onedeuxtriseigo.nullpo.dev
Pop-up dictionary browser extension for language learning. Successor to Yomichan. (PERSONAL FORK)
1/*
2 * Copyright (C) 2023-2025 Yomitan Authors
3 * Copyright (C) 2021-2022 Yomichan Authors
4 *
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <https://www.gnu.org/licenses/>.
17 */
18
19import {EventDispatcher} from '../core/event-dispatcher.js';
20
21/**
22 * @augments EventDispatcher<import('search-persistent-state-controller').Events>
23 */
24export class SearchPersistentStateController extends EventDispatcher {
25 constructor() {
26 super();
27 /** @type {import('display').SearchMode} */
28 this._mode = null;
29 }
30
31 /** @type {import('display').SearchMode} */
32 get mode() {
33 return this._mode;
34 }
35
36 set mode(value) {
37 this._setMode(value, true);
38 }
39
40 /** */
41 prepare() {
42 this._updateMode();
43 }
44
45 // Private
46
47 /** */
48 _updateMode() {
49 let mode = null;
50 try {
51 mode = sessionStorage.getItem('mode');
52 } catch (e) {
53 // Browsers can throw a SecurityError when cookie blocking is enabled.
54 }
55 this._setMode(this._normalizeMode(mode), false);
56 }
57
58 /**
59 * @param {import('display').SearchMode} mode
60 * @param {boolean} save
61 */
62 _setMode(mode, save) {
63 if (mode === this._mode) { return; }
64 if (save) {
65 try {
66 if (mode === null) {
67 sessionStorage.removeItem('mode');
68 } else {
69 sessionStorage.setItem('mode', mode);
70 }
71 } catch (e) {
72 // Browsers can throw a SecurityError when cookie blocking is enabled.
73 }
74 }
75 this._mode = mode;
76 document.documentElement.dataset.searchMode = (mode !== null ? mode : '');
77 this.trigger('modeChange', {mode});
78 }
79
80 /**
81 * @param {?string} mode
82 * @returns {import('display').SearchMode}
83 */
84 _normalizeMode(mode) {
85 switch (mode) {
86 case 'popup':
87 case 'action-popup':
88 return mode;
89 default:
90 return null;
91 }
92 }
93}