preferences.c

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/*
 * Copyright 2012 Vincent Sanders <vince@netsurf-browser.org>
 *
 * This file is part of NetSurf, http://www.netsurf-browser.org/
 *
 * NetSurf 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; version 2 of the License.
 *
 * NetSurf 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 <stdlib.h>
#include <stdint.h>
#include <math.h>
#include <string.h>
 
#include "utils/messages.h"
#include "utils/nsoption.h"
#include "utils/file.h"
#include "utils/log.h"
#include "utils/nsurl.h"
#include "netsurf/browser_window.h"
#include "desktop/searchweb.h"
 
#include "gtk/compat.h"
#include "gtk/toolbar_items.h"
#include "gtk/window.h"
#include "gtk/gui.h"
#include "gtk/scaffolding.h"
#include "gtk/resources.h"
#include "gtk/preferences.h"
 
/* private prefs */
struct ppref {
        /** dialog handle created when window first accessed */
        GObject *dialog;
 
        struct browser_window *bw;
 
        /* widgets which are accessed from outside their own signal handlers */
        GtkEntry *entryHomePageURL;
        GtkEntry *entryProxyHost;
        GtkEntry *entryProxyUser;
        GtkEntry *entryProxyPassword;
        GtkEntry *entryProxyNoproxy;
        GtkSpinButton *spinProxyPort;
 
        /* dynamic list stores */
        GtkListStore *content_language;
        GtkListStore *search_providers;
};
 
static struct ppref ppref;
 
 
/* Set netsurf option based on toggle button state
 *
 * This works for any widget which subclasses togglebutton (checkbox,
 * radiobutton etc.)
 */
#define TOGGLEBUTTON_SIGNALS(WIDGET, OPTION)                            \
G_MODULE_EXPORT void                                                    \
nsgtk_preferences_##WIDGET##_toggled(GtkToggleButton *togglebutton,     \
                                     struct ppref *priv);               \
G_MODULE_EXPORT void                                                    \
nsgtk_preferences_##WIDGET##_toggled(GtkToggleButton *togglebutton,     \
                                     struct ppref *priv)                \
{                                                                       \
        nsoption_set_bool(OPTION,                                       \
                          gtk_toggle_button_get_active(togglebutton));  \
}                                                                       \
                                                                        \
G_MODULE_EXPORT void                                                    \
nsgtk_preferences_##WIDGET##_realize(GtkWidget *widget,                 \
                                     struct ppref *priv);               \
G_MODULE_EXPORT void                                                    \
nsgtk_preferences_##WIDGET##_realize(GtkWidget *widget,                 \
                                     struct ppref *priv)                \
{                                                                       \
        gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(widget),         \
                                     nsoption_bool(OPTION));            \
}
 
#define SPINBUTTON_SIGNALS(WIDGET, OPTION, MULTIPLIER)                  \
G_MODULE_EXPORT void                                                    \
nsgtk_preferences_##WIDGET##_valuechanged(GtkSpinButton *spinbutton,    \
                                          struct ppref *priv);          \
G_MODULE_EXPORT void                                                    \
nsgtk_preferences_##WIDGET##_valuechanged(GtkSpinButton *spinbutton,    \
                                          struct ppref *priv)           \
{                                                                       \
        nsoption_set_int(OPTION,                                        \
                round(gtk_spin_button_get_value(spinbutton) * MULTIPLIER)); \
}                                                                       \
                                                                        \
G_MODULE_EXPORT void                                                    \
nsgtk_preferences_##WIDGET##_realize(GtkWidget *widget, struct ppref *priv); \
G_MODULE_EXPORT void                                                    \
nsgtk_preferences_##WIDGET##_realize(GtkWidget *widget, struct ppref *priv) \
{                                                                       \
        gtk_spin_button_set_value(GTK_SPIN_BUTTON(widget),              \
                ((gdouble)nsoption_int(OPTION)) / MULTIPLIER);          \
}
 
