Ensure the "Filter lists" pane is in sync with update status

Related issue:
- https://github.com/gorhill/uBlock/issues/2394

Additionally, I added a new advanced setting to control
how long after launch an auto-update session should be
started -- value is in seconds:

    autoUpdateDelayAfterLaunch 180

src/js/3p-filters.js

@@ -299,6 +299,10 @@ const renderFilterLists = function(soft) {
         if ( !soft ) {
             filteringSettingsHash = hashFromCurrentFromSettings();
         }
+
+        // https://github.com/gorhill/uBlock/issues/2394
+        document.body.classList.toggle('updating', listDetails.isUpdating);
+
         renderWidgets();
     };
 

src/js/assets.js

@@ -916,15 +916,16 @@ api.rmrf = function() {
 /******************************************************************************/
 
 // Asset updater area.
-var updaterStatus,
+const updaterAssetDelayDefault = 120000;
+const updaterUpdated = [];
+const updaterFetched = new Set();
+
+let updaterStatus,
     updaterTimer,
-    updaterAssetDelayDefault = 120000,
     updaterAssetDelay = updaterAssetDelayDefault,
-    updaterUpdated = [],
-    updaterFetched = new Set(),
     noRemoteResources;
 
-var updateFirst = function() {
+const updateFirst = function() {
     // https://github.com/gorhill/uBlock/commit/126110c9a0a0630cd556f5cb215422296a961029
     //   Firefox extension reviewers do not want uBO/webext to fetch its own
     //   scriptlets/resources asset from the project's own repo (github.com).
@@ -939,31 +940,33 @@ var updateFirst = function() {
     }
     updaterStatus = 'updating';
     updaterFetched.clear();
-    updaterUpdated = [];
+    updaterUpdated.length = 0;
     fireNotification('before-assets-updated');
     updateNext();
 };
 
-var updateNext = function() {
-    var assetDict, cacheDict;
+const updateNext = function() {
+    let assetDict, cacheDict;
 
     // This will remove a cached asset when it's no longer in use.
-    var garbageCollectOne = function(assetKey) {
-        var cacheEntry = cacheDict[assetKey];
+    const garbageCollectOne = function(assetKey) {
+        const cacheEntry = cacheDict[assetKey];
         if ( cacheEntry && cacheEntry.readTime < assetCacheRegistryStartTime ) {
             assetCacheRemove(assetKey);
         }
     };
 
-    var findOne = function() {
-        var now = Date.now(),
-            assetEntry, cacheEntry;
-        for ( var assetKey in assetDict ) {
-            assetEntry = assetDict[assetKey];
+    const findOne = function() {
+        const now = Date.now();
+        for ( const assetKey in assetDict ) {
+            const assetEntry = assetDict[assetKey];
             if ( assetEntry.hasRemoteURL !== true ) { continue; }
             if ( updaterFetched.has(assetKey) ) { continue; }
-            cacheEntry = cacheDict[assetKey];
-            if ( cacheEntry && (cacheEntry.writeTime + assetEntry.updateAfter * 86400000) > now ) {
+            const cacheEntry = cacheDict[assetKey];
+            if (
+                cacheEntry &&
+                (cacheEntry.writeTime + assetEntry.updateAfter * 86400000) > now
+            ) {
                 continue;
             }
             // Update of user scripts/resources forbidden?
@@ -982,7 +985,7 @@ var updateNext = function() {
         }
     };
 
-    var updatedOne = function(details) {
+    const updatedOne = function(details) {
         if ( details.content !== '' ) {
             updaterUpdated.push(details.assetKey);
             if ( details.assetKey === 'assets.json' ) {
@@ -998,8 +1001,8 @@ var updateNext = function() {
         }
     };
 
-    var updateOne = function() {
-        var assetKey = findOne();
+    const updateOne = function() {
+        const assetKey = findOne();
         if ( assetKey === undefined ) {
             return updateDone();
         }
@@ -1020,18 +1023,18 @@ var updateNext = function() {
     });
 };
 
-var updateDone = function() {
-    var assetKeys = updaterUpdated.slice(0);
+const updateDone = function() {
+    const assetKeys = updaterUpdated.slice(0);
     updaterFetched.clear();
-    updaterUpdated = [];
+    updaterUpdated.length = 0;
     updaterStatus = undefined;
     updaterAssetDelay = updaterAssetDelayDefault;
     fireNotification('after-assets-updated', { assetKeys: assetKeys });
 };
 
 api.updateStart = function(details) {
-    var oldUpdateDelay = updaterAssetDelay,
-        newUpdateDelay = typeof details.delay === 'number' ?
+    const oldUpdateDelay = updaterAssetDelay;
+    const newUpdateDelay = typeof details.delay === 'number' ?
         details.delay :
         updaterAssetDelayDefault;
     updaterAssetDelay = Math.min(oldUpdateDelay, newUpdateDelay);
@@ -1055,6 +1058,11 @@ api.updateStop = function() {
     }
 };
 
