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Move initialization of offscreen proxy elements #668

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Move initialization of offscreen proxy elements #668

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46 changes: 10 additions & 36 deletions ext/js/background/backend.js
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,6 @@
import {AccessibilityController} from '../accessibility/accessibility-controller.js';
import {AnkiConnect} from '../comm/anki-connect.js';
import {ClipboardMonitor} from '../comm/clipboard-monitor.js';
import {ClipboardReader} from '../comm/clipboard-reader.js';
import {Mecab} from '../comm/mecab.js';
import {createApiMap, invokeApiMapHandler} from '../core/api-map.js';
import {ExtensionError} from '../core/extension-error.js';
Expand All @@ -30,14 +29,11 @@ import {isNoteDataValid} from '../data/anki-util.js';
import {OptionsUtil} from '../data/options-util.js';
import {getAllPermissions, hasPermissions, hasRequiredPermissionsForOptions} from '../data/permissions-util.js';
import {arrayBufferToBase64} from '../data/sandbox/array-buffer-util.js';
import {DictionaryDatabase} from '../dictionary/dictionary-database.js';
import {Environment} from '../extension/environment.js';
import {ObjectPropertyAccessor} from '../general/object-property-accessor.js';
import {distributeFuriganaInflected, isCodePointJapanese, isStringPartiallyJapanese, convertKatakanaToHiragana as jpConvertKatakanaToHiragana} from '../language/ja/japanese.js';
import {Translator} from '../language/translator.js';
import {AudioDownloader} from '../media/audio-downloader.js';
import {getFileExtensionFromAudioMediaType, getFileExtensionFromImageMediaType} from '../media/media-util.js';
import {ClipboardReaderProxy, DictionaryDatabaseProxy, OffscreenProxy, TranslatorProxy} from './offscreen-proxy.js';
import {createSchema, normalizeContext} from './profile-conditions-util.js';
import {RequestBuilder} from './request-builder.js';
import {injectStylesheet} from './script-manager.js';
Expand All @@ -49,8 +45,11 @@ import {injectStylesheet} from './script-manager.js';
export class Backend {
/**
* @param {import('../extension/web-extension.js').WebExtension} webExtension
* @param {import('../dictionary/dictionary-database.js').DictionaryDatabase|import('./offscreen-proxy.js').DictionaryDatabaseProxy} dictionaryDatabase
* @param {import('../language/translator.js').Translator|import('./offscreen-proxy.js').TranslatorProxy} translator
* @param {import('../comm/clipboard-reader.js').ClipboardReader|import('./offscreen-proxy.js').ClipboardReaderProxy} clipboardReader
*/
constructor(webExtension) {
constructor(webExtension, dictionaryDatabase, translator, clipboardReader) {
/** @type {import('../extension/web-extension.js').WebExtension} */
this._webExtension = webExtension;
/** @type {Environment} */
Expand All @@ -59,34 +58,12 @@ export class Backend {
this._anki = new AnkiConnect();
/** @type {Mecab} */
this._mecab = new Mecab();

if (!chrome.offscreen) {
/** @type {?OffscreenProxy} */
this._offscreen = null;
/** @type {DictionaryDatabase|DictionaryDatabaseProxy} */
this._dictionaryDatabase = new DictionaryDatabase();
/** @type {Translator|TranslatorProxy} */
this._translator = new Translator({
database: this._dictionaryDatabase
});
/** @type {ClipboardReader|ClipboardReaderProxy} */
this._clipboardReader = new ClipboardReader({
// eslint-disable-next-line no-undef
document: (typeof document === 'object' && document !== null ? document : null),
pasteTargetSelector: '#clipboard-paste-target',
richContentPasteTargetSelector: '#clipboard-rich-content-paste-target'
});
} else {
/** @type {?OffscreenProxy} */
this._offscreen = new OffscreenProxy(webExtension);
/** @type {DictionaryDatabase|DictionaryDatabaseProxy} */
this._dictionaryDatabase = new DictionaryDatabaseProxy(this._offscreen);
/** @type {Translator|TranslatorProxy} */
this._translator = new TranslatorProxy(this._offscreen);
/** @type {ClipboardReader|ClipboardReaderProxy} */
this._clipboardReader = new ClipboardReaderProxy(this._offscreen);
}

