dirctrlg.cpp

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/////////////////////////////////////////////////////////////////////////////
// Name:        dirctrlg.cpp
// Purpose:     wxGenericDirCtrl
// Author:      Harm van der Heijden, Robert Roebling, Julian Smart
// Modified by:
// Created:     12/12/98
// RCS-ID:      $Id: dirctrlg.cpp,v 1.129.2.5 2006/03/05 20:50:25 VZ Exp $
// Copyright:   (c) Harm van der Heijden, Robert Roebling and Julian Smart
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "dirctrlg.h"
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#if wxUSE_DIRDLG || wxUSE_FILEDLG

#include "wx/generic/dirctrlg.h"
#include "wx/module.h"
#include "wx/utils.h"
#include "wx/button.h"
#include "wx/layout.h"
#include "wx/msgdlg.h"
#include "wx/textctrl.h"
#include "wx/textdlg.h"
#include "wx/filefn.h"
#include "wx/cmndata.h"
#include "wx/gdicmn.h"
#include "wx/intl.h"
#include "wx/imaglist.h"
#include "wx/icon.h"
#include "wx/log.h"
#include "wx/sizer.h"
#include "wx/tokenzr.h"
#include "wx/dir.h"
#include "wx/settings.h"
#include "wx/artprov.h"
#include "wx/hash.h"
#include "wx/mimetype.h"
#include "wx/image.h"
#include "wx/choice.h"

#if wxUSE_STATLINE
    #include "wx/statline.h"
#endif

#if defined(__WXMAC__)
  #include  "wx/mac/private.h"  // includes mac headers
#endif

#ifdef __WXMSW__
#include <windows.h>
#include "wx/msw/winundef.h"

// FIXME - Mingw32 1.0 has both _getdrive() and _chdrive(). For now, let's assume
//         older releases don't, but it should be verified and the checks modified
//         accordingly.
#if !defined(__GNUWIN32__) || (defined(__MINGW32_MAJOR_VERSION) && __MINGW32_MAJOR_VERSION >= 1)
#if !defined(__WXWINCE__)
  #include <direct.h>
#endif
  #include <stdlib.h>
  #include <ctype.h>
#endif

#endif

#if defined(__OS2__) || defined(__DOS__)
  #ifdef __OS2__
    #define INCL_BASE
    #include <os2.h>
    #ifndef __EMX__
      #include <direct.h>
    #endif
    #include <stdlib.h>
    #include <ctype.h>
  #endif
  extern bool wxIsDriveAvailable(const wxString& dirName);
#endif // __OS2__

#if defined(__WXMAC__)
# include "MoreFilesX.h"
#endif

#ifdef __BORLANDC__
#include "dos.h"
#endif

// If compiled under Windows, this macro can cause problems
#ifdef GetFirstChild
#undef GetFirstChild
#endif

// ----------------------------------------------------------------------------
// wxGetAvailableDrives, for WINDOWS, DOS, OS2, MAC, UNIX (returns "/")
// ----------------------------------------------------------------------------

size_t wxGetAvailableDrives(wxArrayString &paths, wxArrayString &names, wxArrayInt &icon_ids)
{
#if defined(__WINDOWS__) || defined(__DOS__) || defined(__OS2__)

#ifdef __WXWINCE__
    // No logical drives; return "\"
    paths.Add(wxT("\\"));
    names.Add(wxT("\\"));
    icon_ids.Add(wxFileIconsTable::computer);
#elif defined(__WIN32__)
    wxChar driveBuffer[256];
    size_t n = (size_t) GetLogicalDriveStrings(255, driveBuffer);
    size_t i = 0;
    while (i < n)
    {
        wxString path, name;
        path.Printf(wxT("%c:\\"), driveBuffer[i]);
        name.Printf(wxT("%c:"), driveBuffer[i]);

