| 1 | /*
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| 2 | * Copyright 2018 Palantir Technologies, Inc. All rights reserved.
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 | import { __decorate, __extends } from "tslib";
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| 17 | import * as React from "react";
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| 18 | import { findDOMNode } from "react-dom";
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| 19 | import { polyfill } from "react-lifecycles-compat";
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| 20 | import ResizeObserver from "resize-observer-polyfill";
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| 21 | import { AbstractPureComponent2 } from "../../common";
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| 22 | import { DISPLAYNAME_PREFIX } from "../../common/props";
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| 23 | /** `ResizeSensor` requires a single DOM element child and will error otherwise. */
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| 24 | var ResizeSensor = /** @class */ (function (_super) {
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| 25 | __extends(ResizeSensor, _super);
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| 26 | function ResizeSensor() {
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| 27 | var _this = _super !== null && _super.apply(this, arguments) || this;
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| 28 | _this.element = null;
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| 29 | _this.observer = new ResizeObserver(function (entries) { var _a, _b; return (_b = (_a = _this.props).onResize) === null || _b === void 0 ? void 0 : _b.call(_a, entries); });
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| 30 | return _this;
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| 31 | }
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| 32 | ResizeSensor.prototype.render = function () {
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| 33 | // pass-through render of single child
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| 34 | return React.Children.only(this.props.children);
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| 35 | };
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| 36 | ResizeSensor.prototype.componentDidMount = function () {
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| 37 | this.observeElement();
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| 38 | };
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| 39 | ResizeSensor.prototype.componentDidUpdate = function (prevProps) {
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| 40 | this.observeElement(this.props.observeParents !== prevProps.observeParents);
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| 41 | };
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| 42 | ResizeSensor.prototype.componentWillUnmount = function () {
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| 43 | this.observer.disconnect();
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| 44 | };
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| 45 | /**
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| 46 | * Observe the DOM element, if defined and different from the currently
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| 47 | * observed element. Pass `force` argument to skip element checks and always
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| 48 | * re-observe.
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| 49 | */
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| 50 | ResizeSensor.prototype.observeElement = function (force) {
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| 51 | if (force === void 0) { force = false; }
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| 52 | var element = this.getElement();
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| 53 | if (!(element instanceof Element)) {
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| 54 | // stop everything if not defined
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| 55 | this.observer.disconnect();
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| 56 | return;
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| 57 | }
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| 58 | if (element === this.element && !force) {
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| 59 | // quit if given same element -- nothing to update (unless forced)
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| 60 | return;
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| 61 | }
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| 62 | else {
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| 63 | // clear observer list if new element
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| 64 | this.observer.disconnect();
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| 65 | // remember element reference for next time
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| 66 | this.element = element;
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| 67 | }
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| 68 | // observer callback is invoked immediately when observing new elements
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| 69 | this.observer.observe(element);
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| 70 | if (this.props.observeParents) {
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| 71 | var parent_1 = element.parentElement;
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| 72 | while (parent_1 != null) {
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| 73 | this.observer.observe(parent_1);
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| 74 | parent_1 = parent_1.parentElement;
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| 75 | }
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| 76 | }
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| 77 | };
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| 78 | ResizeSensor.prototype.getElement = function () {
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| 79 | try {
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| 80 | // using findDOMNode for two reasons:
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| 81 | // 1. cloning to insert a ref is unwieldy and not performant.
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| 82 | // 2. ensure that we resolve to an actual DOM node (instead of any JSX ref instance).
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| 83 | // HACKHACK: see https://github.com/palantir/blueprint/issues/3979
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| 84 | /* eslint-disable-next-line react/no-find-dom-node */
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| 85 | return findDOMNode(this);
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| 86 | }
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| 87 | catch (_a) {
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| 88 | // swallow error if findDOMNode is run on unmounted component.
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| 89 | return null;
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| 90 | }
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| 91 | };
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| 92 | ResizeSensor.displayName = DISPLAYNAME_PREFIX + ".ResizeSensor";
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| 93 | ResizeSensor = __decorate([
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| 94 | polyfill
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| 95 | ], ResizeSensor);
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| 96 | return ResizeSensor;
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| 97 | }(AbstractPureComponent2));
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| 98 | export { ResizeSensor };
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| 99 | //# sourceMappingURL=resizeSensor.js.map |
| \ | No newline at end of file |