Fixed typo.

1 files changed, 282 insertions, 282 deletions

diff --git a/src/math-window.c b/src/math-window.c
index e79f95a..5669e46 100644
--- a/src/math-window.c
+++ b/src/math-window.c
@@ -30,23 +30,23 @@ enum {
 };
 
 struct MathWindowPrivate {
-	GtkWidget* menu_bar;
-	MathEquation* equation;
-	MathDisplay* display;
-	MathButtons* buttons;
-	MathPreferencesDialog* preferences_dialog;
-	gboolean right_aligned;
-	GtkWidget* mode_basic_menu_item;
-	GtkWidget* mode_advanced_menu_item;
-	GtkWidget* mode_financial_menu_item;
-	GtkWidget* mode_programming_menu_item;
+    GtkWidget* menu_bar;
+    MathEquation* equation;
+    MathDisplay* display;
+    MathButtons* buttons;
+    MathPreferencesDialog* preferences_dialog;
+    gboolean right_aligned;
+    GtkWidget* mode_basic_menu_item;
+    GtkWidget* mode_advanced_menu_item;
+    GtkWidget* mode_financial_menu_item;
+    GtkWidget* mode_programming_menu_item;
 };
 
 G_DEFINE_TYPE(MathWindow, math_window, GTK_TYPE_WINDOW);
 
 enum {
-	QUIT,
-	LAST_SIGNAL
+    QUIT,
+    LAST_SIGNAL
 };
 
 static guint signals[LAST_SIGNAL] = {0, };
@@ -54,271 +54,271 @@ static guint signals[LAST_SIGNAL] = {0, };
 
 MathWindow* math_window_new(MathEquation* equation)
 {
-	return g_object_new(math_window_get_type(), "equation", equation, NULL);
+    return g_object_new(math_window_get_type(), "equation", equation, NULL);
 }
 
 
 GtkWidget* math_window_get_menu_bar(MathWindow* window)
 {
-	return window->priv->menu_bar;
+    return window->priv->menu_bar;
 }
 
 
 MathEquation* math_window_get_equation(MathWindow* window)
 {
-	return window->priv->equation;
+    return window->priv->equation;
 }
 
 
 MathDisplay* math_window_get_display(MathWindow* window)
 {
-	return window->priv->display;
+    return window->priv->display;
 }
 
 
 MathButtons* math_window_get_buttons(MathWindow* window)
 {
-	return window->priv->buttons;
+    return window->priv->buttons;
 }
 
 
 void math_window_critical_error(MathWindow* window, const gchar* title, const gchar* contents)
 {
-	GtkWidget* dialog;
+    GtkWidget* dialog;
 
-	dialog = gtk_message_dialog_new(NULL, 0, GTK_MESSAGE_ERROR, GTK_BUTTONS_NONE, "%s", title);
-	gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dialog), "%s", contents);
-	gtk_dialog_add_buttons(GTK_DIALOG(dialog), GTK_STOCK_QUIT, GTK_RESPONSE_ACCEPT, NULL);
+    dialog = gtk_message_dialog_new(NULL, 0, GTK_MESSAGE_ERROR, GTK_BUTTONS_NONE, "%s", title);
+    gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dialog), "%s", contents);
+    gtk_dialog_add_buttons(GTK_DIALOG(dialog), GTK_STOCK_QUIT, GTK_RESPONSE_ACCEPT, NULL);
 
-	gtk_dialog_run(GTK_DIALOG(dialog));
+    gtk_dialog_run(GTK_DIALOG(dialog));
 
-	g_signal_emit(window, signals[QUIT], 0);
+    g_signal_emit(window, signals[QUIT], 0);
 }
 
 
 static void copy_cb(GtkWidget* widget, MathWindow* window)
 {
-	math_equation_copy(window->priv->equation);
+    math_equation_copy(window->priv->equation);
 }
 
 
 static void paste_cb(GtkWidget* widget, MathWindow* window)
 {
-	math_equation_paste(window->priv->equation);
+    math_equation_paste(window->priv->equation);
 }
 
 
 static void undo_cb(GtkWidget* widget, MathWindow* window)
 {
-	math_equation_undo(window->priv->equation);
+    math_equation_undo(window->priv->equation);
 }
 
 
 static void redo_cb(GtkWidget* widget, MathWindow* window)
 {
-	math_equation_redo(window->priv->equation);
+    math_equation_redo(window->priv->equation);
 }
 
 
 static void mode_changed_cb(GtkWidget* menu, MathWindow* window)
 {
-	int mode;
+    int mode;
 
