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-rw-r--r--addon-sdk/source/lib/sdk/util/rules.js53
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diff --git a/addon-sdk/source/lib/sdk/util/rules.js b/addon-sdk/source/lib/sdk/util/rules.js
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+++ b/addon-sdk/source/lib/sdk/util/rules.js
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+module.metadata = {
+ "stability": "unstable"
+};
+
+const { Class } = require('../core/heritage');
+const { MatchPattern } = require('./match-pattern');
+const { emit } = require('../event/core');
+const { EventTarget } = require('../event/target');
+const { List, addListItem, removeListItem } = require('./list');
+
+// Should deprecate usage of EventEmitter/compose
+const Rules = Class({
+ implements: [
+ EventTarget,
+ List
+ ],
+ add: function(...rules) {
+ return [].concat(rules).forEach(function onAdd(rule) {
+ addListItem(this, rule);
+ emit(this, 'add', rule);
+ }, this);
+ },
+ remove: function(...rules) {
+ return [].concat(rules).forEach(function onRemove(rule) {
+ removeListItem(this, rule);
+ emit(this, 'remove', rule);
+ }, this);
+ },
+ get: function(rule) {
+ let found = false;
+ for (let i in this) if (this[i] === rule) found = true;
+ return found;
+ },
+ // Returns true if uri matches atleast one stored rule
+ matchesAny: function(uri) {
+ return !!filterMatches(this, uri).length;
+ },
+ toString: () => '[object Rules]'
+});
+exports.Rules = Rules;
+
+function filterMatches(instance, uri) {
+ let matches = [];
+ for (let i in instance) {
+ if (new MatchPattern(instance[i]).test(uri)) matches.push(instance[i]);
+ }
+ return matches;
+}