path: root/src/prefs-dialog.c

/*
 *  Copyright (C) 200-2003 Marco Pesenti Gritti
 *  Copyright (C) 2003, 2004 Christian Persch
 *
 *  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.
 *
 *  $Id$
 */

#include "config.h"

#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 "ephy-langs.h"
#include "ephy-encodings.h"
#include "ephy-debug.h"
#include "ephy-file-chooser.h"
#include "ephy-file-helpers.h"
#include "ephy-tree-model-node.h"
#include "ephy-tree-model-sort.h"

#include <glib/gi18n.h>
#include <gtk/gtklabel.h>
#include <gtk/gtkcellrenderertext.h>
#include <gtk/gtkcelllayout.h>
#include <gtk/gtktreeselection.h>
#include <gtk/gtkframe.h>
#include <gtk/gtkhbox.h>
#include <gtk/gtkvbox.h>
#include <gtk/gtkradiobutton.h>
#include <gtk/gtktogglebutton.h>
#include <gtk/gtkcombobox.h>
#include <gtk/gtktreemodel.h>
#include <gtk/gtkliststore.h>
#include <gtk/gtkimage.h>
#include <gtk/gtklabel.h>
#include <gtk/gtkstock.h>
#include <string.h>

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

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

/* Glade callbacks */
void prefs_clear_cache_button_clicked_cb    (GtkWidget *button,
                         gpointer data);
void prefs_dialog_response_cb           (GtkDialog *widget,
                         gint response_id,
                         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);
void prefs_download_path_button_clicked_cb  (GtkWidget *button,
                         PrefsDialog *dialog);
void language_editor_add_button_clicked_cb  (GtkWidget *button,
                         PrefsDialog *pd);
void language_editor_remove_button_clicked_cb   (GtkWidget *button,
                         PrefsDialog *pd);
void language_editor_up_button_clicked_cb   (GtkWidget *button,
                         PrefsDialog *pd);
void language_editor_down_button_clicked_cb (GtkWidget *button,
                         PrefsDialog *pd);

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
};

const
int default_size [] =
{
    10,
    11,
    7
};

enum
{
    WINDOW_PROP,
    NOTEBOOK_PROP,

    /* General */
    HOMEPAGE_ENTRY_PROP,
    HOMEPAGE_CURRENT_PROP,
    HOMEPAGE_BLANK_PROP,
    AUTO_OPEN_PROP,
    DOWNLOAD_PATH_BUTTON_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,
    DEFAULT_ENCODING_LABEL_PROP,
    AUTO_ENCODING_LABEL_PROP,
    LANGUAGE_ADD_BUTTON_PROP,
    LANGUAGE_REMOVE_BUTTON_PROP,
    LANGUAGE_UP_BUTTON_PROP,
    LANGUAGE_DOWN_BUTTON_PROP,
    LANGUAGE_TREEVIEW_PROP
};

static const
EphyDialogProperty properties [] =
{
    { "prefs_dialog",   NULL, PT_NORMAL, 0},
    { "prefs_notebook", NULL, PT_NORMAL, 0},

    /* General */
    { "homepage_entry",         CONF_GENERAL_HOMEPAGE,    PT_AUTOAPPLY, G_TYPE_STRING },
    { "homepage_current_button",        NULL,             PT_NORMAL,    0 },
    { "homepage_blank_button",      NULL,             PT_NORMAL,    0 },
    { "automatic_downloads_checkbutton",    CONF_AUTO_DOWNLOADS,      PT_AUTOAPPLY, 0 },
    { "download_path_button",       NULL,             PT_NORMAL,    0 },

    /* Fonts and Colors */
    { "fonts_language_combo",   CONF_FONTS_FOR_LANGUAGE,    PT_AUTOAPPLY,   G_TYPE_STRING },
    { "variable_combo",     NULL,               PT_AUTOAPPLY,   G_TYPE_STRING },
    { "monospace_combo",        NULL,               PT_AUTOAPPLY,   G_TYPE_STRING },
    { "fixed_size_spinbutton",  NULL,               PT_AUTOAPPLY,   0 },
    { "variable_size_spinbutton",   NULL,               PT_AUTOAPPLY,   0 },
    { "min_size_spinbutton",    NULL,               PT_AUTOAPPLY,   0 },
    { "use_colors_checkbutton", CONF_RENDERING_USE_OWN_COLORS,  PT_AUTOAPPLY,   0 },
    { "use_fonts_checkbutton",  CONF_RENDERING_USE_OWN_FONTS,   PT_AUTOAPPLY,   0 },

