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Sweden-Number/dlls/shell32/shlfolder.c

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/*
* Shell Folder stuff
*
* Copyright 1997 Marcus Meissner
* Copyright 1998, 1999, 2002 Juergen Schmied
*
* IShellFolder2 and related interfaces
*
* 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
*/
#include "config.h"
#include "wine/port.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "winerror.h"
#include "winbase.h"
#include "winreg.h"
#include "ole2.h"
#include "shlguid.h"
#include "pidl.h"
#include "undocshell.h"
#include "shell32_main.h"
#include "shresdef.h"
#include "shlwapi.h"
#include "shellfolder.h"
#include "wine/debug.h"
#include "debughlp.h"
#include "shfldr.h"
WINE_DEFAULT_DEBUG_CHANNEL (shell);
/***************************************************************************
* debughelper: print out the return adress
* helps especially to track down unbalanced AddRef/Release
*/
#define MEM_DEBUG 0
#if MEM_DEBUG
#define _CALL_TRACE TRACE("called from: 0x%08x\n", *( ((UINT*)&iface)-1 ));
#else
#define _CALL_TRACE
#endif
/***************************************************************************
* GetNextElement (internal function)
*
* gets a part of a string till the first backslash
*
* PARAMETERS
* pszNext [IN] string to get the element from
* pszOut [IN] pointer to buffer whitch receives string
* dwOut [IN] length of pszOut
*
* RETURNS
* LPSTR pointer to first, not yet parsed char
*/
LPCWSTR GetNextElementW (LPCWSTR pszNext, LPWSTR pszOut, DWORD dwOut)
{
LPCWSTR pszTail = pszNext;
DWORD dwCopy;
TRACE ("(%s %p 0x%08lx)\n", debugstr_w (pszNext), pszOut, dwOut);
*pszOut = 0x0000;
if (!pszNext || !*pszNext)
return NULL;
while (*pszTail && (*pszTail != (WCHAR) '\\'))
pszTail++;
dwCopy = (WCHAR *) pszTail - (WCHAR *) pszNext + 1;
lstrcpynW (pszOut, pszNext, (dwOut < dwCopy) ? dwOut : dwCopy);
if (*pszTail)
pszTail++;
else
pszTail = NULL;
TRACE ("--(%s %s 0x%08lx %p)\n", debugstr_w (pszNext), debugstr_w (pszOut), dwOut, pszTail);
return pszTail;
}
HRESULT SHELL32_ParseNextElement (HWND hwndOwner,
IShellFolder2 * psf,
LPITEMIDLIST * pidlInOut, LPOLESTR szNext, DWORD * pEaten, DWORD * pdwAttributes)
{
HRESULT hr = E_OUTOFMEMORY;
LPITEMIDLIST pidlOut = NULL,
pidlTemp = NULL;
IShellFolder *psfChild;
TRACE ("(%p, %p, %s)\n", psf, pidlInOut ? *pidlInOut : NULL, debugstr_w (szNext));
/* get the shellfolder for the child pidl and let it analyse further */
hr = IShellFolder_BindToObject (psf, *pidlInOut, NULL, &IID_IShellFolder, (LPVOID *) & psfChild);
if (SUCCEEDED (hr)) {
hr = IShellFolder_ParseDisplayName (psfChild, hwndOwner, NULL, szNext, pEaten, &pidlOut, pdwAttributes);
IShellFolder_Release (psfChild);
pidlTemp = ILCombine (*pidlInOut, pidlOut);
if (pidlOut)
ILFree (pidlOut);
}
ILFree (*pidlInOut);
*pidlInOut = pidlTemp;
TRACE ("-- pidl=%p ret=0x%08lx\n", pidlInOut ? *pidlInOut : NULL, hr);
return hr;
}
/***********************************************************************
* SHELL32_CoCreateInitSF
*
* Creates a shell folder and initializes it with a pidl via IPersistFolder.
