adding touch events for chosen-single to make it compatible with mobile browsers when using libraries like FastClic.js

adding the touch events to the proto version

fixing a typo on chosen.proto.coffee

Author: Mauricio Gomez Aguinaga

coffee/chosen.jquery.coffee

@@ -66,6 +66,9 @@ class Chosen extends AbstractChosen
     @form_field_jq.trigger("chosen:ready", {chosen: this})
 
   register_observers: ->
+    @container.bind 'touchstart.chosen', (evt) => this.container_mousedown(evt); return
+    @container.bind 'touchend.chosen', (evt) => this.container_mouseup(evt); return
+
     @container.bind 'mousedown.chosen', (evt) => this.container_mousedown(evt); return
     @container.bind 'mouseup.chosen', (evt) => this.container_mouseup(evt); return
     @container.bind 'mouseenter.chosen', (evt) => this.mouse_enter(evt); return

coffee/chosen.proto.coffee

@@ -49,6 +49,9 @@ class @Chosen extends AbstractChosen
     @form_field.fire("chosen:ready", {chosen: this})
 
   register_observers: ->
+    @container.observe "touchstart", (evt) => this.container_mousedown(evt)
+    @container.observe "touchend", (evt) => this.container_mouseup(evt)
+
     @container.observe "mousedown", (evt) => this.container_mousedown(evt)
     @container.observe "mouseup", (evt) => this.container_mouseup(evt)
     @container.observe "mouseenter", (evt) => this.mouse_enter(evt)