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path: root/src/prefs-dialog.c
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/*
 *  Copyright (C) 2000, 2001, 2002 Marco Pesenti Gritti
 *
 *  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, 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.
 *
 *  $Id$
 */

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

#include "prefs-dialog.h"
#include "ephy-dialog.h"
#include "ephy-prefs.h"
#include "ephy-embed-shell.h"
#include "ephy-shell.h"
#include "ephy-session.h"
#include "ephy-embed-prefs.h"
#include "ephy-embed-single.h"
#include "ephy-shell.h"
#include "ephy-gui.h"
#include "eel-gconf-extensions.h"
#include "language-editor.h"
#include "ephy-langs.h"
#include "ephy-encodings.h"
#include "ephy-debug.h"

#include <glib/gi18n.h>
#include <gtk/gtkframe.h>
#include <gtk/gtkhbox.h>
#include <gtk/gtkvbox.h>
#include <gtk/gtkradiobutton.h>
#include <gtk/gtktogglebutton.h>
#include <gtk/gtkimage.h>
#include <gtk/gtklabel.h>
#include <gtk/gtkstock.h>
#include <string.h>

static void
prefs_dialog_class_init (PrefsDialogClass *klass);
static void
prefs_dialog_init (PrefsDialog *pd);
static void
prefs_dialog_finalize (GObject *object);

/* Glade callbacks */
void
prefs_proxy_auto_url_reload_cb (GtkWidget *button,
                    EphyDialog *dialog);
void
prefs_clear_cache_button_clicked_cb (GtkWidget *button,
                     gpointer data);
void
prefs_dialog_response_cb (GtkDialog *dialog, gint response_id, gpointer data);
void
fonts_language_optionmenu_changed_cb (GtkWidget *optionmenu, EphyDialog *dialog);
void
prefs_homepage_current_button_clicked_cb (GtkWidget *button,
                      EphyDialog *dialog);
void
prefs_homepage_blank_button_clicked_cb (GtkWidget *button,
                    EphyDialog *dialog);
void
prefs_language_more_button_clicked_cb (GtkWidget *button,
                       EphyDialog *dialog);

static const
struct
{
    char *name;
    char *code;
}
languages [] =
{
    /**
     * please translate like this: "<your language> (System setting)"
     * Examples:
     * "de"    translation: "Deutsch (Systemeinstellung)"
     * "en_AU" translation: "English, Australia (System setting)" or
     *                      "Australian English (System setting)"
     */ 
    { N_("System language"), "system" },
    { N_("Afrikaans"), "ak" },
    { N_("Albanian"), "sq" },
    { N_("Arabic"), "ar" },
    { N_("Azerbaijani"), "az" },
    { N_("Basque"), "eu" },
    { N_("Breton"), "br" },
    { N_("Bulgarian"), "bg" },
    { N_("Byelorussian"), "be" },
    { N_("Catalan"), "ca" },
    { N_("Simplified Chinese"), "zh-cn" },
    { N_("Traditional Chinese"), "zh-tw" },
    { N_("Chinese"), "zh" },
    { N_("Croatian"), "hr" },
    { N_("Czech"), "cs" },
    { N_("Danish"), "da" },
    { N_("Dutch"), "nl" },
    { N_("English"), "en" },
    { N_("Esperanto"), "eo" },
    { N_("Estonian"), "et" },
    { N_("Faeroese"), "fo" },
    { N_("Finnish"), "fi" },
    { N_("French"), "fr" },
    { N_("Galician"), "gl" },
    { N_("German"), "de" },
    { N_("Greek"), "el" },
    { N_("Hebrew"), "he" },
    { N_("Hungarian"), "hu" },
    { N_("Icelandic"), "is" },
    { N_("Indonesian"), "id" },
    { N_("Irish"), "ga" },
    { N_("Italian"), "it" },
    { N_("Japanese"), "ja" },
    { N_("Korean"), "ko" },
    { N_("Latvian"), "lv" },
    { N_("Lithuanian"), "lt" },
    { N_("Macedonian"), "mk" },
    { N_("Malay"), "ms" },
    { N_("Norwegian/Nynorsk"), "nn" },
    { N_("Norwegian/Bokmal"), "nb" },
    { N_("Norwegian"), "no" },
    { N_("Polish"), "pl" },
    { N_("Portuguese"), "pt" },
    { N_("Portuguese of Brazil"), "pt-br" },
    { N_("Romanian"), "ro" },
    { N_("Russian"), "ru" },
    { N_("Scottish"), "gd" },
    { N_("Serbian"), "sr" },
    { N_("Slovak"), "sk" },
    { N_("Slovenian"), "sl" },
    { N_("Spanish"), "es" },
    { N_("Swedish"), "sv" },
    { N_("Tamil"), "ta" },
    { N_("Turkish"), "tr" },
    { N_("Ukrainian"), "uk" },
    { N_("Vietnamese"), "vi" },
    { N_("Walloon"), "wa" }
};
static guint n_languages = G_N_ELEMENTS (languages);

