Added a banner-style notification at the top of the page when Collusion blocks third-party content on a site. (The Options button is not implemented yet, so at the moment there's nothing you can do with this banner - it's just a placeholder.)

Author: Jono Xia

lib/main.js

@@ -469,6 +469,31 @@ function initCollusion() {
       console.log("Blocking page load of blocklisted site " + domain);
       channel.loadFlags = Ci.nsICachingChannel.LOAD_ONLY_FROM_CACHE;
       channel.cancel(Cr.NS_ERROR_FAILURE);
+
+      // Pop a banner notification that content was blocked, with an "allow" button.
+      var message = "Collusion has blocked third-party content on this site";
+      var popupButtonText = "Options";
+      var popupButtonAccesskey = "O";
+      var windowUtils = require("window-utils");
+      var window = windowUtils.activeBrowserWindow;
+      var thistab = window.gBrowser.mCurrrentBrowser;
+      var notificationBox = window.gBrowser.getNotificationBox(thistab);
+      var notification = notificationBox.getNotificationWithValue("popup-blocked");
+      if (notification) {
+         notification.label = message;
+      } else {
+           var buttons = [{
+             label: popupButtonText,
+             accessKey: popupButtonAccesskey,
+             popup: "blockedPopupOptions",
+             callback: null
+           }];
+
+           const priority = notificationBox.PRIORITY_WARNING_MEDIUM;
+           notificationBox.appendNotification(message, "popup-blocked",
+                                              "chrome://browser/skin/Info.png",
+                                              priority, buttons);
+         }
     }
   });