Issue 2396 - Add CSS property filter message responder

messageResponder.js

Index: messageResponder.js
diff --git a/messageResponder.js b/messageResponder.js
index a6886cbbe74380c6901224cc87b8d405de5a8da8..e69f437e1669ac56ffffb96a31a026a53c619593 100644
--- a/messageResponder.js
+++ b/messageResponder.js
@@ -25,10 +25,12 @@
   var FilterStorage = require("filterStorage").FilterStorage;
   var FilterNotifier = require("filterNotifier").FilterNotifier;
   var defaultMatcher = require("matcher").defaultMatcher;
-  
+  var CSSRules = require("cssRules").CSSRules;
+
   var filterClasses = require("filterClasses");
   var Filter = filterClasses.Filter;
   var BlockingFilter = filterClasses.BlockingFilter;
+  var RegExpFilter = filterClasses.RegExpFilter;
   var Synchronizer = require("synchronizer").Synchronizer;
 
   var subscriptionClasses = require("subscriptionClasses");
@@ -194,13 +196,36 @@
         callback(filter instanceof BlockingFilter);
         break;
       case "filters.get":
+        if (message.what == "cssproperties")
+        {
+          if (!message.domain)
+          {
+            callback([]);
+            break;
+          }
+          var specificOnly = require("whitelisting").isFrameWhitelisted(

[Thomas Greiner, 2015/11/03 14:26:02]

I noticed that in "get-selectors" (see
https://hg.adblockplus.org/adblockpluschrome/file/tip/background.js#l302), it
also checks whether the frame is whitelisted to avoid injecting element hiding
filters into whitelisted frames. Because the issue is that content scripts are
running in every frame regardless of whether it is whitelisted or not.

[kzar, 2015/11/03 15:49:49]

Done.

+            sender.page, sender.frame, RegExpFilter.typeMap.GENERICHIDE
+          );
+          var filters = CSSRules.getRulesForDomain(message.domain, specificOnly);
+          filters = filters.map(function(filter)
+          {
+            return {
+              prefix: filter.selectorPrefix,
+              suffix: filter.selectorSuffix,
+              regexp: filter.regexpString
+            };
+          });
+          callback(filters);
+          break;
+        }
+
         var subscription = Subscription.fromURL(message.subscriptionUrl);
         if (!subscription)
         {
           callback([]);
           break;
         }
-        
+
         callback(subscription.filters.map(convertFilter));
         break;
       case "filters.importRaw":