dlls/mshtml/conpoint.c

   1 /*
   2  * Copyright 2006 Jacek Caban for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include <stdarg.h>
  20
  21 #define COBJMACROS
  22
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "winuser.h"
  26 #include "ole2.h"
  27
  28 #include "wine/debug.h"
  29
  30 #include "mshtml_private.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(mshtml);
  33
  34 static const char *debugstr_cp_guid(REFIID riid)
  35 {
  36 #define X(x) \
  37     if(IsEqualGUID(riid, &x)) \
  38         return #x
  39
  40     X(IID_IPropertyNotifySink);
  41     X(DIID_HTMLDocumentEvents);
  42     X(DIID_HTMLDocumentEvents2);
  43     X(DIID_HTMLTableEvents);
  44     X(DIID_HTMLTextContainerEvents);
  45
  46 #undef X
  47
  48     return debugstr_guid(riid);
  49 }
  50
  51 static inline ConnectionPoint *impl_from_IConnectionPoint(IConnectionPoint *iface)
  52 {
  53     return CONTAINING_RECORD(iface, ConnectionPoint, IConnectionPoint_iface);
  54 }
  55
  56 static HRESULT WINAPI ConnectionPoint_QueryInterface(IConnectionPoint *iface,
  57                                                      REFIID riid, LPVOID *ppv)
  58 {
  59     ConnectionPoint *This = impl_from_IConnectionPoint(iface);
  60
  61     *ppv = NULL;
  62
  63     if(IsEqualGUID(&IID_IUnknown, riid)) {
  64         TRACE("(%p)->(IID_IUnknown %p)\n", This, ppv);
  65         *ppv = &This->IConnectionPoint_iface;
  66     }else if(IsEqualGUID(&IID_IConnectionPoint, riid)) {
  67         TRACE("(%p)->(IID_IConnectionPoint %p)\n", This, ppv);
  68         *ppv = &This->IConnectionPoint_iface;
  69     }
  70
  71     if(*ppv) {
  72         IUnknown_AddRef((IUnknown*)*ppv);
  73         return S_OK;
  74     }
  75
  76     WARN("Unsupported interface %s\n", debugstr_guid(riid));
  77     return E_NOINTERFACE;
  78 }
  79
  80 static ULONG WINAPI ConnectionPoint_AddRef(IConnectionPoint *iface)
  81 {
  82     ConnectionPoint *This = impl_from_IConnectionPoint(iface);
  83     return IConnectionPointContainer_AddRef(&This->container->IConnectionPointContainer_iface);
  84 }
  85
  86 static ULONG WINAPI ConnectionPoint_Release(IConnectionPoint *iface)
  87 {
  88     ConnectionPoint *This = impl_from_IConnectionPoint(iface);
  89     return IConnectionPointContainer_Release(&This->container->IConnectionPointContainer_iface);
  90 }
  91
  92 static HRESULT WINAPI ConnectionPoint_GetConnectionInterface(IConnectionPoint *iface, IID *pIID)
  93 {
  94     ConnectionPoint *This = impl_from_IConnectionPoint(iface);
  95
  96     TRACE("(%p)->(%p)\n", This, pIID);
  97
  98     if(!pIID)
  99         return E_POINTER;
 100
 101     *pIID = *This->iid;
 102     return S_OK;
 103 }
 104
 105 static HRESULT WINAPI ConnectionPoint_GetConnectionPointContainer(IConnectionPoint *iface,
 106         IConnectionPointContainer **ppCPC)
 107 {
 108     ConnectionPoint *This = impl_from_IConnectionPoint(iface);
 109
 110     TRACE("(%p)->(%p)\n", This, ppCPC);
 111
 112     if(!ppCPC)
 113         return E_POINTER;
 114
 115     *ppCPC = &This->container->IConnectionPointContainer_iface;
 116     IConnectionPointContainer_AddRef(*ppCPC);
 117     return S_OK;
 118 }
 119
 120 static HRESULT WINAPI ConnectionPoint_Advise(IConnectionPoint *iface, IUnknown *pUnkSink,
 121                                              DWORD *pdwCookie)
 122 {
 123     ConnectionPoint *This = impl_from_IConnectionPoint(iface);
 124     IUnknown *sink;
 125     DWORD i;
 126     HRESULT hres;
 127
 128     TRACE("(%p)->(%p %p)\n", This, pUnkSink, pdwCookie);
 129
 130     hres = IUnknown_QueryInterface(pUnkSink, This->iid, (void**)&sink);
 131     if(FAILED(hres) && !IsEqualGUID(&IID_IPropertyNotifySink, This->iid))
