76 строки
2.1 KiB
JavaScript
76 строки
2.1 KiB
JavaScript
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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* @flow strict-local
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*/
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import NativeDevSettings from '../NativeModules/specs/NativeDevSettings';
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import NativeEventEmitter from '../EventEmitter/NativeEventEmitter';
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interface IDevSettings {
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addMenuItem(title: string, handler: () => mixed): void;
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reload(reason?: string): void;
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onFastRefresh(): void;
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}
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class DevSettings extends NativeEventEmitter implements IDevSettings {
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_menuItems: Map<string, () => mixed>;
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constructor() {
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super(NativeDevSettings);
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this._menuItems = new Map();
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}
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addMenuItem(title: string, handler: () => mixed) {
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// Make sure items are not added multiple times. This can
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// happen when hot reloading the module that registers the
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// menu items. The title is used as the id which means we
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// don't support multiple items with the same name.
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const oldHandler = this._menuItems.get(title);
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if (oldHandler != null) {
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this.removeListener('didPressMenuItem', oldHandler);
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} else {
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NativeDevSettings.addMenuItem(title);
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}
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this._menuItems.set(title, handler);
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this.addListener('didPressMenuItem', event => {
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if (event.title === title) {
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handler();
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}
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});
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}
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reload(reason?: string) {
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if (typeof NativeDevSettings.reloadWithReason === 'function') {
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NativeDevSettings.reloadWithReason(reason ?? 'Uncategorized from JS');
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} else {
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NativeDevSettings.reload();
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}
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}
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onFastRefresh() {
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if (typeof NativeDevSettings.onFastRefresh === 'function') {
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NativeDevSettings.onFastRefresh();
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}
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}
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// TODO: Add other dev setting methods exposed by the native module.
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}
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// Avoid including the full `NativeDevSettings` class in prod.
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class NoopDevSettings implements IDevSettings {
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addMenuItem(title: string, handler: () => mixed) {}
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reload(reason?: string) {}
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onFastRefresh() {}
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}
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module.exports = ((__DEV__
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? new DevSettings()
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: new NoopDevSettings()): IDevSettings);
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