static const
char *cookies_accept_enum [] =
{
    "anywhere", "current site", "nowhere"
};
static guint n_cookies_accept_enum = G_N_ELEMENTS (cookies_accept_enum);

enum
{
    FONT_TYPE_VARIABLE,
    FONT_TYPE_MONOSPACE
};

const
char *fonts_types[] =
{
    "variable",
    "monospace"
};

enum
{
    FONT_SIZE_FIXED,
    FONT_SIZE_VAR,
    FONT_SIZE_MIN
};

const
char *size_prefs[] =
{
    CONF_RENDERING_FONT_FIXED_SIZE,
    CONF_RENDERING_FONT_VAR_SIZE,
    CONF_RENDERING_FONT_MIN_SIZE
};

enum
{
    WINDOW_PROP,
    NOTEBOOK_PROP,

    /* General */
    HOMEPAGE_ENTRY_PROP,

    /* Fonts and Colors */
    FONTS_LANGUAGE_PROP,
    VARIABLE_PROP,
    MONOSPACE_PROP,
    FIXED_SIZE_PROP,
    VARIABLE_SIZE_PROP,
    MIN_SIZE_PROP,
    USE_COLORS_PROP,
    USE_FONTS_PROP,

    /* Privacy */
    ALLOW_POPUPS_PROP,
    ALLOW_JAVA_PROP,
    ALLOW_JS_PROP,
    ACCEPT_COOKIES_PROP,
    DISK_CACHE_PROP,

    /* Language */
    AUTO_ENCODING_PROP,
    DEFAULT_ENCODING_PROP,
    LANGUAGE_PROP,
    LANGUAGE_LABEL_PROP,
    DEFAULT_ENCODING_LABEL_PROP,
    AUTO_ENCODING_LABEL_PROP
};

#define CONF_FONTS_FOR_LANGUAGE "/apps/epiphany/dialogs/preferences_font_language"

static const
EphyDialogProperty properties [] =
{
    { WINDOW_PROP, "prefs_dialog", NULL, PT_NORMAL, NULL },
    { NOTEBOOK_PROP, "prefs_notebook", NULL, PT_NORMAL, NULL },

    /* General */
    { HOMEPAGE_ENTRY_PROP, "homepage_entry", CONF_GENERAL_HOMEPAGE, PT_AUTOAPPLY, NULL },

    /* Fonts and Colors */
    { FONTS_LANGUAGE_PROP, "fonts_language_optionmenu", CONF_FONTS_FOR_LANGUAGE, PT_AUTOAPPLY, NULL },
    { VARIABLE_PROP, "variable_combo", NULL, PT_NORMAL, NULL },
    { MONOSPACE_PROP, "monospace_combo", NULL, PT_NORMAL, NULL },
    { FIXED_SIZE_PROP, "fixed_size_spinbutton", NULL, PT_NORMAL, NULL },
    { VARIABLE_SIZE_PROP, "variable_size_spinbutton", NULL, PT_NORMAL, NULL },
    { MIN_SIZE_PROP, "min_size_spinbutton", NULL, PT_NORMAL, NULL },
    { USE_COLORS_PROP, "use_colors_checkbutton", CONF_RENDERING_USE_OWN_COLORS, PT_AUTOAPPLY, NULL },
    { USE_FONTS_PROP, "use_fonts_checkbutton", CONF_RENDERING_USE_OWN_FONTS, PT_AUTOAPPLY, NULL },

    /* Privacy */
    { ALLOW_POPUPS_PROP, "popups_allow_checkbutton", CONF_SECURITY_ALLOW_POPUPS, PT_AUTOAPPLY, NULL },
    { ALLOW_JAVA_PROP, "enable_java_checkbutton", CONF_SECURITY_JAVA_ENABLED, PT_AUTOAPPLY, NULL },
    { ALLOW_JS_PROP, "enable_javascript_checkbutton", CONF_SECURITY_JAVASCRIPT_ENABLED, PT_AUTOAPPLY, NULL },
    { ACCEPT_COOKIES_PROP, "cookies_radiobutton", CONF_SECURITY_COOKIES_ACCEPT, PT_AUTOAPPLY, NULL },
    { DISK_CACHE_PROP, "disk_cache_spin", CONF_NETWORK_CACHE_SIZE, PT_AUTOAPPLY, NULL },