* This function is meant for virtual forders not backed by a file system
* folder.
*/
HRESULT SHELL32_CoCreateInitSF (LPITEMIDLIST pidlRoot,
LPITEMIDLIST pidlChild, REFCLSID clsid, REFIID iid, LPVOID * ppvOut)
{
HRESULT hr;
TRACE ("%p %p\n", pidlRoot, pidlChild);
if (SUCCEEDED ((hr = SHCoCreateInstance (NULL, clsid, NULL, iid, ppvOut)))) {
IPersistFolder *pPF;
if (SUCCEEDED ((hr = IUnknown_QueryInterface ((IUnknown *) * ppvOut, &IID_IPersistFolder, (LPVOID *) & pPF)))) {
LPITEMIDLIST pidlAbsolute;
pidlAbsolute = ILCombine (pidlRoot, pidlChild);
IPersistFolder_Initialize (pPF, pidlAbsolute);
IPersistFolder_Release (pPF);
SHFree (pidlAbsolute);
}
}
TRACE ("-- (%p) ret=0x%08lx\n", *ppvOut, hr);
return hr;
}
/***********************************************************************
* SHELL32_CoCreateInitSFEx
*
* Creates a shell folder and initializes it with a pidl and a root folder
* via IPersistFolder3.
* This function is meant for virtual forders backed by a file system
* folder.
*
* NOTES
* pathRoot can be NULL for Folders beeing a drive.
* In this case the absolute path is build from pidlChild (eg. C:)
*/
HRESULT SHELL32_CoCreateInitSFEx (LPITEMIDLIST pidlRoot,
LPCSTR pathRoot, LPITEMIDLIST pidlChild, REFCLSID clsid, REFIID riid, LPVOID * ppvOut)
{
HRESULT hr;
IPersistFolder3 *ppf;
TRACE ("%p %s %p\n", pidlRoot, pathRoot, pidlChild);
if (SUCCEEDED ((hr = SHCoCreateInstance (NULL, &CLSID_ShellFSFolder, NULL, riid, ppvOut)))) {
if (SUCCEEDED (IUnknown_QueryInterface ((IUnknown *) * ppvOut, &IID_IPersistFolder3, (LPVOID *) & ppf))) {
PERSIST_FOLDER_TARGET_INFO ppfti;
LPITEMIDLIST pidlAbsolute;
char szDestPath[MAX_PATH];
ZeroMemory (&ppfti, sizeof (ppfti));
/* combine pidls */
pidlAbsolute = ILCombine (pidlRoot, pidlChild);
/* build path */
if (pathRoot) {
lstrcpyA (szDestPath, pathRoot);
PathAddBackslashA(szDestPath); /* FIXME: why have drives a backslash here ? */
} else {
szDestPath[0] = '\0';
}
lstrcatA (szDestPath, _ILGetTextPointer (pidlChild));
/* fill the PERSIST_FOLDER_TARGET_INFO */
ppfti.dwAttributes = -1;
ppfti.csidl = -1;
MultiByteToWideChar (CP_ACP, 0, szDestPath, -1, ppfti.szTargetParsingName, MAX_PATH);
IPersistFolder3_InitializeEx (ppf, NULL, pidlAbsolute, &ppfti);
IPersistFolder3_Release (ppf);
ILFree (pidlAbsolute);
}
}
TRACE ("-- (%p) ret=0x%08lx\n", *ppvOut, hr);
return hr;
}
/***********************************************************************
* SHELL32_BindToChild
*
* Common code for IShellFolder_BindToObject.
* Creates a shell folder by binding to a root pidl.