#if !defined(__WXWINCE__)
        wxChar pname[52];
        if (GetVolumeInformation( path.c_str(), pname, 52, NULL, NULL, NULL, NULL, 0 ))
        {
            name << _T(' ') << pname;
        }
#endif // __WXWINCE__

        int imageId;
        int driveType = ::GetDriveType(path);
        switch (driveType)
        {
            case DRIVE_REMOVABLE:
                if (path == wxT("a:\\") || path == wxT("b:\\"))
                    imageId = wxFileIconsTable::floppy;
                else
                    imageId = wxFileIconsTable::removeable;
                break;
            case DRIVE_CDROM:
                imageId = wxFileIconsTable::cdrom;
                break;
            case DRIVE_REMOTE:
            case DRIVE_FIXED:
            default:
                imageId = wxFileIconsTable::drive;
                break;
        }

        paths.Add(path);
        names.Add(name);
        icon_ids.Add(imageId);

        while (driveBuffer[i] != wxT('\0'))
            i ++;
        i ++;
        if (driveBuffer[i] == wxT('\0'))
            break;
    }
#elif defined(__OS2__)
    APIRET rc;
    ULONG ulDriveNum = 0;
    ULONG ulDriveMap = 0;
    rc = ::DosQueryCurrentDisk(&ulDriveNum, &ulDriveMap);
    if ( rc == 0)
    {
        size_t i = 0;
        while (i < 26)
        {
            if (ulDriveMap & ( 1 << i ))
            {
                wxString path, name;
                path.Printf(wxT("%c:\\"), 'A' + i);
                name.Printf(wxT("%c:"), 'A' + i);

                // Note: If _filesys is unsupported by some compilers,
                //       we can always replace it by DosQueryFSAttach
                char filesysname[20];
                _filesys(name.fn_str(), filesysname, sizeof(filesysname));
                /* FAT, LAN, HPFS, CDFS, NFS */
                int imageId;
                if (path == wxT("A:\\") || path == wxT("B:\\"))
                    imageId = wxFileIconsTable::floppy;
                else if (!strcmp(filesysname, "CDFS"))
                    imageId = wxFileIconsTable::cdrom;
                else if (!strcmp(filesysname, "LAN") ||
                         !strcmp(filesysname, "NFS"))
                    imageId = wxFileIconsTable::drive;
                else
                    imageId = wxFileIconsTable::drive;
                paths.Add(path);
                names.Add(name);
                icon_ids.Add(imageId);
            }
            i ++;
        }
    }
#else // !__WIN32__, !__OS2__
    int drive;

    /* If we can switch to the drive, it exists. */
    for( drive = 1; drive <= 26; drive++ )
    {
        wxString path, name;
        path.Printf(wxT("%c:\\"), (char) (drive + 'a' - 1));
        name.Printf(wxT("%c:"), (char) (drive + 'A' - 1));

        if (wxIsDriveAvailable(path))
        {
            paths.Add(path);
            names.Add(name);
            icon_ids.Add((drive <= 2) ? wxFileIconsTable::floppy : wxFileIconsTable::drive);
        }
    }
#endif // __WIN32__/!__WIN32__

#elif defined(__WXMAC__)

    ItemCount volumeIndex = 1;
    OSErr err = noErr ;

    while( noErr == err )
    {
        HFSUniStr255 volumeName ;
        FSRef fsRef ;
        FSVolumeInfo volumeInfo ;
        err = FSGetVolumeInfo(0, volumeIndex, NULL, kFSVolInfoFlags , &volumeInfo , &volumeName, &fsRef);
        if( noErr == err )
        {
            wxString path = wxMacFSRefToPath( &fsRef ) ;
            wxString name = wxMacHFSUniStrToString( &volumeName ) ;

            if ( (volumeInfo.flags & kFSVolFlagSoftwareLockedMask) || (volumeInfo.flags & kFSVolFlagHardwareLockedMask) )
            {
                icon_ids.Add(wxFileIconsTable::cdrom);
            }
            else
            {
                icon_ids.Add(wxFileIconsTable::drive);
            }
            // todo other removable

            paths.Add(path);
            names.Add(name);
            volumeIndex++ ;
        }
    }

#elif defined(__UNIX__)
    paths.Add(wxT("/"));
    names.Add(wxT("/"));
    icon_ids.Add(wxFileIconsTable::computer);
#else
    #error "Unsupported platform in wxGenericDirCtrl!"
#endif
    wxASSERT_MSG( (paths.GetCount() == names.GetCount()), wxT("The number of paths and their human readable names should be equal in number."));
    wxASSERT_MSG( (paths.GetCount() == icon_ids.GetCount()), wxT("Wrong number of icons for available drives."));
    return paths.GetCount();
}

// ----------------------------------------------------------------------------
// wxIsDriveAvailable
// ----------------------------------------------------------------------------

