dlls/objsel/factory.c

   1 /*
   2  *      ClassFactory implementation for OBJSEL.dll
   3  *
   4  * Copyright (C) 2002 John K. Hohm
   5  * Copyright (C) 2002 Robert Shearman
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "objsel_private.h"
  23
  24 #include "wine/debug.h"
  25
  26 WINE_DEFAULT_DEBUG_CHANNEL(objsel);
  27
  28
  29 static inline ClassFactoryImpl *impl_from_IClassFactory(IClassFactory *iface)
  30 {
  31     return CONTAINING_RECORD(iface, ClassFactoryImpl, IClassFactory_iface);
  32 }
  33
  34 /**********************************************************************
  35  * OBJSEL_IClassFactory_QueryInterface (also IUnknown)
  36  */
  37 static HRESULT WINAPI OBJSEL_IClassFactory_QueryInterface(
  38     LPCLASSFACTORY iface,
  39     REFIID riid,
  40     LPVOID *ppvObj)
  41 {
  42     TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));
  43
  44     if (ppvObj == NULL) return E_POINTER;
  45
  46     if (IsEqualGUID(riid, &IID_IUnknown) ||
  47         IsEqualGUID(riid, &IID_IClassFactory))
  48     {
  49         *ppvObj = iface;
  50         IClassFactory_AddRef(iface);
  51         return S_OK;
  52     }
  53     else if (IsEqualGUID(riid, &IID_IDsObjectPicker))
  54     {
  55         return IClassFactory_CreateInstance(iface, NULL, riid, ppvObj);
  56     }
  57
  58     FIXME("- no interface IID: %s\n", debugstr_guid(riid));
  59     return E_NOINTERFACE;
  60 }
  61
  62
  63 /**********************************************************************
  64  * OBJSEL_IClassFactory_AddRef (also IUnknown)
  65  */
  66 static ULONG WINAPI OBJSEL_IClassFactory_AddRef(LPCLASSFACTORY iface)
  67 {
  68     ClassFactoryImpl *This = impl_from_IClassFactory(iface);
  69     ULONG ref;
  70
  71     TRACE("\n");
  72
  73     if (This == NULL) return E_POINTER;
  74
  75     ref = InterlockedIncrement(&This->ref);
  76
  77     if (ref == 1)
  78     {
  79         InterlockedIncrement(&dll_refs);
  80     }
  81
  82     return ref;
  83 }
  84
  85
  86 /**********************************************************************
  87  * OBJSEL_IClassFactory_Release (also IUnknown)
  88  */
  89 static ULONG WINAPI OBJSEL_IClassFactory_Release(LPCLASSFACTORY iface)
  90 {
  91     ClassFactoryImpl *This = impl_from_IClassFactory(iface);
  92     ULONG ref;
  93
  94     TRACE("\n");
  95
  96     if (This == NULL) return E_POINTER;
  97
  98     ref = InterlockedDecrement(&This->ref);
  99
 100     if (ref == 0)
 101     {
 102         InterlockedDecrement(&dll_refs);
 103     }
 104
 105     return ref;
 106 }
 107
 108
 109 /**********************************************************************
 110  * OBJSEL_IClassFactory_CreateInstance
 111  */
 112 static HRESULT WINAPI OBJSEL_IClassFactory_CreateInstance(
 113     LPCLASSFACTORY iface,
 114     LPUNKNOWN pUnkOuter,
 115     REFIID riid,
 116     LPVOID *ppvObj)
 117 {
 118     TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));
 119
 120     if (ppvObj == NULL) return E_POINTER;
 121
 122     /* Don't support aggregation (Windows doesn't) */
 123     if (pUnkOuter != NULL) return CLASS_E_NOAGGREGATION;
 124
 125     if (IsEqualGUID(&IID_IDsObjectPicker, riid))
 126     {
 127         return OBJSEL_IDsObjectPicker_Create(ppvObj);
 128     }
 129
 130     return CLASS_E_CLASSNOTAVAILABLE;
 131 }
 132
 133
 134 /**********************************************************************
 135  * OBJSEL_IClassFactory_LockServer
 136  */
 137 static HRESULT WINAPI OBJSEL_IClassFactory_LockServer(
 138     LPCLASSFACTORY iface,
 139     BOOL fLock)
 140 {
 141     TRACE("\n");
 142
 143     if (fLock)
 144         IClassFactory_AddRef(iface);
 145     else
 146         IClassFactory_Release(iface);
 147     return S_OK;
 148 }
 149
 150
 151 /**********************************************************************
 152  * IClassFactory_Vtbl
 153  */
 154 static IClassFactoryVtbl IClassFactory_Vtbl =
 155 {
 156     OBJSEL_IClassFactory_QueryInterface,
 157     OBJSEL_IClassFactory_AddRef,
 158     OBJSEL_IClassFactory_Release,
 159     OBJSEL_IClassFactory_CreateInstance,
 160     OBJSEL_IClassFactory_LockServer
 161 };
 162
 163
 164 /**********************************************************************
 165  * static ClassFactory instance
 166  */
 167
 168 ClassFactoryImpl OBJSEL_ClassFactory = { { &IClassFactory_Vtbl }, 0 };