brsfolder.c

来自「一个类似windows」· C语言 代码 · 共 692 行 · 第 1/2 页

                        }
                    }
                    IShellFolder_Release(pSFChild);
                }
	    }

	    if (!(hPrev = InsertTreeViewItem(info, lpsf, pidlTemp, pidl, pEnumIL, hParent)))
	        goto done;
	    SHFree(pidlTemp);  /* Finally, free the pidl that the shell gave us... */
	    pidlTemp=NULL;
	}

done:
	ReleaseCapture();
	SetCursor(LoadCursorW(0, (LPWSTR)IDC_ARROW));

	if (pidlTemp)
	  SHFree(pidlTemp);
}

static inline BOOL PIDLIsType(LPCITEMIDLIST pidl, PIDLTYPE type)
{
    LPPIDLDATA data = _ILGetDataPointer(pidl);
    if (!data)
        return FALSE;
    return (data->type == type);
}

static void BrsFolder_CheckValidSelection( browse_info *info, LPTV_ITEMDATA lptvid )
{
    LPBROWSEINFOW lpBrowseInfo = info->lpBrowseInfo;
    LPCITEMIDLIST pidl = lptvid->lpi;
    BOOL bEnabled = TRUE;
    DWORD dwAttributes;
    HRESULT r;

    if ((lpBrowseInfo->ulFlags & BIF_BROWSEFORCOMPUTER) &&
        !PIDLIsType(pidl, PT_COMP))
        bEnabled = FALSE;
    if (lpBrowseInfo->ulFlags & BIF_RETURNFSANCESTORS)
    {
        dwAttributes = SFGAO_FILESYSANCESTOR | SFGAO_FILESYSTEM;
        r = IShellFolder_GetAttributesOf(lptvid->lpsfParent, 1,
                                (LPCITEMIDLIST*)&lptvid->lpi, &dwAttributes);
        if (FAILED(r) || !(dwAttributes & (SFGAO_FILESYSANCESTOR|SFGAO_FILESYSTEM)))
            bEnabled = FALSE;
    }
    if (lpBrowseInfo->ulFlags & BIF_RETURNONLYFSDIRS)
    {
        dwAttributes = SFGAO_FOLDER | SFGAO_FILESYSTEM;
        r = IShellFolder_GetAttributesOf(lptvid->lpsfParent, 1,
                                (LPCITEMIDLIST*)&lptvid->lpi, &dwAttributes);
        if (FAILED(r) || 
            ((dwAttributes & (SFGAO_FOLDER|SFGAO_FILESYSTEM)) != (SFGAO_FOLDER|SFGAO_FILESYSTEM)))
        {
            bEnabled = FALSE;
        }
    }
    SendMessageW(info->hWnd, BFFM_ENABLEOK, 0, (LPARAM)bEnabled);
}

static LRESULT BrsFolder_Treeview_Delete( browse_info *info, NMTREEVIEWW *pnmtv )
{
    LPTV_ITEMDATA lptvid = (LPTV_ITEMDATA)pnmtv->itemOld.lParam;

    TRACE("TVN_DELETEITEMA/W %p\n", lptvid);

    IShellFolder_Release(lptvid->lpsfParent);
    if (lptvid->pEnumIL)
        IEnumIDList_Release(lptvid->pEnumIL);
    SHFree(lptvid->lpi);
    SHFree(lptvid->lpifq);
    SHFree(lptvid);
    return 0;
}

static LRESULT BrsFolder_Treeview_Expand( browse_info *info, NMTREEVIEWW *pnmtv )
{
    IShellFolder *lpsf2 = NULL;
    LPTV_ITEMDATA lptvid = (LPTV_ITEMDATA) pnmtv->itemNew.lParam;
    HRESULT r;

    TRACE("TVN_ITEMEXPANDINGA/W\n");

    if ((pnmtv->itemNew.state & TVIS_EXPANDEDONCE))
        return 0;

    if (lptvid->lpi && lptvid->lpi->mkid.cb) {
        r = IShellFolder_BindToObject( lptvid->lpsfParent, lptvid->lpi, 0,
                                      (REFIID)&IID_IShellFolder, (LPVOID *)&lpsf2 );
    } else {
        lpsf2 = lptvid->lpsfParent;
        r = IShellFolder_AddRef(lpsf2);
    }

    if (SUCCEEDED(r))
        FillTreeView( info, lpsf2, lptvid->lpifq, pnmtv->itemNew.hItem, lptvid->pEnumIL);

