[billreminder] Don't allow the end date for recurring records to be set before the start date. This should take car

[Og B. Maciel <ogmaciel src gnome org>]

commit 3938a92348f74b5d9637a8e6b3a50c4c8e5d3212
Author: Og B. Maciel <ogmaciel gnome org>
Date:   Sun Dec 12 12:35:35 2010 -0500

    Don't allow the end date for recurring records to be set before the start date. This should take care of b.g.o #563736 but some refactoring will be needed.

 src/gui/adddialog.py |   25 +++++++++++++++++++++----
 1 files changed, 21 insertions(+), 4 deletions(-)
---
diff --git a/src/gui/adddialog.py b/src/gui/adddialog.py
index 2417c1f..5cc36ca 100644
--- a/src/gui/adddialog.py
+++ b/src/gui/adddialog.py
@@ -78,6 +78,7 @@ class AddDialog(object):
 
         self.endDate = DatePicker()
         self.ui.get_object("end_date_box").add(self.endDate)
+        self.endDate.connect('date_changed', self._on_datepicker_date_changed)
 
         self.payee = self.ui.get_object("payee")
         self.payeecompletion = gtk.EntryCompletion()
@@ -412,10 +413,26 @@ class AddDialog(object):
             self.window.response(gtk.RESPONSE_ACCEPT)
 
     def _on_datepicker_date_changed(self, widget, args):
-        # Only reprogram alarm if it is not None
-        print "Date changed"
-        # Update endDate to be equal to dueDate
-        self.endDate.set_date(self.dueDate.get_date())
+
+        startDate = self.dueDate.get_date()
+        endDate = self.endDate.get_date()
+
+        if widget == self.dueDate:
+            if startDate > endDate:
+                # Update endDate to be equal to dueDate
+                self.endDate.set_date(self.dueDate.get_date())
+                message = utils.Message()
+                text = _("The end date is set to a date prior to the start date. Setting it to match the start date.")
+                title = _("Date set in the past")
+                message.ShowInfo(text=text, parentWindow=self.window, title=title)
+        else:
+            if startDate > endDate:
+                # Update endDate to be equal to dueDate
+                self.endDate.set_date(self.dueDate.get_date())
+                message = utils.Message()
+                text = _("The end date is set to a date prior to the start date. Setting it to match the start date.")
+                title = _("Date set in the past")
+                message.ShowInfo(text=text, parentWindow=self.window, title=title)
 
         if self.alarmbutton.get_date():
             # Extracts the date off the datepicker widget