reactos/dll/win32/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 "mshtml_private.h"
  20
  21 typedef struct {
  22     IEnumConnections IEnumConnections_iface;
  23
  24     LONG ref;
  25
  26     unsigned iter;
  27     ConnectionPoint *cp;
  28 } EnumConnections;
  29
  30 static inline EnumConnections *impl_from_IEnumConnections(IEnumConnections *iface)
  31 {
  32     return CONTAINING_RECORD(iface, EnumConnections, IEnumConnections_iface);
  33 }
  34
  35 static HRESULT WINAPI EnumConnections_QueryInterface(IEnumConnections *iface, REFIID riid, void **ppv)
  36 {
  37     EnumConnections *This = impl_from_IEnumConnections(iface);
  38
  39     TRACE("(%p)->(%s %p)\n", This, debugstr_mshtml_guid(riid), ppv);
  40
  41     if(IsEqualGUID(riid, &IID_IUnknown)) {
  42         *ppv = &This->IEnumConnections_iface;
  43     }else if(IsEqualGUID(riid, &IID_IEnumConnections)) {
  44         *ppv = &This->IEnumConnections_iface;
  45     }else {
  46         WARN("(%p)->(%s %p)\n", This, debugstr_mshtml_guid(riid), ppv);
  47         *ppv = NULL;
  48         return E_NOINTERFACE;
  49     }
  50
  51     IUnknown_AddRef((IUnknown*)*ppv);
  52     return S_OK;
  53 }
  54
  55 static ULONG WINAPI EnumConnections_AddRef(IEnumConnections *iface)
  56 {
  57     EnumConnections *This = impl_from_IEnumConnections(iface);
  58     ULONG ref = InterlockedIncrement(&This->ref);
  59
  60     TRACE("(%p) ref=%d\n", This, ref);
  61
  62     return ref;
  63 }
  64
  65 static ULONG WINAPI EnumConnections_Release(IEnumConnections *iface)
  66 {
  67     EnumConnections *This = impl_from_IEnumConnections(iface);
  68     ULONG ref = InterlockedDecrement(&This->ref);
  69
  70     TRACE("(%p) ref=%d\n", This, ref);
  71
  72     if(!ref) {
  73         IConnectionPoint_Release(&This->cp->IConnectionPoint_iface);
  74         heap_free(This);
  75     }
  76
  77     return ref;
  78 }
  79
  80 static HRESULT WINAPI EnumConnections_Next(IEnumConnections *iface, ULONG cConnections, CONNECTDATA *rgcd, ULONG *pcFetched)
  81 {
  82     EnumConnections *This = impl_from_IEnumConnections(iface);
  83     ULONG fetched = 0;
  84
  85     TRACE("(%p)->(%d %p %p)\n", This, cConnections, rgcd, pcFetched);
  86
  87     while(fetched < cConnections && This->iter < This->cp->sinks_size) {
  88         if(!This->cp->sinks[This->iter].unk) {
  89             This->iter++;
  90             continue;
  91         }
  92
  93         rgcd[fetched].pUnk = This->cp->sinks[This->iter].unk;
  94         rgcd[fetched].dwCookie = ++This->iter;
  95         IUnknown_AddRef(rgcd[fetched].pUnk);
  96         fetched++;
  97     }
  98
  99     if(pcFetched)
 100         *pcFetched = fetched;
 101     return fetched == cConnections ? S_OK : S_FALSE;
 102 }
 103
 104 static HRESULT WINAPI EnumConnections_Skip(IEnumConnections *iface, ULONG cConnections)
 105 {
 106     EnumConnections *This = impl_from_IEnumConnections(iface);
 107     FIXME("(%p)->(%d)\n", This, cConnections);
 108     return E_NOTIMPL;
 109 }
 110
 111 static HRESULT WINAPI EnumConnections_Reset(IEnumConnections *iface)
 112 {
 113     EnumConnections *This = impl_from_IEnumConnections(iface);
 114     FIXME("(%p)\n", This);
 115     return E_NOTIMPL;
 116 }
 117
 118 static HRESULT WINAPI EnumConnections_Clone(IEnumConnections *iface, IEnumConnections **ppEnum)
 119 {
 120     EnumConnections *This = impl_from_IEnumConnections(iface);
 121     FIXME("(%p)->(%p)\n", This, ppEnum);
 122     return E_NOTIMPL;
 123 }
 124
 125 static const IEnumConnectionsVtbl EnumConnectionsVtbl = {
 126     EnumConnections_QueryInterface,
 127     EnumConnections_AddRef,
