ocarina: Remove show_play_buttons() and hide_play_buttons()

I replaced these functions with a generic show_button_list() and
hide_button_list() functions.

gui/buttons/controls.cpp

@@ -7,35 +7,33 @@ using namespace std;
 
 static list<GtkWidget *> play_buttons;
 
-static void show_list(list<GtkWidget *> &buttons)
+static list<GtkWidget *> *get_buttons(button_list_t bttn_list)
+{
+	return &play_buttons;
+}
+
+void show_button_list(button_list_t bttn_list)
 {
 	list<GtkWidget *>::iterator it;
-	for(it = buttons.begin(); it != buttons.end(); it++)
+	list<GtkWidget *> *buttons = get_buttons(bttn_list);
+	for (it = buttons->begin(); it != buttons->end(); it++)
 		gtk_widget_show(*it);
 }
 
-static void hide_list(list<GtkWidget *> &buttons)
+void hide_button_list(button_list_t bttn_list)
 {
 	list<GtkWidget *>::iterator it;
-	for(it = buttons.begin(); it != buttons.end(); it++)
+	list<GtkWidget *> *buttons = get_buttons(bttn_list);
+	for (it = buttons->begin(); it != buttons->end(); it++)
 		gtk_widget_hide(*it);
 }
 
+
 static void on_click_play(GtkWidget *b, GdkEvent *e, gpointer d)
 {
 	libsaria_get()->play();
 }
 
-void show_play_buttons()
-{
-	show_list(play_buttons);
-}
-
-void hide_play_buttons()
-{
-	hide_list(play_buttons);
-}
-
 GtkWidget *make_play_button(GtkIconSize size)
 {
 	GtkWidget *b = make_button(GTK_STOCK_MEDIA_PLAY,

gui/callback.cpp

@@ -5,7 +5,7 @@
 void cb_play()
 {
 	print("Ocarina PLAY callback!");
-	hide_play_buttons();
+	hide_button_list(PLAY_BUTTON_LIST);
 	show_pause_buttons();
 }
 
@@ -13,7 +13,7 @@ void cb_pause()
 {
 	print("Ocarina PAUSE callback!");
 	hide_pause_buttons();
-	show_play_buttons();
+	show_button_list(PLAY_BUTTON_LIST);
 }
 
 static void add_callback(callback_t type, void (* func)())

include/ocarina/button.h

@@ -16,8 +16,14 @@ GtkWidget *make_pause_button(GtkIconSize);
 GtkWidget *make_stop_button(GtkIconSize);
 GtkWidget *make_open_button(GtkIconSize);
 
-void show_play_buttons();
+enum button_list_t {
-void hide_play_buttons();
+	PLAY_BUTTON_LIST,
+	PAUSE_BUTTON_LIST,
+};
+
+void show_button_list(button_list_t);
+void hide_button_list(button_list_t);
+
 void show_pause_buttons();
 void hide_pause_buttons();