    /* Privacy */
    { "popups_allow_checkbutton",       CONF_SECURITY_ALLOW_POPUPS,   PT_AUTOAPPLY, 0 },
    { "enable_java_checkbutton",        CONF_SECURITY_JAVA_ENABLED,   PT_AUTOAPPLY, 0 },
    { "enable_javascript_checkbutton",  CONF_SECURITY_JAVASCRIPT_ENABLED, PT_AUTOAPPLY, 0 },
    { "cookies_radiobutton",        CONF_SECURITY_COOKIES_ACCEPT,     PT_AUTOAPPLY, G_TYPE_STRING },
    { "disk_cache_spin",            CONF_NETWORK_CACHE_SIZE,      PT_AUTOAPPLY, 0 },

    /* Languages */
    { "auto_encoding_combo",    CONF_LANGUAGE_AUTODETECT_ENCODING,  PT_AUTOAPPLY,   G_TYPE_STRING },
    { "default_encoding_combo", CONF_LANGUAGE_DEFAULT_ENCODING,     PT_AUTOAPPLY,   G_TYPE_STRING },
    { "default_encoding_label", NULL,                   PT_NORMAL,  0 },
    { "auto_encoding_label",    NULL,                   PT_NORMAL,  0 },
    { "lang_add_button",        NULL,                   PT_NORMAL,  0 },
    { "lang_remove_button",     NULL,                   PT_NORMAL,  0 },
    { "lang_up_button",     NULL,                   PT_NORMAL,  0 },
    { "lang_down_button",       NULL,                   PT_NORMAL,  0 },
    { "lang_treeview",      NULL,                   PT_NORMAL,  0 },

    { NULL }
};

enum
{
    LANGUAGE_DIALOG,
    LANGUAGE_PROP
};

static const
EphyDialogProperty add_lang_props [] =
{
    { "add_language_dialog", NULL,  PT_NORMAL,  0 },
    { "languages_treeview",  NULL,  PT_NORMAL,  G_TYPE_STRING },

    { NULL }
};

enum
{
    COL_FONTS_LANG_NAME,
    COL_FONTS_LANG_CODE
};

enum
{
    COL_LANG_NAME,
    COL_LANG_CODE
};

enum
{
    COL_ENC_NAME,
    COL_ENC_CODE
};

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

struct PrefsDialogPrivate
{
    GtkWidget *download_dir_chooser;
    GtkTreeView *lang_treeview;
    GtkTreeModel *lang_model;
    EphyDialog *add_lang_dialog;
    GtkWidget *lang_add_button;
    GtkWidget *lang_remove_button;
    GtkWidget *lang_up_button;
    GtkWidget *lang_down_button;
};

static GObjectClass *parent_class = NULL;

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

    if (G_UNLIKELY (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
        };

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

    return type;
}

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

    if (dialog->priv->add_lang_dialog != NULL)
    {
        g_object_remove_weak_pointer
            (G_OBJECT (dialog->priv->add_lang_dialog),
            (gpointer *) &dialog->priv->add_lang_dialog);
        g_object_unref (dialog->priv->add_lang_dialog);
    }

    if (dialog->priv->download_dir_chooser != NULL)
    {
        g_object_remove_weak_pointer
            (G_OBJECT (dialog->priv->download_dir_chooser),
             (gpointer *) &dialog->priv->download_dir_chooser);
    }

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

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
prefs_dialog_show_help (EphyDialog *dialog)
{
    GtkWidget *window, *notebook;
    int id;

    char *help_preferences[] = {
        "general-preferences",
        "fonts-and-colors-preferences",
        "privacy-preferences",
        "language-preferences"
    };

    ephy_dialog_get_controls (dialog,
                  properties[WINDOW_PROP].id, &window,
                  properties[NOTEBOOK_PROP].id, &notebook,
                  NULL);

    id = gtk_notebook_get_current_page (GTK_NOTEBOOK (notebook));
    id = CLAMP (id, 0, 3);

    ephy_gui_help (GTK_WINDOW (window), "epiphany", help_preferences[id]);
}

static void
setup_font_combo (EphyDialog *dialog,
          const char *type,
          const char *code,
          int prop)
{
    GtkWidget *combo;
    GtkListStore *store;
    GtkTreeModel *sortmodel;
    GtkTreeIter iter;
    GList *fonts, *l;
    char *name;
    char key[255];
    EphyEmbedSingle *single;

    single = EPHY_EMBED_SINGLE (ephy_embed_shell_get_embed_single (embed_shell));
    fonts = ephy_embed_single_get_font_list (single, code);

    g_snprintf (key, 255, "%s_%s_%s", CONF_RENDERING_FONT, type, code);
    name = eel_gconf_get_string (key);

