sdgui: make M-Tab go to the last chosen dictionary

src/sdgui.c

@@ -39,6 +39,7 @@ static struct
 	GtkWidget    *view;              ///< Entries view
 
 	gint          dictionary;        ///< Index of the current dictionary
+	gint          last;              ///< The last dictionary index
 	GPtrArray    *dictionaries;      ///< All open dictionaries
 
 	gboolean      watch_selection;   ///< Following X11 PRIMARY?
@@ -160,6 +161,7 @@ static void
 on_switch_page (G_GNUC_UNUSED GtkWidget *widget, G_GNUC_UNUSED GtkWidget *page,
 	guint page_num, G_GNUC_UNUSED gpointer data)
 {
+	g.last = g.dictionary;
 	g.dictionary = page_num;
 	search (g_ptr_array_index (g.dictionaries, g.dictionary));
 }
@@ -217,6 +219,11 @@ on_key_press (G_GNUC_UNUSED GtkWidget *widget, GdkEvent *event,
 			gtk_notebook_set_current_page (notebook, (n ? n : 10) - 1);
 			return TRUE;
 		}
+		if (event->key.keyval == GDK_KEY_Tab)
+		{
+			gtk_notebook_set_current_page (notebook, g.last);
+			return TRUE;
+		}
 	}
 	if (mods == 0)
 	{
@@ -236,12 +243,12 @@ on_key_press (G_GNUC_UNUSED GtkWidget *widget, GdkEvent *event,
 static void
 init_tabs (void)
 {
-	for (gsize i = 0; i < g.dictionaries->len; i++)
+	for (gsize i = g.dictionaries->len; i--; )
 	{
 		Dictionary *dict = g_ptr_array_index (g.dictionaries, i);
 		GtkWidget *dummy = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
 		GtkWidget *label = gtk_label_new (dict->name);
-		gtk_notebook_append_page (GTK_NOTEBOOK (g.notebook), dummy, label);
+		gtk_notebook_insert_page (GTK_NOTEBOOK (g.notebook), dummy, label, 0);
 	}
 
 	gtk_widget_show_all (g.notebook);
@@ -448,9 +455,9 @@ main (int argc, char *argv[])
 	GtkWidget *menu = gtk_menu_new ();
 	gtk_widget_set_halign (menu, GTK_ALIGN_END);
 	gtk_menu_shell_append (GTK_MENU_SHELL (menu), item_open);
-#ifndef WIN32
+#ifndef G_OS_WIN32
 	gtk_menu_shell_append (GTK_MENU_SHELL (menu), item_selection);
-#endif  // ! WIN32
+#endif  // ! G_OS_WIN32
 	gtk_widget_show_all (menu);
 
 	g.hamburger = gtk_menu_button_new ();

src/sdtui.c

@@ -154,6 +154,7 @@ struct application
 	GPtrArray     * dictionaries;       ///< All loaded AppDictionaries
 
 	StardictDict  * dict;               ///< The current dictionary
+	StardictDict  * last;               ///< The last dictionary
 	guint           show_help : 1;      ///< Whether help can be shown
 	guint           center_search : 1;  ///< Whether to center the search
 	guint           underline_last : 1; ///< Underline the last definition
@@ -1330,6 +1331,18 @@ app_get_current_definition (Application *self)
 	return NULL;
 }
 
+static void
+app_goto_dictionary_directly (Application *self, StardictDict *dict)
+{
+	if (dict == self->dict)
+		return;
+
+	self->last = self->dict;
+	self->dict = dict;
+	app_search_for_entry (self);
+	app_redraw_top (self);
+}
+
 /// Switch to a different dictionary by number.
 static gboolean
 app_goto_dictionary (Application *self, guint n)
@@ -1338,9 +1351,7 @@ app_goto_dictionary (Application *self, guint n)
 		return FALSE;
 
 	Dictionary *dict = g_ptr_array_index (self->dictionaries, n);
-	self->dict = dict->dict;
-	app_search_for_entry (self);
-	app_redraw_top (self);
+	app_goto_dictionary_directly (self, dict->dict);
 	return TRUE;
 }
 
@@ -1403,6 +1414,7 @@ enum user_action
 	USER_ACTION_GOTO_PAGE_NEXT,
 	USER_ACTION_GOTO_DICTIONARY_PREVIOUS,
 	USER_ACTION_GOTO_DICTIONARY_NEXT,
+	USER_ACTION_GOTO_DICTIONARY_LAST,
 
 	USER_ACTION_FLIP,
 
@@ -1505,6 +1517,12 @@ app_process_user_action (Application *self, UserAction action)
 		if (!app_goto_dictionary_delta (self, +1))
 			beep ();
 		return TRUE;
+	case USER_ACTION_GOTO_DICTIONARY_LAST:
+		if (!self->last)
+			beep ();
+		else
+			app_goto_dictionary_directly (self, self->last);
+		return TRUE;
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 
@@ -1678,6 +1696,7 @@ app_process_keysym (Application *self, termo_key_t *event)
 	{
 		[TERMO_SYM_LEFT]      = USER_ACTION_MOVE_SPLITTER_LEFT,
 		[TERMO_SYM_RIGHT]     = USER_ACTION_MOVE_SPLITTER_RIGHT,
+		[TERMO_SYM_TAB]       = USER_ACTION_GOTO_DICTIONARY_LAST,
 	};
 	static ActionMap actions_ctrl =
 	{