Issue 4577 - Remove Safari support

safari/contentBlocking.js

Index: safari/contentBlocking.js
diff --git a/safari/contentBlocking.js b/safari/contentBlocking.js
deleted file mode 100644
index 9daf99701dd1a7e9068dddc7754cc2783aaf839e..0000000000000000000000000000000000000000
--- a/safari/contentBlocking.js
+++ /dev/null
@@ -1,162 +0,0 @@
-/*
- * 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/>.
- */
-
-/** @module contentBlocking */
-
-"use strict";
-
-let {Prefs} = require("prefs");
-let {ContentBlockerList} = require("abp2blocklist");
-let {FilterStorage} = require("filterStorage");
-let {FilterNotifier} = require("filterNotifier");
-let {port} = require("messaging");
-
-let contentBlockingSupported = "setContentBlocker" in safari.extension;
-let legacyAPISupported = new Promise(resolve =>
-{
-  function onLegacyAPISupported(msg, sender)
-  {
-    port.off("safari.legacyAPISupported", onLegacyAPISupported);
-    resolve(msg.legacyAPISupported);
-  }
-  port.on("safari.legacyAPISupported", onLegacyAPISupported);
-});
-let contentBlockingActive = false;
-let afterContentBlockingFinished = null;
-let contentBlockListDirty = true;
-let lastSetContentBlockerError;
-
-function clearBlockCounters()
-{
-  ext.pages.query({}, pages =>
-  {
-    for (let page of pages)
-      page.browserAction.setBadge();
-  });
-}
-
-function setContentBlocker(callback)
-{
-  // When given the same rules as last time setContentBlocker will always give
-  // null (success) to the callback, even when there was actually an error. We
-  // cache the last result therefore so that we can provide a consistent result
-  // and also to avoid wastefully regenerating an identical blocklist.
-  if (!contentBlockListDirty)
-  {
-    callback(lastSetContentBlockerError);
-    return;
-  }
-
-  let contentBlockerList = new ContentBlockerList();
-  for (let subscription of FilterStorage.subscriptions)
-    if (!subscription.disabled)
-      for (let filter of subscription.filters)
-        contentBlockerList.addFilter(filter);
-
-  contentBlockListDirty = false;
-  safari.extension.setContentBlocker(
-    // There is a strange bug in setContentBlocker for Safari 9 where if both
-    // the callback parameter is provided and the rules aren't converted to a
-    // JSON string it fails. Worse still it actually performs the callback twice
-    // too, firstly with an empty string and then with an Error:
-    //   "Extension compilation failed: Failed to parse the JSON String."
-    // To mitigate this we convert the rules to JSON here and also ignore
-    // callback values of "". (Usually the callback is performed with either
-    // null for success or an Error on failure.)
-    // Bug #26322821 filed on bugreport.apple.com
-    JSON.stringify(contentBlockerList.generateRules()),
-    function(error)
-    {
-      if (error == "")
-        return;
-
-      lastSetContentBlockerError = error;
-      callback(error);
-    }
-  );
-}
-
-function updateContentBlocker(isStartup, legacyAPISupported)
-{
-  afterContentBlockingFinished = new Promise(resolve =>
-  {
-    setContentBlocker(error =>
-    {
-      if (error instanceof Error)
-      {
-        let suppressErrorMessage = false;
-
-        // If the content blocking API fails the first time it's used the
-        // legacy blocking API (if available) won't have been disabled.
-        if (!contentBlockingActive && legacyAPISupported)
-        {
-          Prefs.safariContentBlocker = false;
-          // If content blocking failed on startup and we're switching back to
-          // the legacy API anyway we don't need to show an error message.
-          if (isStartup)
-            suppressErrorMessage = true;
-        }
-
-        if (!suppressErrorMessage)
-          alert(error.message);
-      }
-      else if (!contentBlockingActive)
-      {
-        contentBlockingActive = true;
-        clearBlockCounters();
-      }
-
-      resolve(contentBlockingActive);
-      afterContentBlockingFinished = null;
-    });
-  });
-}
-
-if (contentBlockingSupported)
-{
-  Promise.all([Prefs.untilLoaded,
-               FilterNotifier.once("load"),
-               legacyAPISupported]).then(resolvedValues =>
-  {
-    let legacyAPISupported = resolvedValues[2];
-    if (!legacyAPISupported)
-      Prefs.safariContentBlocker = true;
-
-    if (Prefs.safariContentBlocker)
-      updateContentBlocker(true, legacyAPISupported);
-
-    Prefs.on("safariContentBlocker", () =>
-    {
-      if (!contentBlockingActive && Prefs.safariContentBlocker)
-        updateContentBlocker(false, legacyAPISupported);
-    });
-
-    FilterNotifier.on("filter.behaviorChanged", () =>
-    {
-      contentBlockListDirty = true;
-      if (contentBlockingActive)
-        updateContentBlocker(false, legacyAPISupported);
-    });
-  });
-}
-
-port.on("safari.contentBlockingActive", (msg, sender) =>
-{
-  if (!contentBlockingActive && afterContentBlockingFinished)
-    return afterContentBlockingFinished;
-  return contentBlockingActive;
-});