defcontextmenu.cpp

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/*
 * PROJECT:     shell32
 * LICENSE:     GPL - See COPYING in the top level directory
 * FILE:        dll/win32/shell32/shv_item_new.c
 * PURPOSE:     provides default context menu implementation
 * PROGRAMMERS: Johannes Anderwald (janderwald@reactos.org)
 */

/*
TODO:
1. In DoStaticShellExtensions, check for "Explore" and "Open" verbs, and for BrowserFlags or
    ExplorerFlags under those entries. These flags indicate if we should browse to the new item
    instead of attempting to open it.
2. The code in NotifyShellViewWindow to deliver commands to the view is broken. It is an excellent
    example of the wrong way to do it.
*/

#include <precomp.h>

WINE_DEFAULT_DEBUG_CHANNEL(dmenu);

typedef struct _DynamicShellEntry_
{
    UINT iIdCmdFirst;
    UINT NumIds;
    CLSID ClassID;
    IContextMenu *pCM;
    struct _DynamicShellEntry_ *pNext;
} DynamicShellEntry, *PDynamicShellEntry;

typedef struct _StaticShellEntry_
{
    LPWSTR szVerb;
    LPWSTR szClass;
    struct _StaticShellEntry_ *pNext;
} StaticShellEntry, *PStaticShellEntry;

class CDefaultContextMenu :
    public CComObjectRootEx<CComMultiThreadModelNoCS>,
    public IContextMenu2
{
    private:
        DEFCONTEXTMENU m_Dcm;
        IDataObject *m_pDataObj;
        LPCITEMIDLIST m_pidlFolder;
        DWORD m_bGroupPolicyActive;
        PDynamicShellEntry m_pDynamicEntries; /* first dynamic shell extension entry */
        UINT m_iIdSHEFirst; /* first used id */
        UINT m_iIdSHELast; /* last used id */
        PStaticShellEntry m_pStaticEntries; /* first static shell extension entry */
        UINT m_iIdSCMFirst; /* first static used id */
        UINT m_iIdSCMLast; /* last static used id */

        void AddStaticEntry(LPCWSTR pwszVerb, LPCWSTR pwszClass);
        void AddStaticEntryForKey(HKEY hKey, LPCWSTR pwszClass);
        void AddStaticEntryForFileClass(LPCWSTR pwszExt);
        BOOL IsShellExtensionAlreadyLoaded(const CLSID *pclsid);
        HRESULT LoadDynamicContextMenuHandler(HKEY hKey, const CLSID *pclsid);
        BOOL EnumerateDynamicContextHandlerForKey(HKEY hRootKey);
        UINT InsertMenuItemsOfDynamicContextMenuExtension(HMENU hMenu, UINT IndexMenu, UINT idCmdFirst, UINT idCmdLast);
        UINT BuildBackgroundContextMenu(HMENU hMenu, UINT iIdCmdFirst, UINT iIdCmdLast, UINT uFlags);
        UINT AddStaticContextMenusToMenu(HMENU hMenu, UINT IndexMenu);
        UINT BuildShellItemContextMenu(HMENU hMenu, UINT iIdCmdFirst, UINT iIdCmdLast, UINT uFlags);
        HRESULT DoPaste(LPCMINVOKECOMMANDINFO lpcmi);
        HRESULT DoOpenOrExplore(LPCMINVOKECOMMANDINFO lpcmi);
        HRESULT DoCreateLink(LPCMINVOKECOMMANDINFO lpcmi);
        HRESULT DoDelete(LPCMINVOKECOMMANDINFO lpcmi);
        HRESULT DoCopyOrCut(LPCMINVOKECOMMANDINFO lpcmi, BOOL bCopy);
        HRESULT DoRename(LPCMINVOKECOMMANDINFO lpcmi);
        HRESULT DoProperties(LPCMINVOKECOMMANDINFO lpcmi);
        HRESULT DoFormat(LPCMINVOKECOMMANDINFO lpcmi);
        HRESULT DoDynamicShellExtensions(LPCMINVOKECOMMANDINFO lpcmi);
        HRESULT DoStaticShellExtensions(LPCMINVOKECOMMANDINFO lpcmi);

    public:
        CDefaultContextMenu();
        ~CDefaultContextMenu();
        HRESULT WINAPI Initialize(const DEFCONTEXTMENU *pdcm);

        // IContextMenu
        virtual HRESULT WINAPI QueryContextMenu(HMENU hMenu, UINT indexMenu, UINT idCmdFirst, UINT idCmdLast, UINT uFlags);
        virtual HRESULT WINAPI InvokeCommand(LPCMINVOKECOMMANDINFO lpcmi);
        virtual HRESULT WINAPI GetCommandString(UINT_PTR idCommand, UINT uFlags, UINT *lpReserved, LPSTR lpszName, UINT uMaxNameLen);

        // IContextMenu2
        virtual HRESULT WINAPI HandleMenuMsg(UINT uMsg, WPARAM wParam, LPARAM lParam);

        BEGIN_COM_MAP(CDefaultContextMenu)
        COM_INTERFACE_ENTRY_IID(IID_IContextMenu, IContextMenu)
        COM_INTERFACE_ENTRY_IID(IID_IContextMenu2, IContextMenu2)
        END_COM_MAP()
};

CDefaultContextMenu::CDefaultContextMenu()
{
    memset(&m_Dcm, 0, sizeof(m_Dcm));
    m_pDataObj = NULL;
    m_pidlFolder = NULL;
    m_bGroupPolicyActive = 0;
    m_pDynamicEntries = NULL;
    m_iIdSHEFirst = 0;
    m_iIdSHELast = 0;
    m_pStaticEntries = NULL;
    m_iIdSCMFirst = 0;
    m_iIdSCMLast = 0;
}

CDefaultContextMenu::~CDefaultContextMenu()
{
    /* Free dynamic shell extension entries */
    PDynamicShellEntry pDynamicEntry = m_pDynamicEntries, pNextDynamic;
    while (pDynamicEntry)
    {
        pNextDynamic = pDynamicEntry->pNext;
        pDynamicEntry->pCM->Release();
        HeapFree(GetProcessHeap(), 0, pDynamicEntry);
        pDynamicEntry = pNextDynamic;
    }

    /* Free static shell extension entries */
    PStaticShellEntry pStaticEntry = m_pStaticEntries, pNextStatic;
    while (pStaticEntry)
    {
        pNextStatic = pStaticEntry->pNext;
        HeapFree(GetProcessHeap(), 0, pStaticEntry->szClass);
        HeapFree(GetProcessHeap(), 0, pStaticEntry->szVerb);
        HeapFree(GetProcessHeap(), 0, pStaticEntry);
        pStaticEntry = pNextStatic;
    }

    if (m_pidlFolder)
        ILFree((_ITEMIDLIST*)m_pidlFolder);
    if (m_pDataObj)
        m_pDataObj->Release();
}

HRESULT WINAPI CDefaultContextMenu::Initialize(const DEFCONTEXTMENU *pdcm)
{
    IDataObject *pDataObj;

    TRACE("cidl %u\n", pdcm->cidl);
    if (SUCCEEDED(SHCreateDataObject(pdcm->pidlFolder, pdcm->cidl, pdcm->apidl, NULL, IID_IDataObject, (void**)&pDataObj)))
        m_pDataObj = pDataObj;

    if (!pdcm->cidl)
    {
        /* Init pidlFolder only if it is background context menu. See IShellExtInit::Initialize */
        if (pdcm->pidlFolder)
            m_pidlFolder = ILClone(pdcm->pidlFolder);
        else
        {
            IPersistFolder2 *pf = NULL;
            if (SUCCEEDED(pdcm->psf->QueryInterface(IID_IPersistFolder2, (PVOID*)&pf)))
            {
                if (FAILED(pf->GetCurFolder((_ITEMIDLIST**)&m_pidlFolder)))
                    ERR("GetCurFolder failed\n");
                pf->Release();
            }
        }
        TRACE("pidlFolder %p\n", m_pidlFolder);
    }

    CopyMemory(&m_Dcm, pdcm, sizeof(DEFCONTEXTMENU));
    return S_OK;
}

void
CDefaultContextMenu::AddStaticEntry(const WCHAR *szVerb, const WCHAR *szClass)
{
    PStaticShellEntry pEntry = m_pStaticEntries, pLastEntry = NULL;
    while(pEntry)
    {
        if (!wcsicmp(pEntry->szVerb, szVerb))
        {
            /* entry already exists */
            return;
        }
        pLastEntry = pEntry;
        pEntry = pEntry->pNext;
    }

