dlls/shdocvw/factory.c

   1 /*
   2  * Implementation of class factory for IE Web Browser
   3  *
   4  * Copyright 2001 John R. Sheets (for CodeWeavers)
   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 #include <string.h>
  22 #include "wine/debug.h"
  23 #include "shdocvw.h"
  24
  25 WINE_DEFAULT_DEBUG_CHANNEL(shdocvw);
  26
  27 /**********************************************************************
  28  * Implement the WebBrowser class factory
  29  *
  30  * (Based on implementation in ddraw/main.c)
  31  */
  32
  33 typedef struct
  34 {
  35     /* IUnknown fields */
  36     const IClassFactoryVtbl *lpVtbl;
  37     HRESULT (*cf)(LPUNKNOWN, REFIID, LPVOID *);
  38     LONG ref;
  39 } IClassFactoryImpl;
  40
  41
  42 /**********************************************************************
  43  * WBCF_QueryInterface (IUnknown)
  44  */
  45 static HRESULT WINAPI WBCF_QueryInterface(LPCLASSFACTORY iface,
  46                                           REFIID riid, LPVOID *ppobj)
  47 {
  48     TRACE("(%s %p)\n", debugstr_guid(riid), ppobj);
  49
  50     if (!ppobj)
  51         return E_POINTER;
  52
  53     if(IsEqualGUID(&IID_IUnknown, riid) || IsEqualGUID(&IID_IClassFactory, riid)) {
  54         *ppobj = iface;
  55         return S_OK;
  56     }
  57
  58     WARN("Not supported interface %s\n", debugstr_guid(riid));
  59
  60     *ppobj = NULL;
  61     return E_NOINTERFACE;
  62 }
  63
  64 /************************************************************************
  65  * WBCF_AddRef (IUnknown)
  66  */
  67 static ULONG WINAPI WBCF_AddRef(LPCLASSFACTORY iface)
  68 {
  69     SHDOCVW_LockModule();
  70
  71     return 2; /* non-heap based object */
  72 }
  73
  74 /************************************************************************
  75  * WBCF_Release (IUnknown)
  76  */
  77 static ULONG WINAPI WBCF_Release(LPCLASSFACTORY iface)
  78 {
  79     SHDOCVW_UnlockModule();
  80
  81     return 1; /* non-heap based object */
  82 }
  83
  84 /************************************************************************
  85  * WBCF_CreateInstance (IClassFactory)
  86  */
  87 static HRESULT WINAPI WBCF_CreateInstance(LPCLASSFACTORY iface, LPUNKNOWN pOuter,
  88                                           REFIID riid, LPVOID *ppobj)
  89 {
  90     IClassFactoryImpl *This = (IClassFactoryImpl *) iface;
  91     return This->cf(pOuter, riid, ppobj);
  92 }
  93
  94 /************************************************************************
  95  * WBCF_LockServer (IClassFactory)
  96  */
  97 static HRESULT WINAPI WBCF_LockServer(LPCLASSFACTORY iface, BOOL dolock)
  98 {
  99     TRACE("(%d)\n", dolock);
 100
 101     if (dolock)
 102         SHDOCVW_LockModule();
 103     else
 104         SHDOCVW_UnlockModule();
 105
 106     return S_OK;
 107 }
 108
 109 static const IClassFactoryVtbl WBCF_Vtbl =
 110 {
 111     WBCF_QueryInterface,
 112     WBCF_AddRef,
 113     WBCF_Release,
 114     WBCF_CreateInstance,
 115     WBCF_LockServer
 116 };
 117
 118 static IClassFactoryImpl SHDOCVW_WBClassFactory = {&WBCF_Vtbl, WebBrowser_Create};
 119
 120 IClassFactory *get_class_factory(void)
 121 {
 122     return (IClassFactory*) &SHDOCVW_WBClassFactory;
 123 }