/////////////////////////////////////////////////////////////////////////////
// Name:        filedlgg.cpp
// Purpose:     wxFileDialog
// Author:      Robert Roebling
// Modified by:
// Created:     12/12/98
// RCS-ID:      $Id$
// Copyright:   (c) Robert Roebling
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "filedlgg.h"
#endif

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

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#ifndef __UNIX__
#error wxFileDialog currently only supports unix
#endif

#include "wx/filedlg.h"
#include "wx/debug.h"
#include "wx/log.h"
#include "wx/intl.h"
#include "wx/msgdlg.h"
#include "wx/sizer.h"
#include "wx/bmpbuttn.h"
#include "wx/tokenzr.h"
#include "wx/mimetype.h"
#include "wx/image.h"
#include "wx/module.h"
#include "wx/config.h"
#include "wx/imaglist.h"

#if wxUSE_TOOLTIPS
    #include "wx/tooltip.h"
#endif

#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <pwd.h>
#ifndef __VMS
# include <grp.h>
#endif
# include <time.h>
#include <unistd.h>

#include "wx/generic/home.xpm"
#include "wx/generic/listview.xpm"
#include "wx/generic/repview.xpm"
#include "wx/generic/new_dir.xpm"
#include "wx/generic/dir_up.xpm"
#include "wx/generic/folder.xpm"
#include "wx/generic/deffile.xpm"
#include "wx/generic/exefile.xpm"

// ----------------------------------------------------------------------------
// private classes - icons list management
// ----------------------------------------------------------------------------

class wxFileIconEntry : public wxObject
{
public:
    wxFileIconEntry(int i) { id = i; }

    int id;
};


class wxFileIconsTable
{
public:
    wxFileIconsTable();

    int GetIconID(const wxString& extension, const wxString& mime = wxEmptyString);
    wxImageList *GetImageList() { return &m_ImageList; }

protected:
    wxImageList m_ImageList;
    wxHashTable m_HashTable;
};

static wxFileIconsTable *g_IconsTable = NULL;

#define FI_FOLDER     0
#define FI_UNKNOWN    1
#define FI_EXECUTABLE 2

wxFileIconsTable::wxFileIconsTable() :
                    m_ImageList(16, 16),
                    m_HashTable(wxKEY_STRING)
{
    m_HashTable.DeleteContents(TRUE);
    m_ImageList.Add(wxBitmap(folder_xpm));  // FI_FOLDER
    m_ImageList.Add(wxBitmap(deffile_xpm)); // FI_UNKNOWN
    if (GetIconID(wxEmptyString, _T("application/x-executable")) == FI_UNKNOWN)
    {                                       // FI_EXECUTABLE
        m_ImageList.Add(wxBitmap(exefile_xpm));
        m_HashTable.Delete(_T("exe"));
        m_HashTable.Put(_T("exe"), new wxFileIconEntry(FI_EXECUTABLE));
    }
    /* else put into list by GetIconID
       (KDE defines application/x-executable for *.exe and has nice icon)
     */
}



static wxBitmap CreateAntialiasedBitmap(const wxImage& img)
{
    wxImage small(16, 16);
    unsigned char *p1, *p2, *ps;
    unsigned char mr = img.GetMaskRed(),
                  mg = img.GetMaskGreen(),
                  mb = img.GetMaskBlue();

    unsigned x, y;
    unsigned sr, sg, sb, smask;

    p1 = img.GetData(), p2 = img.GetData() + 3 * 32, ps = small.GetData();
    small.SetMaskColour(mr, mr, mr);

    for (y = 0; y < 16; y++)
    {
        for (x = 0; x < 16; x++)
        {
            sr = sg = sb = smask = 0;
            if (p1[0] != mr || p1[1] != mg || p1[2] != mb)
                sr += p1[0], sg += p1[1], sb += p1[2];
            else smask++;
            p1 += 3;
            if (p1[0] != mr || p1[1] != mg || p1[2] != mb)
                sr += p1[0], sg += p1[1], sb += p1[2];
            else smask++;
            p1 += 3;
            if (p2[0] != mr || p2[1] != mg || p2[2] != mb)
                sr += p2[0], sg += p2[1], sb += p2[2];
            else smask++;
            p2 += 3;
            if (p2[0] != mr || p2[1] != mg || p2[2] != mb)
                sr += p2[0], sg += p2[1], sb += p2[2];
            else smask++;
            p2 += 3;

            if (smask > 2)
                ps[0] = ps[1] = ps[2] = mr;
            else
                ps[0] = sr >> 2, ps[1] = sg >> 2, ps[2] = sb >> 2;
            ps += 3;
        }
        p1 += 32 * 3, p2 += 32 * 3;
    }

    return small.ConvertToBitmap();
}


// finds empty borders and return non-empty area of image:
static wxImage CutEmptyBorders(const wxImage& img)
{
    unsigned char mr = img.GetMaskRed(),
                  mg = img.GetMaskGreen(),
                  mb = img.GetMaskBlue();
    unsigned char *dt = img.GetData(), *dttmp;
    unsigned w = img.GetWidth(), h = img.GetHeight();

    unsigned top, bottom, left, right, i;
    bool empt;

