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reactos/dll/win32/shdocvw/mrulist.cpp
Katayama Hirofumi MZ 1da71e2519
[SHDOCVW][SHDOCVW_APITEST] Implement MRU List for Shell Bag, Part 6 (#5699) 
Follow-up to #5691. Strengthen shdocvw_apitest
testcase. Fix CLSID_MruPidlList class.
CORE-9283
2023-09-18 20:13:29 +09:00

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/*
* PROJECT: ReactOS shdocvw
* LICENSE: LGPL-2.0-or-later (https://spdx.org/licenses/LGPL-2.0-or-later)
* PURPOSE: Implement MRU List of shdocvw.dll
* COPYRIGHT: Copyright 2023 Katayama Hirofumi MZ <katayama.hirofumi.mz@gmail.com>
*/
#define COBJMACROS
#include <windef.h>
#include <winbase.h>
#include <winreg.h>
#include <objbase.h>
#include <oleauto.h>
#include <shlobj.h>
#include <shlobj_undoc.h>
#include <shlguid_undoc.h>
#include <shlwapi.h>
#include <shlwapi_undoc.h>
#include <strsafe.h>
#include "shdocvw.h"
#include <wine/debug.h>
WINE_DEFAULT_DEBUG_CHANNEL(shdocvw);
class CSafeMutex;
class CMruBase;
class CMruShortList;
class CMruLongList;
class CMruNode;
class CMruPidlList;
class CMruClassFactory;
extern "C" void __cxa_pure_virtual(void)
{
ERR("__cxa_pure_virtual\n");
::DebugBreak();
}
BOOL IEILIsEqual(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2, BOOL bUnknown)
{
UINT cb1 = ILGetSize(pidl1), cb2 = ILGetSize(pidl2);
if (cb1 == cb2 && memcmp(pidl1, pidl2, cb1) == 0)
return TRUE;
FIXME("%p, %p\n", pidl1, pidl2);
return FALSE;
}
// The flags for SLOTITEMDATA.dwFlags
#define SLOT_LOADED 0x1
#define SLOT_SET 0x2
// The flags for CMruBase.m_dwFlags
#define COMPARE_BY_MEMCMP 0x0
#define COMPARE_BY_STRCMPIW 0x1
#define COMPARE_BY_STRCMPW 0x2
#define COMPARE_BY_IEILISEQUAL 0x3
#define COMPARE_BY_MASK 0xF
class CSafeMutex
{
protected:
HANDLE m_hMutex;
public:
CSafeMutex() : m_hMutex(NULL)
{
}
~CSafeMutex()
{
if (m_hMutex)
{
::ReleaseMutex(m_hMutex);
m_hMutex = NULL;
}
}
HRESULT Enter(HANDLE hMutex)
{
DWORD wait = ::WaitForSingleObject(hMutex, 500);
if (wait != WAIT_OBJECT_0)
return E_FAIL;
m_hMutex = hMutex;
return S_OK;
}
};
class CMruBase
: public IMruDataList
{
protected:
LONG m_cRefs = 1; // Reference count
DWORD m_dwFlags = 0; // The COMPARE_BY_... flags
BOOL m_bNeedSave = FALSE; // The flag that indicates whether it needs saving
BOOL m_bChecked = FALSE; // The checked flag
HKEY m_hKey = NULL; // A registry key
DWORD m_cSlotRooms = 0; // Rooms for slots
DWORD m_cSlots = 0; // The # of slots
SLOTCOMPARE m_fnCompare = NULL; // The comparison function
SLOTITEMDATA * m_pSlots = NULL; // Slot data
HRESULT _LoadItem(UINT iSlot);
HRESULT _AddItem(UINT iSlot, LPCVOID pvData, DWORD cbData);
HRESULT _GetItem(UINT iSlot, SLOTITEMDATA **ppItem);
void _DeleteItem(UINT iSlot);
HRESULT _GetSlotItem(UINT iSlot, SLOTITEMDATA **ppItem);
void _CheckUsedSlots();
HRESULT _UseEmptySlot(UINT *piSlot);
public:
CMruBase();
virtual ~CMruBase();
// IUnknown methods
STDMETHODIMP QueryInterface(REFIID riid, void **ppvObj) override;
STDMETHODIMP_(ULONG) AddRef() override
{
return ::InterlockedIncrement(&m_cRefs);
}
STDMETHODIMP_(ULONG) Release() override;
// IMruDataList methods
STDMETHODIMP InitData(UINT cCapacity, UINT flags, HKEY hKey,
LPCWSTR pszSubKey OPTIONAL,
SLOTCOMPARE fnCompare OPTIONAL) override;
STDMETHODIMP AddData(LPCVOID pvData, DWORD cbData, UINT *piSlot) override;
STDMETHODIMP FindData(LPCVOID pvData, DWORD cbData, UINT *piSlot) override;
STDMETHODIMP GetData(UINT iSlot, LPVOID pvData, DWORD cbData) override;
STDMETHODIMP QueryInfo(UINT iSlot, UINT *piGotSlot, DWORD *pcbData) override;
STDMETHODIMP Delete(UINT iSlot) override;
// Non-standard methods
virtual BOOL _IsEqual(const SLOTITEMDATA *pItem, LPCVOID pvData, UINT cbData) const;
