0002542: Crash whilst generating web pages from command line

Throwing Report Error if center person is not in database. Added catching of Report Error to CommandLineReport
if using GUI it is not possible to cause this, as you have to select a person that is in the DB. However on the command line you can specify any PID and even no person with that pid exists an error was thrown.

svn: r13004

src/plugins/graph/GVHourGlass.py

@@ -37,11 +37,12 @@ from gettext import gettext as _
 # GRAMPS modules
 #
 #------------------------------------------------------------------------
-from gen.plug import PluginManager
-from gen.plug.menu import PersonOption, BooleanOption, NumberOption, \
-                          EnumeratedListOption
-from ReportBase import Report, ReportUtils, MenuReportOptions, CATEGORY_GRAPHVIZ
 from BasicUtils import name_displayer
+from Errors import ReportError
+from gen.plug import PluginManager
+from gen.plug.menu import (PersonOption, BooleanOption, NumberOption, 
+                          EnumeratedListOption)
+from ReportBase import Report, ReportUtils, MenuReportOptions, CATEGORY_GRAPHVIZ
 import DateHandler
 
 #------------------------------------------------------------------------
@@ -94,6 +95,8 @@ class HourGlassReport(Report):
         self.max_ascend  = menu.get_option_by_name('maxascend').get_value()
         pid = menu.get_option_by_name('pid').get_value()
         self.center_person = database.get_person_from_gramps_id(pid)
+        if (self.center_person == None) :
+            raise ReportError(_("Person %s is not in the Database") % pid )
         self.colorize = menu.get_option_by_name('color').get_value()
         if self.colorize == 'colored':
             self.colors = colored