Ticket #2219: Applied mouse_scroll_pages option to the mouse wheel.

[midnight-commander.git] / src / screen.c

/* Panel managing.
   Copyright (C) 1994, 1995, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
   2005, 2006, 2007, 2009 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   Written by: 1995 Miguel de Icaza
   1997, 1999 Timur Bakeyev

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */

/** \file screen.c
 *  \brief Source: panel managin module
 */

#include <config.h>

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "lib/global.h"

#include "lib/tty/tty.h"
#include "lib/skin.h"
#include "lib/tty/mouse.h"      /* For Gpm_Event */
#include "lib/tty/key.h"        /* XCTRL and ALT macros  */
#include "lib/filehighlight.h"
#include "lib/mcconfig.h"
#include "lib/vfs/mc-vfs/vfs.h"
#include "lib/unixcompat.h"

#include "dir.h"
#include "panel.h"
#include "boxes.h"
#include "tree.h"
#include "ext.h"                /* regexp_command */
#include "layout.h"             /* Most layout variables are here */
#include "wtools.h"             /* for message (...) */
#include "cmd.h"
#include "command.h"            /* cmdline */
#include "setup.h"              /* For loading/saving panel options */
#include "user.h"
#include "execute.h"
#include "widget.h"
#include "menu.h"               /* menubar_visible */
#include "main-widgets.h"
#include "main.h"
#include "mountlist.h"          /* my_statfs */
#include "selcodepage.h"        /* select_charset () */
#include "charsets.h"           /* get_codepage_id () */
#include "cmddef.h"             /* CK_ cmd name const */
#include "keybind.h"            /* global_keymap_t */

#define ELEMENTS(arr) ( sizeof(arr) / sizeof((arr)[0]) )

#define NORMAL          0
#define SELECTED        1
#define MARKED          2
#define MARKED_SELECTED 3
#define STATUS          5

/*
 * This describes a format item.  The parse_display_format routine parses
 * the user specified format and creates a linked list of format_e structures.
 */
typedef struct format_e
{
    struct format_e *next;
    int requested_field_len;
    int field_len;
    align_crt_t just_mode;
    int expand;
    const char *(*string_fn) (file_entry *, int len);
    char *title;
    const char *id;
} format_e;

/* If true, show the mini-info on the panel */
int show_mini_info = 1;

/* If true, then use stat() on the cwd to determine directory changes */
int fast_reload = 0;

/* If true, use some usability hacks by Torben */
int torben_fj_mode = 0;

/* If true, up/down keys scroll the pane listing by pages */
int panel_scroll_pages = 1;

/* If 1, we use permission hilighting */
int permission_mode = 0;

/* If 1 - then add per file type hilighting */
int filetype_mode = 1;

/* The hook list for the select file function */
Hook *select_file_hook = 0;

const global_keymap_t *panel_map;

static cb_ret_t panel_callback (Widget *, widget_msg_t msg, int parm);
static int panel_event (Gpm_Event * event, void *);
static void paint_frame (WPanel * panel);
static const char *panel_format (WPanel * panel);
static const char *mini_status_format (WPanel * panel);

static char *panel_sort_up_sign = NULL;
static char *panel_sort_down_sign = NULL;

static char *panel_hiddenfiles_sign_show = NULL;
static char *panel_hiddenfiles_sign_hide = NULL;
static char *panel_history_prev_item_sign = NULL;
static char *panel_history_next_item_sign = NULL;
static char *panel_history_show_list_sign = NULL;

/* This macro extracts the number of available lines in a panel */
#define llines(p) (p->widget.lines-3 - (show_mini_info ? 2 : 0))

static void
set_colors (WPanel * panel)
{
    (void) panel;
    tty_set_normal_attrs ();
    tty_setcolor (NORMAL_COLOR);
}

/* Delete format string, it is a linked list */
static void
delete_format (format_e * format)
{
    while (format != NULL)
    {
        format_e *next = format->next;
        g_free (format->title);
        g_free (format);
        format = next;
    }
}

/* This code relies on the default justification!!! */
static void
add_permission_string (char *dest, int width, file_entry * fe, int attr, int color, int is_octal)
{
    int i, r, l;

    l = get_user_permissions (&fe->st);

    if (is_octal)
    {
        /* Place of the access bit in octal mode */
        l = width + l - 3;
        r = l + 1;
    }
    else
    {
        /* The same to the triplet in string mode */
        l = l * 3 + 1;
        r = l + 3;
    }

    for (i = 0; i < width; i++)
    {
        if (i >= l && i < r)
        {
            if (attr == SELECTED || attr == MARKED_SELECTED)
                tty_setcolor (MARKED_SELECTED_COLOR);
            else
                tty_setcolor (MARKED_COLOR);
        }
        else if (color >= 0)
            tty_setcolor (color);
        else
            tty_lowlevel_setcolor (-color);

        tty_print_char (dest[i]);
    }
}

/* String representations of various file attributes */
/* name */
static const char *
string_file_name (file_entry * fe, int len)
{
    static char buffer[MC_MAXPATHLEN * MB_LEN_MAX + 1];

    (void) len;
    g_strlcpy (buffer, fe->fname, sizeof (buffer));
    return buffer;
}

static unsigned int
ilog10 (dev_t n)
{
    unsigned int digits = 0;
    do
    {
        digits++, n /= 10;
    }
    while (n != 0);
    return digits;
}

static void
format_device_number (char *buf, size_t bufsize, dev_t dev)
{
    dev_t major_dev = major (dev);
    dev_t minor_dev = minor (dev);
    unsigned int major_digits = ilog10 (major_dev);
    unsigned int minor_digits = ilog10 (minor_dev);

    g_assert (bufsize >= 1);
    if (major_digits + 1 + minor_digits + 1 <= bufsize)
    {
        g_snprintf (buf, bufsize, "%lu,%lu", (unsigned long) major_dev, (unsigned long) minor_dev);
    }
    else
    {
        g_strlcpy (buf, _("[dev]"), bufsize);
    }
}

/* size */
static const char *
string_file_size (file_entry * fe, int len)
{
    static char buffer[BUF_TINY];

    /* Don't ever show size of ".." since we don't calculate it */
    if (!strcmp (fe->fname, ".."))
    {
        return _("UP--DIR");
    }

#ifdef HAVE_STRUCT_STAT_ST_RDEV
    if (S_ISBLK (fe->st.st_mode) || S_ISCHR (fe->st.st_mode))
        format_device_number (buffer, len + 1, fe->st.st_rdev);
    else
#endif
    {
        size_trunc_len (buffer, (unsigned int) len, fe->st.st_size, 0);
    }
    return buffer;
}

/* bsize */
static const char *
string_file_size_brief (file_entry * fe, int len)
{
    if (S_ISLNK (fe->st.st_mode) && !fe->f.link_to_dir)
    {
        return _("SYMLINK");
    }

    if ((S_ISDIR (fe->st.st_mode) || fe->f.link_to_dir) && strcmp (fe->fname, ".."))
    {
        return _("SUB-DIR");
    }

    return string_file_size (fe, len);
}

/* This functions return a string representation of a file entry */
/* type */
static const char *
string_file_type (file_entry * fe, int len)
{
    static char buffer[2];

    (void) len;
    if (S_ISDIR (fe->st.st_mode))
        buffer[0] = PATH_SEP;
    else if (S_ISLNK (fe->st.st_mode))
    {
        if (fe->f.link_to_dir)
            buffer[0] = '~';
        else if (fe->f.stale_link)
            buffer[0] = '!';
        else
            buffer[0] = '@';
    }
    else if (S_ISCHR (fe->st.st_mode))
        buffer[0] = '-';
    else if (S_ISSOCK (fe->st.st_mode))
        buffer[0] = '=';
    else if (S_ISDOOR (fe->st.st_mode))
        buffer[0] = '>';
    else if (S_ISBLK (fe->st.st_mode))
        buffer[0] = '+';
    else if (S_ISFIFO (fe->st.st_mode))
        buffer[0] = '|';
    else if (S_ISNAM (fe->st.st_mode))
        buffer[0] = '#';
    else if (!S_ISREG (fe->st.st_mode))
        buffer[0] = '?';        /* non-regular of unknown kind */
    else if (is_exe (fe->st.st_mode))
        buffer[0] = '*';
    else
        buffer[0] = ' ';
    buffer[1] = '\0';
    return buffer;
}

/* mtime */
static const char *
string_file_mtime (file_entry * fe, int len)
{
    (void) len;
    return file_date (fe->st.st_mtime);
}

/* atime */
static const char *
string_file_atime (file_entry * fe, int len)
{
    (void) len;
    return file_date (fe->st.st_atime);
}

/* ctime */
static const char *
string_file_ctime (file_entry * fe, int len)
{
    (void) len;
    return file_date (fe->st.st_ctime);
}

/* perm */
static const char *
string_file_permission (file_entry * fe, int len)
{
    (void) len;
    return string_perm (fe->st.st_mode);
}

/* mode */
static const char *
string_file_perm_octal (file_entry * fe, int len)
{
    static char buffer[10];

    (void) len;
    g_snprintf (buffer, sizeof (buffer), "0%06lo", (unsigned long) fe->st.st_mode);
    return buffer;
}

/* nlink */
static const char *
string_file_nlinks (file_entry * fe, int len)
{
    static char buffer[BUF_TINY];

    (void) len;
    g_snprintf (buffer, sizeof (buffer), "%16d", (int) fe->st.st_nlink);
    return buffer;
}

/* inode */
static const char *
string_inode (file_entry * fe, int len)
{
    static char buffer[10];

    (void) len;
    g_snprintf (buffer, sizeof (buffer), "%lu", (unsigned long) fe->st.st_ino);
    return buffer;
}

/* nuid */
static const char *
string_file_nuid (file_entry * fe, int len)
{
    static char buffer[10];

    (void) len;
    g_snprintf (buffer, sizeof (buffer), "%lu", (unsigned long) fe->st.st_uid);
    return buffer;
}

/* ngid */
static const char *
string_file_ngid (file_entry * fe, int len)
{
    static char buffer[10];

    (void) len;
    g_snprintf (buffer, sizeof (buffer), "%lu", (unsigned long) fe->st.st_gid);
    return buffer;
}

/* owner */
static const char *
string_file_owner (file_entry * fe, int len)
{
    (void) len;
    return get_owner (fe->st.st_uid);
}

/* group */
static const char *
string_file_group (file_entry * fe, int len)
{
    (void) len;
    return get_group (fe->st.st_gid);
}

/* mark */
static const char *
string_marked (file_entry * fe, int len)
{
    (void) len;
    return fe->f.marked ? "*" : " ";
}

/* space */
static const char *
string_space (file_entry * fe, int len)
{
    (void) fe;
    (void) len;
    return " ";
}

/* dot */
static const char *
string_dot (file_entry * fe, int len)
{
    (void) fe;
    (void) len;
    return ".";
}