virtual DWORD _DeleteValue(LPCWSTR pszValue);
virtual HRESULT _InitSlots() = 0;
virtual void _SaveSlots() = 0;
virtual UINT _UpdateSlots(UINT iSlot) = 0;
virtual void _SlotString(UINT iSlot, LPWSTR psz, DWORD cch) = 0;
virtual HRESULT _GetSlot(UINT iSlot, UINT *puSlot) = 0;
virtual HRESULT _RemoveSlot(UINT iSlot, UINT *puSlot) = 0;
static void* operator new(size_t size)
{
return ::LocalAlloc(LPTR, size);
}
static void operator delete(void *ptr)
{
::LocalFree(ptr);
}
};
CMruBase::CMruBase()
{
::InterlockedIncrement(&SHDOCVW_refCount);
}
CMruBase::~CMruBase()
{
if (m_hKey)
{
::RegCloseKey(m_hKey);
m_hKey = NULL;
}
if (m_pSlots)
{
for (UINT iSlot = 0; iSlot < m_cSlots; ++iSlot)
{
m_pSlots[iSlot].pvData = ::LocalFree(m_pSlots[iSlot].pvData);
}
m_pSlots = (SLOTITEMDATA*)::LocalFree(m_pSlots);
}
::InterlockedDecrement(&SHDOCVW_refCount);
}
STDMETHODIMP CMruBase::QueryInterface(REFIID riid, void **ppvObj)
{
if (!ppvObj)
return E_POINTER;
if (IsEqualGUID(riid, IID_IMruDataList) || IsEqualGUID(riid, IID_IUnknown))
{
*ppvObj = static_cast<IMruDataList*>(this);
AddRef();
return S_OK;
}
ERR("%s: E_NOINTERFACE\n", debugstr_guid(&riid));
return E_NOINTERFACE;
}
STDMETHODIMP_(ULONG) CMruBase::Release()
{
if (::InterlockedDecrement(&m_cRefs) == 0)
{
_SaveSlots();
delete this;
return 0;
}
return m_cRefs;
}
HRESULT CMruBase::_LoadItem(UINT iSlot)
{
DWORD cbData;
WCHAR szValue[12];
SLOTITEMDATA *pItem = &m_pSlots[iSlot];
_SlotString(iSlot, szValue, _countof(szValue));
if (SHGetValueW(m_hKey, NULL, szValue, NULL, NULL, &cbData) == ERROR_SUCCESS &&
cbData > 0)
{
pItem->pvData = ::LocalAlloc(LPTR, cbData);
if (pItem->pvData)
{
pItem->cbData = cbData;
if (SHGetValueW(m_hKey, NULL, szValue, NULL, pItem->pvData, &cbData) != ERROR_SUCCESS)
pItem->pvData = ::LocalFree(pItem->pvData);
}
}
pItem->dwFlags |= SLOT_LOADED;
if (!pItem->pvData)
return E_FAIL;
return S_OK;
}
HRESULT CMruBase::_GetSlotItem(UINT iSlot, SLOTITEMDATA **ppItem)
{
if (!(m_pSlots[iSlot].dwFlags & SLOT_LOADED))
_LoadItem(iSlot);
SLOTITEMDATA *pItem = &m_pSlots[iSlot];
if (!pItem->pvData)
return E_OUTOFMEMORY;
*ppItem = pItem;
return S_OK;
}
HRESULT CMruBase::_GetItem(UINT iSlot, SLOTITEMDATA **ppItem)
{
HRESULT hr = _GetSlot(iSlot, &iSlot);
if (FAILED(hr))
return hr;
return _GetSlotItem(iSlot, ppItem);
}
void CMruBase::_DeleteItem(UINT iSlot)
{
WCHAR szBuff[12];
_SlotString(iSlot, szBuff, _countof(szBuff));
_DeleteValue(szBuff);
m_pSlots[iSlot].pvData = ::LocalFree(m_pSlots[iSlot].pvData);
}
void CMruBase::_CheckUsedSlots()
{
UINT iGotSlot;
for (UINT iSlot = 0; iSlot < m_cSlots; ++iSlot)
_GetSlot(iSlot, &iGotSlot);
m_bChecked = TRUE;
}
HRESULT CMruBase::_AddItem(UINT iSlot, LPCVOID pvData, DWORD cbData)
{
SLOTITEMDATA *pItem = &m_pSlots[iSlot];
WCHAR szBuff[12];
_SlotString(iSlot, szBuff, _countof(szBuff));
if (SHSetValueW(m_hKey, NULL, szBuff, REG_BINARY, pvData, cbData) != ERROR_SUCCESS)
return E_OUTOFMEMORY;
if (cbData >= pItem->cbData || !pItem->pvData)
{
::LocalFree(pItem->pvData);
pItem->pvData = ::LocalAlloc(LPTR, cbData);
}
if (!pItem->pvData)
return E_FAIL;
pItem->cbData = cbData;
pItem->dwFlags = (SLOT_LOADED | SLOT_SET);
CopyMemory(pItem->pvData, pvData, cbData);
return S_OK;
}
STDMETHODIMP
CMruBase::InitData(
UINT cCapacity,
UINT flags,
HKEY hKey,
LPCWSTR pszSubKey OPTIONAL,
SLOTCOMPARE fnCompare OPTIONAL)
{
m_dwFlags = flags;
m_fnCompare = fnCompare;
m_cSlotRooms = cCapacity;
if (pszSubKey)
::RegCreateKeyExWrapW(hKey, pszSubKey, 0, NULL, 0, MAXIMUM_ALLOWED, NULL, &m_hKey, NULL);
else
m_hKey = SHRegDuplicateHKey(hKey);
if (!m_hKey)
return E_FAIL;
m_pSlots = (SLOTITEMDATA*)::LocalAlloc(LPTR, m_cSlotRooms * sizeof(SLOTITEMDATA));
if (!m_pSlots)
return E_OUTOFMEMORY;
return _InitSlots();