#define MK_DTTMP(x,y)      dttmp = dt + ((x + y * w) * 3)
#define NOEMPTY_PIX(empt)  if (dttmp[0] != mr || dttmp[1] != mg || dttmp[2] != mb) {empt = FALSE; break;}

    for (empt = TRUE, top = 0; empt && top < h; top++)
    {
        MK_DTTMP(0, top);
        for (i = 0; i < w; i++, dttmp+=3)
            NOEMPTY_PIX(empt)
    }
    for (empt = TRUE, bottom = h-1; empt && bottom > top; bottom--)
    {
        MK_DTTMP(0, bottom);
        for (i = 0; i < w; i++, dttmp+=3)
            NOEMPTY_PIX(empt)
    }
    for (empt = TRUE, left = 0; empt && left < w; left++)
    {
        MK_DTTMP(left, 0);
        for (i = 0; i < h; i++, dttmp+=3*w)
            NOEMPTY_PIX(empt)
    }
    for (empt = TRUE, right = w-1; empt && right > left; right--)
    {
        MK_DTTMP(right, 0);
        for (i = 0; i < h; i++, dttmp+=3*w)
            NOEMPTY_PIX(empt)
    }
    top--, left--, bottom++, right++;

    return img.GetSubImage(wxRect(left, top, right - left + 1, bottom - top + 1));
}



int wxFileIconsTable::GetIconID(const wxString& extension, const wxString& mime)
{
    if (!extension.IsEmpty())
    {
        wxFileIconEntry *entry = (wxFileIconEntry*) m_HashTable.Get(extension);
        if (entry) return (entry -> id);
    }

    wxFileType *ft = (mime.IsEmpty()) ?
                   wxTheMimeTypesManager -> GetFileTypeFromExtension(extension) :
                   wxTheMimeTypesManager -> GetFileTypeFromMimeType(mime);
    wxIcon ic;
    if (ft == NULL || (!ft -> GetIcon(&ic)) || (!ic.Ok()))
    {
        int newid = FI_UNKNOWN;
        m_HashTable.Put(extension, new wxFileIconEntry(newid));
        return newid;
    }
    wxImage img(ic);
    delete ft;

    int id = m_ImageList.GetImageCount();
    if (img.GetWidth() == 16 && img.GetHeight() == 16)
        m_ImageList.Add(img.ConvertToBitmap());
    else
    {
        if (img.GetWidth() != 32 || img.GetHeight() != 32)
            m_ImageList.Add(CreateAntialiasedBitmap(CutEmptyBorders(img).Rescale(32, 32)));
        else
            m_ImageList.Add(CreateAntialiasedBitmap(img));
    }
    m_HashTable.Put(extension, new wxFileIconEntry(id));
    return id;
}



// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------

static
int ListCompare( long data1, long data2, long WXUNUSED(data) )
{
     wxFileData *fd1 = (wxFileData*)data1 ;
     wxFileData *fd2 = (wxFileData*)data2 ;
     if (fd1->GetName() == wxT("..")) return -1;
     if (fd2->GetName() == wxT("..")) return 1;
     if (fd1->IsDir() && !fd2->IsDir()) return -1;
     if (fd2->IsDir() && !fd1->IsDir()) return 1;
     return wxStrcmp( fd1->GetName(), fd2->GetName() );
}

//-----------------------------------------------------------------------------
//  wxFileData
//-----------------------------------------------------------------------------

IMPLEMENT_DYNAMIC_CLASS(wxFileData,wxObject);

wxFileData::wxFileData( const wxString &name, const wxString &fname )
{
    m_name = name;
    m_fileName = fname;

    struct stat buff;
    stat( m_fileName.fn_str(), &buff );

#if !defined( __EMX__ ) && !defined(__VMS)
    struct stat lbuff;
    lstat( m_fileName.fn_str(), &lbuff );
    m_isLink = S_ISLNK( lbuff.st_mode );
    struct tm *t = localtime( &lbuff.st_mtime );
#else
    m_isLink = FALSE;
    struct tm *t = localtime( &buff.st_mtime );
#endif

//  struct passwd *user = getpwuid( buff.st_uid );
//  struct group *grp = getgrgid( buff.st_gid );

    m_isDir = S_ISDIR( buff.st_mode );
    m_isExe = ((buff.st_mode & S_IXUSR ) == S_IXUSR );

    m_size = buff.st_size;

    m_hour = t->tm_hour;
    m_minute = t->tm_min;
    m_month = t->tm_mon+1;
    m_day = t->tm_mday;
    m_year = t->tm_year;
    m_year += 1900;

    m_permissions.sprintf( wxT("%c%c%c"),
     ((( buff.st_mode & S_IRUSR ) == S_IRUSR ) ? wxT('r') : wxT('-')),
     ((( buff.st_mode & S_IWUSR ) == S_IWUSR ) ? wxT('w') : wxT('-')),
     ((( buff.st_mode & S_IXUSR ) == S_IXUSR ) ? wxT('x') : wxT('-')) );
}

wxString wxFileData::GetName() const
{
    return m_name;
}

wxString wxFileData::GetFullName() const
{
    return m_fileName;
}

wxString wxFileData::GetHint() const
{
    wxString s = m_fileName;
    s += "  ";
    if (m_isDir) s += _("<DIR> ");
    else if (m_isLink) s += _("<LINK> ");
    else
    {
        s += LongToString( m_size );
        s += _(" bytes ");
    }
    s += IntToString( m_day );
    s += wxT(".");
    s += IntToString( m_month );
    s += wxT(".");
    s += IntToString( m_year );
    s += wxT("  ");
    s += IntToString( m_hour );
    s += wxT(":");
    s += IntToString( m_minute );
    s += wxT("  ");
    s += m_permissions;
    return s;
};

