GT2/Ejectable/node_modules/react-native/Libraries/Renderer/shims/ReactNativeViewConfigRegist...

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2021-08-16 00:14:59 +00:00
/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @format
* @flow strict-local
*/
/* eslint-disable react-internal/invariant-args */
'use strict';
import type {
ReactNativeBaseComponentViewConfig,
ViewConfigGetter,
} from './ReactNativeTypes';
const invariant = require('invariant');
// Event configs
const customBubblingEventTypes: {
[eventName: string]: $ReadOnly<{|
phasedRegistrationNames: $ReadOnly<{|
captured: string,
bubbled: string,
|}>,
|}>,
...,
} = {};
const customDirectEventTypes: {
[eventName: string]: $ReadOnly<{|
registrationName: string,
|}>,
...,
} = {};
exports.customBubblingEventTypes = customBubblingEventTypes;
exports.customDirectEventTypes = customDirectEventTypes;
const viewConfigCallbacks = new Map();
const viewConfigs = new Map();
function processEventTypes(
viewConfig: ReactNativeBaseComponentViewConfig<>,
): void {
const {bubblingEventTypes, directEventTypes} = viewConfig;
if (__DEV__) {
if (bubblingEventTypes != null && directEventTypes != null) {
for (const topLevelType in directEventTypes) {
invariant(
bubblingEventTypes[topLevelType] == null,
'Event cannot be both direct and bubbling: %s',
topLevelType,
);
}
}
}
if (bubblingEventTypes != null) {
for (const topLevelType in bubblingEventTypes) {
if (customBubblingEventTypes[topLevelType] == null) {
customBubblingEventTypes[topLevelType] =
bubblingEventTypes[topLevelType];
}
}
}
if (directEventTypes != null) {
for (const topLevelType in directEventTypes) {
if (customDirectEventTypes[topLevelType] == null) {
customDirectEventTypes[topLevelType] = directEventTypes[topLevelType];
}
}
}
}
/**
* Registers a native view/component by name.
* A callback is provided to load the view config from UIManager.
* The callback is deferred until the view is actually rendered.
*/
exports.register = function(name: string, callback: ViewConfigGetter): string {
invariant(
!viewConfigCallbacks.has(name),
'Tried to register two views with the same name %s',
name,
);
invariant(
typeof callback === 'function',
'View config getter callback for component `%s` must be a function (received `%s`)',
name,
callback === null ? 'null' : typeof callback,
);
viewConfigCallbacks.set(name, callback);
return name;
};
/**
* Retrieves a config for the specified view.
* If this is the first time the view has been used,
* This configuration will be lazy-loaded from UIManager.
*/
exports.get = function(name: string): ReactNativeBaseComponentViewConfig<> {
let viewConfig;
if (!viewConfigs.has(name)) {
const callback = viewConfigCallbacks.get(name);
if (typeof callback !== 'function') {
invariant(
false,
'View config getter callback for component `%s` must be a function (received `%s`).%s',
name,
callback === null ? 'null' : typeof callback,
typeof name[0] === 'string' && /[a-z]/.test(name[0])
? ' Make sure to start component names with a capital letter.'
: '',
);
}
viewConfig = callback();
processEventTypes(viewConfig);
viewConfigs.set(name, viewConfig);
// Clear the callback after the config is set so that
// we don't mask any errors during registration.
viewConfigCallbacks.set(name, null);
} else {
viewConfig = viewConfigs.get(name);
}
invariant(viewConfig, 'View config not found for name %s', name);
return viewConfig;
};