}
STDMETHODIMP CMruBase::AddData(LPCVOID pvData, DWORD cbData, UINT *piSlot)
{
UINT iSlot;
HRESULT hr = FindData(pvData, cbData, &iSlot);
if (FAILED(hr))
{
iSlot = _UpdateSlots(m_cSlots);
hr = _AddItem(iSlot, pvData, cbData);
if (FAILED(hr))
return hr;
}
else
{
iSlot = _UpdateSlots(iSlot);
hr = S_OK;
}
if (piSlot)
*piSlot = iSlot;
return hr;
}
STDMETHODIMP CMruBase::FindData(LPCVOID pvData, DWORD cbData, UINT *piSlot)
{
if (m_cSlots <= 0)
return E_FAIL;
UINT iSlot = 0;
SLOTITEMDATA *pItem;
while (FAILED(_GetItem(iSlot, &pItem)) || !_IsEqual(pItem, pvData, cbData))
{
if (++iSlot >= m_cSlots)
return E_FAIL;
}
*piSlot = iSlot;
return S_OK;
}
STDMETHODIMP CMruBase::GetData(UINT iSlot, LPVOID pvData, DWORD cbData)
{
SLOTITEMDATA *pItem;
HRESULT hr = _GetItem(iSlot, &pItem);
if (FAILED(hr))
return hr;
if (cbData < pItem->cbData)
return HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
CopyMemory(pvData, pItem->pvData, pItem->cbData);
return hr;
}
STDMETHODIMP CMruBase::QueryInfo(UINT iSlot, UINT *piGotSlot, DWORD *pcbData)
{
UINT iGotSlot;
HRESULT hr = _GetSlot(iSlot, &iGotSlot);
if (FAILED(hr))
return hr;
if (piGotSlot)
*piGotSlot = iGotSlot;
if (pcbData)
{
SLOTITEMDATA *pItem;
hr = _GetSlotItem(iGotSlot, &pItem);
if (SUCCEEDED(hr))
*pcbData = pItem->cbData;
}
return hr;
}
STDMETHODIMP CMruBase::Delete(UINT iSlot)
{
UINT uSlot;
HRESULT hr = _RemoveSlot(iSlot, &uSlot);
if (FAILED(hr))
return hr;
_DeleteItem(uSlot);
return hr;
}
BOOL CMruBase::_IsEqual(const SLOTITEMDATA *pItem, LPCVOID pvData, UINT cbData) const
{
if (m_fnCompare)
return m_fnCompare(pvData, pItem->pvData, cbData) == 0;
switch (m_dwFlags & COMPARE_BY_MASK)
{
case COMPARE_BY_MEMCMP:
if (pItem->cbData != cbData)
return FALSE;
return memcmp(pvData, pItem->pvData, cbData) == 0;
case COMPARE_BY_STRCMPIW:
return StrCmpIW((LPCWSTR)pvData, (LPCWSTR)pItem->pvData) == 0;
case COMPARE_BY_STRCMPW:
return StrCmpW((LPCWSTR)pvData, (LPCWSTR)pItem->pvData) == 0;
case COMPARE_BY_IEILISEQUAL:
return IEILIsEqual((LPCITEMIDLIST)pvData, (LPCITEMIDLIST)pItem->pvData, FALSE);
default:
ERR("0x%08X\n", m_dwFlags);
return FALSE;
}
}
DWORD CMruBase::_DeleteValue(LPCWSTR pszValue)
{
return SHDeleteValueW(m_hKey, NULL, pszValue);
}
HRESULT CMruBase::_UseEmptySlot(UINT *piSlot)
{
if (!m_bChecked)
_CheckUsedSlots();
if (!m_cSlotRooms)
return E_FAIL;
UINT iSlot = 0;
for (SLOTITEMDATA *pItem = m_pSlots; (pItem->dwFlags & SLOT_SET); ++pItem)
{
if (++iSlot >= m_cSlotRooms)
return E_FAIL;
}
m_pSlots[iSlot].dwFlags |= SLOT_SET;
*piSlot = iSlot;
++m_cSlots;
return S_OK;
}
class CMruShortList
: public CMruBase
{
protected:
LPWSTR m_pszSlotData = NULL;
HRESULT _InitSlots() override;
void _SaveSlots() override;
UINT _UpdateSlots(UINT iSlot) override;
void _SlotString(UINT iSlot, LPWSTR psz, DWORD cch) override;
HRESULT _GetSlot(UINT iSlot, UINT *puSlot) override;
HRESULT _RemoveSlot(UINT iSlot, UINT *puSlot) override;
friend class CMruLongList;
public:
CMruShortList()
{
}
~CMruShortList() override
{
m_pszSlotData = (LPWSTR)::LocalFree(m_pszSlotData);
}
};
HRESULT CMruShortList::_InitSlots()
{
DWORD cbData = (m_cSlotRooms + 1) * sizeof(WCHAR);
m_pszSlotData = (LPWSTR)LocalAlloc(LPTR, cbData);
if (!m_pszSlotData)
return E_OUTOFMEMORY;
if (SHGetValueW(m_hKey, NULL, L"MRUList", NULL, m_pszSlotData, &cbData) == ERROR_SUCCESS)
m_cSlots = (cbData / sizeof(WCHAR)) - 1;
m_pszSlotData[m_cSlots] = UNICODE_NULL;
return S_OK;
}
void CMruShortList::_SaveSlots()
{
if (m_bNeedSave)
{
DWORD cbData = (m_cSlots + 1) * sizeof(WCHAR);
SHSetValueW(m_hKey, NULL, L"MRUList", REG_SZ, m_pszSlotData, cbData);
m_bNeedSave = FALSE;
}
}
// NOTE: MRUList uses lowercase alphabet for history of most recently used items.
