1 /*
2  * ReactOS Explorer
3  *
4  * Copyright 2009 Andrew Hill <ash77 at domain reactos.org>
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19  */
20 
21 #pragma once
22 
23 template<class T>
24 class IProfferServiceImpl : public IProfferService
25 {
26 public:
ProfferService(REFGUID rguidService,IServiceProvider * psp,DWORD * pdwCookie)27     STDMETHODIMP ProfferService(REFGUID rguidService, IServiceProvider *psp, DWORD *pdwCookie)
28     {
29         return E_NOTIMPL;
30     }
31 
RevokeService(DWORD dwCookie)32     STDMETHODIMP RevokeService(DWORD dwCookie)
33     {
34         return E_NOTIMPL;
35     }
36 
QueryService(REFGUID guidService,REFIID riid,void ** ppvObject)37     HRESULT QueryService(REFGUID guidService, REFIID riid, void **ppvObject)
38     {
39         return E_FAIL;
40     }
41 };
42 
43 /*
44 This subclass corrects a problem with the ATL IConnectionPointImpl.
45 IConnectionPointImpl queries for the exact interface that is published, but at least one
46 implementor of IConnectionPoint (CShellBrowser) advertises DIID_DWebBrowserEvents,
47 but fires events to IDispatch.
48 */
49 template<class T, const IID *piid, class CDV = CComDynamicUnkArray>
50 class MyIConnectionPointImpl : public IConnectionPointImpl<T, piid, CDV>
51 {
52 public:
Advise(IUnknown * pUnkSink,DWORD * pdwCookie)53     STDMETHODIMP Advise(IUnknown *pUnkSink, DWORD *pdwCookie)
54     {
55         IConnectionPointImpl<T, piid, CDV>  *pThisCPImpl;
56         T                                   *pThis;
57         IUnknown                            *adviseSink;
58         DWORD                               newCookie;
59         HRESULT                             hResult;
60 
61         pThis = static_cast<T *>(this);
62         pThisCPImpl = static_cast<IConnectionPointImpl<T, piid, CDV> *>(this);
63         if (pdwCookie != NULL)
64             *pdwCookie = 0;
65         if (pUnkSink == NULL || pdwCookie == NULL)
66             return E_POINTER;
67         hResult = pUnkSink->QueryInterface(IID_IDispatch, reinterpret_cast<void **>(&adviseSink));
68         if (FAILED(hResult))
69         {
70             if (hResult == E_NOINTERFACE)
71                 return CONNECT_E_CANNOTCONNECT;
72             return hResult;
73         }
74         pThis->Lock();
75         newCookie = pThisCPImpl->m_vec.Add(adviseSink);
76         pThis->Unlock();
77         *pdwCookie = newCookie;
78         if (newCookie != 0)
79             hResult = S_OK;
80         else
81         {
82             adviseSink->Release();
83             hResult = CONNECT_E_ADVISELIMIT;
84         }
85         return hResult;
86     }
87 };
88