    /* My Computer is already sorted and trying to do a simple text
     * sort will only mess things up */
    if (!_ILIsMyComputer(lptvid->lpi))
        TreeView_SortChildren(info->hwndTreeView, pnmtv->itemNew.hItem, FALSE);

    return 0;
}

static HRESULT BrsFolder_Treeview_Changed( browse_info *info, NMTREEVIEWW *pnmtv )
{
    LPTV_ITEMDATA lptvid = (LPTV_ITEMDATA) pnmtv->itemNew.lParam;

    lptvid = (LPTV_ITEMDATA) pnmtv->itemNew.lParam;
    info->pidlRet = lptvid->lpifq;
    browsefolder_callback( info->lpBrowseInfo, info->hWnd, BFFM_SELCHANGED,
                           (LPARAM)info->pidlRet );
    BrsFolder_CheckValidSelection( info, lptvid );
    return 0;
}

static LRESULT BrsFolder_OnNotify( browse_info *info, UINT CtlID, LPNMHDR lpnmh )
{
    NMTREEVIEWW *pnmtv = (NMTREEVIEWW *)lpnmh;

    TRACE("%p %x %p msg=%x\n", info, CtlID, lpnmh, pnmtv->hdr.code);

    if (pnmtv->hdr.idFrom != IDD_TREEVIEW)
        return 0;

    switch (pnmtv->hdr.code)
    {
    case TVN_DELETEITEMA:
    case TVN_DELETEITEMW:
        return BrsFolder_Treeview_Delete( info, pnmtv );

    case TVN_ITEMEXPANDINGA:
    case TVN_ITEMEXPANDINGW:
        return BrsFolder_Treeview_Expand( info, pnmtv );

    case TVN_SELCHANGEDA:
    case TVN_SELCHANGEDW:
        return BrsFolder_Treeview_Changed( info, pnmtv );

    default:
        WARN("unhandled (%d)\n", pnmtv->hdr.code);
        break;
    }

    return 0;
}


static BOOL BrsFolder_OnCreate( HWND hWnd, browse_info *info )
{
    LPBROWSEINFOW lpBrowseInfo = info->lpBrowseInfo;

    info->hWnd = hWnd;
    SetPropW( hWnd, szBrowseFolderInfo, info );

    if (lpBrowseInfo->ulFlags & ~SUPPORTEDFLAGS)
	FIXME("flags %x not implemented\n", lpBrowseInfo->ulFlags & ~SUPPORTEDFLAGS);

    if (lpBrowseInfo->lpszTitle)
	SetWindowTextW( GetDlgItem(hWnd, IDD_TITLE), lpBrowseInfo->lpszTitle );
    else
	ShowWindow( GetDlgItem(hWnd, IDD_TITLE), SW_HIDE );

    if (!(lpBrowseInfo->ulFlags & BIF_STATUSTEXT))
	ShowWindow( GetDlgItem(hWnd, IDD_STATUS), SW_HIDE );

    info->hwndTreeView = GetDlgItem( hWnd, IDD_TREEVIEW );
    if (info->hwndTreeView)
        InitializeTreeView( info );
    else
        ERR("treeview control missing!\n");

    browsefolder_callback( info->lpBrowseInfo, hWnd, BFFM_INITIALIZED, 0 );

    return TRUE;
}

static BOOL BrsFolder_OnCommand( browse_info *info, UINT id )
{
    LPBROWSEINFOW lpBrowseInfo = info->lpBrowseInfo;

    switch (id)
    {
    case IDOK:
        info->pidlRet = ILClone(info->pidlRet); /* The original pidl will be free'd. */
        pdump( info->pidlRet );
        if (lpBrowseInfo->pszDisplayName)
            SHGetPathFromIDListW( info->pidlRet, lpBrowseInfo->pszDisplayName );
        EndDialog( info->hWnd, 1 );
        return TRUE;

    case IDCANCEL:
        EndDialog( info->hWnd, 0 );
        return TRUE;
    }
    return FALSE;
}

/*************************************************************************
 *             BrsFolderDlgProc32  (not an exported API function)
 */
static INT_PTR CALLBACK BrsFolderDlgProc( HWND hWnd, UINT msg, WPARAM wParam,
				          LPARAM lParam )
{
    browse_info *info;

