activex/connectioncontainer.h

   1 /*****************************************************************************
   2  * connectioncontainer.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 __CONNECTIONCONTAINER_H__
  24 #define __CONNECTIONCONTAINER_H__
  25
  26 #include <ocidl.h>
  27 #include <vector>
  28 #include <queue>
  29 #include <map>
  30
  31 class VLCConnectionPoint : public IConnectionPoint
  32 {
  33
  34 public:
  35
  36     VLCConnectionPoint(IConnectionPointContainer *p_cpc, REFIID iid) :
  37         _iid(iid), _p_cpc(p_cpc) {};
  38     virtual ~VLCConnectionPoint() {};
  39
  40     // IUnknown methods
  41     STDMETHODIMP QueryInterface(REFIID riid, void **ppv)
  42     {
  43         if( NULL == ppv )
  44             return E_POINTER;
  45         if( (IID_IUnknown == riid)
  46          || (IID_IConnectionPoint == riid) )
  47         {
  48             AddRef();
  49             *ppv = reinterpret_cast<LPVOID>(this);
  50             return NOERROR;
  51         }
  52         // must be a standalone object
  53         return E_NOINTERFACE;
  54     };
  55
  56     STDMETHODIMP_(ULONG) AddRef(void) { return _p_cpc->AddRef(); };
  57     STDMETHODIMP_(ULONG) Release(void) { return _p_cpc->Release(); };
  58
  59     // IConnectionPoint methods
  60     STDMETHODIMP GetConnectionInterface(IID *);
  61     STDMETHODIMP GetConnectionPointContainer(LPCONNECTIONPOINTCONTAINER *);
  62     STDMETHODIMP Advise(IUnknown *, DWORD *);
  63     STDMETHODIMP Unadvise(DWORD);
  64     STDMETHODIMP EnumConnections(LPENUMCONNECTIONS *);
  65
  66     void fireEvent(DISPID dispIdMember, DISPPARAMS* pDispParams);
  67     void firePropChangedEvent(DISPID dispId);
  68
  69 private:
  70
  71     REFIID _iid;
  72     IConnectionPointContainer *_p_cpc;
  73     std::map<DWORD, LPUNKNOWN> _connections;
  74 };
  75
  76 //////////////////////////////////////////////////////////////////////////
  77
  78 class VLCDispatchEvent {
  79
  80 public:
  81     VLCDispatchEvent(DISPID dispId, DISPPARAMS dispParams) :
  82         _dispId(dispId), _dispParams(dispParams) {};
  83     VLCDispatchEvent(const VLCDispatchEvent&);
  84     ~VLCDispatchEvent();
  85
  86     DISPID      _dispId;
  87     DISPPARAMS  _dispParams;
  88 };
  89
  90 class VLCConnectionPointContainer : public IConnectionPointContainer
  91 {
  92
  93 public:
  94
  95     VLCConnectionPointContainer(VLCPlugin *p_instance);
  96     virtual ~VLCConnectionPointContainer();
  97
  98     // IUnknown methods
  99     STDMETHODIMP QueryInterface(REFIID riid, void **ppv)
 100     {
 101         if( NULL == ppv)
 102             return E_POINTER;
 103         if( (IID_IUnknown == riid)
 104          || (IID_IConnectionPointContainer == riid) )
 105         {
 106             AddRef();
 107             *ppv = reinterpret_cast<LPVOID>(this);
 108             return NOERROR;
 109         }
 110         return _p_instance->pUnkOuter->QueryInterface(riid, ppv);
 111     };
 112
 113     STDMETHODIMP_(ULONG) AddRef(void) { return _p_instance->pUnkOuter->AddRef(); };
 114     STDMETHODIMP_(ULONG) Release(void) { return _p_instance->pUnkOuter->Release(); };
 115
 116     // IConnectionPointContainer methods
 117     STDMETHODIMP EnumConnectionPoints(LPENUMCONNECTIONPOINTS *);
 118     STDMETHODIMP FindConnectionPoint(REFIID, LPCONNECTIONPOINT *);
 119
 120     void freezeEvents(BOOL);
 121     void fireEvent(DISPID, DISPPARAMS*);
 122     void firePropChangedEvent(DISPID dispId);
 123
 124 private:
 125
 126     VLCPlugin *_p_instance;
 127     BOOL _b_freeze;
 128     VLCConnectionPoint *_p_events;
 129     VLCConnectionPoint *_p_props;
 130     std::vector<LPCONNECTIONPOINT> _v_cps;
 131     std::queue<class VLCDispatchEvent *> _q_events;
 132 };
 133
 134 #endif
 135