Sweden-Number/dlls/shell32/enumidlist.c

308 lines
8.0 KiB
C

/*
* IEnumIDList
*
* Copyright 1998 Juergen Schmied <juergen.schmied@metronet.de>
*
* 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 <stdlib.h>
#include <string.h>
#define COBJMACROS
#include "wine/debug.h"
#include "windef.h"
#include "winbase.h"
#include "winreg.h"
#include "shlwapi.h"
#include "pidl.h"
#include "shell32_main.h"
WINE_DEFAULT_DEBUG_CHANNEL(shell);
/**************************************************************************
* AddToEnumList()
*/
BOOL AddToEnumList(IEnumIDListImpl *list, LPITEMIDLIST pidl)
{
struct pidl_enum_entry *pidl_entry;
TRACE("(%p)->(pidl=%p)\n", list, pidl);
if (!list || !pidl)
return FALSE;
if (!(pidl_entry = SHAlloc(sizeof(*pidl_entry))))
return FALSE;
pidl_entry->pidl = pidl;
list_add_tail(&list->pidls, &pidl_entry->entry);
if (!list->current)
list->current = list_head(&list->pidls);
return TRUE;
}
/**************************************************************************
* CreateFolderEnumList()
*/
BOOL CreateFolderEnumList(IEnumIDListImpl *list, LPCWSTR lpszPath, DWORD dwFlags)
{
LPITEMIDLIST pidl=NULL;
WIN32_FIND_DATAW stffile;
HANDLE hFile;
WCHAR szPath[MAX_PATH];
BOOL succeeded = TRUE;
TRACE("(%p)->(path=%s flags=0x%08x)\n", list, debugstr_w(lpszPath), dwFlags);
if(!lpszPath || !lpszPath[0]) return FALSE;
lstrcpyW(szPath, lpszPath);
PathAddBackslashW(szPath);
lstrcatW(szPath,L"*");
hFile = FindFirstFileW(szPath,&stffile);
if ( hFile != INVALID_HANDLE_VALUE )
{
BOOL findFinished = FALSE;
do
{
if ( !(stffile.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN)
|| (dwFlags & SHCONTF_INCLUDEHIDDEN) )
{
if ( (stffile.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) &&
dwFlags & SHCONTF_FOLDERS &&
wcscmp(stffile.cFileName, L".") && wcscmp(stffile.cFileName, L".."))
{
pidl = _ILCreateFromFindDataW(&stffile);
succeeded = succeeded && AddToEnumList(list, pidl);
}
else if (!(stffile.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
&& dwFlags & SHCONTF_NONFOLDERS)
{
pidl = _ILCreateFromFindDataW(&stffile);
succeeded = succeeded && AddToEnumList(list, pidl);
}
}
if (succeeded)
{
if (!FindNextFileW(hFile, &stffile))
{
if (GetLastError() == ERROR_NO_MORE_FILES)
findFinished = TRUE;
else
succeeded = FALSE;
}
}
} while (succeeded && !findFinished);
FindClose(hFile);
}
return succeeded;
}
static inline IEnumIDListImpl *impl_from_IEnumIDList(IEnumIDList *iface)
{
return CONTAINING_RECORD(iface, IEnumIDListImpl, IEnumIDList_iface);
}
/**************************************************************************
* IEnumIDList::QueryInterface
*/
static HRESULT WINAPI IEnumIDList_fnQueryInterface(IEnumIDList *iface, REFIID riid, void **ppvObj)
{
IEnumIDListImpl *This = impl_from_IEnumIDList(iface);
TRACE("(%p)->(%s, %p)\n", This, debugstr_guid(riid), ppvObj);
*ppvObj = NULL;
if (IsEqualIID(riid, &IID_IUnknown) ||
IsEqualIID(riid, &IID_IEnumIDList))
{
*ppvObj = &This->IEnumIDList_iface;
}
if (*ppvObj)
{
IUnknown_AddRef((IUnknown*)*ppvObj);
return S_OK;
}
WARN("interface %s is not supported\n", debugstr_guid(riid));
return E_NOINTERFACE;
}
/******************************************************************************