    TRACE("hwnd=%p msg=%04x 0x%08x 0x%08lx\n", hWnd,  msg, wParam, lParam );

    if (msg == WM_INITDIALOG)
        return BrsFolder_OnCreate( hWnd, (browse_info*) lParam );

    info = (browse_info*) GetPropW( hWnd, szBrowseFolderInfo );

    switch (msg)
    {
    case WM_NOTIFY:
        return BrsFolder_OnNotify( info, (UINT)wParam, (LPNMHDR)lParam);

    case WM_COMMAND:
        return BrsFolder_OnCommand( info, wParam );

    case BFFM_SETSTATUSTEXTA:
        TRACE("Set status %s\n", debugstr_a((LPSTR)lParam));
        SetWindowTextA(GetDlgItem(hWnd, IDD_STATUS), (LPSTR)lParam);
        break;

    case BFFM_SETSTATUSTEXTW:
        TRACE("Set status %s\n", debugstr_w((LPWSTR)lParam));
        SetWindowTextW(GetDlgItem(hWnd, IDD_STATUS), (LPWSTR)lParam);
        break;

    case BFFM_ENABLEOK:
        TRACE("Enable %ld\n", lParam);
        EnableWindow(GetDlgItem(hWnd, 1), (lParam)?TRUE:FALSE);
        break;

    case BFFM_SETOKTEXT: /* unicode only */
        TRACE("Set OK text %s\n", debugstr_w((LPWSTR)wParam));
        SetWindowTextW(GetDlgItem(hWnd, 1), (LPWSTR)wParam);
        break;

    case BFFM_SETSELECTIONA:
        if (wParam)
            FIXME("Set selection %s\n", debugstr_a((LPSTR)lParam));
        else
            FIXME("Set selection %p\n", (void*)lParam);
        break;

    case BFFM_SETSELECTIONW:
        if (wParam)
            FIXME("Set selection %s\n", debugstr_w((LPWSTR)lParam));
        else
            FIXME("Set selection %p\n", (void*)lParam);
        break;

    case BFFM_SETEXPANDED: /* unicode only */
        if (wParam)
            FIXME("Set expanded %s\n", debugstr_w((LPWSTR)lParam));
        else
            FIXME("Set expanded %p\n", (void*)lParam);
        break;
    }
    return FALSE;
}

static const WCHAR swBrowseTemplateName[] = {
    'S','H','B','R','S','F','O','R','F','O','L','D','E','R','_','M','S','G','B','O','X',0};

/*************************************************************************
 * SHBrowseForFolderA [SHELL32.@]
 * SHBrowseForFolder  [SHELL32.@]
 */
LPITEMIDLIST WINAPI SHBrowseForFolderA (LPBROWSEINFOA lpbi)
{
    BROWSEINFOW bi;
    LPITEMIDLIST lpid;
    INT len;
    
    TRACE("%p\n", lpbi);

    bi.hwndOwner = lpbi->hwndOwner;
    bi.pidlRoot = lpbi->pidlRoot;
    if (lpbi->pszDisplayName)
    {
        bi.pszDisplayName = HeapAlloc( GetProcessHeap(), 0, MAX_PATH * sizeof(WCHAR) );
        MultiByteToWideChar( CP_ACP, 0, lpbi->pszDisplayName, -1, bi.pszDisplayName, MAX_PATH );
    }
    else
        bi.pszDisplayName = NULL;

    if (lpbi->lpszTitle)
    {
        len = MultiByteToWideChar( CP_ACP, 0, lpbi->lpszTitle, -1, NULL, 0 );
        bi.lpszTitle = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
        MultiByteToWideChar( CP_ACP, 0, lpbi->lpszTitle, -1, (LPWSTR)bi.lpszTitle, len );
    }
    else
        bi.lpszTitle = NULL;

    bi.ulFlags = lpbi->ulFlags;
    bi.lpfn = lpbi->lpfn;
    bi.lParam = lpbi->lParam;
    bi.iImage = lpbi->iImage;
    lpid = SHBrowseForFolderW( &bi );
    if (bi.pszDisplayName)
    {
        WideCharToMultiByte( CP_ACP, 0, bi.pszDisplayName, -1,
                             lpbi->pszDisplayName, MAX_PATH, 0, NULL);
        HeapFree( GetProcessHeap(), 0, bi.pszDisplayName );
    }
    HeapFree(GetProcessHeap(), 0, (LPVOID)bi.lpszTitle);
    lpbi->iImage = bi.iImage;
    return lpid;
}


/*************************************************************************
 * SHBrowseForFolderW [SHELL32.@]
 *
 * NOTES
 *  crashes when passed a null pointer
 */
LPITEMIDLIST WINAPI SHBrowseForFolderW (LPBROWSEINFOW lpbi)
{
    browse_info info;
    DWORD r;
    HRESULT hr;

    info.hWnd = 0;
    info.pidlRet = NULL;
    info.lpBrowseInfo = lpbi;
    info.hwndTreeView = NULL;

    hr = OleInitialize(NULL);
    r = DialogBoxParamW( shell32_hInstance, swBrowseTemplateName, lpbi->hwndOwner,
	                 BrsFolderDlgProc, (LPARAM)&info );
    if (SUCCEEDED(hr)) 
        OleUninitialize();
    if (!r)
        return NULL;

    return info.pidlRet;
}