this fixes #104

3p-filters.html

@@ -36,11 +36,17 @@ ul > li > ul > li {
 .dim {
     color: #888;
     }
-.userUbiquitousHosts {
-    font-size: smaller;
-    width: 36em;
-    height: 16em;
-    white-space: nowrap;
+button.purge {
+    margin: 0;
+    border: 1px solid #ccc;
+    padding: 1px 2px;
+    color: #444;
+    background-color: #eee;
+    font-size: 11px;
+    opacity: 0.6;
+    }
+button.purge:hover {
+    opacity: 1;
     }
 #externalLists {
     font-size: smaller;

_locales/de/messages.json

@@ -143,6 +143,10 @@
     "message":"Anwenden",
     "description":"English: Apply"
   },
+  "3pExternalListPurge":{
+    "message":"purge cache",
+    "description":"English: purge cache"
+  },
   "1pFormatHint":{
     "message":"Eine Regel pro Zeile. Eine Regel kann ein einfacher Host-Name sein oder ein Adblock Plus-kompatibler Filter. Zeilen mit vorangestelltem ‘!’ werden ignoriert.",
     "description":"English: One filter per line. A filter can be a plain hostname, or an Adblock Plus-compatible filter. Lines prefixed with ‘!’ will be ignored."

_locales/en/messages.json

@@ -143,6 +143,10 @@
     "message":"Apply",
     "description":"English: Apply"
   },
+  "3pExternalListPurge":{
+    "message":"purge cache",
+    "description":"English: purge cache"
+  },
   "1pFormatHint":{
     "message":"One filter per line. A filter can be a plain hostname, or an Adblock Plus-compatible filter. Lines prefixed with ‘!’ will be ignored.",
     "description":"English: One filter per line. A filter can be a plain hostname, or an Adblock Plus-compatible filter. Lines prefixed with ‘!’ will be ignored."

_locales/fr/messages.json

@@ -143,6 +143,10 @@
     "message":"Appliquer",
     "description":"English: Apply"
   },
+  "3pExternalListPurge":{
+    "message":"purge cache",
+    "description":"English: purge cache"
+  },
   "1pFormatHint":{
     "message":"Une règle par ligne. Une règle peut être un simple nom d'hôte, ou encore un filtre respectant la syntaxe des filtres Adblock Plus. Les lignes débutant par ‘!’ seront ignorées.",
     "description":"English: One filter per line. A filter can be a plain hostname, or an Adblock Plus-compatible filter. Lines prefixed with ‘!’ will be ignored."

js/3p-filters.js

@@ -30,6 +30,7 @@
 var userListName = chrome.i18n.getMessage('1pPageName');
 var listDetails = {};
 var externalLists = '';
+var cacheWasPurged = false;
 
 /******************************************************************************/
 
@@ -107,6 +108,7 @@ var renderBlacklists = function() {
     };
 
     var listStatsTemplate = chrome.i18n.getMessage('3pListsOfBlockedHostsPerListStats');
+    var purgeButtontext = chrome.i18n.getMessage('3pExternalListPurge');
 
     var htmlFromBranch = function(groupKey, listKeys, lists) {
         var html = [
@@ -143,6 +145,15 @@ var renderBlacklists = function() {
                 .replace('{{used}}', !list.off && !isNaN(+list.entryUsedCount) ? renderNumber(list.entryUsedCount) : '0')
                 .replace('{{total}}', !isNaN(+list.entryCount) ? renderNumber(list.entryCount) : '?');
             html.push(listEntry);
+            // https://github.com/gorhill/uBlock/issues/104
+            if ( /^https?:\/\/.+/.test(listKey) && listDetails.cache[listKey] ) {
+                html.push(
+                    ' ',
+                    '<button type="button" class="purge">',
+                    purgeButtontext,
+                    '</button>'
+                );
+            }
         }
         html.push('</ul>');
         return html.join('');
@@ -217,6 +228,9 @@ var needToReload = function() {
     if ( listDetails.cosmetic !== getµb().userSettings.parseAllABPHideFilters ) {
         return true;
     }
+    if ( cacheWasPurged ) {
+        return true;
+    }
     var availableLists = listDetails.available;
     var currentLists = listDetails.current;
     var location, availableOff, currentOff;
@@ -279,6 +293,20 @@ var onListLinkClicked = function(ev) {
 