#define GT 1

/* *INDENT-OFF* */
panel_field_t panel_fields[] = {
    {
     "unsorted", 12, 1, J_LEFT_FIT,
     /* TRANSLATORS: one single character to represent 'unsorted' sort mode  */
     /* TRANSLATORS: no need to translate 'sort', it's just a context prefix  */
     N_("sort|u"),
     N_("&Unsorted"), TRUE, FALSE,
     string_file_name,
     (sortfn *) unsorted
    }
    ,
    {
     "name", 12, 1, J_LEFT_FIT,
     /* TRANSLATORS: one single character to represent 'name' sort mode  */
     /* TRANSLATORS: no need to translate 'sort', it's just a context prefix  */
     N_("sort|n"),
     N_("&Name"), TRUE, TRUE,
     string_file_name,
     (sortfn *) sort_name
    }
    ,
    {
     "extension", 12, 1, J_LEFT_FIT,
     /* TRANSLATORS: one single character to represent 'extension' sort mode  */
     /* TRANSLATORS: no need to translate 'sort', it's just a context prefix  */
     N_("sort|e"),
     N_("&Extension"), TRUE, FALSE,
     string_file_name,          /* TODO: string_file_ext */
     (sortfn *) sort_ext
    }
    ,
    {
     "size", 7, 0, J_RIGHT,
     /* TRANSLATORS: one single character to represent 'size' sort mode  */
     /* TRANSLATORS: no need to translate 'sort', it's just a context prefix  */
     N_("sort|s"),
     N_("&Size"), TRUE, TRUE,
     string_file_size,
     (sortfn *) sort_size
    }
    ,
    {
     "bsize", 7, 0, J_RIGHT,
     "",
     N_("Block Size"), FALSE, FALSE,
     string_file_size_brief,
     (sortfn *) sort_size
    }
    ,
    {
     "type", GT, 0, J_LEFT,
     "",
     "", FALSE, TRUE,
     string_file_type,
     NULL
    }
    ,
    {
     "mtime", 12, 0, J_RIGHT,
     /* TRANSLATORS: one single character to represent 'Modify time' sort mode  */
     /* TRANSLATORS: no need to translate 'sort', it's just a context prefix  */
     N_("sort|m"),
     N_("&Modify time"), TRUE, TRUE,
     string_file_mtime,
     (sortfn *) sort_time
    }
    ,
    {
     "atime", 12, 0, J_RIGHT,
     /* TRANSLATORS: one single character to represent 'Access time' sort mode  */
     /* TRANSLATORS: no need to translate 'sort', it's just a context prefix  */
     N_("sort|a"),
     N_("&Access time"), TRUE, TRUE,
     string_file_atime,
     (sortfn *) sort_atime
    }
    ,
    {
     "ctime", 12, 0, J_RIGHT,
     /* TRANSLATORS: one single character to represent 'Change time' sort mode  */
     /* TRANSLATORS: no need to translate 'sort', it's just a context prefix  */
     N_("sort|h"),
     N_("C&Hange time"), TRUE, TRUE,
     string_file_ctime,
     (sortfn *) sort_ctime
    }
    ,
    {
     "perm", 10, 0, J_LEFT,
     "",
     N_("Permission"), FALSE, TRUE,
     string_file_permission,
     NULL
    }
    ,
    {
     "mode", 6, 0, J_RIGHT,
     "",
     N_("Perm"), FALSE, TRUE,
     string_file_perm_octal,
     NULL
    }
    ,
    {
     "nlink", 2, 0, J_RIGHT,
     "",
     N_("Nl"), FALSE, TRUE,
     string_file_nlinks, NULL
    }
    ,
    {
     "inode", 5, 0, J_RIGHT,
     /* TRANSLATORS: one single character to represent 'inode' sort mode  */
     /* TRANSLATORS: no need to translate 'sort', it's just a context prefix  */
     N_("sort|i"),
     N_("&Inode"), TRUE, TRUE,
     string_inode,
     (sortfn *) sort_inode
    }
    ,
    {
     "nuid", 5, 0, J_RIGHT,
     "",
     N_("UID"), FALSE, FALSE,
     string_file_nuid,
     NULL
    }
    ,
    {
     "ngid", 5, 0, J_RIGHT,
     "",
     N_("GID"), FALSE, FALSE,
     string_file_ngid,
     NULL
    }
    ,
    {
     "owner", 8, 0, J_LEFT_FIT,
     "",
     N_("Owner"), FALSE, TRUE,
     string_file_owner,
     NULL
    }
    ,
    {
     "group", 8, 0, J_LEFT_FIT,
     "",
     N_("Group"), FALSE, TRUE,
     string_file_group,
     NULL
    }
    ,
    {
     "mark", 1, 0, J_RIGHT,
     "",
     " ", FALSE, TRUE,
     string_marked,
     NULL
    }
    ,
    {
     "|", 1, 0, J_RIGHT,
     "",
     " ", FALSE, TRUE,
     NULL,
     NULL
    }
    ,
    {
     "space", 1, 0, J_RIGHT,
     "",
     " ", FALSE, TRUE,
     string_space,
     NULL
    }
    ,
    {
     "dot", 1, 0, J_RIGHT,
     "",
     " ", FALSE, FALSE,
     string_dot,
     NULL
    }
    ,
    {
     NULL, 0, 0, J_RIGHT, NULL, NULL, FALSE, FALSE, NULL, NULL
    }
};
/* *INDENT-ON* */

static int
file_compute_color (int attr, file_entry * fe)
{
    switch (attr)
    {
    case SELECTED:
        return (SELECTED_COLOR);
    case MARKED:
        return (MARKED_COLOR);
    case MARKED_SELECTED:
        return (MARKED_SELECTED_COLOR);
    case STATUS:
        return (NORMAL_COLOR);
    case NORMAL:
    default:
        if (!filetype_mode)
            return (NORMAL_COLOR);
    }

    return mc_fhl_get_color (mc_filehighlight, fe);
}

/* Formats the file number file_index of panel in the buffer dest */
static void
format_file (char *dest, int limit, WPanel * panel, int file_index, int width, int attr,
             int isstatus)
{
    int color, length, empty_line;
    const char *txt;
    format_e *format, *home;
    file_entry *fe;

    (void) dest;
    (void) limit;
    length = 0;
    empty_line = (file_index >= panel->count);
    home = (isstatus) ? panel->status_format : panel->format;
    fe = &panel->dir.list[file_index];

    if (!empty_line)
        color = file_compute_color (attr, fe);
    else
        color = NORMAL_COLOR;

    for (format = home; format; format = format->next)
    {
        if (length == width)
            break;

        if (format->string_fn)
        {
            int len, perm;
            char *preperad_text;

            if (empty_line)
                txt = " ";
            else
                txt = (*format->string_fn) (fe, format->field_len);

            len = format->field_len;
            if (len + length > width)
                len = width - length;
            if (len <= 0)
                break;

            perm = 0;
            if (permission_mode)
            {
                if (!strcmp (format->id, "perm"))
                    perm = 1;
                else if (!strcmp (format->id, "mode"))
                    perm = 2;
            }

            if (color >= 0)
                tty_setcolor (color);
            else
                tty_lowlevel_setcolor (-color);

            preperad_text = (char *) str_fit_to_term (txt, len, format->just_mode);
            if (perm)
                add_permission_string (preperad_text, format->field_len, fe, attr, color, perm - 1);
            else
                tty_print_string (preperad_text);

            length += len;
        }
        else
        {
            if (attr == SELECTED || attr == MARKED_SELECTED)
                tty_setcolor (SELECTED_COLOR);
            else
                tty_setcolor (NORMAL_COLOR);
            tty_print_one_vline ();
            length++;
        }
    }

    if (length < width)
        tty_draw_hline (-1, -1, ' ', width - length);
}

static void
repaint_file (WPanel * panel, int file_index, int mv, int attr, int isstatus)
{
    int second_column = 0;
    int width;
    int offset = 0;
    char buffer[BUF_MEDIUM];

    gboolean panel_is_split = !isstatus && panel->split;

    width = panel->widget.cols - 2;

    if (panel_is_split)
    {
        second_column = (file_index - panel->top_file) / llines (panel);
        width = width / 2 - 1;

        if (second_column != 0)
        {
            offset = 1 + width;
            /*width = (panel->widget.cols-2) - (panel->widget.cols-2)/2 - 1; */
            width = panel->widget.cols - offset - 2;
        }
    }

    /* Nothing to paint */
    if (width <= 0)
        return;

    if (mv)
    {
        if (panel_is_split)
            widget_move (&panel->widget,
                         (file_index - panel->top_file) % llines (panel) + 2, offset + 1);
        else
            widget_move (&panel->widget, file_index - panel->top_file + 2, 1);
    }

    format_file (buffer, sizeof (buffer), panel, file_index, width, attr, isstatus);

    if (panel_is_split)
    {
        if (second_column)
            tty_print_char (' ');
        else
        {
            tty_setcolor (NORMAL_COLOR);
            tty_print_one_vline ();
        }
    }
}

static void
display_mini_info (WPanel * panel)
{
    if (!show_mini_info)
        return;

    widget_move (&panel->widget, llines (panel) + 3, 1);

    if (panel->searching)
    {
        tty_setcolor (INPUT_COLOR);
        tty_print_char ('/');
        tty_print_string (str_fit_to_term (panel->search_buffer, panel->widget.cols - 3, J_LEFT));
        return;
    }

    /* Status resolves links and show them */
    set_colors (panel);

    if (S_ISLNK (panel->dir.list[panel->selected].st.st_mode))
    {
        char *lc_link, link_target[MC_MAXPATHLEN];
        int len;

        lc_link = concat_dir_and_file (panel->cwd, panel->dir.list[panel->selected].fname);
        len = mc_readlink (lc_link, link_target, MC_MAXPATHLEN - 1);
        g_free (lc_link);
        if (len > 0)
        {
            link_target[len] = 0;
            tty_print_string ("-> ");
            tty_print_string (str_fit_to_term (link_target, panel->widget.cols - 5, J_LEFT_FIT));
        }
        else
            tty_print_string (str_fit_to_term (_("<readlink failed>"),
                                               panel->widget.cols - 2, J_LEFT));
    }
    else if (strcmp (panel->dir.list[panel->selected].fname, "..") == 0)
    {
        /* FIXME:
         * while loading directory (do_load_dir() and do_reload_dir()),
         * the actual stat info about ".." directory isn't got;
         * so just don't display incorrect info about ".." directory */
        tty_print_string (str_fit_to_term (_("UP--DIR"), panel->widget.cols - 2, J_LEFT));
    }
    else
        /* Default behavior */
        repaint_file (panel, panel->selected, 0, STATUS, 1);
}

static void
paint_dir (WPanel * panel)
{
    int i;
    int color;                  /* Color value of the line */
    int items;                  /* Number of items */

    items = llines (panel) * (panel->split ? 2 : 1);

    for (i = 0; i < items; i++)
    {
        if (i + panel->top_file >= panel->count)
            color = 0;
        else
        {
            color = 2 * (panel->dir.list[i + panel->top_file].f.marked);
            color += (panel->selected == i + panel->top_file && panel->active);
        }
        repaint_file (panel, i + panel->top_file, 1, color, 0);
    }
    tty_set_normal_attrs ();
}

static void
display_total_marked_size (WPanel * panel, int y, int x, gboolean size_only)
{
    char buffer[BUF_SMALL], b_bytes[BUF_SMALL], *buf;
    int cols;

    if (panel->marked <= 0)
        return;

    buf = size_only ? b_bytes : buffer;
    cols = panel->widget.cols - 2;

    /*
     * This is a trick to use two ngettext() calls in one sentence.
     * First make "N bytes", then insert it into "X in M files".
     */
    g_snprintf (b_bytes, sizeof (b_bytes),
                ngettext ("%s byte", "%s bytes", (unsigned long) panel->total),
                size_trunc_sep (panel->total));
    if (!size_only)
        g_snprintf (buffer, sizeof (buffer),
                    ngettext ("%s in %d file", "%s in %d files", panel->marked),
                    b_bytes, panel->marked);

    /* don't forget spaces around buffer content */
    buf = (char *) str_trunc (buf, cols - 4);

    if (x < 0)
        /* center in panel */
        x = (panel->widget.cols - str_term_width1 (buf)) / 2 - 1;