* IEnumIDList::AddRef
*/
static ULONG WINAPI IEnumIDList_fnAddRef(IEnumIDList *iface)
{
IEnumIDListImpl *This = impl_from_IEnumIDList(iface);
ULONG refCount = InterlockedIncrement(&This->ref);
TRACE("(%p)->(%u)\n", This, refCount - 1);
return refCount;
}
/******************************************************************************
* IEnumIDList::Release
*/
static ULONG WINAPI IEnumIDList_fnRelease(IEnumIDList *iface)
{
IEnumIDListImpl *This = impl_from_IEnumIDList(iface);
ULONG refCount = InterlockedDecrement(&This->ref);
TRACE("(%p)->(%u)\n", This, refCount + 1);
if (!refCount)
{
struct pidl_enum_entry *cur, *cur2;
LIST_FOR_EACH_ENTRY_SAFE(cur, cur2, &This->pidls, struct pidl_enum_entry, entry)
{
list_remove(&cur->entry);
SHFree(cur->pidl);
SHFree(cur);
}
heap_free(This);
}
return refCount;
}
/**************************************************************************
* IEnumIDList::Next
*/
static HRESULT WINAPI IEnumIDList_fnNext(IEnumIDList *iface, ULONG celt, LPITEMIDLIST *rgelt,
ULONG *fetched)
{
IEnumIDListImpl *This = impl_from_IEnumIDList(iface);
HRESULT hr = S_OK;
ULONG i;
TRACE("(%p)->(%d, %p, %p)\n", This, celt, rgelt, fetched);
/* It is valid to leave pceltFetched NULL when celt is 1. Some of explorer's
* subsystems actually use it (and so may a third party browser)
*/
if (fetched)
*fetched = 0;
*rgelt = NULL;
if (celt > 1 && !fetched)
return E_INVALIDARG;
if (celt > 0 && !This->current)
return S_FALSE;
for (i = 0; i < celt; i++)
{
if (!This->current)
break;
rgelt[i] = ILClone(LIST_ENTRY(This->current, struct pidl_enum_entry, entry)->pidl);
This->current = list_next(&This->pidls, This->current);
}
if (fetched)
*fetched = i;
return hr;
}
/**************************************************************************
* IEnumIDList::Skip
*/
static HRESULT WINAPI IEnumIDList_fnSkip(IEnumIDList *iface, ULONG celt)
{
IEnumIDListImpl *This = impl_from_IEnumIDList(iface);
HRESULT hr = S_OK;
ULONG i;
TRACE("(%p)->(%u)\n", This, celt);
for (i = 0; i < celt; i++)
{
if (!This->current)
{
hr = S_FALSE;
break;
}
This->current = list_next(&This->pidls, This->current);
}
return hr;
}
/**************************************************************************
* IEnumIDList::Reset
*/
static HRESULT WINAPI IEnumIDList_fnReset(IEnumIDList *iface)
{
IEnumIDListImpl *This = impl_from_IEnumIDList(iface);
TRACE("(%p)\n",This);
This->current = list_head(&This->pidls);
return S_OK;
}
/**************************************************************************
* IEnumIDList::Clone
*/
static HRESULT WINAPI IEnumIDList_fnClone(IEnumIDList *iface, IEnumIDList **ppenum)
{
IEnumIDListImpl *This = impl_from_IEnumIDList(iface);
FIXME("(%p)->(%p): stub\n",This, ppenum);
return E_NOTIMPL;
}
static const IEnumIDListVtbl eidlvt =
{
IEnumIDList_fnQueryInterface,
IEnumIDList_fnAddRef,
IEnumIDList_fnRelease,
IEnumIDList_fnNext,
IEnumIDList_fnSkip,
IEnumIDList_fnReset,
IEnumIDList_fnClone,
};
IEnumIDListImpl *IEnumIDList_Constructor(void)
{
IEnumIDListImpl *lpeidl = heap_alloc(sizeof(*lpeidl));
if (lpeidl)
{
lpeidl->IEnumIDList_iface.lpVtbl = &eidlvt;
lpeidl->ref = 1;
list_init(&lpeidl->pidls);
lpeidl->current = NULL;
}
TRACE("-- (%p)->()\n",lpeidl);
return lpeidl;
}