    /* sanitise the pref */
    if (name == NULL || name[0] == '\0'
        || g_list_find_custom (fonts, name, (GCompareFunc) strcmp) == NULL)
    {
        if (prop == VARIABLE_PROP)
        {
            eel_gconf_set_string (key, "sans-serif");
        }
        else
        {
            eel_gconf_set_string (key, "monospace");
        }
    }
    g_free (name);

    combo = ephy_dialog_get_control (dialog, properties[prop].id);
    store = gtk_list_store_new (1, G_TYPE_STRING);

    for (l = fonts; l != NULL; l = l->next)
    {
        gtk_list_store_append (store, &iter);
        gtk_list_store_set (store, &iter, 0, (char *) l->data, -1);
    }
    g_list_foreach (fonts, (GFunc) g_free, NULL);
    g_list_free (fonts);

    sortmodel = gtk_tree_model_sort_new_with_model (GTK_TREE_MODEL (store));
    gtk_tree_sortable_set_sort_column_id
        (GTK_TREE_SORTABLE (sortmodel), 0, GTK_SORT_ASCENDING);

    ephy_dialog_set_pref (dialog, properties[prop].id, NULL);

    gtk_combo_box_set_model (GTK_COMBO_BOX (combo), sortmodel);
    gtk_combo_box_set_active (GTK_COMBO_BOX (combo), -1);

    ephy_dialog_set_pref (dialog, properties[prop].id, key);

    g_object_unref (store);
    g_object_unref (sortmodel);
}

static void
fonts_language_changed_cb (EphyDialog *dialog,
               const GValue *value,
               gpointer data)
{
    const char *code;
    char key[128];
    int size;

    code = g_value_get_string (value);

    LOG ("fonts language combo changed, new code '%s'", code)

    setup_font_combo (dialog, "variable", code, VARIABLE_PROP);
    setup_font_combo (dialog, "monospace", code, MONOSPACE_PROP);

    g_snprintf (key, sizeof (key), "%s_%s", size_prefs[FONT_SIZE_VAR], code);
    size = eel_gconf_get_integer (key);
    if (size <= 0)
    {
        eel_gconf_set_integer (key, default_size[FONT_SIZE_VAR]);
    }
    ephy_dialog_set_pref (dialog, properties[VARIABLE_SIZE_PROP].id, key);

    g_snprintf (key, sizeof (key), "%s_%s", size_prefs[FONT_SIZE_FIXED], code);
    size = eel_gconf_get_integer (key);
    if (size <= 0)
    {
        eel_gconf_set_integer (key, default_size[FONT_SIZE_FIXED]);
    }
    ephy_dialog_set_pref (dialog, properties[FIXED_SIZE_PROP].id, key);

    g_snprintf (key, sizeof (key), "%s_%s", size_prefs[FONT_SIZE_MIN], code);
    size = eel_gconf_get_integer (key);
    if (size <= 0)
    {
        eel_gconf_set_integer (key, default_size[FONT_SIZE_MIN]);
    }
    ephy_dialog_set_pref (dialog, properties[MIN_SIZE_PROP].id, key);
}

static void
create_fonts_language_menu (EphyDialog *dialog)
{
    GtkWidget *combo;
    GtkCellRenderer *renderer;
    GtkListStore *store;
    GtkTreeModel *sortmodel;
    GtkTreeIter iter;
    guint n_fonts_languages, i;
    const EphyFontsLanguageInfo *fonts_languages;

    combo = ephy_dialog_get_control (dialog, properties[FONTS_LANGUAGE_PROP].id);

    store = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_STRING);

    fonts_languages = ephy_font_languages ();
    n_fonts_languages = ephy_font_n_languages ();
    
    for (i = 0; i < n_fonts_languages; i++)
    {
        gtk_list_store_append (store, &iter);
        gtk_list_store_set (store, &iter,
                    COL_FONTS_LANG_NAME, _(fonts_languages[i].title),
                    COL_FONTS_LANG_CODE, fonts_languages[i].code,
                    -1);
    }

    sortmodel = gtk_tree_model_sort_new_with_model (GTK_TREE_MODEL (store));
    gtk_tree_sortable_set_sort_column_id
        (GTK_TREE_SORTABLE (sortmodel), COL_FONTS_LANG_NAME, GTK_SORT_ASCENDING);

    gtk_combo_box_set_model (GTK_COMBO_BOX (combo), sortmodel);

        renderer = gtk_cell_renderer_text_new ();
        gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), renderer, TRUE);
        gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo), renderer,
                                        "text", COL_FONTS_LANG_NAME,
                                        NULL);

    ephy_dialog_set_data_column (dialog, properties[FONTS_LANGUAGE_PROP].id, COL_FONTS_LANG_CODE);

    g_signal_connect (dialog, "changed::fonts_language_combo",
              G_CALLBACK (fonts_language_changed_cb),
              NULL);

