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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | 17x 8x 8x 8x 8x 4x 4x 12x 8x 8x 8x 608x 608x 608x 608x 884x 443x 443x 443x 443x 8x 8x 608x | /**
* Copyright (c) Nicolas Gallagher.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow
*/
import type { GenericStyleProp } from '../../types';
import type { ViewProps } from '../../exports/View';
import UIManager from '../../exports/UIManager';
import createDOMProps from '../createDOMProps';
import useStable from '../useStable';
import { useRef } from 'react';
const emptyObject = {};
function setNativeProps(node, nativeProps, classList, pointerEvents, style, previousStyleRef) {
Eif (node != null && nativeProps) {
const domProps = createDOMProps(null, {
pointerEvents,
...nativeProps,
classList: [classList, nativeProps.className],
style: [style, nativeProps.style]
});
const nextDomStyle = domProps.style;
if (previousStyleRef.current != null) {
Iif (domProps.style == null) {
domProps.style = {};
}
for (const styleName in previousStyleRef.current) {
if (domProps.style[styleName] == null) {
domProps.style[styleName] = '';
}
}
}
previousStyleRef.current = nextDomStyle;
UIManager.updateView(node, domProps);
}
}
/**
* Adds non-standard methods to the hode element. This is temporarily until an
* API like `ReactNative.measure(hostRef, callback)` is added to React Native.
*/
export default function usePlatformMethods({
classList,
pointerEvents,
style
}: {
classList?: Array<string | boolean>,
style?: GenericStyleProp<*>,
pointerEvents?: $PropertyType<ViewProps, 'pointerEvents'>
}): (hostNode: any) => void {
const previousStyleRef = useRef(null);
const setNativePropsArgsRef = useRef(null);
setNativePropsArgsRef.current = { classList, pointerEvents, style };
// Avoid creating a new ref on every render. The props only need to be
// available to 'setNativeProps' when it is called.
const ref = useStable(() => (hostNode: any) => {
if (hostNode != null) {
hostNode.measure = (callback) => UIManager.measure(hostNode, callback);
hostNode.measureLayout = (relativeToNode, success, failure) =>
UIManager.measureLayout(hostNode, relativeToNode, failure, success);
hostNode.measureInWindow = (callback) => UIManager.measureInWindow(hostNode, callback);
hostNode.setNativeProps = (nativeProps) => {
const { classList, style, pointerEvents } = setNativePropsArgsRef.current || emptyObject;
setNativeProps(hostNode, nativeProps, classList, pointerEvents, style, previousStyleRef);
};
}
});
return ref;
}
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