    /* Languages */
    { AUTO_ENCODING_PROP, "auto_encoding_optionmenu", CONF_LANGUAGE_AUTODETECT_ENCODING, PT_AUTOAPPLY, NULL },
    { DEFAULT_ENCODING_PROP, "default_encoding_optionmenu", CONF_LANGUAGE_DEFAULT_ENCODING, PT_AUTOAPPLY, NULL },
    { LANGUAGE_PROP, "language_optionmenu", NULL, PT_NORMAL, NULL },
    { LANGUAGE_LABEL_PROP, "language_label", NULL, PT_NORMAL, NULL },
    { DEFAULT_ENCODING_LABEL_PROP, "default_encoding_label", NULL, PT_NORMAL, NULL },
    { AUTO_ENCODING_LABEL_PROP, "auto_encoding_label", NULL, PT_NORMAL, NULL },

    { -1, NULL, NULL }
};

static
int lang_size_group [] =
{
    LANGUAGE_LABEL_PROP,
    DEFAULT_ENCODING_LABEL_PROP,
    AUTO_ENCODING_LABEL_PROP
};
static guint n_lang_size_group = G_N_ELEMENTS (lang_size_group);

typedef struct
{
    gchar *name;
    gchar *key;
    gchar *code;
} EphyLangItem;

#define EPHY_PREFS_DIALOG_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_PREFS_DIALOG, PrefsDialogPrivate))

struct PrefsDialogPrivate
{
    GtkWidget *notebook;
    GtkWidget *window;

    GList *langs;
    GList *fonts_languages;

    guint language;
    gboolean switching;
};

static GObjectClass *parent_class = NULL;

GType
prefs_dialog_get_type (void)
{
        static GType prefs_dialog_type = 0;

        if (prefs_dialog_type == 0)
        {
                static const GTypeInfo our_info =
                {
                        sizeof (PrefsDialogClass),
                        NULL, /* base_init */
                        NULL, /* base_finalize */
                        (GClassInitFunc) prefs_dialog_class_init,
                        NULL,
                        NULL, /* class_data */
                        sizeof (PrefsDialog),
                        0, /* n_preallocs */
                        (GInstanceInitFunc) prefs_dialog_init
                };

        prefs_dialog_type = g_type_register_static (EPHY_TYPE_DIALOG,
                                "PrefsDialog",
                                &our_info, 0);
        }

        return prefs_dialog_type;

}

EphyDialog *
prefs_dialog_new (GtkWidget *parent)
{
    EphyDialog *dialog;

    dialog = EPHY_DIALOG (g_object_new (EPHY_TYPE_PREFS_DIALOG,
                        "ParentWindow", parent,
                        NULL));

        return dialog;
}

static void
prefs_dialog_class_init (PrefsDialogClass *klass)
{
        GObjectClass *object_class = G_OBJECT_CLASS (klass);

        parent_class = g_type_class_peek_parent (klass);

        object_class->finalize = prefs_dialog_finalize;

    g_type_class_add_private (object_class, sizeof(PrefsDialogPrivate));
}

static void
free_lang_item (EphyLangItem *item, gpointer user_data)
{
    if (item == NULL) return;
        
    g_free (item->name);
    g_free (item->key);
    g_free (item->code);
    g_free (item);
}

static void
prefs_dialog_finalize (GObject *object)
{
    PrefsDialog *pd = EPHY_PREFS_DIALOG (object);

    g_list_foreach (pd->priv->langs, (GFunc) free_lang_item, NULL);
    g_list_free (pd->priv->langs);

    g_list_foreach (pd->priv->fonts_languages, (GFunc) g_free, NULL);
    g_list_free (pd->priv->fonts_languages);

        G_OBJECT_CLASS (parent_class)->finalize (object);
}

static void
prefs_dialog_show_help (PrefsDialog *pd)
{
    gint id;

    /* FIXME: Once we actually have documentation we
     * should point these at the correct links.
     */
    gchar *help_preferences[] = {
        "setting-preferences",
        "setting-preferences",
        "setting-preferences",
        "setting-preferences"
    };

    id = gtk_notebook_get_current_page (GTK_NOTEBOOK (pd->priv->notebook));

    ephy_gui_help (GTK_WINDOW (pd->priv->window), "epiphany", help_preferences[id]);
}

static const char *
get_current_language_code (PrefsDialog *dialog)
{
    GList *lang;
    const EphyFontsLanguageInfo *info;

    lang = g_list_nth (dialog->priv->fonts_languages, dialog->priv->language);
    g_assert (lang != NULL);
    info = (EphyFontsLanguageInfo *) lang->data;

    return info->code;
}

static void
setup_font_menu (PrefsDialog *dialog,
         const char *type,
         GtkWidget *combo)
{
    GList *fonts = NULL;
    gchar *name;
    char key[255];
    GtkWidget *entry = GTK_COMBO(combo)->entry;
    EphyEmbedSingle *single;

    single = ephy_embed_shell_get_embed_single
        (EPHY_EMBED_SHELL (ephy_shell));

    fonts = ephy_embed_single_get_font_list
            (single, get_current_language_code (dialog));