wxString wxFileData::GetEntry( int num )
{
    wxString s;
    switch (num)
    {
        case 0:
        {
            s = m_name;
        }
        break;
        case 1:
        {
            if (m_isDir) s = _("<DIR>");
            else if (m_isLink) s = _("<LINK>");
            else s = LongToString( m_size );
        }
        break;
        case 2:
        {
            if (m_day < 10) s = wxT("0"); else s = wxT("");
            s += IntToString( m_day );
            s += wxT(".");
            if (m_month < 10) s += wxT("0");
            s += IntToString( m_month );
            s += wxT(".");
            s += IntToString( m_year );
        }
        break;
        case 3:
        {
            if (m_hour < 10) s = wxT("0"); else s = wxT("");
            s += IntToString( m_hour );
            s += wxT(":");
            if (m_minute < 10) s += wxT("0");
            s += IntToString( m_minute );
            break;
        }
        case 4:
            s = m_permissions;
            break;
        default:
            s = wxT("No entry");
            break;
    }
    return s;
}

bool wxFileData::IsDir()
{
    return m_isDir;
}

bool wxFileData::IsExe()
{
    return m_isExe;
}

bool wxFileData::IsLink()
{
    return m_isLink;
}

long wxFileData::GetSize()
{
    return m_size;
}

void wxFileData::SetNewName( const wxString &name, const wxString &fname )
{
    m_name = name;
    m_fileName = fname;
}

void wxFileData::MakeItem( wxListItem &item )
{
    item.m_text = m_name;
    item.ClearAttributes();
    if (IsExe()) item.SetTextColour(*wxRED);
    if (IsDir()) item.SetTextColour(*wxBLUE);

    if (IsDir())
        item.m_image = FI_FOLDER;
    else if (IsExe())
        item.m_image = FI_EXECUTABLE;
    else if (m_name.Find(wxT('.')) != wxNOT_FOUND)
        item.m_image = g_IconsTable -> GetIconID(m_name.AfterLast(wxT('.')));
    else
        item.m_image = FI_UNKNOWN;

    if (IsLink())
    {
        wxColour *dg = wxTheColourDatabase->FindColour( "MEDIUM GREY" );
        item.SetTextColour(*dg);
    }
    item.m_data = (long)this;
}

//-----------------------------------------------------------------------------
//  wxFileCtrl
//-----------------------------------------------------------------------------

IMPLEMENT_DYNAMIC_CLASS(wxFileCtrl,wxListCtrl);

BEGIN_EVENT_TABLE(wxFileCtrl,wxListCtrl)
    EVT_LIST_DELETE_ITEM(-1, wxFileCtrl::OnListDeleteItem)
    EVT_LIST_DELETE_ALL_ITEMS(-1, wxFileCtrl::OnListDeleteAllItems)
    EVT_LIST_END_LABEL_EDIT(-1, wxFileCtrl::OnListEndLabelEdit)
END_EVENT_TABLE()


wxFileCtrl::wxFileCtrl()
{
    m_dirName = wxT("/");
    m_showHidden = FALSE;
}

wxFileCtrl::wxFileCtrl( wxWindow *win, wxWindowID id,
    const wxString &dirName, const wxString &wild,
    const wxPoint &pos, const wxSize &size,
    long style, const wxValidator &validator, const wxString &name ) :
  wxListCtrl( win, id, pos, size, style, validator, name )
{
    if (! g_IconsTable) g_IconsTable = new wxFileIconsTable;
    wxImageList *imageList = g_IconsTable -> GetImageList();

    SetImageList( imageList, wxIMAGE_LIST_SMALL );

    m_dirName = dirName;
    m_wild = wild;
    m_showHidden = FALSE;
    Update();
}

void wxFileCtrl::ChangeToListMode()
{
    SetSingleStyle( wxLC_LIST );
    Update();
}

void wxFileCtrl::ChangeToReportMode()
{
    SetSingleStyle( wxLC_REPORT );
    Update();
}

void wxFileCtrl::ChangeToIconMode()
{
    SetSingleStyle( wxLC_ICON );
    Update();
}

void wxFileCtrl::ShowHidden( bool show )
{
    m_showHidden = show;
    Update();
}

long wxFileCtrl::Add( wxFileData *fd, wxListItem &item )
{
    long ret = -1;
    item.m_mask = wxLIST_MASK_TEXT + wxLIST_MASK_DATA + wxLIST_MASK_IMAGE;
    fd->MakeItem( item );
    long my_style = GetWindowStyleFlag();
    if (my_style & wxLC_REPORT)
    {
        ret = InsertItem( item );
        for (int i = 1; i < 5; i++) SetItem( item.m_itemId, i, fd->GetEntry( i) );
    }
    else if (my_style & wxLC_LIST)
    {
        ret = InsertItem( item );
    }
    return ret;
}

void wxFileCtrl::Update()
{
    long my_style = GetWindowStyleFlag();
    int name_col_width = 0;
    if (my_style & wxLC_REPORT)
    {
        if (GetColumnCount() > 0)
            name_col_width = GetColumnWidth( 0 );
    }