 128     EnumConnections_Release,
 129     EnumConnections_Next,
 130     EnumConnections_Skip,
 131     EnumConnections_Reset,
 132     EnumConnections_Clone
 133 };
 134
 135 static inline ConnectionPoint *impl_from_IConnectionPoint(IConnectionPoint *iface)
 136 {
 137     return CONTAINING_RECORD(iface, ConnectionPoint, IConnectionPoint_iface);
 138 }
 139
 140 static HRESULT WINAPI ConnectionPoint_QueryInterface(IConnectionPoint *iface,
 141                                                      REFIID riid, LPVOID *ppv)
 142 {
 143     ConnectionPoint *This = impl_from_IConnectionPoint(iface);
 144
 145     TRACE("(%p)->(%s %p)\n", This, debugstr_mshtml_guid(riid), ppv);
 146
 147     if(IsEqualGUID(&IID_IUnknown, riid)) {
 148         *ppv = &This->IConnectionPoint_iface;
 149     }else if(IsEqualGUID(&IID_IConnectionPoint, riid)) {
 150         *ppv = &This->IConnectionPoint_iface;
 151     }else {
 152         *ppv = NULL;
 153         WARN("Unsupported interface %s\n", debugstr_mshtml_guid(riid));
 154         return E_NOINTERFACE;
 155     }
 156
 157     IUnknown_AddRef((IUnknown*)*ppv);
 158     return S_OK;
 159 }
 160
 161 static ULONG WINAPI ConnectionPoint_AddRef(IConnectionPoint *iface)
 162 {
 163     ConnectionPoint *This = impl_from_IConnectionPoint(iface);
 164     return IConnectionPointContainer_AddRef(&This->container->IConnectionPointContainer_iface);
 165 }
 166
 167 static ULONG WINAPI ConnectionPoint_Release(IConnectionPoint *iface)
 168 {
 169     ConnectionPoint *This = impl_from_IConnectionPoint(iface);
 170     return IConnectionPointContainer_Release(&This->container->IConnectionPointContainer_iface);
 171 }
 172
 173 static HRESULT WINAPI ConnectionPoint_GetConnectionInterface(IConnectionPoint *iface, IID *pIID)
 174 {
 175     ConnectionPoint *This = impl_from_IConnectionPoint(iface);
 176
 177     TRACE("(%p)->(%p)\n", This, pIID);
 178
 179     if(!pIID)
 180         return E_POINTER;
 181
 182     *pIID = *This->iid;
 183     return S_OK;
 184 }
 185
 186 static HRESULT WINAPI ConnectionPoint_GetConnectionPointContainer(IConnectionPoint *iface,
 187         IConnectionPointContainer **ppCPC)
 188 {
 189     ConnectionPoint *This = impl_from_IConnectionPoint(iface);
 190
 191     TRACE("(%p)->(%p)\n", This, ppCPC);
 192
 193     if(!ppCPC)
 194         return E_POINTER;
 195
 196     *ppCPC = &This->container->IConnectionPointContainer_iface;
 197     IConnectionPointContainer_AddRef(*ppCPC);
 198     return S_OK;
 199 }
 200
 201 static HRESULT WINAPI ConnectionPoint_Advise(IConnectionPoint *iface, IUnknown *pUnkSink,
 202                                              DWORD *pdwCookie)
 203 {
 204     ConnectionPoint *This = impl_from_IConnectionPoint(iface);
 205     IUnknown *sink;
 206     DWORD i;
 207     HRESULT hres;
 208
 209     TRACE("(%p)->(%p %p)\n", This, pUnkSink, pdwCookie);
 210
 211     hres = IUnknown_QueryInterface(pUnkSink, This->iid, (void**)&sink);
 212     if(FAILED(hres) && !IsEqualGUID(&IID_IPropertyNotifySink, This->iid))
 213         hres = IUnknown_QueryInterface(pUnkSink, &IID_IDispatch, (void**)&sink);
 214     if(FAILED(hres))
 215         return CONNECT_E_CANNOTCONNECT;
 216
 217     if(This->sinks) {
 218         for(i=0; i<This->sinks_size; i++) {
 219             if(!This->sinks[i].unk)
 220                 break;
 221         }
 222
 223         if(i == This->sinks_size)
 224             This->sinks = heap_realloc(This->sinks,(++This->sinks_size)*sizeof(*This->sinks));
 225     }else {
 226         This->sinks = heap_alloc(sizeof(*This->sinks));
 227         This->sinks_size = 1;
 228         i = 0;
 229     }