    /* Get the default font */
    g_snprintf (key, 255, "%s_%s_%s", CONF_RENDERING_FONT, type,
            get_current_language_code (dialog));
    name = eel_gconf_get_string (key);
    if (name == NULL)
    {
        if (strcmp (type, "variable") == 0)
        {
            name = g_strdup ("sans-serif");
        }
        else
        {
            name = g_strdup ("monospace");
        }
    }

    /* set popdown doesnt like NULL */
    if (fonts == NULL)
    {
        fonts = g_list_alloc ();
    }

    gtk_combo_set_popdown_strings (GTK_COMBO(combo), fonts);

    /* set the default value */
    if (name != NULL)
    {
        int pos = 0;

        gtk_editable_delete_text (GTK_EDITABLE(entry), 0, -1);
        gtk_editable_insert_text (GTK_EDITABLE(entry),
                      name, strlen (name),
                      &pos);
    }

    g_free (name);

    g_list_foreach (fonts, (GFunc)g_free, NULL);
    g_list_free (fonts);
}

static void
save_font_menu (PrefsDialog *dialog,
        int type,
        GtkWidget *entry)
{
    char *name;
    char key[255];

    name = gtk_editable_get_chars (GTK_EDITABLE (entry), 0, -1);

    /* do not save empty fonts */
    if (!name || *name == '\0')
    {
        g_free (name);
        return;
    }

    g_snprintf (key, 255, "%s_%s_%s", CONF_RENDERING_FONT,
            fonts_types[type],
            get_current_language_code (dialog));
    eel_gconf_set_string (key, name);
    g_free (name);
}

static void
font_entry_changed_cb (GtkWidget *entry, PrefsDialog *dialog)
{
    int type;

    if (dialog->priv->switching) return;

    type = GPOINTER_TO_INT (g_object_get_data (G_OBJECT(entry),
                            "type"));
    save_font_menu (dialog, type, entry);
}

static void
attach_font_signal (PrefsDialog *dialog, int prop,
            gpointer type)
{
    GtkWidget *combo;
    GtkWidget *entry;

    combo = ephy_dialog_get_control (EPHY_DIALOG(dialog),
                       prop);
    entry = GTK_COMBO(combo)->entry;
    g_object_set_data (G_OBJECT(entry), "type", type);
    g_signal_connect (entry, "changed",
              G_CALLBACK(font_entry_changed_cb),
              dialog);
}

static void
attach_fonts_signals (PrefsDialog *dialog)
{
    attach_font_signal (dialog, VARIABLE_PROP,
                GINT_TO_POINTER(FONT_TYPE_VARIABLE));
    attach_font_signal (dialog, MONOSPACE_PROP,
                GINT_TO_POINTER(FONT_TYPE_MONOSPACE));
}

static void
size_spinbutton_changed_cb (GtkWidget *spin, PrefsDialog *dialog)
{
    int type;
    char key[255];

    if (dialog->priv->switching) return;

    type = GPOINTER_TO_INT(g_object_get_data (G_OBJECT(spin), "type"));

    g_snprintf (key, 255, "%s_%s",
            size_prefs[type],
            get_current_language_code (dialog));
    eel_gconf_set_integer (key, gtk_spin_button_get_value (GTK_SPIN_BUTTON (spin)));
}

static void
attach_size_controls_signals (PrefsDialog *dialog)
{
    GtkWidget *spin;

    spin = ephy_dialog_get_control (EPHY_DIALOG(dialog),
                      FIXED_SIZE_PROP);
    g_object_set_data (G_OBJECT(spin), "type",
               GINT_TO_POINTER(FONT_SIZE_FIXED));
    g_signal_connect (spin, "value_changed",
              G_CALLBACK(size_spinbutton_changed_cb),
              dialog);

    spin = ephy_dialog_get_control (EPHY_DIALOG(dialog),
                      VARIABLE_SIZE_PROP);
    g_object_set_data (G_OBJECT(spin), "type",
               GINT_TO_POINTER(FONT_SIZE_VAR));
    g_signal_connect (spin, "value_changed",
              G_CALLBACK(size_spinbutton_changed_cb),
              dialog);

    spin = ephy_dialog_get_control (EPHY_DIALOG(dialog),
                      MIN_SIZE_PROP);
    g_object_set_data (G_OBJECT(spin), "type",
               GINT_TO_POINTER(FONT_SIZE_MIN));
    g_signal_connect (spin, "value_changed",
              G_CALLBACK(size_spinbutton_changed_cb),
              dialog);
}

static void
setup_size_control (PrefsDialog *dialog,
            const char *pref,
            int default_size,
            GtkWidget *spin)
{
    char key[255];
    int size;

    g_snprintf (key, 255, "%s_%s", pref,
            get_current_language_code (dialog));
    size = eel_gconf_get_integer (key);

    if (size == 0) size = default_size;