    ClearAll();
    if (my_style & wxLC_REPORT)
    {
        if (name_col_width < 140) name_col_width = 140;
        InsertColumn( 0, _("Name"), wxLIST_FORMAT_LEFT, name_col_width );
        InsertColumn( 1, _("Size"), wxLIST_FORMAT_LEFT, 60 );
        InsertColumn( 2, _("Date"), wxLIST_FORMAT_LEFT, 65 );
        InsertColumn( 3, _("Time"), wxLIST_FORMAT_LEFT, 50 );
        InsertColumn( 4, _("Permissions"), wxLIST_FORMAT_LEFT, 120 );
    }
    wxFileData *fd = (wxFileData *) NULL;
    wxListItem item;
    item.m_itemId = 0;
    item.m_col = 0;

    if (m_dirName != wxT("/"))
    {
        wxString p( wxPathOnly(m_dirName) );
        if (p.IsEmpty()) p = wxT("/");
        fd = new wxFileData( wxT(".."), p );
        Add( fd, item );
        item.m_itemId++;
    }

    wxString res = m_dirName + wxT("/*");
    wxString f( wxFindFirstFile( res.GetData(), wxDIR ) );
    while (!f.IsEmpty())
    {
        res = wxFileNameFromPath( f );
        fd = new wxFileData( res, f );
        wxString s = fd->GetName();
        if (m_showHidden || (s[0u] != wxT('.')))
        {
            Add( fd, item );
            item.m_itemId++;
        }
        f = wxFindNextFile();
    }

    res = m_dirName + wxT("/") + m_wild;
    f = wxFindFirstFile( res.GetData(), wxFILE );
    while (!f.IsEmpty())
    {
        res = wxFileNameFromPath( f );
        fd = new wxFileData( res, f );
        wxString s = fd->GetName();
        if (m_showHidden || (s[0u] != wxT('.')))
        {
            Add( fd, item );
            item.m_itemId++;
        }
        f = wxFindNextFile();
    }

    SortItems( ListCompare, 0 );

    if (my_style & wxLC_REPORT)
    {
       SetColumnWidth( 1, wxLIST_AUTOSIZE );
       SetColumnWidth( 2, wxLIST_AUTOSIZE );
       SetColumnWidth( 3, wxLIST_AUTOSIZE );
    }
}

void wxFileCtrl::SetWild( const wxString &wild )
{
    m_wild = wild;
    Update();
}

void wxFileCtrl::MakeDir()
{
    wxString new_name( wxT("NewName") );
    wxString path( m_dirName );
    path += wxT("/");
    path += new_name;
    if (wxFileExists(path))
    {
        // try NewName0, NewName1 etc.
        int i = 0;
        do {
            new_name = _("NewName");
            wxString num;
            num.Printf( wxT("%d"), i );
            new_name += num;

            path = m_dirName;
            path += wxT("/");
            path += new_name;
            i++;
        } while (wxFileExists(path));
    }

    wxLogNull log;
    if (!wxMkdir(path))
    {
        wxMessageDialog dialog(this, _("Operation not permitted."), _("Error"), wxOK | wxICON_ERROR );
        dialog.ShowModal();
        return;
    }

    wxFileData *fd = new wxFileData( new_name, path );
    wxListItem item;
    item.m_itemId = 0;
    item.m_col = 0;
    long id = Add( fd, item );

    if (id != -1)
    {
        SortItems( ListCompare, 0 );
        id = FindItem( 0, (long)fd );
        EnsureVisible( id );
        EditLabel( id );
    }
}

void wxFileCtrl::GoToParentDir()
{
    if (m_dirName != wxT("/"))
    {
        wxString fname( wxFileNameFromPath(m_dirName) );
        m_dirName = wxPathOnly( m_dirName );
        if (m_dirName.IsEmpty()) m_dirName = wxT("/");
        Update();
        long id = FindItem( 0, fname );
        if (id != -1)
        {
            SetItemState( id, wxLIST_STATE_SELECTED, wxLIST_STATE_SELECTED );
            EnsureVisible( id );
        }
    }
}

void wxFileCtrl::GoToHomeDir()
{
    wxString s = wxGetUserHome( wxString() );
    m_dirName = s;
    Update();
    SetItemState( 0, wxLIST_STATE_SELECTED, wxLIST_STATE_SELECTED );
    EnsureVisible( 0 );
}

void wxFileCtrl::GoToDir( const wxString &dir )
{
    m_dirName = dir;
    Update();
    SetItemState( 0, wxLIST_STATE_SELECTED, wxLIST_STATE_SELECTED );
    EnsureVisible( 0 );
}

void wxFileCtrl::GetDir( wxString &dir )
{
    dir = m_dirName;
}

void wxFileCtrl::OnListDeleteItem( wxListEvent &event )
{
    wxFileData *fd = (wxFileData*)event.m_item.m_data;
    delete fd;
}

void wxFileCtrl::OnListDeleteAllItems( wxListEvent &WXUNUSED(event) )
{
    wxListItem item;
    item.m_mask = wxLIST_MASK_DATA;

    item.m_itemId = GetNextItem( -1, wxLIST_NEXT_ALL );
    while ( item.m_itemId != -1 )
    {
        GetItem( item );
        wxFileData *fd = (wxFileData*)item.m_data;
        delete fd;
        item.m_data = 0;
        SetItem( item );
        item.m_itemId = GetNextItem( item.m_itemId, wxLIST_NEXT_ALL );
    }
}

void wxFileCtrl::OnListEndLabelEdit( wxListEvent &event )
{
    wxFileData *fd = (wxFileData*)event.m_item.m_data;
    wxASSERT( fd );

