/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Copyright © 200-2003 Marco Pesenti Gritti
 *  Copyright © 2003, 2004, 2005 Christian Persch
 *  Copyright © 2010 Igalia S.L.
 *
 *  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, see <http://www.gnu.org/licenses/>.
 */

#include "config.h"
#include "prefs-dialog.h"

#include "ephy-bookmarks.h"
#include "ephy-debug.h"
#include "ephy-embed-container.h"
#include "ephy-embed-prefs.h"
#include "ephy-embed-shell.h"
#include "ephy-embed-utils.h"
#include "ephy-encodings.h"
#include "ephy-file-chooser.h"
#include "ephy-file-helpers.h"
#include "ephy-gui.h"
#include "ephy-langs.h"
#include "ephy-prefs.h"
#include "ephy-session.h"
#include "ephy-settings.h"
#include "ephy-shell.h"
#include "clear-data-dialog.h"
#include "cookies-dialog.h"
#include "passwords-dialog.h"

#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <string.h>

#define DOWNLOAD_BUTTON_WIDTH	8

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

#include "languages.h"

enum
{
	COL_LANG_NAME,
	COL_LANG_CODE
};

struct PrefsDialogPrivate
{
	/* general */
	GtkWidget *download_button_hbox;
	GtkWidget *download_button_label;
	GtkWidget *automatic_downloads_checkbutton;
	GtkWidget *search_engine_combo;
	GtkWidget *popups_allow_checkbutton;
	GtkWidget *adblock_allow_checkbutton;
	GtkWidget *enable_plugins_checkbutton;

	/* fonts */
	GtkWidget *use_gnome_fonts_checkbutton;
	GtkWidget *custom_fonts_table;
	GtkWidget *sans_fontbutton;
	GtkWidget *serif_fontbutton;
	GtkWidget *mono_fontbutton;
	GtkWidget *css_checkbox;
	GtkWidget *css_edit_button;

	/* privacy */
	GtkWidget *always;
	GtkWidget *no_third_party;
	GtkWidget *never;
	GtkWidget *remember_passwords_checkbutton;
	GtkWidget *do_not_track_checkbutton;
	GtkWidget *clear_personal_data_button;

	/* language */
	GtkWidget *default_encoding_combo;
	GtkTreeView *lang_treeview;
	GtkWidget *lang_add_button;
	GtkWidget *lang_remove_button;
	GtkWidget *lang_up_button;
	GtkWidget *lang_down_button;
	GtkWidget *enable_spell_checking_checkbutton;

	GtkDialog *add_lang_dialog;
	GtkTreeView *add_lang_treeview;
	GtkTreeModel *lang_model;

	GHashTable *iso_639_table;
	GHashTable *iso_3166_table;
};

enum {
	COL_TITLE_ELIDED,
	COL_ENCODING,
	NUM_COLS
};

enum
{
	SEARCH_ENGINE_COL_NAME,
	SEARCH_ENGINE_COL_STOCK_URL,
	SEARCH_ENGINE_COL_URL,
	SEARCH_ENGINE_NUM_COLS
};

G_DEFINE_TYPE_WITH_PRIVATE (PrefsDialog, prefs_dialog, GTK_TYPE_DIALOG)

static void
prefs_dialog_finalize (GObject *object)
{
	PrefsDialog *dialog = EPHY_PREFS_DIALOG (object);
	PrefsDialogPrivate *priv = dialog->priv;

	if (priv->add_lang_dialog != NULL)
	{
		GtkDialog **add_lang_dialog = &priv->add_lang_dialog;

		g_object_remove_weak_pointer (G_OBJECT (priv->add_lang_dialog),
					      (gpointer *) add_lang_dialog);
		g_object_unref (priv->add_lang_dialog);
	}

	g_hash_table_destroy (priv->iso_639_table);
	g_hash_table_destroy (priv->iso_3166_table);

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

static void
on_manage_cookies_button_clicked (GtkWidget *button,
				  PrefsDialog *dialog)
{
	EphyCookiesDialog *cookies_dialog;

	cookies_dialog = ephy_cookies_dialog_new ();

	gtk_window_set_transient_for (GTK_WINDOW (cookies_dialog), GTK_WINDOW (dialog));
	gtk_window_set_modal (GTK_WINDOW (cookies_dialog), TRUE);
	gtk_window_present (GTK_WINDOW (cookies_dialog));
}

static void
on_manage_passwords_button_clicked (GtkWidget *button,
				    PrefsDialog *dialog)
{
	EphyPasswordsDialog *passwords_dialog;

	passwords_dialog = ephy_passwords_dialog_new ();

	gtk_window_set_transient_for (GTK_WINDOW (passwords_dialog), GTK_WINDOW (dialog));
	gtk_window_set_modal (GTK_WINDOW (passwords_dialog), TRUE);
	gtk_window_present (GTK_WINDOW (passwords_dialog));
}

