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[tortoisegit/TortoiseGitJp.git] / src / TortoiseShell / ShellExtClassFactory.cpp
1 // TortoiseSVN - a Windows shell extension for easy version control\r
2 \r
3 // Copyright (C) 2003-2006 - Stefan Kueng\r
4 \r
5 // This program is free software; you can redistribute it and/or\r
6 // modify it under the terms of the GNU General Public License\r
7 // as published by the Free Software Foundation; either version 2\r
8 // of the License, or (at your option) any later version.\r
9 \r
10 // This program is distributed in the hope that it will be useful,\r
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of\r
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
13 // GNU General Public License for more details.\r
14 \r
15 // You should have received a copy of the GNU General Public License\r
16 // along with this program; if not, write to the Free Software Foundation,\r
17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.\r
18 //\r
19 #include "stdafx.h"\r
20 #include "ShellExt.h"\r
21 #include "ShellExtClassFactory.h"\r
22 \r
23 extern std::set<CShellExt *> g_exts;\r
24 \r
25 CShellExtClassFactory::CShellExtClassFactory(FileState state)\r
26 {\r
27     m_StateToMake = state;\r
28 \r
29     m_cRef = 0L;\r
30         \r
31     g_cRefThisDll++; \r
32 }\r
33 \r
34 CShellExtClassFactory::~CShellExtClassFactory()          \r
35 {\r
36     g_cRefThisDll--;\r
37 }\r
38 \r
39 STDMETHODIMP CShellExtClassFactory::QueryInterface(REFIID riid,\r
40                                                    LPVOID FAR *ppv)\r
41 {\r
42     *ppv = NULL;\r
43 \r
44     // Any interface on this object is the object pointer\r
45         \r
46     if (IsEqualIID(riid, IID_IUnknown) || IsEqualIID(riid, IID_IClassFactory))\r
47     {\r
48         *ppv = (LPCLASSFACTORY)this;\r
49                 \r
50         AddRef();\r
51                 \r
52         return NOERROR;\r
53     }\r
54         \r
55     return E_NOINTERFACE;\r
56 }  \r
57 \r
58 STDMETHODIMP_(ULONG) CShellExtClassFactory::AddRef()\r
59 {\r
60     return ++m_cRef;\r
61 }\r
62 \r
63 STDMETHODIMP_(ULONG) CShellExtClassFactory::Release()\r
64 {\r
65     if (--m_cRef)\r
66         return m_cRef;\r
67 \r
68     delete this;\r
69         \r
70     return 0L;\r
71 }\r
72 \r
73 STDMETHODIMP CShellExtClassFactory::CreateInstance(LPUNKNOWN pUnkOuter,\r
74                                                                                                    REFIID riid,\r
75                                                                                                    LPVOID *ppvObj)\r
76 {\r
77     *ppvObj = NULL;\r
78         \r
79     // Shell extensions typically don't support aggregation (inheritance)\r
80         \r
81     if (pUnkOuter)\r
82         return CLASS_E_NOAGGREGATION;\r
83         \r
84     // Create the main shell extension object.  The shell will then call\r
85     // QueryInterface with IID_IShellExtInit--this is how shell extensions are\r
86     // initialized.\r
87         \r
88     CShellExt* pShellExt = new CShellExt(m_StateToMake);  //Create the CShellExt object\r
89                 \r
90     if (NULL == pShellExt)\r
91         return E_OUTOFMEMORY;\r
92         \r
93     return pShellExt->QueryInterface(riid, ppvObj);\r
94 }\r
95 \r
96 \r
97 STDMETHODIMP CShellExtClassFactory::LockServer(BOOL /*fLock*/)\r
98 {\r
99     return E_NOTIMPL;\r
100 }\r