    if ((event.GetLabel().IsEmpty()) ||
        (event.GetLabel() == _(".")) ||
        (event.GetLabel() == _("..")) ||
        (event.GetLabel().First( wxT("/") ) != wxNOT_FOUND))
    {
        wxMessageDialog dialog(this, _("Illegal directory name."), _("Error"), wxOK | wxICON_ERROR );
        dialog.ShowModal();
        event.Veto();
        return;
    }

    wxString new_name( wxPathOnly( fd->GetFullName() ) );
    new_name += wxT("/");
    new_name += event.GetLabel();

    wxLogNull log;

    if (wxFileExists(new_name))
    {
        wxMessageDialog dialog(this, _("File name exists already."), _("Error"), wxOK | wxICON_ERROR );
        dialog.ShowModal();
        event.Veto();
    }

    if (wxRenameFile(fd->GetFullName(),new_name))
    {
        fd->SetNewName( new_name, event.GetLabel() );
        SetItemState( event.GetItem(), wxLIST_STATE_SELECTED, wxLIST_STATE_SELECTED );
        EnsureVisible( event.GetItem() );
    }
    else
    {
        wxMessageDialog dialog(this, _("Operation not permitted."), _("Error"), wxOK | wxICON_ERROR );
        dialog.ShowModal();
        event.Veto();
    }
}

//-----------------------------------------------------------------------------
// wxFileDialog
//-----------------------------------------------------------------------------

#define  ID_LIST_MODE     wxID_FILEDLGG
#define  ID_REPORT_MODE   wxID_FILEDLGG + 1
#define  ID_UP_DIR        wxID_FILEDLGG + 5
#define  ID_PARENT_DIR    wxID_FILEDLGG + 6
#define  ID_NEW_DIR       wxID_FILEDLGG + 7
#define  ID_CHOICE        wxID_FILEDLGG + 8
#define  ID_TEXT          wxID_FILEDLGG + 9
#define  ID_LIST_CTRL     wxID_FILEDLGG + 10
#define  ID_ACTIVATED     wxID_FILEDLGG + 11
#define  ID_CHECK         wxID_FILEDLGG + 12

IMPLEMENT_DYNAMIC_CLASS(wxFileDialog,wxDialog)

BEGIN_EVENT_TABLE(wxFileDialog,wxDialog)
        EVT_BUTTON(ID_LIST_MODE, wxFileDialog::OnList)
        EVT_BUTTON(ID_REPORT_MODE, wxFileDialog::OnReport)
        EVT_BUTTON(ID_UP_DIR, wxFileDialog::OnUp)
        EVT_BUTTON(ID_PARENT_DIR, wxFileDialog::OnHome)
        EVT_BUTTON(ID_NEW_DIR, wxFileDialog::OnNew)
        EVT_BUTTON(wxID_OK, wxFileDialog::OnListOk)
        EVT_LIST_ITEM_SELECTED(ID_LIST_CTRL, wxFileDialog::OnSelected)
        EVT_LIST_ITEM_ACTIVATED(ID_LIST_CTRL, wxFileDialog::OnActivated)
        EVT_CHOICE(ID_CHOICE,wxFileDialog::OnChoice)
        EVT_TEXT_ENTER(ID_TEXT,wxFileDialog::OnTextEnter)
        EVT_CHECKBOX(ID_CHECK,wxFileDialog::OnCheck)
END_EVENT_TABLE()

long wxFileDialog::s_lastViewStyle = wxLC_LIST;
bool wxFileDialog::s_lastShowHidden = FALSE;

wxFileDialog::wxFileDialog(wxWindow *parent,
                 const wxString& message,
                 const wxString& defaultDir,
                 const wxString& defaultFile,
                 const wxString& wildCard,
                 long style,
                 const wxPoint& pos ) :
  wxDialog( parent, -1, message, pos, wxDefaultSize, wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER )
{
    wxBeginBusyCursor();

    if (wxConfig::Get(FALSE))
    {
        wxConfig::Get() -> Read(wxT("/wxWindows/wxFileDialog/ViewStyle"), &s_lastViewStyle);
        wxConfig::Get() -> Read(wxT("/wxWindows/wxFileDialog/ShowHidden"), &s_lastShowHidden);
    }

    m_message = message;
    m_dialogStyle = style;

    if (m_dialogStyle == 0) m_dialogStyle = wxOPEN;
    if ((m_dialogStyle & wxMULTIPLE ) && !(m_dialogStyle & wxOPEN))
        m_dialogStyle |= wxOPEN;

    m_dir = defaultDir;
    if ((m_dir.IsEmpty()) || (m_dir == wxT(".")))
    {
        char buf[200];
        m_dir = getcwd( buf, sizeof(buf) );
    }
    m_path = defaultDir;
    m_path += wxT("/");
    m_path += defaultFile;
    m_fileName = defaultFile;
    m_wildCard = wildCard;
    m_filterIndex = 0;
    m_filterExtension = wxEmptyString;

    // interpret wildcards

    if (m_wildCard.IsEmpty())
        m_wildCard = _("All files (*)|*");

    wxStringTokenizer tokens( m_wildCard, wxT("|") );
    wxString firstWild;
    wxString firstWildText;
    if (tokens.CountTokens() == 1)
    {
        firstWildText = tokens.GetNextToken();
        firstWild = firstWildText;
    }
    else
    {
        wxASSERT_MSG( tokens.CountTokens() % 2 == 0, wxT("Wrong file type descripition") );
        firstWildText = tokens.GetNextToken();
        firstWild = tokens.GetNextToken();
    }
    if ( firstWild.Left( 2 ) == wxT("*.") )
        m_filterExtension = firstWild.Mid( 1 );
    if ( m_filterExtension == ".*" ) m_filterExtension = wxEmptyString;

