46 lines
1.1 KiB
TypeScript
46 lines
1.1 KiB
TypeScript
// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import type { BrowserWindow } from 'electron';
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import { ipcMain as ipc, nativeTheme } from 'electron';
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import type { NativeThemeState } from '../types/NativeThemeNotifier.d';
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function getState(): NativeThemeState {
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return {
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shouldUseDarkColors: nativeTheme.shouldUseDarkColors,
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};
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}
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export class NativeThemeNotifier {
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readonly #listeners = new Set<BrowserWindow>();
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public initialize(): void {
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nativeTheme.on('updated', () => {
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this.#notifyListeners();
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});
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ipc.on('native-theme:init', event => {
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// eslint-disable-next-line no-param-reassign
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event.returnValue = getState();
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});
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}
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public addWindow(window: BrowserWindow): void {
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if (this.#listeners.has(window)) {
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return;
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}
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this.#listeners.add(window);
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window.once('closed', () => {
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this.#listeners.delete(window);
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});
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}
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#notifyListeners(): void {
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for (const window of this.#listeners) {
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window.webContents.send('native-theme:changed', getState());
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}
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}
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}
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