*/
HRESULT SHELL32_BindToChild (LPCITEMIDLIST pidlRoot,
LPCSTR pathRoot, LPCITEMIDLIST pidlComplete, REFIID riid, LPVOID * ppvOut)
{
GUID const *clsid;
IShellFolder *pSF;
HRESULT hr;
LPITEMIDLIST pidlChild;
if (!pidlRoot || !ppvOut)
return E_INVALIDARG;
*ppvOut = NULL;
pidlChild = ILCloneFirst (pidlComplete);
if ((clsid = _ILGetGUIDPointer (pidlChild))) {
/* virtual folder */
hr = SHELL32_CoCreateInitSF (pidlRoot, pidlChild, clsid, &IID_IShellFolder, (LPVOID *) & pSF);
} else {
/* file system folder */
hr = SHELL32_CoCreateInitSFEx (pidlRoot, pathRoot, pidlChild, &CLSID_ShellFSFolder, &IID_IShellFolder,
(LPVOID *) & pSF);
}
ILFree (pidlChild);
if (SUCCEEDED (hr)) {
if (_ILIsPidlSimple (pidlComplete)) {
/* no sub folders */
hr = IShellFolder_QueryInterface (pSF, riid, ppvOut);
} else {
/* go deeper */
hr = IShellFolder_BindToObject (pSF, ILGetNext (pidlComplete), NULL, riid, ppvOut);
}
IShellFolder_Release (pSF);
}
TRACE ("-- returning (%p) %08lx\n", *ppvOut, hr);
return hr;
}
/***********************************************************************
* SHELL32_GetDisplayNameOfChild
*
* Retrives the display name of a child object of a shellfolder.
*
* For a pidl eg. [subpidl1][subpidl2][subpidl3]:
* - it binds to the child shellfolder [subpidl1]
* - asks it for the displayname of [subpidl2][subpidl3]
*
* Is possible the pidl is a simple pidl. In this case it asks the
* subfolder for the displayname of a empty pidl. The subfolder
* returns the own displayname eg. "::{guid}". This is used for
* virtual folders with the registry key WantsFORPARSING set.
*/
HRESULT SHELL32_GetDisplayNameOfChild (IShellFolder2 * psf,
LPCITEMIDLIST pidl, DWORD dwFlags, LPSTR szOut, DWORD dwOutLen)
{
LPITEMIDLIST pidlFirst;
HRESULT hr = E_OUTOFMEMORY;
TRACE ("(%p)->(pidl=%p 0x%08lx %p 0x%08lx)\n", psf, pidl, dwFlags, szOut, dwOutLen);
pdump (pidl);
pidlFirst = ILCloneFirst (pidl);
if (pidlFirst) {
IShellFolder2 *psfChild;
hr = IShellFolder_BindToObject (psf, pidlFirst, NULL, &IID_IShellFolder, (LPVOID *) & psfChild);
if (SUCCEEDED (hr)) {
STRRET strTemp;
LPITEMIDLIST pidlNext = ILGetNext (pidl);
hr = IShellFolder_GetDisplayNameOf (psfChild, pidlNext, dwFlags, &strTemp);
if (SUCCEEDED (hr)) {
hr = StrRetToStrNA (szOut, dwOutLen, &strTemp, pidlNext);
}
IShellFolder_Release (psfChild);
}
ILFree (pidlFirst);
}
TRACE ("-- ret=0x%08lx %s\n", hr, szOut);
return hr;
}
/***********************************************************************
* SHELL32_GetItemAttributes
*
* NOTES
* observerd values:
* folder: 0xE0000177 FILESYSTEM | HASSUBFOLDER | FOLDER
* file: 0x40000177 FILESYSTEM
* drive: 0xf0000144 FILESYSTEM | HASSUBFOLDER | FOLDER | FILESYSANCESTOR
* mycomputer: 0xb0000154 HASSUBFOLDER | FOLDER | FILESYSANCESTOR
* (seems to be default for shell extensions if no registry entry exists)
*
* This functions does not set flags!! It only resets flags when nessesary.
