introduce signal, start using in history; use consts for signal name

introduces two new modules:
scripts/consts.js
scripts/signal.js

signal is a thin wrapper for jquery('window').on and
jquery('window').trigger, which seems like an adaquete signal library -
there are faster things around, but why introduce another dependency.

1 files changed, 6 insertions, 1 deletions

diff --git a/scripts/history.js b/scripts/history.js
index a3127c75..e99cbb08 100644
--- a/scripts/history.js
+++ b/scripts/history.js
@@ -15,11 +15,16 @@
 // ReferenceError: __commandLineAPI is not defined
 //var ActionEnum = Enum();
 
-define('history', ['FileSaver'], function(saveAs) {
+define('history', ['jquery', 'FileSaver', 'consts', 'signal'],
+    function($, saveAs, consts, signal) {
 
 function History(user) {
+    var that = this;
     this.records = [];
     this.user = user;
+    signal.slot(consts.RECORD_LINKS, function(obj) {
+        return that.record_links(obj)
+    });
 }
 
 var ACTION_KEYSTROKES = 'ACTION_KEYSTROKES';