Multiselection included. (Without input validation).

workflows/affy_workflow.py

@@ -73,6 +73,8 @@ class DatasetSaveFunction(workflow.Function):
         if not data:
             logger.log("notice", "No data to save.")
             return
+        else:
+            data = data[0]
 
         chooser = gtk.FileChooserDialog(title="Save pickled data...", parent=None,
                                         action=gtk.FILE_CHOOSER_ACTION_SAVE,
@@ -101,7 +103,7 @@ class CelFileImportFunction(workflow.Function):
     def __init__(self):
         workflow.Function.__init__(self, 'cel_import', 'Import Affy')
 
-    def run(self, data):
+    def run(self, (data,)):
         import rpy
         chooser = gtk.FileChooserDialog(title="Select cel files...", parent=None,
                                         action=gtk.FILE_CHOOSER_ACTION_OPEN,
@@ -150,7 +152,7 @@ class PCAFunction(workflow.Function):
         workflow.Function.__init__(self, 'pca', 'PCA')
         self._workflow = wf
 
-    def run(self, data):
+    def run(self, (data,)):
         import rpy
         
         dim_2, dim_1 = data.get_dim_names()