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