* src/GrampsGconfKeys.py (get_bool,get_int,get_string): Raise exception when default value could not be get from gconf schema

* src/const.py.in: Add custom exception "ErrorSchemaInvalid"
* src/GrampsMime.py (mime_type_is_defined): New method that returns True/False
* src/gramps_main.py (__init__) Catch "ErrorSchemaInvalid" exception and check for installed MIME-type. Show error because installation is incomplete.


svn: r4200

gramps2/ChangeLog

@@ -1,3 +1,13 @@
+2005-03-17  Martin Hawlisch  <Martin.Hawlisch@gmx.de>
+	* src/GrampsGconfKeys.py (get_bool,get_int,get_string): Raise
+	exception when default value could not be get from gconf schema
+	* src/const.py.in: Add custom exception "ErrorSchemaInvalid"
+	* src/GrampsMime.py (mime_type_is_defined): New method that returns
+	True/False
+	* src/gramps_main.py (__init__) Catch "ErrorSchemaInvalid" exception
+	and check for installed MIME-type. Show error because installation is
+	incomplete.
+	
 2005-03-17  Alex Roitman  <shura@gramps-project.org>
 	* acinclude.m4: Add macro for defining SHARED_MIME_DIR.
 	* configure.in: Use AM_SHARED_MIME macro.

gramps2/src/GrampsGconfKeys.py

@@ -38,10 +38,12 @@ except ImportError:
 
 import gobject
 import os
+from const import ErrorSchemaInvalid
 
 client = gconf.client_get_default()
 client.add_dir("/apps/gramps",gconf.CLIENT_PRELOAD_NONE)
 
+
 #-------------------------------------------------------------------------
 #
 # Functions to obtain values from gconf keys
@@ -345,7 +347,10 @@ def get_bool(key):
     if val in (True,False):
         return val
     else:
-        return client.get_default_from_schema(key).get_bool()
+        val = client.get_default_from_schema(key)
+        if val == None:
+            raise ErrorSchemaInvalid, "No default value for key "+key
+        return val.get_bool()
 
 def set_bool(key,val):
     if val in (True,False):
@@ -359,7 +364,10 @@ def get_int(key,correct_tuple=None):
     if not correct_tuple or val in correct_tuple:
         return val
     else:
-        return client.get_default_from_schema(key).get_int()
+        val = client.get_default_from_schema(key)
+        if val == None:
+            raise ErrorSchemaInvalid, "No default value for key "+key
+        return val.get_int()
 
 def set_int(key,val,correct_tuple=None):
     if not correct_tuple or val in correct_tuple:
@@ -373,7 +381,10 @@ def get_string(key,test_func=None):
     if not test_func or test_func(val):
         return val
     else:
-        return client.get_default_from_schema(key).get_string()
+        val = client.get_default_from_schema(key)
+        if val == None:
+            raise ErrorSchemaInvalid, "No default value for key "+key
+        return val.get_string()
 
 def set_string(key,val,test_func=None):
     if not test_func or test_func(val):
@@ -398,4 +409,3 @@ def set_string_as_id_prefix(key,val):
 
 def sync():
     client.suggest_sync()
-

gramps2/src/GrampsMime.py

@@ -51,3 +51,11 @@ def get_type(file):
         return get_mime_type(file)
     except:
         return _('unknown')
+
+def mime_type_is_defined(type):
+    """"Return True if a description for a mime type exists"""
+    try:
+        type = get_mime_type(file)
+        return True
+    except:
+        return False

gramps2/src/const.py.in

@@ -154,6 +154,13 @@ documenters  = [
 
 translators = _('TRANSLATORS: Translate this to your name in your native language')
 
+#-------------------------------------------------------------------------
+#
+# custom exception
+#
+#-------------------------------------------------------------------------
+ErrorSchemaInvalid = "GConf schema not properly installed"
+
 #-------------------------------------------------------------------------
 #
 # Constants

gramps2/src/gramps_main.py

@@ -77,6 +77,8 @@ import RelImage
 import RecentFiles
 import NameDisplay
 
+from GrampsMime import mime_type_is_defined
+
 from QuestionDialog import *
 
 from bsddb import db
@@ -131,8 +133,10 @@ class Gramps:
                 
         self.db = GrampsBSDDB.GrampsBSDDB()
 
+        try:
             GrampsCfg.loadConfig()
                 
+    
             if GrampsKeys.get_betawarn() == 0:
                 WarningDialog(_("Use at your own risk"),
                               _("This is an unstable development version of GRAMPS. "
@@ -145,8 +149,24 @@ class Gramps:
             self.RelClass = PluginMgr.relationship_class
             self.relationship = self.RelClass(self.db)
             self.gtop = gtk.glade.XML(const.gladeFile, "gramps", "gramps")
+        
             self.init_interface()
             
+        except const.ErrorSchemaInvalid, val:
+            ErrorDialog(_("Configuration error"),
+                        val + _("\n\nPossibly the installation of GRAMPS was incomplete."
+                          " Make sure the GConf schema of GRAMPS is properly installed."))
+            gtk.main_quit()
+            return
+            
+        if not mime_type_is_defined(const.app_gramps):
+            ErrorDialog(_("Configuration error"),
+                        _("A definition for the MIME-type %s could not be found"
+                          "\n\nPossibly the installation of GRAMPS was incomplete."
+                          " Make sure the MIME-types of GRAMPS are properly installed.") % const.app_gramps)
+            gtk.main_quit()
+            return
+
         ArgHandler.ArgHandler(self,args)
 
         # Don't show main window until ArgHandler is done.