react-native-macos/jest/mockScrollView.js

36 строки
932 B
JavaScript
Исходник Обычный вид История

Make ScrollView use ForwardRef Summary: Have ScrollView use forwardRef so that the host component methods like `measure` and `measureLayout` are available without having to call `getNativeScrollRef`. Instead, you can use `<ScrollView ref={myRef} />` and directly call all methods of ScrollView and host components on `myRef`. Previous usage: ``` const myRef = React.createRef<React.ElementRef<typeof ScrollView>>(); <ScrollView ref={myRef} /> const innerViewRef = myRef.current.getNativeScrollRef(); innerViewRef.measure(); ``` New usage: ``` const myRef = React.createRef<React.ElementRef<typeof View>>(); <ScrollView ref={myRef} /> // now, myRef.current can be used directly as the ref myRef.current.measure(); myRef.current.measureLayout(); // Additionally, myRef still has access to ScrollView methods myRef.current.scrollTo(...); ``` Changes: * Added deprecation warnings to ScrollView methods `getNativeScrollRef`, `getScrollableNode`, and `getScrollResponder` * Added the forwardRef call to create `ForwardedScrollView` - this takes in `ref` and passes it into the class ScrollView as `scrollViewRef`. * Forwarded the ref to the native scroll view using `setAndForwardRef`. * Added statics onto `ForwardedScrollView` so that `ScrollView.Context` can still be accessed. * Added type `ScrollViewImperativeMethods`, which lists the public methods of ScrollView. * Converted all public methods of ScrollView to arrow functions. This is because they need to be bound to the forwarded ref. * Bound all public methods of ScrollView to the forwarded ref in the `setAndForwardRef` call. * Flow typed the final output (ForwardedScrollView) as an abstract component that takes in the props of the `ScrollView` class, and has all methods of both the inner host component (`measure`, `measureLayout`, etc) and the public methods (`scrollTo`, etc). Changes to mockScrollView: * Changed mockScrollView to be able to mock the function component instead of a class component * Updated necessary tests Changelog: [General] [Changed] - Make ScrollView use forwardRef Reviewed By: TheSavior Differential Revision: D19304480 fbshipit-source-id: 6c359897526d9d5ac6bc6ab6d5f9d82bfc0d8af4
2020-03-27 02:47:39 +03:00
/**
* 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-env jest */
'use strict';
const React = require('react');
const View = require('../Libraries/Components/View/View');
const requireNativeComponent = require('../Libraries/ReactNative/requireNativeComponent');
const RCTScrollView: $FlowFixMe = requireNativeComponent('RCTScrollView');
function mockScrollView(BaseComponent: $FlowFixMe) {
class ScrollViewMock extends BaseComponent {
render(): React.Element<typeof RCTScrollView> {
return (
<RCTScrollView {...this.props}>
{this.props.refreshControl}
<View>{this.props.children}</View>
</RCTScrollView>
);
}
}
return ScrollViewMock;
}
module.exports = (mockScrollView: $FlowFixMe);