1 files changed, 11 insertions, 4 deletions
diff --git a/client/lib/scales.js b/client/lib/scales.js
index 1462504..fd7b5a7 100644
--- a/client/lib/scales.js
+++ b/client/lib/scales.js
@@ -120,6 +120,7 @@ const scales = [
 ].map( (opt) => new Intonation(opt) )
 
 let scale = scales[0]
+let handleChange = function(){}
 
 function build () {
   scales.forEach( (scale, i) => {
@@ -127,24 +128,30 @@ function build () {
     scale.heading.innerHTML = scale.name
     scale.heading.classList.add('heading')
     scale.heading.addEventListener('click', function(){
-      set_scale(i)
+      pick(i)
     })
     scale_list.appendChild(scale.heading)
   })
 
-  set_scale(0)
+  pick(0)
 }
 
-function set_scale (i){
+function pick (i){
   if (scale) {
     scale.heading.classList.remove('selected')
   }
   scale = scales[i]
   scale.heading.classList.add('selected')
+	handleChange(scale)
 }
 
 function current () {
   return scale
 }
 
-export default { scales, current, build }
+function onChange (fn) {
+	handleChange = fn
+}
+
+
+export default { scales, current, build, pick, onChange }