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wine/dlls/ole32/oleobj.c

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/*
* OLE2 COM objects
*
* Copyright 1998 Eric Kohl
* Copyright 1999 Francis Beaudet
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include <string.h>
#define COBJMACROS
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "winerror.h"
#include "wine/debug.h"
#include "ole2.h"
#include "compobj_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(ole);
#define INITIAL_SINKS 10
static void release_statdata(STATDATA *data)
{
if(data->formatetc.ptd)
{
CoTaskMemFree(data->formatetc.ptd);
data->formatetc.ptd = NULL;
}
if(data->pAdvSink)
{
IAdviseSink_Release(data->pAdvSink);
data->pAdvSink = NULL;
}
}
static HRESULT copy_statdata(STATDATA *dst, const STATDATA *src)
{
*dst = *src;
if(src->formatetc.ptd)
{
dst->formatetc.ptd = CoTaskMemAlloc(src->formatetc.ptd->tdSize);
if(!dst->formatetc.ptd) return E_OUTOFMEMORY;
memcpy(dst->formatetc.ptd, src->formatetc.ptd, src->formatetc.ptd->tdSize);
}
if(dst->pAdvSink) IAdviseSink_AddRef(dst->pAdvSink);
return S_OK;
}
/**************************************************************************
* EnumSTATDATA Implementation
*/
static HRESULT EnumSTATDATA_Construct(IUnknown *holder, ULONG index, DWORD array_len, STATDATA *data, IEnumSTATDATA **ppenum);
typedef struct
{
IEnumSTATDATA IEnumSTATDATA_iface;
LONG ref;
ULONG index;
DWORD num_of_elems;
STATDATA *statdata;
IUnknown *holder;
} EnumSTATDATA;
static inline EnumSTATDATA *impl_from_IEnumSTATDATA(IEnumSTATDATA *iface)
{
return CONTAINING_RECORD(iface, EnumSTATDATA, IEnumSTATDATA_iface);
}
static HRESULT WINAPI EnumSTATDATA_QueryInterface(IEnumSTATDATA *iface, REFIID riid, void **ppv)
{
TRACE("(%s, %p)\n", debugstr_guid(riid), ppv);
if (IsEqualIID(riid, &IID_IUnknown) ||
IsEqualIID(riid, &IID_IEnumSTATDATA))
{
IUnknown_AddRef(iface);
*ppv = iface;
return S_OK;
}
return E_NOINTERFACE;
}
static ULONG WINAPI EnumSTATDATA_AddRef(IEnumSTATDATA *iface)
{
EnumSTATDATA *This = impl_from_IEnumSTATDATA(iface);
TRACE("()\n");
return InterlockedIncrement(&This->ref);
}
static ULONG WINAPI EnumSTATDATA_Release(IEnumSTATDATA *iface)
{
EnumSTATDATA *This = impl_from_IEnumSTATDATA(iface);
LONG refs = InterlockedDecrement(&This->ref);
TRACE("()\n");
if (!refs)
{
DWORD i;
for(i = 0; i < This->num_of_elems; i++)
release_statdata(This->statdata + i);
HeapFree(GetProcessHeap(), 0, This->statdata);
IUnknown_Release(This->holder);
HeapFree(GetProcessHeap(), 0, This);
}
return refs;
}
static HRESULT WINAPI EnumSTATDATA_Next(IEnumSTATDATA *iface, ULONG num, LPSTATDATA data,
ULONG *fetched)
{
EnumSTATDATA *This = impl_from_IEnumSTATDATA(iface);
DWORD count = 0;
HRESULT hr = S_OK;
TRACE("(%d, %p, %p)\n", num, data, fetched);
while(num--)
{
if (This->index >= This->num_of_elems)
{
hr = S_FALSE;
break;
}
copy_statdata(data + count, This->statdata + This->index);
count++;
This->index++;
}
if (fetched) *fetched = count;
return hr;
}
static HRESULT WINAPI EnumSTATDATA_Skip(IEnumSTATDATA *iface, ULONG num)
{
EnumSTATDATA *This = impl_from_IEnumSTATDATA(iface);