    /*
     * y == llines (panel) + 2      for mini_info_separator
     * y == panel->widget.lines - 1 for panel bottom frame
     */
    widget_move (&panel->widget, y, x);
    tty_setcolor (MARKED_COLOR);
    tty_printf (" %s ", buf);
}

static void
mini_info_separator (WPanel * panel)
{
    if (show_mini_info)
    {
        const int y = llines (panel) + 2;

        tty_setcolor (NORMAL_COLOR);
        tty_draw_hline (panel->widget.y + y, panel->widget.x + 1,
                        ACS_HLINE, panel->widget.cols - 2);
        /* Status displays total marked size.
         * Centered in panel, full format. */
        display_total_marked_size (panel, y, -1, FALSE);
    }
}

static void
show_free_space (WPanel * panel)
{
    /* Used to figure out how many free space we have */
    static struct my_statfs myfs_stats;
    /* Old current working directory for displaying free space */
    static char *old_cwd = NULL;

    /* Don't try to stat non-local fs */
    if (!vfs_file_is_local (panel->cwd) || !free_space)
        return;

    if (old_cwd == NULL || strcmp (old_cwd, panel->cwd) != 0)
    {
        char rpath[PATH_MAX];

        init_my_statfs ();
        g_free (old_cwd);
        old_cwd = g_strdup (panel->cwd);

        if (mc_realpath (panel->cwd, rpath) == NULL)
            return;

        my_statfs (&myfs_stats, rpath);
    }

    if (myfs_stats.avail > 0 || myfs_stats.total > 0)
    {
        char buffer1[6], buffer2[6], tmp[BUF_SMALL];
        size_trunc_len (buffer1, sizeof (buffer1) - 1, myfs_stats.avail, 1);
        size_trunc_len (buffer2, sizeof (buffer2) - 1, myfs_stats.total, 1);
        g_snprintf (tmp, sizeof (tmp), " %s/%s (%d%%) ", buffer1, buffer2,
                    myfs_stats.total > 0 ?
                    (int) (100 * (double) myfs_stats.avail / myfs_stats.total) : 0);
        widget_move (&panel->widget, panel->widget.lines - 1,
                     panel->widget.cols - 2 - (int) strlen (tmp));
        tty_setcolor (NORMAL_COLOR);
        tty_print_string (tmp);
    }
}

static void
show_dir (WPanel * panel)
{
    gchar *tmp;
    set_colors (panel);
    draw_box (panel->widget.parent,
              panel->widget.y, panel->widget.x, panel->widget.lines, panel->widget.cols);

    if (show_mini_info)
    {
        widget_move (&panel->widget, llines (panel) + 2, 0);
        tty_print_alt_char (ACS_LTEE);
        widget_move (&panel->widget, llines (panel) + 2, panel->widget.cols - 1);
        tty_print_alt_char (ACS_RTEE);
    }

    widget_move (&panel->widget, 0, 1);
    tty_print_string (panel_history_prev_item_sign);

    tmp = (show_dot_files) ? panel_hiddenfiles_sign_show : panel_hiddenfiles_sign_hide;
    tmp =
        g_strdup_printf ("%s[%s]%s", tmp, panel_history_show_list_sign,
                         panel_history_next_item_sign);

    widget_move (&panel->widget, 0, panel->widget.cols - 6);
    tty_print_string (tmp);

    g_free (tmp);

    if (panel->active)
        tty_setcolor (REVERSE_COLOR);

    widget_move (&panel->widget, 0, 3);

    tty_printf (" %s ",
                str_term_trim (strip_home_and_password (panel->cwd),
                               min (max (panel->widget.cols - 12, 0), panel->widget.cols)));

    if (!show_mini_info)
    {
        if (panel->marked == 0)
        {
            /* Show size of curret file in the bottom of panel */
            if (S_ISREG (panel->dir.list[panel->selected].st.st_mode))
            {
                char buffer[BUF_SMALL];

                g_snprintf (buffer, sizeof (buffer), " %s ",
                            size_trunc_sep (panel->dir.list[panel->selected].st.st_size));
                tty_setcolor (NORMAL_COLOR);
                widget_move (&panel->widget, panel->widget.lines - 1, 4);
                tty_print_string (buffer);
            }
        }
        else
        {
            /* Show total size of marked files
             * In the bottom of panel, display size only. */
            display_total_marked_size (panel, panel->widget.lines - 1, 2, TRUE);
        }
    }

    show_free_space (panel);

    if (panel->active)
        tty_set_normal_attrs ();
}

/* To be used only by long_frame and full_frame to adjust top_file */
static void
adjust_top_file (WPanel * panel)
{
    int old_top = panel->top_file;

    if (panel->selected - old_top > llines (panel))
        panel->top_file = panel->selected;
    if (old_top - panel->count > llines (panel))
        panel->top_file = panel->count - llines (panel);
}

/* Repaint everything, including frame and separator */
static void
paint_panel (WPanel * panel)
{
    paint_frame (panel);        /* including show_dir */
    paint_dir (panel);
    mini_info_separator (panel);
    display_mini_info (panel);
    panel->dirty = 0;
}

/* add "#enc:encodning" to end of path */
/* if path end width a previous #enc:, only encoding is changed no additional 
 * #enc: is appended 
 * retun new string
 */
static char *
add_encoding_to_path (const char *path, const char *encoding)
{
    char *result;
    char *semi;
    char *slash;

    semi = g_strrstr (path, "#enc:");

    if (semi != NULL)
    {
        slash = strchr (semi, PATH_SEP);
        if (slash != NULL)
        {
            result = g_strconcat (path, "/#enc:", encoding, (char *) NULL);
        }
        else
        {
            *semi = 0;
            result = g_strconcat (path, "/#enc:", encoding, (char *) NULL);
            *semi = '#';
        }
    }
    else
    {
        result = g_strconcat (path, "/#enc:", encoding, (char *) NULL);
    }

    return result;
}

char *
remove_encoding_from_path (const char *path)
{
    GString *ret;
    GString *tmp_path, *tmp_conv;
    char *tmp, *tmp2;
    const char *enc;
    GIConv converter;

    ret = g_string_new ("");
    tmp_conv = g_string_new ("");

    tmp_path = g_string_new (path);

    while ((tmp = g_strrstr (tmp_path->str, "/#enc:")) != NULL)
    {
        enc = vfs_get_encoding ((const char *) tmp);
        converter = enc ? str_crt_conv_to (enc) : str_cnv_to_term;
        if (converter == INVALID_CONV)
            converter = str_cnv_to_term;

        tmp2 = tmp + 1;
        while (*tmp2 && *tmp2 != '/')
            tmp2++;

        if (*tmp2)
        {
            str_vfs_convert_from (converter, tmp2, tmp_conv);
            g_string_prepend (ret, tmp_conv->str);
            g_string_set_size (tmp_conv, 0);
        }
        g_string_set_size (tmp_path, tmp - tmp_path->str);
        str_close_conv (converter);
    }
    g_string_prepend (ret, tmp_path->str);
    g_string_free (tmp_path, TRUE);
    g_string_free (tmp_conv, TRUE);

    tmp = ret->str;
    g_string_free (ret, FALSE);
    return tmp;
}

/*
 * Repaint the contents of the panels without frames.  To schedule panel
 * for repainting, set panel->dirty to 1.  There are many reasons why
 * the panels need to be repainted, and this is a costly operation, so
 * it's done once per event.
 */
void
update_dirty_panels (void)
{
    if (current_panel->dirty)
        paint_panel (current_panel);

    if ((get_other_type () == view_listing) && other_panel->dirty)
        paint_panel (other_panel);
}

static void
do_select (WPanel * panel, int i)
{
    if (i != panel->selected)
    {
        panel->dirty = 1;
        panel->selected = i;
        panel->top_file = panel->selected - (panel->widget.lines - 2) / 2;
        if (panel->top_file < 0)
            panel->top_file = 0;
    }
}

static void
do_try_to_select (WPanel * panel, const char *name)
{
    int i;
    char *subdir;

    if (!name)
    {
        do_select (panel, 0);
        return;
    }

    /* We only want the last component of the directory,
     * and from this only the name without suffix. */
    subdir = vfs_strip_suffix_from_filename (x_basename (name));

    /* Search that subdirectory, if found select it */
    for (i = 0; i < panel->count; i++)
    {
        if (strcmp (subdir, panel->dir.list[i].fname) == 0)
        {
            do_select (panel, i);
            g_free (subdir);
            return;
        }
    }

    /* Try to select a file near the file that is missing */
    if (panel->selected >= panel->count)
        do_select (panel, panel->count - 1);
    g_free (subdir);
}

void
try_to_select (WPanel * panel, const char *name)
{
    do_try_to_select (panel, name);
    select_item (panel);
}

void
panel_update_cols (Widget * widget, int frame_size)
{
    int cols, origin;

    if (horizontal_split)
    {
        widget->cols = COLS;
        return;
    }

    if (frame_size == frame_full)
    {
        cols = COLS;
        origin = 0;
    }
    else
    {
        if (widget == get_panel_widget (0))
        {
            cols = first_panel_size;
            origin = 0;
        }
        else
        {
            cols = COLS - first_panel_size;
            origin = first_panel_size;
        }
    }

    widget->cols = cols;
    widget->x = origin;
}

extern int saving_setup;
static char *
panel_save_name (WPanel * panel)
{
    /* If the program is shuting down */
    if ((midnight_shutdown && auto_save_setup) || saving_setup)
        return g_strdup (panel->panel_name);
    else
        return g_strconcat ("Temporal:", panel->panel_name, (char *) NULL);
}

void
panel_clean_dir (WPanel * panel)
{
    int count = panel->count;

    panel->count = 0;
    panel->top_file = 0;
    panel->selected = 0;
    panel->marked = 0;
    panel->dirs_marked = 0;
    panel->total = 0;
    panel->searching = 0;
    panel->is_panelized = 0;
    panel->dirty = 1;

    clean_dir (&panel->dir, count);
}

static void
panel_destroy (WPanel * p)
{
    size_t i;

    char *name = panel_save_name (p);

    panel_save_setup (p, name);
    panel_clean_dir (p);

    /* save and clean history */
    if (p->dir_history)
    {
        history_put (p->hist_name, p->dir_history);

        p->dir_history = g_list_first (p->dir_history);
        g_list_foreach (p->dir_history, (GFunc) g_free, NULL);
        g_list_free (p->dir_history);
    }

    g_free (p->hist_name);

    delete_format (p->format);
    delete_format (p->status_format);

    g_free (p->user_format);
    for (i = 0; i < LIST_TYPES; i++)
        g_free (p->user_status_format[i]);
    g_free (p->dir.list);
    g_free (p->panel_name);
    g_free (name);
}

static void
panel_format_modified (WPanel * panel)
{
    panel->format_modified = 1;
}

/* Panel creation */
/* The parameter specifies the name of the panel for setup retieving */
WPanel *
panel_new (const char *panel_name)
{
    return panel_new_with_dir (panel_name, NULL);
}

/* Panel creation for specified directory */
/* The parameter specifies the name of the panel for setup retieving */
/* and the path of working panel directory. If path is NULL then */
/* panel will be created for current directory */
WPanel *
panel_new_with_dir (const char *panel_name, const char *wpath)
{
    WPanel *panel;
    char *section;
    int i, err;
    char curdir[MC_MAXPATHLEN];

    panel = g_new0 (WPanel, 1);

    /* No know sizes of the panel at startup */
    init_widget (&panel->widget, 0, 0, 0, 0, panel_callback, panel_event);