-	if (!gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(menu)))
-	{
-		return;
-	}
+    if (!gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(menu)))
+    {
+        return;
+    }
 
-	mode = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(menu), "calcmode"));
-	math_buttons_set_mode(window->priv->buttons, mode);
+    mode = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(menu), "calcmode"));
+    math_buttons_set_mode(window->priv->buttons, mode);
 }
 
 
 static void show_preferences_cb(GtkMenuItem* menu, MathWindow* window)
 {
-	if (!window->priv->preferences_dialog)
-	{
-		window->priv->preferences_dialog = math_preferences_dialog_new(window->priv->equation);
-		gtk_window_set_transient_for(GTK_WINDOW(window->priv->preferences_dialog), GTK_WINDOW(window));
-	}
+    if (!window->priv->preferences_dialog)
+    {
+        window->priv->preferences_dialog = math_preferences_dialog_new(window->priv->equation);
+        gtk_window_set_transient_for(GTK_WINDOW(window->priv->preferences_dialog), GTK_WINDOW(window));
+    }
 
-	gtk_window_present(GTK_WINDOW(window->priv->preferences_dialog));
+    gtk_window_present(GTK_WINDOW(window->priv->preferences_dialog));
 }
 
 
 static void help_cb(GtkWidget* widget, MathWindow* window)
 {
-	GdkScreen* screen;
-	GError* error = NULL;
+    GdkScreen* screen;
+    GError* error = NULL;
 
-	screen = gtk_widget_get_screen(GTK_WIDGET(window));
-	gtk_show_uri(screen, "ghelp:mate-calc", gtk_get_current_event_time(), &error);
+    screen = gtk_widget_get_screen(GTK_WIDGET(window));
+    gtk_show_uri(screen, "ghelp:mate-calc", gtk_get_current_event_time(), &error);
 
-	if (error != NULL)
-	{
-		GtkWidget* d;
-		/* Translators: Error message displayed when unable to launch help browser */
-		const char* message = _("Unable to open help file");
+    if (error != NULL)
+    {
+        GtkWidget* d;
+        /* Translators: Error message displayed when unable to launch help browser */
+        const char* message = _("Unable to open help file");
 
-		d = gtk_message_dialog_new(GTK_WINDOW(window), GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "%s", message);
-		gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(d), "%s", error->message);
-		g_signal_connect(d, "response", G_CALLBACK(gtk_widget_destroy), NULL);
-		gtk_window_present(GTK_WINDOW (d));
+        d = gtk_message_dialog_new(GTK_WINDOW(window), GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "%s", message);
+        gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(d), "%s", error->message);
+        g_signal_connect(d, "response", G_CALLBACK(gtk_widget_destroy), NULL);
+        gtk_window_present(GTK_WINDOW (d));
 