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

	object_class->finalize = prefs_dialog_finalize;

	gtk_widget_class_set_template_from_resource (widget_class,
	                                             "/org/gnome/epiphany/prefs-dialog.ui");
	/* general */
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, automatic_downloads_checkbutton);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, search_engine_combo);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, popups_allow_checkbutton);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, adblock_allow_checkbutton);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, enable_plugins_checkbutton);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, download_button_hbox);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, download_button_label);

	/* fonts */
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, use_gnome_fonts_checkbutton);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, custom_fonts_table);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, sans_fontbutton);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, serif_fontbutton);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, mono_fontbutton);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, css_checkbox);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, css_edit_button);

	/* privacy */
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, always);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, no_third_party);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, never);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, remember_passwords_checkbutton);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, do_not_track_checkbutton);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, clear_personal_data_button);

	/* language */
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, default_encoding_combo);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, lang_treeview);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, lang_add_button);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, lang_remove_button);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, lang_up_button);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, lang_down_button);
	gtk_widget_class_bind_template_child_private (widget_class, PrefsDialog, enable_spell_checking_checkbutton);

	gtk_widget_class_bind_template_callback (widget_class, on_manage_cookies_button_clicked);
	gtk_widget_class_bind_template_callback (widget_class, on_manage_passwords_button_clicked);
}

static void
css_edit_button_clicked_cb (GtkWidget *button,
			    PrefsDialog *pd)
{
	GFile *css_file;

	css_file = g_file_new_for_path (g_build_filename (ephy_dot_dir (),
							  USER_STYLESHEET_FILENAME,
							  NULL));

	ephy_file_launch_handler ("text/plain", css_file,
				  gtk_get_current_event_time ());
	g_object_unref (css_file);
}

static gboolean
combo_get_mapping (GValue *value,
		   GVariant *variant,
		   gpointer user_data)
{
	GtkTreeModel *model;
	GtkTreeIter iter;
	gboolean valid = FALSE;
	const char *settings_name;
	int i;

	model = gtk_combo_box_get_model (GTK_COMBO_BOX (user_data));
	valid = gtk_tree_model_get_iter_first (model, &iter);
	settings_name = g_variant_get_string (variant, NULL);
	i = 0;

	while (valid)
	{
		char *item_name;
		gtk_tree_model_get (model, &iter, 1, &item_name, -1);

		if (g_strcmp0 (item_name, settings_name) == 0)
		{
			g_value_set_int (value, i);
			g_free (item_name);
			break;
		}

		i++;
		valid = gtk_tree_model_iter_next (model, &iter);
		g_free (item_name);
	}

	return TRUE;
}

static GVariant *
combo_set_mapping (const GValue *value,
		   const GVariantType *expected_type,
		   gpointer user_data)
{
	GVariant *variant = NULL;
	GtkTreeModel *model;
	GtkTreeIter iter;
	gboolean valid = FALSE;
	int n;

	n = g_value_get_int (value);
	model = gtk_combo_box_get_model (GTK_COMBO_BOX (user_data));
	valid = gtk_tree_model_iter_nth_child (model, &iter, NULL, n);

	if (valid)
	{
		char *item_name;
		gtk_tree_model_get (model, &iter, 1, &item_name, -1);

		variant = g_variant_new_string (item_name);

		g_free (item_name);
	}

	return variant;
}

static void
create_node_combo (PrefsDialog *dialog,
		   EphyEncodings *encodings,
		   const char *default_value)
{
	GtkComboBox *combo;
	GtkCellRenderer *renderer;
	GtkListStore *store;
	GList *all_encodings, *p;
	char *code;

	code = g_settings_get_string (EPHY_SETTINGS_WEB,
				      EPHY_PREFS_WEB_DEFAULT_ENCODING);
	if (code == NULL || ephy_encodings_get_encoding (encodings, code, FALSE) == NULL)
	{
		/* safe default */
		g_settings_set_string (EPHY_SETTINGS_WEB,
				       EPHY_PREFS_WEB_DEFAULT_ENCODING,
				       default_value);
	}
	g_free (code);

	combo = GTK_COMBO_BOX (dialog->priv->default_encoding_combo);