 132         hres = IUnknown_QueryInterface(pUnkSink, &IID_IDispatch, (void**)&sink);
 133     if(FAILED(hres))
 134         return CONNECT_E_CANNOTCONNECT;
 135
 136     if(This->sinks) {
 137         for(i=0; i<This->sinks_size; i++) {
 138             if(!This->sinks[i].unk)
 139                 break;
 140         }
 141
 142         if(i == This->sinks_size)
 143             This->sinks = heap_realloc(This->sinks,(++This->sinks_size)*sizeof(*This->sinks));
 144     }else {
 145         This->sinks = heap_alloc(sizeof(*This->sinks));
 146         This->sinks_size = 1;
 147         i = 0;
 148     }
 149
 150     This->sinks[i].unk = sink;
 151     if(pdwCookie)
 152         *pdwCookie = i+1;
 153
 154     if(!i && This->data && This->data->on_advise)
 155         This->data->on_advise(This->container->outer, This->data);
 156
 157     return S_OK;
 158 }
 159
 160 static HRESULT WINAPI ConnectionPoint_Unadvise(IConnectionPoint *iface, DWORD dwCookie)
 161 {
 162     ConnectionPoint *This = impl_from_IConnectionPoint(iface);
 163     TRACE("(%p)->(%d)\n", This, dwCookie);
 164
 165     if(!dwCookie || dwCookie > This->sinks_size || !This->sinks[dwCookie-1].unk)
 166         return CONNECT_E_NOCONNECTION;
 167
 168     IUnknown_Release(This->sinks[dwCookie-1].unk);
 169     This->sinks[dwCookie-1].unk = NULL;
 170
 171     return S_OK;
 172 }
 173
 174 static HRESULT WINAPI ConnectionPoint_EnumConnections(IConnectionPoint *iface,
 175                                                       IEnumConnections **ppEnum)
 176 {
 177     ConnectionPoint *This = impl_from_IConnectionPoint(iface);
 178     FIXME("(%p)->(%p)\n", This, ppEnum);
 179     return E_NOTIMPL;
 180 }
 181
 182 static const IConnectionPointVtbl ConnectionPointVtbl =
 183 {
 184     ConnectionPoint_QueryInterface,
 185     ConnectionPoint_AddRef,
 186     ConnectionPoint_Release,
 187     ConnectionPoint_GetConnectionInterface,
 188     ConnectionPoint_GetConnectionPointContainer,
 189     ConnectionPoint_Advise,
 190     ConnectionPoint_Unadvise,
 191     ConnectionPoint_EnumConnections
 192 };
 193
 194 static void ConnectionPoint_Init(ConnectionPoint *cp, ConnectionPointContainer *container, REFIID riid, cp_static_data_t *data)
 195 {
 196     cp->IConnectionPoint_iface.lpVtbl = &ConnectionPointVtbl;
 197     cp->container = container;
 198     cp->sinks = NULL;
 199     cp->sinks_size = 0;
 200     cp->iid = riid;
 201     cp->data = data;
 202 }
 203
 204 static void ConnectionPoint_Destroy(ConnectionPoint *This)
 205 {
 206     DWORD i;
 207
 208     for(i=0; i<This->sinks_size; i++) {
 209         if(This->sinks[i].unk)
 210             IUnknown_Release(This->sinks[i].unk);
 211     }
 212
 213     heap_free(This->sinks);
 214 }
 215
 216 static ConnectionPoint *get_cp(ConnectionPointContainer *container, REFIID riid, BOOL do_create)
 217 {
 218     const cpc_entry_t *iter;
 219     unsigned idx, i;
 220
 221     for(iter = container->cp_entries; iter->riid; iter++) {
 222         if(IsEqualGUID(iter->riid, riid))
 223             break;
 224     }
 225     if(!iter->riid)
 226         return NULL;
 227     idx = iter - container->cp_entries;
 228
 229     if(!container->cps) {
 230         if(!do_create)
 231             return NULL;
 232
 233         while(iter->riid)
 234             iter++;
 235         container->cps = heap_alloc((iter - container->cp_entries) * sizeof(*container->cps));
 236         if(!container->cps)
 237             return NULL;
 238
 239         for(i=0; container->cp_entries[i].riid; i++)
 240             ConnectionPoint_Init(container->cps+i, container, container->cp_entries[i].riid, container->cp_entries[i].desc);
 241     }
 242
 243     return container->cps+idx;
 244 }
 245