-		g_error_free(error);
-	}
+        g_error_free(error);
+    }
 }
 
 
 static void about_cb(GtkWidget* widget, MathWindow* window)
 {
-	char* authors[] = {
-		"Rich Burridge <[email protected]>",
-		"Robert Ancell <[email protected]>",
-		"Klaus Niederkrüger <[email protected]>",
-		NULL
-	};
-
-	char* documenters[] = {
-		"Sun Microsystems",
-		NULL
-	};
-
-	/* The translator credits. Please translate this with your name(s). */
-	char* translator_credits = _("translator-credits");
-
-	char copyright[] = \
-		"Copyright \xc2\xa9 1986–2010 The mate-calc authors";
-
-	/* The license this software is under (GPL2+) */
-	char* license = _("mate-calc is free software; you can redistribute it and/or modify\n"
-		"it under the terms of the GNU General Public License as published by\n"
-		"the Free Software Foundation; either version 2 of the License, or\n"
-		"(at your option) any later version.\n"
-		"\n"
-		"mate-calc is distributed in the hope that it will be useful,\n"
-		"but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
-		"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
-		"GNU General Public License for more details.\n"
-		"\n"
-		"You should have received a copy of the GNU General Public License\n"
-		"along with mate-calc; if not, write to the Free Software Foundation, Inc.,\n"
-		"51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA");
-
-	gtk_show_about_dialog(GTK_WINDOW(window),
-		"name", _("mate-calc"),
-		"version", VERSION,
-		"copyright", copyright,
-		"license", license,
-		"comments", _("Calculator with financial and scientific modes."),
-		"authors", authors,
-		"documenters", documenters,
-		"translator_credits", translator_credits,
-		"logo-icon-name", "accessories-calculator",
-        "webiste", "https://mate-desktop.org",
-		NULL);
+    char* authors[] = {
+        "Rich Burridge <[email protected]>",
+        "Robert Ancell <[email protected]>",
+        "Klaus Niederkrüger <[email protected]>",
+        NULL
+    };
+
+    char* documenters[] = {
+        "Sun Microsystems",
+        NULL
+    };
+
+    /* The translator credits. Please translate this with your name(s). */
+    char* translator_credits = _("translator-credits");
+
+    char copyright[] = \
+        "Copyright \xc2\xa9 1986–2010 The mate-calc authors";
+
+    /* The license this software is under (GPL2+) */
+    char* license = _("mate-calc is free software; you can redistribute it and/or modify\n"
+        "it under the terms of the GNU General Public License as published by\n"
+        "the Free Software Foundation; either version 2 of the License, or\n"
+        "(at your option) any later version.\n"
+        "\n"
+        "mate-calc is distributed in the hope that it will be useful,\n"
+        "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
+        "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
+        "GNU General Public License for more details.\n"
+        "\n"
+        "You should have received a copy of the GNU General Public License\n"
+        "along with mate-calc; if not, write to the Free Software Foundation, Inc.,\n"
+        "51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA");
+
+    gtk_show_about_dialog(GTK_WINDOW(window),
+        "name", _("mate-calc"),
+        "version", VERSION,
+        "copyright", copyright,
+        "license", license,
+        "comments", _("Calculator with financial and scientific modes."),
+        "authors", authors,
+        "documenters", documenters,
+        "translator_credits", translator_credits,
+        "logo-icon-name", "accessories-calculator",
+        "website", "https://mate-desktop.org",
+        NULL);
 }
 
 
 static void quit_cb(GtkWidget* widget, MathWindow* window)
 {
-	g_signal_emit(window, signals[QUIT], 0);
+    g_signal_emit(window, signals[QUIT], 0);
 }
 
 
 static gboolean key_press_cb(MathWindow* window, GdkEventKey* event)
 {
-	gboolean result;
+    gboolean result;
 
-	g_signal_emit_by_name(window->priv->display, "key-press-event", event, &result);
+    g_signal_emit_by_name(window->priv->display, "key-press-event", event, &result);
 
-	return result;
+    return result;
 }
 
 
 static void delete_cb(MathWindow* window, GdkEvent* event)
 {
-	g_signal_emit(window, signals[QUIT], 0);
+    g_signal_emit(window, signals[QUIT], 0);
 }
 
 
 static void scroll_changed_cb(GtkAdjustment* adjustment, MathWindow* window)
 {
-	if (window->priv->right_aligned)
-	{
-		gtk_adjustment_set_value(adjustment, gtk_adjustment_get_upper(adjustment) - gtk_adjustment_get_page_size(adjustment));
-	}
+    if (window->priv->right_aligned)
+    {
+        gtk_adjustment_set_value(adjustment, gtk_adjustment_get_upper(adjustment) - gtk_adjustment_get_page_size(adjustment));
+    }
 }
 
 
 static void scroll_value_changed_cb(GtkAdjustment* adjustment, MathWindow* window)
 {
-	if (gtk_adjustment_get_value(adjustment) == gtk_adjustment_get_upper(adjustment) - gtk_adjustment_get_page_size(adjustment))
-	{
-		window->priv->right_aligned = TRUE;
-	}
-	else
-	{
-		window->priv->right_aligned = FALSE;
-	}
+    if (gtk_adjustment_get_value(adjustment) == gtk_adjustment_get_upper(adjustment) - gtk_adjustment_get_page_size(adjustment))
+    {
+        window->priv->right_aligned = TRUE;
+    }
+    else
+    {
+        window->priv->right_aligned = FALSE;
+    }
 }
 
