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1 /* | 1 /* |
2 * This file is part of Adblock Plus <https://adblockplus.org/>, | 2 * This file is part of Adblock Plus <https://adblockplus.org/>, |
3 * Copyright (C) 2006-present eyeo GmbH | 3 * Copyright (C) 2006-present eyeo GmbH |
4 * | 4 * |
5 * Adblock Plus is free software: you can redistribute it and/or modify | 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 | 6 * it under the terms of the GNU General Public License version 3 as |
7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
8 * | 8 * |
9 * Adblock Plus is distributed in the hope that it will be useful, | 9 * Adblock Plus is distributed in the hope that it will be useful, |
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 * GNU General Public License for more details. | 12 * GNU General Public License for more details. |
13 * | 13 * |
14 * You should have received a copy of the GNU General Public License | 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/>. | 15 * along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>. |
16 */ | 16 */ |
17 | 17 |
18 "use strict"; | 18 "use strict"; |
19 | 19 |
20 /** | 20 /** |
21 * @fileOverview Element hiding exceptions implementation. | 21 * @fileOverview Element hiding exceptions implementation. |
22 */ | 22 */ |
23 | 23 |
24 const {EventEmitter} = require("./events"); | 24 const {EventEmitter} = require("./events"); |
25 const {FilterNotifier} = require("./filterNotifier"); | 25 const {filterNotifier} = require("./filterNotifier"); |
26 | 26 |
27 /** | 27 /** |
28 * Lookup table, lists of element hiding exceptions by selector | 28 * Lookup table, lists of element hiding exceptions by selector |
29 * @type {Map.<string,ElemHideException[]>} | 29 * @type {Map.<string,ElemHideException[]>} |
30 */ | 30 */ |
31 let exceptions = new Map(); | 31 let exceptions = new Map(); |
32 | 32 |
33 /** | 33 /** |
34 * Set containing known element exceptions | 34 * Set containing known element exceptions |
35 * @type {Set.<ElemHideException>} | 35 * @type {Set.<ElemHideException>} |
36 */ | 36 */ |
37 let knownExceptions = new Set(); | 37 let knownExceptions = new Set(); |
38 | 38 |
39 /** | 39 /** |
40 * Container for element hiding exceptions | 40 * Container for element hiding exceptions |
41 * @class | 41 * @class |
42 */ | 42 */ |
43 exports.ElemHideExceptions = Object.assign(Object.create(new EventEmitter()), { | 43 exports.ElemHideExceptions = Object.assign(Object.create(new EventEmitter()), { |
44 /** | 44 /** |
45 * Removes all known exceptions | 45 * Removes all known exceptions |
46 */ | 46 */ |
47 clear() | 47 clear() |
48 { | 48 { |
49 exceptions.clear(); | 49 exceptions.clear(); |
50 knownExceptions.clear(); | 50 knownExceptions.clear(); |
51 | 51 |
52 FilterNotifier.emit("elemhideupdate"); | 52 filterNotifier.emit("elemhideupdate"); |
53 }, | 53 }, |
54 | 54 |
55 /** | 55 /** |
56 * Add a new element hiding exception | 56 * Add a new element hiding exception |
57 * @param {ElemHideException} exception | 57 * @param {ElemHideException} exception |
58 */ | 58 */ |
59 add(exception) | 59 add(exception) |
60 { | 60 { |
61 if (knownExceptions.has(exception)) | 61 if (knownExceptions.has(exception)) |
62 return; | 62 return; |
63 | 63 |
64 let {selector} = exception; | 64 let {selector} = exception; |
65 let list = exceptions.get(selector); | 65 let list = exceptions.get(selector); |
66 if (list) | 66 if (list) |
67 list.push(exception); | 67 list.push(exception); |
68 else | 68 else |
69 exceptions.set(selector, [exception]); | 69 exceptions.set(selector, [exception]); |
70 | 70 |
71 knownExceptions.add(exception); | 71 knownExceptions.add(exception); |
72 | 72 |
73 this.emit("added", exception); | 73 this.emit("added", exception); |
74 | 74 |
75 FilterNotifier.emit("elemhideupdate"); | 75 filterNotifier.emit("elemhideupdate"); |
76 }, | 76 }, |
77 | 77 |
78 /** | 78 /** |
79 * Removes an element hiding exception | 79 * Removes an element hiding exception |
80 * @param {ElemHideException} exception | 80 * @param {ElemHideException} exception |
81 */ | 81 */ |
82 remove(exception) | 82 remove(exception) |
83 { | 83 { |
84 if (!knownExceptions.has(exception)) | 84 if (!knownExceptions.has(exception)) |
85 return; | 85 return; |
86 | 86 |
87 let list = exceptions.get(exception.selector); | 87 let list = exceptions.get(exception.selector); |
88 let index = list.indexOf(exception); | 88 let index = list.indexOf(exception); |
89 if (index >= 0) | 89 if (index >= 0) |
90 list.splice(index, 1); | 90 list.splice(index, 1); |
91 | 91 |
92 knownExceptions.delete(exception); | 92 knownExceptions.delete(exception); |
93 | 93 |
94 this.emit("removed", exception); | 94 this.emit("removed", exception); |
95 | 95 |
96 FilterNotifier.emit("elemhideupdate"); | 96 filterNotifier.emit("elemhideupdate"); |
97 }, | 97 }, |
98 | 98 |
99 /** | 99 /** |
100 * Checks whether any exception rules are registered for a selector | 100 * Checks whether any exception rules are registered for a selector |
101 * @param {string} selector | 101 * @param {string} selector |
102 * @returns {boolean} | 102 * @returns {boolean} |
103 */ | 103 */ |
104 hasExceptions(selector) | 104 hasExceptions(selector) |
105 { | 105 { |
106 return exceptions.has(selector); | 106 return exceptions.has(selector); |
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121 | 121 |
122 for (let i = list.length - 1; i >= 0; i--) | 122 for (let i = list.length - 1; i >= 0; i--) |
123 { | 123 { |
124 if (list[i].isActiveOnDomain(docDomain)) | 124 if (list[i].isActiveOnDomain(docDomain)) |
125 return list[i]; | 125 return list[i]; |
126 } | 126 } |
127 | 127 |
128 return null; | 128 return null; |
129 } | 129 } |
130 }); | 130 }); |
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