	store = gtk_list_store_new (NUM_COLS, G_TYPE_STRING, G_TYPE_STRING);
	all_encodings = ephy_encodings_get_all (encodings);
	for (p = all_encodings; p; p = p->next) 
	{
		GtkTreeIter iter;
		EphyEncoding *encoding = EPHY_ENCODING (p->data);
		
		gtk_list_store_append (store, &iter);
		gtk_list_store_set (store, &iter,
				    COL_TITLE_ELIDED, 
				    ephy_encoding_get_title_elided (encoding),
				    -1);
		gtk_list_store_set (store, &iter,
				    COL_ENCODING, 
				    ephy_encoding_get_encoding (encoding),
				    -1);
	}
	g_list_free (all_encodings);

	gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (store), COL_TITLE_ELIDED,
					      GTK_SORT_ASCENDING);
	gtk_combo_box_set_model (combo, GTK_TREE_MODEL (store));

	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_TITLE_ELIDED,
					NULL);

	g_settings_bind_with_mapping (EPHY_SETTINGS_WEB,
				      EPHY_PREFS_WEB_DEFAULT_ENCODING,
				      combo, "active",
				      G_SETTINGS_BIND_DEFAULT,
				      combo_get_mapping,
				      combo_set_mapping,
				      combo,
				      NULL);
}

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;
	GVariantBuilder builder;

	if (gtk_tree_model_get_iter_first (pd->priv->lang_model, &iter))
	{
		g_variant_builder_init (&builder, G_VARIANT_TYPE_STRING_ARRAY);

		do
		{
			char *code;
		
			gtk_tree_model_get (pd->priv->lang_model, &iter,
					    COL_LANG_CODE, &code,
					    -1);
			g_variant_builder_add (&builder, "s", code);
			g_free (code);
		}
		while (gtk_tree_model_iter_next (pd->priv->lang_model, &iter));

		g_settings_set (EPHY_SETTINGS_WEB,
				EPHY_PREFS_WEB_LANGUAGE,
				"as", &builder);
	} else {
		g_settings_set (EPHY_SETTINGS_WEB,
				EPHY_PREFS_WEB_LANGUAGE,
				"as", NULL);
	}
}

static void
language_editor_update_buttons (PrefsDialog *dialog)
{
	GtkTreeSelection *selection;
	GtkTreeModel *model;
	GtkTreePath *path;
	GtkTreeIter iter;
	gboolean can_remove = FALSE, can_move_up = FALSE, can_move_down = FALSE;
	int selected;

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

	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];

		can_remove = TRUE;
		can_move_up = selected > 0;
		can_move_down = 
			selected < gtk_tree_model_iter_n_children (model, NULL) - 1;

		gtk_tree_path_free (path);
	}

	gtk_widget_set_sensitive (dialog->priv->lang_remove_button, can_remove);
	gtk_widget_set_sensitive (dialog->priv->lang_up_button, can_move_up);
	gtk_widget_set_sensitive (dialog->priv->lang_down_button, can_move_down);
}

static void
add_lang_dialog_selection_changed (GtkTreeSelection *selection,
				   GtkWidget *button)
{
	int n_selected;

	n_selected = gtk_tree_selection_count_selected_rows (selection);
	gtk_widget_set_sensitive (button, n_selected > 0);
}

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

	g_return_if_fail (dialog != NULL);

	if (response == GTK_RESPONSE_ACCEPT)
	{
		selection = gtk_tree_view_get_selection (pd->priv->add_lang_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);
	}

	gtk_widget_destroy (GTK_WIDGET (dialog));
}

static char *
get_name_for_lang_code (PrefsDialog *pd,
			const char *code)
{
	char **str;
	char *name;
	const char *langname, *localename;
	int len;

	str = g_strsplit (code, "-", -1);
	len = g_strv_length (str);
	g_return_val_if_fail (len != 0, NULL);

	langname = (const char *) g_hash_table_lookup (pd->priv->iso_639_table, str[0]);

	if (len == 1 && langname != NULL)
	{
		name = g_strdup (dgettext (ISO_639_DOMAIN, langname));
	}
	else if (len == 2 && langname != NULL)
	{
		localename = (const char *) g_hash_table_lookup (pd->priv->iso_3166_table, str[1]);

