[pitivi] A bunch more minor fixes

[Edward Hervey <edwardrv src gnome org>]

commit 018e4e6fb21ced268ce0bd067a0a49d991167670
Author: Edward Hervey <bilboed bilboed com>
Date:   Sat Feb 14 01:41:20 2009 +0100

    A bunch more minor fixes
---
 pitivi/formatters/base.py   |   20 +++++++++++++++-----
 pitivi/formatters/format.py |    4 +++-
 2 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/pitivi/formatters/base.py b/pitivi/formatters/base.py
index e1d402d..a3c1992 100644
--- a/pitivi/formatters/base.py
+++ b/pitivi/formatters/base.py
@@ -31,7 +31,7 @@ class FormatterError(Exception):
 class FormatterLoadError(FormatterError):
     pass
 
-class FormatterStoreError(FormatterError):
+class FormatterSaveError(FormatterError):
     pass
 
 # FIXME : How do we handle interaction with the UI ??
@@ -43,11 +43,11 @@ class Formatter(object):
     Provides convenience methods for storing and loading
     Project files.
 
-    @cvar description: Description of the formatter.
+    @cvar description: Description of the format.
     @type description: C{str}
     """
 
-    description = "Base formatter"
+    description = "Description of the format"
 
     def loadProject(self, location):
         """
@@ -71,7 +71,7 @@ class Formatter(object):
         @type location: L{str}
         @param location: The location where to store the project. Needs to be
         an absolute URI.
-        @raise FormatterStoreError: If the file couldn't be properly stored.
+        @raise FormatterSaveError: If the file couldn't be properly stored.
         """
         raise FormatterSaveError("No Saving feature")
 
@@ -86,8 +86,18 @@ class Formatter(object):
         """
         raise NotImplementedError
 
+class LoadOnlyFormatter(Formatter):
+    def saveProject(self, project, location):
+        raise FormatterSaveError("No Saving feature")
+
+
+class SaveOnlyFormatter(Formatter):
+    def saveProject(self, project, location):
+        raise FormatterSaveError("No Saving feature")
+
+
 class DefaultFormatter(Formatter):
 
-    description = "Default Formatter"
+    description = "PiTiVi default file format"
 
     pass
diff --git a/pitivi/formatters/format.py b/pitivi/formatters/format.py
index d7cf9ce..1930182 100644
--- a/pitivi/formatters/format.py
+++ b/pitivi/formatters/format.py
@@ -23,6 +23,8 @@
 High-level tools for using Formatters
 """
 
+# FIXME : We need a registry of all available formatters
+
 def load_project(uri, formatter=None):
     """
     Load the project from the given location.
@@ -54,7 +56,7 @@ def save_project(project, uri, formatter=None):
     @type formatter: C{Formatter}
     @param formatter: The C{Formatter} to use to store the project if specified.
     If it is not specified, then it will be saved at its original format.
-    @raise FormatterStoreError: If the file couldn't be properly stored.
+    @raise FormatterSaveError: If the file couldn't be properly stored.
     @return: Whether the file was successfully stored
     @rtype: L{bool}
     """