147 lines
3.3 KiB
JavaScript
147 lines
3.3 KiB
JavaScript
/**
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* Copyright (c) Meta Platforms, Inc. and 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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* @flow
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* @format
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* @oncall react_native
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*/
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'use strict';
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import type {PlatformConfig} from '../AnimatedPlatformConfig';
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import AnimatedNode from './AnimatedNode';
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import AnimatedWithChildren from './AnimatedWithChildren';
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import * as React from 'react';
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const MAX_DEPTH = 5;
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function isPlainObject(value: any): boolean {
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return (
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value !== null &&
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typeof value === 'object' &&
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Object.getPrototypeOf(value).isPrototypeOf(Object)
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);
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}
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// Recurse through values, executing fn for any AnimatedNodes
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function visit(value: any, fn: any => void, depth: number = 0): void {
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if (depth >= MAX_DEPTH) {
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return;
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}
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if (value instanceof AnimatedNode) {
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fn(value);
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} else if (Array.isArray(value)) {
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value.forEach(element => {
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visit(element, fn, depth + 1);
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});
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} else if (isPlainObject(value)) {
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Object.values(value).forEach(element => {
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visit(element, fn, depth + 1);
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});
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}
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}
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// Returns a copy of value with a transformation fn applied to any AnimatedNodes
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function mapAnimatedNodes(value: any, fn: any => any, depth: number = 0): any {
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if (depth >= MAX_DEPTH) {
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return value;
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}
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if (value instanceof AnimatedNode) {
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return fn(value);
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} else if (Array.isArray(value)) {
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return value.map(element => mapAnimatedNodes(element, fn, depth + 1));
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} else if (isPlainObject(value)) {
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const result: {[string]: any} = {};
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for (const key in value) {
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result[key] = mapAnimatedNodes(value[key], fn, depth + 1);
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}
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return result;
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} else {
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return value;
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}
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}
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export function hasAnimatedNode(value: any, depth: number = 0): boolean {
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if (depth >= MAX_DEPTH) {
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return false;
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}
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if (value instanceof AnimatedNode) {
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return true;
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} else if (Array.isArray(value)) {
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for (const element of value) {
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if (hasAnimatedNode(element, depth + 1)) {
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return true;
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}
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}
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} else if (isPlainObject(value)) {
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// Don't consider React elements
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if (React.isValidElement(value)) {
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return false;
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}
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for (const key in value) {
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if (hasAnimatedNode(value[key], depth + 1)) {
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return true;
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}
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}
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}
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return false;
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}
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export default class AnimatedObject extends AnimatedWithChildren {
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_value: any;
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constructor(value: any) {
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super();
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this._value = value;
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}
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__getValue(): any {
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return mapAnimatedNodes(this._value, node => {
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return node.__getValue();
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});
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}
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__getAnimatedValue(): any {
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return mapAnimatedNodes(this._value, node => {
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return node.__getAnimatedValue();
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});
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}
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__attach(): void {
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super.__attach();
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visit(this._value, node => {
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node.__addChild(this);
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});
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}
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__detach(): void {
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visit(this._value, node => {
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node.__removeChild(this);
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});
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super.__detach();
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}
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__makeNative(platformConfig: ?PlatformConfig): void {
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visit(this._value, value => {
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value.__makeNative(platformConfig);
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});
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super.__makeNative(platformConfig);
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}
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__getNativeConfig(): any {
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return {
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type: 'object',
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value: mapAnimatedNodes(this._value, node => {
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return {nodeTag: node.__getNativeTag()};
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}),
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};
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}
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}
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