UINT CMruShortList::_UpdateSlots(UINT iSlot)
{
UINT iData, cDataToMove = iSlot;
if (iSlot == m_cSlots)
{
if (SUCCEEDED(_UseEmptySlot(&iData)))
{
++cDataToMove;
}
else
{
// This code is getting the item index from a lowercase letter.
iData = m_pszSlotData[m_cSlots - 1] - L'a';
--cDataToMove;
}
}
else
{
iData = m_pszSlotData[iSlot] - L'a';
}
if (cDataToMove)
{
MoveMemory(m_pszSlotData + 1, m_pszSlotData, cDataToMove * sizeof(WCHAR));
m_pszSlotData[0] = (WCHAR)(L'a' + iData);
m_bNeedSave = TRUE;
}
return iData;
}
void CMruShortList::_SlotString(UINT iSlot, LPWSTR psz, DWORD cch)
{
if (cch >= 2)
{
psz[0] = (WCHAR)(L'a' + iSlot);
psz[1] = UNICODE_NULL;
}
}
HRESULT CMruShortList::_GetSlot(UINT iSlot, UINT *puSlot)
{
if (iSlot >= m_cSlots)
return E_FAIL;
UINT iData = m_pszSlotData[iSlot] - L'a';
if (iData >= m_cSlotRooms)
return E_FAIL;
*puSlot = iData;
m_pSlots[iData].dwFlags |= SLOT_SET;
return S_OK;
}
HRESULT CMruShortList::_RemoveSlot(UINT iSlot, UINT *puSlot)
{
HRESULT hr = _GetSlot(iSlot, puSlot);
if (FAILED(hr))
return hr;
MoveMemory(&m_pszSlotData[iSlot], &m_pszSlotData[iSlot + 1], (m_cSlots - iSlot) * sizeof(WCHAR));
--m_cSlots;
m_pSlots->dwFlags &= ~SLOT_SET;
m_bNeedSave = TRUE;
return hr;
}
class CMruLongList
: public CMruBase
{
protected:
UINT *m_puSlotData = NULL; // The slot data
void _ImportShortList();
HRESULT _InitSlots() override;
void _SaveSlots() override;
UINT _UpdateSlots(UINT iSlot) override;
void _SlotString(UINT iSlot, LPWSTR psz, DWORD cch) override;
HRESULT _GetSlot(UINT iSlot, UINT *puSlot) override;
HRESULT _RemoveSlot(UINT iSlot, UINT *puSlot) override;
public:
CMruLongList()
{
}
~CMruLongList() override
{
m_puSlotData = (UINT*)::LocalFree(m_puSlotData);
}
};
HRESULT CMruLongList::_InitSlots()
{
DWORD cbData = (m_cSlotRooms + 1) * sizeof(UINT);
m_puSlotData = (UINT*)LocalAlloc(LPTR, cbData);
if (!m_puSlotData)
return E_OUTOFMEMORY;
if (SHGetValueW(m_hKey, NULL, L"MRUListEx", NULL, m_puSlotData, &cbData) == ERROR_SUCCESS)
m_cSlots = (cbData / sizeof(UINT)) - 1;
else
_ImportShortList();
m_puSlotData[m_cSlots] = MAXDWORD;
return S_OK;
}
void CMruLongList::_SaveSlots()
{
if (m_bNeedSave)
{
SHSetValueW(m_hKey, NULL, L"MRUListEx", REG_BINARY, m_puSlotData,
(m_cSlots + 1) * sizeof(UINT));
m_bNeedSave = FALSE;
}
}
UINT CMruLongList::_UpdateSlots(UINT iSlot)
{
UINT cSlotsToMove, uSlotData;
cSlotsToMove = iSlot;
if (iSlot == m_cSlots)
{
if (SUCCEEDED(_UseEmptySlot(&uSlotData)))
{
++cSlotsToMove;
}
else
{
uSlotData = m_puSlotData[m_cSlots - 1];
--cSlotsToMove;
}
}
else
{
uSlotData = m_puSlotData[iSlot];
}
if (cSlotsToMove > 0)
{
MoveMemory(m_puSlotData + 1, m_puSlotData, cSlotsToMove * sizeof(UINT));
m_puSlotData[0] = uSlotData;
m_bNeedSave = TRUE;
}
return uSlotData;
}
void CMruLongList::_SlotString(UINT iSlot, LPWSTR psz, DWORD cch)
{
StringCchPrintfW(psz, cch, L"%d", iSlot);
}
HRESULT CMruLongList::_GetSlot(UINT iSlot, UINT *puSlot)
{
if (iSlot >= m_cSlots)
return E_FAIL;
UINT uSlotData = m_puSlotData[iSlot];
if (uSlotData >= m_cSlotRooms)
return E_FAIL;
*puSlot = uSlotData;
m_pSlots[uSlotData].dwFlags |= SLOT_SET;
return S_OK;
}
HRESULT CMruLongList::_RemoveSlot(UINT iSlot, UINT *puSlot)
{
HRESULT hr = _GetSlot(iSlot, puSlot);
if (FAILED(hr))
return hr;
MoveMemory(&m_puSlotData[iSlot], &m_puSlotData[iSlot + 1], (m_cSlots - iSlot) * sizeof(UINT));
--m_cSlots;
m_pSlots[0].dwFlags &= ~SLOT_SET;
