/* fileset_dlg.c
 * Routines for the file set dialog
 *
 * $Id: fileset_dlg.c 19080 2006-08-29 21:09:32Z ulfl $
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * 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.
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <string.h>

#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif

#include <gtk/gtk.h>

#include "globals.h"


#include "compat_macros.h"
#include "simple_dialog.h"

#include "gui_utils.h"
#include "dlg_utils.h"

#include "main.h"
#include "menu.h"
#include "help_dlg.h"

#include <epan/filesystem.h>

#include "fileset.h"
#include "fileset_dlg.h"



/*
 * Keep a static pointer to the current "File Set" window, if
 * any, so that if somebody tries to do "File Set" while there's
 * already a "File Set" window up, we just pop up the existing
 * one, rather than creating a new one.
 */
static GtkWidget *fs_w;



/* various widget related global data */
int           row;
GtkWidget     *fs_tb;
GtkWidget     *fs_sw;
GtkTooltips   *tooltips;
GtkWidget     *fs_dir_lb;
GtkWidget     *fs_first_rb;
GtkWidget     *fs_tb_vb;



/* open the file corresponding to the given fileset entry */
static void
fs_open_entry(fileset_entry *entry)
{
    char            *fname;
    int             err;


    /* make a copy of the filename (cf_close will indirectly destroy it right now) */
    fname = g_strdup(entry->fullname);

    /* close the old and open the new file */
    cf_close(&cfile);
    if (cf_open(&cfile, fname, FALSE, &err) == CF_OK) {
        cf_read(&cfile);
    }

    g_free(fname);
}


/* radio button was pressed/released */
static void
fs_rb_cb(GtkWidget *open_bt, gpointer fs_data)
{
    fileset_entry   *entry = fs_data;

    /* button release should have no effect */
    if(!gtk_toggle_button_get_active( GTK_TOGGLE_BUTTON(open_bt) )) {
        return;
    }

    fs_open_entry(entry);
}


/* the window was closed, cleanup things */
static void
fs_destroy_cb(GtkWidget *win _U_, gpointer user_data _U_)
{
    /* Note that we no longer have a "File Set" dialog box. */
    fs_w = NULL;
}


/* get creation date (converted from filename) */
/* */
static char *
fileset_dlg_name2date_dup(const char * name) {
    char        *pfx;
    char        *filename;
    int         pos;


    /* just to be sure ... */
	if(!fileset_filename_match_pattern(name)) {
		return NULL;
	}

    /* find char position behind the last underscore */
    pfx = strrchr(name, '_');
    pfx++;
    pos = pfx - name;

    /* start conversion behind that underscore */
    filename = g_strdup_printf("%c%c%c%c.%c%c.%c%c %c%c:%c%c:%c%c",
        /* year  */  name[pos]  ,  name[pos+1], name[pos+2], name[pos+3],
        /* month */  name[pos+4],  name[pos+5],
        /* day   */  name[pos+6],  name[pos+7],
        /* hour */   name[pos+8],  name[pos+9],
        /* min */    name[pos+10], name[pos+11],
        /* second */ name[pos+12], name[pos+13]);

    return filename;
}


/* this file is a part of the current file set, add it to the dialog */
void
fileset_dlg_add_file(fileset_entry *entry) {
    char *created;
    char *modified;
    char *size;
    struct tm *local;
    GtkWidget     *fs_lb;
    GtkWidget     *fs_rb;
    gchar *title;


    if (fs_w == NULL) {
        return;
    }

    created = fileset_dlg_name2date_dup(entry->name);
	if(!created) {
		/* if this file doesn't follow the file set pattern, */
		/* use the creation time of that file */
		local = localtime(&entry->ctime);
		created = g_strdup_printf("%04u.%02u.%02u %02u:%02u:%02u", 
			local->tm_year+1900, local->tm_mon+1, local->tm_mday,
			local->tm_hour, local->tm_min, local->tm_sec);
	}

    local = localtime(&entry->mtime);
    modified = g_strdup_printf("%04u.%02u.%02u %02u:%02u:%02u", 
        local->tm_year+1900, local->tm_mon+1, local->tm_mday,
        local->tm_hour, local->tm_min, local->tm_sec);
    size = g_strdup_printf("%ld Bytes", entry->size);