TRACE("(%d)\n", num);
if(This->index + num >= This->num_of_elems)
{
This->index = This->num_of_elems;
return S_FALSE;
}
This->index += num;
return S_OK;
}
static HRESULT WINAPI EnumSTATDATA_Reset(IEnumSTATDATA *iface)
{
EnumSTATDATA *This = impl_from_IEnumSTATDATA(iface);
TRACE("()\n");
This->index = 0;
return S_OK;
}
static HRESULT WINAPI EnumSTATDATA_Clone(IEnumSTATDATA *iface, IEnumSTATDATA **ppenum)
{
EnumSTATDATA *This = impl_from_IEnumSTATDATA(iface);
return EnumSTATDATA_Construct(This->holder, This->index, This->num_of_elems, This->statdata, ppenum);
}
static const IEnumSTATDATAVtbl EnumSTATDATA_VTable =
{
EnumSTATDATA_QueryInterface,
EnumSTATDATA_AddRef,
EnumSTATDATA_Release,
EnumSTATDATA_Next,
EnumSTATDATA_Skip,
EnumSTATDATA_Reset,
EnumSTATDATA_Clone
};
static HRESULT EnumSTATDATA_Construct(IUnknown *holder, ULONG index, DWORD array_len, STATDATA *data,
IEnumSTATDATA **ppenum)
{
EnumSTATDATA *This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
DWORD i, count;
if (!This) return E_OUTOFMEMORY;
This->IEnumSTATDATA_iface.lpVtbl = &EnumSTATDATA_VTable;
This->ref = 1;
This->index = index;
This->statdata = HeapAlloc(GetProcessHeap(), 0, array_len * sizeof(*This->statdata));
if(!This->statdata)
{
HeapFree(GetProcessHeap(), 0, This);
return E_OUTOFMEMORY;
}
for(i = 0, count = 0; i < array_len; i++)
{
if(data[i].pAdvSink)
{
copy_statdata(This->statdata + count, data + i);
count++;
}
}
This->num_of_elems = count;
This->holder = holder;
IUnknown_AddRef(holder);
*ppenum = &This->IEnumSTATDATA_iface;
return S_OK;
}
/**************************************************************************
* OleAdviseHolder Implementation
*/
typedef struct
{
IOleAdviseHolder IOleAdviseHolder_iface;
LONG ref;
DWORD max_cons;
STATDATA *connections;
} OleAdviseHolderImpl;
static inline OleAdviseHolderImpl *impl_from_IOleAdviseHolder(IOleAdviseHolder *iface)
{
return CONTAINING_RECORD(iface, OleAdviseHolderImpl, IOleAdviseHolder_iface);
}
/**************************************************************************
* OleAdviseHolderImpl_Destructor
*/
static void OleAdviseHolderImpl_Destructor(OleAdviseHolderImpl *This)
{
DWORD index;
TRACE("%p\n", This);
for (index = 0; index < This->max_cons; index++)
{
if (This->connections[index].pAdvSink != NULL)
release_statdata(This->connections + index);
}
HeapFree(GetProcessHeap(), 0, This->connections);
HeapFree(GetProcessHeap(), 0, This);
}
/**************************************************************************
* OleAdviseHolderImpl_QueryInterface
*/
static HRESULT WINAPI OleAdviseHolderImpl_QueryInterface(IOleAdviseHolder *iface,
REFIID iid, void **obj)
{
OleAdviseHolderImpl *This = impl_from_IOleAdviseHolder(iface);
TRACE("(%p)->(%s,%p)\n",This, debugstr_guid(iid), obj);
if (obj == NULL)
return E_POINTER;
*obj = NULL;
if (IsEqualIID(iid, &IID_IUnknown) ||
IsEqualIID(iid, &IID_IOleAdviseHolder))
{
*obj = &This->IOleAdviseHolder_iface;
}
if(*obj == NULL)
return E_NOINTERFACE;
IUnknown_AddRef((IUnknown*)*obj);
return S_OK;
}
/******************************************************************************
* OleAdviseHolderImpl_AddRef
*/
