@elastic/eui
Version:
Elastic UI Component Library
128 lines (125 loc) • 8.32 kB
JavaScript
function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
function _slicedToArray(r, e) { return _arrayWithHoles(r) || _iterableToArrayLimit(r, e) || _unsupportedIterableToArray(r, e) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(r, a) { if (r) { if ("string" == typeof r) return _arrayLikeToArray(r, a); var t = {}.toString.call(r).slice(8, -1); return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0; } }
function _arrayLikeToArray(r, a) { (null == a || a > r.length) && (a = r.length); for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; return n; }
function _iterableToArrayLimit(r, l) { var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (null != t) { var e, n, i, u, a = [], f = !0, o = !1; try { if (i = (t = t.call(r)).next, 0 === l) { if (Object(t) !== t) return; f = !1; } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); } catch (r) { o = !0, n = r; } finally { try { if (!f && null != t.return && (u = t.return(), Object(u) !== u)) return; } finally { if (o) throw n; } } return a; } }
function _arrayWithHoles(r) { if (Array.isArray(r)) return r; }
function _defineProperties(e, r) { for (var t = 0; t < r.length; t++) { var o = r[t]; o.enumerable = o.enumerable || !1, o.configurable = !0, "value" in o && (o.writable = !0), Object.defineProperty(e, _toPropertyKey(o.key), o); } }
function _createClass(e, r, t) { return r && _defineProperties(e.prototype, r), t && _defineProperties(e, t), Object.defineProperty(e, "prototype", { writable: !1 }), e; }
function _classCallCheck(a, n) { if (!(a instanceof n)) throw new TypeError("Cannot call a class as a function"); }
function _callSuper(t, o, e) { return o = _getPrototypeOf(o), _possibleConstructorReturn(t, _isNativeReflectConstruct() ? Reflect.construct(o, e || [], _getPrototypeOf(t).constructor) : o.apply(t, e)); }
function _possibleConstructorReturn(t, e) { if (e && ("object" == _typeof(e) || "function" == typeof e)) return e; if (void 0 !== e) throw new TypeError("Derived constructors may only return object or undefined"); return _assertThisInitialized(t); }
function _assertThisInitialized(e) { if (void 0 === e) throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); return e; }
function _isNativeReflectConstruct() { try { var t = !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); } catch (t) {} return (_isNativeReflectConstruct = function _isNativeReflectConstruct() { return !!t; })(); }
function _getPrototypeOf(t) { return _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function (t) { return t.__proto__ || Object.getPrototypeOf(t); }, _getPrototypeOf(t); }
function _inherits(t, e) { if ("function" != typeof e && null !== e) throw new TypeError("Super expression must either be null or a function"); t.prototype = Object.create(e && e.prototype, { constructor: { value: t, writable: !0, configurable: !0 } }), Object.defineProperty(t, "prototype", { writable: !1 }), e && _setPrototypeOf(t, e); }
function _setPrototypeOf(t, e) { return _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function (t, e) { return t.__proto__ = e, t; }, _setPrototypeOf(t, e); }
function _defineProperty(e, r, t) { return (r = _toPropertyKey(r)) in e ? Object.defineProperty(e, r, { value: t, enumerable: !0, configurable: !0, writable: !0 }) : e[r] = t, e; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : i + ""; }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
import { useCallback, useEffect, useRef, useState } from 'react';
import { EuiObserver } from '../observer';
export var hasResizeObserver = typeof window !== 'undefined' && typeof window.ResizeObserver !== 'undefined';
export var EuiResizeObserver = /*#__PURE__*/function (_EuiObserver) {
function EuiResizeObserver() {
var _this;
_classCallCheck(this, EuiResizeObserver);
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
_this = _callSuper(this, EuiResizeObserver, [].concat(args));
_defineProperty(_this, "name", 'EuiResizeObserver');
_defineProperty(_this, "state", {
height: 0,
width: 0
});
_defineProperty(_this, "onResize", function (_ref) {
var _ref2 = _slicedToArray(_ref, 1),
entry = _ref2[0];
var _entry$borderBoxSize$ = entry.borderBoxSize[0],
width = _entry$borderBoxSize$.inlineSize,
height = _entry$borderBoxSize$.blockSize;
// Check for actual resize event
if (_this.state.height === height && _this.state.width === width) {
return;
}
_this.props.onResize({
height: height,
width: width
});
_this.setState({
height: height,
width: width
});
});
_defineProperty(_this, "beginObserve", function () {
// The superclass checks that childNode is not null before invoking
// beginObserve()
var childNode = _this.childNode;
_this.observer = makeResizeObserver(childNode, _this.onResize);
});
return _this;
}
_inherits(EuiResizeObserver, _EuiObserver);
return _createClass(EuiResizeObserver);
}(EuiObserver);
var makeResizeObserver = function makeResizeObserver(node, callback) {
var observer;
if (hasResizeObserver) {
observer = new window.ResizeObserver(callback);
observer.observe(node);
}
return observer;
};
export var useResizeObserver = function useResizeObserver(container, dimension) {
var _useState = useState({
width: 0,
height: 0
}),
_useState2 = _slicedToArray(_useState, 2),
size = _useState2[0],
_setSize = _useState2[1];
// _currentDimensions and _setSize are used to only store the
// new state (and trigger a re-render) when the new dimensions actually differ
var _currentDimensions = useRef(size);
var setSize = useCallback(function (dimensions) {
var doesWidthMatter = dimension !== 'height';
var doesHeightMatter = dimension !== 'width';
if (doesWidthMatter && _currentDimensions.current.width !== dimensions.width || doesHeightMatter && _currentDimensions.current.height !== dimensions.height) {
_currentDimensions.current = dimensions;
_setSize(dimensions);
}
}, [dimension]);
useEffect(function () {
if (container != null) {
var observer = makeResizeObserver(container, function (_ref3) {
var _ref4 = _slicedToArray(_ref3, 1),
entry = _ref4[0];
var _entry$borderBoxSize$2 = entry.borderBoxSize[0],
inlineSize = _entry$borderBoxSize$2.inlineSize,
blockSize = _entry$borderBoxSize$2.blockSize;
setSize({
width: inlineSize,
height: blockSize
});
});
return function () {
return observer && observer.disconnect();
};
} else {
setSize({
width: 0,
height: 0
});
}
}, [container, setSize]);
return size;
};