    // layout

    wxBoxSizer *mainsizer = new wxBoxSizer( wxVERTICAL );

    wxBoxSizer *buttonsizer = new wxBoxSizer( wxHORIZONTAL );

    wxBitmapButton *but;

    but = new wxBitmapButton( this, ID_LIST_MODE, wxBitmap( listview_xpm ) );
#if wxUSE_TOOLTIPS
    but->SetToolTip( _("View files as a list view") );
#endif
    buttonsizer->Add( but, 0, wxALL, 5 );

    but = new wxBitmapButton( this, ID_REPORT_MODE, wxBitmap( repview_xpm ) );
#if wxUSE_TOOLTIPS
    but->SetToolTip( _("View files as a detailed view") );
#endif
    buttonsizer->Add( but, 0, wxALL, 5 );

    buttonsizer->Add( 30, 5, 1 );

    but = new wxBitmapButton( this, ID_UP_DIR, wxBitmap( dir_up_xpm ) );
#if wxUSE_TOOLTIPS
    but->SetToolTip( _("Go to parent directory") );
#endif
    buttonsizer->Add( but, 0, wxALL, 5 );

    but = new wxBitmapButton( this, ID_PARENT_DIR, wxBitmap(home_xpm) );
#if wxUSE_TOOLTIPS
    but->SetToolTip( _("Go to home directory") );
#endif
    buttonsizer->Add( but, 0, wxALL, 5);

    buttonsizer->Add( 20, 20 );

    but = new wxBitmapButton( this, ID_NEW_DIR, wxBitmap(new_dir_xpm) );
#if wxUSE_TOOLTIPS
    but->SetToolTip( _("Create new directory") );
#endif
    buttonsizer->Add( but, 0, wxALL, 5 );

    mainsizer->Add( buttonsizer, 0, wxALL | wxEXPAND, 5 );

    wxBoxSizer *staticsizer = new wxBoxSizer( wxHORIZONTAL );
    staticsizer->Add( new wxStaticText( this, -1, _("Current directory:") ), 0, wxRIGHT, 10 );
    m_static = new wxStaticText( this, -1, m_dir );
    staticsizer->Add( m_static, 1 );
    mainsizer->Add( staticsizer, 0, wxEXPAND | wxLEFT|wxRIGHT|wxBOTTOM, 10 );

    if (m_dialogStyle & wxMULTIPLE)
        m_list = new wxFileCtrl( this, ID_LIST_CTRL, m_dir, firstWild, wxDefaultPosition,
                                 wxSize(440,180), s_lastViewStyle | wxSUNKEN_BORDER );
    else
        m_list = new wxFileCtrl( this, ID_LIST_CTRL, m_dir, firstWild, wxDefaultPosition,
                                 wxSize(440,180), s_lastViewStyle | wxSUNKEN_BORDER | wxLC_SINGLE_SEL );
    m_list -> ShowHidden(s_lastShowHidden);
    mainsizer->Add( m_list, 1, wxEXPAND | wxLEFT|wxRIGHT, 10 );

    wxBoxSizer *textsizer = new wxBoxSizer( wxHORIZONTAL );
    m_text = new wxTextCtrl( this, ID_TEXT, m_fileName, wxDefaultPosition, wxDefaultSize, wxPROCESS_ENTER );
    textsizer->Add( m_text, 1, wxCENTER | wxLEFT|wxRIGHT|wxTOP, 10 );
    textsizer->Add( new wxButton( this, wxID_OK, _("OK") ), 0, wxCENTER | wxLEFT|wxRIGHT|wxTOP, 10 );
    mainsizer->Add( textsizer, 0, wxEXPAND );

    wxBoxSizer *choicesizer = new wxBoxSizer( wxHORIZONTAL );
    m_choice = new wxChoice( this, ID_CHOICE );
    choicesizer->Add( m_choice, 1, wxCENTER|wxALL, 10 );
    m_check = new wxCheckBox( this, ID_CHECK, _("Show hidden files") );
    m_check->SetValue( s_lastShowHidden );
    choicesizer->Add( m_check, 0, wxCENTER|wxALL, 10 );
    choicesizer->Add( new wxButton( this, wxID_CANCEL, _("Cancel") ), 0, wxCENTER | wxALL, 10 );
    mainsizer->Add( choicesizer, 0, wxEXPAND );

    m_choice->Append( firstWildText, (void*) new wxString( firstWild ) );
    while (tokens.HasMoreTokens())
    {
        firstWildText = tokens.GetNextToken();
        firstWild = tokens.GetNextToken();
        m_choice->Append( firstWildText, (void*) new wxString( firstWild ) );
    }
    m_choice->SetSelection( 0 );

    SetAutoLayout( TRUE );
    SetSizer( mainsizer );

    mainsizer->Fit( this );
    mainsizer->SetSizeHints( this );

    Centre( wxBOTH );