    g_object_unref (store);
    g_object_unref (sortmodel);
}

static void
create_node_combo (EphyDialog *dialog,
           int prop,
           EphyEncodings *encodings,
           EphyNode *node,
           const char *key,
           const char *default_value)
{
    EphyTreeModelNode *nodemodel;
    GtkTreeModel *sortmodel;
    GtkComboBox *combo;
    GtkCellRenderer *renderer;
    char *code;
    int title_col, data_col;

    code = eel_gconf_get_string (key);
    if (code == NULL || ephy_encodings_get_node (encodings, code, FALSE) == NULL)
    {
        /* safe default */
        eel_gconf_set_string (key, default_value);
    }
    g_free (code);

    combo = GTK_COMBO_BOX (ephy_dialog_get_control (dialog, properties[prop].id));

    nodemodel = ephy_tree_model_node_new (node);

    title_col = ephy_tree_model_node_add_prop_column
            (nodemodel, G_TYPE_STRING, EPHY_NODE_ENCODING_PROP_TITLE_ELIDED);
    data_col = ephy_tree_model_node_add_prop_column
            (nodemodel, G_TYPE_STRING, EPHY_NODE_ENCODING_PROP_ENCODING);

    sortmodel = ephy_tree_model_sort_new (GTK_TREE_MODEL (nodemodel));

    gtk_tree_sortable_set_sort_column_id
        (GTK_TREE_SORTABLE (sortmodel), title_col, GTK_SORT_ASCENDING);

    gtk_combo_box_set_model (combo, GTK_TREE_MODEL (sortmodel));

        renderer = gtk_cell_renderer_text_new ();
        gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), renderer, TRUE);
        gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo), renderer,
                                        "text", title_col,
                                        NULL);

    ephy_dialog_set_data_column (dialog, properties[prop].id, data_col);

    g_object_unref (nodemodel);
    g_object_unref (sortmodel);
}

static void
language_editor_add (PrefsDialog *pd,
             const char *code,
             const char *desc)
{
    GtkTreeIter iter;

    g_return_if_fail (code != NULL && desc != NULL);

    if (gtk_tree_model_get_iter_first (pd->priv->lang_model, &iter))
    {
        do
        {
            char *c;

            gtk_tree_model_get (pd->priv->lang_model, &iter,
                        COL_LANG_CODE, &c,
                        -1);

            if (strcmp (code, c) == 0)
            {
                g_free (c);

                /* already in list, don't allow a duplicate */
                return;
            }
            g_free (c);
        }
        while (gtk_tree_model_iter_next (pd->priv->lang_model, &iter));
    }

    gtk_list_store_append (GTK_LIST_STORE (pd->priv->lang_model), &iter);
    
    gtk_list_store_set (GTK_LIST_STORE (pd->priv->lang_model), &iter,
                COL_LANG_NAME, desc,
                COL_LANG_CODE, code,
                -1);
}

static void
language_editor_update_pref (PrefsDialog *pd)
{
    GtkTreeIter iter;
    GSList *codes = NULL;

    if (gtk_tree_model_get_iter_first (pd->priv->lang_model, &iter))
    {
        do
        {
            char *code;
        
            gtk_tree_model_get (pd->priv->lang_model, &iter,
                        COL_LANG_CODE, &code,
                        -1);

            codes = g_slist_prepend (codes, code);
        }
        while (gtk_tree_model_iter_next (pd->priv->lang_model, &iter));
    }

    codes = g_slist_reverse (codes);
    eel_gconf_set_string_list (CONF_RENDERING_LANGUAGE, codes);

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

static void
language_editor_update_buttons (PrefsDialog *dialog)
{
    GtkTreeSelection *selection;
    GtkTreeModel *model;
    GtkTreePath *path;
    GtkTreeIter iter;
    int selected;

    selection = gtk_tree_view_get_selection (dialog->priv->lang_treeview);

    gtk_widget_set_sensitive (dialog->priv->lang_remove_button, FALSE);
    gtk_widget_set_sensitive (dialog->priv->lang_up_button, FALSE);
    gtk_widget_set_sensitive (dialog->priv->lang_down_button, FALSE);
    
    if (gtk_tree_selection_get_selected (selection, &model, &iter))
    {
        path = gtk_tree_model_get_path (model, &iter);
    
        selected = gtk_tree_path_get_indices (path)[0];
    
        gtk_widget_set_sensitive (dialog->priv->lang_remove_button, TRUE);
        gtk_widget_set_sensitive (dialog->priv->lang_up_button, selected > 0);
        gtk_widget_set_sensitive (dialog->priv->lang_down_button,
            selected < gtk_tree_model_iter_n_children (model, NULL) - 1);

        gtk_tree_path_free (path);
    }
}

static void
add_lang_dialog_response_cb (GtkWidget *widget,
                 int response,
                 PrefsDialog *pd)
{
    EphyDialog *dialog = pd->priv->add_lang_dialog;
    GtkTreeView *treeview;
    GtkTreeModel *model;
    GtkTreeSelection *selection;
    GtkTreeIter iter;
    GList *rows, *r;

