From b677473cd497ce074bb74d8a0c86fb5a615a4dff Mon Sep 17 00:00:00 2001
From: "Serge A. Zaitsev" <zaitsev.serge@gmail.com>
Date: Thu, 12 Jan 2017 12:44:31 +0200
Subject: [PATCH] simplified recusrive menus (gtk)

---
 tray.h | 84 +++++++++++++++++++---------------------------------------
 1 file changed, 27 insertions(+), 57 deletions(-)

diff --git a/tray.h b/tray.h
index b192693..55dfc95 100644
--- a/tray.h
+++ b/tray.h
@@ -36,6 +36,31 @@ static void _tray_menu_cb(GtkMenuItem *item, gpointer data) {
   m->cb(m);
 }
 
+static GtkMenuShell *_tray_menu(struct tray_menu *m) {
+  GtkMenuShell *menu = (GtkMenuShell *)gtk_menu_new();
+  for (; m != NULL && m->text != NULL; m++) {
+    GtkWidget *item;
+    if (strcmp(m->text, "-") == 0) {
+      item = gtk_separator_menu_item_new();
+    } else {
+      if (m->submenu != NULL) {
+        item = gtk_menu_item_new_with_label(m->text);
+        gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), GTK_WIDGET(_tray_menu(m->submenu)));
+      } else {
+        item = gtk_check_menu_item_new_with_label(m->text);
+        gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(item), !!m->checked);
+      }
+      gtk_widget_set_sensitive(item, !m->disabled);
+      if (m->cb != NULL) {
+        g_signal_connect(item, "activate", G_CALLBACK(_tray_menu_cb), m);
+      }
+    }
+    gtk_widget_show(item);
+    gtk_menu_shell_append(menu, item);
+  }
+  return menu;
+}
+
 static int tray_init(struct tray *tray) {
   if (gtk_init_check(0, NULL) == FALSE) {
     return -1;
@@ -52,66 +77,11 @@ static int tray_loop(int blocking) {
   return loop_result;
 }
 
-// recursive proc
-static void submenu_update(struct tray_menu *m, GtkWidget *_item,
-                           GtkMenuShell *_submenu) {
-  GtkMenuShell *submenu;
-  for (struct tray_menu *s_m = m->submenu; s_m != NULL && s_m->text != NULL;
-       s_m++) {
-    GtkWidget *item;
-    if (s_m->submenu != NULL) {
-      item = gtk_menu_item_new_with_label(s_m->text);
-      submenu = (GtkMenuShell *)gtk_menu_new();
-      gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), (GtkWidget *)submenu);
-      submenu_update(s_m, item, submenu);
-      gtk_widget_show(item);
-      gtk_menu_shell_append(GTK_MENU_SHELL(_submenu), item);
-    } else if (strcmp(s_m->text, "-") == 0) {
-      gtk_menu_item_set_submenu(GTK_MENU_ITEM(_item), (GtkWidget *)_submenu);
-      item = gtk_separator_menu_item_new();
-      gtk_widget_show(item);
-      gtk_menu_shell_append(GTK_MENU_SHELL(_submenu), item);
-    } else {
-      gtk_menu_item_set_submenu(GTK_MENU_ITEM(_item), (GtkWidget *)_submenu);
-      item = gtk_check_menu_item_new_with_label(s_m->text);
-      gtk_widget_set_sensitive(item, !s_m->disabled);
-      gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(item), !!s_m->checked);
-      gtk_widget_show(item);
-      gtk_menu_shell_append(GTK_MENU_SHELL(_submenu), item);
-      if (s_m->cb != NULL) {
-        g_signal_connect(item, "activate", G_CALLBACK(_tray_menu_cb), s_m);
-      }
-    }
-  }
-}
-
 static void tray_update(struct tray *tray) {
-  GtkMenuShell *menu = (GtkMenuShell *)gtk_menu_new();
-  for (struct tray_menu *m = tray->menu; m != NULL && m->text != NULL; m++) {
-    GtkWidget *item;
-    if (m->submenu != NULL) {
-      GtkMenuShell *submenu = (GtkMenuShell *)gtk_menu_new();
-      item = gtk_menu_item_new_with_label(m->text);
-      gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), (GtkWidget *)submenu);
-      submenu_update(m, item, submenu);
-    } else if (strcmp(m->text, "-") == 0) {
-      item = gtk_separator_menu_item_new();
-    } else {
-      item = gtk_check_menu_item_new_with_label(m->text);
-      gtk_widget_set_sensitive(item, !m->disabled);
-      gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(item), !!m->checked);
-    }
-
-    gtk_widget_show(item);
-    gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
-    if (m->cb != NULL) {
-      g_signal_connect(item, "activate", G_CALLBACK(_tray_menu_cb), m);
-    }
-  }
   app_indicator_set_icon(indicator, tray->icon);
   // GTK is all about reference counting, so previous menu should be destroyed
   // here
-  app_indicator_set_menu(indicator, GTK_MENU(menu));
+  app_indicator_set_menu(indicator, GTK_MENU(_tray_menu(tray->menu)));
 }
 
 static void tray_exit() { loop_result = -1; }
@@ -349,4 +319,4 @@ static void tray_update(struct tray *tray) {}
 static void tray_exit();
 #endif
 
-#endif /* TRAY_H */
\ No newline at end of file
+#endif /* TRAY_H */