		if (localename != NULL)
		{
			/* Translators: the first %s is the language name, and the
			 * second %s is the locale name. Example:
			 * "French (France)"
			 */
			name = g_strdup_printf (C_("language", "%s (%s)"),
						dgettext (ISO_639_DOMAIN, langname),
						dgettext (ISO_3166_DOMAIN, localename));
		}
		else
		{
			name = g_strdup_printf (C_("language", "%s (%s)"),
						dgettext (ISO_639_DOMAIN, langname), str[1]);
		}
	}
	else
	{
		/* Translators: this refers to a user-define language code
		 * (one which isn't in our built-in list).
		 */
		name = g_strdup_printf (C_("language", "User defined (%s)"), code);
	}

	g_strfreev (str);

	return name;
}

static void
add_system_language_entry (GtkListStore *store)
{
	GtkTreeIter iter;
	char **sys_langs;
	char *system, *text;
	int n_sys_langs;

	sys_langs = ephy_langs_get_languages ();
	n_sys_langs = g_strv_length (sys_langs);

	system = g_strjoinv (", ", sys_langs);

	text = g_strdup_printf
		(ngettext ("System language (%s)",
			   "System languages (%s)", n_sys_langs), system);

	gtk_list_store_append (store, &iter);
	gtk_list_store_set (store, &iter,
			    COL_LANG_NAME, text,
			    COL_LANG_CODE, "system",
			    -1);

	g_strfreev (sys_langs);
	g_free (system);
	g_free (text);
}

static GtkDialog *
setup_add_language_dialog (PrefsDialog *dialog)
{
	GtkWidget *ad;
	GtkWidget *add_button;
	GtkListStore *store;
	GtkTreeModel *sortmodel;
	GtkTreeView *treeview;
	GtkCellRenderer *renderer;
	GtkTreeViewColumn *column;
	GtkTreeSelection *selection;
	GtkTreeIter iter;
	int i;
	GtkBuilder *builder;

	builder = gtk_builder_new_from_resource ("/org/gnome/epiphany/prefs-lang-dialog.ui");
	ad = GTK_WIDGET (gtk_builder_get_object (builder, "add_language_dialog"));
	add_button = GTK_WIDGET (gtk_builder_get_object (builder, "add_button"));
	treeview = GTK_TREE_VIEW (gtk_builder_get_object (builder, "languages_treeview"));
	dialog->priv->add_lang_treeview = treeview;

	store = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_STRING);

	for (i = 0; i < G_N_ELEMENTS (languages); i++)
	{
		const char *code = languages[i];
		char *name;

		name = get_name_for_lang_code (dialog, code);

		gtk_list_store_append (store, &iter);
		gtk_list_store_set (store, &iter,
				    COL_LANG_NAME, name,
				    COL_LANG_CODE, code,
				    -1);
		g_free (name);
	}

	add_system_language_entry (store);

	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);

	gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (dialog)),
				     GTK_WINDOW (ad));
	gtk_window_set_modal (GTK_WINDOW (ad), TRUE);

	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);

	add_lang_dialog_selection_changed (GTK_TREE_SELECTION (selection), add_button);
	g_signal_connect (selection, "changed",
			  G_CALLBACK (add_lang_dialog_selection_changed), add_button);

	g_signal_connect (ad, "response",
			  G_CALLBACK (add_lang_dialog_response_cb), dialog);

	g_object_unref (store);
	g_object_unref (sortmodel);

	return GTK_DIALOG (ad);
}

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

		pd->priv->add_lang_dialog = setup_add_language_dialog (pd);
		gtk_window_set_transient_for (GTK_WINDOW (pd->priv->add_lang_dialog), GTK_WINDOW (pd));

		add_lang_dialog = &pd->priv->add_lang_dialog;

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

	gtk_window_present (GTK_WINDOW (pd->priv->add_lang_dialog));
}

static 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);
}

static 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);
}

static 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 (PrefsDialog *dialog)
{
	PrefsDialogPrivate *priv = dialog->priv;
	GtkListStore *store;
	GtkTreeView *treeview;
	GtkCellRenderer *renderer;
	GtkTreeViewColumn *column;
	GtkTreeSelection *selection;
	char **list = NULL;
	int i;

	priv->iso_639_table = ephy_langs_iso_639_table ();
	priv->iso_3166_table = ephy_langs_iso_3166_table ();

	g_signal_connect (priv->lang_add_button, "clicked",
			  G_CALLBACK (language_editor_add_button_clicked_cb), dialog);
	g_signal_connect (priv->lang_remove_button, "clicked",
			  G_CALLBACK (language_editor_remove_button_clicked_cb), dialog);
	g_signal_connect (priv->lang_up_button, "clicked",
			  G_CALLBACK (language_editor_up_button_clicked_cb), dialog);
	g_signal_connect (priv->lang_down_button, "clicked",
			  G_CALLBACK (language_editor_down_button_clicked_cb), dialog);