    g_return_if_fail (dialog != NULL);

    if (response == GTK_RESPONSE_OK)
    {
        treeview = GTK_TREE_VIEW (ephy_dialog_get_control
                (dialog, add_lang_props[LANGUAGE_PROP].id));
        selection = gtk_tree_view_get_selection (treeview);

        rows = gtk_tree_selection_get_selected_rows (selection, &model);

        for (r = rows; r != NULL; r = r->next)
        {
            GtkTreePath *path = (GtkTreePath *) r->data;

            if (gtk_tree_model_get_iter (model, &iter, path))
            {
                char *code, *desc;
                
                gtk_tree_model_get (model, &iter,
                            COL_LANG_NAME, &desc,
                            COL_LANG_CODE, &code,
                            -1);

                language_editor_add (pd, code, desc);
        
                g_free (desc);
                g_free (code);
            }
        }           

        g_list_foreach (rows, (GFunc) gtk_tree_path_free, NULL);
        g_list_free (rows);

        language_editor_update_pref (pd);
        language_editor_update_buttons (pd);
    }

    g_object_unref (dialog);
}

static EphyDialog *
setup_add_language_dialog (PrefsDialog *pd)
{
    EphyDialog *dialog;
    GtkWidget *window;
    GtkListStore *store;
    GtkTreeModel *sortmodel;
    GtkTreeView *treeview;
    GtkCellRenderer *renderer;
    GtkTreeViewColumn *column;
    GtkTreeSelection *selection;
    GtkTreeIter iter;
    int i;

    window = ephy_dialog_get_control (EPHY_DIALOG (pd), properties[WINDOW_PROP].id);

    dialog =  EPHY_DIALOG (g_object_new (EPHY_TYPE_DIALOG,
                         "parent-window", window,
                         "default-width", 260,
                         "default-height", 230,
                         NULL));

    ephy_dialog_construct (dialog, 
                   add_lang_props,
                   ephy_file ("prefs-dialog.glade"),
                   "add_language_dialog",
                   NULL);

    store = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_STRING);

    for (i = 0; i < n_languages; i++)
    {
        gtk_list_store_append (store, &iter);

        gtk_list_store_set (store, &iter,
                    COL_LANG_NAME, _(languages[i].name),
                    COL_LANG_CODE, languages[i].code,
                    -1);
    }

    sortmodel = gtk_tree_model_sort_new_with_model (GTK_TREE_MODEL (store));
    gtk_tree_sortable_set_sort_column_id
        (GTK_TREE_SORTABLE (sortmodel), COL_LANG_NAME, GTK_SORT_ASCENDING);

    ephy_dialog_get_controls (dialog,
                  add_lang_props[LANGUAGE_PROP].id, &treeview,
                  add_lang_props[LANGUAGE_DIALOG].id, &window,
                  NULL);

    gtk_tree_view_set_reorderable (GTK_TREE_VIEW (treeview), FALSE);

    gtk_tree_view_set_model (treeview, sortmodel);

    gtk_tree_view_set_headers_visible (treeview, FALSE);

    renderer = gtk_cell_renderer_text_new ();

    gtk_tree_view_insert_column_with_attributes (treeview,
                             0, "Language",
                             renderer,
                             "text", 0,
                             NULL);
    column = gtk_tree_view_get_column (treeview, 0);
    gtk_tree_view_column_set_resizable (column, TRUE);
    gtk_tree_view_column_set_sort_column_id (column, COL_LANG_NAME);

    selection = gtk_tree_view_get_selection (treeview);
    gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);

    g_signal_connect (window, "response",
              G_CALLBACK (add_lang_dialog_response_cb), pd);

    g_object_unref (store);
    g_object_unref (sortmodel);

    return dialog;
}

void
language_editor_add_button_clicked_cb (GtkWidget *button,
                       PrefsDialog *pd)
{
    if (pd->priv->add_lang_dialog == NULL)
    {
        pd->priv->add_lang_dialog = setup_add_language_dialog (pd);

        g_object_add_weak_pointer
            (G_OBJECT (pd->priv->add_lang_dialog),
            (gpointer *) &pd->priv->add_lang_dialog);;
    }

    ephy_dialog_show (pd->priv->add_lang_dialog);
}

void
language_editor_remove_button_clicked_cb (GtkWidget *button,
                      PrefsDialog *pd)
{
    GtkTreeSelection *selection;
    GtkTreeModel *model;
    GtkTreeIter iter;

    selection = gtk_tree_view_get_selection (pd->priv->lang_treeview);

    if (gtk_tree_selection_get_selected (selection, &model, &iter))
    {
        gtk_list_store_remove (GTK_LIST_STORE (model), &iter);
    }