    TRACE("adding verb %s szClass %s\n", debugstr_w(szVerb), debugstr_w(szClass));

    pEntry = (StaticShellEntry *)HeapAlloc(GetProcessHeap(), 0, sizeof(StaticShellEntry));
    if (pEntry)
    {
        pEntry->pNext = NULL;
        pEntry->szVerb = (LPWSTR)HeapAlloc(GetProcessHeap(), 0, (wcslen(szVerb) + 1) * sizeof(WCHAR));
        if (pEntry->szVerb)
            wcscpy(pEntry->szVerb, szVerb);
        pEntry->szClass = (LPWSTR)HeapAlloc(GetProcessHeap(), 0, (wcslen(szClass) + 1) * sizeof(WCHAR));
        if (pEntry->szClass)
            wcscpy(pEntry->szClass, szClass);
    }

    if (!wcsicmp(szVerb, L"open"))
    {
        /* open verb is always inserted in front */
        pEntry->pNext = m_pStaticEntries;
        m_pStaticEntries = pEntry;
    }
    else if (pLastEntry)
        pLastEntry->pNext = pEntry;
    else
        m_pStaticEntries = pEntry;
}

void
CDefaultContextMenu::AddStaticEntryForKey(HKEY hKey, const WCHAR *pwszClass)
{
    WCHAR wszName[40];
    DWORD cchName, dwIndex = 0;

    TRACE("AddStaticEntryForKey %x %ls\n", hKey, pwszClass);

    while(TRUE)
    {
        cchName = _countof(wszName);
        if (RegEnumKeyExW(hKey, dwIndex++, wszName, &cchName, NULL, NULL, NULL, NULL) != ERROR_SUCCESS)
            break;

        AddStaticEntry(wszName, pwszClass);
    }
}

void
CDefaultContextMenu::AddStaticEntryForFileClass(const WCHAR * szExt)
{
    WCHAR szBuffer[100];
    HKEY hKey;
    LONG result;
    DWORD dwBuffer;
    UINT Length;
    static WCHAR szShell[] = L"\\shell";
    static WCHAR szShellAssoc[] = L"SystemFileAssociations\\";

    TRACE("AddStaticEntryForFileClass entered with %s\n", debugstr_w(szExt));

    Length = wcslen(szExt);
    if (Length + (sizeof(szShell) / sizeof(WCHAR)) + 1 < sizeof(szBuffer) / sizeof(WCHAR))
    {
        wcscpy(szBuffer, szExt);
        wcscpy(&szBuffer[Length], szShell);
        result = RegOpenKeyExW(HKEY_CLASSES_ROOT, szBuffer, 0, KEY_READ | KEY_QUERY_VALUE, &hKey);
        if (result == ERROR_SUCCESS)
        {
            szBuffer[Length] = 0;
            AddStaticEntryForKey(hKey, szExt);
            RegCloseKey(hKey);
        }
    }

    dwBuffer = sizeof(szBuffer);
    result = RegGetValueW(HKEY_CLASSES_ROOT, szExt, NULL, RRF_RT_REG_SZ, NULL, (LPBYTE)szBuffer, &dwBuffer);
    if (result == ERROR_SUCCESS)
    {
        Length = wcslen(szBuffer);
        if (Length + (sizeof(szShell) / sizeof(WCHAR)) + 1 < sizeof(szBuffer) / sizeof(WCHAR))
        {
            wcscpy(&szBuffer[Length], szShell);
            TRACE("szBuffer %s\n", debugstr_w(szBuffer));

            result = RegOpenKeyExW(HKEY_CLASSES_ROOT, szBuffer, 0, KEY_READ | KEY_QUERY_VALUE, &hKey);
            if (result == ERROR_SUCCESS)
            {
                szBuffer[Length] = 0;
                AddStaticEntryForKey(hKey, szBuffer);
                RegCloseKey(hKey);
            }
        }
    }

    wcscpy(szBuffer, szShellAssoc);
    dwBuffer = sizeof(szBuffer) - sizeof(szShellAssoc) - sizeof(WCHAR);
    result = RegGetValueW(HKEY_CLASSES_ROOT, szExt, L"PerceivedType", RRF_RT_REG_SZ, NULL, (LPBYTE)&szBuffer[_countof(szShellAssoc) - 1], &dwBuffer);
    if (result == ERROR_SUCCESS)
    {
        Length = wcslen(&szBuffer[_countof(szShellAssoc)]) + _countof(szShellAssoc);
        wcscat(szBuffer, L"\\shell");
        TRACE("szBuffer %s\n", debugstr_w(szBuffer));

        result = RegOpenKeyExW(HKEY_CLASSES_ROOT, szBuffer, 0, KEY_READ | KEY_QUERY_VALUE, &hKey);
        if (result == ERROR_SUCCESS)
        {
            szBuffer[Length] = 0;
            AddStaticEntryForKey(hKey, szBuffer);
            RegCloseKey(hKey);
        }
    }
}

static
BOOL
HasClipboardData()
{
    BOOL bRet = FALSE;
    IDataObject *pDataObj;

    if(SUCCEEDED(OleGetClipboard(&pDataObj)))
    {
        STGMEDIUM medium;
        FORMATETC formatetc;

        TRACE("pDataObj=%p\n", pDataObj);

        /* Set the FORMATETC structure*/
        InitFormatEtc(formatetc, RegisterClipboardFormatW(CFSTR_SHELLIDLIST), TYMED_HGLOBAL);
        if(SUCCEEDED(pDataObj->GetData(&formatetc, &medium)))
        {
            bRet = TRUE;
            ReleaseStgMedium(&medium);
        }

        pDataObj->Release();
    }

    return bRet;
}

static
VOID
DisablePasteOptions(HMENU hMenu)
{
    MENUITEMINFOW mii;

    mii.cbSize = sizeof(mii);
    mii.fMask = MIIM_STATE;
    mii.fState = MFS_DISABLED;

    TRACE("result %d\n", SetMenuItemInfoW(hMenu, FCIDM_SHVIEW_INSERT, FALSE, &mii));
    TRACE("result %d\n", SetMenuItemInfoW(hMenu, FCIDM_SHVIEW_INSERTLINK, FALSE, &mii));
}

BOOL
CDefaultContextMenu::IsShellExtensionAlreadyLoaded(const CLSID *pclsid)
{
    PDynamicShellEntry pEntry = m_pDynamicEntries;

    while (pEntry)
    {
        if (!memcmp(&pEntry->ClassID, pclsid, sizeof(CLSID)))
            return TRUE;
        pEntry = pEntry->pNext;
    }

    return FALSE;
}

HRESULT
CDefaultContextMenu::LoadDynamicContextMenuHandler(HKEY hKey, const CLSID *pclsid)
{
    HRESULT hr;

    TRACE("LoadDynamicContextMenuHandler entered with This %p hKey %p pclsid %s\n", this, hKey, wine_dbgstr_guid(pclsid));

    if (IsShellExtensionAlreadyLoaded(pclsid))
        return S_OK;

    IContextMenu *pcm;
    hr = SHCoCreateInstance(NULL, pclsid, NULL, IID_IContextMenu, (void**)&pcm);
    if (hr != S_OK)
    {
        ERR("SHCoCreateInstance failed %x\n", GetLastError());
        return hr;
    }

    IShellExtInit *pExtInit;
    hr = pcm->QueryInterface(IID_IShellExtInit, (void**)&pExtInit);
    if (hr != S_OK)
    {
        ERR("Failed to query for interface IID_IShellExtInit hr %x pclsid %s\n", hr, wine_dbgstr_guid(pclsid));
        pcm->Release();
        return hr;
    }

    hr = pExtInit->Initialize(m_pidlFolder, m_pDataObj, hKey);
    pExtInit->Release();
    if (hr != S_OK)
    {
        TRACE("Failed to initialize shell extension error %x pclsid %s\n", hr, wine_dbgstr_guid(pclsid));
        pcm->Release();
        return hr;
    }

