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AnimatedProps.js
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AnimatedProps.js
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/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow
* @format
*/
'use strict';
import type {PlatformConfig} from '../AnimatedPlatformConfig';
import {findNodeHandle} from '../../ReactNative/RendererProxy';
import {AnimatedEvent} from '../AnimatedEvent';
import NativeAnimatedHelper from '../NativeAnimatedHelper';
import AnimatedNode from './AnimatedNode';
import AnimatedStyle from './AnimatedStyle';
import invariant from 'invariant';
export default class AnimatedProps extends AnimatedNode {
_props: Object;
_animatedView: any;
_callback: () => void;
constructor(props: Object, callback: () => void) {
super();
if (props.style) {
props = {
...props,
style: new AnimatedStyle(props.style),
};
}
this._props = props;
this._callback = callback;
}
__getValue(initialProps: ?Object): Object {
const props: {[string]: any | ((...args: any) => void)} = {};
for (const key in this._props) {
const value = this._props[key];
if (value instanceof AnimatedNode) {
// During initial render we want to use the initial value of both natively and non-natively
// driven nodes. On subsequent renders, we cannot use the value of natively driven nodes
// as they may not be up to date, so we use the initial value to ensure that values of
// native animated nodes do not impact rerenders.
if (value instanceof AnimatedStyle) {
props[key] = value.__getValue(initialProps?.style);
} else if (!initialProps || !value.__isNative) {
props[key] = value.__getValue();
} else if (initialProps.hasOwnProperty(key)) {
props[key] = initialProps[key];
}
} else if (value instanceof AnimatedEvent) {
props[key] = value.__getHandler();
} else {
props[key] = value;
}
}
return props;
}
__getAnimatedValue(): Object {
const props: {[string]: any} = {};
for (const key in this._props) {
const value = this._props[key];
if (value instanceof AnimatedNode) {
props[key] = value.__getAnimatedValue();
}
}
return props;
}
__attach(): void {
for (const key in this._props) {
const value = this._props[key];
if (value instanceof AnimatedNode) {
value.__addChild(this);
}
}
}
__detach(): void {
if (this.__isNative && this._animatedView) {
this.__disconnectAnimatedView();
}
for (const key in this._props) {
const value = this._props[key];
if (value instanceof AnimatedNode) {
value.__removeChild(this);
}
}
super.__detach();
}
update(): void {
this._callback();
}
__makeNative(platformConfig: ?PlatformConfig): void {
if (!this.__isNative) {
this.__isNative = true;
for (const key in this._props) {
const value = this._props[key];
if (value instanceof AnimatedNode) {
value.__makeNative(platformConfig);
}
}
// Since this does not call the super.__makeNative, we need to store the
// supplied platformConfig here, before calling __connectAnimatedView
// where it will be needed to traverse the graph of attached values.
super.__setPlatformConfig(platformConfig);
if (this._animatedView) {
this.__connectAnimatedView();
}
}
}
setNativeView(animatedView: any): void {
if (this._animatedView === animatedView) {
return;
}
this._animatedView = animatedView;
if (this.__isNative) {
this.__connectAnimatedView();
}
}
__connectAnimatedView(): void {
invariant(this.__isNative, 'Expected node to be marked as "native"');
const nativeViewTag: ?number = findNodeHandle(this._animatedView);
invariant(
nativeViewTag != null,
'Unable to locate attached view in the native tree',
);
NativeAnimatedHelper.API.connectAnimatedNodeToView(
this.__getNativeTag(),
nativeViewTag,
);
}
__disconnectAnimatedView(): void {
invariant(this.__isNative, 'Expected node to be marked as "native"');
const nativeViewTag: ?number = findNodeHandle(this._animatedView);
invariant(
nativeViewTag != null,
'Unable to locate attached view in the native tree',
);
NativeAnimatedHelper.API.disconnectAnimatedNodeFromView(
this.__getNativeTag(),
nativeViewTag,
);
}
__restoreDefaultValues(): void {
// When using the native driver, view properties need to be restored to
// their default values manually since react no longer tracks them. This
// is needed to handle cases where a prop driven by native animated is removed
// after having been changed natively by an animation.
if (this.__isNative) {
NativeAnimatedHelper.API.restoreDefaultValues(this.__getNativeTag());
}
}
__getNativeConfig(): Object {
const propsConfig: {[string]: number} = {};
for (const propKey in this._props) {
const value = this._props[propKey];
if (value instanceof AnimatedNode) {
value.__makeNative(this.__getPlatformConfig());
propsConfig[propKey] = value.__getNativeTag();
}
}
return {
type: 'props',
props: propsConfig,
};
}
}