    language_editor_update_pref (pd);
    language_editor_update_buttons (pd);
}

void
language_editor_up_button_clicked_cb (GtkWidget *button,
                      PrefsDialog *pd)
{
    GtkTreeSelection *selection;
    GtkTreeModel *model;
    GtkTreeIter iter, iter_prev;
    GtkTreePath *path;

    selection = gtk_tree_view_get_selection (pd->priv->lang_treeview);

    if (gtk_tree_selection_get_selected (selection, &model, &iter))
    {
        path = gtk_tree_model_get_path (model, &iter);

        if (!gtk_tree_path_prev (path))
        {
            gtk_tree_path_free (path);
            return;
        }

        gtk_tree_model_get_iter (model, &iter_prev, path);

        gtk_list_store_swap (GTK_LIST_STORE (model), &iter_prev, &iter);

        gtk_tree_path_free (path);
    }

    language_editor_update_pref (pd);
    language_editor_update_buttons (pd);
}

void
language_editor_down_button_clicked_cb (GtkWidget *button,
                    PrefsDialog *pd)
{
    GtkTreeSelection *selection;
    GtkTreeModel *model;
    GtkTreeIter iter, iter_next;
    GtkTreePath *path;


    selection = gtk_tree_view_get_selection (pd->priv->lang_treeview);

    if (gtk_tree_selection_get_selected (selection, &model, &iter))
    {
        path = gtk_tree_model_get_path (model, &iter);

        gtk_tree_path_next (path);

        gtk_tree_model_get_iter (model, &iter_next, path);

        gtk_list_store_swap (GTK_LIST_STORE (model), &iter, &iter_next);

        gtk_tree_path_free (path);
    }

    language_editor_update_pref (pd);
    language_editor_update_buttons (pd);
}

static void
language_editor_treeview_drag_end_cb (GtkWidget *widget,
                      GdkDragContext *context,
                      PrefsDialog *dialog)
{
    language_editor_update_pref (dialog);
    language_editor_update_buttons (dialog);
}

static void
language_editor_selection_changed_cb (GtkTreeSelection *selection,
                      PrefsDialog *dialog)
{
    language_editor_update_buttons (dialog);
}

static void
create_language_section (EphyDialog *dialog)
{
    PrefsDialog *pd = EPHY_PREFS_DIALOG (dialog);
    GtkListStore *store;
    GtkTreeView *treeview;
    GtkCellRenderer *renderer;
    GtkTreeViewColumn *column;
    GtkTreeSelection *selection;
    GSList *list, *l, *ulist = NULL;

    ephy_dialog_get_controls
        (dialog,
         properties[LANGUAGE_TREEVIEW_PROP].id, &treeview,
         properties[LANGUAGE_ADD_BUTTON_PROP].id, &pd->priv->lang_add_button,
         properties[LANGUAGE_REMOVE_BUTTON_PROP].id, &pd->priv->lang_remove_button,
         properties[LANGUAGE_UP_BUTTON_PROP].id, &pd->priv->lang_up_button, 
         properties[LANGUAGE_DOWN_BUTTON_PROP].id, &pd->priv->lang_down_button,
         NULL);

    /* setup the languages treeview */
    pd->priv->lang_treeview = treeview;

    gtk_tree_view_set_reorderable (GTK_TREE_VIEW (treeview), TRUE);

    store = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_STRING);

    pd->priv->lang_model = GTK_TREE_MODEL (store);

    gtk_tree_view_set_model (treeview, pd->priv->lang_model);
    g_object_unref (store);

    gtk_tree_view_set_headers_visible (treeview, FALSE);

    renderer = gtk_cell_renderer_text_new ();

    gtk_tree_view_insert_column_with_attributes (treeview,
                             0, "Language",
                             renderer,
                             "text", 0,
                             NULL);
    column = gtk_tree_view_get_column (treeview, 0);
    gtk_tree_view_column_set_resizable (column, TRUE);
    gtk_tree_view_column_set_sort_column_id (column, COL_LANG_NAME);

    selection = gtk_tree_view_get_selection (treeview);
    gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE);

    /* Connect treeview signals */
    g_signal_connect (G_OBJECT (treeview), "drag_end",
              G_CALLBACK (language_editor_treeview_drag_end_cb), pd);
    g_signal_connect (G_OBJECT (selection), "changed",
              G_CALLBACK (language_editor_selection_changed_cb), pd);

    list = eel_gconf_get_string_list (CONF_RENDERING_LANGUAGE);

    /* uniquify list */
    for (l = list; l != NULL; l = l->next)
    {
        if (g_slist_find_custom (ulist, l->data, (GCompareFunc) strcmp) == NULL)
        {
            ulist = g_slist_prepend (ulist, g_strdup (l->data));
        }
    }
    ulist = g_slist_reverse (ulist);