 
 static void button_mode_changed_cb(MathButtons* buttons, GParamSpec* spec, MathWindow* window)
 {
-	GtkWidget* menu;
-
-	switch(math_buttons_get_mode(buttons))
-	{
-		default:
-		case BASIC:
-			menu = window->priv->mode_basic_menu_item;
-			//FIXME: Should it revert to decimal mode? math_equation_set_number_format(window->priv->equation, DEC);
-			break;
-
-		case ADVANCED:
-			menu = window->priv->mode_advanced_menu_item;
-			break;
-
-		case FINANCIAL:
-			menu = window->priv->mode_financial_menu_item;
-			break;
-
-		case PROGRAMMING:
-			menu = window->priv->mode_programming_menu_item;
-			break;
-	}
-
-	gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(menu), TRUE);
+    GtkWidget* menu;
+
+    switch(math_buttons_get_mode(buttons))
+    {
+        default:
+        case BASIC:
+            menu = window->priv->mode_basic_menu_item;
+            //FIXME: Should it revert to decimal mode? math_equation_set_number_format(window->priv->equation, DEC);
+            break;
+
+        case ADVANCED:
+            menu = window->priv->mode_advanced_menu_item;
+            break;
+
+        case FINANCIAL:
+            menu = window->priv->mode_financial_menu_item;
+            break;
+
+        case PROGRAMMING:
+            menu = window->priv->mode_programming_menu_item;
+            break;
+    }
+
+    gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(menu), TRUE);
 }
 
 
 static GtkWidget* add_menu(GtkWidget* menu_bar, const gchar* name)
 {
-	GtkWidget* menu_item;
-	GtkWidget* menu;
+    GtkWidget* menu_item;
+    GtkWidget* menu;
 
-	menu_item = gtk_menu_item_new_with_mnemonic(name);
-	gtk_menu_shell_append(GTK_MENU_SHELL(menu_bar), menu_item);
-	gtk_widget_show(menu_item);
-	menu = gtk_menu_new();
-	gtk_menu_item_set_submenu(GTK_MENU_ITEM(menu_item), menu);
+    menu_item = gtk_menu_item_new_with_mnemonic(name);
+    gtk_menu_shell_append(GTK_MENU_SHELL(menu_bar), menu_item);
+    gtk_widget_show(menu_item);
+    menu = gtk_menu_new();
+    gtk_menu_item_set_submenu(GTK_MENU_ITEM(menu_item), menu);
 
-	return menu;
+    return menu;
 }
 
 
 static GtkWidget* add_menu_item(GtkWidget* menu, GtkWidget* menu_item, GCallback callback, gpointer callback_data)
 {
-	gtk_menu_shell_append(GTK_MENU_SHELL(menu), menu_item);
-	gtk_widget_show(menu_item);
+    gtk_menu_shell_append(GTK_MENU_SHELL(menu), menu_item);
+    gtk_widget_show(menu_item);
 
-	if (callback)
-	{
-		g_signal_connect(G_OBJECT(menu_item), "activate", callback, callback_data);
-	}
+    if (callback)
+    {
+        g_signal_connect(G_OBJECT(menu_item), "activate", callback, callback_data);
+    }
 
-	return menu_item;
+    return menu_item;
 }
 
 
@@ -334,159 +334,159 @@ static GtkWidget* radio_menu_item_new(GSList** group, const gchar* name)
 