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

	gtk_tree_view_set_reorderable (treeview, TRUE);
	gtk_tree_view_set_headers_visible (treeview, FALSE);

	store = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_STRING);

	priv->lang_model = GTK_TREE_MODEL (store);
	gtk_tree_view_set_model (treeview, priv->lang_model);

	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), dialog);
	g_signal_connect (G_OBJECT (selection), "changed",
			  G_CALLBACK (language_editor_selection_changed_cb), dialog);

	list = g_settings_get_strv (EPHY_SETTINGS_WEB,
				    EPHY_PREFS_WEB_LANGUAGE);

	/* Fill languages editor */
	for (i = 0; list[i]; i++)
	{
		const char *code = (const char *) list[i];

		if (strcmp (code, "system") == 0)
		{
			add_system_language_entry (store);
		}
		else if (code[0] != '\0')
		{
			char *text;

			text = get_name_for_lang_code (dialog, code);
			language_editor_add (dialog, code, text);
			g_free (text);
		}
	}
	g_object_unref (store);

	language_editor_update_buttons (dialog);
	g_strfreev (list);

	/* Lockdown if key is not writable */
	g_settings_bind_writable (EPHY_SETTINGS_WEB,
				  EPHY_PREFS_WEB_LANGUAGE,
				  priv->lang_add_button, "sensitive", FALSE);
	g_settings_bind_writable (EPHY_SETTINGS_WEB,
				  EPHY_PREFS_WEB_LANGUAGE,
				  priv->lang_remove_button, "sensitive", FALSE);
	g_settings_bind_writable (EPHY_SETTINGS_WEB,
				  EPHY_PREFS_WEB_LANGUAGE,
				  priv->lang_up_button, "sensitive", FALSE);
	g_settings_bind_writable (EPHY_SETTINGS_WEB,
				  EPHY_PREFS_WEB_LANGUAGE,
				  priv->lang_down_button, "sensitive", FALSE);
	g_settings_bind_writable (EPHY_SETTINGS_WEB,
				  EPHY_PREFS_WEB_LANGUAGE,
				  priv->lang_treeview, "sensitive", FALSE);
}

static void
download_path_changed_cb (GtkFileChooser *button)
{
	char *dir;

	dir = gtk_file_chooser_get_filename (button);
	if (dir == NULL) return;

	g_settings_set_string (EPHY_SETTINGS_STATE,
			       EPHY_PREFS_STATE_DOWNLOAD_DIR, dir);
	g_free (dir);
}

static void
create_download_path_button (PrefsDialog *dialog)
{
	GtkWidget *button;
	EphyFileChooser *fc;
	char *dir;

	dir = ephy_file_get_downloads_dir ();

	fc = ephy_file_chooser_new (_("Select a Directory"),
				    GTK_WIDGET (dialog),
				    GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER,
				    EPHY_FILE_FILTER_NONE);

	/* Unset the destroy-with-parent, since gtkfilechooserbutton doesn't
	 * expect this */
	gtk_window_set_destroy_with_parent (GTK_WINDOW (fc), FALSE);

	button = gtk_file_chooser_button_new_with_dialog (GTK_WIDGET (fc));
	gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (button), dir);
	gtk_file_chooser_button_set_width_chars (GTK_FILE_CHOOSER_BUTTON (button),
						 DOWNLOAD_BUTTON_WIDTH);
	g_signal_connect (button, "selection-changed",
			  G_CALLBACK (download_path_changed_cb), dialog);
	gtk_label_set_mnemonic_widget (GTK_LABEL (dialog->priv->download_button_label), button);
	gtk_box_pack_start (GTK_BOX (dialog->priv->download_button_hbox), button, TRUE, TRUE, 0);
	gtk_widget_show (button);

	g_settings_bind_writable (EPHY_SETTINGS_STATE,
				  EPHY_PREFS_STATE_DOWNLOAD_DIR,
				  button, "sensitive", FALSE);
	g_free (dir);
}

static void
prefs_dialog_response_cb (GtkDialog *widget,
			  int response,
			  GtkDialog *dialog)
{
	gtk_widget_destroy (GTK_WIDGET (dialog));
}

static void
clear_personal_data_button_clicked_cb (GtkWidget *button,
				       PrefsDialog *dialog)
{
	ClearDataDialog *clear_dialog;