    gtk_spin_button_set_value (GTK_SPIN_BUTTON(spin), size);
}

static void
setup_size_controls (PrefsDialog *dialog)
{
    GtkWidget *spin;

    spin = ephy_dialog_get_control (EPHY_DIALOG(dialog),
                      FIXED_SIZE_PROP);
    setup_size_control (dialog, CONF_RENDERING_FONT_FIXED_SIZE, 10, spin);

    spin = ephy_dialog_get_control (EPHY_DIALOG(dialog),
                      VARIABLE_SIZE_PROP);
    setup_size_control (dialog, CONF_RENDERING_FONT_VAR_SIZE, 11, spin);

    spin = ephy_dialog_get_control (EPHY_DIALOG(dialog),
                      MIN_SIZE_PROP);
    setup_size_control (dialog, CONF_RENDERING_FONT_MIN_SIZE, 7, spin);
}

static void
setup_fonts (PrefsDialog *dialog)
{
    GtkWidget *combo;

    dialog->priv->switching = TRUE;

    combo = ephy_dialog_get_control (EPHY_DIALOG(dialog),
                     VARIABLE_PROP);
    setup_font_menu (dialog, "variable", combo);

    combo = ephy_dialog_get_control (EPHY_DIALOG(dialog),
                     MONOSPACE_PROP);
    setup_font_menu (dialog, "monospace", combo);

    dialog->priv->switching = FALSE;
}

static int
fonts_language_info_cmp (const EphyFontsLanguageInfo *i1,
             const EphyFontsLanguageInfo *i2)
{
    return g_utf8_collate (i1->title, i2->title);
}

static void
create_fonts_language_menu (PrefsDialog *dialog)
{
    GtkWidget *optionmenu, *menu;
    GList *list = NULL, *l;
    guint n_fonts_languages, i;
    char **lang_codes;
    const EphyFontsLanguageInfo *fonts_languages;

    optionmenu = ephy_dialog_get_control (EPHY_DIALOG (dialog),
                          FONTS_LANGUAGE_PROP);

    menu = gtk_menu_new ();

    fonts_languages = ephy_font_languages ();
    n_fonts_languages = ephy_font_n_languages ();
    
    for (i = 0; i < n_fonts_languages; i++)
    {
        EphyFontsLanguageInfo *info;

        info = g_new0 (EphyFontsLanguageInfo, 1);
        info->title = _(fonts_languages[i].title);
        info->code = fonts_languages[i].code;

        list = g_list_prepend (list, info);
    }

    dialog->priv->fonts_languages =
        g_list_sort (list, (GCompareFunc) fonts_language_info_cmp);

    for (l = dialog->priv->fonts_languages; l != NULL; l = l->next)
    {
        EphyFontsLanguageInfo *info = (EphyFontsLanguageInfo *) l->data;
        GtkWidget *item;

        item = gtk_menu_item_new_with_label (info->title);
        gtk_menu_shell_append (GTK_MENU_SHELL(menu), item);
        gtk_widget_show (item);
    }

    gtk_option_menu_set_menu (GTK_OPTION_MENU(optionmenu), menu);

    lang_codes = g_new0 (char *, n_fonts_languages);
    for (l = dialog->priv->fonts_languages, i=0; l != NULL; l = l->next)
    {
        EphyFontsLanguageInfo *info = (EphyFontsLanguageInfo *) l->data;

        lang_codes[i] = info->code;

        i++;
    }
    ephy_dialog_add_enum (EPHY_DIALOG (dialog), FONTS_LANGUAGE_PROP,
                  n_fonts_languages, (const char **) lang_codes);
    /* the entries themselves are const, so don't use g_strfreev here */
    g_free (lang_codes);

    dialog->priv->language =
        gtk_option_menu_get_history (GTK_OPTION_MENU (optionmenu));

    g_signal_connect (optionmenu, "changed",
              G_CALLBACK (fonts_language_optionmenu_changed_cb),
              dialog);
}

static int
find_encoding_in_list_cmp (gconstpointer info, const char *encoding)
{
    EphyNode *node = (EphyNode *) info;
    const char *code;

    code = ephy_node_get_property_string
            (node, EPHY_NODE_ENCODING_PROP_ENCODING);

    return strcmp (code, encoding);
}

static int
sort_encodings (gconstpointer a, gconstpointer b)
{
    EphyNode *node1 = (EphyNode *) a;
    EphyNode *node2 = (EphyNode *) b;
    const char *key1, *key2;

    key1 = ephy_node_get_property_string
            (node1, EPHY_NODE_ENCODING_PROP_COLLATION_KEY);
    key2 = ephy_node_get_property_string
            (node2, EPHY_NODE_ENCODING_PROP_COLLATION_KEY);

    return strcmp (key1, key2);
}

static int
sort_detectors (gconstpointer a, gconstpointer b)
{
    EphyNode *node1 = (EphyNode *) a;
    EphyNode *node2 = (EphyNode *) b;
    const char *code1, *code2;

    code1 = ephy_node_get_property_string
            (node1, EPHY_NODE_ENCODING_PROP_ENCODING);
    code2 = ephy_node_get_property_string
            (node2, EPHY_NODE_ENCODING_PROP_ENCODING);

