1 | "use strict";
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2 |
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3 | var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard");
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4 |
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5 | var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
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6 |
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7 | Object.defineProperty(exports, "__esModule", {
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8 | value: true
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9 | });
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10 | exports.default = ScrollbarSize;
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11 |
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12 | var _extends2 = _interopRequireDefault(require("@babel/runtime/helpers/extends"));
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13 |
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14 | var _objectWithoutProperties2 = _interopRequireDefault(require("@babel/runtime/helpers/objectWithoutProperties"));
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15 |
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16 | var React = _interopRequireWildcard(require("react"));
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17 |
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18 | var _propTypes = _interopRequireDefault(require("prop-types"));
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19 |
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20 | var _debounce = _interopRequireDefault(require("../utils/debounce"));
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21 |
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22 | var styles = {
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23 | width: 99,
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24 | height: 99,
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25 | position: 'absolute',
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26 | top: -9999,
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27 | overflow: 'scroll'
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28 | };
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29 |
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30 |
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31 |
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32 |
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33 |
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34 |
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35 | function ScrollbarSize(props) {
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36 | var onChange = props.onChange,
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37 | other = (0, _objectWithoutProperties2.default)(props, ["onChange"]);
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38 | var scrollbarHeight = React.useRef();
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39 | var nodeRef = React.useRef(null);
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40 |
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41 | var setMeasurements = function setMeasurements() {
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42 | scrollbarHeight.current = nodeRef.current.offsetHeight - nodeRef.current.clientHeight;
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43 | };
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44 |
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45 | React.useEffect(function () {
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46 | var handleResize = (0, _debounce.default)(function () {
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47 | var prevHeight = scrollbarHeight.current;
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48 | setMeasurements();
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49 |
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50 | if (prevHeight !== scrollbarHeight.current) {
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51 | onChange(scrollbarHeight.current);
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52 | }
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53 | });
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54 | window.addEventListener('resize', handleResize);
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55 | return function () {
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56 | handleResize.clear();
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57 | window.removeEventListener('resize', handleResize);
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58 | };
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59 | }, [onChange]);
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60 | React.useEffect(function () {
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61 | setMeasurements();
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62 | onChange(scrollbarHeight.current);
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63 | }, [onChange]);
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64 | return React.createElement("div", (0, _extends2.default)({
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65 | style: styles,
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66 | ref: nodeRef
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67 | }, other));
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68 | }
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69 |
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70 | process.env.NODE_ENV !== "production" ? ScrollbarSize.propTypes = {
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71 | onChange: _propTypes.default.func.isRequired
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72 | } : void 0; |
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