    /* We do not want the cursor */
    widget_want_cursor (panel->widget, 0);

    if (wpath)
    {
        g_strlcpy (panel->cwd, wpath, sizeof (panel->cwd));
        mc_get_current_wd (curdir, sizeof (curdir) - 2);
    }
    else
        mc_get_current_wd (panel->cwd, sizeof (panel->cwd) - 2);

    strcpy (panel->lwd, ".");

    panel->hist_name = g_strconcat ("Dir Hist ", panel_name, (char *) NULL);
    panel->dir_history = history_get (panel->hist_name);
    directory_history_add (panel, panel->cwd);

    panel->dir.list = g_new (file_entry, MIN_FILES);
    panel->dir.size = MIN_FILES;
    panel->active = 0;
    panel->filter = 0;
    panel->split = 0;
    panel->top_file = 0;
    panel->selected = 0;
    panel->marked = 0;
    panel->total = 0;
    panel->reverse = 0;
    panel->dirty = 1;
    panel->searching = 0;
    panel->dirs_marked = 0;
    panel->is_panelized = 0;
    panel->format = 0;
    panel->status_format = 0;
    panel->format_modified = 1;

    panel->panel_name = g_strdup (panel_name);
    panel->user_format = g_strdup (DEFAULT_USER_FORMAT);

    for (i = 0; i < LIST_TYPES; i++)
        panel->user_status_format[i] = g_strdup (DEFAULT_USER_FORMAT);

    panel->search_buffer[0] = 0;
    panel->frame_size = frame_half;
    section = g_strconcat ("Temporal:", panel->panel_name, (char *) NULL);
    if (!mc_config_has_group (mc_main_config, section))
    {
        g_free (section);
        section = g_strdup (panel->panel_name);
    }
    panel_load_setup (panel, section);
    g_free (section);

    /* Load format strings */
    err = set_panel_formats (panel);
    if (err != 0)
        set_panel_formats (panel);

    /* Because do_load_dir lists files in current directory */
    if (wpath)
        mc_chdir (wpath);

    /* Load the default format */
    panel->count =
        do_load_dir (panel->cwd, &panel->dir, panel->current_sort_field->sort_routine,
                     panel->reverse, panel->case_sensitive, panel->exec_first, panel->filter);

    /* Restore old right path */
    if (wpath)
        mc_chdir (curdir);

    return panel;
}

void
panel_reload (WPanel * panel)
{
    struct stat current_stat;

    if (fast_reload && !stat (panel->cwd, &current_stat)
        && current_stat.st_ctime == panel->dir_stat.st_ctime
        && current_stat.st_mtime == panel->dir_stat.st_mtime)
        return;

    while (mc_chdir (panel->cwd) == -1)
    {
        char *last_slash;

        if (panel->cwd[0] == PATH_SEP && panel->cwd[1] == 0)
        {
            panel_clean_dir (panel);
            panel->count = set_zero_dir (&panel->dir) ? 1 : 0;
            return;
        }
        last_slash = strrchr (panel->cwd, PATH_SEP);
        if (!last_slash || last_slash == panel->cwd)
            strcpy (panel->cwd, PATH_SEP_STR);
        else
            *last_slash = 0;
        memset (&(panel->dir_stat), 0, sizeof (panel->dir_stat));
        show_dir (panel);
    }

    panel->count =
        do_reload_dir (panel->cwd, &panel->dir, panel->current_sort_field->sort_routine,
                       panel->count, panel->reverse, panel->case_sensitive,
                       panel->exec_first, panel->filter);

    panel->dirty = 1;
    if (panel->selected >= panel->count)
        do_select (panel, panel->count - 1);

    recalculate_panel_summary (panel);
}

static void
panel_paint_sort_info (WPanel * panel)
{
    const char *sort_sign = (panel->reverse) ? panel_sort_down_sign : panel_sort_up_sign;
    char *str;

    if (*panel->current_sort_field->hotkey == '\0')
        return;

    str = g_strdup_printf ("%s%s", sort_sign, Q_ (panel->current_sort_field->hotkey));

    widget_move (&panel->widget, 1, 1);
    tty_print_string (str);
    g_free (str);
}

static gchar *
panel_get_title_without_hotkey (const char *title)
{
    char *translated_title;
    char *hkey;

    if (title == NULL)
        return NULL;
    if (title[0] == '\0')
        return g_strdup ("");

    translated_title = g_strdup (_(title));

    hkey = strchr (translated_title, '&');
    if ((hkey != NULL) && (hkey[1] != '\0'))
        memmove ((void *) hkey, (void *) hkey + 1, strlen (hkey));

    return translated_title;
}

static void
paint_frame (WPanel * panel)
{
    int side, width;
    GString *format_txt;

    if (!panel->split)
        adjust_top_file (panel);

    widget_erase (&panel->widget);
    show_dir (panel);

    widget_move (&panel->widget, 1, 1);

    for (side = 0; side <= panel->split; side++)
    {
        format_e *format;

        if (side)
        {
            tty_setcolor (NORMAL_COLOR);
            tty_print_one_vline ();
            width = panel->widget.cols - panel->widget.cols / 2 - 1;
        }
        else if (panel->split)
            width = panel->widget.cols / 2 - 3;
        else
            width = panel->widget.cols - 2;

        format_txt = g_string_new ("");
        for (format = panel->format; format; format = format->next)
        {
            if (format->string_fn)
            {
                g_string_set_size (format_txt, 0);

                if (panel->list_type == list_long
                    && strcmp (format->id, panel->current_sort_field->id) == 0)
                    g_string_append (format_txt,
                                     (panel->reverse) ? panel_sort_down_sign : panel_sort_up_sign);

                g_string_append (format_txt, format->title);
                if (strcmp (format->id, "name") == 0 && panel->filter && *panel->filter)
                {
                    g_string_append (format_txt, " [");
                    g_string_append (format_txt, panel->filter);
                    g_string_append (format_txt, "]");
                }

                tty_setcolor (MARKED_COLOR);
                tty_print_string (str_fit_to_term (format_txt->str, format->field_len,
                                                   J_CENTER_LEFT));
                width -= format->field_len;
            }
            else
            {
                tty_setcolor (NORMAL_COLOR);
                tty_print_one_vline ();
                width--;
            }
        }
        g_string_free (format_txt, TRUE);

        if (width > 0)
            tty_draw_hline (-1, -1, ' ', width);
    }

    if (panel->list_type != list_long)
        panel_paint_sort_info (panel);
}

static const char *
parse_panel_size (WPanel * panel, const char *format, int isstatus)
{
    int frame = frame_half;
    format = skip_separators (format);

    if (!strncmp (format, "full", 4))
    {
        frame = frame_full;
        format += 4;
    }
    else if (!strncmp (format, "half", 4))
    {
        frame = frame_half;
        format += 4;
    }

    if (!isstatus)
    {
        panel->frame_size = frame;
        panel->split = 0;
    }

    /* Now, the optional column specifier */
    format = skip_separators (format);

    if (*format == '1' || *format == '2')
    {
        if (!isstatus)
            panel->split = *format == '2';
        format++;
    }

    if (!isstatus)
        panel_update_cols (&(panel->widget), panel->frame_size);

    return skip_separators (format);
}

/* Format is:

   all              := panel_format? format
   panel_format     := [full|half] [1|2]
   format           := one_format_e
   | format , one_format_e

   one_format_e     := just format.id [opt_size]
   just             := [<=>]
   opt_size         := : size [opt_expand]
   size             := [0-9]+
   opt_expand       := +

 */

static format_e *
parse_display_format (WPanel * panel, const char *format, char **error, int isstatus,
                      int *res_total_cols)
{
    format_e *darr, *old = 0, *home = 0;        /* The formats we return */
    int total_cols = 0;         /* Used columns by the format */
    int set_justify;            /* flag: set justification mode? */
    align_crt_t justify = J_LEFT;       /* Which mode. */
    size_t i;

    static size_t i18n_timelength = 0;  /* flag: check ?Time length at startup */

    *error = 0;

    if (i18n_timelength == 0)
    {
        i18n_timelength = i18n_checktimelength ();      /* Musn't be 0 */

        for (i = 0; panel_fields[i].id != NULL; i++)
            if (strcmp ("time", panel_fields[i].id + 1) == 0)
                panel_fields[i].min_size = i18n_timelength;
    }

    /*
     * This makes sure that the panel and mini status full/half mode
     * setting is equal
     */
    format = parse_panel_size (panel, format, isstatus);

    while (*format)
    {                           /* format can be an empty string */
        int found = 0;

        darr = g_new0 (format_e, 1);

        /* I'm so ugly, don't look at me :-) */
        if (!home)
            home = old = darr;

        old->next = darr;
        darr->next = 0;
        old = darr;

        format = skip_separators (format);

        if (strchr ("<=>", *format))
        {
            set_justify = 1;
            switch (*format)
            {
            case '<':
                justify = J_LEFT;
                break;
            case '=':
                justify = J_CENTER;
                break;
            case '>':
            default:
                justify = J_RIGHT;
                break;
            }
            format = skip_separators (format + 1);
        }
        else
            set_justify = 0;

        for (i = 0; panel_fields[i].id != NULL; i++)
        {
            size_t klen = strlen (panel_fields[i].id);

            if (strncmp (format, panel_fields[i].id, klen) != 0)
                continue;

            format += klen;

            darr->requested_field_len = panel_fields[i].min_size;
            darr->string_fn = panel_fields[i].string_fn;
            darr->title = panel_get_title_without_hotkey (panel_fields[i].title_hotkey);

            darr->id = panel_fields[i].id;
            darr->expand = panel_fields[i].expands;
            darr->just_mode = panel_fields[i].default_just;

            if (set_justify)
            {
                if (IS_FIT (darr->just_mode))
                    darr->just_mode = MAKE_FIT (justify);
                else
                    darr->just_mode = justify;
            }
            found = 1;

            format = skip_separators (format);

            /* If we have a size specifier */
            if (*format == ':')
            {
                int req_length;

                /* If the size was specified, we don't want
                 * auto-expansion by default
                 */
                darr->expand = 0;
                format++;
                req_length = atoi (format);
                darr->requested_field_len = req_length;

                format = skip_numbers (format);

                /* Now, if they insist on expansion */
                if (*format == '+')
                {
                    darr->expand = 1;
                    format++;
                }

            }

            break;
        }
        if (!found)
        {
            char *tmp_format = g_strdup (format);

            int pos = min (8, strlen (format));
            delete_format (home);
            tmp_format[pos] = 0;
            *error = g_strconcat (_("Unknown tag on display format: "), tmp_format, (char *) NULL);
            g_free (tmp_format);
            return 0;
        }
        total_cols += darr->requested_field_len;
    }

    *res_total_cols = total_cols;
    return home;
}

static format_e *
use_display_format (WPanel * panel, const char *format, char **error, int isstatus)
{
#define MAX_EXPAND 4
    int expand_top = 0;         /* Max used element in expand */
    int usable_columns;         /* Usable columns in the panel */
    int total_cols = 0;
    int i;
    format_e *darr, *home;

    if (!format)
        format = DEFAULT_USER_FORMAT;

    home = parse_display_format (panel, format, error, isstatus, &total_cols);

    if (*error)
        return 0;

    panel->dirty = 1;

    /* Status needn't to be split */
    usable_columns = ((panel->widget.cols - 2) / ((isstatus)
                                                  ? 1
                                                  : (panel->split + 1))) - (!isstatus
                                                                            && panel->split);

    /* Look for the expandable fields and set field_len based on the requested field len */
    for (darr = home; darr && expand_top < MAX_EXPAND; darr = darr->next)
    {
        darr->field_len = darr->requested_field_len;
        if (darr->expand)
            expand_top++;
    }

    /* If we used more columns than the available columns, adjust that */
    if (total_cols > usable_columns)
    {
        int pdif, dif = total_cols - usable_columns;

        while (dif)
        {
            pdif = dif;
            for (darr = home; darr; darr = darr->next)
            {
                if (dif && darr->field_len - 1)
                {
                    darr->field_len--;
                    dif--;
                }
            }

            /* avoid endless loop if num fields > 40 */
            if (pdif == dif)
                break;
        }
        total_cols = usable_columns;    /* give up, the rest should be truncated */
    }

    /* Expand the available space */
    if ((usable_columns > total_cols) && expand_top)
    {
        int spaces = (usable_columns - total_cols) / expand_top;
        int extra = (usable_columns - total_cols) % expand_top;

        for (i = 0, darr = home; darr && (i < expand_top); darr = darr->next)
            if (darr->expand)
            {
                darr->field_len += (spaces + ((i == 0) ? extra : 0));
                i++;
            }
    }
    return home;
}