/*
    if (m_fileName.IsEmpty())
        m_list->SetFocus();
    else
*/
        m_text->SetFocus();

    wxEndBusyCursor();
}

wxFileDialog::~wxFileDialog()
{
    if (wxConfig::Get(FALSE))
    {
        wxConfig::Get() -> Write(wxT("/wxWindows/wxFileDialog/ViewStyle"), s_lastViewStyle);
        wxConfig::Get() -> Write(wxT("/wxWindows/wxFileDialog/ShowHidden"), s_lastShowHidden);
    }
}

void wxFileDialog::OnChoice( wxCommandEvent &event )
{
    int index = (int)event.GetInt();
    wxString *str = (wxString*) m_choice->GetClientData( index );
    m_list->SetWild( *str );
    m_filterIndex = index;
    if ( str -> Left( 2 ) == wxT("*.") )
    {
        m_filterExtension = str -> Mid( 1 );
        if (m_filterExtension == ".*") m_filterExtension = wxEmptyString;
    }
    else
        m_filterExtension = wxEmptyString;
}

void wxFileDialog::OnCheck( wxCommandEvent &event )
{
    m_list->ShowHidden( (s_lastShowHidden = event.GetInt() != 0) );
}

void wxFileDialog::OnActivated( wxListEvent &event )
{
    HandleAction( event.m_item.m_text );
}

void wxFileDialog::OnTextEnter( wxCommandEvent &WXUNUSED(event) )
{
    wxCommandEvent cevent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_OK);
    cevent.SetEventObject( this );
    GetEventHandler()->ProcessEvent( cevent );
}

void wxFileDialog::OnSelected( wxListEvent &event )
{
    if (FindFocus() != m_list) return;

    wxString filename( event.m_item.m_text );
    if (filename == wxT("..")) return;

    wxString dir;
    m_list->GetDir( dir );
    if (dir != wxT("/")) dir += wxT("/");
    dir += filename;
    if (wxDirExists(dir)) return;

    m_text->SetValue( filename );
}

void wxFileDialog::HandleAction( const wxString &fn )
{
    wxString filename( fn );
    wxString dir;
    m_list->GetDir( dir );
    if (filename.IsEmpty()) return;
    if (filename == wxT(".")) return;

    if (filename == wxT(".."))
    {
        m_list->GoToParentDir();
        m_list->SetFocus();
        m_list->GetDir( dir );
        m_static->SetLabel( dir );
        return;
    }

    if (filename == wxT("~"))
    {
        m_list->GoToHomeDir();
        m_list->SetFocus();
        m_list->GetDir( dir );
        m_static->SetLabel( dir );
        return;
    }

    if (filename[0u] == wxT('~'))
    {
        filename.Remove( 0, 1 );
        wxString tmp( wxGetUserHome() );
        tmp += wxT('/');
        tmp += filename;
        filename = tmp;
    }

    if ((filename.Find(wxT('*')) != wxNOT_FOUND) ||
        (filename.Find(wxT('?')) != wxNOT_FOUND))
    {
        if (filename.Find(wxT('/')) != wxNOT_FOUND)
        {
            wxMessageBox(_("Illegal file specification."), _("Error"), wxOK | wxICON_ERROR );
            return;
        }
        m_list->SetWild( filename );
        return;
    }

    if (dir != wxT("/")) dir += wxT("/");
    if (filename[0u] != wxT('/'))
    {
        dir += filename;
        filename = dir;
    }

    if (wxDirExists(filename))
    {
        m_list->GoToDir( filename );
        m_list->GetDir( dir );
        m_static->SetLabel( dir );
        return;
    }


    if ( (m_dialogStyle & wxSAVE) && (m_dialogStyle & wxOVERWRITE_PROMPT) )
    {
        if (filename.Find( wxT('.') ) == wxNOT_FOUND ||
                filename.AfterLast( wxT('.') ).Find( wxT('/') ) != wxNOT_FOUND)
            filename << m_filterExtension;
        if (wxFileExists( filename ))
        {
            wxString msg;
            msg.Printf( _("File '%s' already exists, do you really want to "
                         "overwrite it?"), filename.c_str() );

            if (wxMessageBox(msg, _("Confirm"), wxYES_NO) != wxYES)
                return;
        }
    }
    else if ( m_dialogStyle & wxOPEN )
    {
        if ( !wxFileExists( filename ) )
            if (filename.Find( wxT('.') ) == wxNOT_FOUND ||
                  filename.AfterLast( wxT('.') ).Find( wxT('/') ) != wxNOT_FOUND)
                filename << m_filterExtension;

        if ( m_dialogStyle & wxFILE_MUST_EXIST )
        {
            if ( !wxFileExists( filename ) )
            {
                wxMessageBox(_("Please choose an existing file."), _("Error"), wxOK | wxICON_ERROR );
                return;
            }
        }
    }

    SetPath( filename );

    wxCommandEvent event;
    wxDialog::OnOK(event);
}

void wxFileDialog::OnListOk( wxCommandEvent &WXUNUSED(event) )
{
    HandleAction( m_text->GetValue() );
}

void wxFileDialog::OnList( wxCommandEvent &WXUNUSED(event) )
{
    m_list->ChangeToListMode();
    s_lastViewStyle = wxLC_LIST;
    m_list->SetFocus();
}

void wxFileDialog::OnReport( wxCommandEvent &WXUNUSED(event) )
{
    m_list->ChangeToReportMode();
    s_lastViewStyle = wxLC_REPORT;
    m_list->SetFocus();
}

void wxFileDialog::OnUp( wxCommandEvent &WXUNUSED(event) )
{
    m_list->GoToParentDir();
    m_list->SetFocus();
    wxString dir;
    m_list->GetDir( dir );
    m_static->SetLabel( dir );
}

