Functional prefs implementation

src/FilterEngine.cpp

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2013 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/>.
  */
 
 #include <algorithm>
 #include <cctype>
 #include <functional>
 #include <string>
 
 #include <AdblockPlus.h>
+#include "JsContext.h"
 #include "Thread.h"
 
 using namespace AdblockPlus;
 
 extern std::string jsSources[];
 
 Filter::Filter(JsValuePtr value)
     : JsValue(value)
 {
   if (!IsObject())
@@ skipping 97 matching lines @@
 bool Subscription::operator==(const Subscription& subscription) const
 {
   return GetProperty("url")->AsString() == subscription.GetProperty("url")->AsString();
 }
 
 FilterEngine::FilterEngine(JsEnginePtr jsEngine)
     : jsEngine(jsEngine), initialized(false), firstRun(false)
 {
   jsEngine->SetEventCallback("init", std::tr1::bind(&FilterEngine::InitDone,
       this, std::tr1::placeholders::_1));
-  for (int i = 0; !jsSources[i].empty(); i += 2)
-    jsEngine->Evaluate(jsSources[i + 1], jsSources[i]);
+
+  {
+    // Lock the JS engine while we are loading scripts, no timeouts should fire
+    // until we are done.
+    const JsContext context(jsEngine);
+    for (int i = 0; !jsSources[i].empty(); i += 2)
+      jsEngine->Evaluate(jsSources[i + 1], jsSources[i]);
+  }
 
   // TODO: This should really be implemented via a conditional variable
   while (!initialized)
     ::Sleep(10);
 }
 
 void FilterEngine::InitDone(JsValueList& params)
 {
   jsEngine->RemoveEventCallback("init");
   initialized = true;
@@ skipping 46 matching lines @@
   JsValuePtr func = jsEngine->Evaluate("API.getRecommendedSubscriptions");
   JsValueList values = func->Call()->AsList();
   std::vector<SubscriptionPtr> result;
   for (JsValueList::iterator it = values.begin(); it != values.end(); it++)
     result.push_back(SubscriptionPtr(new Subscription(*it)));
   return result;
 }
 
 AdblockPlus::FilterPtr FilterEngine::Matches(const std::string& url,
     const std::string& contentType,
-    const std::string& documentUrl)
+    const std::string& documentUrl) const
 {
   JsValuePtr func = jsEngine->Evaluate("API.checkFilterMatch");
   JsValueList params;
   params.push_back(jsEngine->NewValue(url));
   params.push_back(jsEngine->NewValue(contentType));
   params.push_back(jsEngine->NewValue(documentUrl));
   JsValuePtr result = func->Call(params);
   if (!result->IsNull())
     return FilterPtr(new Filter(result));
   else
     return FilterPtr();
 }
 
 std::vector<std::string> FilterEngine::GetElementHidingSelectors(const std::string& domain) const
 {
   JsValuePtr func = jsEngine->Evaluate("API.getElementHidingSelectors");
   JsValueList params;
   params.push_back(jsEngine->NewValue(domain));
   JsValueList result = func->Call(params)->AsList();
   std::vector<std::string> selectors;
   for (JsValueList::iterator it = result.begin(); it != result.end(); ++it)
     selectors.push_back((*it)->AsString());
   return selectors;
 }
+
+JsValuePtr FilterEngine::GetPref(const std::string& pref) const
+{
+  JsValuePtr func = jsEngine->Evaluate("API.getPref");
+  JsValueList params;
+  params.push_back(jsEngine->NewValue(pref));
+  return func->Call(params);
+}
+
+void FilterEngine::SetPref(const std::string& pref, JsValuePtr value)
+{
+  JsValuePtr func = jsEngine->Evaluate("API.setPref");
+  JsValueList params;
+  params.push_back(jsEngine->NewValue(pref));
+  params.push_back(value);
+  func->Call(params);
+}