@elastic/eui
Version:
Elastic UI Component Library
145 lines (143 loc) • 12.7 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.useResizeObserver = exports.hasResizeObserver = exports.EuiResizeObserver = void 0;
var _react = require("react");
var _observer = require("../observer");
function _typeof(obj) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }, _typeof(obj); }
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _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(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
function _iterableToArrayLimit(arr, i) { var _i = null == arr ? null : "undefined" != typeof Symbol && arr[Symbol.iterator] || arr["@@iterator"]; if (null != _i) { var _s, _e, _x, _r, _arr = [], _n = !0, _d = !1; try { if (_x = (_i = _i.call(arr)).next, 0 === i) { if (Object(_i) !== _i) return; _n = !1; } else for (; !(_n = (_s = _x.call(_i)).done) && (_arr.push(_s.value), _arr.length !== i); _n = !0); } catch (err) { _d = !0, _e = err; } finally { try { if (!_n && null != _i.return && (_r = _i.return(), Object(_r) !== _r)) return; } finally { if (_d) throw _e; } } return _arr; } }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, _toPropertyKey(descriptor.key), descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); Object.defineProperty(subClass, "prototype", { writable: false }); if (superClass) _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } else if (call !== void 0) { throw new TypeError("Derived constructors may only return object or undefined"); } return _assertThisInitialized(self); }
function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _toPropertyKey(arg) { var key = _toPrimitive(arg, "string"); return _typeof(key) === "symbol" ? key : String(key); }
function _toPrimitive(input, hint) { if (_typeof(input) !== "object" || input === null) return input; var prim = input[Symbol.toPrimitive]; if (prim !== undefined) { var res = prim.call(input, hint || "default"); if (_typeof(res) !== "object") return res; throw new TypeError("@@toPrimitive must return a primitive value."); } return (hint === "string" ? String : Number)(input); } /*
* 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.
*/
var hasResizeObserver = typeof window !== 'undefined' && typeof window.ResizeObserver !== 'undefined';
exports.hasResizeObserver = hasResizeObserver;
var EuiResizeObserver = /*#__PURE__*/function (_EuiObserver) {
_inherits(EuiResizeObserver, _EuiObserver);
var _super = _createSuper(EuiResizeObserver);
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 = _super.call.apply(_super, [this].concat(args));
_defineProperty(_assertThisInitialized(_this), "name", 'EuiResizeObserver');
_defineProperty(_assertThisInitialized(_this), "state", {
height: 0,
width: 0
});
_defineProperty(_assertThisInitialized(_this), "onResize", function () {
// `entry.contentRect` provides incomplete `height` and `width` data.
// Use `getBoundingClientRect` to account for padding and border.
// https://developer.mozilla.org/en-US/docs/Web/API/DOMRectReadOnly
if (!_this.childNode) return;
var _this$childNode$getBo = _this.childNode.getBoundingClientRect(),
height = _this$childNode$getBo.height,
width = _this$childNode$getBo.width;
// 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(_assertThisInitialized(_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;
}
return _createClass(EuiResizeObserver);
}(_observer.EuiObserver);
exports.EuiResizeObserver = EuiResizeObserver;
var makeResizeObserver = function makeResizeObserver(node, callback) {
var observer;
if (hasResizeObserver) {
observer = new window.ResizeObserver(callback);
observer.observe(node);
}
return observer;
};
var useResizeObserver = function useResizeObserver(container, dimension) {
var _useState = (0, _react.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 = (0, _react.useRef)(size);
var setSize = (0, _react.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]);
(0, _react.useEffect)(function () {
if (container != null) {
// ResizeObserver's first call to the observation callback is scheduled in the future
// so find the container's initial dimensions now
var boundingRect = container.getBoundingClientRect();
setSize({
width: boundingRect.width,
height: boundingRect.height
});
var observer = makeResizeObserver(container, function () {
// `entry.contentRect` provides incomplete `height` and `width` data.
// Use `getBoundingClientRect` to account for padding and border.
// https://developer.mozilla.org/en-US/docs/Web/API/DOMRectReadOnly
var _container$getBoundin = container.getBoundingClientRect(),
height = _container$getBoundin.height,
width = _container$getBoundin.width;
setSize({
width: width,
height: height
});
});
return function () {
return observer && observer.disconnect();
};
} else {
setSize({
width: 0,
height: 0
});
}
}, [container, setSize]);
return size;
};
exports.useResizeObserver = useResizeObserver;