static ULONG WINAPI OleAdviseHolderImpl_AddRef(IOleAdviseHolder *iface)
{
OleAdviseHolderImpl *This = impl_from_IOleAdviseHolder(iface);
ULONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p)->(ref=%d)\n", This, ref - 1);
return ref;
}
/******************************************************************************
* OleAdviseHolderImpl_Release
*/
static ULONG WINAPI OleAdviseHolderImpl_Release(IOleAdviseHolder *iface)
{
OleAdviseHolderImpl *This = impl_from_IOleAdviseHolder(iface);
ULONG ref;
TRACE("(%p)->(ref=%d)\n", This, This->ref);
ref = InterlockedDecrement(&This->ref);
if (ref == 0) OleAdviseHolderImpl_Destructor(This);
return ref;
}
/******************************************************************************
* OleAdviseHolderImpl_Advise
*/
static HRESULT WINAPI OleAdviseHolderImpl_Advise(IOleAdviseHolder *iface,
IAdviseSink *pAdvise,
DWORD *pdwConnection)
{
DWORD index;
OleAdviseHolderImpl *This = impl_from_IOleAdviseHolder(iface);
STATDATA new_conn;
static const FORMATETC empty_fmtetc = {0, NULL, 0, -1, 0};
TRACE("(%p)->(%p, %p)\n", This, pAdvise, pdwConnection);
if (pdwConnection==NULL)
return E_POINTER;
*pdwConnection = 0;
for (index = 0; index < This->max_cons; index++)
{
if (This->connections[index].pAdvSink == NULL)
break;
}
if (index == This->max_cons)
{
This->max_cons += INITIAL_SINKS;
This->connections = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->connections,
This->max_cons * sizeof(*This->connections));
}
new_conn.pAdvSink = pAdvise;
new_conn.advf = 0;
new_conn.formatetc = empty_fmtetc;
new_conn.dwConnection = index + 1; /* 0 is not a valid cookie, so increment the index */
copy_statdata(This->connections + index, &new_conn);
*pdwConnection = new_conn.dwConnection;
return S_OK;
}
/******************************************************************************
* OleAdviseHolderImpl_Unadvise
*/
static HRESULT WINAPI OleAdviseHolderImpl_Unadvise(IOleAdviseHolder *iface,
DWORD dwConnection)
{
OleAdviseHolderImpl *This = impl_from_IOleAdviseHolder(iface);
DWORD index;
TRACE("(%p)->(%u)\n", This, dwConnection);
/* The connection number is 1 more than the index, see OleAdviseHolder_Advise */
index = dwConnection - 1;
if (index >= This->max_cons || This->connections[index].pAdvSink == NULL)
return OLE_E_NOCONNECTION;
release_statdata(This->connections + index);
return S_OK;
}
/******************************************************************************
* OleAdviseHolderImpl_EnumAdvise
*/
static HRESULT WINAPI OleAdviseHolderImpl_EnumAdvise(IOleAdviseHolder *iface, IEnumSTATDATA **enum_advise)
{
OleAdviseHolderImpl *This = impl_from_IOleAdviseHolder(iface);
IUnknown *unk;
HRESULT hr;
TRACE("(%p)->(%p)\n", This, enum_advise);
IOleAdviseHolder_QueryInterface(iface, &IID_IUnknown, (void**)&unk);
hr = EnumSTATDATA_Construct(unk, 0, This->max_cons, This->connections, enum_advise);
IUnknown_Release(unk);
return hr;
}
/******************************************************************************
* OleAdviseHolderImpl_SendOnRename
*/
static HRESULT WINAPI OleAdviseHolderImpl_SendOnRename(IOleAdviseHolder *iface, IMoniker *pmk)
{
IEnumSTATDATA *pEnum;
