Draft naive incremental load.

main.py

@@ -95,6 +95,15 @@ class MainWindow(Gtk.Window):
 
     ## Callbacks
     def on_task_list_ready(self, agenda):
+        # TODO: Avoid reconstructing the whole list every time
+        i = 0
+        child = self.task_list.get_first_child()
+        while child is not None:
+            was = child
+            child = child.get_next_sibling()
+            i += 1
+            self.task_list.remove(was)
+
         for item in agenda.with_hour:
             self.task_list.append(self.build_agenda_task_row(item))
 

task_manager.py

@@ -56,6 +56,8 @@ class TaskManager:
         top = os.path.abspath(self.docs_path)
 
         docs = []
+        if self.docs is None:
+            self.docs = docs
 
         for root, dirs, files in os.walk(top):
             # Prune dirs
@@ -74,8 +76,9 @@ class TaskManager:
                 path = os.path.join(root, name)
 
                 try:
-                    doc = org_rw.load(open(path), extra_cautious=True)
+                    doc = org_rw.load(open(path), extra_cautious=False)
                     docs.append(doc)
+                    yield doc
                 except Exception as err:
                     import traceback
 
@@ -91,10 +94,19 @@ class TaskManager:
     def get_task_list(self, callback):
         def aux():
             if self.docs is None:
-                self.load()
+                last_result = None
-            result = self.get_agenda()
+                for doc in self.load():
-            print("Result", result)
+                    result = self.get_agenda()
-            GObject.idle_add(callback, result)
+                    if ((last_result is None)
+                    or (len(result.with_hour) != len(last_result.with_hour)) 
+                    or  (len(result.no_hour) != len(last_result.no_hour))):
+                        print("Loaded:", doc._path)
+                        GObject.idle_add(callback, result)
+                print("Load completed")
+            else:
+                result = self.get_agenda()
+                print("Result", result)
+                GObject.idle_add(callback, result)
 
         thread = threading.Thread(target=aux)
         thread.start()