client/model/graph: add activityBus

Very similar to Diff Bus, just includes initial clone commits. Will
remove it in the future.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/client/model/graph.js b/src/client/model/graph.js
index 99c63886..aa3f3b51 100644
--- a/src/client/model/graph.js
+++ b/src/client/model/graph.js
@@ -14,6 +14,7 @@ function Graph(spec) {
         id_to_link_map,
         id_to_link_id_set,
         diffBus = new Bacon.Bus(),
+        activityBus = new Bacon.Bus(),
         cached_links,
         invalidate_links = true,
         cached_nodes,
@@ -34,6 +35,10 @@ function Graph(spec) {
     // bus contains the server events, not the user events (most of the time the same just with delay).
     this.diffBus = diffBus;
 
+    // Same as diffBus, but includes operations done in the past, loaded when
+    // the document is loaded (commit log)
+    this.activityBus = activityBus;
+
     var links_forEach = function (f) {
         for (var link_key in id_to_link_map) {
             f(id_to_link_map[link_key]);