issue #1155 - Don't allow displaying icon text with Australis theme

lib/main.js

 /*
  * This Source Code is subject to the terms of the Mozilla Public License
  * version 2.0 (the "License"). You can obtain a copy of the License at
  * http://mozilla.org/MPL/2.0/.
  */
 
 Cu.import("resource://gre/modules/Services.jsm");
 
 let {Prefs} = require("prefs");
 let {WindowObserver} = require("windowObserver");
 
+var isAustralis = false;
+try
+{
+  Cu.import("resource:///modules/CustomizableUI.jsm", null);
+  isAustralis = true;
+} catch(e) {}
+
 var WindowFeature =
 {
   observer: null,
 
   init: function()
   {
     if (!this.observer)
       this.observer = new WindowObserver(this, "ready");
   },
 
@@ skipping 95 matching lines @@
   __proto__: StylesheetFeature,
   stylesheet: "chrome://abpcustomization/content/oneLineSubscriptions.css"
 };
 
 var RemoveActionsButton =
 {
   __proto__: StylesheetFeature,
   stylesheet: "chrome://abpcustomization/content/noActionButton.css"
 };
 
+var AddonPageAustralisStyles =
+{
+  __proto__: StylesheetFeature,
+  stylesheet: "chrome://abpcustomization/content/addonPageAustralisStyles.css"
+};
+
 var ToolbarIconDisplay =
 {
   __proto__: StylesheetFeature,
   get template()
   {
     let request = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"].createInstance(Ci.nsIXMLHttpRequest);
     request.open("GET", "chrome://abpcustomization/content/toolbarIconDisplay.css", false);
     request.overrideMimeType("text/plain");
     request.send();
     let result = request.responseText;
@@ skipping 28 matching lines @@
   stylesheet: "chrome://abpcustomization/content/hideMenus.css"
 };
 
 let features =
 {
   "addon-page-styles": AddonPageStyles,
   "vertical-preferences-layout": VerticalPreferencesLayout,
   "preferences-one-line-subscriptions": OneLineSubscriptions,
   "preferences-remove-actions-button": RemoveActionsButton,
   "toolbar-icon-display": ToolbarIconDisplay,
+  "addon-page-australis-styles": AddonPageAustralisStyles,
   "green-icon": GreenIcon,
   "remove-menus": RemoveMenus
 };
 
 function updateFeature(name)
 {
   if (name in features)
   {
     let enabled;
     if (name == "addon-page-styles")
       enabled = true;
+    else if (name == "toolbar-icon-display" && isAustralis)
+      enabled = false;
+    else if (name == "addon-page-australis-styles")
+      enabled = isAustralis;
     else
       enabled = Prefs[name];
 
     if (enabled)
       features[name].init();
     else
       features[name].shutdown();
   }
 }
 
-
 // Initialize features and make sure to update them on changes
 for (let feature in features)
   updateFeature(feature);
 
 Prefs.addListener(updateFeature);