Allow to register callback after the pluginned classes got generated

src/Plugin/PluginManager.py

@@ -15,6 +15,7 @@ class PluginManager:
         self.subclass_order = {}  # Record the load order of the plugins, to keep it after reload
         self.pluggable = {}
         self.plugin_names = []  # Loaded plugin names
+        self.after_load = []  # Execute functions after loaded plugins
 
         sys.path.append(self.plugin_path)
 
@@ -42,6 +43,9 @@ class PluginManager:
             if dir_name not in self.plugin_names:
                 self.plugin_names.append(dir_name)
 
+        for func in self.after_load:
+            func()
+
     # Reload all plugins
     def reloadPlugins(self):
         self.plugins_before = self.plugins
@@ -141,6 +145,11 @@ def registerTo(class_name):
     return classDecorator
 
 
+def afterLoad(func):
+    plugin_manager.after_load.append(func)
+    return func
+
+
 # - Example usage -
 
 if __name__ == "__main__":