3 files changed, 7 insertions, 10 deletions
diff --git a/content_scripts/hud.coffee b/content_scripts/hud.coffee
index 92de975b..bbf7c5e9 100644
--- a/content_scripts/hud.coffee
+++ b/content_scripts/hud.coffee
@@ -23,13 +23,13 @@ HUD =
     @_showForDurationTimerId = setTimeout((=> @hide()), duration)
 
   show: (text) ->
-    return unless @enabled()
+    return unless @isReady()
     clearTimeout(@_showForDurationTimerId)
     @hudUI.show {name: "show", text}
     @tween.fade 1.0, 150
 
   showFindMode: (@findMode = null) ->
-    return unless @enabled()
+    return unless @isReady()
     @hudUI.show {name: "showFindMode", text: ""}
     @tween.fade 1.0, 150
 
@@ -83,12 +83,7 @@ HUD =
     @findMode.exit()
     postExit?()
 
-  isReady: do ->
-    ready = false
-    DomUtils.documentReady -> ready = true
-    -> ready and document.body != null and @hudUI?
-
-  enabled: -> true
+  isReady: -> @hudUI?.uiComponentIsReady
 
 class Tween
   opacity: 0
diff --git a/content_scripts/ui_component.coffee b/content_scripts/ui_component.coffee
index 4c9b18e1..92640eb2 100644
--- a/content_scripts/ui_component.coffee
+++ b/content_scripts/ui_component.coffee
@@ -1,4 +1,5 @@
 class UIComponent
+  uiComponentIsReady: false
   iframeElement: null
   iframePort: null
   showing: null
@@ -53,6 +54,8 @@ class UIComponent
         @postMessage name: "frameFocused", focusFrameId: request.focusFrameId
       false # Free up the sendResponse handler.
 
+    @styleSheetGetter.use => @iframePort.use => Utils.nextTick => @uiComponentIsReady = true
+
   # Posts a message (if one is provided), then calls continuation (if provided).  The continuation is only
   # ever called *after* the message has been posted.
   postMessage: (message = null, continuation = null) ->
diff --git a/content_scripts/vimium_frontend.coffee b/content_scripts/vimium_frontend.coffee
index 58cf6115..39e87648 100644
--- a/content_scripts/vimium_frontend.coffee
+++ b/content_scripts/vimium_frontend.coffee
@@ -138,8 +138,7 @@ installModes = ->
 initializeOnEnabledStateKnown = Utils.makeIdempotent ->
   installModes()
 
-initializeUIComponents = ->
- # Both of these are idempotent.
+initializeUIComponents = Utils.makeIdempotent -> DomUtils.documentReady ->
  HUD.init()
  Vomnibar.init() if DomUtils.isTopFrame()