Moved mirage2 to use newer GTK template structure patterns

src/libs/controllers/emit_dispatcher.py

@@ -0,0 +1,29 @@
+# Python imports
+
+# Lib imports
+
+# Application imports
+from ..dto.base_event import BaseEvent
+
+
+
+class EmitDispatcher:
+    """
+        EmitDispatcher is used for allowing controllers to pass/hook in
+        their message system to children that need to signal events.
+        Note how we are not handling return info from the 'message' methods
+        whereas a controller would or could do so.
+    """
+
+    def __init__(self):
+        super(EmitDispatcher, self).__init__()
+
+
+    def emit(self, event: BaseEvent):
+        self.message(event)
+
+    def emit_to(self, controller: str, event: BaseEvent):
+        self.message_to(controller, event)
+
+    def emit_to_selected(self, names: list[str], event: BaseEvent):
+        self.message_to_selected(names, event)