	clear_dialog = g_object_new (EPHY_TYPE_CLEAR_DATA_DIALOG,
				     "use-header-bar", TRUE,
				     NULL);
	gtk_window_set_transient_for (GTK_WINDOW (clear_dialog), GTK_WINDOW (dialog));
	gtk_window_set_modal (GTK_WINDOW (clear_dialog), TRUE);
	gtk_window_present (GTK_WINDOW (clear_dialog));
}

static gboolean
cookies_get_mapping (GValue *value,
		     GVariant *variant,
		     gpointer user_data)
{
	const char *setting;
	const char *name;

	setting = g_variant_get_string (variant, NULL);
	name = gtk_buildable_get_name (GTK_BUILDABLE (user_data));

	if (g_strcmp0 (name, "no_third_party") == 0)
		name = "no-third-party";

	/* If the button name matches the setting, it should be active. */
	if (g_strcmp0 (name, setting) == 0)
		g_value_set_boolean (value, TRUE);

	return TRUE;
}

static GVariant *
cookies_set_mapping (const GValue *value,
		     const GVariantType *expected_type,
		     gpointer user_data)
{
	GVariant *variant = NULL;
	const char *name;

	/* Don't act unless the button has been activated (turned ON). */
	if (!g_value_get_boolean (value))
		return NULL;

	name = gtk_buildable_get_name (GTK_BUILDABLE (user_data));
	if (g_strcmp0 (name, "no_third_party") == 0)
		variant = g_variant_new_string ("no-third-party");
	else
		variant = g_variant_new_string (name);

	return variant;
}

static void
search_engine_combo_add_default_engines (GtkListStore *store)
{
	int i;
	const char *default_engines[][3] = { /* Search engine option in the preferences dialog */
					     { N_("DuckDuckGo"),
					       "https://duckduckgo.com/?q=%s&t=epiphany",
					       /* For the preferences dialog. Must exactly match the URL
					        * you chose in the gschema, but with & instead of &amp;
					        * If the match is not exact, there will be a spurious, ugly
					        * entry in the preferences combo, so please test this. */
					       N_("https://duckduckgo.com/?q=%s&t=epiphany")},
					     /* Search engine option in the preferences dialog */
					     { N_("Google"),
					       "https://google.com/search?q=%s",
					       /* For the preferences dialog. Consider a regional variant, like google.co.uk */
					       N_("https://google.com/search?q=%s")},
					     /* Search engine option in the preferences dialog */
					     { N_("Bing"),
					       "https://www.bing.com/search?q=%s",
					       /* For the preferences dialog. Consider a regional variant, like uk.bing.com */
					       N_("https://www.bing.com/search?q=%s")} };

	for (i = 0; i < G_N_ELEMENTS (default_engines); ++i)
	{
		gtk_list_store_insert_with_values (store, NULL, -1,
						   SEARCH_ENGINE_COL_NAME,
						   _(default_engines[i][0]),
						   SEARCH_ENGINE_COL_STOCK_URL,
						   default_engines[i][1],
						   SEARCH_ENGINE_COL_URL,
						   _(default_engines[i][2]),
						   -1);
	}
}

static void
search_engine_combo_add_smart_bookmarks (GtkListStore *store)
{
	int i;
	EphyBookmarks *bookmarks;
	EphyNode *smart_bookmarks_parent_node;
	GPtrArray *smart_bookmarks;

	bookmarks = ephy_shell_get_bookmarks (ephy_shell_get_default ());
	smart_bookmarks_parent_node = ephy_bookmarks_get_smart_bookmarks (bookmarks);
	smart_bookmarks = ephy_node_get_children (smart_bookmarks_parent_node);

	if (!smart_bookmarks)
		return;

	for (i = 0; i < smart_bookmarks->len; ++i)
	{
		EphyNode *bookmark;
		const char *bookmark_name;
		const char *bookmark_url;

		bookmark = g_ptr_array_index (smart_bookmarks, i);
		bookmark_name = ephy_node_get_property_string (bookmark, EPHY_NODE_BMK_PROP_TITLE);
		bookmark_url = ephy_node_get_property_string (bookmark, EPHY_NODE_BMK_PROP_LOCATION);

		if (!bookmark_name || !bookmark_url)
			continue;

		if (strcmp (bookmark_name, DEFAULT_SMART_BOOKMARK_TEXT) == 0)
			continue;

		gtk_list_store_insert_with_values (store, NULL, -1,
						   SEARCH_ENGINE_COL_NAME, bookmark_name,
						   SEARCH_ENGINE_COL_STOCK_URL, bookmark_url,
						   SEARCH_ENGINE_COL_URL, bookmark_url,
						   -1);
	}
}

/* Has the user manually set the engine to something not in the combo?
 * If so, add that URL as an extra item in the combo. */
static void
search_engine_combo_add_current_engine (GtkListStore *store)
{
	GtkTreeIter iter;
	char *original_url;
	gboolean in_combo = FALSE;
	gboolean has_next = FALSE;

	original_url = g_settings_get_string (EPHY_SETTINGS_MAIN,
					      EPHY_PREFS_KEYWORD_SEARCH_URL);
	if (!original_url)
		return;

	has_next = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (store), &iter);

	while (!in_combo && has_next)
	{
		char *stock_url, *url;

		gtk_tree_model_get (GTK_TREE_MODEL (store), &iter,
				    SEARCH_ENGINE_COL_STOCK_URL, &stock_url,
				    SEARCH_ENGINE_COL_URL, &url, -1);

		if (strcmp (original_url, stock_url) == 0 ||
		    strcmp (original_url, url) == 0)
			in_combo = TRUE;

		g_free (stock_url);
		g_free (url);
		has_next = gtk_tree_model_iter_next (GTK_TREE_MODEL (store), &iter);
	}

	if (!in_combo)
		gtk_list_store_insert_with_values (store, NULL, -1,
						   SEARCH_ENGINE_COL_NAME, original_url,
						   SEARCH_ENGINE_COL_STOCK_URL, original_url,
						   SEARCH_ENGINE_COL_URL, original_url,
						   -1);

	g_free (original_url);
}

static void
create_search_engine_combo (GtkComboBox *combo)
{
	GtkCellRenderer *renderer;
	GtkListStore *store;

	store = GTK_LIST_STORE (gtk_combo_box_get_model (combo));

	search_engine_combo_add_default_engines (store);
	search_engine_combo_add_smart_bookmarks (store);
	search_engine_combo_add_current_engine (store);

	gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (store), SEARCH_ENGINE_COL_NAME,
					      GTK_SORT_ASCENDING);
	gtk_combo_box_set_model (combo, GTK_TREE_MODEL (store));

	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", SEARCH_ENGINE_COL_NAME,
					NULL);

	g_settings_bind_with_mapping (EPHY_SETTINGS_MAIN,
				      EPHY_PREFS_KEYWORD_SEARCH_URL,
				      combo, "active",
				      G_SETTINGS_BIND_DEFAULT,
				      combo_get_mapping,
				      combo_set_mapping,
				      combo,
				      NULL);
}

static void
setup_general_page (PrefsDialog *dialog)
{
	PrefsDialogPrivate *priv = dialog->priv;
	GSettings *settings;
	GSettings *web_settings;

	settings = ephy_settings_get (EPHY_PREFS_SCHEMA);
	web_settings = ephy_settings_get (EPHY_PREFS_WEB_SCHEMA);

	g_settings_bind (settings,
			 EPHY_PREFS_AUTO_DOWNLOADS,
			 priv->automatic_downloads_checkbutton,
			 "active",
			 G_SETTINGS_BIND_DEFAULT);
	g_settings_bind (web_settings,
			 EPHY_PREFS_WEB_ENABLE_POPUPS,
			 priv->popups_allow_checkbutton,
			 "active",
			 G_SETTINGS_BIND_DEFAULT);
	g_settings_bind (web_settings,
			 EPHY_PREFS_WEB_ENABLE_ADBLOCK,
			 priv->adblock_allow_checkbutton,
			 "active",
			 G_SETTINGS_BIND_INVERT_BOOLEAN);
	g_settings_bind (web_settings,
			 EPHY_PREFS_WEB_ENABLE_PLUGINS,
			 priv->enable_plugins_checkbutton,
			 "active",
			 G_SETTINGS_BIND_DEFAULT);

	create_download_path_button (dialog);
	create_search_engine_combo (GTK_COMBO_BOX (dialog->priv->search_engine_combo));
}

static void
setup_fonts_page (PrefsDialog *dialog)
{
	PrefsDialogPrivate *priv = dialog->priv;
	GSettings *web_settings;

	web_settings = ephy_settings_get (EPHY_PREFS_WEB_SCHEMA);