m_bNeedSave = TRUE;
return hr;
}
void CMruLongList::_ImportShortList()
{
CMruShortList *pShortList = new CMruShortList();
if (!pShortList)
return;
HRESULT hr = pShortList->InitData(m_cSlotRooms, 0, m_hKey, NULL, NULL);
if (SUCCEEDED(hr))
{
for (;;)
{
UINT iSlot;
hr = pShortList->_GetSlot(m_cSlots, &iSlot);
if (FAILED(hr))
break;
SLOTITEMDATA *pItem;
hr = pShortList->_GetSlotItem(iSlot, &pItem);
if (FAILED(hr))
break;
_AddItem(iSlot, pItem->pvData, pItem->cbData);
pShortList->_DeleteItem(iSlot);
m_puSlotData[m_cSlots++] = iSlot;
}
m_bNeedSave = TRUE;
}
SHDeleteValueW(m_hKey, NULL, L"MRUList");
pShortList->Release();
}
EXTERN_C HRESULT
CMruLongList_CreateInstance(DWORD_PTR dwUnused1, void **ppv, DWORD_PTR dwUnused3)
{
UNREFERENCED_PARAMETER(dwUnused1);
UNREFERENCED_PARAMETER(dwUnused3);
TRACE("%p %p %p\n", dwUnused1, ppv, dwUnused3);
if (!ppv)
return E_POINTER;
CMruLongList *pMruList = new CMruLongList();
*ppv = static_cast<IMruDataList*>(pMruList);
TRACE("%p\n", *ppv);
return S_OK;
}
class CMruNode
: public CMruLongList
{
protected:
UINT m_iSlot = 0; // The slot index
CMruNode *m_pParent = NULL; // The parent
IShellFolder *m_pShellFolder = NULL; // The shell folder
BOOL _InitLate();
BOOL _IsEqual(SLOTITEMDATA *pItem, LPCVOID pvData, UINT cbData);
DWORD _DeleteValue(LPCWSTR pszValue) override;
HRESULT _CreateNode(UINT iSlot, CMruNode **ppNewNode);
HRESULT _AddPidl(UINT iSlot, LPCITEMIDLIST pidl);
HRESULT _FindPidl(LPCITEMIDLIST pidl, UINT *piSlot);
HRESULT _GetPidlSlot(LPCITEMIDLIST pidl, BOOL bAdd, UINT *piSlot);
public:
CMruNode() { }
CMruNode(CMruNode *pParent, UINT iSlot);
~CMruNode() override;
CMruNode *GetParent();
HRESULT BindToSlot(UINT iSlot, IShellFolder **ppSF);
HRESULT GetNode(BOOL bAdd, LPCITEMIDLIST pidl, CMruNode **pNewNode);
HRESULT GetNodeSlot(UINT *pnNodeSlot);
HRESULT SetNodeSlot(UINT nNodeSlot);
HRESULT RemoveLeast(UINT *pnNodeSlot);
HRESULT Clear(CMruPidlList *pList);
};
CMruNode::CMruNode(CMruNode *pParent, UINT iSlot)
{
m_iSlot = iSlot;
m_pParent = pParent;
pParent->AddRef();
}
CMruNode::~CMruNode()
{
if (m_pParent)
{
m_pParent->Release();
m_pParent = NULL;
}
if (m_pShellFolder)
{
m_pShellFolder->Release();
m_pShellFolder = NULL;
}
}
CMruNode *CMruNode::GetParent()
{
if (m_pParent)
m_pParent->AddRef();
return m_pParent;
}
HRESULT CMruNode::_CreateNode(UINT iSlot, CMruNode **ppNewNode)
{
CMruNode *pNewNode = new CMruNode(this, iSlot);
if (!pNewNode)
return E_OUTOFMEMORY;
WCHAR szSubKey[12];
_SlotString(iSlot, szSubKey, _countof(szSubKey));
HRESULT hr = pNewNode->InitData(m_cSlotRooms, 0, m_hKey, szSubKey, NULL);
if (FAILED(hr))
pNewNode->Release();
else
*ppNewNode = pNewNode;
return hr;
}
HRESULT CMruNode::GetNode(BOOL bAdd, LPCITEMIDLIST pidl, CMruNode **ppNewNode)
{
if (!pidl || !pidl->mkid.cb)
{
*ppNewNode = this;
AddRef();
return S_OK;
}
if (!_InitLate())
return E_FAIL;
UINT iSlot;
HRESULT hr = _GetPidlSlot(pidl, bAdd, &iSlot);
if (FAILED(hr))
{
if (!bAdd)
{
*ppNewNode = this;
AddRef();
return S_FALSE;
}
return hr;
}
CMruNode *pNewNode;
hr = _CreateNode(iSlot, &pNewNode);
if (SUCCEEDED(hr))
{
_SaveSlots();
LPCITEMIDLIST pidl2 = (LPCITEMIDLIST)((LPBYTE)pidl + pidl->mkid.cb);
pNewNode->GetNode(bAdd, pidl2, ppNewNode);
pNewNode->Release();
}
return hr;
}
HRESULT CMruNode::BindToSlot(UINT iSlot, IShellFolder **ppSF)
{
SLOTITEMDATA *pItem;
HRESULT hr = _GetSlotItem(iSlot, &pItem);