#define SPINBUTTON_UINT_SIGNALS(WIDGET, OPTION, MULTIPLIER)             \
G_MODULE_EXPORT void                                                    \
nsgtk_preferences_##WIDGET##_valuechanged(GtkSpinButton *spinbutton,    \
                                          struct ppref *priv);          \
G_MODULE_EXPORT void                                                    \
nsgtk_preferences_##WIDGET##_valuechanged(GtkSpinButton *spinbutton,    \
                                          struct ppref *priv)           \
{                                                                       \
        nsoption_set_uint(OPTION,                                       \
                round(gtk_spin_button_get_value(spinbutton) * MULTIPLIER)); \
}                                                                       \
                                                                        \
G_MODULE_EXPORT void                                                    \
nsgtk_preferences_##WIDGET##_realize(GtkWidget *widget, struct ppref *priv); \
G_MODULE_EXPORT void                                                    \
nsgtk_preferences_##WIDGET##_realize(GtkWidget *widget, struct ppref *priv) \
{                                                                       \
        gtk_spin_button_set_value(GTK_SPIN_BUTTON(widget),              \
                ((gdouble)nsoption_uint(OPTION)) / MULTIPLIER);         \
}
 
#define ENTRY_SIGNALS(WIDGET, OPTION)                                   \
G_MODULE_EXPORT void                                                    \
nsgtk_preferences_##WIDGET##_changed(GtkEditable *editable, struct ppref *priv); \
G_MODULE_EXPORT void                                                    \
nsgtk_preferences_##WIDGET##_changed(GtkEditable *editable, struct ppref *priv)\
{                                                                       \
        nsoption_set_charp(OPTION,                                      \
                strdup(gtk_entry_get_text(GTK_ENTRY(editable))));       \
}                                                                       \
                                                                        \
G_MODULE_EXPORT void                                                    \
nsgtk_preferences_##WIDGET##_realize(GtkWidget *widget, struct ppref *priv); \
G_MODULE_EXPORT void                                                    \
nsgtk_preferences_##WIDGET##_realize(GtkWidget *widget, struct ppref *priv) \
{                                                                       \
        const char *OPTION;                                             \
        OPTION = nsoption_charp(OPTION);                                \
        if (OPTION != NULL) {                                           \
                gtk_entry_set_text(GTK_ENTRY(widget), OPTION);          \
        }                                                               \
}
 
/* GTK module requires these to be exported symbols so these all need
 * forward declaring to avoid warnings
 */
G_MODULE_EXPORT void nsgtk_preferences_comboProxyType_changed(GtkComboBox *combo, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_comboProxyType_realize(GtkWidget *widget, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_comboboxLoadImages_changed(GtkComboBox *combo, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_comboboxLoadImages_realize(GtkWidget *widget, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_comboDefault_changed(GtkComboBox *combo, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_comboDefault_realize(GtkWidget *widget, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_fontPreview_clicked(GtkButton *button, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_comboboxLanguage_changed(GtkComboBox *combo, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_comboboxLanguage_realize(GtkWidget *widget, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_checkShowSingleTab_toggled(GtkToggleButton *togglebutton, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_checkShowSingleTab_realize(GtkWidget *widget, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_comboTabPosition_changed(GtkComboBox *widget, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_comboTabPosition_realize(GtkWidget *widget, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_comboDeveloperView_changed(GtkComboBox *widget, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_comboDeveloperView_realize(GtkWidget *widget, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_comboButtonType_changed(GtkComboBox *widget, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_comboButtonType_realize(GtkWidget *widget, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_setCurrentPage_clicked(GtkButton *button, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_setDefaultPage_clicked(GtkButton *button, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_comboSearch_changed(GtkComboBox *widget, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_comboSearch_realize(GtkWidget *widget, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_fileChooserDownloads_selectionchanged(GtkFileChooser *chooser, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_fileChooserDownloads_realize(GtkWidget *widget, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_dialogPreferences_response(GtkDialog *dlg, gint resid);
G_MODULE_EXPORT gboolean nsgtk_preferences_dialogPreferences_deleteevent(GtkDialog *dlg, struct ppref *priv);
G_MODULE_EXPORT void nsgtk_preferences_dialogPreferences_destroy(GtkDialog *dlg, struct ppref *priv);
 
 
/********* PDF **********/
 
/* Appearance */
 
/* no images in output */
TOGGLEBUTTON_SIGNALS(checkSuppressImages, suppress_images)
 
/* no background images */
TOGGLEBUTTON_SIGNALS(checkRemoveBackgrounds, remove_backgrounds)
 
/* scale to fit page */
TOGGLEBUTTON_SIGNALS(checkFitPage, enable_loosening)
 
/* port */
SPINBUTTON_SIGNALS(spinExportScale, export_scale, 1.0)
 