 static void create_menu(MathWindow* window)
 {
-	GtkAccelGroup* accel_group;
-	GtkWidget* menu;
-	GtkWidget* menu_item;
-	GSList* group = NULL;
-
-	accel_group = gtk_accel_group_new();
-	gtk_window_add_accel_group(GTK_WINDOW(window), accel_group);
-
-	/* Calculator menu */
-	#define CALCULATOR_MENU_LABEL _("_Calculator")
-	/* Mode menu */
-	#define MODE_MENU_LABEL _("_Mode")
-	/* Help menu label */
-	#define HELP_MENU_LABEL _("_Help")
-	/* Basic menu label */
-	#define MODE_BASIC_LABEL _("_Basic")
-	/* Advanced menu label */
-	#define MODE_ADVANCED_LABEL _("_Advanced")
-	/* Financial menu label */
-	#define MODE_FINANCIAL_LABEL _("_Financial")
-	/* Programming menu label */
-	#define MODE_PROGRAMMING_LABEL _("_Programming")
-	/* Help>Contents menu label */
-	#define HELP_CONTENTS_LABEL _("_Contents")
-
-	menu = add_menu(window->priv->menu_bar, CALCULATOR_MENU_LABEL);
-	add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_COPY, accel_group), G_CALLBACK(copy_cb), window);
-	add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_PASTE, accel_group), G_CALLBACK(paste_cb), window);
-	menu_item = add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_UNDO, accel_group), G_CALLBACK(undo_cb), window);
-	gtk_widget_add_accelerator(menu_item, "activate", accel_group, GDK_z, GDK_CONTROL_MASK, GTK_ACCEL_VISIBLE);
-	menu_item = add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_REDO, accel_group), G_CALLBACK(redo_cb), window);
-	gtk_widget_add_accelerator(menu_item, "activate", accel_group, GDK_z, GDK_CONTROL_MASK | GDK_SHIFT_MASK, GTK_ACCEL_VISIBLE);
-	add_menu_item(menu, gtk_separator_menu_item_new(), NULL, NULL);
-	add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_PREFERENCES, accel_group), G_CALLBACK(show_preferences_cb), window);
-	add_menu_item(menu, gtk_separator_menu_item_new(), NULL, NULL);
-	menu_item = add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_QUIT, accel_group), G_CALLBACK(quit_cb), window);
-	gtk_widget_add_accelerator(menu_item, "activate", accel_group, GDK_w, GDK_CONTROL_MASK, 0);
-
-	menu = add_menu(window->priv->menu_bar, MODE_MENU_LABEL);
-	window->priv->mode_basic_menu_item = add_menu_item(menu, radio_menu_item_new(&group, MODE_BASIC_LABEL), G_CALLBACK(mode_changed_cb), window);
-	g_object_set_data(G_OBJECT(window->priv->mode_basic_menu_item), "calcmode", GINT_TO_POINTER(BASIC));
-	window->priv->mode_advanced_menu_item = add_menu_item(menu, radio_menu_item_new(&group, MODE_ADVANCED_LABEL), G_CALLBACK(mode_changed_cb), window);
-	g_object_set_data(G_OBJECT(window->priv->mode_advanced_menu_item), "calcmode", GINT_TO_POINTER(ADVANCED));
-	window->priv->mode_financial_menu_item = add_menu_item(menu, radio_menu_item_new(&group, MODE_FINANCIAL_LABEL), G_CALLBACK(mode_changed_cb), window);
-	g_object_set_data(G_OBJECT(window->priv->mode_financial_menu_item), "calcmode", GINT_TO_POINTER(FINANCIAL));
-	window->priv->mode_programming_menu_item = add_menu_item(menu, radio_menu_item_new(&group, MODE_PROGRAMMING_LABEL), G_CALLBACK(mode_changed_cb), window);
-	g_object_set_data(G_OBJECT(window->priv->mode_programming_menu_item), "calcmode", GINT_TO_POINTER(PROGRAMMING));
-
-	menu = add_menu(window->priv->menu_bar, HELP_MENU_LABEL);
-	menu_item = add_menu_item(menu, gtk_menu_item_new_with_mnemonic(HELP_CONTENTS_LABEL), G_CALLBACK(help_cb), window);
-	gtk_widget_add_accelerator(menu_item, "activate", accel_group, GDK_F1, 0, GTK_ACCEL_VISIBLE);
-	add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_ABOUT, accel_group), G_CALLBACK(about_cb), window);
+    GtkAccelGroup* accel_group;
+    GtkWidget* menu;