HRESULT hr;
TRACE("(%p)->(%p)\n", iface, pmk);
hr = IOleAdviseHolder_EnumAdvise(iface, &pEnum);
if (SUCCEEDED(hr))
{
STATDATA statdata;
while (IEnumSTATDATA_Next(pEnum, 1, &statdata, NULL) == S_OK)
{
IAdviseSink_OnRename(statdata.pAdvSink, pmk);
IAdviseSink_Release(statdata.pAdvSink);
}
IEnumSTATDATA_Release(pEnum);
}
return hr;
}
/******************************************************************************
* OleAdviseHolderImpl_SendOnSave
*/
static HRESULT WINAPI OleAdviseHolderImpl_SendOnSave(IOleAdviseHolder *iface)
{
IEnumSTATDATA *pEnum;
HRESULT hr;
TRACE("(%p)->()\n", iface);
hr = IOleAdviseHolder_EnumAdvise(iface, &pEnum);
if (SUCCEEDED(hr))
{
STATDATA statdata;
while (IEnumSTATDATA_Next(pEnum, 1, &statdata, NULL) == S_OK)
{
IAdviseSink_OnSave(statdata.pAdvSink);
IAdviseSink_Release(statdata.pAdvSink);
}
IEnumSTATDATA_Release(pEnum);
}
return hr;
}
/******************************************************************************
* OleAdviseHolderImpl_SendOnClose
*/
static HRESULT WINAPI OleAdviseHolderImpl_SendOnClose(IOleAdviseHolder *iface)
{
IEnumSTATDATA *pEnum;
HRESULT hr;
TRACE("(%p)->()\n", iface);
hr = IOleAdviseHolder_EnumAdvise(iface, &pEnum);
if (SUCCEEDED(hr))
{
STATDATA statdata;
while (IEnumSTATDATA_Next(pEnum, 1, &statdata, NULL) == S_OK)
{
IAdviseSink_OnClose(statdata.pAdvSink);
IAdviseSink_Release(statdata.pAdvSink);
}
IEnumSTATDATA_Release(pEnum);
}
return hr;
}
/**************************************************************************
* OleAdviseHolderImpl_VTable
*/
static const IOleAdviseHolderVtbl oahvt =
{
OleAdviseHolderImpl_QueryInterface,
OleAdviseHolderImpl_AddRef,
OleAdviseHolderImpl_Release,
OleAdviseHolderImpl_Advise,
OleAdviseHolderImpl_Unadvise,
OleAdviseHolderImpl_EnumAdvise,
OleAdviseHolderImpl_SendOnRename,
OleAdviseHolderImpl_SendOnSave,
OleAdviseHolderImpl_SendOnClose
};
/**************************************************************************
* OleAdviseHolderImpl_Constructor
*/
static IOleAdviseHolder *OleAdviseHolderImpl_Constructor(void)
{
OleAdviseHolderImpl* lpoah;
lpoah = HeapAlloc(GetProcessHeap(), 0, sizeof(OleAdviseHolderImpl));
lpoah->IOleAdviseHolder_iface.lpVtbl = &oahvt;
lpoah->ref = 1;
lpoah->max_cons = INITIAL_SINKS;
lpoah->connections = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
lpoah->max_cons * sizeof(*lpoah->connections));
TRACE("returning %p\n", &lpoah->IOleAdviseHolder_iface);
return &lpoah->IOleAdviseHolder_iface;
}
/**************************************************************************
* DataAdviseHolder Implementation
*/
typedef struct
{
IDataAdviseHolder IDataAdviseHolder_iface;
LONG ref;
DWORD maxCons;
STATDATA* connections;
DWORD* remote_connections;
IDataObject* delegate;
} DataAdviseHolder;
/* this connection has also has been advised to the delegate data object */
#define WINE_ADVF_REMOTE 0x80000000
static inline DataAdviseHolder *impl_from_IDataAdviseHolder(IDataAdviseHolder *iface)
{
return CONTAINING_RECORD(iface, DataAdviseHolder, IDataAdviseHolder_iface);
}
/******************************************************************************
* DataAdviseHolder_Destructor