/* Margins */
SPINBUTTON_SIGNALS(spinMarginTop, margin_top, 1.0)
SPINBUTTON_SIGNALS(spinMarginBottom, margin_bottom, 1.0)
SPINBUTTON_SIGNALS(spinMarginLeft, margin_left, 1.0)
SPINBUTTON_SIGNALS(spinMarginRight, margin_right, 1.0)
 
 
/* Generation */
 
/* output is compressed */
TOGGLEBUTTON_SIGNALS(checkCompressPDF, enable_PDF_compression)
 
/* output has a password */
TOGGLEBUTTON_SIGNALS(checkPasswordPDF, enable_PDF_password)
 
/********* Network **********/
 
/* HTTP proxy */
static void set_proxy_widgets_sensitivity(int proxyval, struct ppref *priv)
{
        gboolean host;
        gboolean port;
        gboolean user;
        gboolean pass;
        gboolean noproxy;
 
        switch (proxyval) {
        case 0: /* no proxy */
                host = FALSE;
                port = FALSE;
                user = FALSE;
                pass = FALSE;
                noproxy = FALSE;
                break;
 
        case 1: /* proxy with no auth */
                host = TRUE;
                port = TRUE;
                user = FALSE;
                pass = FALSE;
                noproxy = TRUE;
                break;
 
        case 2: /* proxy with basic auth */
                host = TRUE;
                port = TRUE;
                user = TRUE;
                pass = TRUE;
                noproxy = TRUE;
                break;
 
        case 3: /* proxy with ntlm auth */
                host = TRUE;
                port = TRUE;
                user = TRUE;
                pass = TRUE;
                noproxy = TRUE;
                break;
 
        case 4: /* system proxy */
                host = FALSE;
                port = FALSE;
                user = FALSE;
                pass = FALSE;
                noproxy = FALSE;
                break;
 
        default:
                return;
        }
 
        gtk_widget_set_sensitive(GTK_WIDGET(priv->entryProxyHost), host);
        gtk_widget_set_sensitive(GTK_WIDGET(priv->spinProxyPort), port);
        gtk_widget_set_sensitive(GTK_WIDGET(priv->entryProxyUser), user);
        gtk_widget_set_sensitive(GTK_WIDGET(priv->entryProxyPassword), pass);
        gtk_widget_set_sensitive(GTK_WIDGET(priv->entryProxyNoproxy), noproxy);
 
}
 
G_MODULE_EXPORT void
nsgtk_preferences_comboProxyType_changed(GtkComboBox *combo, struct ppref *priv)
{
        int proxy_sel;
        proxy_sel = gtk_combo_box_get_active(combo);
 
        switch (proxy_sel) {
        case 0: /* no proxy */
                nsoption_set_bool(http_proxy, false);
                break;
 
        case 1: /* proxy with no auth */
                nsoption_set_bool(http_proxy, true);
                nsoption_set_int(http_proxy_auth, OPTION_HTTP_PROXY_AUTH_NONE);
                break;
 
        case 2: /* proxy with basic auth */
                nsoption_set_bool(http_proxy, true);
                nsoption_set_int(http_proxy_auth, OPTION_HTTP_PROXY_AUTH_BASIC);
                break;
 
        case 3: /* proxy with ntlm auth */
                nsoption_set_bool(http_proxy, true);
                nsoption_set_int(http_proxy_auth, OPTION_HTTP_PROXY_AUTH_NTLM);
                break;
 
        case 4: /* system proxy */
                nsoption_set_bool(http_proxy, true);
                nsoption_set_int(http_proxy_auth, OPTION_HTTP_PROXY_AUTH_NONE);
                break;
        }
 
        set_proxy_widgets_sensitivity(proxy_sel, priv);
}
 
G_MODULE_EXPORT void
nsgtk_preferences_comboProxyType_realize(GtkWidget *widget, struct ppref *priv)
{
        int proxytype = 0; /* no proxy by default */
 
        if (nsoption_bool(http_proxy) == true) {
                /* proxy type combo box starts with disabled, to allow
                 * for this the http_proxy option needs combining with
                 * the http_proxy_auth option
                 */
                proxytype = nsoption_int(http_proxy_auth) + 1;
                if (nsoption_charp(http_proxy_host) == NULL) {
                        /* set to use a proxy without a host, turn proxy off */
                        proxytype = 0;
                } else if (((proxytype == 2) ||
                            (proxytype == 3)) &&
                           ((nsoption_charp(http_proxy_auth_user) == NULL) ||
                            (nsoption_charp(http_proxy_auth_pass) == NULL))) {
                        /* authentication selected with empty credentials, turn proxy off */
                        proxytype = 0;
                }
        }
        gtk_combo_box_set_active(GTK_COMBO_BOX(widget), proxytype);
 
        set_proxy_widgets_sensitivity(proxytype, priv);
}
 
/* host */
ENTRY_SIGNALS(entryProxyHost, http_proxy_host)
 
