43 lines
1.3 KiB
JavaScript
43 lines
1.3 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 = useOffsets;
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var _objectSpread2 = _interopRequireDefault(require("@babel/runtime/helpers/objectSpread2"));
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var _react = require("react");
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var DEFAULT_SIZE = {
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width: 0,
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height: 0,
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left: 0,
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top: 0
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};
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function useOffsets(tabs, tabSizes, holderScrollWidth) {
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return (0, _react.useMemo)(function () {
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var _tabs$;
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var map = new Map();
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var lastOffset = tabSizes.get((_tabs$ = tabs[0]) === null || _tabs$ === void 0 ? void 0 : _tabs$.key) || DEFAULT_SIZE;
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var rightOffset = lastOffset.left + lastOffset.width;
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for (var i = 0; i < tabs.length; i += 1) {
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var key = tabs[i].key;
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var data = tabSizes.get(key);
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// Reuse last one when not exist yet
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if (!data) {
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var _tabs;
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data = tabSizes.get((_tabs = tabs[i - 1]) === null || _tabs === void 0 ? void 0 : _tabs.key) || DEFAULT_SIZE;
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}
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var entity = map.get(key) || (0, _objectSpread2.default)({}, data);
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// Right
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entity.right = rightOffset - entity.left - entity.width;
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// Update entity
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map.set(key, entity);
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}
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return map;
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}, [tabs.map(function (tab) {
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return tab.key;
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}).join('_'), tabSizes, holderScrollWidth]);
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}
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