Side by Side Diff: lib/filterNotifier.js
Issue 29335650:
Issue 2595 - Use the core code from adblockpluscore (Closed)
Patch Set:
Created Feb. 4, 2016, 6:35 p.m.
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| 1 /* | |
| 2 * This file is part of Adblock Plus <https://adblockplus.org/>, | |
| 3 * Copyright (C) 2006-2016 Eyeo GmbH | |
| 4 * | |
| 5 * Adblock Plus is free software: you can redistribute it and/or modify | |
| 6 * it under the terms of the GNU General Public License version 3 as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * Adblock Plus is distributed in the hope that it will be useful, | |
| 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 * GNU General Public License for more details. | |
| 13 * | |
| 14 * You should have received a copy of the GNU General Public License | |
| 15 * along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>. | |
| 16 */ | |
| 17 | |
| 18 /** | |
| 19 * @fileOverview This component manages listeners and calls them to distributes | |
| 20 * messages about filter changes. | |
| 21 */ | |
| 22 | |
| 23 /** | |
| 24 * List of registered listeners | |
| 25 * @type function[] | |
| 26 */ | |
| 27 let listeners = []; | |
| 28 | |
| 29 /** | |
| 30 * This class allows registering and triggering listeners for filter events. | |
| 31 * @class | |
| 32 */ | |
| 33 let FilterNotifier = exports.FilterNotifier = | |
| 34 { | |
| 35 /** | |
| 36 * Adds a listener | |
| 37 */ | |
| 38 addListener: function(/**function(action, item, newValue, oldValue)*/ listener ) | |
| 39 { | |
| 40 if (listeners.indexOf(listener) >= 0) | |
| 41 return; | |
| 42 | |
| 43 listeners.push(listener); | |
| 44 }, | |
| 45 | |
| 46 /** | |
| 47 * Removes a listener that was previosly added via addListener | |
| 48 */ | |
| 49 removeListener: function(/**function(action, item, newValue, oldValue)*/ liste ner) | |
| 50 { | |
| 51 let index = listeners.indexOf(listener); | |
| 52 if (index >= 0) | |
| 53 listeners.splice(index, 1); | |
| 54 }, | |
| 55 | |
| 56 /** | |
| 57 * Notifies listeners about an event | |
| 58 * @param {String} action event code ("load", "save", "elemhideupdate", | |
| 59 * "subscription.added", "subscription.removed", | |
| 60 * "subscription.disabled", "subscription.title", | |
| 61 * "subscription.lastDownload", "subscription.downloadStatus", | |
| 62 * "subscription.homepage", "subscription.updated", | |
| 63 * "filter.added", "filter.removed", "filter.moved", | |
| 64 * "filter.disabled", "filter.hitCount", "filter.lastHit") | |
| 65 * @param {Subscription|Filter} item item that the change applies to | |
| 66 */ | |
| 67 triggerListeners: function(action, item, param1, param2, param3) | |
| 68 { | |
| 69 let list = listeners.slice(); | |
| 70 for (let listener of list) | |
| 71 listener(action, item, param1, param2, param3); | |
| 72 } | |
| 73 }; | |
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