+api.isUpdating = function() {
+    return updaterStatus === 'updating' &&
+           updaterAssetDelay <= µBlock.hiddenSettings.manualUpdateAssetFetchPeriod;
+};
+
 /******************************************************************************/
 
 return api;

src/js/background.js

@@ -40,6 +40,7 @@ const µBlock = (function() { // jshint ignore:line
         assetFetchTimeout: 30,
         autoCommentFilterTemplate: '{{date}} {{origin}}',
         autoUpdateAssetFetchPeriod: 120,
+        autoUpdateDelayAfterLaunch: 180,
         autoUpdatePeriod: 7,
         cacheStorageAPI: 'unset',
         cacheStorageCompression: true,

src/js/messaging.js

@@ -862,24 +862,23 @@ const resetUserData = function() {
 
 // 3rd-party filters
 
-var prepListEntries = function(entries) {
-    var µburi = µb.URI;
-    var entry, hn;
-    for ( var k in entries ) {
+const prepListEntries = function(entries) {
+    const µburi = µb.URI;
+    for ( const k in entries ) {
         if ( entries.hasOwnProperty(k) === false ) { continue; }
-        entry = entries[k];
+        const entry = entries[k];
         if ( typeof entry.supportURL === 'string' && entry.supportURL !== '' ) {
             entry.supportName = µburi.hostnameFromURI(entry.supportURL);
         } else if ( typeof entry.homeURL === 'string' && entry.homeURL !== '' ) {
-            hn = µburi.hostnameFromURI(entry.homeURL);
-            entry.supportURL = 'http://' + hn + '/';
+            const hn = µburi.hostnameFromURI(entry.homeURL);
+            entry.supportURL = `http://${hn}/`;
             entry.supportName = µburi.domainFromHostname(hn);
         }
     }
 };
 
-var getLists = function(callback) {
-    var r = {
+const getLists = function(callback) {
+    const r = {
         autoUpdate: µb.userSettings.autoUpdate,
         available: null,
         cache: null,
@@ -887,16 +886,17 @@ var getLists = function(callback) {
         current: µb.availableFilterLists,
         externalLists: µb.userSettings.externalLists,
         ignoreGenericCosmeticFilters: µb.userSettings.ignoreGenericCosmeticFilters,
+        isUpdating: µb.assets.isUpdating(),
         netFilterCount: µb.staticNetFilteringEngine.getFilterCount(),
         parseCosmeticFilters: µb.userSettings.parseAllABPHideFilters,
         userFiltersPath: µb.userFiltersPath
     };
-    var onMetadataReady = function(entries) {
+    const onMetadataReady = function(entries) {
         r.cache = entries;
         prepListEntries(r.cache);
         callback(r);
     };
-    var onLists = function(lists) {
+    const onLists = function(lists) {
         r.available = lists;
         prepListEntries(r.available);
         µb.assets.metadata(onMetadataReady);
@@ -908,7 +908,7 @@ var getLists = function(callback) {
 
 // My rules
 
-var getRules = function() {
+const getRules = function() {
     return {
         permanentRules:
             µb.permanentFirewall.toArray().concat(
@@ -923,7 +923,7 @@ var getRules = function() {
     };
 };
 
-var modifyRuleset = function(details) {
+const modifyRuleset = function(details) {
     let swRuleset, hnRuleset, urlRuleset;
     if ( details.permanent ) {
         swRuleset = µb.permanentSwitches;
@@ -974,7 +974,7 @@ var modifyRuleset = function(details) {
 
 // Shortcuts pane
 
-let getShortcuts = function(callback) {
+const getShortcuts = function(callback) {
     if ( µb.canUseShortcuts === false ) {
         return callback([]);
     }
@@ -995,7 +995,7 @@ let getShortcuts = function(callback) {
     });
 };
 
-let setShortcut = function(details) {
+const setShortcut = function(details) {
     if  ( µb.canUpdateShortcuts === false ) { return; }
     if ( details.shortcut === undefined ) {
         vAPI.commands.reset(details.name);
@@ -1009,7 +1009,7 @@ let setShortcut = function(details) {
 
 /******************************************************************************/
 
-var onMessage = function(request, sender, callback) {
+const onMessage = function(request, sender, callback) {
     // Async
     switch ( request.what ) {
     case 'backupUserData':

src/js/start.js

@@ -67,7 +67,11 @@ var onAllReady = function() {
     // https://github.com/chrisaljoudi/uBlock/issues/184
     //   Check for updates not too far in the future.
     µb.assets.addObserver(µb.assetObserver.bind(µb));
-    µb.scheduleAssetUpdater(µb.userSettings.autoUpdate ? 5 * 60 * 1000 : 0);
+    µb.scheduleAssetUpdater(
+        µb.userSettings.autoUpdate
+            ? µb.hiddenSettings.autoUpdateDelayAfterLaunch * 1000
+            : 0
+    );
 
     // vAPI.cloud is optional.
     if ( µb.cloudStorageSupported ) {