if (FAILED(hr))
return hr;
return m_pShellFolder->BindToObject((LPITEMIDLIST)pItem->pvData,
NULL,
IID_IShellFolder,
(void **)ppSF);
}
BOOL CMruNode::_InitLate()
{
if (!m_pShellFolder)
{
if (m_pParent)
m_pParent->BindToSlot(m_iSlot, &m_pShellFolder);
else
SHGetDesktopFolder(&m_pShellFolder);
}
return !!m_pShellFolder;
}
BOOL CMruNode::_IsEqual(SLOTITEMDATA *pItem, LPCVOID pvData, UINT cbData)
{
return m_pShellFolder->CompareIDs(0x10000000,
(LPITEMIDLIST)pItem->pvData,
(LPCITEMIDLIST)pvData) == 0;
}
HRESULT CMruNode::GetNodeSlot(UINT *pnNodeSlot)
{
DWORD dwData, cbData = sizeof(dwData);
DWORD error = SHGetValueW(m_hKey, NULL, L"NodeSlot", NULL, &dwData, (pnNodeSlot ? &cbData : NULL));
if (error != ERROR_SUCCESS)
return E_FAIL;
*pnNodeSlot = (UINT)dwData;
return S_OK;
}
HRESULT CMruNode::SetNodeSlot(UINT nNodeSlot)
{
DWORD dwData = nNodeSlot;
if (SHSetValueW(m_hKey, NULL, L"NodeSlot", REG_DWORD, &dwData, sizeof(dwData)) != ERROR_SUCCESS)
return E_FAIL;
return S_OK;
}
HRESULT CMruNode::_AddPidl(UINT iSlot, LPCITEMIDLIST pidl)
{
return CMruBase::_AddItem(iSlot, pidl, sizeof(WORD) + pidl->mkid.cb);
}
DWORD CMruNode::_DeleteValue(LPCWSTR pszValue)
{
CMruBase::_DeleteValue(pszValue);
return SHDeleteKeyW(m_hKey, pszValue);
}
HRESULT CMruNode::_FindPidl(LPCITEMIDLIST pidl, UINT *piSlot)
{
return FindData(pidl, sizeof(WORD) + pidl->mkid.cb, piSlot);
}
HRESULT CMruNode::_GetPidlSlot(LPCITEMIDLIST pidl, BOOL bAdd, UINT *piSlot)
{
LPITEMIDLIST pidlFirst = ILCloneFirst(pidl);
if (!pidlFirst)
return E_OUTOFMEMORY;
UINT iSlot;
HRESULT hr = _FindPidl(pidlFirst, &iSlot);
if (SUCCEEDED(hr))
{
*piSlot = _UpdateSlots(iSlot);
hr = S_OK;
}
else if (bAdd)
{
*piSlot = _UpdateSlots(m_cSlots);
hr = _AddPidl(*piSlot, pidlFirst);
}
ILFree(pidlFirst);
return hr;
}
HRESULT CMruNode::RemoveLeast(UINT *pnNodeSlot)
{
if (!m_cSlots)
{
GetNodeSlot(pnNodeSlot);
return S_FALSE;
}
UINT uSlot;
HRESULT hr = _GetSlot(m_cSlots - 1, &uSlot);
if (FAILED(hr))
return hr;
CMruNode *pNode;
hr = _CreateNode(uSlot, &pNode);
if (SUCCEEDED(hr))
{
hr = pNode->RemoveLeast(pnNodeSlot);
pNode->Release();
}
if (hr == S_FALSE)
{
Delete(m_cSlots - 1);
if (m_cSlots || SUCCEEDED(GetNodeSlot(0)))
return S_OK;
}
return hr;
}
class CMruPidlList
: public CMruNode
, public IMruPidlList
{
protected:
LPBYTE m_pbNodeSlots = NULL; // The node slots (contains SLOT_... flags)
DWORD m_cMaxNodeSlots = 0; // The upper bound of the node slot index
HANDLE m_hMutex = NULL; // The mutex (for sync)
BOOL _LoadNodeSlots();
void _SaveNodeSlots();
HRESULT _InitNodeSlots();
public:
CMruPidlList() { }
~CMruPidlList() override;
HRESULT GetEmptySlot(UINT *pnNodeSlot);
void EmptyNodeSlot(UINT nNodeSlot);
// IUnknown methods
STDMETHODIMP QueryInterface(REFIID riid, void **ppvObj) override;
STDMETHODIMP_(ULONG) AddRef() override
{
return CMruBase::AddRef();
}
STDMETHODIMP_(ULONG) Release() override
{
return CMruBase::Release();
}
// IMruPidlList methods
STDMETHODIMP InitList(UINT cMRUSize, HKEY hKey, LPCWSTR pszSubKey) override;
STDMETHODIMP UsePidl(LPCITEMIDLIST pidl, UINT *pnNodeSlot) override;
STDMETHODIMP QueryPidl(
LPCITEMIDLIST pidl,
UINT cSlots,
UINT *pnNodeSlots,
UINT *pcNodeSlots) override;
STDMETHODIMP PruneKids(LPCITEMIDLIST pidl) override;
};
CMruPidlList::~CMruPidlList()
{
m_pbNodeSlots = (LPBYTE)::LocalFree(m_pbNodeSlots);
if (m_hMutex)
{
::CloseHandle(m_hMutex);
