113 lines
3.5 KiB
JavaScript
113 lines
3.5 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* @providesModule NativeModules
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* @flow
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*/
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'use strict';
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const BatchedBridge = require('BatchedBridge');
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const RemoteModules = BatchedBridge.RemoteModules;
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function normalizePrefix(moduleName: string): string {
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return moduleName.replace(/^(RCT|RK)/, '');
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}
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/**
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* Dirty hack to support old (RK) and new (RCT) native module name conventions.
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*/
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Object.keys(RemoteModules).forEach((moduleName) => {
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const strippedName = normalizePrefix(moduleName);
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if (RemoteModules['RCT' + strippedName] && RemoteModules['RK' + strippedName]) {
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throw new Error(
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'Module cannot be registered as both RCT and RK: ' + moduleName
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);
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}
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if (strippedName !== moduleName) {
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RemoteModules[strippedName] = RemoteModules[moduleName];
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delete RemoteModules[moduleName];
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}
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});
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/**
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* Define lazy getters for each module.
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* These will return the module if already loaded, or load it if not.
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*/
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const NativeModules = {};
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Object.keys(RemoteModules).forEach((moduleName) => {
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Object.defineProperty(NativeModules, moduleName, {
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enumerable: true,
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get: () => {
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let module = RemoteModules[moduleName];
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if (module && typeof module.moduleID === 'number' && global.nativeRequireModuleConfig) {
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const json = global.nativeRequireModuleConfig(moduleName);
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const config = json && JSON.parse(json);
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module = config && BatchedBridge.processModuleConfig(config, module.moduleID);
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RemoteModules[moduleName] = module;
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}
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return module;
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},
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});
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});
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/**
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* Copies the ViewManager constants and commands into UIManager. This is
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* only needed for iOS, which puts the constants in the ViewManager
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* namespace instead of UIManager, unlike Android.
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*
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* We'll eventually move this logic to UIManager.js, once all
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* the call sites accessing NativeModules.UIManager directly have
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* been removed #9344445
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*/
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const UIManager = NativeModules.UIManager;
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UIManager && Object.keys(UIManager).forEach(viewName => {
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const viewConfig = UIManager[viewName];
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if (viewConfig.Manager) {
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let constants;
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/* $FlowFixMe - nice try. Flow doesn't like getters */
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Object.defineProperty(viewConfig, 'Constants', {
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enumerable: true,
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get: () => {
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if (constants) {
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return constants;
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}
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constants = {};
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const viewManager = NativeModules[normalizePrefix(viewConfig.Manager)];
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viewManager && Object.keys(viewManager).forEach(key => {
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const value = viewManager[key];
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if (typeof value !== 'function') {
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constants[key] = value;
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}
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});
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return constants;
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},
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});
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let commands;
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/* $FlowFixMe - nice try. Flow doesn't like getters */
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Object.defineProperty(viewConfig, 'Commands', {
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enumerable: true,
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get: () => {
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if (commands) {
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return commands;
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}
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commands = {};
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const viewManager = NativeModules[normalizePrefix(viewConfig.Manager)];
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viewManager && Object.keys(viewManager).forEach((key, index) => {
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const value = viewManager[key];
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if (typeof value === 'function') {
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commands[key] = index;
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}
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});
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return commands;
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},
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});
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}
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});
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module.exports = NativeModules;
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