/* goto_dlg.c
 * Routines for "go to frame" window
 *
 * $Id: goto_dlg.c,v 1.1 1999/11/08 01:03:40 guy Exp $
 *
 * Ethereal - Network traffic analyzer
 * By Gerald Combs <gerald@zing.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 <gtk/gtk.h>

#include <stdlib.h>

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#ifndef __G_LIB_H__
#include <glib.h>
#endif

#include "proto.h"
#include "dfilter.h"
#include "globals.h"

#include "goto_dlg.h"
#include "prefs_dlg.h"
#include "util.h"

/* Capture callback data keys */
#define E_GOTO_FNUMBER_KEY     "goto_fnumber_te"

static void
goto_frame_ok_cb(GtkWidget *ok_bt, gpointer parent_w);

static void
goto_frame_close_cb(GtkWidget *close_bt, gpointer parent_w);

void
goto_frame_cb(GtkWidget *w, gpointer d)
{
  GtkWidget     *goto_frame_w, *main_vb, *fnumber_hb, *fnumber_lb, *fnumber_te,
                *bbox, *ok_bt, *cancel_bt;

  goto_frame_w = gtk_window_new(GTK_WINDOW_TOPLEVEL);
  gtk_window_set_title(GTK_WINDOW(goto_frame_w), "Ethereal: Go To Frame");
  
  /* Container for each row of widgets */
  main_vb = gtk_vbox_new(FALSE, 3);
  gtk_container_border_width(GTK_CONTAINER(main_vb), 5);
  gtk_container_add(GTK_CONTAINER(goto_frame_w), main_vb);
  gtk_widget_show(main_vb);
  
  /* Frame number row */
  fnumber_hb = gtk_hbox_new(FALSE, 3);
  gtk_container_add(GTK_CONTAINER(main_vb), fnumber_hb);
  gtk_widget_show(fnumber_hb);
  
  fnumber_lb = gtk_label_new("Frame number:");
  gtk_box_pack_start(GTK_BOX(fnumber_hb), fnumber_lb, FALSE, FALSE, 0);
  gtk_widget_show(fnumber_lb);
  
  fnumber_te = gtk_entry_new();
  gtk_box_pack_start(GTK_BOX(fnumber_hb), fnumber_te, FALSE, FALSE, 0);
  gtk_widget_show(fnumber_te);

  /* Button row: OK and cancel buttons */
  bbox = gtk_hbutton_box_new();
  gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox), GTK_BUTTONBOX_END);
  gtk_button_box_set_spacing(GTK_BUTTON_BOX(bbox), 5);
  gtk_container_add(GTK_CONTAINER(main_vb), bbox);
  gtk_widget_show(bbox);

  ok_bt = gtk_button_new_with_label ("OK");
  gtk_signal_connect(GTK_OBJECT(ok_bt), "clicked",
    GTK_SIGNAL_FUNC(goto_frame_ok_cb), GTK_OBJECT(goto_frame_w));
  GTK_WIDGET_SET_FLAGS(ok_bt, GTK_CAN_DEFAULT);
  gtk_box_pack_start (GTK_BOX (bbox), ok_bt, TRUE, TRUE, 0);
  gtk_widget_grab_default(ok_bt);
  gtk_widget_show(ok_bt);

  cancel_bt = gtk_button_new_with_label ("Cancel");
  gtk_signal_connect(GTK_OBJECT(cancel_bt), "clicked",
    GTK_SIGNAL_FUNC(goto_frame_close_cb), GTK_OBJECT(goto_frame_w));
  GTK_WIDGET_SET_FLAGS(cancel_bt, GTK_CAN_DEFAULT);
  gtk_box_pack_start (GTK_BOX (bbox), cancel_bt, TRUE, TRUE, 0);
  gtk_widget_show(cancel_bt);

  /* Attach pointers to needed widgets to the capture prefs window/object */
  gtk_object_set_data(GTK_OBJECT(goto_frame_w), E_GOTO_FNUMBER_KEY, fnumber_te);

  gtk_widget_show(goto_frame_w);
}

static void
goto_frame_ok_cb(GtkWidget *ok_bt, gpointer parent_w)
{
  GtkWidget *fnumber_te;
  gchar *fnumber_text;
  guint fnumber;
  char *p;

  fnumber_te = (GtkWidget *) gtk_object_get_data(GTK_OBJECT(parent_w), E_GOTO_FNUMBER_KEY);

  fnumber_text = gtk_entry_get_text(GTK_ENTRY(fnumber_te));
  fnumber = strtoul(fnumber_text, &p, 10);
  if (p == fnumber_text || *p != '\0') {
    /* Illegal number.
       XXX - what about negative numbers (which "strtoul()" allows)?
       Can we hack up signal handlers for the widget to make it
       reject attempts to type in characters other than digits? */
    simple_dialog(ESD_TYPE_WARN, NULL,
		"The frame number you entered isn't a valid number.");
    return;
  }

  if (!goto_frame(&cf, fnumber)) {
    /* No such frame.
       XXX - distinguish between "no such frame" and "that frame isn't
       selected by the display filter" - and, in the latter case, add
       it to the display filter? */
    simple_dialog(ESD_TYPE_WARN, NULL, "There is no frame with that frame number.");
    return;
  }

  gtk_widget_destroy(GTK_WIDGET(parent_w));
}

static void
goto_frame_close_cb(GtkWidget *close_bt, gpointer parent_w)
{
  gtk_grab_remove(GTK_WIDGET(parent_w));
  gtk_widget_destroy(GTK_WIDGET(parent_w));
}