+    GtkWidget* menu_item;
+    GSList* group = NULL;
+
+    accel_group = gtk_accel_group_new();
+    gtk_window_add_accel_group(GTK_WINDOW(window), accel_group);
+
+    /* Calculator menu */
+    #define CALCULATOR_MENU_LABEL _("_Calculator")
+    /* Mode menu */
+    #define MODE_MENU_LABEL _("_Mode")
+    /* Help menu label */
+    #define HELP_MENU_LABEL _("_Help")
+    /* Basic menu label */
+    #define MODE_BASIC_LABEL _("_Basic")
+    /* Advanced menu label */
+    #define MODE_ADVANCED_LABEL _("_Advanced")
+    /* Financial menu label */
+    #define MODE_FINANCIAL_LABEL _("_Financial")
+    /* Programming menu label */
+    #define MODE_PROGRAMMING_LABEL _("_Programming")
+    /* Help>Contents menu label */
+    #define HELP_CONTENTS_LABEL _("_Contents")
+
+    menu = add_menu(window->priv->menu_bar, CALCULATOR_MENU_LABEL);
+    add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_COPY, accel_group), G_CALLBACK(copy_cb), window);
+    add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_PASTE, accel_group), G_CALLBACK(paste_cb), window);
+    menu_item = add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_UNDO, accel_group), G_CALLBACK(undo_cb), window);
+    gtk_widget_add_accelerator(menu_item, "activate", accel_group, GDK_z, GDK_CONTROL_MASK, GTK_ACCEL_VISIBLE);
+    menu_item = add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_REDO, accel_group), G_CALLBACK(redo_cb), window);
+    gtk_widget_add_accelerator(menu_item, "activate", accel_group, GDK_z, GDK_CONTROL_MASK | GDK_SHIFT_MASK, GTK_ACCEL_VISIBLE);
+    add_menu_item(menu, gtk_separator_menu_item_new(), NULL, NULL);
+    add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_PREFERENCES, accel_group), G_CALLBACK(show_preferences_cb), window);
+    add_menu_item(menu, gtk_separator_menu_item_new(), NULL, NULL);
+    menu_item = add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_QUIT, accel_group), G_CALLBACK(quit_cb), window);
+    gtk_widget_add_accelerator(menu_item, "activate", accel_group, GDK_w, GDK_CONTROL_MASK, 0);
+
+    menu = add_menu(window->priv->menu_bar, MODE_MENU_LABEL);
+    window->priv->mode_basic_menu_item = add_menu_item(menu, radio_menu_item_new(&group, MODE_BASIC_LABEL), G_CALLBACK(mode_changed_cb), window);
+    g_object_set_data(G_OBJECT(window->priv->mode_basic_menu_item), "calcmode", GINT_TO_POINTER(BASIC));
+    window->priv->mode_advanced_menu_item = add_menu_item(menu, radio_menu_item_new(&group, MODE_ADVANCED_LABEL), G_CALLBACK(mode_changed_cb), window);
+    g_object_set_data(G_OBJECT(window->priv->mode_advanced_menu_item), "calcmode", GINT_TO_POINTER(ADVANCED));
+    window->priv->mode_financial_menu_item = add_menu_item(menu, radio_menu_item_new(&group, MODE_FINANCIAL_LABEL), G_CALLBACK(mode_changed_cb), window);
+    g_object_set_data(G_OBJECT(window->priv->mode_financial_menu_item), "calcmode", GINT_TO_POINTER(FINANCIAL));
+    window->priv->mode_programming_menu_item = add_menu_item(menu, radio_menu_item_new(&group, MODE_PROGRAMMING_LABEL), G_CALLBACK(mode_changed_cb), window);
+    g_object_set_data(G_OBJECT(window->priv->mode_programming_menu_item), "calcmode", GINT_TO_POINTER(PROGRAMMING));
+
+    menu = add_menu(window->priv->menu_bar, HELP_MENU_LABEL);
+    menu_item = add_menu_item(menu, gtk_menu_item_new_with_mnemonic(HELP_CONTENTS_LABEL), G_CALLBACK(help_cb), window);
+    gtk_widget_add_accelerator(menu_item, "activate", accel_group, GDK_F1, 0, GTK_ACCEL_VISIBLE);
+    add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_ABOUT, accel_group), G_CALLBACK(about_cb), window);
 }
 