/* Switches the panel to the mode specified in the format           */
/* Seting up both format and status string. Return: 0 - on success; */
/* 1 - format error; 2 - status error; 3 - errors in both formats.  */
int
set_panel_formats (WPanel * p)
{
    format_e *form;
    char *err = NULL;
    int retcode = 0;

    form = use_display_format (p, panel_format (p), &err, 0);

    if (err != NULL)
    {
        g_free (err);
        retcode = 1;
    }
    else
    {
        delete_format (p->format);
        p->format = form;
    }

    if (show_mini_info)
    {
        form = use_display_format (p, mini_status_format (p), &err, 1);

        if (err != NULL)
        {
            g_free (err);
            retcode += 2;
        }
        else
        {
            delete_format (p->status_format);
            p->status_format = form;
        }
    }

    panel_format_modified (p);
    panel_update_cols (&(p->widget), p->frame_size);

    if (retcode)
        message (D_ERROR, _("Warning"),
                 _("User supplied format looks invalid, reverting to default."));
    if (retcode & 0x01)
    {
        g_free (p->user_format);
        p->user_format = g_strdup (DEFAULT_USER_FORMAT);
    }
    if (retcode & 0x02)
    {
        g_free (p->user_status_format[p->list_type]);
        p->user_status_format[p->list_type] = g_strdup (DEFAULT_USER_FORMAT);
    }

    return retcode;
}

/* Given the panel->view_type returns the format string to be parsed */
static const char *
panel_format (WPanel * panel)
{
    switch (panel->list_type)
    {

    case list_long:
        return "full perm space nlink space owner space group space size space mtime space name";

    case list_brief:
        return "half 2 type name";

    case list_user:
        return panel->user_format;

    default:
    case list_full:
        return "half type name | size | mtime";
    }
}

static const char *
mini_status_format (WPanel * panel)
{
    if (panel->user_mini_status)
        return panel->user_status_format[panel->list_type];

    switch (panel->list_type)
    {

    case list_long:
        return "full perm space nlink space owner space group space size space mtime space name";

    case list_brief:
        return "half type name space bsize space perm space";

    case list_full:
        return "half type name";

    default:
    case list_user:
        return panel->user_format;
    }
}

/*                          */
/* Panel operation commands */
/*                          */

/* Used to emulate Lynx's entering leaving a directory with the arrow keys */
static cb_ret_t
maybe_cd (int move_up_dir)
{
    if (navigate_with_arrows)
    {
        if (!cmdline->buffer[0])
        {
            if (move_up_dir)
            {
                do_cd ("..", cd_exact);
                return MSG_HANDLED;
            }
            if (S_ISDIR (selection (current_panel)->st.st_mode)
                || link_isdir (selection (current_panel)))
            {
                do_cd (selection (current_panel)->fname, cd_exact);
                return MSG_HANDLED;
            }
        }
    }
    return MSG_NOT_HANDLED;
}

/* Returns the number of items in the given panel */
static int
ITEMS (WPanel * p)
{
    if (p->split)
        return llines (p) * 2;
    else
        return llines (p);
}

/* Select current item and readjust the panel */
void
select_item (WPanel * panel)
{
    int items = ITEMS (panel);

    /* Although currently all over the code we set the selection and
       top file to decent values before calling select_item, I could
       forget it someday, so it's better to do the actual fitting here */

    if (panel->top_file < 0)
        panel->top_file = 0;

    if (panel->selected < 0)
        panel->selected = 0;

    if (panel->selected > panel->count - 1)
        panel->selected = panel->count - 1;

    if (panel->top_file > panel->count - 1)
        panel->top_file = panel->count - 1;

    if ((panel->count - panel->top_file) < items)
    {
        panel->top_file = panel->count - items;
        if (panel->top_file < 0)
            panel->top_file = 0;
    }

    if (panel->selected < panel->top_file)
        panel->top_file = panel->selected;

    if ((panel->selected - panel->top_file) >= items)
        panel->top_file = panel->selected - items + 1;

    panel->dirty = 1;

    execute_hooks (select_file_hook);
}

/* Clears all files in the panel, used only when one file was marked */
void
unmark_files (WPanel * panel)
{
    int i;

    if (!panel->marked)
        return;
    for (i = 0; i < panel->count; i++)
        file_mark (panel, i, 0);

    panel->dirs_marked = 0;
    panel->marked = 0;
    panel->total = 0;
}

static void
unselect_item (WPanel * panel)
{
    repaint_file (panel, panel->selected, 1, 2 * selection (panel)->f.marked, 0);
}

static void
move_down (WPanel * panel)
{
    if (panel->selected + 1 == panel->count)
        return;

    unselect_item (panel);
    panel->selected++;
    if (panel->selected - panel->top_file == ITEMS (panel) && panel_scroll_pages)
    {
        /* Scroll window half screen */
        panel->top_file += ITEMS (panel) / 2;
        if (panel->top_file > panel->count - ITEMS (panel))
            panel->top_file = panel->count - ITEMS (panel);
        paint_dir (panel);
    }
    select_item (panel);
}

static void
move_up (WPanel * panel)
{
    if (panel->selected == 0)
        return;

    unselect_item (panel);
    panel->selected--;
    if (panel->selected < panel->top_file && panel_scroll_pages)
    {
        /* Scroll window half screen */
        panel->top_file -= ITEMS (panel) / 2;
        if (panel->top_file < 0)
            panel->top_file = 0;
        paint_dir (panel);
    }
    select_item (panel);
}

/* Changes the selection by lines (may be negative) */
static void
move_selection (WPanel * panel, int lines)
{
    int new_pos;
    int adjust = 0;

    new_pos = panel->selected + lines;
    if (new_pos >= panel->count)
        new_pos = panel->count - 1;

    if (new_pos < 0)
        new_pos = 0;

    unselect_item (panel);
    panel->selected = new_pos;

    if (panel->selected - panel->top_file >= ITEMS (panel))
    {
        panel->top_file += lines;
        adjust = 1;
    }

    if (panel->selected - panel->top_file < 0)
    {
        panel->top_file += lines;
        adjust = 1;
    }

    if (adjust)
    {
        if (panel->top_file > panel->selected)
            panel->top_file = panel->selected;
        if (panel->top_file < 0)
            panel->top_file = 0;
        paint_dir (panel);
    }
    select_item (panel);
}

static cb_ret_t
move_left (WPanel * panel)
{
    if (panel->split)
    {
        move_selection (panel, -llines (panel));
        return MSG_HANDLED;
    }
    else
        return maybe_cd (1);    /* cd .. */
}

static int
move_right (WPanel * panel)
{
    if (panel->split)
    {
        move_selection (panel, llines (panel));
        return MSG_HANDLED;
    }
    else
        return maybe_cd (0);    /* cd (selection) */
}

static void
prev_page (WPanel * panel)
{
    int items;

    if (!panel->selected && !panel->top_file)
        return;
    unselect_item (panel);
    items = ITEMS (panel);
    if (panel->top_file < items)
        items = panel->top_file;
    if (!items)
        panel->selected = 0;
    else
        panel->selected -= items;
    panel->top_file -= items;

    /* This keeps the selection in a reasonable place */
    if (panel->selected < 0)
        panel->selected = 0;
    if (panel->top_file < 0)
        panel->top_file = 0;
    select_item (panel);
    paint_dir (panel);
}

static void
ctrl_prev_page (WPanel * panel)
{
    (void) panel;
    do_cd ("..", cd_exact);
}

static void
next_page (WPanel * panel)
{
    int items;

    if (panel->selected == panel->count - 1)
        return;
    unselect_item (panel);
    items = ITEMS (panel);
    if (panel->top_file > panel->count - 2 * items)
        items = panel->count - items - panel->top_file;
    if (panel->top_file + items < 0)
        items = -panel->top_file;
    if (!items)
        panel->selected = panel->count - 1;
    else
        panel->selected += items;
    panel->top_file += items;

    /* This keeps the selection in it's relative position */
    if (panel->selected >= panel->count)
        panel->selected = panel->count - 1;
    if (panel->top_file >= panel->count)
        panel->top_file = panel->count - 1;
    select_item (panel);
    paint_dir (panel);
}

static void
ctrl_next_page (WPanel * panel)
{
    if ((S_ISDIR (selection (panel)->st.st_mode) || link_isdir (selection (panel))))
    {
        do_cd (selection (panel)->fname, cd_exact);
    }
}

static void
goto_top_file (WPanel * panel)
{
    unselect_item (panel);
    panel->selected = panel->top_file;
    select_item (panel);
}

static void
goto_middle_file (WPanel * panel)
{
    unselect_item (panel);
    panel->selected = panel->top_file + (ITEMS (panel) / 2);
    if (panel->selected >= panel->count)
        panel->selected = panel->count - 1;
    select_item (panel);
}

static void
goto_bottom_file (WPanel * panel)
{
    unselect_item (panel);
    panel->selected = panel->top_file + ITEMS (panel) - 1;
    if (panel->selected >= panel->count)
        panel->selected = panel->count - 1;
    select_item (panel);
}

static void
move_home (WPanel * panel)
{
    if (panel->selected == 0)
        return;
    unselect_item (panel);

    if (torben_fj_mode)
    {
        int middle_pos = panel->top_file + (ITEMS (panel) / 2);

        if (panel->selected > middle_pos)
        {
            goto_middle_file (panel);
            return;
        }
        if (panel->selected != panel->top_file)
        {
            goto_top_file (panel);
            return;
        }
    }

    panel->top_file = 0;
    panel->selected = 0;

    paint_dir (panel);
    select_item (panel);
}

static void
move_end (WPanel * panel)
{
    if (panel->selected == panel->count - 1)
        return;
    unselect_item (panel);
    if (torben_fj_mode)
    {
        int middle_pos = panel->top_file + (ITEMS (panel) / 2);

        if (panel->selected < middle_pos)
        {
            goto_middle_file (panel);
            return;
        }
        if (panel->selected != (panel->top_file + ITEMS (panel) - 1))
        {
            goto_bottom_file (panel);
            return;
        }
    }

    panel->selected = panel->count - 1;
    paint_dir (panel);
    select_item (panel);
}

/* Recalculate the panels summary information, used e.g. when marked
   files might have been removed by an external command */
void
recalculate_panel_summary (WPanel * panel)
{
    int i;

    panel->marked = 0;
    panel->dirs_marked = 0;
    panel->total = 0;

    for (i = 0; i < panel->count; i++)
        if (panel->dir.list[i].f.marked)
        {
            /* do_file_mark will return immediately if newmark == oldmark.
               So we have to first unmark it to get panel's summary information
               updated. (Norbert) */
            panel->dir.list[i].f.marked = 0;
            do_file_mark (panel, i, 1);
        }
}

/* This routine marks a file or a directory */
void
do_file_mark (WPanel * panel, int idx, int mark)
{
    if (panel->dir.list[idx].f.marked == mark)
        return;