 /******************************************************************************/
 
+var onPurgeClicked = function(ev) {
+    var button = uDom(this);
+    var href = button.parent().find('a').first().attr('href');
+    if ( !href ) {
+        return;
+    }
+    messaging.tell({ what: 'purgeCache', path: href });
+    button.remove();
+    cacheWasPurged = true;
+    selectedBlacklistsChanged();
+};
+
+/******************************************************************************/
+
 var blacklistsApplyHandler = function() {
     if ( !needToReload() ) {
         return;
@@ -308,6 +336,7 @@ var blacklistsApplyHandler = function() {
         what: 'reloadAllFilters',
         switches: switches
     });
+    cacheWasPurged = false;
     uDom('#blacklistsApply').prop('disabled', true);
 };
 
@@ -358,6 +387,7 @@ uDom.onLoad(function() {
     uDom('#blacklistsApply').on('click', blacklistsApplyHandler);
     uDom('#lists').on('change', '.listDetails > input', onListCheckboxChanged);
     uDom('#lists').on('click', '.listDetails > a:nth-of-type(1)', onListLinkClicked);
+    uDom('#lists').on('click', 'button.purge', onPurgeClicked);
     uDom('#externalLists').on('input', externalListsChangeHandler);
     uDom('#externalListsApply').on('click', externalListsApplyHandler);
 

js/assets.js

@@ -95,6 +95,7 @@ var cachedAssetsManager = (function() {
         };
         chrome.storage.local.get('cached_asset_entries', onLoaded);
     };
+    exports.entries = getEntries;
 
     exports.load = function(path, cbSuccess, cbError) {
         cbSuccess = cbSuccess || nullFunc;
@@ -625,6 +626,12 @@ var updateFromRemote = function(details, callback) {
 
 /******************************************************************************/
 
+var cacheEntries = function(callback) {
+    return cachedAssetsManager.entries(callback);
+};
+
+/******************************************************************************/
+
 // Flush cached assets if cache content is from an older version: the extension
 // always ships with the most up-to-date assets.
 
@@ -640,7 +647,8 @@ return {
     'getRepo': readRepoFile,
     'purge': purgeCache,
     'put': writeLocalFile,
-    'update': updateFromRemote
+    'update': updateFromRemote,
+    'entries': cacheEntries
 };
 
 /******************************************************************************/

js/messaging-handlers.js

@@ -235,14 +235,26 @@ var onMessage = function(request, sender, callback) {
 
 var getLists = function(callback) {
     var µb = µBlock;
-    var onReceived = function(lists) {
-        callback({
-            available: lists,
-            current: µb.remoteBlacklists,
-            cosmetic: µb.userSettings.parseAllABPHideFilters
-        });
+    var r = {
+        available: null,
+        current: µb.remoteBlacklists,
+        cosmetic: µb.userSettings.parseAllABPHideFilters,
+        cache: null
     };
-    µb.getAvailableLists(onReceived);
+    var onEntries = function(entries) {
+        r.cache = entries;
+        if ( r.available ) {
+            callback(r);
+        }
+    };
+    var onLists = function(lists) {
+        r.available = lists;
+        if ( r.cache ) {
+            callback(r);
+        }
+    };
+    µb.getAvailableLists(onLists);
+    µb.assets.entries(onEntries);
 };
 
 /******************************************************************************/
@@ -269,6 +281,10 @@ var onMessage = function(request, sender, callback) {
     var response;
 
     switch ( request.what ) {
+        case 'purgeCache':
+            µb.assets.purge(request.path);
+            break;
+
         default:
             return µb.messaging.defaultHandler(request, sender, callback);
     }