    PDynamicShellEntry pEntry = (DynamicShellEntry *)HeapAlloc(GetProcessHeap(), 0, sizeof(DynamicShellEntry));
    if (!pEntry)
    {
        pcm->Release();
        return E_OUTOFMEMORY;
    }

    pEntry->iIdCmdFirst = 0;
    pEntry->pNext = NULL;
    pEntry->NumIds = 0;
    pEntry->pCM = pcm;
    memcpy(&pEntry->ClassID, pclsid, sizeof(CLSID));

    if (m_pDynamicEntries)
    {
        PDynamicShellEntry pLastEntry = m_pDynamicEntries;

        while (pLastEntry->pNext)
            pLastEntry = pLastEntry->pNext;

        pLastEntry->pNext = pEntry;
    }
    else
        m_pDynamicEntries = pEntry;

    return S_OK;
}

BOOL
CDefaultContextMenu::EnumerateDynamicContextHandlerForKey(HKEY hRootKey)
{
    
    WCHAR wszName[MAX_PATH], wszBuf[MAX_PATH], *pwszClsid;
    DWORD cchName;
    HRESULT hr;
    HKEY hKey;

    if (RegOpenKeyExW(hRootKey, L"shellex\\ContextMenuHandlers", 0, KEY_READ, &hKey) != ERROR_SUCCESS)
    {
        TRACE("RegOpenKeyExW failed\n");
        return FALSE;
    }

    DWORD dwIndex = 0;
    while (TRUE)
    {
        cchName = _countof(wszName);
        if (RegEnumKeyExW(hKey, dwIndex++, wszName, &cchName, NULL, NULL, NULL, NULL) != ERROR_SUCCESS)
            break;

        /* Key name or key value is CLSID */
        CLSID clsid;
        hr = CLSIDFromString(wszName, &clsid);
        if (hr == S_OK)
            pwszClsid = wszName;
        else
        {
            DWORD cchBuf = _countof(wszBuf);
            if (RegGetValueW(hKey, wszName, NULL, RRF_RT_REG_SZ, NULL, wszBuf, &cchBuf) == ERROR_SUCCESS)
                hr = CLSIDFromString(wszBuf, &clsid);
            pwszClsid = wszBuf;
        }
        if (SUCCEEDED(hr))
        {
            if (m_bGroupPolicyActive)
            {
                if (RegGetValueW(HKEY_LOCAL_MACHINE,
                                L"Software\\Microsoft\\Windows\\CurrentVersion\\Shell Extensions\\Approved",
                                pwszClsid,
                                RRF_RT_REG_SZ,
                                NULL,
                                NULL,
                                NULL) == ERROR_SUCCESS)
                {
                    LoadDynamicContextMenuHandler(hKey, &clsid);
                }
            }
            else
                LoadDynamicContextMenuHandler(hKey, &clsid);
        }
    }

    RegCloseKey(hKey);
    return TRUE;
}

UINT
CDefaultContextMenu::InsertMenuItemsOfDynamicContextMenuExtension(HMENU hMenu, UINT IndexMenu, UINT idCmdFirst, UINT idCmdLast)
{
    if (!m_pDynamicEntries)
    {
        m_iIdSHEFirst = 0;
        m_iIdSHELast = 0;
        return IndexMenu;
    }

    PDynamicShellEntry pEntry = m_pDynamicEntries;
    idCmdFirst = 0x5000;
    idCmdLast =  0x6000;
    m_iIdSHEFirst = idCmdFirst;
    do
    {
        HRESULT hr = pEntry->pCM->QueryContextMenu(hMenu, IndexMenu++, idCmdFirst, idCmdLast, CMF_NORMAL);
        if (SUCCEEDED(hr))
        {
            pEntry->iIdCmdFirst = idCmdFirst;
            pEntry->NumIds = LOWORD(hr);
            IndexMenu += pEntry->NumIds;
            idCmdFirst += pEntry->NumIds + 0x10;
        }
        TRACE("pEntry %p hr %x contextmenu %p cmdfirst %x num ids %x\n", pEntry, hr, pEntry->pCM, pEntry->iIdCmdFirst, pEntry->NumIds);
        pEntry = pEntry->pNext;
    } while (pEntry);

    m_iIdSHELast = idCmdFirst;
    TRACE("SH_LoadContextMenuHandlers first %x last %x\n", m_iIdSHEFirst, m_iIdSHELast);
    return IndexMenu;
}

UINT
CDefaultContextMenu::BuildBackgroundContextMenu(
    HMENU hMenu,
    UINT iIdCmdFirst,
    UINT iIdCmdLast,
    UINT uFlags)
{
    UINT IndexMenu = 0;
    HMENU hSubMenu;

    TRACE("BuildBackgroundContextMenu entered\n");

    if (!_ILIsDesktop(m_pidlFolder))
    {
        WCHAR wszBuf[MAX_PATH];

        /* view option is only available in browsing mode */
        hSubMenu = LoadMenuW(shell32_hInstance, L"MENU_001");
        if (hSubMenu && LoadStringW(shell32_hInstance, FCIDM_SHVIEW_VIEW, wszBuf, _countof(wszBuf)))
        {
            TRACE("wszBuf %s\n", debugstr_w(wszBuf));

            MENUITEMINFOW mii;
            ZeroMemory(&mii, sizeof(mii));
            mii.cbSize = sizeof(mii);
            mii.fMask = MIIM_TYPE | MIIM_STATE | MIIM_SUBMENU | MIIM_ID;
            mii.fType = MFT_STRING;
            mii.wID = iIdCmdFirst++;
            mii.dwTypeData = wszBuf;
            mii.cch = wcslen(mii.dwTypeData);
            mii.fState = MFS_ENABLED;
            mii.hSubMenu = hSubMenu;
            InsertMenuItemW(hMenu, IndexMenu++, TRUE, &mii);
            DestroyMenu(hSubMenu);
        }
    }

    hSubMenu = LoadMenuW(shell32_hInstance, L"MENU_002");
    if (hSubMenu)
    {
        /* merge general background context menu in */
        iIdCmdFirst = Shell_MergeMenus(hMenu, GetSubMenu(hSubMenu, 0), IndexMenu, 0, 0xFFFF, MM_DONTREMOVESEPS | MM_SUBMENUSHAVEIDS) + 1;
        DestroyMenu(hSubMenu);
    }

    if (!HasClipboardData())
    {
        TRACE("disabling paste options\n");
        DisablePasteOptions(hMenu);
    }

    /* Directory is progid of filesystem folders only */
    LPITEMIDLIST pidlFolderLast = ILFindLastID(m_pidlFolder);
    if (_ILIsDesktop(pidlFolderLast) || _ILIsDrive(pidlFolderLast) || _ILIsFolder(pidlFolderLast))
    {
        /* Load context menu handlers */
        TRACE("Add background handlers: %p\n", m_pidlFolder);
        HKEY hKey;
        if (RegOpenKeyExW(HKEY_CLASSES_ROOT, L"Directory\\Background", 0, KEY_READ, &hKey) == ERROR_SUCCESS)
        {
            EnumerateDynamicContextHandlerForKey(hKey);
            RegCloseKey(hKey);
        }

        if (InsertMenuItemsOfDynamicContextMenuExtension(hMenu, GetMenuItemCount(hMenu) - 1, iIdCmdFirst, iIdCmdLast))
        {
            /* seperate dynamic context menu items */
            _InsertMenuItemW(hMenu, GetMenuItemCount(hMenu) - 1, TRUE, -1, MFT_SEPARATOR, NULL, MFS_ENABLED);
        }
    }

    return iIdCmdLast;
}

UINT
CDefaultContextMenu::AddStaticContextMenusToMenu(
    HMENU hMenu,
    UINT IndexMenu)
{
    MENUITEMINFOW mii;
    UINT idResource;
    WCHAR wszVerb[40];
    UINT fState;

    mii.cbSize = sizeof(mii);
    mii.fMask = MIIM_ID | MIIM_TYPE | MIIM_STATE | MIIM_DATA;
    mii.fType = MFT_STRING;
    mii.wID = 0x4000;
    mii.dwTypeData = NULL;
    m_iIdSCMFirst = mii.wID;