    /* Only '..' can't be marked, '.' isn't visible */
    if (!strcmp (panel->dir.list[idx].fname, ".."))
        return;

    file_mark (panel, idx, mark);
    if (panel->dir.list[idx].f.marked)
    {
        panel->marked++;
        if (S_ISDIR (panel->dir.list[idx].st.st_mode))
        {
            if (panel->dir.list[idx].f.dir_size_computed)
                panel->total += panel->dir.list[idx].st.st_size;
            panel->dirs_marked++;
        }
        else
            panel->total += panel->dir.list[idx].st.st_size;
        set_colors (panel);
    }
    else
    {
        if (S_ISDIR (panel->dir.list[idx].st.st_mode))
        {
            if (panel->dir.list[idx].f.dir_size_computed)
                panel->total -= panel->dir.list[idx].st.st_size;
            panel->dirs_marked--;
        }
        else
            panel->total -= panel->dir.list[idx].st.st_size;
        panel->marked--;
    }
}

static void
do_mark_file (WPanel * panel, int do_move)
{
    do_file_mark (panel, panel->selected, selection (panel)->f.marked ? 0 : 1);
    if (mark_moves_down && do_move)
        move_down (panel);
}

static void
mark_file (WPanel * panel)
{
    do_mark_file (panel, 1);
}

/* Incremental search of a file name in the panel */
static void
do_search (WPanel * panel, int c_code)
{
    size_t l, max, buf_max;
    int i, sel;
    int wrapped = 0;
    char *act;

    l = strlen (panel->search_buffer);
    if (c_code == KEY_BACKSPACE)
    {
        if (l != 0)
        {
            act = panel->search_buffer + l;
            str_prev_noncomb_char (&act, panel->search_buffer);
            act[0] = '\0';
        }
        panel->search_chpoint = 0;
    }
    else
    {
        if (c_code && (gsize) panel->search_chpoint < sizeof (panel->search_char))
        {
            panel->search_char[panel->search_chpoint] = c_code;
            panel->search_chpoint++;
        }

        if (panel->search_chpoint > 0)
        {
            switch (str_is_valid_char (panel->search_char, panel->search_chpoint))
            {
            case -2:
                return;
            case -1:
                panel->search_chpoint = 0;
                return;
            default:
                if (l + panel->search_chpoint < sizeof (panel->search_buffer))
                {
                    memcpy (panel->search_buffer + l, panel->search_char, panel->search_chpoint);
                    l += panel->search_chpoint;
                    (panel->search_buffer + l)[0] = '\0';
                    panel->search_chpoint = 0;
                }
            }
        }
    }

    buf_max = panel->case_sensitive ?
        str_prefix (panel->search_buffer, panel->search_buffer) :
        str_caseprefix (panel->search_buffer, panel->search_buffer);
    max = 0;
    sel = panel->selected;
    for (i = panel->selected; !wrapped || i != panel->selected; i++)
    {
        if (i >= panel->count)
        {
            i = 0;
            if (wrapped)
                break;
            wrapped = 1;
        }
        l = panel->case_sensitive ?
            str_prefix (panel->dir.list[i].fname, panel->search_buffer) :
            str_caseprefix (panel->dir.list[i].fname, panel->search_buffer);
        if (l > max)
        {
            max = l;
            sel = i;
            if (max == buf_max)
                break;
        }
    }

    unselect_item (panel);
    panel->selected = sel;
    select_item (panel);

    act = panel->search_buffer + strlen (panel->search_buffer);
    while (max < buf_max)
    {
        str_prev_char_safe (&act);
        act[0] = '\0';
        buf_max = panel->case_sensitive ?
            str_prefix (panel->search_buffer, panel->search_buffer) :
            str_caseprefix (panel->search_buffer, panel->search_buffer);
    }

    paint_panel (panel);
}

static void
start_search (WPanel * panel)
{
    if (panel->searching)
    {
        if (panel->selected + 1 == panel->count)
            panel->selected = 0;
        else
            move_down (panel);
        do_search (panel, 0);
    }
    else
    {
        panel->searching = 1;
        panel->search_buffer[0] = '\0';
        panel->search_char[0] = '\0';
        panel->search_chpoint = 0;
        display_mini_info (panel);
        mc_refresh ();
    }
}

/* Return 1 if the Enter key has been processed, 0 otherwise */
static int
do_enter_on_file_entry (file_entry * fe)
{
    char *full_name;

    /*
     * Directory or link to directory - change directory.
     * Try the same for the entries on which mc_lstat() has failed.
     */
    if (S_ISDIR (fe->st.st_mode) || link_isdir (fe) || (fe->st.st_mode == 0))
    {
        if (!do_cd (fe->fname, cd_exact))
            message (D_ERROR, MSG_ERROR, _("Cannot change directory"));
        return 1;
    }

    /* Try associated command */
    if (regex_command (fe->fname, "Open", 0) != 0)
        return 1;

    /* Check if the file is executable */
    full_name = concat_dir_and_file (current_panel->cwd, fe->fname);
    if (!is_exe (fe->st.st_mode) || !if_link_is_exe (full_name, fe))
    {
        g_free (full_name);
        return 0;
    }
    g_free (full_name);

    if (confirm_execute)
    {
        if (query_dialog
            (_(" The Midnight Commander "),
             _(" Do you really want to execute? "), D_NORMAL, 2, _("&Yes"), _("&No")) != 0)
            return 1;
    }
#ifdef ENABLE_VFS
    if (!vfs_current_is_local ())
    {
        char *tmp;
        int ret;

        tmp = concat_dir_and_file (vfs_get_current_dir (), fe->fname);
        ret = mc_setctl (tmp, VFS_SETCTL_RUN, NULL);
        g_free (tmp);
        /* We took action only if the dialog was shown or the execution
         * was successful */
        return confirm_execute || (ret == 0);
    }
#endif

    {
        char *tmp = name_quote (fe->fname, 0);
        char *cmd = g_strconcat (".", PATH_SEP_STR, tmp, (char *) NULL);
        g_free (tmp);
        shell_execute (cmd, 0);
        g_free (cmd);
    }

    return 1;
}

static int
do_enter (WPanel * panel)
{
    return do_enter_on_file_entry (selection (panel));
}

static void
chdir_other_panel (WPanel * panel)
{
    char *new_dir;
    char *sel_entry = NULL;

    if (get_other_type () != view_listing)
    {
        set_display_type (get_other_index (), view_listing);
    }

    if (!S_ISDIR (panel->dir.list[panel->selected].st.st_mode))
    {
        new_dir = concat_dir_and_file (panel->cwd, "..");
        sel_entry = strrchr (panel->cwd, PATH_SEP);
    }
    else
        new_dir = concat_dir_and_file (panel->cwd, panel->dir.list[panel->selected].fname);

    change_panel ();
    do_cd (new_dir, cd_exact);
    if (sel_entry)
        try_to_select (current_panel, sel_entry);
    change_panel ();

    move_down (panel);

    g_free (new_dir);
}

/*
 * Make the current directory of the current panel also the current
 * directory of the other panel.  Put the other panel to the listing
 * mode if needed.  If the current panel is panelized, the other panel
 * doesn't become panelized.
 */
static void
sync_other_panel (WPanel * panel)
{
    if (get_other_type () != view_listing)
    {
        set_display_type (get_other_index (), view_listing);
    }

    do_panel_cd (other_panel, current_panel->cwd, cd_exact);

    /* try to select current filename on the other panel */
    if (!panel->is_panelized)
    {
        try_to_select (other_panel, selection (panel)->fname);
    }
}

static void
chdir_to_readlink (WPanel * panel)
{
    char *new_dir;

    if (get_other_type () != view_listing)
        return;

    if (S_ISLNK (panel->dir.list[panel->selected].st.st_mode))
    {
        char buffer[MC_MAXPATHLEN], *p;
        int i;
        struct stat st;

        i = readlink (selection (panel)->fname, buffer, MC_MAXPATHLEN - 1);
        if (i < 0)
            return;
        if (mc_stat (selection (panel)->fname, &st) < 0)
            return;
        buffer[i] = 0;
        if (!S_ISDIR (st.st_mode))
        {
            p = strrchr (buffer, PATH_SEP);
            if (p && !p[1])
            {
                *p = 0;
                p = strrchr (buffer, PATH_SEP);
            }
            if (!p)
                return;
            p[1] = 0;
        }
        if (*buffer == PATH_SEP)
            new_dir = g_strdup (buffer);
        else
            new_dir = concat_dir_and_file (panel->cwd, buffer);

        change_panel ();
        do_cd (new_dir, cd_exact);
        change_panel ();

        move_down (panel);

        g_free (new_dir);
    }
}

static gsize
panel_get_format_field_count (WPanel * panel)
{
    format_e *format;
    gsize lc_index;
    for (lc_index = 0, format = panel->format; format != NULL; format = format->next, lc_index++);
    return lc_index;
}

/*
   function return 0 if not found and REAL_INDEX+1 if found
 */
static gsize
panel_get_format_field_index_by_name (WPanel * panel, const char *name)
{
    format_e *format;
    gsize lc_index;

    for (lc_index = 1, format = panel->format;
         !(format == NULL || strcmp (format->title, name) == 0); format = format->next, lc_index++);
    if (format == NULL)
        lc_index = 0;

    return lc_index;
}

static format_e *
panel_get_format_field_by_index (WPanel * panel, gsize lc_index)
{
    format_e *format;
    for (format = panel->format;
         !(format == NULL || lc_index == 0); format = format->next, lc_index--);
    return format;
}

static const panel_field_t *
panel_get_sortable_field_by_format (WPanel * panel, gsize lc_index)
{
    const panel_field_t *pfield;
    format_e *format;

    format = panel_get_format_field_by_index (panel, lc_index);
    if (format == NULL)
        return NULL;
    pfield = panel_get_field_by_title (format->title);
    if (pfield == NULL)
        return NULL;
    if (pfield->sort_routine == NULL)
        return NULL;
    return pfield;
}

static void
panel_toggle_sort_order_prev (WPanel * panel)
{
    gsize lc_index, i;
    gchar *title;

    const panel_field_t *pfield = NULL;

    title = panel_get_title_without_hotkey (panel->current_sort_field->title_hotkey);
    lc_index = panel_get_format_field_index_by_name (panel, title);
    g_free (title);

    if (lc_index > 1)
    {
        /* search for prev sortable column in panel format */
        for (i = lc_index - 1;
             i != 0 && (pfield = panel_get_sortable_field_by_format (panel, i - 1)) == NULL; i--);
    }

    if (pfield == NULL)
    {
        /* Sortable field not found. Try to search in each array */
        for (i = panel_get_format_field_count (panel);
             i != 0 && (pfield = panel_get_sortable_field_by_format (panel, i - 1)) == NULL; i--);
    }
    if (pfield == NULL)
        return;
    panel->current_sort_field = pfield;
    panel_set_sort_order (panel, panel->current_sort_field);
}


static void
panel_toggle_sort_order_next (WPanel * panel)
{
    gsize lc_index, i;
    const panel_field_t *pfield = NULL;
    gsize format_field_count = panel_get_format_field_count (panel);
    gchar *title;

    title = panel_get_title_without_hotkey (panel->current_sort_field->title_hotkey);
    lc_index = panel_get_format_field_index_by_name (panel, title);
    g_free (title);

    if (lc_index != 0 && lc_index != format_field_count)
    {
        /* search for prev sortable column in panel format */
        for (i = lc_index;
             i != format_field_count
             && (pfield = panel_get_sortable_field_by_format (panel, i)) == NULL; i++);
    }

    if (pfield == NULL)
    {
        /* Sortable field not found. Try to search in each array */
        for (i = 0;
             i != format_field_count
             && (pfield = panel_get_sortable_field_by_format (panel, i)) == NULL; i++);
    }
    if (pfield == NULL)
        return;
    panel->current_sort_field = pfield;
    panel_set_sort_order (panel, panel->current_sort_field);
}

static void
panel_select_sort_order (WPanel * panel)
{
    const panel_field_t *sort_order;
    sort_order = sort_box (panel->current_sort_field, &panel->reverse,
                           &panel->case_sensitive, &panel->exec_first);
    if (sort_order == NULL)
        return;
    panel->current_sort_field = sort_order;
    panel_set_sort_order (panel, panel->current_sort_field);