/* port */
SPINBUTTON_SIGNALS(spinProxyPort, http_proxy_port, 1.0)
 
/* user */
ENTRY_SIGNALS(entryProxyUser, http_proxy_auth_user)
 
/* password */
ENTRY_SIGNALS(entryProxyPassword, http_proxy_auth_pass)
 
/* no proxy */
ENTRY_SIGNALS(entryProxyNoproxy, http_proxy_noproxy)
 
/* Fetching */
 
/* maximum fetchers */
SPINBUTTON_SIGNALS(spinMaxFetchers, max_fetchers, 1.0)
 
/* fetches per host */
SPINBUTTON_SIGNALS(spinFetchesPerHost, max_fetchers_per_host, 1.0)
 
/* cached connections */
SPINBUTTON_SIGNALS(spinCachedConnections, max_cached_fetch_handles, 1.0)
 
 
/********* Privacy **********/
 
/* General */
 
/* enable referral submission */
TOGGLEBUTTON_SIGNALS(checkSendReferer, send_referer)
 
/* send do not track */
TOGGLEBUTTON_SIGNALS(checkSendDNT, do_not_track)
 
/* History */
 
/* local history shows url tooltips */
TOGGLEBUTTON_SIGNALS(checkHoverURLs, hover_urls)
 
/* remember browsing history */
SPINBUTTON_SIGNALS(spinHistoryAge, history_age, 1.0)
 
/* Cache */
 
/* memory cache size */
SPINBUTTON_SIGNALS(spinMemoryCacheSize, memory_cache_size, (1024*1024))
 
/* disc cache size */
SPINBUTTON_UINT_SIGNALS(spinDiscCacheSize, disc_cache_size, (1024*1024))
 
 
/* disc cache age */
SPINBUTTON_SIGNALS(spinDiscCacheAge, disc_cache_age, 1.0)
 
 
/********* Content **********/
 
/* Control */
 
 
/* prevent popups */
TOGGLEBUTTON_SIGNALS(checkDisablePopups, disable_popups)
 
/* hide adverts */
TOGGLEBUTTON_SIGNALS(checkHideAdverts, block_advertisements)
 
/* enable javascript */
TOGGLEBUTTON_SIGNALS(checkEnableJavascript, enable_javascript)
 
/* load and display of images */
G_MODULE_EXPORT void
nsgtk_preferences_comboboxLoadImages_changed(GtkComboBox *combo,
                                             struct ppref *priv)
{
        int img_sel;
        /* get the row number for the selection */
        img_sel = gtk_combo_box_get_active(combo);
        switch (img_sel) {
        case 0:
                /* background and foreground */
                nsoption_set_bool(foreground_images, true);
                nsoption_set_bool(background_images, true);
                break;
 
        case 1:
                /* foreground only */
                nsoption_set_bool(foreground_images, true);
                nsoption_set_bool(background_images, false);
                break;
 
        case 2:
                /* background only */
                nsoption_set_bool(foreground_images, false);
                nsoption_set_bool(background_images, true);
                break;
 
        case 3:
                /* no images */
                nsoption_set_bool(foreground_images, false);
                nsoption_set_bool(background_images, false);
                break;
        }
}
 
G_MODULE_EXPORT void
nsgtk_preferences_comboboxLoadImages_realize(GtkWidget *widget,
                                           struct ppref *priv)
{
        if (nsoption_bool(foreground_images)) {
                if (nsoption_bool(background_images)) {
                        /* background and foreground */
                        gtk_combo_box_set_active(GTK_COMBO_BOX(widget), 0);
                } else {
                        /* foreground only */
                        gtk_combo_box_set_active(GTK_COMBO_BOX(widget), 1);
                }
        } else {
                if (nsoption_bool(background_images)) {
                        /* background only */
                        gtk_combo_box_set_active(GTK_COMBO_BOX(widget), 2);
                } else {
                        /* no images */
                        gtk_combo_box_set_active(GTK_COMBO_BOX(widget), 3);
                }
        }
}
 
