Merge pull request #935 from ioam/dmap_event

Added event method to DynamicMap

holoviews/core/spaces.py

@@ -536,6 +536,22 @@ def _validate_key(self, key):
                     raise StopIteration("Key value %s above upper bound %s"
                                         % (val, high))
 
+    def event(self, trigger=True, **kwargs):
+        """
+        This method allows any of the available stream parameters to be
+        updated in an event.
+        """
+        stream_params = set(util.stream_parameters(self.streams))
+        updated_streams = []
+        for stream in self.streams:
+            overlap = set(stream.params().keys()) & stream_params & set(kwargs.keys())
+            if overlap:
+                stream.update(**dict({k:kwargs[k] for k in overlap}, trigger=False))
+                updated_streams.append(stream)
+
+        if updated_streams and trigger:
+            updated_streams[0].trigger(updated_streams)
+
 
     def _style(self, retval):
         """