activex/persiststorage.h

   1 /*****************************************************************************
   2  * persiststorage.h: ActiveX control for VLC
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  *
   6  * Authors: Damien Fouilleul <Damien.Fouilleul@laposte.net>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 #ifndef __PERSISTSTORAGE_H__
  24 #define __PERSISTSTORAGE_H__
  25
  26 #include <ocidl.h>
  27
  28 class VLCPersistStorage : public IPersistStorage
  29 {
  30
  31 public:
  32
  33     VLCPersistStorage(VLCPlugin *p_instance) : _p_instance(p_instance) {};
  34     virtual ~VLCPersistStorage() {};
  35
  36     // IUnknown methods
  37     STDMETHODIMP QueryInterface(REFIID riid, void **ppv)
  38     {
  39         if( NULL == ppv )
  40             return E_POINTER;
  41         if( (IID_IUnknown == riid)
  42          || (IID_IPersist == riid)
  43          || (IID_IPersistStorage == riid) )
  44         {
  45             AddRef();
  46             *ppv = reinterpret_cast<LPVOID>(this);
  47             return NOERROR;
  48         }
  49         return _p_instance->pUnkOuter->QueryInterface(riid, ppv);
  50     };
  51
  52     STDMETHODIMP_(ULONG) AddRef(void) { return _p_instance->pUnkOuter->AddRef(); };
  53     STDMETHODIMP_(ULONG) Release(void) { return _p_instance->pUnkOuter->Release(); };
  54
  55     // IPersist methods
  56     STDMETHODIMP GetClassID(LPCLSID);
  57
  58     // IPersistStorage methods
  59     STDMETHODIMP IsDirty(void);
  60     STDMETHODIMP InitNew(IStorage *);
  61     STDMETHODIMP Load(IStorage *);
  62     STDMETHODIMP Save(IStorage *, BOOL);
  63     STDMETHODIMP SaveCompleted(IStorage *);
  64     STDMETHODIMP HandsOffStorage(void);
  65
  66 private:
  67
  68     VLCPlugin *_p_instance;
  69 };
  70
  71 #endif
  72