/* Animation */
 
/* enable animation */
TOGGLEBUTTON_SIGNALS(checkEnableAnimations, animate_images)
 
/* Fonts */
 
/* default font */
G_MODULE_EXPORT void
nsgtk_preferences_comboDefault_changed(GtkComboBox *combo, struct ppref *priv)
{
        int font_sel;
        /* get the row number for the selection */
        font_sel = gtk_combo_box_get_active(combo);
        if ((font_sel >= 0) && (font_sel <= 4)) {
                nsoption_set_int(font_default, font_sel);
        }
}
 
G_MODULE_EXPORT void
nsgtk_preferences_comboDefault_realize(GtkWidget *widget, struct ppref *priv)
{
        gtk_combo_box_set_active(GTK_COMBO_BOX(widget),
                                 nsoption_int(font_default));
}
 
/* default font size */
SPINBUTTON_SIGNALS(spinDefaultSize, font_size, 10.0)
 
/* preview - actually reflow all views */
G_MODULE_EXPORT void
nsgtk_preferences_fontPreview_clicked(GtkButton *button, struct ppref *priv)
{
        nsgtk_window_update_all();
}
 
 
/* Language */
 
/* accept language */
G_MODULE_EXPORT void
nsgtk_preferences_comboboxLanguage_changed(GtkComboBox *combo,
                                           struct ppref *priv)
{
        gchar *lang = NULL;
        GtkTreeIter iter;
        GtkTreeModel *model;
 
        /* Obtain currently selected item from combo box.
         * If nothing is selected, do nothing.
         */
        if (gtk_combo_box_get_active_iter(combo, &iter)) {
                /* Obtain data model from combo box. */
                model = gtk_combo_box_get_model(combo);
 
                /* Obtain string from model. */
                gtk_tree_model_get(model, &iter, 0, &lang, -1);
        }
 
        if (lang != NULL) {
                nsoption_set_charp(accept_language, strdup(lang));
                g_free(lang);
        }
}
 
/**
 * populate language combo from data
 */
static nserror
comboboxLanguage_add_from_data(GtkListStore *liststore,
                               GtkComboBox *combobox,
                               const char *accept_language,
                               const uint8_t *data,
                               size_t data_size)
{
        int active_language = -1;
        GtkTreeIter iter;
        int combo_row_count = 0;
        const uint8_t *s;
        const uint8_t *nl;
        char buf[50];
        int bufi = 0;
 
        gtk_list_store_clear(liststore);
        s = data;
 
        while (s < (data + data_size)) {
                /* find nl and copy buffer */
                for (nl = s; nl < data + data_size; nl++) {
                        if ((*nl == '\n') || (bufi == (sizeof(buf) - 2))) {
                                buf[bufi] = 0; /* null terminate */
                                break;
                        }
                        buf[bufi++] = *nl;
                }
                if (bufi > 0) {
                        gtk_list_store_append(liststore, &iter);
                        gtk_list_store_set(liststore, &iter, 0, buf, -1 );
 
                        if (strcmp(buf, accept_language) == 0) {
                                active_language = combo_row_count;
                        }
 
                        combo_row_count++;
                }
                bufi = 0;
                s = nl + 1; /* skip newline */
        }
 
        /* if configured language was not in list, add it */
        if (active_language == -1) {
                gtk_list_store_append(liststore, &iter);
                gtk_list_store_set(liststore, &iter, 0, accept_language, -1);
                active_language = combo_row_count;
        }
 
        gtk_combo_box_set_active(combobox, active_language);
 
        return NSERROR_OK;
}
 
/**
 * populate language combo from file
 */
static nserror
comboboxLanguage_add_from_file(GtkListStore *liststore,
                               GtkComboBox *combobox,
                               const char *accept_language,
                               const char *file_location)
{
        int active_language = -1;
        GtkTreeIter iter;
        int combo_row_count = 0;
        FILE *fp;
        char buf[50];
 
        fp = fopen(file_location, "r");
        if (fp == NULL) {
                return NSERROR_NOT_FOUND;
        }
 
        gtk_list_store_clear(liststore);
 
        NSLOG(netsurf, INFO, "Used %s for languages", file_location);
        while (fgets(buf, sizeof(buf), fp)) {
                /* Ignore blank lines */
                if (buf[0] == '\0')
                        continue;
 