    fs_rb = RADIO_BUTTON_NEW_WITH_LABEL(fs_first_rb, entry->name);
    if(row == 1) {
        fs_first_rb = fs_rb;
    }
    if(entry->current) {
        gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (fs_rb), entry->current);
    }
    gtk_tooltips_set_tip(tooltips, fs_rb, "Open this capture file", NULL);
    gtk_table_attach_defaults(GTK_TABLE(fs_tb), fs_rb, 0, 1, row, row+1);
    SIGNAL_CONNECT(fs_rb, "toggled", fs_rb_cb, entry);
    gtk_widget_show(fs_rb);

    fs_lb = gtk_label_new(created);
    gtk_table_attach_defaults(GTK_TABLE(fs_tb), fs_lb, 1, 2, row, row+1);
    gtk_widget_set_sensitive(fs_lb, entry->current);
    gtk_widget_show(fs_lb);

    fs_lb = gtk_label_new(modified);
    gtk_table_attach_defaults(GTK_TABLE(fs_tb), fs_lb, 2, 3, row, row+1);
    gtk_widget_set_sensitive(fs_lb, entry->current);
    gtk_widget_show(fs_lb);

    fs_lb = gtk_label_new(size);
    gtk_table_attach_defaults(GTK_TABLE(fs_tb), fs_lb, 3, 4, row, row+1);
    gtk_widget_set_sensitive(fs_lb, entry->current);
    gtk_widget_show(fs_lb);

    title = g_strdup_printf("Wireshark: %u File%s in Set", row, plurality(row, "", "s"));
    gtk_window_set_title(GTK_WINDOW(fs_w), title);
    g_free(title);

    title = g_strdup_printf("... in directory: %s", fileset_get_dirname());
    gtk_label_set(GTK_LABEL(fs_dir_lb), title);
    g_free(title);

    gtk_widget_show_all(fs_tb);

    /* resize the table until we use 18 rows (fits well into 800*600), if it's bigger use a scrollbar */
    /* XXX - I didn't found a way to automatically shrink the table size again */
    if(row <= 18) {
      GtkRequisition requisition;

      gtk_widget_size_request(fs_tb, &requisition);
      WIDGET_SET_SIZE(GTK_WINDOW(fs_sw), -1, requisition.height);
      gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(fs_sw), GTK_POLICY_NEVER, GTK_POLICY_NEVER);
    }
    
    if(row == 18) {
      gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(fs_sw), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
    }
    
    row++;

    g_free(created);
    g_free(modified);
    g_free(size);
}


/* init the fileset table */
static void
fileset_init_table(GtkWidget *parent)
{
  GtkWidget     *fs_lb;

  
  fs_tb = gtk_table_new(6,1, FALSE);
  gtk_table_set_row_spacings(GTK_TABLE(fs_tb), 1);
  gtk_table_set_col_spacings(GTK_TABLE(fs_tb), 12);
  gtk_container_add(GTK_CONTAINER(parent), fs_tb);

  row = 0;
  fs_first_rb = NULL;

  fs_lb = gtk_label_new("Filename");
  gtk_table_attach(GTK_TABLE(fs_tb), fs_lb, 0, 1, row, row+1, GTK_EXPAND|GTK_FILL, 0, 0,0);

  fs_lb = gtk_label_new("Created");
  gtk_table_attach(GTK_TABLE(fs_tb), fs_lb, 1, 2, row, row+1, GTK_EXPAND|GTK_FILL, 0, 0,0);

  fs_lb = gtk_label_new("Last Modified");
  gtk_table_attach(GTK_TABLE(fs_tb), fs_lb, 2, 3, row, row+1, GTK_EXPAND|GTK_FILL, 0, 0,0);

  fs_lb = gtk_label_new("Size");
  gtk_table_attach(GTK_TABLE(fs_tb), fs_lb, 3, 4, row, row+1, GTK_EXPAND|GTK_FILL, 0, 0,0);

  gtk_widget_hide(fs_tb);

  gtk_window_set_title(GTK_WINDOW(fs_w), "Wireshark: 0 Files in Set");

  gtk_label_set(GTK_LABEL(fs_dir_lb), "No capture file loaded!");

  row++;
}


/* open the fileset dialog */
void
fileset_cb(GtkWidget *w _U_, gpointer d _U_)
{
  GtkWidget     *main_vb, *bbox, *close_bt, *help_bt;
#if GTK_MAJOR_VERSION < 2
  GtkAccelGroup *accel_group;
#endif


  if (fs_w != NULL) {
    /* There's already a "File Set" dialog box; reactivate it. */
    reactivate_window(fs_w);
    return;
  }

  fs_w = window_new(GTK_WINDOW_TOPLEVEL, "");

  tooltips = gtk_tooltips_new();