m_hMutex = NULL;
}
}
STDMETHODIMP CMruPidlList::QueryInterface(REFIID riid, void **ppvObj)
{
if (!ppvObj)
return E_POINTER;
if (::IsEqualGUID(riid, IID_IMruPidlList) || ::IsEqualGUID(riid, IID_IUnknown))
{
*ppvObj = static_cast<IMruPidlList*>(this);
AddRef();
return S_OK;
}
ERR("%s: E_NOINTERFACE\n", debugstr_guid(&riid));
return E_NOINTERFACE;
}
BOOL CMruPidlList::_LoadNodeSlots()
{
DWORD cbNodeSlots = m_cSlotRooms * sizeof(BYTE);
if (SHGetValueW(m_hKey, NULL, L"NodeSlots", NULL, m_pbNodeSlots, &cbNodeSlots) != ERROR_SUCCESS)
return FALSE;
m_cMaxNodeSlots = cbNodeSlots / sizeof(BYTE);
return TRUE;
}
void CMruPidlList::_SaveNodeSlots()
{
DWORD cbNodeSlots = m_cMaxNodeSlots * sizeof(BYTE);
SHSetValueW(m_hKey, NULL, L"NodeSlots", REG_BINARY, m_pbNodeSlots, cbNodeSlots);
}
HRESULT CMruPidlList::_InitNodeSlots()
{
m_pbNodeSlots = (BYTE*)LocalAlloc(LPTR, m_cSlotRooms * sizeof(BYTE));
if (!m_pbNodeSlots)
return E_OUTOFMEMORY;
_LoadNodeSlots();
m_bNeedSave = TRUE;
_SaveNodeSlots();
return S_OK;
}
HRESULT CMruPidlList::GetEmptySlot(UINT *pnNodeSlot)
{
*pnNodeSlot = 0;
if (!_LoadNodeSlots())
return E_FAIL;
if (m_cMaxNodeSlots < m_cSlotRooms)
{
m_pbNodeSlots[m_cMaxNodeSlots] = SLOT_SET;
*pnNodeSlot = ++m_cMaxNodeSlots;
_SaveNodeSlots();
return S_OK;
}
for (UINT iNodeSlot = 0; iNodeSlot < m_cMaxNodeSlots; ++iNodeSlot)
{
if (m_pbNodeSlots[iNodeSlot] & SLOT_SET)
continue;
m_pbNodeSlots[iNodeSlot] = SLOT_SET;
*pnNodeSlot = iNodeSlot + 1; // nNodeSlot is 1-base
_SaveNodeSlots();
return S_OK;
}
HRESULT hr = E_FAIL;
if (SUCCEEDED(RemoveLeast(pnNodeSlot)) && *pnNodeSlot)
hr = S_OK;
_SaveNodeSlots();
return hr;
}
STDMETHODIMP CMruPidlList::InitList(UINT cMRUSize, HKEY hKey, LPCWSTR pszSubKey)
{
TRACE("%p -> %u %p %s\n", this, cMRUSize, hKey, debugstr_w(pszSubKey));
HRESULT hr = InitData(cMRUSize, 0, hKey, pszSubKey, NULL);
if (FAILED(hr))
{
ERR("0x%08lX\n", hr);
return hr;
}
hr = _InitNodeSlots();
if (FAILED(hr))
{
ERR("0x%08lX\n", hr);
return hr;
}
m_hMutex = ::CreateMutexW(NULL, FALSE, L"Shell.CMruPidlList");
if (!m_hMutex)
{
hr = HRESULT_FROM_WIN32(GetLastError());
ERR("0x%08lX\n", hr);
}
return hr;
}
STDMETHODIMP CMruPidlList::UsePidl(LPCITEMIDLIST pidl, UINT *pnNodeSlot)
{
TRACE("%p -> %p %p\n", this, pidl, pnNodeSlot);
CSafeMutex mutex;
HRESULT hr = mutex.Enter(m_hMutex);
if (FAILED(hr))
{
ERR("0x%08lX\n", hr);
return hr;
}
*pnNodeSlot = 0;
CMruNode *pNode;
hr = GetNode(TRUE, pidl, &pNode);
if (FAILED(hr))
{
ERR("0x%08lX\n", hr);
return hr;
}
hr = pNode->GetNodeSlot(pnNodeSlot);
if (FAILED(hr))
{
hr = GetEmptySlot(pnNodeSlot);
if (SUCCEEDED(hr))
{
hr = pNode->SetNodeSlot(*pnNodeSlot);
}
}
pNode->Release();
return hr;
}
STDMETHODIMP CMruPidlList::QueryPidl(
LPCITEMIDLIST pidl,
UINT cSlots,
UINT *pnNodeSlots,
UINT *pcNodeSlots)
{
TRACE("%p -> %p %u %p %p\n", this, pidl, cSlots, pnNodeSlots, pcNodeSlots);
CSafeMutex mutex;
HRESULT hr = mutex.Enter(m_hMutex);
if (FAILED(hr))
{
ERR("0x%08lX\n", hr);
return hr;
}
*pcNodeSlots = 0;
CMruNode *pNode;
hr = GetNode(FALSE, pidl, &pNode);
if (FAILED(hr))
{
ERR("0x%08lX\n", hr);
return hr;
}
while (pNode && *pcNodeSlots < cSlots)
{
CMruNode *pParent = pNode->GetParent();
if (SUCCEEDED(pNode->GetNodeSlot(&pnNodeSlots[*pcNodeSlots])))
++(*pcNodeSlots);
else if (hr == S_OK && !*pcNodeSlots)
hr = S_FALSE;
pNode->Release();
pNode = pParent;
}
if (pNode)
pNode->Release();