    /* if modified, write back */
    if (g_slist_length (ulist) != g_slist_length (list))
    {
        eel_gconf_set_string_list (CONF_RENDERING_LANGUAGE, ulist);
    }

    /* Fill languages editor */
    for (l = ulist; l != NULL; l = l->next)
    {
        const char *code = (const char *) l->data;
        int i;

        for (i = 0; i < n_languages; i++)
        {
            if (strcmp (languages[i].code, code) == 0) break;
        }

        /* code isn't in stock list */
        if (i == n_languages)
        {
            char *text;

            text = g_strdup_printf (_("Custom [%s]"), code);
            language_editor_add (pd, code, text);
            g_free (text);
        }
        else
        {
            language_editor_add (pd, code, _(languages[i].name));
        }
    }

    language_editor_update_buttons (pd);

    /* Lockdown if key is not writable */
    if (eel_gconf_key_is_writable (CONF_RENDERING_LANGUAGE) == FALSE)
    {
        gtk_widget_set_sensitive (pd->priv->lang_add_button, FALSE);
        gtk_widget_set_sensitive (pd->priv->lang_remove_button, FALSE);
        gtk_widget_set_sensitive (pd->priv->lang_up_button, FALSE);
        gtk_widget_set_sensitive (pd->priv->lang_down_button, FALSE);
        gtk_widget_set_sensitive (GTK_WIDGET (pd->priv->lang_treeview), FALSE);
    }

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

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

static char*
get_download_button_label ()
{
    char *key, *label, *downloads_path, *converted_dp;

    key = eel_gconf_get_string (CONF_STATE_DOWNLOAD_DIR);

    downloads_path = ephy_file_downloads_dir ();
    converted_dp = g_filename_to_utf8 (downloads_path, -1, NULL, NULL, NULL);

    if (key == NULL || g_utf8_collate (key, "~") == 0)
    {
        /* Note that this does NOT refer to the home page but to a
         * user's home folder. It should be translated by the same
         * term as GTK+'s "Home" string to be consistent with the
         * filechooser */
        label = g_strdup (_("Home"));
    }
    else if ((converted_dp != NULL && g_utf8_collate (key, converted_dp) == 0) ||
         g_utf8_collate (key, "Downloads") == 0)
    {
        label = g_strdup (_("Downloads"));
    }
    else if (g_utf8_collate (key, "~/Desktop") == 0)
    {
        label = g_strdup (_("Desktop")); 
    }
    else if (g_utf8_collate (key, "Desktop") == 0)
    {
        label = g_strdup (_("Desktop")); 
    }
    else
    {
        label = g_strdup (key);
    }

    g_free (downloads_path);
    g_free (converted_dp);
    g_free (key);

    return label;
}
    
static void
create_download_path_label (EphyDialog *dialog)
{
    GtkWidget *button, *label;
    char *dir;

    button = ephy_dialog_get_control (dialog, properties[DOWNLOAD_PATH_BUTTON_PROP].id);
    
    dir = get_download_button_label ();
    label = gtk_label_new (dir);
    gtk_label_set_ellipsize (GTK_LABEL (label), PANGO_ELLIPSIZE_START);
    gtk_container_add (GTK_CONTAINER (button), label);
    g_free (dir);
    gtk_widget_show (label);

    gtk_widget_set_sensitive (button, eel_gconf_key_is_writable (CONF_STATE_DOWNLOAD_DIR));
}
    
static void
prefs_dialog_init (PrefsDialog *pd)
{
    EphyDialog *dialog = EPHY_DIALOG (pd);
    EphyEncodings *encodings;
    GtkWidget *window, *curr_button, *blank_button;
    GtkWidget *variable_combo, *monospace_combo;
    GtkCellRenderer *renderer;
    gboolean sensitive;

    pd->priv = EPHY_PREFS_DIALOG_GET_PRIVATE (pd);

    ephy_dialog_construct (dialog,
                   properties,
                   ephy_file ("prefs-dialog.glade"),
                   "prefs_dialog",
                   NULL);

    ephy_dialog_add_enum (dialog, properties[ACCEPT_COOKIES_PROP].id,
                  n_cookies_accept_enum, cookies_accept_enum);

    ephy_dialog_set_size_group (dialog,
                    properties[DEFAULT_ENCODING_LABEL_PROP].id,
                    properties[AUTO_ENCODING_LABEL_PROP].id,
                    NULL);

    ephy_dialog_get_controls
        (dialog,
         properties[WINDOW_PROP].id, &window,
         properties[HOMEPAGE_CURRENT_PROP].id, &curr_button,
         properties[HOMEPAGE_BLANK_PROP].id, &blank_button,
         properties[VARIABLE_PROP].id, &variable_combo,
         properties[MONOSPACE_PROP].id, &monospace_combo,
         NULL);

    gtk_window_set_icon_name (GTK_WINDOW (window), GTK_STOCK_PREFERENCES);