*/
static void DataAdviseHolder_Destructor(DataAdviseHolder* ptrToDestroy)
{
DWORD index;
TRACE("%p\n", ptrToDestroy);
for (index = 0; index < ptrToDestroy->maxCons; index++)
{
if (ptrToDestroy->connections[index].pAdvSink != NULL)
{
if (ptrToDestroy->delegate &&
(ptrToDestroy->connections[index].advf & WINE_ADVF_REMOTE))
IDataObject_DUnadvise(ptrToDestroy->delegate,
ptrToDestroy->remote_connections[index]);
release_statdata(ptrToDestroy->connections + index);
}
}
HeapFree(GetProcessHeap(), 0, ptrToDestroy->remote_connections);
HeapFree(GetProcessHeap(), 0, ptrToDestroy->connections);
HeapFree(GetProcessHeap(), 0, ptrToDestroy);
}
/************************************************************************
* DataAdviseHolder_QueryInterface (IUnknown)
*/
static HRESULT WINAPI DataAdviseHolder_QueryInterface(IDataAdviseHolder *iface,
REFIID riid, void **ppvObject)
{
DataAdviseHolder *This = impl_from_IDataAdviseHolder(iface);
TRACE("(%p)->(%s,%p)\n",This,debugstr_guid(riid),ppvObject);
if ( (This==0) || (ppvObject==0) )
return E_INVALIDARG;
*ppvObject = 0;
if ( IsEqualIID(&IID_IUnknown, riid) ||
IsEqualIID(&IID_IDataAdviseHolder, riid) )
{
*ppvObject = iface;
}
if ((*ppvObject)==0)
{
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown*)*ppvObject);
return S_OK;
}
/************************************************************************
* DataAdviseHolder_AddRef (IUnknown)
*/
static ULONG WINAPI DataAdviseHolder_AddRef(IDataAdviseHolder *iface)
{
DataAdviseHolder *This = impl_from_IDataAdviseHolder(iface);
TRACE("(%p) (ref=%d)\n", This, This->ref);
return InterlockedIncrement(&This->ref);
}
/************************************************************************
* DataAdviseHolder_Release (IUnknown)
*/
static ULONG WINAPI DataAdviseHolder_Release(IDataAdviseHolder *iface)
{
DataAdviseHolder *This = impl_from_IDataAdviseHolder(iface);
ULONG ref;
TRACE("(%p) (ref=%d)\n", This, This->ref);
ref = InterlockedDecrement(&This->ref);
if (ref==0) DataAdviseHolder_Destructor(This);
return ref;
}
/************************************************************************
* DataAdviseHolder_Advise
*
*/
static HRESULT WINAPI DataAdviseHolder_Advise(IDataAdviseHolder *iface,
IDataObject *pDataObject, FORMATETC *pFetc,
DWORD advf, IAdviseSink *pAdvise,
DWORD *pdwConnection)
{
DWORD index;
STATDATA new_conn;
DataAdviseHolder *This = impl_from_IDataAdviseHolder(iface);
TRACE("(%p)->(%p, %p, %08x, %p, %p)\n", This, pDataObject, pFetc, advf,
pAdvise, pdwConnection);
if (pdwConnection==NULL)
return E_POINTER;
*pdwConnection = 0;
for (index = 0; index < This->maxCons; index++)
{
if (This->connections[index].pAdvSink == NULL)
break;
}
if (index == This->maxCons)
{
This->maxCons+=INITIAL_SINKS;
This->connections = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
This->connections,
This->maxCons * sizeof(*This->connections));
This->remote_connections = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
This->remote_connections,
This->maxCons * sizeof(*This->remote_connections));
}
new_conn.pAdvSink = pAdvise;
new_conn.advf = advf & ~WINE_ADVF_REMOTE;
