client: removal of links through server; Fixes #228

Code is ugly on too many counts, but mainly:
1. repeats local change twice, once for temp and once for non-temp that
goes through server.
2. handles topo_diff reply expecting a single id instead of having a
general topo_diff reply handler that will take care of it, possibly
hanging a callback on it for graph update.

1 files changed, 5 insertions, 2 deletions

diff --git a/src/client/rz_core.js b/src/client/rz_core.js
index 7006af36..0ab227d8 100644
--- a/src/client/rz_core.js
+++ b/src/client/rz_core.js
@@ -380,9 +380,12 @@ function update_view__graph(no_relayout) {
                 dst = this.link.__dst;
 
             view.edge_info.on_delete(function () {
-                graph.removeLink(that.link);
-                update_view__graph(true);
                 view.edge_info.hide();
+                graph.removeLink(that.link, function() {
+                    update_view__graph(true);
+                }, function() {
+                    console.log("error: could not remove link");
+                });
             });
             view.edge_info.show(d);
             selection.update([src, dst]);