    PStaticShellEntry pEntry = m_pStaticEntries;

    while (pEntry)
    {
        fState = MFS_ENABLED;
        mii.dwTypeData = NULL;

        if (!wcsicmp(pEntry->szVerb, L"open"))
        {
            fState |= MFS_DEFAULT;
            idResource = IDS_OPEN_VERB;
        }
        else if (!wcsicmp(pEntry->szVerb, L"explore"))
            idResource = IDS_EXPLORE_VERB;
        else if (!wcsicmp(pEntry->szVerb, L"runas"))
            idResource = IDS_RUNAS_VERB;
        else if (!wcsicmp(pEntry->szVerb, L"edit"))
            idResource = IDS_EDIT_VERB;
        else if (!wcsicmp(pEntry->szVerb, L"find"))
            idResource = IDS_FIND_VERB;
        else if (!wcsicmp(pEntry->szVerb, L"print"))
            idResource = IDS_PRINT_VERB;
        else if (!wcsicmp(pEntry->szVerb, L"printto"))
        {
            pEntry = pEntry->pNext;
            continue;
        }
        else
            idResource = 0;

        /* By default use verb for menu item name */
        mii.dwTypeData = pEntry->szVerb;

        if (idResource > 0)
        {
            if (LoadStringW(shell32_hInstance, idResource, wszVerb, _countof(wszVerb)))
                mii.dwTypeData = wszVerb; /* use translated verb */
            else
                ERR("Failed to load string\n");
        }
        else
        {
            WCHAR wszKey[256];
            HRESULT hr = StringCbPrintfW(wszKey, sizeof(wszKey), L"%s\\shell\\%s", pEntry->szClass, pEntry->szVerb);
            
            if (SUCCEEDED(hr))
            {
                DWORD cbVerb = sizeof(wszVerb);

                if (RegGetValueW(HKEY_CLASSES_ROOT, wszKey, NULL, RRF_RT_REG_SZ, NULL, wszVerb, &cbVerb) == ERROR_SUCCESS)
                    mii.dwTypeData = wszVerb; /* use description for the menu entry */
            }
        }

        mii.cch = wcslen(mii.dwTypeData);
        mii.fState = fState;
        InsertMenuItemW(hMenu, IndexMenu++, TRUE, &mii);

        mii.wID++;
        pEntry = pEntry->pNext;
    }

    m_iIdSCMLast = mii.wID - 1;
    return IndexMenu;
}

void WINAPI _InsertMenuItemW(
    HMENU hMenu,
    UINT indexMenu,
    BOOL fByPosition,
    UINT wID,
    UINT fType,
    LPCWSTR dwTypeData,
    UINT fState)
{
    MENUITEMINFOW mii;
    WCHAR wszText[100];

    ZeroMemory(&mii, sizeof(mii));
    mii.cbSize = sizeof(mii);
    if (fType == MFT_SEPARATOR)
        mii.fMask = MIIM_ID | MIIM_TYPE;
    else if (fType == MFT_STRING)
    {
        mii.fMask = MIIM_ID | MIIM_TYPE | MIIM_STATE;
        if ((ULONG_PTR)HIWORD((ULONG_PTR)dwTypeData) == 0)
        {
            if (LoadStringW(shell32_hInstance, LOWORD((ULONG_PTR)dwTypeData), wszText, _countof(wszText)))
                mii.dwTypeData = wszText;
            else
            {
                ERR("failed to load string %p\n", dwTypeData);
                return;
            }
        }
        else
            mii.dwTypeData = (LPWSTR)dwTypeData;
        mii.fState = fState;
    }

    mii.wID = wID;
    mii.fType = fType;
    InsertMenuItemW(hMenu, indexMenu, fByPosition, &mii);
}

UINT
CDefaultContextMenu::BuildShellItemContextMenu(
    HMENU hMenu,
    UINT iIdCmdFirst,
    UINT iIdCmdLast,
    UINT uFlags)
{
    HKEY hKey;
    HRESULT hr;

    TRACE("BuildShellItemContextMenu entered\n");
    ASSERT(m_Dcm.cidl >= 1);

    STRRET strFile;
    hr = m_Dcm.psf->GetDisplayNameOf(m_Dcm.apidl[0], SHGDN_FORPARSING, &strFile);
    if (hr == S_OK)
    {
        WCHAR wszPath[MAX_PATH];
        hr = StrRetToBufW(&strFile, m_Dcm.apidl[0], wszPath, _countof(wszPath));
        if (hr == S_OK)
        {
            LPCWSTR pwszExt = PathFindExtensionW(wszPath);
            if (pwszExt[0])
            {
                /* enumerate dynamic/static for a given file class */
                if (RegOpenKeyExW(HKEY_CLASSES_ROOT, pwszExt, 0, KEY_READ, &hKey) == ERROR_SUCCESS)
                {
                    /* add static verbs */
                    AddStaticEntryForFileClass(pwszExt);

                    /* load dynamic extensions from file extension key */
                    EnumerateDynamicContextHandlerForKey(hKey);
                    RegCloseKey(hKey);
                }

                WCHAR wszTemp[40];
                DWORD dwSize = sizeof(wszTemp);
                if (RegGetValueW(HKEY_CLASSES_ROOT, pwszExt, NULL, RRF_RT_REG_SZ, NULL, wszTemp, &dwSize) == ERROR_SUCCESS)
                {
                    if (RegOpenKeyExW(HKEY_CLASSES_ROOT, wszTemp, 0, KEY_READ, &hKey) == ERROR_SUCCESS)
                    {
                        /* add static verbs from progid key */
                        AddStaticEntryForFileClass(wszTemp);

                        /* load dynamic extensions from progid key */
                        EnumerateDynamicContextHandlerForKey(hKey);
                        RegCloseKey(hKey);
                    }
                }
            }

            if (RegOpenKeyExW(HKEY_CLASSES_ROOT, L"*", 0, KEY_READ, &hKey) == ERROR_SUCCESS)
            {
                /* load default extensions */
                EnumerateDynamicContextHandlerForKey(hKey);
                RegCloseKey(hKey);
            }
        }
    }
    else
        ERR("GetDisplayNameOf failed: %x\n", hr);

    GUID *pGuid = _ILGetGUIDPointer(m_Dcm.apidl[0]);
    if (pGuid)
    {
        LPOLESTR pwszCLSID;
        WCHAR buffer[60];

        wcscpy(buffer, L"CLSID\\");
        hr = StringFromCLSID(*pGuid, &pwszCLSID);
        if (hr == S_OK)
        {
            wcscpy(&buffer[6], pwszCLSID);
            TRACE("buffer %s\n", debugstr_w(buffer));
            if (RegOpenKeyExW(HKEY_CLASSES_ROOT, buffer, 0, KEY_READ, &hKey) == ERROR_SUCCESS)
            {
                EnumerateDynamicContextHandlerForKey(hKey);
                AddStaticEntryForFileClass(buffer);
                RegCloseKey(hKey);
            }
            CoTaskMemFree(pwszCLSID);
        }
    }

    if (_ILIsDrive(m_Dcm.apidl[0]))
    {
        AddStaticEntryForFileClass(L"Drive");
        if (RegOpenKeyExW(HKEY_CLASSES_ROOT, L"Drive", 0, KEY_READ, &hKey) == ERROR_SUCCESS)
        {
            EnumerateDynamicContextHandlerForKey(hKey);
            RegCloseKey(hKey);
        }

    }

    /* add static actions */
    SFGAOF rfg = SFGAO_BROWSABLE | SFGAO_CANCOPY | SFGAO_CANLINK | SFGAO_CANMOVE | SFGAO_CANDELETE | SFGAO_CANRENAME | SFGAO_HASPROPSHEET | SFGAO_FILESYSTEM | SFGAO_FOLDER;
    hr = m_Dcm.psf->GetAttributesOf(m_Dcm.cidl, m_Dcm.apidl, &rfg);
    if (FAILED(hr))
    {
        ERR("GetAttributesOf failed: %x\n", hr);
        rfg = 0;
    }

    if (rfg & SFGAO_FOLDER)
    {
        /* add the default verbs open / explore */
        AddStaticEntryForFileClass(L"Folder");
        if (RegOpenKeyExW(HKEY_CLASSES_ROOT, L"Folder", 0, KEY_READ, &hKey) == ERROR_SUCCESS)
        {
            EnumerateDynamicContextHandlerForKey(hKey);
            RegCloseKey(hKey);
        }