*/
HRESULT SHELL32_GetItemAttributes (IShellFolder * psf, LPITEMIDLIST pidl, LPDWORD pdwAttributes)
{
GUID const *clsid;
DWORD dwAttributes;
TRACE ("0x%08lx\n", *pdwAttributes);
if (*pdwAttributes & (0xcff3fe88))
WARN ("attribute 0x%08lx not implemented\n", *pdwAttributes);
*pdwAttributes &= ~SFGAO_LINK; /* FIXME: for native filedialogs */
if (_ILIsDrive (pidl)) {
*pdwAttributes &= 0xf0000144;
} else if ((clsid = _ILGetGUIDPointer (pidl))) {
if (HCR_GetFolderAttributes (clsid, &dwAttributes)) {
*pdwAttributes &= dwAttributes;
} else {
*pdwAttributes &= 0xb0000154;
}
} else if (_ILGetDataPointer (pidl)) {
dwAttributes = _ILGetFileAttributes (pidl, NULL, 0);
*pdwAttributes &= ~SFGAO_FILESYSANCESTOR;
if ((SFGAO_FOLDER & *pdwAttributes) && !(dwAttributes & FILE_ATTRIBUTE_DIRECTORY))
*pdwAttributes &= ~(SFGAO_FOLDER | SFGAO_HASSUBFOLDER);
if ((SFGAO_HIDDEN & *pdwAttributes) && !(dwAttributes & FILE_ATTRIBUTE_HIDDEN))
*pdwAttributes &= ~SFGAO_HIDDEN;
if ((SFGAO_READONLY & *pdwAttributes) && !(dwAttributes & FILE_ATTRIBUTE_READONLY))
*pdwAttributes &= ~SFGAO_READONLY;
} else {
*pdwAttributes &= 0xb0000154;
}
TRACE ("-- 0x%08lx\n", *pdwAttributes);
return S_OK;
}
/***********************************************************************
* SHELL32_GetItemAttributes
*/
HRESULT SHELL32_CompareIDs (IShellFolder * iface, LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
{
int type1,
type2;
char szTemp1[MAX_PATH];
char szTemp2[MAX_PATH];
int nReturn = 0;
LPITEMIDLIST firstpidl,
nextpidl1,
nextpidl2;
IShellFolder *psf;
/* test for empty pidls */
BOOL isEmpty1 = _ILIsDesktop (pidl1);
BOOL isEmpty2 = _ILIsDesktop (pidl2);
if (isEmpty1 && isEmpty2)
return 0;
if (isEmpty1)
return -1;
if (isEmpty2)
return 1;
/* test for different types. Sort order is the PT_* constant */
type1 = _ILGetDataPointer (pidl1)->type;
type2 = _ILGetDataPointer (pidl2)->type;
if (type1 != type2)
return (type1 - type2);
/* test for name of pidl */
_ILSimpleGetText (pidl1, szTemp1, MAX_PATH);
_ILSimpleGetText (pidl2, szTemp2, MAX_PATH);
nReturn = strcasecmp (szTemp1, szTemp2);
if (nReturn != 0)
return nReturn;
/* test of complex pidls */
firstpidl = ILCloneFirst (pidl1);
nextpidl1 = ILGetNext (pidl1);
nextpidl2 = ILGetNext (pidl2);
/* optimizing: test special cases and bind not deeper */
/* the deeper shellfolder would do the same */
isEmpty1 = _ILIsDesktop (nextpidl1);
isEmpty2 = _ILIsDesktop (nextpidl2);
if (isEmpty1 && isEmpty2) {
nReturn = 0;
} else if (isEmpty1) {
nReturn = -1;
} else if (isEmpty2) {
nReturn = 1;
/* optimizing end */
} else if (SUCCEEDED (IShellFolder_BindToObject (iface, firstpidl, NULL, &IID_IShellFolder, (LPVOID *) & psf))) {
nReturn = IShellFolder_CompareIDs (psf, lParam, nextpidl1, nextpidl2);
IShellFolder_Release (psf);
}
ILFree (firstpidl);
return nReturn;
}
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