWeakReference; |
| |
| // Set IMETHOD_VISIBILITY to empty so that the class-level NS_COM declaration |
| // controls member method visibility. |
| #undef IMETHOD_VISIBILITY |
| #define IMETHOD_VISIBILITY NS_COM_GLUE |
| |
| class NS_COM_GLUE nsSupportsWeakReference : public nsISupportsWeakReference |
| { |
| public: |
| nsSupportsWeakReference() |
| : mProxy(0) |
| { |
| // nothing else to do here |
| } |
| |
| NS_DECL_NSISUPPORTSWEAKREFERENCE |
| |
| protected: |
| inline ~nsSupportsWeakReference(); |
| |
| private: |
| friend class nsWeakReference; |
| |
| void |
| NoticeProxyDestruction() |
| // ...called (only) by an |nsWeakReference| from _its_ dtor. |
| { |
| mProxy = 0; |
| } |
| |
| nsWeakReference* mProxy; |
| |
| protected: |
| |
| void ClearWeakReferences(); |
| PRBool HasWeakReferences() const {return mProxy != 0;} |
| }; |
| |
| #undef IMETHOD_VISIBILITY |
| #define IMETHOD_VISIBILITY NS_VISIBILITY_HIDDEN |
| |
| inline |
| nsSupportsWeakReference::~nsSupportsWeakReference() |
| { |
| ClearWeakReferences(); |
| } |
| |
| #endif |