if (SUCCEEDED(hr) && !*pcNodeSlots)
hr = E_FAIL;
return hr;
}
STDMETHODIMP CMruPidlList::PruneKids(LPCITEMIDLIST pidl)
{
TRACE("%p -> %p\n", this, pidl);
CSafeMutex mutex;
HRESULT hr = mutex.Enter(m_hMutex);
if (FAILED(hr))
{
ERR("0x%08lX\n", hr);
return hr;
}
if (!_LoadNodeSlots())
return hr;
CMruNode *pNode;
hr = GetNode(FALSE, pidl, &pNode);
if (FAILED(hr))
return hr;
if (hr == S_OK)
hr = pNode->Clear(this);
else
hr = E_FAIL;
pNode->Release();
_SaveNodeSlots();
return hr;
}
void CMruPidlList::EmptyNodeSlot(UINT nNodeSlot)
{
m_pbNodeSlots[nNodeSlot - 1] = 0; // nNodeSlot is 1-base
m_bNeedSave = TRUE;
}
EXTERN_C HRESULT CMruPidlList_CreateInstance(DWORD_PTR dwUnused1, void **ppv, DWORD_PTR dwUnused3)
{
UNREFERENCED_PARAMETER(dwUnused1);
UNREFERENCED_PARAMETER(dwUnused3);
TRACE("%p %p %p\n", dwUnused1, ppv, dwUnused3);
if (!ppv)
return E_POINTER;
*ppv = NULL;
CMruPidlList *pMruList = new CMruPidlList();
if (pMruList == NULL)
return E_OUTOFMEMORY;
*ppv = static_cast<IMruPidlList*>(pMruList);
TRACE("%p\n", *ppv);
return S_OK;
}
HRESULT CMruNode::Clear(CMruPidlList *pList)
{
UINT uSlot, nNodeSlot;
HRESULT hr;
while (SUCCEEDED(_GetSlot(0, &uSlot)))
{
CMruNode *pNode;
hr = _CreateNode(uSlot, &pNode);
if (SUCCEEDED(hr))
{
hr = pNode->GetNodeSlot(&nNodeSlot);
if (SUCCEEDED(hr))
pList->EmptyNodeSlot(nNodeSlot);
pNode->Clear(pList);
pNode->Release();
}
Delete(0);
}
return S_OK;
}
class CMruClassFactory : public IClassFactory
{
protected:
LONG m_cRefs = 1;
public:
CMruClassFactory()
{
::InterlockedIncrement(&SHDOCVW_refCount);
}
virtual ~CMruClassFactory()
{
::InterlockedDecrement(&SHDOCVW_refCount);
}
// IUnknown methods
STDMETHODIMP QueryInterface(REFIID riid, void **ppvObj) override;
STDMETHODIMP_(ULONG) AddRef() override
{
return ::InterlockedIncrement(&m_cRefs);
}
STDMETHODIMP_(ULONG) Release()
{
if (::InterlockedDecrement(&m_cRefs) == 0)
{
delete this;
return 0;
}
return m_cRefs;
}
// IClassFactory methods
STDMETHODIMP CreateInstance(IUnknown *pUnkOuter, REFIID riid, void **ppvObject);
STDMETHODIMP LockServer(BOOL fLock);
static void* operator new(size_t size)
{
return ::LocalAlloc(LPTR, size);
}
static void operator delete(void *ptr)
{
::LocalFree(ptr);
}
};
STDMETHODIMP CMruClassFactory::QueryInterface(REFIID riid, void **ppvObj)
{
if (!ppvObj)
return E_POINTER;
if (IsEqualGUID(riid, IID_IClassFactory) || IsEqualGUID(riid, IID_IUnknown))
{
*ppvObj = static_cast<IClassFactory*>(this);
AddRef();
return S_OK;
}
ERR("%s: E_NOINTERFACE\n", debugstr_guid(&riid));
return E_NOINTERFACE;
}
STDMETHODIMP CMruClassFactory::CreateInstance(IUnknown *pUnkOuter, REFIID riid, void **ppvObject)
{
if (pUnkOuter)
return CLASS_E_NOAGGREGATION;
if (IsEqualGUID(riid, IID_IMruDataList))
return CMruLongList_CreateInstance(0, ppvObject, 0);
if (IsEqualGUID(riid, IID_IMruPidlList))
return CMruPidlList_CreateInstance(0, ppvObject, 0);
return E_NOINTERFACE;
}
STDMETHODIMP CMruClassFactory::LockServer(BOOL fLock)
{
if (fLock)
::InterlockedIncrement(&SHDOCVW_refCount);
else
::InterlockedDecrement(&SHDOCVW_refCount);
return S_OK;
}
EXTERN_C HRESULT CMruClassFactory_CreateInstance(REFIID riid, void **ppv)
{
CMruClassFactory *pFactory = new CMruClassFactory();
if (!pFactory)
return E_OUTOFMEMORY;
HRESULT hr = pFactory->QueryInterface(riid, ppv);
pFactory->Release();
return hr;
}
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