}

static void
panel_set_sort_type_by_id (WPanel * panel, const char *name)
{
    const panel_field_t *sort_order;

    if (strcmp (panel->current_sort_field->id, name) != 0)
    {
        sort_order = panel_get_field_by_id (name);
        if (sort_order == NULL)
            return;
        panel->current_sort_field = sort_order;
    }
    else
    {
        panel->reverse = !panel->reverse;
    }
    panel_set_sort_order (panel, panel->current_sort_field);
}

typedef void (*panel_key_callback) (WPanel *);

static void
cmd_do_enter (WPanel * wp)
{
    (void) do_enter (wp);
}
static void
cmd_view_simple (WPanel * wp)
{
    (void) wp;
    view_simple_cmd ();
}
static void
cmd_edit_new (WPanel * wp)
{
    (void) wp;
    edit_cmd_new ();
}
static void
cmd_copy_local (WPanel * wp)
{
    (void) wp;
    copy_cmd_local ();
}
static void
cmd_rename_local (WPanel * wp)
{
    (void) wp;
    rename_cmd_local ();
}
static void
cmd_delete_local (WPanel * wp)
{
    (void) wp;
    delete_cmd_local ();
}
static void
cmd_select (WPanel * wp)
{
    (void) wp;
    select_cmd ();
}
static void
cmd_unselect (WPanel * wp)
{
    (void) wp;
    unselect_cmd ();
}
static void
cmd_reverse_selection (WPanel * wp)
{
    (void) wp;
    reverse_selection_cmd ();
}

static cb_ret_t
panel_execute_cmd (WPanel * panel, unsigned long command)
{
    int res = MSG_HANDLED;

    switch (command)
    {
    case CK_PanelChdirOtherPanel:
        chdir_other_panel (panel);
        break;
    case CK_PanelChdirToReadlink:
        chdir_to_readlink (panel);
        break;
    case CK_PanelCmdCopyLocal:
        cmd_copy_local (panel);
        break;
    case CK_PanelCmdDeleteLocal:
        cmd_delete_local (panel);
        break;
    case CK_PanelCmdDoEnter:
        cmd_do_enter (panel);
        break;
    case CK_PanelCmdViewSimple:
        cmd_view_simple (panel);
        break;
    case CK_PanelCmdEditNew:
        cmd_edit_new (panel);
        break;
    case CK_PanelCmdRenameLocal:
        cmd_rename_local (panel);
        break;
    case CK_PanelCmdReverseSelection:
        cmd_reverse_selection (panel);
        break;
    case CK_PanelCmdSelect:
        cmd_select (panel);
        break;
    case CK_PanelCmdUnselect:
        cmd_unselect (panel);
        break;
    case CK_PanelNextPage:
        next_page (panel);
        break;
    case CK_PanelPrevPage:
        prev_page (panel);
        break;
    case CK_PanelCtrlNextPage:
        ctrl_next_page (panel);
        break;
    case CK_PanelCtrlPrevPage:
        ctrl_prev_page (panel);
        break;
    case CK_PanelDirectoryHistoryList:
        directory_history_list (panel);
        break;
    case CK_PanelDirectoryHistoryNext:
        directory_history_next (panel);
        break;
    case CK_PanelDirectoryHistoryPrev:
        directory_history_prev (panel);
        break;
    case CK_PanelGotoBottomFile:
        goto_bottom_file (panel);
        break;
    case CK_PanelGotoMiddleFile:
        goto_middle_file (panel);
        break;
    case CK_PanelGotoTopFile:
        goto_top_file (panel);
        break;
    case CK_PanelMarkFile:
        mark_file (panel);
        break;
    case CK_PanelMoveUp:
        move_up (panel);
        break;
    case CK_PanelMoveDown:
        move_down (panel);
        break;
    case CK_PanelMoveLeft:
        res = move_left (panel);
        break;
    case CK_PanelMoveRight:
        res = move_right (panel);
        break;
    case CK_PanelMoveEnd:
        move_end (panel);
        break;
    case CK_PanelMoveHome:
        move_home (panel);
        break;
    case CK_PanelSetPanelEncoding:
        set_panel_encoding (panel);
        break;
    case CK_PanelStartSearch:
        start_search (panel);
        break;
    case CK_PanelSyncOtherPanel:
        sync_other_panel (panel);
        break;
    case CK_PanelSelectSortOrder:
        panel_select_sort_order (panel);
        break;
    case CK_PanelToggleSortOrderPrev:
        panel_toggle_sort_order_prev (panel);
        break;
    case CK_PanelToggleSortOrderNext:
        panel_toggle_sort_order_next (panel);
        break;
    case CK_PanelReverseSort:
        panel->reverse = !panel->reverse;
        panel_set_sort_order (panel, panel->current_sort_field);
        break;
    case CK_PanelSortOrderByName:
        panel_set_sort_type_by_id (panel, "name");
        break;
    case CK_PanelSortOrderByExt:
        panel_set_sort_type_by_id (panel, "extension");
        break;
    case CK_PanelSortOrderBySize:
        panel_set_sort_type_by_id (panel, "size");
        break;
    case CK_PanelSortOrderByMTime:
        panel_set_sort_type_by_id (panel, "mtime");
        break;
    }
    return res;
}

static cb_ret_t
panel_key (WPanel * panel, int key)
{
    size_t i;
    unsigned long res, command;

    for (i = 0; panel_map[i].key != 0; i++)
    {
        if (key == panel_map[i].key)
        {
            int old_searching = panel->searching;

            if (panel_map[i].command != CK_PanelStartSearch)
                panel->searching = 0;

            command = panel_map[i].command;
            res = panel_execute_cmd (panel, command);

            if (res == MSG_NOT_HANDLED)
                return res;

            if (panel->searching != old_searching)
                display_mini_info (panel);
            return MSG_HANDLED;
        }
    }

    if (torben_fj_mode && key == ALT ('h'))
    {
        goto_middle_file (panel);
        return MSG_HANDLED;
    }

    if (is_abort_char (key))
    {
        panel->searching = 0;
        display_mini_info (panel);
        return MSG_HANDLED;
    }

    /* Do not eat characters not meant for the panel below ' ' (e.g. C-l). */
    if ((key >= ' ' && key <= 255) || key == KEY_BACKSPACE)
    {
        if (panel->searching)
        {
            do_search (panel, key);
            return MSG_HANDLED;
        }

        if (!command_prompt)
        {
            start_search (panel);
            do_search (panel, key);
            return MSG_HANDLED;
        }
    }

    return MSG_NOT_HANDLED;
}

static cb_ret_t
panel_callback (Widget * w, widget_msg_t msg, int parm)
{
    WPanel *panel = (WPanel *) w;
    WButtonBar *bb;

    switch (msg)
    {
    case WIDGET_DRAW:
        paint_panel (panel);
        return MSG_HANDLED;

    case WIDGET_FOCUS:
        current_panel = panel;
        panel->active = 1;
        if (mc_chdir (panel->cwd) != 0)
        {
            char *cwd = strip_password (g_strdup (panel->cwd), 1);
            message (D_ERROR, MSG_ERROR, _(" Cannot chdir to \"%s\" \n %s "),
                     cwd, unix_error_string (errno));
            g_free (cwd);
        }
        else
            subshell_chdir (panel->cwd);

        update_xterm_title_path ();
        select_item (panel);
        show_dir (panel);
        paint_dir (panel);
        panel->dirty = 0;

        bb = find_buttonbar (panel->widget.parent);
        midnight_set_buttonbar (bb);
        buttonbar_redraw (bb);
        return MSG_HANDLED;

    case WIDGET_UNFOCUS:
        /* Janne: look at this for the multiple panel options */
        if (panel->searching)
        {
            panel->searching = 0;
            display_mini_info (panel);
        }
        panel->active = 0;
        show_dir (panel);
        unselect_item (panel);
        return MSG_HANDLED;

    case WIDGET_KEY:
        return panel_key (panel, parm);

    case WIDGET_DESTROY:
        panel_destroy (panel);
        free_my_statfs ();
        return MSG_HANDLED;

    default:
        return default_proc (msg, parm);
    }
}

void
file_mark (WPanel * panel, int lc_index, int val)
{
    if (panel->dir.list[lc_index].f.marked != val)
    {
        panel->dir.list[lc_index].f.marked = val;
        panel->dirty = 1;
    }
}

/*                                     */
/* Panel mouse events support routines */
/*                                     */
static int mouse_marking = 0;

static void
mouse_toggle_mark (WPanel * panel)
{
    do_mark_file (panel, 0);
    mouse_marking = selection (panel)->f.marked;
}

static void
mouse_set_mark (WPanel * panel)
{
    if (mouse_marking && !(selection (panel)->f.marked))
        do_mark_file (panel, 0);
    else if (!mouse_marking && (selection (panel)->f.marked))
        do_mark_file (panel, 0);
}

static int
mark_if_marking (WPanel * panel, Gpm_Event * event)
{
    if (event->buttons & GPM_B_RIGHT)
    {
        if (event->type & GPM_DOWN)
            mouse_toggle_mark (panel);
        else
            mouse_set_mark (panel);
        return 1;
    }
    return 0;
}

/* Determine which column was clicked, and sort the panel on
 * that column, or reverse sort on that column if already
 * sorted on that column.
 */
static void
mouse_sort_col (Gpm_Event * event, WPanel * panel)
{
    int i;
    const char *lc_sort_name = NULL;
    panel_field_t *col_sort_format = NULL;
    format_e *format;
    gchar *title;

    for (i = 0, format = panel->format; format != NULL; format = format->next)
    {
        i += format->field_len;
        if (event->x < i + 1)
        {
            /* found column */
            lc_sort_name = format->title;
            break;
        }
    }

    if (lc_sort_name == NULL)
        return;

    for (i = 0; panel_fields[i].id != NULL; i++)
    {
        title = panel_get_title_without_hotkey (panel_fields[i].title_hotkey);
        if (!strcmp (lc_sort_name, title) && panel_fields[i].sort_routine)
        {
            col_sort_format = &panel_fields[i];
            g_free (title);
            break;
        }
        g_free (title);
    }

    if (!col_sort_format)
        return;

    if (panel->current_sort_field == col_sort_format)
    {
        /* reverse the sort if clicked column is already the sorted column */
        panel->reverse = !panel->reverse;
    }
    else
    {
        /* new sort is forced to be ascending */
        panel->reverse = 0;
    }
    panel_set_sort_order (panel, col_sort_format);
}


/*
 * Mouse callback of the panel minus repainting.
 * If the event is redirected to the menu, *redir is set to TRUE.
 */
static int
do_panel_event (Gpm_Event * event, WPanel * panel, gboolean *redir)
{
    const int lines = llines (panel);
    const gboolean is_active = dlg_widget_active (panel);
    const gboolean mouse_down = (event->type & GPM_DOWN) != 0;

    *redir = FALSE;

    /* 1st line */
    if (mouse_down && event->y == 1)
    {
        /* "<" button */
        if (event->x == 2)
        {
            directory_history_prev (panel);
            return MOU_NORMAL;
        }

        /* "." button show/hide hidden files */
        if (event->x == panel->widget.cols - 5)
        {
            toggle_show_hidden ();
            repaint_screen ();
            return MOU_NORMAL;
        }

        /* ">" button */
        if (event->x == panel->widget.cols - 1)
        {
            directory_history_next (panel);
            return MOU_NORMAL;
        }

        /* "^" button */
        if (event->x >= panel->widget.cols - 4 && event->x <= panel->widget.cols - 2)
        {
            directory_history_list (panel);
            return MOU_NORMAL;
        }

        /* rest of the upper frame, the menu is invisible - call menu */
        if (!menubar_visible)
        {
            *redir = TRUE;
            event->x += panel->widget.x;
            return the_menubar->widget.mouse (event, the_menubar);
        }

        /* no other events on 1st line */
        return MOU_NORMAL;
    }

    /* sort on clicked column; don't handle wheel events */
    if (mouse_down && (event->buttons & (GPM_B_UP | GPM_B_DOWN)) == 0 && event->y == 2)
    {
        mouse_sort_col (event, panel);
        return MOU_NORMAL;
    }