    /* set homepage button sensitivity */
    sensitive = eel_gconf_key_is_writable (CONF_GENERAL_HOMEPAGE);
    gtk_widget_set_sensitive (curr_button, sensitive);
    gtk_widget_set_sensitive (blank_button, sensitive);

        renderer = gtk_cell_renderer_text_new ();
        gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (variable_combo), renderer, TRUE);
        gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (variable_combo), renderer,
                                        "text", 0,
                                        NULL);
    ephy_dialog_set_data_column (dialog, properties[VARIABLE_PROP].id, 0);
        renderer = gtk_cell_renderer_text_new ();
        gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (monospace_combo), renderer, TRUE);
        gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (monospace_combo), renderer,
                                        "text", 0,
                                        NULL);
    ephy_dialog_set_data_column (dialog, properties[MONOSPACE_PROP].id, 0);

    create_fonts_language_menu (dialog);

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

    create_node_combo (dialog, DEFAULT_ENCODING_PROP, encodings,
               ephy_encodings_get_all (encodings),
               CONF_LANGUAGE_DEFAULT_ENCODING, "ISO-8859-1");
    create_node_combo (dialog, AUTO_ENCODING_PROP, encodings,
               ephy_encodings_get_detectors (encodings),
               CONF_LANGUAGE_AUTODETECT_ENCODING, "");

    create_language_section (dialog);

    create_download_path_label (dialog);
}

void
prefs_dialog_response_cb (GtkDialog *widget,
              gint response_id,
              EphyDialog *dialog)
{
    if (response_id == GTK_RESPONSE_CLOSE)
    {
        g_object_unref (dialog);
    }
    else if (response_id == GTK_RESPONSE_HELP)
    {
        prefs_dialog_show_help (dialog);
    }
}

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

    single = EPHY_EMBED_SINGLE (ephy_embed_shell_get_embed_single (embed_shell));
    ephy_embed_single_clear_cache (single);
}

static void
set_homepage_entry (EphyDialog *dialog,
            char *new_location)
{
    GValue value = { 0, };

    g_value_init (&value, G_TYPE_STRING);
    g_value_take_string (&value, new_location);
    ephy_dialog_set_value (dialog, properties[HOMEPAGE_ENTRY_PROP].id, &value);
    g_value_unset (&value);
}

void
prefs_homepage_current_button_clicked_cb (GtkWidget *button,
                      EphyDialog *dialog)
{
    GtkWidget *parent;
    EphyEmbed *embed;
    char *location;

    parent = ephy_dialog_get_parent (dialog);
    g_return_if_fail (parent != NULL);

    embed = ephy_window_get_active_embed (EPHY_WINDOW (parent));
    g_return_if_fail (embed != NULL);

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

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

static void
download_path_response_cb (GtkDialog *fc, gint response, EphyDialog *dialog)
{
    if (response == GTK_RESPONSE_ACCEPT)
    {
        char *dir;

        dir = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (fc));
        if (dir != NULL)
        {
            GtkWidget *button;
            char *label;

            eel_gconf_set_path (CONF_STATE_DOWNLOAD_DIR, dir);

            button = ephy_dialog_get_control (dialog, properties[DOWNLOAD_PATH_BUTTON_PROP].id);
            label = get_download_button_label ();
            gtk_label_set_text (GTK_LABEL (GTK_BIN (button)->child), label);

            g_free (dir);
            g_free (label);
        }
    }

    gtk_widget_destroy (GTK_WIDGET (fc));
}

void
prefs_download_path_button_clicked_cb (GtkWidget *button,
                       PrefsDialog *dialog)
{
    if (dialog->priv->download_dir_chooser == NULL)
    {
        GtkWidget *parent;
        EphyFileChooser *fc;

        parent = ephy_dialog_get_control
            (EPHY_DIALOG (dialog), properties[WINDOW_PROP].id);
    
        fc = ephy_file_chooser_new (_("Select a directory"),
                        GTK_WIDGET (parent),
                        GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER,
                        NULL, EPHY_FILE_FILTER_NONE);
        gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (fc),
                             g_get_home_dir ());

        g_signal_connect (GTK_DIALOG (fc), "response",
                    G_CALLBACK (download_path_response_cb),
                    dialog);
        dialog->priv->download_dir_chooser = GTK_WIDGET (fc);
        g_object_add_weak_pointer
            (G_OBJECT (fc), (gpointer *) &dialog->priv->download_dir_chooser);
    }

    gtk_widget_show (dialog->priv->download_dir_chooser);
}