 
 static void create_gui(MathWindow* window)
 {
-	GtkWidget* main_vbox;
-	GtkWidget* vbox;
-	GtkWidget* scrolled_window;
-
-	main_vbox = gtk_vbox_new(FALSE, 0);
-	gtk_container_add(GTK_CONTAINER(window), main_vbox);
-	gtk_widget_show(main_vbox);
-
-	window->priv->menu_bar = gtk_menu_bar_new();
-	gtk_box_pack_start(GTK_BOX(main_vbox), window->priv->menu_bar, TRUE, TRUE, 0);
-	gtk_widget_show(window->priv->menu_bar);
-
-	create_menu(window);
-
-	vbox = gtk_vbox_new(FALSE, 6);
-	gtk_container_set_border_width(GTK_CONTAINER(vbox), 6);
-	gtk_box_pack_start(GTK_BOX(main_vbox), vbox, TRUE, TRUE, 0);
-	gtk_widget_show(vbox);
-
-	scrolled_window = gtk_scrolled_window_new(NULL, NULL);
-	gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window), GTK_POLICY_AUTOMATIC, GTK_POLICY_NEVER);
-	gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scrolled_window), GTK_SHADOW_IN);
-	gtk_box_pack_start(GTK_BOX(vbox), GTK_WIDGET(scrolled_window), TRUE, TRUE, 0);
-	g_signal_connect(gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(scrolled_window)), "changed", G_CALLBACK(scroll_changed_cb), window);
-	g_signal_connect(gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(scrolled_window)), "value-changed", G_CALLBACK(scroll_value_changed_cb), window);
-	window->priv->right_aligned = TRUE;
-	gtk_widget_show(scrolled_window);
-
-	window->priv->display = math_display_new_with_equation(window->priv->equation);
-	gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(scrolled_window), GTK_WIDGET(window->priv->display));
-	gtk_widget_show(GTK_WIDGET(window->priv->display));
-
-	window->priv->buttons = math_buttons_new(window->priv->equation);
-	g_signal_connect(window->priv->buttons, "notify::mode", G_CALLBACK(button_mode_changed_cb), window);
-	button_mode_changed_cb(window->priv->buttons, NULL, window);
-	gtk_box_pack_start(GTK_BOX(vbox), GTK_WIDGET(window->priv->buttons), TRUE, TRUE, 0);
-	gtk_widget_show(GTK_WIDGET(window->priv->buttons));
+    GtkWidget* main_vbox;
+    GtkWidget* vbox;
+    GtkWidget* scrolled_window;
+
+    main_vbox = gtk_vbox_new(FALSE, 0);
+    gtk_container_add(GTK_CONTAINER(window), main_vbox);
+    gtk_widget_show(main_vbox);
+
+    window->priv->menu_bar = gtk_menu_bar_new();
+    gtk_box_pack_start(GTK_BOX(main_vbox), window->priv->menu_bar, TRUE, TRUE, 0);
+    gtk_widget_show(window->priv->menu_bar);
+
+    create_menu(window);
+
+    vbox = gtk_vbox_new(FALSE, 6);
+    gtk_container_set_border_width(GTK_CONTAINER(vbox), 6);
+    gtk_box_pack_start(GTK_BOX(main_vbox), vbox, TRUE, TRUE, 0);
+    gtk_widget_show(vbox);
+
+    scrolled_window = gtk_scrolled_window_new(NULL, NULL);
+    gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window), GTK_POLICY_AUTOMATIC, GTK_POLICY_NEVER);
+    gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scrolled_window), GTK_SHADOW_IN);
+    gtk_box_pack_start(GTK_BOX(vbox), GTK_WIDGET(scrolled_window), TRUE, TRUE, 0);
+    g_signal_connect(gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(scrolled_window)), "changed", G_CALLBACK(scroll_changed_cb), window);
+    g_signal_connect(gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(scrolled_window)), "value-changed", G_CALLBACK(scroll_value_changed_cb), window);
+    window->priv->right_aligned = TRUE;
+    gtk_widget_show(scrolled_window);
+
+    window->priv->display = math_display_new_with_equation(window->priv->equation);
+    gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(scrolled_window), GTK_WIDGET(window->priv->display));
+    gtk_widget_show(GTK_WIDGET(window->priv->display));
+
+    window->priv->buttons = math_buttons_new(window->priv->equation);
+    g_signal_connect(window->priv->buttons, "notify::mode", G_CALLBACK(button_mode_changed_cb), window);
+    button_mode_changed_cb(window->priv->buttons, NULL, window);
+    gtk_box_pack_start(GTK_BOX(vbox), GTK_WIDGET(window->priv->buttons), TRUE, TRUE, 0);
+    gtk_widget_show(GTK_WIDGET(window->priv->buttons));
 }
 