    /* "" is the code for No Autodetector; make sure it's first
     * in the list.
     */
    if (strcmp (code1, "") == 0)
    {
        return -1;
    }
    if (strcmp (code2, "") == 0)
    {
        return 1;
    }

    return sort_encodings (a, b);
}

static void
create_optionmenu (PrefsDialog *dialog,
           int property,
           GList *list,
           const char *key,
           const char *default_value)
{
    GList *element, *l;
    GtkWidget *menu, *optionmenu;
    char *value;
    char **codes;
    guint pos, i, num;

    menu = gtk_menu_new ();

    optionmenu = ephy_dialog_get_control (EPHY_DIALOG (dialog),
                          property);

    num = g_list_length (list);
    codes = g_new0 (char *, num);

    for (l = list, i=0; l != NULL; l = l->next, i++)
    {
        EphyNode *node = (EphyNode *) l->data;
        const char *title, *code;
        GtkWidget *item;

        title = ephy_node_get_property_string
                (node, EPHY_NODE_ENCODING_PROP_TITLE_ELIDED);

        item = gtk_menu_item_new_with_label (title);
        gtk_menu_shell_append (GTK_MENU_SHELL(menu), item);
        gtk_widget_show (item);

        code = ephy_node_get_property_string
                (node, EPHY_NODE_ENCODING_PROP_ENCODING);
        codes[i] = (char *) code;
    }

    gtk_option_menu_set_menu (GTK_OPTION_MENU (optionmenu), menu);

    /* init value */
    value = eel_gconf_get_string (key);
    /* fallback */
    if (value == NULL || value[0] == '\0')
    {
        g_free (value);
        value = g_strdup (default_value);
    }

    element = g_list_find_custom (list, value,
                (GCompareFunc) find_encoding_in_list_cmp);
    g_free (value);
    pos = g_list_position (list, element);

    ephy_dialog_add_enum (EPHY_DIALOG (dialog), property,
                  num, (const char **) codes);

    gtk_option_menu_set_history (GTK_OPTION_MENU(optionmenu), pos);

    /* the entries themselves are const, so we don't use g_strfreev here */
    g_free (codes);
}

static gint
compare_lang_items (const EphyLangItem *i1, const EphyLangItem *i2)
{
    return strcmp (i1->key, i2->key);
}

static gint
find_lang_code (const EphyLangItem *i1, const gchar *code)
{
    return strcmp (i1->code, code);
}

static void
create_languages_list (PrefsDialog *dialog)
{
    GList *list = NULL, *lang;
    GSList *pref_list, *l;
    EphyLangItem *item;
    const gchar *code;
    guint i;

    for (i = 0; i < n_languages; i++)
    {       
        item = g_new0 (EphyLangItem, 1);

        item->name = g_strdup (_(languages[i].name));
        item->key  = g_utf8_collate_key (item->name, -1);
        item->code = g_strdup (languages[i].code);

        list = g_list_prepend (list, item);
    }

    /* add custom languages */
    pref_list = eel_gconf_get_string_list (CONF_RENDERING_LANGUAGE);

    for (l = pref_list; l != NULL; l = l->next)
    {
        code = (const gchar*) l->data;

        lang = g_list_find_custom (list, code,
                       (GCompareFunc) find_lang_code);

        if (lang == NULL)
        {
            /* not found in list */
            item = g_new0 (EphyLangItem, 1);

            item->name = g_strdup_printf (_("Custom [%s]"), code);
            item->key  = g_utf8_collate_key (item->name, -1);
            item->code = g_strdup (code);

            list = g_list_prepend (list, item);
        }
    }

    if (pref_list)
    {
        g_slist_foreach (pref_list, (GFunc) g_free, NULL);
        g_slist_free (pref_list);
    }

    list = g_list_sort (list, (GCompareFunc) compare_lang_items);

    dialog->priv->langs = list;
}

static GtkWidget *
general_prefs_new_language_menu (PrefsDialog *dialog)
{
    GList *l;
    GtkWidget *menu;
    EphyLangItem *li;

    menu = gtk_menu_new ();

    for (l = dialog->priv->langs; l != NULL; l = l->next)
    {
        GtkWidget *item;

        li = (EphyLangItem*) l->data;
        item = gtk_menu_item_new_with_label (li->name);
        gtk_menu_shell_append (GTK_MENU_SHELL(menu), item);
        gtk_widget_show (item);
        g_object_set_data (G_OBJECT (item), "desc", li->name);
    }

    return menu;
}

static void
language_menu_changed_cb (GtkOptionMenu *option_menu,
                  gpointer data)
{
    gint i;
    GSList *list = NULL;
    GList *lang = NULL;

    g_return_if_fail (EPHY_IS_PREFS_DIALOG (data));

    list = eel_gconf_get_string_list (CONF_RENDERING_LANGUAGE);
    g_return_if_fail (list != NULL);

