Merge pull request #9 from ros-visualization/cleanup_publishers_on_re…

…store

Cleaning up publishers on restore

src/rqt_publisher/publisher.py

@@ -388,6 +388,10 @@ def save_settings(self, plugin_settings, instance_settings):
         instance_settings.set_value('publishers', repr(publisher_copies))
 
     def restore_settings(self, plugin_settings, instance_settings):
+        # If changing perspectives and rqt_publisher is already loaded, we need to clean up the
+        # previously existing publishers
+        self.clean_up_publishers()
+
         publishers = eval(instance_settings.value('publishers', '[]'))
         for publisher in publishers:
             self._add_publisher(publisher)