                /* Remove trailing \n */
                buf[strlen(buf) - 1] = '\0';
 
                gtk_list_store_append(liststore, &iter);
                gtk_list_store_set(liststore, &iter, 0, buf, -1 );
 
                if (strcmp(buf, accept_language) == 0) {
                        active_language = combo_row_count;
                }
 
                combo_row_count++;
        }
 
        /* if configured language was not in list, add it */
        if (active_language == -1) {
                gtk_list_store_append(liststore, &iter);
                gtk_list_store_set(liststore, &iter, 0, accept_language, -1);
                active_language = combo_row_count;
        }
 
        fclose(fp);
 
        gtk_combo_box_set_active(combobox, active_language);
 
        return NSERROR_OK;
}
 
/**
 * Fill content language list store.
 */
G_MODULE_EXPORT void
nsgtk_preferences_comboboxLanguage_realize(GtkWidget *widget,
                                           struct ppref *priv)
{
        nserror res;
        const uint8_t *data;
        size_t data_size;
        const char *languages_file;
        const char *accept_language;
 
        if (priv->content_language == NULL) {
                NSLOG(netsurf, INFO, "content language list store unavailable");
                return;
        }
 
        /* get current accept language */
        accept_language = nsoption_charp(accept_language);
        if (accept_language == NULL) {
                accept_language = "en";
        }
 
        /* attempt to read languages from inline resource */
        res = nsgtk_data_from_resname("languages", &data, &data_size);
        if (res == NSERROR_OK) {
                res = comboboxLanguage_add_from_data(priv->content_language,
                                                     GTK_COMBO_BOX(widget),
                                                     accept_language,
                                                     data,
                                                     data_size);
        } else {
                /* attempt to read languages from file */
                res = nsgtk_path_from_resname("languages", &languages_file);
                if (res == NSERROR_OK) {
                        res = comboboxLanguage_add_from_file(priv->content_language,
                                        GTK_COMBO_BOX(widget),
                                        accept_language,
                                        languages_file);
                }
        }
        if (res != NSERROR_OK) {
                NSLOG(netsurf, INFO, "error populatiung languages combo");
        }
}
 
 
/********* Apperance **********/
 
/* Tabs */
 
/* always show tab bar */
G_MODULE_EXPORT void
nsgtk_preferences_checkShowSingleTab_toggled(GtkToggleButton *togglebutton,
                                             struct ppref *priv)
{
        nsoption_set_bool(show_single_tab,
                          gtk_toggle_button_get_active(togglebutton));
        nsgtk_window_update_all();
}
 
G_MODULE_EXPORT void
nsgtk_preferences_checkShowSingleTab_realize(GtkWidget *widget,
                                     struct ppref *priv)
{
        gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(widget),
                                     nsoption_bool(show_single_tab));
}
 
/* switch to newly opened tabs immediately */
TOGGLEBUTTON_SIGNALS(checkForegroundNew, foreground_new)
 
/* newly opened tabs are blank */
TOGGLEBUTTON_SIGNALS(checkNewBlank, new_blank)
 
/* tab position */
G_MODULE_EXPORT void
nsgtk_preferences_comboTabPosition_changed(GtkComboBox *widget,
                                           struct ppref *priv)
{
        /* set the option */
        nsoption_set_int(position_tab, gtk_combo_box_get_active(widget));
 
        /* update all windows */
        nsgtk_window_update_all();
}
 
G_MODULE_EXPORT void
nsgtk_preferences_comboTabPosition_realize(GtkWidget *widget,
                                           struct ppref *priv)
{
        gtk_combo_box_set_active(GTK_COMBO_BOX(widget),
                                 nsoption_int(position_tab));
}
 
/* Tools */
 
/* developer view opening */
G_MODULE_EXPORT void
nsgtk_preferences_comboDeveloperView_changed(GtkComboBox *widget,
                                           struct ppref *priv)
{
        /* set the option */
        nsoption_set_int(developer_view, gtk_combo_box_get_active(widget));
}
 
G_MODULE_EXPORT void
nsgtk_preferences_comboDeveloperView_realize(GtkWidget *widget,
                                           struct ppref *priv)
{
        gtk_combo_box_set_active(GTK_COMBO_BOX(widget),
                                 nsoption_int(developer_view));
}
 
 
/* URLbar */
 
/* show recently visited urls as you type */
TOGGLEBUTTON_SIGNALS(checkDisplayRecentURLs, url_suggestion)
 
