57 lines
1.7 KiB
JavaScript
57 lines
1.7 KiB
JavaScript
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"use strict";
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var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = useStatus;
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var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime/helpers/slicedToArray"));
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var _react = require("react");
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var _util = require("../util");
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function useStatus(_ref) {
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var src = _ref.src,
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isCustomPlaceholder = _ref.isCustomPlaceholder,
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fallback = _ref.fallback;
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var _useState = (0, _react.useState)(isCustomPlaceholder ? 'loading' : 'normal'),
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_useState2 = (0, _slicedToArray2.default)(_useState, 2),
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status = _useState2[0],
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setStatus = _useState2[1];
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var isLoaded = (0, _react.useRef)(false);
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var isError = status === 'error';
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// https://github.com/react-component/image/pull/187
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(0, _react.useEffect)(function () {
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(0, _util.isImageValid)(src).then(function (isValid) {
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if (!isValid) {
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setStatus('error');
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}
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});
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}, [src]);
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(0, _react.useEffect)(function () {
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if (isCustomPlaceholder && !isLoaded.current) {
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setStatus('loading');
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} else if (isError) {
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setStatus('normal');
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}
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}, [src]);
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var onLoad = function onLoad() {
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setStatus('normal');
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};
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var getImgRef = function getImgRef(img) {
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isLoaded.current = false;
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if (status !== 'loading') {
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return;
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}
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if (img !== null && img !== void 0 && img.complete && (img.naturalWidth || img.naturalHeight)) {
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isLoaded.current = true;
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onLoad();
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}
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};
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var srcAndOnload = isError && fallback ? {
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src: fallback
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} : {
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onLoad: onLoad,
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src: src
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};
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return [getImgRef, srcAndOnload, status];
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}
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