 246 void call_property_onchanged(ConnectionPointContainer *container, DISPID dispid)
 247 {
 248     ConnectionPoint *cp;
 249     DWORD i;
 250
 251     cp = get_cp(container, &IID_IPropertyNotifySink, FALSE);
 252     if(!cp)
 253         return;
 254
 255     for(i=0; i<cp->sinks_size; i++) {
 256         if(cp->sinks[i].propnotif)
 257             IPropertyNotifySink_OnChanged(cp->sinks[i].propnotif, dispid);
 258     }
 259 }
 260
 261 static inline ConnectionPointContainer *impl_from_IConnectionPointContainer(IConnectionPointContainer *iface)
 262 {
 263     return CONTAINING_RECORD(iface, ConnectionPointContainer, IConnectionPointContainer_iface);
 264 }
 265
 266 static HRESULT WINAPI ConnectionPointContainer_QueryInterface(IConnectionPointContainer *iface,
 267                                                               REFIID riid, void **ppv)
 268 {
 269     ConnectionPointContainer *This = impl_from_IConnectionPointContainer(iface);
 270     return IUnknown_QueryInterface(This->outer, riid, ppv);
 271 }
 272
 273 static ULONG WINAPI ConnectionPointContainer_AddRef(IConnectionPointContainer *iface)
 274 {
 275     ConnectionPointContainer *This = impl_from_IConnectionPointContainer(iface);
 276     return IUnknown_AddRef(This->outer);
 277 }
 278
 279 static ULONG WINAPI ConnectionPointContainer_Release(IConnectionPointContainer *iface)
 280 {
 281     ConnectionPointContainer *This = impl_from_IConnectionPointContainer(iface);
 282     return IUnknown_Release(This->outer);
 283 }
 284
 285 static HRESULT WINAPI ConnectionPointContainer_EnumConnectionPoints(IConnectionPointContainer *iface,
 286         IEnumConnectionPoints **ppEnum)
 287 {
 288     ConnectionPointContainer *This = impl_from_IConnectionPointContainer(iface);
 289     FIXME("(%p)->(%p)\n", This, ppEnum);
 290     return E_NOTIMPL;
 291 }
 292
 293 static HRESULT WINAPI ConnectionPointContainer_FindConnectionPoint(IConnectionPointContainer *iface,
 294         REFIID riid, IConnectionPoint **ppCP)
 295 {
 296     ConnectionPointContainer *This = impl_from_IConnectionPointContainer(iface);
 297     ConnectionPoint *cp;
 298
 299     TRACE("(%p)->(%s %p)\n", This, debugstr_cp_guid(riid), ppCP);
 300
 301     if(This->forward_container)
 302         return IConnectionPointContainer_FindConnectionPoint(&This->forward_container->IConnectionPointContainer_iface,
 303                 riid, ppCP);
 304
 305     cp = get_cp(This, riid, TRUE);
 306     if(!cp) {
 307         FIXME("unsupported riid %s\n", debugstr_cp_guid(riid));
 308         *ppCP = NULL;
 309         return CONNECT_E_NOCONNECTION;
 310     }
 311
 312     *ppCP = &cp->IConnectionPoint_iface;
 313     IConnectionPoint_AddRef(*ppCP);
 314     return S_OK;
 315 }
 316
 317 static const IConnectionPointContainerVtbl ConnectionPointContainerVtbl = {
 318     ConnectionPointContainer_QueryInterface,
 319     ConnectionPointContainer_AddRef,
 320     ConnectionPointContainer_Release,
 321     ConnectionPointContainer_EnumConnectionPoints,
 322     ConnectionPointContainer_FindConnectionPoint
 323 };
 324
 325 void ConnectionPointContainer_Init(ConnectionPointContainer *This, IUnknown *outer, const cpc_entry_t *cp_entries)
 326 {
 327     This->IConnectionPointContainer_iface.lpVtbl = &ConnectionPointContainerVtbl;
 328     This->cp_entries = cp_entries;
 329     This->cps = NULL;
 330     This->outer = outer;
 331     This->forward_container = NULL;
 332 }
 333
 334 void ConnectionPointContainer_Destroy(ConnectionPointContainer *This)
 335 {
 336     unsigned i;
 337
 338     if(!This->cps)
 339         return;
 340
 341     for(i=0; This->cp_entries[i].riid; i++)
 342         ConnectionPoint_Destroy(This->cps+i);
 343     heap_free(This->cps);
 344 }