From dbf88e0f12fe015467ecf89d95a2ba4303d9f73a Mon Sep 17 00:00:00 2001
From: erick <erick@sugar-dev-erick.(none)>
Date: Sat, 05 Dec 2009 00:19:19 +0000
Subject: Merge branch 'master' into frame_integration

---
(limited to 'tutorius/actions.py')

diff --git a/tutorius/actions.py b/tutorius/actions.py
index 75c9c9b..8cc5f08 100644
--- a/tutorius/actions.py
+++ b/tutorius/actions.py
@@ -26,14 +26,21 @@ from . import addon
 from .services import ObjectStore
 from .properties import *
 
+import pickle
+
+import logging
+
+LOGGER = logging.getLogger("actions")
+
 class DragWrapper(object):
     """Wrapper to allow gtk widgets to be dragged around"""
-    def __init__(self, widget, position, draggable=False):
+    def __init__(self, widget, position, update_action_cb, draggable=False):
         """
         Creates a wrapper to allow gtk widgets to be mouse dragged, if the
         parent container supports the move() method, like a gtk.Layout.
         @param widget the widget to enhance with drag capability
         @param position the widget's position. Will translate the widget if needed
+        @param update_action_cb The callback to trigger 
         @param draggable wether to enable the drag functionality now
         """
         self._widget = widget
@@ -45,6 +52,7 @@ class DragWrapper(object):
         self.position = position # position of the widget
         self.moved = False
 
+        self.update_action_cb = update_action_cb
         self.draggable = draggable
 
     def _pressed_cb(self, widget, evt):
@@ -79,10 +87,13 @@ class DragWrapper(object):
         self._eventbox.grab_remove()
         self._dragging = False
 
+        LOGGER.debug("DragWrapper :: Sending update notification...")
+        self.update_action_cb('position', self.position)
+
     def _drag_end(self, *args):
         """Callback for end of drag (stolen focus)."""
         self._dragging = False
-
+    
     def set_draggable(self, value):
         """Setter for the draggable property"""
         if bool(value) ^ bool(self._drag_on):
@@ -139,6 +150,9 @@ class Action(TPropContainer):
         TPropContainer.__init__(self)
         self.position = (0,0)
         self._drag = None
+        # The callback that will be triggered when the action is requested
+        # to notify all its changes
+        self._properties_updated_cb = None
 
     def do(self, **kwargs):
         """
@@ -152,6 +166,32 @@ class Action(TPropContainer):
         """
         pass #Should raise NotImplemented?
 
+
+    def set_notification_cb(self, notif_cb):
+        LOGGER.debug("Action :: Setting notification callback for creator...")
+        self._properties_updated_cb = notif_cb
+    
+    def update_property(self, name, value):
+        """
+        Callback used in the wrapper to send a new value to an action.
+        """
+        LOGGER.debug("Action :: update_property on %s with value '%s'"%(name, str(value)))
+        # Set the property itself - this will modify the diff dict and we will
+        # be able to notify the owner with the new value
+        self.__setattr__(name, value)
+
+        # Send the notification to the creator
+        self.notify()
+
+    def notify(self):
+        LOGGER.debug("Action :: Notifying creator with new values in dict : %s"%(str(self._diff_dict)))
+        # If a notification callback was registered
+        if self._property_update_cb:
+            # Propagate it
+            self._property_update_cb(self._diff_dict)
+            # Empty the diff dict as we just synchronized with the creator
+            self._diff_dict.clear()
+
     def enter_editmode(self, **kwargs):
         """
         Enters edit mode. The action should display itself in some way,
@@ -171,7 +211,7 @@ class Action(TPropContainer):
 
         ObjectStore().activity._overlayer.put(self.__edit_img, x, y)
         self.__edit_img.show_all()
-        self._drag = DragWrapper(self.__edit_img, self.position, True)
+        self._drag = DragWrapper(self.__edit_img, self.position, update_action_cb=self.update_property, draggable=True)
 
     def exit_editmode(self, **kwargs):
         x, y = self._drag.position
--
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