new_conn.formatetc = *pFetc;
new_conn.dwConnection = index + 1; /* 0 is not a valid cookie, so increment the index */
copy_statdata(This->connections + index, &new_conn);
if (This->connections[index].pAdvSink != NULL)
{
/* if we are already connected advise the remote object */
if (This->delegate)
{
HRESULT hr;
hr = IDataObject_DAdvise(This->delegate, &new_conn.formatetc,
new_conn.advf, new_conn.pAdvSink,
&This->remote_connections[index]);
if (FAILED(hr))
{
IDataAdviseHolder_Unadvise(iface, new_conn.dwConnection);
return hr;
}
This->connections[index].advf |= WINE_ADVF_REMOTE;
}
else if(advf & ADVF_PRIMEFIRST)
/* only do this if we have no delegate, since in the above case the
* delegate will do the priming for us */
IDataAdviseHolder_SendOnDataChange(iface, pDataObject, 0, advf);
}
*pdwConnection = new_conn.dwConnection;
return S_OK;
}
/******************************************************************************
* DataAdviseHolder_Unadvise
*/
static HRESULT WINAPI DataAdviseHolder_Unadvise(IDataAdviseHolder *iface,
DWORD dwConnection)
{
DataAdviseHolder *This = impl_from_IDataAdviseHolder(iface);
DWORD index;
TRACE("(%p)->(%u)\n", This, dwConnection);
/* The connection number is 1 more than the index, see DataAdviseHolder_Advise */
index = dwConnection - 1;
if (index >= This->maxCons || This->connections[index].pAdvSink == NULL)
return OLE_E_NOCONNECTION;
if (This->delegate && This->connections[index].advf & WINE_ADVF_REMOTE)
{
IDataObject_DUnadvise(This->delegate, This->remote_connections[index]);
This->remote_connections[index] = 0;
}
release_statdata(This->connections + index);
return S_OK;
}
/******************************************************************************
* DataAdviseHolder_EnumAdvise
*/
static HRESULT WINAPI DataAdviseHolder_EnumAdvise(IDataAdviseHolder *iface,
IEnumSTATDATA **enum_advise)
{
DataAdviseHolder *This = impl_from_IDataAdviseHolder(iface);
IUnknown *unk;
HRESULT hr;
TRACE("(%p)->(%p)\n", This, enum_advise);
IDataAdviseHolder_QueryInterface(iface, &IID_IUnknown, (void**)&unk);
hr = EnumSTATDATA_Construct(unk, 0, This->maxCons, This->connections, enum_advise);
IUnknown_Release(unk);
return hr;
}
/******************************************************************************
* DataAdviseHolder_SendOnDataChange
*/
static HRESULT WINAPI DataAdviseHolder_SendOnDataChange(IDataAdviseHolder *iface,
IDataObject *data_obj,
DWORD dwReserved, DWORD advf)
{
IEnumSTATDATA *pEnum;
HRESULT hr;
TRACE("(%p)->(%p, %08x, %08x)\n", iface, data_obj, dwReserved, advf);
hr = IDataAdviseHolder_EnumAdvise(iface, &pEnum);
if (SUCCEEDED(hr))
{
STATDATA statdata;
while (IEnumSTATDATA_Next(pEnum, 1, &statdata, NULL) == S_OK)
{
STGMEDIUM stg;
stg.tymed = TYMED_NULL;
stg.u.pstg = NULL;
stg.pUnkForRelease = NULL;
if(!(statdata.advf & ADVF_NODATA))
{
hr = IDataObject_GetData(data_obj, &statdata.formatetc, &stg);
}
IAdviseSink_OnDataChange(statdata.pAdvSink, &statdata.formatetc, &stg);
if(statdata.advf & ADVF_ONLYONCE)
{
IDataAdviseHolder_Unadvise(iface, statdata.dwConnection);
}
release_statdata(&statdata);
}
IEnumSTATDATA_Release(pEnum);
}
return S_OK;
}
