[gimp: 6/27] app: Add file_procedure_in_group()

[Martin Nordholts <martinn src gnome org>]

commit e9ed9ce6cba3892ac2f69195e534482f94aee782
Author: Martin Nordholts <martinn src gnome org>
Date:   Sat Apr 25 15:28:08 2009 +0200

    app: Add file_procedure_in_group()
    
    Add file_procedure_in_group() which is a helper function to determine
    if a file procedure is in the Open, Save or Export group.
---
 app/file/file-procedure.c |   35 +++++++++++++++++++++++++++++++++++
 app/file/file-procedure.h |   25 ++++++++++++++++++-------
 2 files changed, 53 insertions(+), 7 deletions(-)

diff --git a/app/file/file-procedure.c b/app/file/file-procedure.c
index f80a697..d32eec5 100644
--- a/app/file/file-procedure.c
+++ b/app/file/file-procedure.c
@@ -219,6 +219,41 @@ file_procedure_find_by_extension (GSList      *procs,
   return file_proc_find_by_extension (procs, uri, FALSE);
 }
 
+gboolean
+file_procedure_in_group (GimpPlugInProcedure *file_proc,
+                         FileProcedureGroup   group)
+{
+  const gchar *name        = gimp_object_get_name (GIMP_OBJECT (file_proc));
+  gboolean     is_xcf_save = FALSE;
+  gboolean     is_filter   = FALSE;
+
+  is_xcf_save = (strcmp (name, "gimp-xcf-save") == 0);
+
+  is_filter   = (strcmp (name, "file-gz-save")  == 0 ||
+                 strcmp (name, "file-bz2-save") == 0);
+
+  switch (group)
+    {
+    case FILE_PROCEDURE_GROUP_SAVE:
+      /* Only .xcf shall pass */
+      /* FIXME: Handle .gz and .bz2 properly */
+      return is_xcf_save || is_filter;
+
+    case FILE_PROCEDURE_GROUP_EXPORT:
+      /* Anything but .xcf shall pass */
+      /* FIXME: Handle .gz and .bz2 properly */
+      return ! is_xcf_save || is_filter;
+
+    case FILE_PROCEDURE_GROUP_OPEN:
+      /* No filter applied for Open */
+      return TRUE;
+
+    default:
+    case FILE_PROCEDURE_GROUP_ANY:
+      return TRUE;
+    }
+}
+
 
 /*  private functions  */
 
diff --git a/app/file/file-procedure.h b/app/file/file-procedure.h
index 1dd0841..7df1c2e 100644
--- a/app/file/file-procedure.h
+++ b/app/file/file-procedure.h
@@ -21,13 +21,24 @@
 #define __FILE_PROCEDURE_H__
 
 
-GimpPlugInProcedure * file_procedure_find              (GSList       *procs,
-                                                        const gchar  *filename,
-                                                        GError      **error);
-GimpPlugInProcedure * file_procedure_find_by_prefix    (GSList       *procs,
-                                                        const gchar  *uri);
-GimpPlugInProcedure * file_procedure_find_by_extension (GSList       *procs,
-                                                        const gchar  *uri);
+typedef enum
+{
+  FILE_PROCEDURE_GROUP_ANY,
+  FILE_PROCEDURE_GROUP_OPEN,
+  FILE_PROCEDURE_GROUP_SAVE,
+  FILE_PROCEDURE_GROUP_EXPORT
+} FileProcedureGroup;
+
+
+GimpPlugInProcedure *file_procedure_find              (GSList               *procs,
+                                                       const gchar          *filename,
+                                                       GError              **error);
+GimpPlugInProcedure *file_procedure_find_by_prefix    (GSList               *procs,
+                                                       const gchar          *uri);
+GimpPlugInProcedure *file_procedure_find_by_extension (GSList               *procs,
+                                                       const gchar          *uri);
+gboolean             file_procedure_in_group          (GimpPlugInProcedure  *file_proc,
+                                                       FileProcedureGroup    group);
 
 
 #endif /* __FILE_PROCEDURE_H__ */