        /* Directory is only loaded for real filesystem directories */
        if (_ILIsFolder(m_Dcm.apidl[0]))
        {
            AddStaticEntryForFileClass(L"Directory");
            if (RegOpenKeyExW(HKEY_CLASSES_ROOT, L"Directory", 0, KEY_READ, &hKey) == ERROR_SUCCESS)
            {
                EnumerateDynamicContextHandlerForKey(hKey);
                RegCloseKey(hKey);
            }
        }
    }

    /* AllFilesystemObjects class is loaded only for files and directories */
    if (_ILIsFolder(m_Dcm.apidl[0]) || _ILIsValue(m_Dcm.apidl[0]))
    {
        if (RegOpenKeyExW(HKEY_CLASSES_ROOT, L"AllFilesystemObjects", 0, KEY_READ, &hKey) == ERROR_SUCCESS)
        {
            /* sendto service is registered here */
            EnumerateDynamicContextHandlerForKey(hKey);
            RegCloseKey(hKey);
        }
    }

    /* add static context menu handlers */
    UINT IndexMenu = AddStaticContextMenusToMenu(hMenu, 0);

    /* now process dynamic context menu handlers */
    BOOL bAddSep = FALSE;
    IndexMenu = InsertMenuItemsOfDynamicContextMenuExtension(hMenu, IndexMenu, iIdCmdFirst, iIdCmdLast);
    TRACE("IndexMenu %d\n", IndexMenu);

    if (_ILIsDrive(m_Dcm.apidl[0]))
    {
        /* The 'Format' option must be always available,
         * thus it is not registered as a static shell extension */
        _InsertMenuItemW(hMenu, IndexMenu++, TRUE, 0, MFT_SEPARATOR, NULL, 0);
        _InsertMenuItemW(hMenu, IndexMenu++, TRUE, 0x7ABC, MFT_STRING, MAKEINTRESOURCEW(IDS_FORMATDRIVE), MFS_ENABLED);
        bAddSep = TRUE;
    }

    BOOL bClipboardData = (HasClipboardData() && (rfg & SFGAO_FILESYSTEM));
    if (rfg & (SFGAO_CANCOPY | SFGAO_CANMOVE) || bClipboardData)
    {
        _InsertMenuItemW(hMenu, IndexMenu++, TRUE, 0, MFT_SEPARATOR, NULL, 0);
        if (rfg & SFGAO_CANMOVE)
            _InsertMenuItemW(hMenu, IndexMenu++, TRUE, FCIDM_SHVIEW_CUT, MFT_STRING, MAKEINTRESOURCEW(IDS_CUT), MFS_ENABLED);
        if (rfg & SFGAO_CANCOPY)
            _InsertMenuItemW(hMenu, IndexMenu++, TRUE, FCIDM_SHVIEW_COPY, MFT_STRING, MAKEINTRESOURCEW(IDS_COPY), MFS_ENABLED);
        if (bClipboardData)
            _InsertMenuItemW(hMenu, IndexMenu++, TRUE, FCIDM_SHVIEW_INSERT, MFT_STRING, MAKEINTRESOURCEW(IDS_INSERT), MFS_ENABLED);

        bAddSep = TRUE;
    }

    if (rfg & SFGAO_CANLINK)
    {
        bAddSep = FALSE;
        _InsertMenuItemW(hMenu, IndexMenu++, TRUE, 0, MFT_SEPARATOR, NULL, 0);
        _InsertMenuItemW(hMenu, IndexMenu++, TRUE, FCIDM_SHVIEW_CREATELINK, MFT_STRING, MAKEINTRESOURCEW(IDS_CREATELINK), MFS_ENABLED);
    }

    if (rfg & SFGAO_CANDELETE)
    {
        if (bAddSep)
        {
            bAddSep = FALSE;
            _InsertMenuItemW(hMenu, IndexMenu++, TRUE, 0, MFT_SEPARATOR, NULL, 0);
        }
        _InsertMenuItemW(hMenu, IndexMenu++, TRUE, FCIDM_SHVIEW_DELETE, MFT_STRING, MAKEINTRESOURCEW(IDS_DELETE), MFS_ENABLED);
    }

    if (rfg & SFGAO_CANRENAME)
    {
        if (bAddSep)
        {
            _InsertMenuItemW(hMenu, IndexMenu++, TRUE, 0, MFT_SEPARATOR, NULL, 0);
        }
        _InsertMenuItemW(hMenu, IndexMenu++, TRUE, FCIDM_SHVIEW_RENAME, MFT_STRING, MAKEINTRESOURCEW(IDS_RENAME), MFS_ENABLED);
        bAddSep = TRUE;
    }

    if (rfg & SFGAO_HASPROPSHEET)
    {
        _InsertMenuItemW(hMenu, IndexMenu++, TRUE, 0, MFT_SEPARATOR, NULL, 0);
        _InsertMenuItemW(hMenu, IndexMenu++, TRUE, FCIDM_SHVIEW_PROPERTIES, MFT_STRING, MAKEINTRESOURCEW(IDS_PROPERTIES), MFS_ENABLED);
    }

    return iIdCmdLast;
}

HRESULT
WINAPI
CDefaultContextMenu::QueryContextMenu(
    HMENU hMenu,
    UINT IndexMenu,
    UINT idCmdFirst,
    UINT idCmdLast,
    UINT uFlags)
{
    if (m_Dcm.cidl)
        idCmdFirst = BuildShellItemContextMenu(hMenu, idCmdFirst, idCmdLast, uFlags);
    else
        idCmdFirst = BuildBackgroundContextMenu(hMenu, idCmdFirst, idCmdLast, uFlags);

    return S_OK;
}

static
HRESULT
NotifyShellViewWindow(LPCMINVOKECOMMANDINFO lpcmi, BOOL bRefresh)
{
    /* Note: CWM_GETISHELLBROWSER returns not referenced object */
    LPSHELLBROWSER lpSB = (LPSHELLBROWSER)SendMessageA(lpcmi->hwnd, CWM_GETISHELLBROWSER, 0, 0);
    if (!lpSB)
        return E_FAIL;

    LPSHELLVIEW lpSV = NULL;
    if (FAILED(lpSB->QueryActiveShellView(&lpSV)))
        return E_FAIL;

    if (LOWORD(lpcmi->lpVerb) == FCIDM_SHVIEW_REFRESH || bRefresh)
        lpSV->Refresh();
    else
    {
        HWND hwndSV = NULL;
        if (SUCCEEDED(lpSV->GetWindow(&hwndSV)))
            SendMessageW(hwndSV, WM_COMMAND, MAKEWPARAM(LOWORD(lpcmi->lpVerb), 0), 0);
    }

    lpSV->Release();
    return S_OK;
}

HRESULT
CDefaultContextMenu::DoPaste(
    LPCMINVOKECOMMANDINFO lpcmi)
{
    HRESULT hr;

    IDataObject *pda;
    if (OleGetClipboard(&pda) != S_OK)
        return E_FAIL;

    STGMEDIUM medium;
    FORMATETC formatetc;
    InitFormatEtc(formatetc, RegisterClipboardFormatW(CFSTR_SHELLIDLIST), TYMED_HGLOBAL);
    hr = pda->GetData(&formatetc, &medium);

    if (FAILED(hr))
    {
        pda->Release();
        return E_FAIL;
    }

    /* lock the handle */
    LPIDA lpcida = (LPIDA)GlobalLock(medium.hGlobal);
    if (!lpcida)
    {
        ReleaseStgMedium(&medium);
        pda->Release();
        return E_FAIL;
    }

    /* convert the data into pidl */
    LPITEMIDLIST pidl;
    LPITEMIDLIST *apidl = _ILCopyCidaToaPidl(&pidl, lpcida);

    if (!apidl)
        return E_FAIL;

    IShellFolder *psfDesktop;
    if (FAILED(SHGetDesktopFolder(&psfDesktop)))
    {
        SHFree(pidl);
        _ILFreeaPidl(apidl, lpcida->cidl);
        ReleaseStgMedium(&medium);
        pda->Release();
        return E_FAIL;
    }

