Sweden-Number/dlls/quartz/enummoniker.c

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2003-07-01 06:29:48 +02:00
/*
* IEnumMoniker implementation
*
* Copyright 2003 Robert Shearman
*
* This file contains the (internal) driver registration functions,
* driver enumeration APIs and DirectDraw creation functions.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define COM_NO_WINDOWS_H
#include "ole2.h"
#include "strmif.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(quartz);
typedef struct EnumMonikerImpl
{
ICOM_VFIELD(IEnumMoniker);
ULONG ref;
IMoniker ** ppMoniker;
ULONG nMonikerCount;
ULONG index;
} EnumMonikerImpl;
static struct ICOM_VTABLE(IEnumMoniker) EnumMonikerImpl_Vtbl;
static ULONG WINAPI EnumMonikerImpl_AddRef(LPENUMMONIKER iface);
HRESULT EnumMonikerImpl_Create(IMoniker ** ppMoniker, ULONG nMonikerCount, IEnumMoniker ** ppEnum)
{
/* NOTE: assumes that array of IMonikers has already been AddRef'd
* I.e. this function does not AddRef the array of incoming
* IMonikers */
EnumMonikerImpl * pemi = CoTaskMemAlloc(sizeof(EnumMonikerImpl));
TRACE("(%p, %ld, %p)\n", ppMoniker, nMonikerCount, ppEnum);
*ppEnum = NULL;
if (!pemi)
return E_OUTOFMEMORY;
pemi->lpVtbl = &EnumMonikerImpl_Vtbl;
pemi->ref = 1;
pemi->ppMoniker = CoTaskMemAlloc(nMonikerCount * sizeof(IMoniker*));
memcpy(pemi->ppMoniker, ppMoniker, nMonikerCount*sizeof(IMoniker*));
pemi->nMonikerCount = nMonikerCount;
pemi->index = 0;
*ppEnum = (IEnumMoniker *)pemi;
return S_OK;
}
/**********************************************************************
* IEnumMoniker_QueryInterface (also IUnknown)
*/
static HRESULT WINAPI EnumMonikerImpl_QueryInterface(
LPENUMMONIKER iface,
REFIID riid,
LPVOID *ppvObj)
{
ICOM_THIS(EnumMonikerImpl, iface);
TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));
if (This == NULL || ppvObj == NULL) return E_POINTER;
if (IsEqualGUID(riid, &IID_IUnknown) ||
IsEqualGUID(riid, &IID_IEnumMoniker))
{
*ppvObj = (LPVOID)iface;
EnumMonikerImpl_AddRef(iface);
return S_OK;
}
FIXME("- no interface\n\tIID:\t%s\n", debugstr_guid(riid));
return E_NOINTERFACE;
}
/**********************************************************************
* IEnumMoniker_AddRef (also IUnknown)
*/
static ULONG WINAPI EnumMonikerImpl_AddRef(LPENUMMONIKER iface)
{
ICOM_THIS(EnumMonikerImpl, iface);
TRACE("\n");
if (This == NULL) return E_POINTER;
return InterlockedIncrement(&This->ref);
}
/**********************************************************************
* IEnumMoniker_Release (also IUnknown)
*/
static ULONG WINAPI EnumMonikerImpl_Release(LPENUMMONIKER iface)
{
ICOM_THIS(EnumMonikerImpl, iface);
TRACE("\n");
if (!InterlockedDecrement(&This->ref))
{
CoTaskMemFree(This->ppMoniker);
This->ppMoniker = NULL;
CoTaskMemFree(This);
return 0;
}
return This->ref;
}
static HRESULT WINAPI EnumMonikerImpl_Next(LPENUMMONIKER iface, ULONG celt, IMoniker ** rgelt, ULONG * pceltFetched)
{
ULONG fetched;
ICOM_THIS(EnumMonikerImpl, iface);
TRACE("(%ld, %p, %p)\n", celt, rgelt, pceltFetched);
for (fetched = 0; (This->index + fetched < This->nMonikerCount) && (fetched < celt); fetched++)
{
rgelt[fetched] = This->ppMoniker[This->index + fetched];
IMoniker_AddRef(rgelt[fetched]);
}
This->index += fetched;
if (pceltFetched)
*pceltFetched = fetched;
if (fetched != celt)
return S_FALSE;
else
return S_OK;
}
static HRESULT WINAPI EnumMonikerImpl_Skip(LPENUMMONIKER iface, ULONG celt)
{
ICOM_THIS(EnumMonikerImpl, iface);
TRACE("(%ld)\n", celt);
This->index += celt;
return S_OK;
}
static HRESULT WINAPI EnumMonikerImpl_Reset(LPENUMMONIKER iface)
{
ICOM_THIS(EnumMonikerImpl, iface);
TRACE("()\n");
This->index = 0;
return S_OK;
}
static HRESULT WINAPI EnumMonikerImpl_Clone(LPENUMMONIKER iface, IEnumMoniker ** ppenum)
{
FIXME("(%p): stub\n", ppenum);
return E_NOTIMPL;
}
/**********************************************************************
* IEnumMoniker_Vtbl
*/
static ICOM_VTABLE(IEnumMoniker) EnumMonikerImpl_Vtbl =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
EnumMonikerImpl_QueryInterface,
EnumMonikerImpl_AddRef,
EnumMonikerImpl_Release,
EnumMonikerImpl_Next,
EnumMonikerImpl_Skip,
EnumMonikerImpl_Reset,
EnumMonikerImpl_Clone
};