[adblockpluschrome] Issue 3596 - Added support for CSS property filters to devtools panel

lib/devtools.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 "use strict";
 
-let {RegExpFilter, WhitelistFilter, ElemHideFilter} = require("filterClasses");
+let {RegExpFilter,
+     WhitelistFilter,
+     ElemHideFilter,
+     ElemHideEmulationFilter} = require("filterClasses");
+
 let {SpecialSubscription} = require("subscriptionClasses");
 let {FilterStorage} = require("filterStorage");
 let {defaultMatcher} = require("matcher");
 let {FilterNotifier} = require("filterNotifier");
 let {extractHostFromFrame} = require("url");
 let {port} = require("messaging");
 
 const nonRequestTypes = ["DOCUMENT", "ELEMHIDE", "GENERICBLOCK", "GENERICHIDE"];
 
 // Mapping of inspected tabs to their devpanel page
@@ skipping 122 matching lines @@
 /**
  * Logs active element hiding filters to the devtools panel.
  *
  * @param {Page}     page       The page the elements were hidden on
  * @param {string[]} selectors  The CSS selectors of active elemhide filters
  * @param {string}   docDomain  The IDN-decoded hostname of the document
  */
 function logHiddenElements(page, selectors, docDomain)
 {
   let panel = getActivePanel(page);
+  if (panel)
   {
     for (let subscription of FilterStorage.subscriptions)
     {
       if (subscription.disabled)
         continue;
 
       for (let filter of subscription.filters)
       {
-        if (!(filter instanceof ElemHideFilter))
+        if (!(filter instanceof ElemHideFilter) &&
+            !(filter instanceof ElemHideEmulationFilter))
           continue;
         if (selectors.indexOf(filter.selector) == -1)
           continue;
         if (!filter.isActiveOnDomain(docDomain))
           continue;
 
         addRecord(panel, {type: "ELEMHIDE", docDomain: docDomain}, filter);
       }
     }
   }
@@ skipping 194 matching lines @@
   panels[inspectedTabId] = {port: port, records: []};
 });
 
 port.on("devtools.traceElemHide", (message, sender) =>
 {
   logHiddenElements(
     sender.page, message.selectors,
     extractHostFromFrame(sender.frame)
   );
 });