    /* Find source folder */
    IShellFolder *psfFrom = NULL;
    if (_ILIsDesktop(pidl))
    {
        /* use desktop shellfolder */
        psfFrom = psfDesktop;
    }
    else if (FAILED(psfDesktop->BindToObject(pidl, NULL, IID_IShellFolder, (LPVOID*)&psfFrom)))
    {
        ERR("no IShellFolder\n");

        psfDesktop->Release();
        SHFree(pidl);
        _ILFreeaPidl(apidl, lpcida->cidl);
        ReleaseStgMedium(&medium);
        pda->Release();

        return E_FAIL;
    }

    /* Find target folder */
    IShellFolder *psfTarget = NULL;
    if (m_Dcm.cidl)
    {
        psfDesktop->Release();
        hr = m_Dcm.psf->BindToObject(m_Dcm.apidl[0], NULL, IID_IShellFolder, (LPVOID*)&psfTarget);
    }
    else
    {
        IPersistFolder2 *ppf2 = NULL;
        LPITEMIDLIST pidl;

        /* cidl is zero due to explorer view */
        hr = m_Dcm.psf->QueryInterface(IID_IPersistFolder2, (LPVOID *) &ppf2);
        if (SUCCEEDED(hr))
        {
            hr = ppf2->GetCurFolder(&pidl);
            ppf2->Release();
            if (SUCCEEDED(hr))
            {
                if (_ILIsDesktop(pidl))
                {
                    /* use desktop shellfolder */
                    psfTarget = psfDesktop;
                }
                else
                {
                    /* retrieve target desktop folder */
                    hr = psfDesktop->BindToObject(pidl, NULL, IID_IShellFolder, (LPVOID*)&psfTarget);
                }
                TRACE("psfTarget %x %p, Desktop %u\n", hr, psfTarget, _ILIsDesktop(pidl));
                ILFree(pidl);
            }
        }
    }

    if (FAILED(hr))
    {
        ERR("no IShellFolder\n");

        psfFrom->Release();
        SHFree(pidl);
        _ILFreeaPidl(apidl, lpcida->cidl);
        ReleaseStgMedium(&medium);
        pda->Release();

        return E_FAIL;
    }

    /* get source and destination shellfolder */
    ISFHelper *psfhlpdst;
    if (FAILED(psfTarget->QueryInterface(IID_ISFHelper, (LPVOID*)&psfhlpdst)))
    {
        ERR("no IID_ISFHelper for destination\n");

        psfFrom->Release();
        psfTarget->Release();
        SHFree(pidl);
        _ILFreeaPidl(apidl, lpcida->cidl);
        ReleaseStgMedium(&medium);
        pda->Release();

        return E_FAIL;
    }

    ISFHelper *psfhlpsrc;
    if (FAILED(psfFrom->QueryInterface(IID_ISFHelper, (LPVOID*)&psfhlpsrc)))
    {
        ERR("no IID_ISFHelper for source\n");

        psfhlpdst->Release();
        psfFrom->Release();
        psfTarget->Release();
        SHFree(pidl);
        _ILFreeaPidl(apidl, lpcida->cidl);
        ReleaseStgMedium(&medium);
        pda->Release();
        return E_FAIL;
    }

    /* FIXXME
     * do we want to perform a copy or move ???
     */
    hr = psfhlpdst->CopyItems(psfFrom, lpcida->cidl, (LPCITEMIDLIST*)apidl);

    psfhlpdst->Release();
    psfhlpsrc->Release();
    psfFrom->Release();
    psfTarget->Release();
    SHFree(pidl);
    _ILFreeaPidl(apidl, lpcida->cidl);
    ReleaseStgMedium(&medium);
    pda->Release();
    TRACE("CP result %x\n", hr);
    return S_OK;
}

HRESULT
CDefaultContextMenu::DoOpenOrExplore(
    LPCMINVOKECOMMANDINFO lpcmi)
{
    UNIMPLEMENTED;
    return E_FAIL;
}

BOOL
GetUniqueFileName(LPWSTR pwszBasePath, LPCWSTR pwszExt, LPWSTR pwszTarget, BOOL bShortcut)
{
    WCHAR wszLink[40];

    if (!bShortcut)
    {
        if (!LoadStringW(shell32_hInstance, IDS_LNK_FILE, wszLink, _countof(wszLink)))
            wszLink[0] = L'\0';
    }

    if (!bShortcut)
        swprintf(pwszTarget, L"%s%s%s", wszLink, pwszBasePath, pwszExt);
    else
        swprintf(pwszTarget, L"%s%s", pwszBasePath, pwszExt);

    for (UINT i = 2; PathFileExistsW(pwszTarget); ++i)
    {
        if (!bShortcut)
            swprintf(pwszTarget, L"%s%s (%u)%s", wszLink, pwszBasePath, i, pwszExt);
        else
            swprintf(pwszTarget, L"%s (%u)%s", pwszBasePath, i, pwszExt);
    }

    return TRUE;

}

HRESULT
CDefaultContextMenu::DoCreateLink(
    LPCMINVOKECOMMANDINFO lpcmi)
{
    WCHAR wszTarget[MAX_PATH];
    IPersistFile *ppf;
    HRESULT hr;
    STRRET strFile;

    if (m_Dcm.psf->GetDisplayNameOf(m_Dcm.apidl[0], SHGDN_FORPARSING, &strFile) != S_OK)
    {
        ERR("IShellFolder_GetDisplayNameOf failed for apidl\n");
        return E_FAIL;
    }

    WCHAR wszPath[MAX_PATH];
    if (StrRetToBufW(&strFile, m_Dcm.apidl[0], wszPath, _countof(wszPath)) != S_OK)
        return E_FAIL;

    LPWSTR pwszExt = PathFindExtensionW(wszPath);

    if (!wcsicmp(pwszExt, L".lnk"))
    {
        if (!GetUniqueFileName(wszPath, pwszExt, wszTarget, TRUE))
            return E_FAIL;

        hr = IShellLink_ConstructFromFile(NULL, IID_IPersistFile, m_Dcm.apidl[0], (LPVOID*)&ppf);
        if (hr != S_OK)
            return hr;

        hr = ppf->Save(wszTarget, FALSE);
        ppf->Release();
        NotifyShellViewWindow(lpcmi, TRUE);
        return hr;
    }
    else
    {
        if (!GetUniqueFileName(wszPath, L".lnk", wszTarget, TRUE))
            return E_FAIL;

        IShellLinkW *pLink;
        hr = CShellLink::_CreatorClass::CreateInstance(NULL, IID_IShellLinkW, (void**)&pLink);
        if (hr != S_OK)
            return hr;

        WCHAR szDirPath[MAX_PATH], *pwszFile;
        GetFullPathName(wszPath, MAX_PATH, szDirPath, &pwszFile);
        if (pwszFile) pwszFile[0] = 0;

        if (SUCCEEDED(pLink->SetPath(wszPath)) &&
            SUCCEEDED(pLink->SetWorkingDirectory(szDirPath)))
        {
            if (SUCCEEDED(pLink->QueryInterface(IID_IPersistFile, (LPVOID*)&ppf)))
            {
                hr = ppf->Save(wszTarget, TRUE);
                ppf->Release();
            }
        }
        pLink->Release();
        NotifyShellViewWindow(lpcmi, TRUE);
        return hr;
    }
}

HRESULT
CDefaultContextMenu::DoDelete(
    LPCMINVOKECOMMANDINFO lpcmi)
{
    STRRET strTemp;
    HRESULT hr = m_Dcm.psf->GetDisplayNameOf(m_Dcm.apidl[0], SHGDN_FORPARSING, &strTemp);
    if(hr != S_OK)
    {
        ERR("IShellFolder_GetDisplayNameOf failed with %x\n", hr);
        return hr;
    }

    WCHAR wszPath[MAX_PATH];
    hr = StrRetToBufW(&strTemp, m_Dcm.apidl[0], wszPath, _countof(wszPath));
    if (hr != S_OK)
    {
        ERR("StrRetToBufW failed with %x\n", hr);
        return hr;
    }

    /* Only keep the base path */
    LPWSTR pwszFilename = PathFindFileNameW(wszPath);
    *pwszFilename = L'\0';

    /* Build paths list */
    LPWSTR pwszPaths = BuildPathsList(wszPath, m_Dcm.cidl, m_Dcm.apidl);
    if (!pwszPaths)
        return E_FAIL;