/* Toolbar */
 
/* button position */
G_MODULE_EXPORT void
nsgtk_preferences_comboButtonType_changed(GtkComboBox *widget,
                                           struct ppref *priv)
{
        nsoption_set_int(button_type, gtk_combo_box_get_active(widget) + 1);
 
        /* update all windows to adopt change */
        nsgtk_window_update_all();
}
 
G_MODULE_EXPORT void
nsgtk_preferences_comboButtonType_realize(GtkWidget *widget,
                                           struct ppref *priv)
{
        gtk_combo_box_set_active(GTK_COMBO_BOX(widget),
                                 nsoption_int(button_type) - 1);
}
 
 
 
/************ Main ************/
 
/* Startup */
 
/* entry HomePageURL widget */
ENTRY_SIGNALS(entryHomePageURL, homepage_url)
 
/* put current page into homepage url */
G_MODULE_EXPORT void
nsgtk_preferences_setCurrentPage_clicked(GtkButton *button, struct ppref *priv)
{
        const gchar *url = nsurl_access(browser_window_access_url(priv->bw));
 
        if (priv->entryHomePageURL != NULL) {
                gtk_entry_set_text(GTK_ENTRY(priv->entryHomePageURL), url);
                nsoption_set_charp(homepage_url, strdup(url));
        }
}
 
/* put default page into homepage */
G_MODULE_EXPORT void
nsgtk_preferences_setDefaultPage_clicked(GtkButton *button, struct ppref *priv)
{
        const gchar *url = NETSURF_HOMEPAGE;
 
        if (priv->entryHomePageURL != NULL) {
                gtk_entry_set_text(GTK_ENTRY(priv->entryHomePageURL), url);
                nsoption_set_charp(homepage_url, strdup(url));
        }
}
 
/* Search */
 
/* Url Search widget */
TOGGLEBUTTON_SIGNALS(checkUrlSearch, search_url_bar)
 
/* provider combo */
G_MODULE_EXPORT void
nsgtk_preferences_comboSearch_changed(GtkComboBox *widget, struct ppref *priv)
{
        gboolean set;
        GtkTreeIter iter;
        GtkTreeModel* model;
        gchar* provider;
        const char* defprovider;
 
        set = gtk_combo_box_get_active_iter(GTK_COMBO_BOX(widget), &iter);
        if (!set) {
                return;
        }
 
        model = gtk_combo_box_get_model(GTK_COMBO_BOX(widget));
        gtk_tree_model_get(model, &iter, 0, &provider,  -1);
 
        /* set search provider */
        search_web_select_provider(provider);
 
        /* set to default option if the default provider is selected */
        if ((search_web_iterate_providers(-1, &defprovider) != -1) &&
            (strcmp(provider, defprovider) == 0)) {
                free(provider);
                /* use default option */
                provider = NULL;
        }
 
        /* set the option which takes owership of the provider allocation */
        nsoption_set_charp(search_web_provider, provider);
}
 
G_MODULE_EXPORT void
nsgtk_preferences_comboSearch_realize(GtkWidget *widget, struct ppref *priv)
{
        int iter;
        const char *name;
        const char *provider;
        int provider_idx = 0;
 
        if (priv->search_providers == NULL) {
                return;
        }
        gtk_list_store_clear(priv->search_providers);
 
        provider = nsoption_charp(search_web_provider);
 
        iter = search_web_iterate_providers(-1, &name);
        while (iter != -1) {
                gtk_list_store_insert_with_values(priv->search_providers,
                                                  NULL, -1,
                                                  0, name, -1);
                if ((provider != NULL) && (strcmp(name, provider) == 0)) {
                        provider_idx = iter;
                }
                iter = search_web_iterate_providers(iter, &name);
        }
 
 
        gtk_combo_box_set_active(GTK_COMBO_BOX(widget), provider_idx);
}
 
 
/* Downloads */
 
/* clear downloads */
TOGGLEBUTTON_SIGNALS(checkClearDownloads, downloads_clear)
 
/* request overwite */
TOGGLEBUTTON_SIGNALS(checkRequestOverwrite, request_overwrite)
 
/* download location
 *
 * note selection-changed is used instead of file-set as the returned
 * filename when that signal are used is incorrect. Though this signal
 * does update frequently often with the same data.
 */
G_MODULE_EXPORT void
nsgtk_preferences_fileChooserDownloads_selectionchanged(GtkFileChooser *chooser,
                                               struct ppref *priv)
{
        gchar *dir;
        dir = gtk_file_chooser_get_filename(chooser);
        nsoption_set_charp(downloads_directory, strdup(dir));
        g_free(dir);
}
 