/**************************************************************************
* DataAdviseHolderImpl_VTable
*/
static const IDataAdviseHolderVtbl DataAdviseHolderImpl_VTable =
{
DataAdviseHolder_QueryInterface,
DataAdviseHolder_AddRef,
DataAdviseHolder_Release,
DataAdviseHolder_Advise,
DataAdviseHolder_Unadvise,
DataAdviseHolder_EnumAdvise,
DataAdviseHolder_SendOnDataChange
};
HRESULT DataAdviseHolder_OnConnect(IDataAdviseHolder *iface, IDataObject *pDelegate)
{
DataAdviseHolder *This = impl_from_IDataAdviseHolder(iface);
DWORD index;
HRESULT hr = S_OK;
for(index = 0; index < This->maxCons; index++)
{
if(This->connections[index].pAdvSink != NULL)
{
hr = IDataObject_DAdvise(pDelegate, &This->connections[index].formatetc,
This->connections[index].advf,
This->connections[index].pAdvSink,
&This->remote_connections[index]);
if (FAILED(hr)) break;
This->connections[index].advf |= WINE_ADVF_REMOTE;
}
}
This->delegate = pDelegate;
return hr;
}
void DataAdviseHolder_OnDisconnect(IDataAdviseHolder *iface)
{
DataAdviseHolder *This = impl_from_IDataAdviseHolder(iface);
DWORD index;
for(index = 0; index < This->maxCons; index++)
{
if((This->connections[index].pAdvSink != NULL) &&
(This->connections[index].advf & WINE_ADVF_REMOTE))
{
IDataObject_DUnadvise(This->delegate, This->remote_connections[index]);
This->remote_connections[index] = 0;
This->connections[index].advf &= ~WINE_ADVF_REMOTE;
}
}
This->delegate = NULL;
}
/******************************************************************************
* DataAdviseHolder_Constructor
*/
static IDataAdviseHolder *DataAdviseHolder_Constructor(void)
{
DataAdviseHolder* newHolder;
newHolder = HeapAlloc(GetProcessHeap(), 0, sizeof(DataAdviseHolder));
newHolder->IDataAdviseHolder_iface.lpVtbl = &DataAdviseHolderImpl_VTable;
newHolder->ref = 1;
newHolder->maxCons = INITIAL_SINKS;
newHolder->connections = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
newHolder->maxCons * sizeof(*newHolder->connections));
newHolder->remote_connections = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
newHolder->maxCons * sizeof(*newHolder->remote_connections));
newHolder->delegate = NULL;
TRACE("returning %p\n", &newHolder->IDataAdviseHolder_iface);
return &newHolder->IDataAdviseHolder_iface;
}
/***********************************************************************
* API functions
*/
/***********************************************************************
* CreateOleAdviseHolder [OLE32.@]
*/
HRESULT WINAPI CreateOleAdviseHolder(IOleAdviseHolder **ppOAHolder)
{
TRACE("(%p)\n", ppOAHolder);
if (ppOAHolder==NULL)
return E_POINTER;
*ppOAHolder = OleAdviseHolderImpl_Constructor ();
if (*ppOAHolder != NULL)
return S_OK;
return E_OUTOFMEMORY;
}
/******************************************************************************
* CreateDataAdviseHolder [OLE32.@]
*/
HRESULT WINAPI CreateDataAdviseHolder(IDataAdviseHolder **ppDAHolder)
{
TRACE("(%p)\n", ppDAHolder);
if (ppDAHolder==NULL)
return E_POINTER;
*ppDAHolder = DataAdviseHolder_Constructor();
if (*ppDAHolder != NULL)
return S_OK;
return E_OUTOFMEMORY;
}
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