    /* Delete them */
    SHFILEOPSTRUCTW FileOp;
    ZeroMemory(&FileOp, sizeof(FileOp));
    FileOp.hwnd = GetActiveWindow();
    FileOp.wFunc = FO_DELETE;
    FileOp.pFrom = pwszPaths;
    FileOp.fFlags = FOF_ALLOWUNDO;

    if (SHFileOperationW(&FileOp) != 0)
    {
        ERR("SHFileOperation failed with 0x%x for %s\n", GetLastError(), debugstr_w(pwszPaths));
        return S_OK;
    }

    /* Get the active IShellView */
    LPSHELLBROWSER lpSB = (LPSHELLBROWSER)SendMessageW(lpcmi->hwnd, CWM_GETISHELLBROWSER, 0, 0);
    if (lpSB)
    {
        /* Is the treeview focused */
        HWND hwnd;
        if (SUCCEEDED(lpSB->GetControlWindow(FCW_TREE, &hwnd)))
        {
            /* Remove selected items from treeview */
            HTREEITEM hItem = TreeView_GetSelection(hwnd);
            if (hItem)
                (void)TreeView_DeleteItem(hwnd, hItem);
        }
    }
    NotifyShellViewWindow(lpcmi, TRUE);

    HeapFree(GetProcessHeap(), 0, pwszPaths);
    return S_OK;

}

HRESULT
CDefaultContextMenu::DoCopyOrCut(
    LPCMINVOKECOMMANDINFO lpcmi,
    BOOL bCopy)
{
    LPDATAOBJECT pDataObj;
    HRESULT hr;

    if (SUCCEEDED(SHCreateDataObject(m_Dcm.pidlFolder, m_Dcm.cidl, m_Dcm.apidl, NULL, IID_IDataObject, (void**)&pDataObj)))
    {
        hr = OleSetClipboard(pDataObj);
        pDataObj->Release();
        return hr;
    }

    /* Note: CWM_GETISHELLBROWSER returns not referenced object */
    LPSHELLBROWSER lpSB = (LPSHELLBROWSER)SendMessageA(lpcmi->hwnd, CWM_GETISHELLBROWSER, 0, 0);
    if (!lpSB)
    {
        ERR("failed to get shellbrowser\n");
        return E_FAIL;
    }

    LPSHELLVIEW lpSV;
    hr = lpSB->QueryActiveShellView(&lpSV);
    if (FAILED(hr))
    {
        ERR("failed to query the active shellview\n");
        return hr;
    }

    hr = lpSV->GetItemObject(SVGIO_SELECTION, IID_IDataObject, (LPVOID*)&pDataObj);
    if (SUCCEEDED(hr))
    {
        hr = OleSetClipboard(pDataObj);
        if (FAILED(hr))
            ERR("OleSetClipboard failed");
        pDataObj->Release();
    } else
        ERR("failed to get item object\n");

    lpSV->Release();
    return hr;
}

HRESULT
CDefaultContextMenu::DoRename(
    LPCMINVOKECOMMANDINFO lpcmi)
{
    /* get the active IShellView. Note: CWM_GETISHELLBROWSER returns not referenced object */
    LPSHELLBROWSER lpSB = (LPSHELLBROWSER)SendMessageA(lpcmi->hwnd, CWM_GETISHELLBROWSER, 0, 0);
    if (!lpSB)
    {
        ERR("CWM_GETISHELLBROWSER failed\n");
        return E_FAIL;
    }

    /* is the treeview focused */
    HWND hwnd;
    if (SUCCEEDED(lpSB->GetControlWindow(FCW_TREE, &hwnd)))
    {
        HTREEITEM hItem = TreeView_GetSelection(hwnd);
        if (hItem)
            (void)TreeView_EditLabel(hwnd, hItem);
    }

    LPSHELLVIEW lpSV;
    HRESULT hr = lpSB->QueryActiveShellView(&lpSV);
    if (FAILED(hr))
    {
        ERR("CWM_GETISHELLBROWSER failed\n");
        return hr;
    }

    lpSV->SelectItem(m_Dcm.apidl[0],
                     SVSI_DESELECTOTHERS | SVSI_EDIT | SVSI_ENSUREVISIBLE | SVSI_FOCUSED | SVSI_SELECT);
    lpSV->Release();
    return S_OK;
}

HRESULT
CDefaultContextMenu::DoProperties(
    LPCMINVOKECOMMANDINFO lpcmi)
{
    HRESULT hr = S_OK;
    const ITEMIDLIST *pidlParent = m_Dcm.pidlFolder, *pidlChild;

    if (!pidlParent)
    {
        IPersistFolder2 *pf;
        
        /* pidlFolder is optional */
        if (SUCCEEDED(m_Dcm.psf->QueryInterface(IID_IPersistFolder2, (PVOID*)&pf)))
        {
            pf->GetCurFolder((_ITEMIDLIST**)&pidlParent);
            pf->Release();
        }
    }

    if (m_Dcm.cidl > 0)
        pidlChild = m_Dcm.apidl[0];
    else
    {
        /* Set pidlChild to last pidl of current folder */
        if (pidlParent == m_Dcm.pidlFolder)
            pidlParent = (ITEMIDLIST*)ILClone(pidlParent);

        pidlChild = (ITEMIDLIST*)ILClone(ILFindLastID(pidlParent));
        ILRemoveLastID((ITEMIDLIST*)pidlParent);
    }

    if (_ILIsMyComputer(pidlChild))
    {
        if (32 >= (UINT)ShellExecuteW(lpcmi->hwnd, L"open", L"rundll32.exe shell32.dll,Control_RunDLL sysdm.cpl", NULL, NULL, SW_SHOWNORMAL))
            hr = E_FAIL;
    }
    else if (_ILIsDesktop(pidlChild))
    {
        if (32 >= (UINT)ShellExecuteW(lpcmi->hwnd, L"open", L"rundll32.exe shell32.dll,Control_RunDLL desk.cpl", NULL, NULL, SW_SHOWNORMAL))
            hr = E_FAIL;
    }
    else if (_ILIsDrive(pidlChild))
    {
        WCHAR wszBuf[MAX_PATH];
        ILGetDisplayName(pidlChild, wszBuf);
        if (!SH_ShowDriveProperties(wszBuf, pidlParent, &pidlChild))
            hr = E_FAIL;
    }
    else if (_ILIsNetHood(pidlChild))
    {
        // FIXME path!
        if (32 >= (UINT)ShellExecuteW(NULL, L"open", L"explorer.exe",
                                      L"::{7007ACC7-3202-11D1-AAD2-00805FC1270E}",
                                      NULL, SW_SHOWDEFAULT))
            hr = E_FAIL;
    }
    else if (_ILIsBitBucket(pidlChild))
    {
        /* FIXME: detect the drive path of bitbucket if appropiate */
        if(!SH_ShowRecycleBinProperties(L'C'))
            hr = E_FAIL;
    }
    else
    {
        if (m_Dcm.cidl > 1)
            WARN("SHMultiFileProperties is not yet implemented\n");

        STRRET strFile;
        hr = m_Dcm.psf->GetDisplayNameOf(pidlChild, SHGDN_FORPARSING, &strFile);
        if (SUCCEEDED(hr))
        {
            WCHAR wszBuf[MAX_PATH];
            hr = StrRetToBufW(&strFile, pidlChild, wszBuf, _countof(wszBuf));
            if (SUCCEEDED(hr))
                hr = SH_ShowPropertiesDialog(wszBuf, pidlParent, &pidlChild);
            else
                ERR("StrRetToBufW failed\n");
        }
        else
            ERR("IShellFolder_GetDisplayNameOf failed for apidl\n");
    }

    /* Free allocated PIDLs */
    if (pidlParent != m_Dcm.pidlFolder)
        ILFree((ITEMIDLIST*)pidlParent);
    if (m_Dcm.cidl < 1 || pidlChild != m_Dcm.apidl[0])
        ILFree((ITEMIDLIST*)pidlChild);

    return hr;
}

HRESULT
CDefaultContextMenu::DoFormat(
    LPCMINVOKECOMMANDINFO lpcmi)
{
    char szDrive[8] = {0};

    if (!_ILGetDrive(m_Dcm.apidl[0], szDrive, sizeof(szDrive)))
    {
        ERR("pidl is not a drive\n");
        return E_FAIL;
    }

    SHFormatDrive(lpcmi->hwnd, szDrive[0] - 'A', SHFMT_ID_DEFAULT, 0);
    return S_OK;
}