G_MODULE_EXPORT void
nsgtk_preferences_fileChooserDownloads_realize(GtkWidget *widget,
                                               struct ppref *priv)
{
        gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(widget),
                                           nsoption_charp(downloads_directory));
}
 
 
/************* Dialog window ***********/
 
/* dialog close and destroy events */
G_MODULE_EXPORT void
nsgtk_preferences_dialogPreferences_response(GtkDialog *dlg, gint resid)
{
        char *choices = NULL;
 
        if (resid == GTK_RESPONSE_CLOSE) {
                netsurf_mkpath(&choices, NULL, 2, nsgtk_config_home, "Choices");
                if (choices != NULL) {
                        nsoption_write(choices, NULL, NULL);
                        free(choices);
                }
                gtk_widget_hide(GTK_WIDGET(dlg));
        }
}
 
G_MODULE_EXPORT gboolean
nsgtk_preferences_dialogPreferences_deleteevent(GtkDialog *dlg,
                                                struct ppref *priv)
{
        char *choices = NULL;
 
        netsurf_mkpath(&choices, NULL, 2, nsgtk_config_home, "Choices");
        if (choices != NULL) {
                nsoption_write(choices, NULL, NULL);
                free(choices);
        }
 
        gtk_widget_hide(GTK_WIDGET(dlg));
 
        /* Delt with it by hiding window, no need to destory widget by
         * default.
         */
        return TRUE;
}
 
G_MODULE_EXPORT void
nsgtk_preferences_dialogPreferences_destroy(GtkDialog *dlg, struct ppref *priv)
{
        char *choices = NULL;
 
        netsurf_mkpath(&choices, NULL, 2, nsgtk_config_home, "Choices");
        if (choices != NULL) {
                nsoption_write(choices, NULL, NULL);
                free(choices);
        }
}
 
 
/* exported interface documented in gtk/preferences.h */
GtkWidget* nsgtk_preferences(struct browser_window *bw, GtkWindow *parent)
{
        GtkBuilder *preferences_builder;
        struct ppref *priv = &ppref;
        nserror res;
 
        priv->bw = bw; /* for setting "current" page */
 
        /* memoised dialog creation */
        if (priv->dialog != NULL) {
                gtk_window_set_transient_for(GTK_WINDOW(priv->dialog), parent);
                return GTK_WIDGET(priv->dialog);
        }
 
        res = nsgtk_builder_new_from_resname("options", &preferences_builder);
        if (res != NSERROR_OK) {
                NSLOG(netsurf, INFO, "Preferences UI builder init failed");
                return NULL;
        }
 
        priv->dialog = gtk_builder_get_object(preferences_builder,
                                               "dialogPreferences");
        if (priv->dialog == NULL) {
                NSLOG(netsurf, INFO,
                      "Unable to get object for preferences dialog");
                /* release builder as were done with it */
                g_object_unref(G_OBJECT(preferences_builder));
                return NULL;
        }
 
        /* need to explicitly obtain handles for some widgets enabling
         * updates by other widget events
         */
#define GB(TYPE, NAME) GTK_##TYPE(gtk_builder_get_object(preferences_builder, #NAME))
        priv->entryHomePageURL = GB(ENTRY, entryHomePageURL);
        priv->content_language = GB(LIST_STORE, liststore_content_language);
        priv->search_providers = GB(LIST_STORE, liststore_search_provider);
        priv->entryProxyHost = GB(ENTRY, entryProxyHost);
        priv->spinProxyPort = GB(SPIN_BUTTON, spinProxyPort);
        priv->entryProxyUser = GB(ENTRY, entryProxyUser);
        priv->entryProxyPassword = GB(ENTRY, entryProxyPassword);
        priv->entryProxyNoproxy = GB(ENTRY, entryProxyNoproxy);
#undef GB
 
        /* connect all signals ready to use */
        gtk_builder_connect_signals(preferences_builder, priv);
 
        /* release builder as were done with it */
        g_object_unref(G_OBJECT(preferences_builder));
 
        /* mark dialog as transient on parent */
        gtk_window_set_transient_for(GTK_WINDOW(priv->dialog), parent);
 
        return GTK_WIDGET(priv->dialog);
}