#if defined(__DOS__)

bool wxIsDriveAvailable(const wxString& dirName)
{
    // FIXME_MGL - this method leads to hang up under Watcom for some reason
#ifndef __WATCOMC__
    if ( dirName.Len() == 3 && dirName[1u] == wxT(':') )
    {
        wxString dirNameLower(dirName.Lower());
        // VS: always return true for removable media, since Win95 doesn't
        //     like it when MS-DOS app accesses empty floppy drive
        return (dirNameLower[0u] == wxT('a') ||
                dirNameLower[0u] == wxT('b') ||
                wxDirExists(dirNameLower));
    }
    else
#endif
        return true;
}

#elif defined(__WINDOWS__) || defined(__OS2__)

int setdrive(int WXUNUSED_IN_WINCE(drive))
{
#ifdef __WXWINCE__
    return 0;
#elif defined(__GNUWIN32__) && \
    (defined(__MINGW32_MAJOR_VERSION) && __MINGW32_MAJOR_VERSION >= 1)
    return _chdrive(drive);
#else
    wxChar  newdrive[4];

    if (drive < 1 || drive > 31)
        return -1;
    newdrive[0] = (wxChar)(wxT('A') + drive - 1);
    newdrive[1] = wxT(':');
#ifdef __OS2__
    newdrive[2] = wxT('\\');
    newdrive[3] = wxT('\0');
#else
    newdrive[2] = wxT('\0');
#endif
#if defined(__WXMSW__)
    if (::SetCurrentDirectory(newdrive))
#else
    // VA doesn't know what LPSTR is and has its own set
    if (!DosSetCurrentDir((PSZ)newdrive))
#endif
        return 0;
    else
        return -1;
#endif // !GNUWIN32
}

bool wxIsDriveAvailable(const wxString& WXUNUSED_IN_WINCE(dirName))
{
#ifdef __WXWINCE__
    return false;
#else
#ifdef __WIN32__
    UINT errorMode = SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOOPENFILEERRORBOX);
#endif
    bool success = true;

    // Check if this is a root directory and if so,
    // whether the drive is available.
    if (dirName.Len() == 3 && dirName[(size_t)1] == wxT(':'))
    {
        wxString dirNameLower(dirName.Lower());
#if defined(__GNUWIN32__) && !(defined(__MINGW32_MAJOR_VERSION) && __MINGW32_MAJOR_VERSION >= 1)
        success = wxDirExists(dirNameLower);
#else
        #if defined(__OS2__)
        // Avoid changing to drive since no media may be inserted.
        if (dirNameLower[(size_t)0] == 'a' || dirNameLower[(size_t)0] == 'b')
            return success;
        #endif
        int currentDrive = _getdrive();
        int thisDrive = (int) (dirNameLower[(size_t)0] - 'a' + 1) ;
        int err = setdrive( thisDrive ) ;
        setdrive( currentDrive );

        if (err == -1)
        {
            success = false;
        }
#endif
    }
#ifdef __WIN32__
    (void) SetErrorMode(errorMode);
#endif

    return success;
#endif
}
#endif // __WINDOWS__ || __OS2__

#endif // wxUSE_DIRDLG || wxUSE_FILEDLG



#if wxUSE_DIRDLG

// Function which is called by quick sort. We want to override the default wxArrayString behaviour,
// and sort regardless of case.
static int wxCMPFUNC_CONV wxDirCtrlStringCompareFunction(const wxString& strFirst, const wxString& strSecond)
{
    return strFirst.CmpNoCase(strSecond);
}

//-----------------------------------------------------------------------------
// wxDirItemData
//-----------------------------------------------------------------------------

wxDirItemData::wxDirItemData(const wxString& path, const wxString& name,
                             bool isDir)
{
    m_path = path;
    m_name = name;
    /* Insert logic to detect hidden files here
     * In UnixLand we just check whether the first char is a dot
     * For FileNameFromPath read LastDirNameInThisPath ;-) */
    // m_isHidden = (bool)(wxFileNameFromPath(*m_path)[0] == '.');
    m_isHidden = false;
    m_isExpanded = false;
    m_isDir = isDir;
}

void wxDirItemData::SetNewDirName(const wxString& path)
{
    m_path = path;
    m_name = wxFileNameFromPath(path);
}

bool wxDirItemData::HasSubDirs() const
{
    if (m_path.empty())
        return false;

    wxDir dir;
    {
        wxLogNull nolog;
        if ( !dir.Open(m_path) )
            return false;
    }

    return dir.HasSubDirs();
}

bool wxDirItemData::HasFiles(const wxString& WXUNUSED(spec)) const
{
    if (m_path.empty())