 
 static void math_window_set_property(GObject* object, guint prop_id, const GValue* value, GParamSpec* pspec)
 {
-	MathWindow* self = MATH_WINDOW(object);
-
-	switch (prop_id)
-	{
-		case PROP_EQUATION:
-			self->priv->equation = g_value_get_object(value);
-			create_gui(self);
-			break;
-		default:
-			G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
-			break;
-	}
+    MathWindow* self = MATH_WINDOW(object);
+
+    switch (prop_id)
+    {
+        case PROP_EQUATION:
+            self->priv->equation = g_value_get_object(value);
+            create_gui(self);
+            break;
+        default:
+            G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
+            break;
+    }
 }
 
 
 static void math_window_get_property(GObject* object, guint prop_id, GValue* value, GParamSpec* pspec)
 {
-	MathWindow* self = MATH_WINDOW(object);
-
-	switch (prop_id)
-	{
-		case PROP_EQUATION:
-			g_value_set_object (value, self->priv->equation);
-			break;
-		default:
-			G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-			break;
-	}
+    MathWindow* self = MATH_WINDOW(object);
+
+    switch (prop_id)
+    {
+        case PROP_EQUATION:
+            g_value_set_object (value, self->priv->equation);
+            break;
+        default:
+            G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+            break;
+    }
 }
 
 
 static void math_window_class_init(MathWindowClass* klass)
 {
-	GObjectClass* object_class = G_OBJECT_CLASS(klass);
+    GObjectClass* object_class = G_OBJECT_CLASS(klass);
 
-	object_class->get_property = math_window_get_property;
-	object_class->set_property = math_window_set_property;
+    object_class->get_property = math_window_get_property;
+    object_class->set_property = math_window_set_property;
 
-	g_type_class_add_private(klass, sizeof(MathWindowPrivate));
+    g_type_class_add_private(klass, sizeof(MathWindowPrivate));
 
-	g_object_class_install_property(object_class, PROP_EQUATION, g_param_spec_object("equation", "equation", "Equation being calculated", math_equation_get_type(), G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
+    g_object_class_install_property(object_class, PROP_EQUATION, g_param_spec_object("equation", "equation", "Equation being calculated", math_equation_get_type(), G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
 
-	signals[QUIT] = g_signal_new("quit", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET(MathWindowClass, quit), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+    signals[QUIT] = g_signal_new("quit", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET(MathWindowClass, quit), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
 }
 
 
 static void math_window_init(MathWindow* window)
 {
-	window->priv = G_TYPE_INSTANCE_GET_PRIVATE(window, math_window_get_type(), MathWindowPrivate);
-
-	gtk_window_set_title(GTK_WINDOW(window), _("Calculator")); /* Title of main window */
-	gtk_window_set_icon_name(GTK_WINDOW(window), "accessories-calculator");
-	gtk_window_set_role(GTK_WINDOW(window), "mate-calc");
-	gtk_window_set_resizable(GTK_WINDOW(window), FALSE);
-	g_signal_connect_after(G_OBJECT(window), "key-press-event", G_CALLBACK(key_press_cb), NULL);
-	g_signal_connect(G_OBJECT(window), "delete-event", G_CALLBACK(delete_cb), NULL);
+    window->priv = G_TYPE_INSTANCE_GET_PRIVATE(window, math_window_get_type(), MathWindowPrivate);
+
+    gtk_window_set_title(GTK_WINDOW(window), _("Calculator")); /* Title of main window */
+    gtk_window_set_icon_name(GTK_WINDOW(window), "accessories-calculator");
+    gtk_window_set_role(GTK_WINDOW(window), "mate-calc");
+    gtk_window_set_resizable(GTK_WINDOW(window), FALSE);
+    g_signal_connect_after(G_OBJECT(window), "key-press-event", G_CALLBACK(key_press_cb), NULL);
+    g_signal_connect(G_OBJECT(window), "delete-event", G_CALLBACK(delete_cb), NULL);
 }