prevent activating disabled fields

coffee/chosen.jquery.coffee

@@ -127,7 +127,8 @@ class Chosen extends AbstractChosen
       @selected_item.bind "focus.chosen", @activate_action if !@is_multiple
 
   container_mousedown: (evt) ->
-    if !@is_disabled
+    return if @is_disabled
+
     if evt and evt.type is "mousedown" and not @results_showing
       evt.preventDefault()
 
@@ -168,6 +169,8 @@ class Chosen extends AbstractChosen
     this.search_field_scale()
 
   activate_field: ->
+    return if @is_disabled
+
     @container.addClass "chosen-container-active"
     @active_field = true
 
@@ -269,7 +272,7 @@ class Chosen extends AbstractChosen
       @form_field_label = $("label[for='#{@form_field.id}']") #next check for a for=#{id}
 
     if @form_field_label.length > 0
-      @form_field_label.bind 'click.chosen', (evt) => if @is_multiple then this.container_mousedown(evt) else this.activate_field()
+      @form_field_label.bind 'click.chosen', this.label_click_handler
 
   show_search_field_default: ->
     if @is_multiple and this.choices_count() < 1 and not @active_field

coffee/chosen.proto.coffee

@@ -122,7 +122,8 @@ class @Chosen extends AbstractChosen
       @selected_item.observe "focus", @activate_action if !@is_multiple
 
   container_mousedown: (evt) ->
-    if !@is_disabled
+    return if @is_disabled
+
     if evt and evt.type is "mousedown" and not @results_showing
       evt.stop()
 
@@ -162,6 +163,8 @@ class @Chosen extends AbstractChosen
     this.search_field_scale()
 
   activate_field: ->
+    return if @is_disabled
+
     @container.addClassName "chosen-container-active"
     @active_field = true
 
@@ -260,7 +263,7 @@ class @Chosen extends AbstractChosen
       @form_field_label = $$("label[for='#{@form_field.id}']").first() #next check for a for=#{id}
 
     if @form_field_label?
-      @form_field_label.observe "click", (evt) => if @is_multiple then this.container_mousedown(evt) else this.activate_field()
+      @form_field_label.observe "click", this.label_click_handler
 
   show_search_field_default: ->
     if @is_multiple and this.choices_count() < 1 and not @active_field

coffee/lib/abstract-chosen.coffee

@@ -69,6 +69,12 @@ class AbstractChosen
       @active_field = false
       setTimeout (=> this.blur_test()), 100
 
+  label_click_handler: (evt) =>
+    if @is_multiple
+      this.container_mousedown(evt)
+    else
+      this.activate_field()
+
   results_option_build: (options) ->
     content = ''
     shown_results = 0