57 lines
1.7 KiB
JavaScript
57 lines
1.7 KiB
JavaScript
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'use strict';
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exports.__esModule = true;
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exports.removeResizeListener = exports.addResizeListener = undefined;
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var _resizeObserverPolyfill = require('resize-observer-polyfill');
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var _resizeObserverPolyfill2 = _interopRequireDefault(_resizeObserverPolyfill);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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var isServer = typeof window === 'undefined';
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/* istanbul ignore next */
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var resizeHandler = function resizeHandler(entries) {
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for (var _iterator = entries, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
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var _ref;
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if (_isArray) {
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if (_i >= _iterator.length) break;
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_ref = _iterator[_i++];
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} else {
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_i = _iterator.next();
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if (_i.done) break;
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_ref = _i.value;
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}
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var entry = _ref;
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var listeners = entry.target.__resizeListeners__ || [];
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if (listeners.length) {
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listeners.forEach(function (fn) {
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fn();
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});
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}
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}
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};
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/* istanbul ignore next */
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var addResizeListener = exports.addResizeListener = function addResizeListener(element, fn) {
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if (isServer) return;
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if (!element.__resizeListeners__) {
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element.__resizeListeners__ = [];
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element.__ro__ = new _resizeObserverPolyfill2.default(resizeHandler);
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element.__ro__.observe(element);
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}
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element.__resizeListeners__.push(fn);
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};
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/* istanbul ignore next */
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var removeResizeListener = exports.removeResizeListener = function removeResizeListener(element, fn) {
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if (!element || !element.__resizeListeners__) return;
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element.__resizeListeners__.splice(element.__resizeListeners__.indexOf(fn), 1);
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if (!element.__resizeListeners__.length) {
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element.__ro__.disconnect();
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}
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};
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