 230
 231     This->sinks[i].unk = sink;
 232     if(pdwCookie)
 233         *pdwCookie = i+1;
 234
 235     if(!i && This->data && This->data->on_advise)
 236         This->data->on_advise(This->container->outer, This->data);
 237
 238     return S_OK;
 239 }
 240
 241 static HRESULT WINAPI ConnectionPoint_Unadvise(IConnectionPoint *iface, DWORD dwCookie)
 242 {
 243     ConnectionPoint *This = impl_from_IConnectionPoint(iface);
 244     TRACE("(%p)->(%d)\n", This, dwCookie);
 245
 246     if(!dwCookie || dwCookie > This->sinks_size || !This->sinks[dwCookie-1].unk)
 247         return CONNECT_E_NOCONNECTION;
 248
 249     IUnknown_Release(This->sinks[dwCookie-1].unk);
 250     This->sinks[dwCookie-1].unk = NULL;
 251
 252     return S_OK;
 253 }
 254
 255 static HRESULT WINAPI ConnectionPoint_EnumConnections(IConnectionPoint *iface,
 256                                                       IEnumConnections **ppEnum)
 257 {
 258     ConnectionPoint *This = impl_from_IConnectionPoint(iface);
 259     EnumConnections *ret;
 260
 261     TRACE("(%p)->(%p)\n", This, ppEnum);
 262
 263     ret = heap_alloc(sizeof(*ret));
 264     if(!ret)
 265         return E_OUTOFMEMORY;
 266
 267     ret->IEnumConnections_iface.lpVtbl = &EnumConnectionsVtbl;
 268     ret->ref = 1;
 269     ret->iter = 0;
 270
 271     IConnectionPoint_AddRef(&This->IConnectionPoint_iface);
 272     ret->cp = This;
 273
 274     *ppEnum = &ret->IEnumConnections_iface;
 275     return S_OK;
 276 }
 277
 278 static const IConnectionPointVtbl ConnectionPointVtbl =
 279 {
 280     ConnectionPoint_QueryInterface,
 281     ConnectionPoint_AddRef,
 282     ConnectionPoint_Release,
 283     ConnectionPoint_GetConnectionInterface,
 284     ConnectionPoint_GetConnectionPointContainer,
 285     ConnectionPoint_Advise,
 286     ConnectionPoint_Unadvise,
 287     ConnectionPoint_EnumConnections
 288 };
 289
 290 static void ConnectionPoint_Init(ConnectionPoint *cp, ConnectionPointContainer *container, REFIID riid, cp_static_data_t *data)
 291 {
 292     cp->IConnectionPoint_iface.lpVtbl = &ConnectionPointVtbl;
 293     cp->container = container;
 294     cp->sinks = NULL;
 295     cp->sinks_size = 0;
 296     cp->iid = riid;
 297     cp->data = data;
 298 }
 299
 300 static void ConnectionPoint_Destroy(ConnectionPoint *This)
 301 {
 302     DWORD i;
 303
 304     for(i=0; i<This->sinks_size; i++) {
 305         if(This->sinks[i].unk)
 306             IUnknown_Release(This->sinks[i].unk);
 307     }
 308
 309     heap_free(This->sinks);
 310 }
 311
 312 static ConnectionPoint *get_cp(ConnectionPointContainer *container, REFIID riid, BOOL do_create)
 313 {
 314     const cpc_entry_t *iter;
 315     unsigned idx, i;
 316
 317     for(iter = container->cp_entries; iter->riid; iter++) {
 318         if(IsEqualGUID(iter->riid, riid))
 319             break;
 320     }
 321     if(!iter->riid)
 322         return NULL;
 323     idx = iter - container->cp_entries;
 324
 325     if(!container->cps) {
 326         if(!do_create)
 327             return NULL;
 328
 329         while(iter->riid)
 330             iter++;
 331         container->cps = heap_alloc((iter - container->cp_entries) * sizeof(*container->cps));
 332         if(!container->cps)
 333             return NULL;
 334
 335         for(i=0; container->cp_entries[i].riid; i++)
 336             ConnectionPoint_Init(container->cps+i, container, container->cp_entries[i].riid, container->cp_entries[i].desc);
 337     }
 338
 339     return container->cps+idx;
 340 }
 341
 342 void call_property_onchanged(ConnectionPointContainer *container, DISPID dispid)
 343 {
 344     ConnectionPoint *cp;