    /* Mouse wheel events */
    if (mouse_down && (event->buttons & GPM_B_UP))
    {
        if (is_active)
        {
            if (mouse_move_pages && (panel->top_file > 0))
                prev_page (panel);
            else                /* We are in first page */
                move_up (panel);
        }
        return MOU_NORMAL;
    }

    if (mouse_down && (event->buttons & GPM_B_DOWN))
    {
        if (is_active)
        {
            if (mouse_move_pages
                    && (panel->top_file + ITEMS (panel) < panel->count))
                next_page (panel);
            else                /* We are in last page */
                move_down (panel);
        }
        return MOU_NORMAL;
    }

    event->y -= 2;
    if ((event->type & (GPM_DOWN | GPM_DRAG)))
    {
        int my_index;

        if (!is_active)
            change_panel ();

        if (event->y > lines)
            return MOU_NORMAL;

        if (panel->top_file + event->y > panel->count)
            my_index = panel->count - 1;
        else
        {
            my_index = panel->top_file + event->y - 1;
            if (panel->split && (event->x > ((panel->widget.cols - 2) / 2)))
                my_index += llines (panel);

            if (my_index >= panel->count)
                my_index = panel->count - 1;
        }

        if (my_index != panel->selected)
        {
            unselect_item (panel);
            panel->selected = my_index;
            select_item (panel);
        }

        /* This one is new */
        mark_if_marking (panel, event);
    }
    else if ((event->type & (GPM_UP | GPM_DOUBLE)) == (GPM_UP | GPM_DOUBLE))
    {
        if (event->y > 0 && event->y <= lines)
            do_enter (panel);
    }
    return MOU_NORMAL;
}

/* Mouse callback of the panel */
static int
panel_event (Gpm_Event * event, void *data)
{
    WPanel *panel = data;
    int ret;
    gboolean redir;

    ret = do_panel_event (event, panel, &redir);
    if (!redir)
        paint_panel (panel);

    return ret;
}

void
panel_re_sort (WPanel * panel)
{
    char *filename;
    int i;

    if (panel == NULL)
        return;

    filename = g_strdup (selection (panel)->fname);
    unselect_item (panel);
    do_sort (&panel->dir, panel->current_sort_field->sort_routine, panel->count - 1, panel->reverse,
             panel->case_sensitive, panel->exec_first);
    panel->selected = -1;
    for (i = panel->count; i; i--)
    {
        if (!strcmp (panel->dir.list[i - 1].fname, filename))
        {
            panel->selected = i - 1;
            break;
        }
    }
    g_free (filename);
    panel->top_file = panel->selected - ITEMS (panel) / 2;
    if (panel->top_file < 0)
        panel->top_file = 0;
    select_item (panel);
    panel->dirty = 1;
}

void
panel_set_sort_order (WPanel * panel, const panel_field_t * sort_order)
{
    if (sort_order == 0)
        return;

    panel->current_sort_field = sort_order;

    /* The directory is already sorted, we have to load the unsorted stuff */
    if (sort_order->sort_routine == (sortfn *) unsorted)
    {
        char *current_file;

        current_file = g_strdup (panel->dir.list[panel->selected].fname);
        panel_reload (panel);
        try_to_select (panel, current_file);
        g_free (current_file);
    }
    panel_re_sort (panel);
}

void
set_panel_encoding (WPanel * panel)
{
    const char *encoding = NULL;
    char *cd_path;
#ifdef HAVE_CHARSET
    const char *errmsg;
    int r;

    r = select_charset (-1, -1, source_codepage, FALSE);

    if (r == SELECT_CHARSET_CANCEL)
        return;                 /* Cancel */

    if (r == SELECT_CHARSET_NO_TRANSLATE)
    {
        /* No translation */
        errmsg = init_translation_table (display_codepage, display_codepage);
        cd_path = remove_encoding_from_path (panel->cwd);
        do_panel_cd (panel, cd_path, 0);
        g_free (cd_path);
        return;
    }

    source_codepage = r;

    errmsg = init_translation_table (source_codepage, display_codepage);
    if (errmsg)
    {
        message (D_ERROR, MSG_ERROR, "%s", errmsg);
        return;
    }

    encoding = get_codepage_id (source_codepage);
#endif
    if (encoding != NULL)
    {
        cd_path = add_encoding_to_path (panel->cwd, encoding);
        if (!do_panel_cd (panel, cd_path, 0))
            message (D_ERROR, MSG_ERROR, _(" Cannot chdir to %s "), cd_path);
        g_free (cd_path);
    }
}

static void
reload_panelized (WPanel * panel)
{
    int i, j;
    dir_list *list = &panel->dir;

    if (panel != current_panel)
        mc_chdir (panel->cwd);

    for (i = 0, j = 0; i < panel->count; i++)
    {
        if (list->list[i].f.marked)
        {
            /* Unmark the file in advance. In case the following mc_lstat
             * fails we are done, else we have to mark the file again
             * (Note: do_file_mark depends on a valid "list->list [i].buf").
             * IMO that's the best way to update the panel's summary status
             * -- Norbert
             */
            do_file_mark (panel, i, 0);
        }
        if (mc_lstat (list->list[i].fname, &list->list[i].st))
        {
            g_free (list->list[i].fname);
            continue;
        }
        if (list->list[i].f.marked)
            do_file_mark (panel, i, 1);
        if (j != i)
            list->list[j] = list->list[i];
        j++;
    }
    if (j == 0)
        panel->count = set_zero_dir (list) ? 1 : 0;
    else
        panel->count = j;

    if (panel != current_panel)
        mc_chdir (current_panel->cwd);
}

static void
update_one_panel_widget (WPanel * panel, int force_update, const char *current_file)
{
    int free_pointer;
    char *my_current_file = NULL;

    if (force_update & UP_RELOAD)
    {
        panel->is_panelized = 0;
        mc_setctl (panel->cwd, VFS_SETCTL_FLUSH, 0);
        memset (&(panel->dir_stat), 0, sizeof (panel->dir_stat));
    }

    /* If current_file == -1 (an invalid pointer) then preserve selection */
    if (current_file == UP_KEEPSEL)
    {
        free_pointer = 1;
        my_current_file = g_strdup (panel->dir.list[panel->selected].fname);
        current_file = my_current_file;
    }
    else
        free_pointer = 0;

    if (panel->is_panelized)
        reload_panelized (panel);
    else
        panel_reload (panel);

    try_to_select (panel, current_file);
    panel->dirty = 1;

    if (free_pointer)
        g_free (my_current_file);
}

static void
update_one_panel (int which, int force_update, const char *current_file)
{
    if (get_display_type (which) == view_listing)
    {
        WPanel *panel;
        panel = (WPanel *) get_panel_widget (which);
        update_one_panel_widget (panel, force_update, current_file);
    }
}

/* This routine reloads the directory in both panels. It tries to
 * select current_file in current_panel and other_file in other_panel.
 * If current_file == -1 then it automatically sets current_file and
 * other_file to the currently selected files in the panels.
 *
 * if force_update has the UP_ONLY_CURRENT bit toggled on, then it
 * will not reload the other panel.
 */
void
update_panels (int force_update, const char *current_file)
{
    int reload_other = !(force_update & UP_ONLY_CURRENT);
    WPanel *panel;

    update_one_panel (get_current_index (), force_update, current_file);
    if (reload_other)
        update_one_panel (get_other_index (), force_update, UP_KEEPSEL);

    if (get_current_type () == view_listing)
        panel = (WPanel *) get_panel_widget (get_current_index ());
    else
        panel = (WPanel *) get_panel_widget (get_other_index ());

    mc_chdir (panel->cwd);
}

gsize
panel_get_num_of_sortable_fields (void)
{
    gsize ret = 0, lc_index;

    for (lc_index = 0; panel_fields[lc_index].id != NULL; lc_index++)
        if (panel_fields[lc_index].is_user_choice)
            ret++;
    return ret;
}


const char **
panel_get_sortable_fields (gsize * array_size)
{
    char **ret;
    gsize lc_index, i;

    lc_index = panel_get_num_of_sortable_fields ();

    ret = g_try_new0 (char *, lc_index + 1);
    if (ret == NULL)
        return NULL;

    if (array_size != NULL)
        *array_size = lc_index;

    lc_index = 0;

    for (i = 0; panel_fields[i].id != NULL; i++)
        if (panel_fields[i].is_user_choice)
            ret[lc_index++] = g_strdup (_(panel_fields[i].title_hotkey));
    return (const char **) ret;
}

const panel_field_t *
panel_get_field_by_id (const char *name)
{
    gsize lc_index;
    for (lc_index = 0; panel_fields[lc_index].id != NULL; lc_index++)
        if (panel_fields[lc_index].id != NULL && strcmp (name, panel_fields[lc_index].id) == 0)
            return &panel_fields[lc_index];
    return NULL;
}

const panel_field_t *
panel_get_field_by_title_hotkey (const char *name)
{
    gsize lc_index;
    for (lc_index = 0; panel_fields[lc_index].id != NULL; lc_index++)
        if (panel_fields[lc_index].title_hotkey != NULL &&
            strcmp (name, _(panel_fields[lc_index].title_hotkey)) == 0)
            return &panel_fields[lc_index];
    return NULL;
}

const panel_field_t *
panel_get_field_by_title (const char *name)
{
    gsize lc_index;
    gchar *title = NULL;

    for (lc_index = 0; panel_fields[lc_index].id != NULL; lc_index++)
    {
        title = panel_get_title_without_hotkey (panel_fields[lc_index].title_hotkey);
        if (panel_fields[lc_index].title_hotkey != NULL && strcmp (name, title) == 0)
        {
            g_free (title);
            return &panel_fields[lc_index];
        }
    }
    g_free (title);
    return NULL;
}

gsize
panel_get_num_of_user_possible_fields (void)
{
    gsize ret = 0, lc_index;

    for (lc_index = 0; panel_fields[lc_index].id != NULL; lc_index++)
        if (panel_fields[lc_index].use_in_user_format)
            ret++;
    return ret;
}

const char **
panel_get_user_possible_fields (gsize * array_size)
{
    char **ret;
    gsize lc_index, i;

    lc_index = panel_get_num_of_user_possible_fields ();

    ret = g_try_new0 (char *, lc_index + 1);
    if (ret == NULL)
        return NULL;

    if (array_size != NULL)
        *array_size = lc_index;

    lc_index = 0;

    for (i = 0; panel_fields[i].id != NULL; i++)
        if (panel_fields[i].use_in_user_format)
            ret[lc_index++] = g_strdup (_(panel_fields[i].title_hotkey));
    return (const char **) ret;
}

void
panel_init (void)
{
    panel_sort_up_sign = mc_skin_get ("widget-common", "sort-sign-up", "'");
    panel_sort_down_sign = mc_skin_get ("widget-common", "sort-sign-down", ",");

    panel_hiddenfiles_sign_show = mc_skin_get ("widget-panel", "hiddenfiles-sign-show", ".");
    panel_hiddenfiles_sign_hide = mc_skin_get ("widget-panel", "hiddenfiles-sign-hide", ".");
    panel_history_prev_item_sign = mc_skin_get ("widget-panel", "history-prev-item-sign", "<");
    panel_history_next_item_sign = mc_skin_get ("widget-panel", "history-next-item-sign", ">");
    panel_history_show_list_sign = mc_skin_get ("widget-panel", "history-show-list-sign", "^");

}

void
panel_deinit (void)
{
    g_free (panel_sort_up_sign);
    g_free (panel_sort_down_sign);

    g_free (panel_hiddenfiles_sign_show);
    g_free (panel_hiddenfiles_sign_hide);
    g_free (panel_history_prev_item_sign);
    g_free (panel_history_next_item_sign);
    g_free (panel_history_show_list_sign);

}