update timestamps; added "Sort by timestamp"

grum/mainwin.py

@@ -47,6 +47,7 @@ class MainWindow(QMainWindow):
         sort_group = lst_menu.addGroup()
         sort_group.addCheckbox("Sort by insertion order", triggered=self.on_sort_by_insertion_order, state=True)
         sort_group.addCheckbox("Sort by name", triggered=self.on_sort_by_name)
+        sort_group.addCheckbox("Sort by timestamp", triggered=self.on_sort_by_timestamp)
         sort_group.addCheckbox("Sorting disabled", triggered=self.on_sorting_disabled)
 
         #TODO: clean up
@@ -119,6 +120,7 @@ class MainWindow(QMainWindow):
                 plot = sub.plots[name]
                 plot.setData(*desc.data)
                 alarm = False
+        item.timestamps.modification.update()
         item.set_alarm(alarm)
 
 
@@ -154,6 +156,9 @@ class MainWindow(QMainWindow):
     def on_sort_by_name(self):
         self.lst.enable_sort_by_text()
 
+    def on_sort_by_timestamp(self):
+        self.lst.enable_sort_by_timestamp()
+
     def on_sorting_disabled(self):
         self.lst.disable_sorting()
 
@@ -190,12 +195,14 @@ class MainWindow(QMainWindow):
         return desc
 
     def plot_single_item(self, item):
+        item.timestamps.access.update()
         item.set_alarm(False)
         name, desc = item.key, item.value
         self.activate_or_make_subwin(MDISubPlot, name, desc)
 
     def plot_multiple_items(self, items):
         for i in items:
+            i.timestamps.access.update()
             i.set_alarm(False)
         descs = {i.key: i.value for i in items}
         names = descs.keys()