diff layer/Layer.h @ 583:4c484636d5ec

Record and show any error that occurs during layer processing (e.g. spectrogram layer runs out of disc space for feature files)

--- a/layer/Layer.h	Thu Apr 07 15:20:12 2011 +0100
+++ b/layer/Layer.h	Thu Apr 14 15:21:21 2011 +0100
@@ -339,6 +339,13 @@
      */
     virtual int getCompletion(View *) const { return 100; }
 
+    /**
+     * Return an error string if any errors have occurred while
+     * loading or processing data for the given view.  Return the
+     * empty string if no error has occurred.
+     */
+    virtual QString getError(View *) const { return ""; }
+
     virtual void setObjectName(const QString &name);
 
     /**