add updating date and time after setting timezone

main.c

@@ -32,6 +32,13 @@ static char timezone_new[32] = {0};
 static char timezone_buffer[512][32];
 static int timezone_num = 0;
 
+static void date_init(GtkEntry *entry_date, GtkEntry *entry_hour, GtkEntry *entry_minute, GtkEntry *entry_second);
+
+static void update_date_time() {
+    date_init(GTK_ENTRY(entry_date), GTK_ENTRY(entry_hour),
+            GTK_ENTRY(entry_minute), GTK_ENTRY(entry_second));
+}
+
 static int get_timezone(const char *src, char *timezone) {
     const char *buf = src;
     int index = 0;
@@ -68,6 +75,10 @@ static void set_timedatectl(char *command, char *data) {
 static void set_timezone(char *timezone) {
     if (strcmp(timezone_cur, timezone)) {
         set_timedatectl("set-timezone", timezone);
+        /* Update current timezone to be set */
+        strcpy(timezone_cur, timezone);
+        /* Update current date time after setting timezone */
+        update_date_time();
     }
 }
 
@@ -112,10 +123,9 @@ static void get_time_date_status() {
             if (buf != NULL) {
                 get_timezone(buf + 1, timezone_cur);
                 if (!strcmp(timezone_cur, "Universal")) {
-                    strcpy(timezone_new, "UTC"); // Set default "Universal" timezone as UTC.
-                } else {
-                    strcpy(timezone_new, timezone_cur);
+                    strcpy(timezone_cur, "UTC"); // Set default "Universal" timezone as UTC.
                 }
+                strcpy(timezone_new, timezone_cur);
             }
         }
     }
@@ -140,18 +150,17 @@ static void combo_handler(GObject *combo, gpointer user_data) {
             /* Obtain string from model. */
             gtk_tree_model_get(model, &iter, 0, &string, -1);
         }
-
-#ifdef DEBUG
-        /* Print string to the console - if string is NULL, print NULL. */
-        g_print("[DEBUG] Selected (complex): >> %s <<\n", ( string ? string : "NULL" ));
-#endif
-
         /* Update current timezone */
-        strcpy(timezone_new, string);
+        strcpy(timezone_new, ( string ? string : "NULL" ));
 
         /* Free string (if not NULL). */
         if (string)
             g_free(string);
+            
+#ifdef DEBUG
+        /* Print string to the console - if string is NULL, print NULL. */
+        g_print("[DEBUG] Selected (complex): >> %s <<\n", timezone_new);
+#endif
     }
 }