/** @type {import('../dictionary/dictionary-database.js').DictionaryDatabase|import('./offscreen-proxy.js').DictionaryDatabaseProxy} */
this._dictionaryDatabase = dictionaryDatabase;
/** @type {import('../language/translator.js').Translator|import('./offscreen-proxy.js').TranslatorProxy} */
this._translator = translator;
/** @type {import('../comm/clipboard-reader.js').ClipboardReader|import('./offscreen-proxy.js').ClipboardReaderProxy} */
this._clipboardReader = clipboardReader;
/** @type {ClipboardMonitor} */
this._clipboardMonitor = new ClipboardMonitor({
clipboardReader: this._clipboardReader
Expand Down Expand Up @@ -267,9 +244,6 @@ export class Backend {

await this._requestBuilder.prepare();
await this._environment.prepare();
if (this._offscreen !== null) {
await this._offscreen.prepare();
}
this._clipboardReader.browser = this._environment.getInfo().browser;

try {
Expand Down
29 changes: 28 additions & 1 deletion ext/js/background/background-main.js
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Original file line number Diff line number Diff line change
Expand Up @@ -16,14 +16,41 @@
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/

import {ClipboardReader} from '../comm/clipboard-reader.js';
import {DictionaryDatabase} from '../dictionary/dictionary-database.js';
import {WebExtension} from '../extension/web-extension.js';
import {Translator} from '../language/translator.js';
import {Backend} from './backend.js';
import {ClipboardReaderProxy, DictionaryDatabaseProxy, OffscreenProxy, TranslatorProxy} from './offscreen-proxy.js';

/** Entry point. */
async function main() {
const webExtension = new WebExtension();

const backend = new Backend(webExtension);
/** @type {?import('../dictionary/dictionary-database.js').DictionaryDatabase|import('./offscreen-proxy.js').DictionaryDatabaseProxy} */
let dictionaryDatabase = null;
/** @type {?import('../language/translator.js').Translator|import('./offscreen-proxy.js').TranslatorProxy} */
let translator = null;
/** @type {?import('../comm/clipboard-reader.js').ClipboardReader|import('./offscreen-proxy.js').ClipboardReaderProxy} */
let clipboardReader = null;
if (webExtension.isOffscreenSupported()) {
const offscreen = new OffscreenProxy(webExtension);
offscreen.prepare();
dictionaryDatabase = new DictionaryDatabaseProxy(offscreen);
translator = new TranslatorProxy(offscreen);
clipboardReader = new ClipboardReaderProxy(offscreen);
} else {
dictionaryDatabase = new DictionaryDatabase();
translator = new Translator({database: dictionaryDatabase});
clipboardReader = new ClipboardReader({
// eslint-disable-next-line no-undef
document: (typeof document === 'object' && document !== null ? document : null),
pasteTargetSelector: '#clipboard-paste-target',
richContentPasteTargetSelector: '#clipboard-rich-content-paste-target'
});
}

const backend = new Backend(webExtension, dictionaryDatabase, translator, clipboardReader);
await backend.prepare();
}

Expand Down
8 changes: 8 additions & 0 deletions ext/js/extension/web-extension.js
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Original file line number Diff line number Diff line change
Expand Up @@ -105,4 +105,12 @@ export class WebExtension extends EventDispatcher {
this._unloaded = true;
this.trigger('unloaded', {});
}

/**
* @returns {boolean}
*/
isOffscreenSupported() {
const {offscreen} = chrome;
return typeof offscreen === 'object' && offscreen !== null;
}
}
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