    /* Subst the first item according to the optionmenu */
    i = gtk_option_menu_get_history (option_menu);

    lang = g_list_nth (EPHY_PREFS_DIALOG (data)->priv->langs, i);

    if (lang)
    {
        g_free (list->data);
        list->data = g_strdup (((EphyLangItem *) lang->data)->code);

        eel_gconf_set_string_list (CONF_RENDERING_LANGUAGE, list);
    }

    g_slist_foreach (list, (GFunc) g_free, NULL);
    g_slist_free (list);
}

static void
create_language_menu (PrefsDialog *dialog)
{
    GtkWidget *optionmenu;
    GtkWidget *menu;
    const gchar *code;
    gint i = 0;
    GSList *list;
    GList *lang;

    optionmenu = ephy_dialog_get_control (EPHY_DIALOG (dialog),
                          LANGUAGE_PROP);

    menu = general_prefs_new_language_menu (dialog);

    gtk_option_menu_set_menu (GTK_OPTION_MENU(optionmenu), menu);

    /* init value from first element of the list */
    list = eel_gconf_get_string_list (CONF_RENDERING_LANGUAGE);
    if (list)
    {
        code = (const gchar *) list->data;
        lang = g_list_find_custom (dialog->priv->langs, code,
                       (GCompareFunc)find_lang_code);

        if (lang)
        {
            i = g_list_position (dialog->priv->langs, lang);
        }

        g_slist_foreach (list, (GFunc) g_free, NULL);
        g_slist_free (list);
    }

    gtk_option_menu_set_history (GTK_OPTION_MENU(optionmenu), i);

    g_signal_connect (optionmenu, "changed",
              G_CALLBACK (language_menu_changed_cb),
              dialog);
}

static void
set_homepage_entry (EphyDialog *dialog,
            const char *new_location)
{
    GtkWidget *entry;
    int pos = 0;

    entry = ephy_dialog_get_control (dialog, HOMEPAGE_ENTRY_PROP);

    gtk_editable_delete_text (GTK_EDITABLE (entry), 0, -1);
    gtk_editable_insert_text (GTK_EDITABLE (entry), new_location,
                  strlen (new_location),
                  &pos);
}


static void
prefs_dialog_init (PrefsDialog *pd)
{
    EphyDialog *dialog = EPHY_DIALOG (pd);
    EphyEncodings *encodings;
    GdkPixbuf *icon;
    GList *list;

    pd->priv = EPHY_PREFS_DIALOG_GET_PRIVATE (pd);

    ephy_dialog_construct (EPHY_DIALOG (pd),
                   properties,
                   "prefs-dialog.glade",
                   "prefs_dialog");

    ephy_dialog_add_enum (EPHY_DIALOG (pd), ACCEPT_COOKIES_PROP,
                  n_cookies_accept_enum, cookies_accept_enum);

    ephy_dialog_set_size_group (EPHY_DIALOG (pd), lang_size_group,
                    n_lang_size_group);

    pd->priv->window = ephy_dialog_get_control (dialog, WINDOW_PROP);
    pd->priv->notebook = ephy_dialog_get_control (dialog, NOTEBOOK_PROP);
    pd->priv->langs = NULL;
    pd->priv->fonts_languages = NULL;

    icon = gtk_widget_render_icon (pd->priv->window,
                       GTK_STOCK_PREFERENCES,
                       GTK_ICON_SIZE_MENU,
                       "prefs_dialog");
    gtk_window_set_icon (GTK_WINDOW (pd->priv->window), icon);
    g_object_unref(icon);

    pd->priv->switching = FALSE;
    create_fonts_language_menu (pd);
    attach_fonts_signals (pd);
    attach_size_controls_signals (pd);
    create_languages_list (pd);

    encodings = EPHY_ENCODINGS (ephy_embed_shell_get_encodings
                    (EPHY_EMBED_SHELL (ephy_shell)));

    list = ephy_encodings_get_encodings (encodings, LG_ALL);
    list = g_list_sort (list, (GCompareFunc) sort_encodings);
    create_optionmenu (pd, DEFAULT_ENCODING_PROP, list,
               CONF_LANGUAGE_DEFAULT_ENCODING, "ISO-8859-1");
    g_list_free (list);