#if GTK_MAJOR_VERSION < 2
  /* Accelerator group for the accelerators (or, as they're called in
     Windows and, I think, in Motif, "mnemonics"; Alt+<key> is a mnemonic,
     Ctrl+<key> is an accelerator). */
  accel_group = gtk_accel_group_new();
  gtk_window_add_accel_group(GTK_WINDOW(fs_w), accel_group);
#endif

  main_vb = gtk_vbox_new(FALSE, 5);
  gtk_container_border_width(GTK_CONTAINER(main_vb), 5);
  gtk_container_add(GTK_CONTAINER(fs_w), main_vb);

  fs_sw = gtk_scrolled_window_new(NULL, NULL);
  gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(fs_sw), GTK_POLICY_NEVER, GTK_POLICY_NEVER);
  gtk_box_pack_start(GTK_BOX(main_vb), fs_sw, TRUE, TRUE, 0);

  /* add a dummy container, so we can replace the table later */
  fs_tb_vb = gtk_vbox_new(FALSE, 0);
  gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(fs_sw), fs_tb_vb);

  fs_dir_lb = gtk_label_new("");
  gtk_box_pack_start(GTK_BOX(main_vb), fs_dir_lb, FALSE, FALSE, 0);

  fileset_init_table(fs_tb_vb);

  /* Button row: close button */
  if(topic_available(HELP_FILESET_DIALOG)) {
    bbox = dlg_button_row_new(GTK_STOCK_CLOSE, GTK_STOCK_HELP, NULL);
  } else {
    bbox = dlg_button_row_new(GTK_STOCK_CLOSE, NULL);
  }
  gtk_box_pack_start(GTK_BOX(main_vb), bbox, FALSE, FALSE, 5);

  close_bt = OBJECT_GET_DATA(bbox, GTK_STOCK_CLOSE);
  window_set_cancel_button(fs_w, close_bt, window_cancel_button_cb);
  gtk_tooltips_set_tip(tooltips, close_bt, "Close this window.", NULL);

  if(topic_available(HELP_FILESET_DIALOG)) {
    help_bt = OBJECT_GET_DATA(bbox, GTK_STOCK_HELP);
    SIGNAL_CONNECT(help_bt, "clicked", topic_cb, HELP_FILESET_DIALOG);
  }

  gtk_widget_grab_default(close_bt);

  SIGNAL_CONNECT(fs_w, "delete_event", window_delete_event_cb, NULL);
  SIGNAL_CONNECT(fs_w, "destroy", fs_destroy_cb, NULL);

  /* init the dialog content */
  fileset_update_dlg();

  gtk_widget_show_all(fs_w);
  window_present(fs_w);
}


/* open the next file in the file set, or do nothing if already the last file */
void
fileset_next_cb(GtkWidget *w _U_, gpointer d _U_)
{
    fileset_entry   *entry;

    entry = fileset_get_next();

    if(entry) {
        fs_open_entry(entry);
    }
}


/* open the previous file in the file set, or do nothing if already the first file */
void
fileset_previous_cb(GtkWidget *w _U_, gpointer d _U_)
{
    fileset_entry   *entry;

    entry = fileset_get_previous();

    if(entry) {
        fs_open_entry(entry);
    }
}


/* a new capture file was opened, browse the dir and look for files matching the given file set */
void
fileset_file_opened(const char *fname) {
  fileset_add_dir(fname);
  if(fs_w) {
    window_present(fs_w);
  }

  /* update the menu */
  set_menus_for_file_set(TRUE /* file_set */, 
      fileset_get_previous() != NULL, fileset_get_next() != NULL );
}


/* the capture file was closed */
void
fileset_file_closed(void)
{
  if(fs_w) {
    /* reinit the table, title and alike */
    gtk_widget_ref(fs_tb_vb);
    gtk_widget_destroy(fs_tb);
    fileset_delete();
    fileset_init_table(fs_tb_vb);
    window_present(fs_w);
  } else {
    fileset_delete();
  }

  /* update the menu */
  set_menus_for_file_set(FALSE /* file_set */, 
      fileset_get_previous() != NULL, fileset_get_next() != NULL );
}