	g_settings_bind (web_settings,
			 EPHY_PREFS_WEB_USE_GNOME_FONTS,
			 priv->use_gnome_fonts_checkbutton,
			 "active",
			 G_SETTINGS_BIND_DEFAULT);
	g_settings_bind (web_settings,
			 EPHY_PREFS_WEB_USE_GNOME_FONTS,
			 priv->custom_fonts_table,
			 "sensitive",
			 G_SETTINGS_BIND_GET | G_SETTINGS_BIND_INVERT_BOOLEAN);
	g_settings_bind (web_settings,
			 EPHY_PREFS_WEB_SANS_SERIF_FONT,
			 priv->sans_fontbutton,
			 "font-name",
			 G_SETTINGS_BIND_DEFAULT);
	g_settings_bind (web_settings,
			 EPHY_PREFS_WEB_SERIF_FONT,
			 priv->serif_fontbutton,
			 "font-name",
			 G_SETTINGS_BIND_DEFAULT);
	g_settings_bind (web_settings,
			 EPHY_PREFS_WEB_MONOSPACE_FONT,
			 priv->mono_fontbutton,
			 "font-name",
			 G_SETTINGS_BIND_DEFAULT);

	g_settings_bind (web_settings,
			 EPHY_PREFS_WEB_ENABLE_USER_CSS,
			 priv->css_checkbox,
			 "active",
			 G_SETTINGS_BIND_DEFAULT);
	g_settings_bind (web_settings,
			 EPHY_PREFS_WEB_ENABLE_USER_CSS,
			 priv->css_edit_button,
			 "sensitive",
			 G_SETTINGS_BIND_GET);
	g_signal_connect (priv->css_edit_button,
			  "clicked",
			  G_CALLBACK (css_edit_button_clicked_cb),
			  dialog);
}

static void
setup_privacy_page (PrefsDialog *dialog)
{
	PrefsDialogPrivate *priv = dialog->priv;
	GSettings *settings;
	GSettings *web_settings;

	settings = ephy_settings_get (EPHY_PREFS_SCHEMA);
	web_settings = ephy_settings_get (EPHY_PREFS_WEB_SCHEMA);

	g_settings_bind_with_mapping (web_settings,
				      EPHY_PREFS_WEB_COOKIES_POLICY,
				      priv->always,
				      "active",
				      G_SETTINGS_BIND_DEFAULT,
				      cookies_get_mapping,
				      cookies_set_mapping,
				      priv->always,
				      NULL);
	g_settings_bind_with_mapping (web_settings,
				      EPHY_PREFS_WEB_COOKIES_POLICY,
				      priv->no_third_party,
				      "active",
				      G_SETTINGS_BIND_DEFAULT,
				      cookies_get_mapping,
				      cookies_set_mapping,
				      priv->no_third_party,
				      NULL);
	g_settings_bind_with_mapping (web_settings,
				      EPHY_PREFS_WEB_COOKIES_POLICY,
				      priv->never,
				      "active",
				      G_SETTINGS_BIND_DEFAULT,
				      cookies_get_mapping,
				      cookies_set_mapping,
				      priv->never,
				      NULL);
	g_settings_bind (settings,
			 EPHY_PREFS_REMEMBER_PASSWORDS,
			 priv->remember_passwords_checkbutton,
			 "active",
			 G_SETTINGS_BIND_DEFAULT);
	g_settings_bind (web_settings,
			 EPHY_PREFS_WEB_DO_NOT_TRACK,
			 priv->do_not_track_checkbutton,
			 "active",
			 G_SETTINGS_BIND_DEFAULT);

	g_signal_connect (priv->clear_personal_data_button,
			  "clicked",
			  G_CALLBACK (clear_personal_data_button_clicked_cb),
			  dialog);
}

static void
setup_language_page (PrefsDialog *dialog)
{
	PrefsDialogPrivate *priv = dialog->priv;
	GSettings *web_settings;
	EphyEncodings *encodings;

	web_settings = ephy_settings_get (EPHY_PREFS_WEB_SCHEMA);

	g_settings_bind (web_settings,
			 EPHY_PREFS_WEB_ENABLE_SPELL_CHECKING,
			 priv->enable_spell_checking_checkbutton,
			 "active",
			 G_SETTINGS_BIND_DEFAULT);

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

	create_node_combo (dialog, encodings, "ISO-8859-1");

	create_language_section (dialog);
}

static void
prefs_dialog_init (PrefsDialog *dialog)
{
	dialog->priv = prefs_dialog_get_instance_private (dialog);
	gtk_widget_init_template (GTK_WIDGET (dialog));

	setup_general_page (dialog);
	setup_fonts_page (dialog);
	setup_privacy_page (dialog);
	setup_language_page (dialog);

	ephy_gui_ensure_window_group (GTK_WINDOW (dialog));
	g_signal_connect (dialog, "response",
			  G_CALLBACK (prefs_dialog_response_cb), dialog);
}