HRESULT
CDefaultContextMenu::DoDynamicShellExtensions(
    LPCMINVOKECOMMANDINFO lpcmi)
{
    UINT idCmd = LOWORD(lpcmi->lpVerb);
    PDynamicShellEntry pEntry = m_pDynamicEntries;

    TRACE("verb %p first %x last %x", lpcmi->lpVerb, m_iIdSHEFirst, m_iIdSHELast);

    while(pEntry && idCmd > pEntry->iIdCmdFirst + pEntry->NumIds)
        pEntry = pEntry->pNext;

    if (!pEntry)
        return E_FAIL;

    if (idCmd >= pEntry->iIdCmdFirst && idCmd <= pEntry->iIdCmdFirst + pEntry->NumIds)
    {
        /* invoke the dynamic context menu */
        lpcmi->lpVerb = MAKEINTRESOURCEA(idCmd - pEntry->iIdCmdFirst);
        return pEntry->pCM->InvokeCommand(lpcmi);
    }

    return E_FAIL;
}


HRESULT
CDefaultContextMenu::DoStaticShellExtensions(
    LPCMINVOKECOMMANDINFO lpcmi)
{
    PStaticShellEntry pEntry = m_pStaticEntries;
    INT iCmd = LOWORD(lpcmi->lpVerb) - m_iIdSCMFirst;
    HRESULT hr;

    while (pEntry && (iCmd--) > 0)
        pEntry = pEntry->pNext;

    if (iCmd > 0)
        return E_FAIL;

    STRRET strFile;
    hr = m_Dcm.psf->GetDisplayNameOf(m_Dcm.apidl[0], SHGDN_FORPARSING, &strFile);
    if (hr != S_OK)
    {
        ERR("IShellFolder_GetDisplayNameOf failed for apidl\n");
        return hr;
    }

    WCHAR wszPath[MAX_PATH];
    hr = StrRetToBufW(&strFile, m_Dcm.apidl[0], wszPath, MAX_PATH);
    if (hr != S_OK)
        return hr;

    WCHAR wszDir[MAX_PATH];
    wcscpy(wszDir, wszPath);
    PathRemoveFileSpec(wszDir);

    SHELLEXECUTEINFOW sei;
    ZeroMemory(&sei, sizeof(sei));
    sei.cbSize = sizeof(sei);
    sei.fMask = SEE_MASK_CLASSNAME;
    sei.lpClass = pEntry->szClass;
    sei.hwnd = lpcmi->hwnd;
    sei.nShow = SW_SHOWNORMAL;
    sei.lpVerb = pEntry->szVerb;
    sei.lpFile = wszPath;
    sei.lpDirectory = wszDir;
    ShellExecuteExW(&sei);
    return S_OK;
}

HRESULT
WINAPI
CDefaultContextMenu::InvokeCommand(
    LPCMINVOKECOMMANDINFO lpcmi)
{
    switch(LOWORD(lpcmi->lpVerb))
    {
        case FCIDM_SHVIEW_BIGICON:
        case FCIDM_SHVIEW_SMALLICON:
        case FCIDM_SHVIEW_LISTVIEW:
        case FCIDM_SHVIEW_REPORTVIEW:
        case 0x30: /* FIX IDS in resource files */
        case 0x31:
        case 0x32:
        case 0x33:
        case FCIDM_SHVIEW_AUTOARRANGE:
        case FCIDM_SHVIEW_SNAPTOGRID:
        case FCIDM_SHVIEW_REFRESH:
            return NotifyShellViewWindow(lpcmi, FALSE);
        case FCIDM_SHVIEW_INSERT:
        case FCIDM_SHVIEW_INSERTLINK:
            return DoPaste(lpcmi);
        case FCIDM_SHVIEW_OPEN:
        case FCIDM_SHVIEW_EXPLORE:
            return DoOpenOrExplore(lpcmi);
        case FCIDM_SHVIEW_COPY:
        case FCIDM_SHVIEW_CUT:
            return DoCopyOrCut(lpcmi, LOWORD(lpcmi->lpVerb) == FCIDM_SHVIEW_COPY);
        case FCIDM_SHVIEW_CREATELINK:
            return DoCreateLink(lpcmi);
        case FCIDM_SHVIEW_DELETE:
            return DoDelete(lpcmi);
        case FCIDM_SHVIEW_RENAME:
            return DoRename(lpcmi);
        case FCIDM_SHVIEW_PROPERTIES:
            return DoProperties(lpcmi);
        case 0x7ABC:
            return DoFormat(lpcmi);
    }

    if (m_iIdSHEFirst && m_iIdSHELast)
    {
        if (LOWORD(lpcmi->lpVerb) >= m_iIdSHEFirst && LOWORD(lpcmi->lpVerb) <= m_iIdSHELast)
            return DoDynamicShellExtensions(lpcmi);
    }

    if (m_iIdSCMFirst && m_iIdSCMLast)
    {
        if (LOWORD(lpcmi->lpVerb) >= m_iIdSCMFirst && LOWORD(lpcmi->lpVerb) <= m_iIdSCMLast)
            return DoStaticShellExtensions(lpcmi);
    }

    FIXME("Unhandled Verb %xl\n", LOWORD(lpcmi->lpVerb));
    return E_UNEXPECTED;
}

HRESULT
WINAPI
CDefaultContextMenu::GetCommandString(
    UINT_PTR idCommand,
    UINT uFlags,
    UINT* lpReserved,
    LPSTR lpszName,
    UINT uMaxNameLen)
{
    return S_OK;
}

HRESULT
WINAPI
CDefaultContextMenu::HandleMenuMsg(
    UINT uMsg,
    WPARAM wParam,
    LPARAM lParam)
{
    return S_OK;
}

static
HRESULT
IDefaultContextMenu_Constructor(
    const DEFCONTEXTMENU *pdcm,
    REFIID riid,
    void **ppv)
{
    if (ppv == NULL)
        return E_POINTER;
    *ppv = NULL;

    CComObject<CDefaultContextMenu> *pCM;
    HRESULT hr = CComObject<CDefaultContextMenu>::CreateInstance(&pCM);
    if (FAILED(hr))
        return hr;
    pCM->AddRef(); // CreateInstance returns object with 0 ref count */

    CComPtr<IUnknown> pResult;
    hr = pCM->QueryInterface(riid, (void **)&pResult);
    if (FAILED(hr))
    {
        pCM->Release();
        return hr;
    }

    hr = pCM->Initialize(pdcm);
    if (FAILED(hr))
    {
        pCM->Release();
        return hr;
    }

    *ppv = pResult.Detach();
    pCM->Release();
    TRACE("This(%p) cidl %u\n", *ppv, pdcm->cidl);
    return S_OK;
}

/*************************************************************************
 * SHCreateDefaultContextMenu            [SHELL32.325] Vista API
 *
 */

HRESULT
WINAPI
SHCreateDefaultContextMenu(
    const DEFCONTEXTMENU *pdcm,
    REFIID riid,
    void **ppv)
{
    *ppv = NULL;
    HRESULT hr = IDefaultContextMenu_Constructor(pdcm, riid, ppv);
    if (FAILED(hr))
        ERR("IDefaultContextMenu_Constructor failed: %x\n", hr);
    TRACE("pcm %p hr %x\n", pdcm, hr);
    return hr;
}

/*************************************************************************
 * CDefFolderMenu_Create2            [SHELL32.701]
 *
 */

HRESULT
WINAPI
CDefFolderMenu_Create2(
    LPCITEMIDLIST pidlFolder,
    HWND hwnd,
    UINT cidl,
    LPCITEMIDLIST *apidl,
    IShellFolder *psf,
    LPFNDFMCALLBACK lpfn,
    UINT nKeys,
    const HKEY *ahkeyClsKeys,
    IContextMenu **ppcm)
{
    DEFCONTEXTMENU pdcm;
    pdcm.hwnd = hwnd;
    pdcm.pcmcb = NULL;
    pdcm.pidlFolder = pidlFolder;
    pdcm.psf = psf;
    pdcm.cidl = cidl;
    pdcm.apidl = apidl;
    pdcm.punkAssociationInfo = NULL;
    pdcm.cKeys = nKeys;
    pdcm.aKeys = ahkeyClsKeys;

    HRESULT hr = SHCreateDefaultContextMenu(&pdcm, IID_IContextMenu, (void**)ppcm);
    return hr;
}