void wxFileDialog::OnHome( wxCommandEvent &WXUNUSED(event) )
{
    m_list->GoToHomeDir();
    m_list->SetFocus();
    wxString dir;
    m_list->GetDir( dir );
    m_static->SetLabel( dir );
}

void wxFileDialog::OnNew( wxCommandEvent &WXUNUSED(event) )
{
    m_list->MakeDir();
}

void wxFileDialog::SetPath( const wxString& path )
{
    // not only set the full path but also update filename and dir
    m_path = path;
    if ( !!path )
    {
        wxString ext;
        wxSplitPath(path, &m_dir, &m_fileName, &ext);
        if (!ext.IsEmpty())
        {
            m_fileName += wxT(".");
            m_fileName += ext;
        }
    }
}

void wxFileDialog::GetPaths( wxArrayString& paths ) const
{
    paths.Empty();
    if (m_list->GetSelectedItemCount() == 0)
    {
        paths.Add( GetPath() );
        return;
    }

    paths.Alloc( m_list->GetSelectedItemCount() );

    wxString dir;
    m_list->GetDir( dir );
    if (dir != wxT("/")) dir += wxT("/");

    wxListItem item;
    item.m_mask = wxLIST_MASK_TEXT;

    item.m_itemId = m_list->GetNextItem( -1, wxLIST_NEXT_ALL, wxLIST_STATE_SELECTED );
    while ( item.m_itemId != -1 )
    {
        m_list->GetItem( item );
        paths.Add( dir + item.m_text );
        item.m_itemId = m_list->GetNextItem( item.m_itemId,
            wxLIST_NEXT_ALL, wxLIST_STATE_SELECTED );
    }
}

void wxFileDialog::GetFilenames(wxArrayString& files) const
{
    files.Empty();
    if (m_list->GetSelectedItemCount() == 0)
    {
        files.Add( GetFilename() );
        return;
    }
    files.Alloc( m_list->GetSelectedItemCount() );

    wxListItem item;
    item.m_mask = wxLIST_MASK_TEXT;

    item.m_itemId = m_list->GetNextItem( -1, wxLIST_NEXT_ALL, wxLIST_STATE_SELECTED );
    while ( item.m_itemId != -1 )
    {
        m_list->GetItem( item );
        files.Add( item.m_text );
        item.m_itemId = m_list->GetNextItem( item.m_itemId,
            wxLIST_NEXT_ALL, wxLIST_STATE_SELECTED );
    }
}



// ----------------------------------------------------------------------------
// global functions
// ----------------------------------------------------------------------------

wxString
wxFileSelectorEx(const wxChar *message,
                 const wxChar *default_path,
                 const wxChar *default_filename,
                 int *WXUNUSED(indexDefaultExtension),
                 const wxChar *wildcard,
                 int flags,
                 wxWindow *parent,
                 int x, int y)
{
    // TODO: implement this somehow
    return wxFileSelector(message, default_path, default_filename, wxT(""),
                          wildcard, flags, parent, x, y);
}

wxString wxFileSelector( const wxChar *title,
                      const wxChar *defaultDir, const wxChar *defaultFileName,
                      const wxChar *defaultExtension, const wxChar *filter, int flags,
                      wxWindow *parent, int x, int y )
{
    wxString filter2;
    if ( defaultExtension && !filter )
        filter2 = wxString(wxT("*.")) + wxString(defaultExtension) ;
    else if ( filter )
        filter2 = filter;

    wxString defaultDirString;
    if (defaultDir)
        defaultDirString = defaultDir;

    wxString defaultFilenameString;
    if (defaultFileName)
        defaultFilenameString = defaultFileName;

    wxFileDialog fileDialog( parent, title, defaultDirString, defaultFilenameString, filter2, flags, wxPoint(x, y) );

    if ( fileDialog.ShowModal() == wxID_OK )
    {
        return fileDialog.GetPath();
    }
    else
    {
        return wxEmptyString;
    }
}

wxString wxLoadFileSelector( const wxChar *what, const wxChar *extension, const wxChar *default_name, wxWindow *parent )
{
    wxChar *ext = (wxChar *)extension;

    wxChar prompt[50];
    wxString str = _("Load %s file");
    wxSprintf(prompt, str, what);

    if (*ext == wxT('.')) ext++;
    wxChar wild[60];
    wxSprintf(wild, wxT("*.%s"), ext);

    return wxFileSelector (prompt, (const wxChar *) NULL, default_name, ext, wild, 0, parent);
}

wxString wxSaveFileSelector(const wxChar *what, const wxChar *extension, const wxChar *default_name,
         wxWindow *parent )
{
    wxChar *ext = (wxChar *)extension;

    wxChar prompt[50];
    wxString str = _("Save %s file");
    wxSprintf(prompt, str, what);

    if (*ext == wxT('.')) ext++;
    wxChar wild[60];
    wxSprintf(wild, wxT("*.%s"), ext);

    return wxFileSelector (prompt, (const wxChar *) NULL, default_name, ext, wild, 0, parent);
}






// A module to allow icons table cleanup

class wxFileDialogGenericModule: public wxModule
{
DECLARE_DYNAMIC_CLASS(wxFileDialogGenericModule)
public:
    wxFileDialogGenericModule() {}
    bool OnInit() { return TRUE; }
    void OnExit() { if (g_IconsTable) {delete g_IconsTable; g_IconsTable = NULL;} }
};

IMPLEMENT_DYNAMIC_CLASS(wxFileDialogGenericModule, wxModule)
