ui/gtk/help_dlg.c

   1 /* help_dlg.c
   2  *
   3  * $Id$
   4  *
   5  * Laurent Deniel <laurent.deniel@free.fr>
   6  *
   7  * Wireshark - Network traffic analyzer
   8  * By Gerald Combs <gerald@wireshark.org>
   9  * Copyright 2000 Gerald Combs
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version 2
  14  * of the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  24  */
  25
  26 #include "config.h"
  27 #include <stdio.h>
  28 #include <errno.h>
  29
  30 #include <gtk/gtk.h>
  31
  32 #include <epan/prefs.h>
  33
  34 #include "ui/gtk/help_dlg.h"
  35 #include "ui/gtk/text_page_utils.h"
  36 #include "ui/gtk/gtkglobals.h"
  37 #include "ui/gtk/gui_utils.h"
  38 #include "ui/gtk/dlg_utils.h"
  39 #include "ui/gtk/webbrowser.h"
  40
  41
  42 #define HELP_DIR        "help"
  43 #define NOTEBOOK_KEY    "notebook_key"
  44
  45 /*
  46  * Keep a static pointer to the current "Help" window, if any, so that
  47  * if somebody tries to do "Help->Help" while there's already a
  48  * "Help" window up, we just pop up the existing one, rather than
  49  * creating a new one.
  50 */
  51 static GtkWidget *help_w = NULL;
  52
  53 /*
  54  * Keep a list of text widgets and corresponding file names as well
  55  * (for text format changes).
  56  */
  57 typedef struct {
  58     char *topic;
  59     char *pathname;
  60     GtkWidget *page;
  61 } help_page_t;
  62
  63 static GSList *help_text_pages = NULL;
  64
  65
  66 /**
  67  * Redraw all help pages, to use a new font.
  68  */
  69 void help_redraw(void)
  70 {
  71     GSList *help_page_ent;
  72     help_page_t *help_page;
  73
  74     if (help_w != NULL) {
  75         for (help_page_ent = help_text_pages; help_page_ent != NULL;
  76              help_page_ent = g_slist_next(help_page_ent))
  77         {
  78             help_page = (help_page_t *)help_page_ent->data;
  79             text_page_redraw(help_page->page, help_page->pathname);
  80         }
  81     }
  82 }
  83
  84 void
  85 topic_action(topic_action_e action)
  86 {
  87     char *url;
  88
  89     url = topic_action_url(action);
  90
  91     if(url != NULL) {
  92         browser_open_url(url);
  93         g_free(url);
  94     }
  95 }
  96
  97 void
  98 topic_cb(GtkWidget *w _U_, topic_action_e action)
  99 {
 100     topic_action(action);
 101 }
 102
 103 gboolean
 104 topic_menu_cb(GtkWidget *w _U_, GdkEventButton *event _U_, gpointer user_data)
 105 {
 106     topic_action((topic_action_e)GPOINTER_TO_INT(user_data));
 107     return TRUE;
 108 }