Issue 5648 - Include lib/popupBlocker.js on Firefox

lib/popupBlocker.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present 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
@@ skipping 70 matching lines @@
       checkPotentialPopup(details.tabId, popup);
   }
 }
 
 function onCompleted(details)
 {
   if (details.frameId == 0 && details.url != "about:blank")
     forgetPopup(details.tabId);
 }
 
-chrome.webNavigation.onCreatedNavigationTarget.addListener(details =>
+// Versions of Firefox before 54 do not support
+// webNavigation.onCreatedNavigationTarget
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1190687
+if ("onCreatedNavigationTarget" in chrome.webNavigation)
 {
-  if (loadingPopups.size == 0)
+  chrome.webNavigation.onCreatedNavigationTarget.addListener(details =>
   {
-    chrome.webRequest.onBeforeRequest.addListener(
-      onPopupURLChanged,
-      {
-        urls: ["http://*/*", "https://*/*"],
-        types: ["main_frame"]
-      }
-    );
-    chrome.webNavigation.onCommitted.addListener(onPopupURLChanged);
-    chrome.webNavigation.onCompleted.addListener(onCompleted);
-    chrome.tabs.onRemoved.addListener(forgetPopup);
-  }
+    if (loadingPopups.size == 0)
+    {
+      chrome.webRequest.onBeforeRequest.addListener(
+        onPopupURLChanged,
+        {
+          urls: ["http://*/*", "https://*/*"],
+          types: ["main_frame"]
+        }
+      );
+      chrome.webNavigation.onCommitted.addListener(onPopupURLChanged);
+      chrome.webNavigation.onCompleted.addListener(onCompleted);
+      chrome.tabs.onRemoved.addListener(forgetPopup);
+    }
 
-  let popup = {
-    url: details.url,
-    sourcePage: new ext.Page({id: details.sourceTabId}),
-    sourceFrame: null
-  };
+    let popup = {
+      url: details.url,
+      sourcePage: new ext.Page({id: details.sourceTabId}),
+      sourceFrame: null
+    };
 
-  loadingPopups.set(details.tabId, popup);
+    loadingPopups.set(details.tabId, popup);
 
-  let frame = ext.getFrame(details.sourceTabId, details.sourceFrameId);
+    let frame = ext.getFrame(details.sourceTabId, details.sourceFrameId);
 
-  if (checkWhitelisted(popup.sourcePage, frame))
-  {
-    forgetPopup(details.tabId);
-  }
-  else
-  {
-    popup.sourceFrame = frame;
-    checkPotentialPopup(details.tabId, popup);
-  }
-});
+    if (checkWhitelisted(popup.sourcePage, frame))
+    {
+      forgetPopup(details.tabId);
+    }
+    else
+    {
+      popup.sourceFrame = frame;
+      checkPotentialPopup(details.tabId, popup);
+    }
+  });
+}