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import { action, computed, makeObservable, observable, observe } from 'mobx';
import ElectronWebView from 'react-electron-web-view';
import defaultUserAgent from '../helpers/userAgent-helpers';
const debug = require('../preload-safe-debug')('Ferdium:UserAgent');
export default class UserAgent {
// eslint-disable-next-line @typescript-eslint/no-unused-vars
_willNavigateListener = (_event: any): void => {};
// eslint-disable-next-line @typescript-eslint/no-unused-vars
_didNavigateListener = (_event: any): void => {};
@observable.ref webview: ElectronWebView = null;
@observable chromelessUserAgent: boolean = false;
@observable userAgentPref: string | null = null;
@observable overrideUserAgent = (): string => '';
constructor(overrideUserAgent: any = null) {
makeObservable(this);
if (typeof overrideUserAgent === 'function') {
this.overrideUserAgent = overrideUserAgent;
}
observe(this, 'webview', change => {
const { oldValue, newValue } = change;
if (oldValue !== null) {
this._removeWebviewEvents(oldValue);
}
if (newValue !== null) {
this._addWebviewEvents(newValue);
}
});
}
@computed get defaultUserAgent(): string {
const replacedUserAgent = this.overrideUserAgent();
if (replacedUserAgent.length > 0) {
return replacedUserAgent;
}
const globalPref = window['ferdium'].stores.settings.all.app.userAgentPref;
if (typeof globalPref === 'string') {
const trimmed = globalPref.trim();
if (trimmed !== '') {
return trimmed;
}
}
return defaultUserAgent();
}
@computed get serviceUserAgentPref(): string | null {
if (typeof this.userAgentPref === 'string') {
const trimmed = this.userAgentPref.trim();
if (trimmed !== '') {
return trimmed;
}
}
return null;
}
@computed get userAgentWithoutChromeVersion(): string {
const withChrome = this.defaultUserAgent;
return withChrome.replace(/Chrome\/[\d.]+/, 'Chrome');
}
@computed get userAgent(): string {
return (
this.serviceUserAgentPref ||
(this.chromelessUserAgent
? this.userAgentWithoutChromeVersion
: this.defaultUserAgent)
);
}
@action setWebviewReference(webview: ElectronWebView): void {
this.webview = webview;
}
@action _handleNavigate(url: string, forwardingHack: boolean = false): void {
if (url.startsWith('https://accounts.google.com')) {
if (!this.chromelessUserAgent) {
debug('Setting user agent to chromeless for url', url);
this.chromelessUserAgent = true;
this.webview.userAgent = this.userAgent;
if (forwardingHack) {
this.webview.loadURL(url);
}
}
} else if (this.chromelessUserAgent) {
debug('Setting user agent to contain chrome for url', url);
this.chromelessUserAgent = false;
this.webview.userAgent = this.userAgent;
}
}
_addWebviewEvents(webview: ElectronWebView): void {
debug('Adding event handlers');
this._willNavigateListener = event => this._handleNavigate(event.url, true);
webview.addEventListener('will-navigate', this._willNavigateListener);
this._didNavigateListener = event => this._handleNavigate(event.url);
webview.addEventListener('did-navigate', this._didNavigateListener);
}
_removeWebviewEvents(webview: ElectronWebView): void {
debug('Removing event handlers');
webview.removeEventListener('will-navigate', this._willNavigateListener);
webview.removeEventListener('did-navigate', this._didNavigateListener);
}
}
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