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       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef _DBAUI_MODULE_DBU_HXX_
      21             : #define _DBAUI_MODULE_DBU_HXX_
      22             : 
      23             : #include <osl/mutex.hxx>
      24             : #include <tools/resid.hxx>
      25             : 
      26             : class ResMgr;
      27             : 
      28             : //.........................................................................
      29             : namespace dbaui
      30             : {
      31             : //.........................................................................
      32             : 
      33             : //=========================================================================
      34             : //= OModule
      35             : //=========================================================================
      36             : class OModuleImpl;
      37             : class OModule
      38             : {
      39             :     friend class OModuleClient;
      40             : 
      41             : private:
      42             :     OModule();
      43             :         // not implemented. OModule is a static class
      44             : 
      45             : protected:
      46             :     static ::osl::Mutex s_aMutex;       /// access safety
      47             :     static sal_Int32    s_nClients;     /// number of registered clients
      48             :     static OModuleImpl* s_pImpl;        /// impl class. lives as long as at least one client for the module is registered
      49             : 
      50             : public:
      51             :     /// get the vcl res manager of the module
      52             :     static ResMgr*  getResManager();
      53             : 
      54             : protected:
      55             :     /// register a client for the module
      56             :     static void registerClient();
      57             :     /// revoke a client for the module
      58             :     static void revokeClient();
      59             : 
      60             : private:
      61             :     /** ensure that the impl class exists
      62             :         @precond m_aMutex is guarded when this method gets called
      63             :     */
      64             :     static void ensureImpl();
      65             : };
      66             : 
      67             : //=========================================================================
      68             : //= OModuleClient
      69             : //=========================================================================
      70             : /** base class for objects which uses any global module-specific resources
      71             : */
      72             : class OModuleClient
      73             : {
      74             : public:
      75           0 :     OModuleClient()     { OModule::registerClient(); }
      76           0 :     ~OModuleClient()    { OModule::revokeClient(); }
      77             : };
      78             : 
      79             : //=========================================================================
      80             : //= ModuleRes
      81             : //=========================================================================
      82             : /** specialized ResId, using the resource manager provided by the global module
      83             : */
      84             : class ModuleRes : public ::ResId
      85             : {
      86             : public:
      87           0 :     ModuleRes(sal_uInt16 _nId) : ResId(_nId, *OModule::getResManager()) { }
      88             : };
      89             : 
      90             : //.........................................................................
      91             : }   // namespace dbaui
      92             : //.........................................................................
      93             : 
      94             : #endif // _DBAUI_MODULE_DBU_HXX_
      95             : 
      96             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */