add annotation accessor to labeltool object

sloth/core/commands.py

@@ -65,8 +65,7 @@ class DumpLabelsCommand(BaseCommand):
             raise CommandError("Expect exactly 1 argument.")
 
         self.labeltool.loadAnnotations(args[0])
-        # TODO add better accessor the the labeltool
-        pprint(self.labeltool._container.annotations())
+        pprint(self.labeltool.annotations())
 
 
 class AppendFilesCommand(BaseCommand):

sloth/core/labeltool.py

@@ -235,6 +235,11 @@ class LabelTool(QObject):
         self.statusMessage.emit(msg)
         self.annotationsLoaded.emit()
 
+    def annotations(self):
+        if self._model is None:
+            return None
+        return self._model.root().getAnnotations()
+
     def saveAnnotations(self, fname):
         success = False
         try: