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) 2020-2022 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 {EventListenerCollection} from '../core/event-listener-collection.js';
20import {base64ToArrayBuffer} from '../data/array-buffer-util.js';
21
22/**
23 * The content manager which is used when generating HTML display content.
24 */
25export class DisplayContentManager {
26 /**
27 * Creates a new instance of the class.
28 * @param {import('./display.js').Display} display The display instance that owns this object.
29 */
30 constructor(display) {
31 /** @type {import('./display.js').Display} */
32 this._display = display;
33 /** @type {import('core').TokenObject} */
34 this._token = {};
35 /** @type {EventListenerCollection} */
36 this._eventListeners = new EventListenerCollection();
37 /** @type {import('display-content-manager').LoadMediaRequest[]} */
38 this._loadMediaRequests = [];
39 }
40
41 /** @type {import('display-content-manager').LoadMediaRequest[]} */
42 get loadMediaRequests() {
43 return this._loadMediaRequests;
44 }
45
46 /**
47 * Queues loading media file from a given dictionary.
48 * @param {string} path
49 * @param {string} dictionary
50 * @param {OffscreenCanvas} canvas
51 */
52 loadMedia(path, dictionary, canvas) {
53 this._loadMediaRequests.push({path, dictionary, canvas});
54 }
55
56 /**
57 * Unloads all media that has been loaded.
58 */
59 unloadAll() {
60 this._token = {};
61
62 this._eventListeners.removeAllEventListeners();
63
64 this._loadMediaRequests = [];
65 }
66
67 /**
68 * Sets up attributes and events for a link element.
69 * @param {HTMLAnchorElement} element The link element.
70 * @param {string} href The URL.
71 * @param {boolean} internal Whether or not the URL is an internal or external link.
72 */
73 prepareLink(element, href, internal) {
74 element.href = href;
75 if (!internal) {
76 element.target = '_blank';
77 element.rel = 'noreferrer noopener';
78 }
79 this._eventListeners.addEventListener(element, 'click', this._onLinkClick.bind(this));
80 }
81
82 /**
83 * Execute media requests
84 */
85 async executeMediaRequests() {
86 this._display.application.api.drawMedia(this._loadMediaRequests, this._loadMediaRequests.map(({canvas}) => canvas));
87 this._loadMediaRequests = [];
88 }
89
90 /**
91 * @param {string} path
92 * @param {string} dictionary
93 * @param {Window} window
94 */
95 async openMediaInTab(path, dictionary, window) {
96 const data = await this._display.application.api.getMedia([{path, dictionary}]);
97 const buffer = base64ToArrayBuffer(data[0].content);
98 const blob = new Blob([buffer], {type: data[0].mediaType});
99 const blobUrl = URL.createObjectURL(blob);
100 window.open(blobUrl, '_blank')?.focus();
101 }
102
103 /**
104 * @param {MouseEvent} e
105 */
106 _onLinkClick(e) {
107 const {href} = /** @type {HTMLAnchorElement} */ (e.currentTarget);
108 if (typeof href !== 'string') { return; }
109
110 const baseUrl = new URL(location.href);
111 const url = new URL(href, baseUrl);
112 const internal = (url.protocol === baseUrl.protocol && url.host === baseUrl.host);
113 if (!internal) { return; }
114
115 e.preventDefault();
116
117 /** @type {import('display').HistoryParams} */
118 const params = {};
119 for (const [key, value] of url.searchParams.entries()) {
120 params[key] = value;
121 }
122 this._display.setContent({
123 historyMode: 'new',
124 focus: false,
125 params,
126 state: null,
127 content: null,
128 });
129 }
130}