add the first plugins

raven/plugins/domain/menucontribution.py

@@ -0,0 +1,11 @@
+from raven.plugins.domain.raction import RAction
+from raven.plugins.domain.rmenu import RMenu
+
+
+class MenuContribution():
+    def __init__(self, menu_id: str, action: RAction = None, menu: RMenu = None, action_id=None):
+        super(MenuContribution, self).__init__()
+        self.menu_id = menu_id
+        self.action = action
+        self.menu = menu
+        self.action_id = action_id

raven/plugins/domain/raction.py

@@ -0,0 +1,37 @@
+class RAction():
+
+    def __init__(self,
+                 label: str,
+                 action=None,
+                 shortcut: str = None,
+                 icon_from_theme: str = None,
+                 icon_file: str = None,
+                 checkable: bool = False,
+                 checked: bool = False
+                 ):
+        super(RAction, self).__init__()
+        self.label = label
+        self.action = action
+        self.shortcut = shortcut
+        self.icon_from_theme = icon_from_theme
+        self.icon_file = icon_file
+        self.checkable = checkable
+        self.checked = checked
+
+    def set_action(self, action):
+        self.action = action
+
+    def set_icon_from_theme(self, icon_from_theme: str):
+        self.icon_from_theme = icon_from_theme
+
+    def set_icon_file(self, icon_file: str):
+        self.icon_file = icon_file
+
+    def set_shortcut(self, shortcut: str):
+        self.shortcut = shortcut
+
+    def set_checkable(self, checkable: bool):
+        self.checkable = checkable
+
+    def set_checked(self, checked: bool):
+        self.checked = checked

raven/plugins/domain/rmenu.py

@@ -0,0 +1,26 @@
+from typing import Callable
+
+from raven.plugins.domain.raction import RAction
+
+
+class RMenu():
+    def __init__(self, label: str):
+        super(RMenu, self).__init__()
+        self.label = label
+        self.actions = []
+        self.listeners = []
+
+    def add_action(self, action: RAction):
+        self.actions.append(action)
+        self._notify()
+
+    def clear(self):
+        self.actions.clear()
+        self._notify()
+
+    def _notify(self):
+        for listener in self.listeners:
+            listener()
+
+    def add_change_listener(self, listener: Callable[[], None]):
+        self.listeners.append(listener)