    list = ephy_encodings_get_detectors (encodings);
    list = g_list_sort (list, (GCompareFunc) sort_detectors);
    create_optionmenu (pd, AUTO_ENCODING_PROP, list,
               CONF_LANGUAGE_AUTODETECT_ENCODING, "");
    g_list_free (list);

    create_language_menu (pd);
}

void
prefs_dialog_response_cb (GtkDialog *dialog, gint response_id, gpointer data)
{
    if (response_id == GTK_RESPONSE_CLOSE)
    {
        gtk_widget_destroy (GTK_WIDGET(dialog));
    }
    else if (response_id == GTK_RESPONSE_HELP)
    {
        PrefsDialog *pd = (PrefsDialog *)data;
        prefs_dialog_show_help (pd);
    }
}

void
prefs_clear_cache_button_clicked_cb (GtkWidget *button,
                     gpointer data)
{
    EphyEmbedSingle *single;

    single = ephy_embed_shell_get_embed_single
        (EPHY_EMBED_SHELL (ephy_shell));

    ephy_embed_single_clear_cache (single);
}

void
fonts_language_optionmenu_changed_cb (GtkWidget *optionmenu,
                      EphyDialog *dialog)
{
    guint i;
    PrefsDialog *pd = EPHY_PREFS_DIALOG (dialog);

    i = gtk_option_menu_get_history
        (GTK_OPTION_MENU (optionmenu));

    pd->priv->language = i;

    setup_fonts (pd);
    setup_size_controls (pd);
}

void
prefs_homepage_current_button_clicked_cb (GtkWidget *button,
                      EphyDialog *dialog)
{
    EphySession *session;
    EphyWindow *window;
    EphyEmbed *embed;
    char *location;

    session = EPHY_SESSION (ephy_shell_get_session (ephy_shell));
    window = ephy_session_get_active_window (session);
    g_return_if_fail (window != NULL);

    embed = ephy_window_get_active_embed (window);
    g_return_if_fail (embed != NULL);

    location = ephy_embed_get_location (embed, TRUE);
    set_homepage_entry (dialog, location);
    g_free (location);
}

void
prefs_homepage_blank_button_clicked_cb (GtkWidget *button,
                    EphyDialog *dialog)
{
    set_homepage_entry (dialog, "");
}

static void
fill_language_editor (LanguageEditor *le, PrefsDialog *dialog)
{
    GSList *strings;
    GSList *tmp;
    GList *lang;
    gint i;
    const gchar *code;
    EphyLangItem *li;

    strings = eel_gconf_get_string_list (CONF_RENDERING_LANGUAGE);
    g_return_if_fail (strings != NULL);

    for (tmp = strings; tmp != NULL; tmp = g_slist_next (tmp))
    {
        code = (const gchar *) tmp->data;

        lang = g_list_find_custom (dialog->priv->langs, code,
                       (GCompareFunc) find_lang_code);

        if (lang)
        {
            i = g_list_position (dialog->priv->langs, lang);
            li = (EphyLangItem *) lang->data;

            language_editor_add (le, li->name, i);
        }
    }

    g_slist_foreach (strings, (GFunc) g_free, NULL);
    g_slist_free (strings);
}

static void
language_dialog_changed_cb (LanguageEditor *le,
                GSList *list,
                PrefsDialog *dialog)
{
    GtkWidget *optionmenu;
    const GSList *l;
    GSList *langs = NULL;
    GList *lang;
    gint i;
    EphyLangItem *li;

    optionmenu = ephy_dialog_get_control (EPHY_DIALOG (dialog),
                        LANGUAGE_PROP);
    gtk_option_menu_set_history (GTK_OPTION_MENU(optionmenu),
                     GPOINTER_TO_INT(list->data));

    for (l = list; l != NULL; l = l->next)
    {
        i = GPOINTER_TO_INT (l->data);
        lang = g_list_nth (dialog->priv->langs, i);

        if (lang)
        {
            li = (EphyLangItem *) lang->data;

            langs = g_slist_append (langs, li->code);
        }
    }

    eel_gconf_set_string_list (CONF_RENDERING_LANGUAGE, langs);
    g_slist_free (langs);
}

void
prefs_language_more_button_clicked_cb (GtkWidget *button,
                       EphyDialog *dialog)
{
    LanguageEditor *editor;
    GtkWidget *menu;
    GtkWidget *toplevel;

    menu = general_prefs_new_language_menu (EPHY_PREFS_DIALOG (dialog));

    toplevel = gtk_widget_get_toplevel (button);
    editor = language_editor_new (toplevel);
    language_editor_set_menu (editor, menu);
    fill_language_editor (editor, EPHY_PREFS_DIALOG (dialog));
    ephy_dialog_set_modal (EPHY_DIALOG(editor), TRUE);

    g_signal_connect (editor, "changed",
              G_CALLBACK(language_dialog_changed_cb),
              dialog);

    ephy_dialog_show (EPHY_DIALOG(editor));
}