 345     DWORD i;
 346
 347     cp = get_cp(container, &IID_IPropertyNotifySink, FALSE);
 348     if(!cp)
 349         return;
 350
 351     for(i=0; i<cp->sinks_size; i++) {
 352         if(cp->sinks[i].propnotif)
 353             IPropertyNotifySink_OnChanged(cp->sinks[i].propnotif, dispid);
 354     }
 355 }
 356
 357 static inline ConnectionPointContainer *impl_from_IConnectionPointContainer(IConnectionPointContainer *iface)
 358 {
 359     return CONTAINING_RECORD(iface, ConnectionPointContainer, IConnectionPointContainer_iface);
 360 }
 361
 362 static HRESULT WINAPI ConnectionPointContainer_QueryInterface(IConnectionPointContainer *iface,
 363                                                               REFIID riid, void **ppv)
 364 {
 365     ConnectionPointContainer *This = impl_from_IConnectionPointContainer(iface);
 366     return IUnknown_QueryInterface(This->outer, riid, ppv);
 367 }
 368
 369 static ULONG WINAPI ConnectionPointContainer_AddRef(IConnectionPointContainer *iface)
 370 {
 371     ConnectionPointContainer *This = impl_from_IConnectionPointContainer(iface);
 372     return IUnknown_AddRef(This->outer);
 373 }
 374
 375 static ULONG WINAPI ConnectionPointContainer_Release(IConnectionPointContainer *iface)
 376 {
 377     ConnectionPointContainer *This = impl_from_IConnectionPointContainer(iface);
 378     return IUnknown_Release(This->outer);
 379 }
 380
 381 static HRESULT WINAPI ConnectionPointContainer_EnumConnectionPoints(IConnectionPointContainer *iface,
 382         IEnumConnectionPoints **ppEnum)
 383 {
 384     ConnectionPointContainer *This = impl_from_IConnectionPointContainer(iface);
 385     FIXME("(%p)->(%p)\n", This, ppEnum);
 386     return E_NOTIMPL;
 387 }
 388
 389 static HRESULT WINAPI ConnectionPointContainer_FindConnectionPoint(IConnectionPointContainer *iface,
 390         REFIID riid, IConnectionPoint **ppCP)
 391 {
 392     ConnectionPointContainer *This = impl_from_IConnectionPointContainer(iface);
 393     ConnectionPoint *cp;
 394
 395     TRACE("(%p)->(%s %p)\n", This, debugstr_mshtml_guid(riid), ppCP);
 396
 397     if(This->forward_container)
 398         return IConnectionPointContainer_FindConnectionPoint(&This->forward_container->IConnectionPointContainer_iface,
 399                 riid, ppCP);
 400
 401     cp = get_cp(This, riid, TRUE);
 402     if(!cp) {
 403         FIXME("unsupported riid %s\n", debugstr_mshtml_guid(riid));
 404         *ppCP = NULL;
 405         return CONNECT_E_NOCONNECTION;
 406     }
 407
 408     *ppCP = &cp->IConnectionPoint_iface;
 409     IConnectionPoint_AddRef(*ppCP);
 410     return S_OK;
 411 }
 412
 413 static const IConnectionPointContainerVtbl ConnectionPointContainerVtbl = {
 414     ConnectionPointContainer_QueryInterface,
 415     ConnectionPointContainer_AddRef,
 416     ConnectionPointContainer_Release,
 417     ConnectionPointContainer_EnumConnectionPoints,
 418     ConnectionPointContainer_FindConnectionPoint
 419 };
 420
 421 void ConnectionPointContainer_Init(ConnectionPointContainer *This, IUnknown *outer, const cpc_entry_t *cp_entries)
 422 {
 423     This->IConnectionPointContainer_iface.lpVtbl = &ConnectionPointContainerVtbl;
 424     This->cp_entries = cp_entries;
 425     This->cps = NULL;
 426     This->outer = outer;
 427     This->forward_container = NULL;
 428 }
 429
 430 void ConnectionPointContainer_Destroy(ConnectionPointContainer *This)
 431 {
 432     unsigned i;
 433
 434     if(!This->cps)
 435         return;
 436
 437     for(i=0; This->cp_entries[i].riid; i++)
 438         ConnectionPoint_Destroy(This->cps+i);
 439     heap_free(This->cps);
 440 }