lucid-ui
Version:
A UI component library from Xandr.
225 lines • 10.2 kB
JavaScript
;
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
if (typeof b !== "function" && b !== null)
throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
t[p] = s[p];
}
return t;
};
return __assign.apply(this, arguments);
};
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __rest = (this && this.__rest) || function (s, e) {
var t = {};
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
t[p] = s[p];
if (s != null && typeof Object.getOwnPropertySymbols === "function")
for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
t[p[i]] = s[p[i]];
}
return t;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var lodash_1 = __importStar(require("lodash"));
var react_1 = __importDefault(require("react"));
var prop_types_1 = __importDefault(require("prop-types"));
var style_helpers_1 = require("../../util/style-helpers");
var dom_helpers_1 = require("../../util/dom-helpers");
var cx = style_helpers_1.lucidClassNames.bind('&-StickySection');
var node = prop_types_1.default.node, number = prop_types_1.default.number, object = prop_types_1.default.object, string = prop_types_1.default.string;
var StickySection = /** @class */ (function (_super) {
__extends(StickySection, _super);
function StickySection() {
var _this = _super !== null && _super.apply(this, arguments) || this;
_this.scrollContainer = react_1.default.createRef();
_this.stickySection = react_1.default.createRef();
_this.stickyFrame = react_1.default.createRef();
_this.state = {
isAboveFold: false,
containerRect: {
bottom: 0,
height: 0,
left: 0,
right: 0,
top: 0,
width: 0,
frameLeft: 0,
scrollWidth: 0,
},
};
_this.handleScroll = function () {
var _a = _this.props, lowerBound = _a.lowerBound, _b = _a.topOffset, topOffset = _b === void 0 ? 0 : _b;
var _c = _this.state, isAboveFold = _c.isAboveFold, containerRect = _c.containerRect;
var nextContainerRect = _this.getContainerRect();
if (window.pageYOffset + topOffset >= nextContainerRect.top) {
if (!isAboveFold) {
_this.setState({
isAboveFold: true,
});
}
}
else {
if (isAboveFold) {
_this.setState({
isAboveFold: false,
});
}
}
if (lodash_1.default.isNumber(lowerBound) && window.pageYOffset >= lowerBound) {
_this.setState({
isAboveFold: false,
});
}
if (containerRect.bottom !== nextContainerRect.bottom ||
containerRect.height !== nextContainerRect.height ||
containerRect.left !== nextContainerRect.left ||
containerRect.right !== nextContainerRect.right ||
containerRect.top !== nextContainerRect.top ||
containerRect.width !== nextContainerRect.width ||
containerRect.scrollWidth !== nextContainerRect.scrollWidth ||
containerRect.frameLeft !== nextContainerRect.frameLeft) {
_this.setState({
containerRect: nextContainerRect,
});
}
};
_this.getContainerRect = function () {
var containerRect = (0, dom_helpers_1.getAbsoluteBoundingClientRect)(_this.scrollContainer.current);
var stickyRect = _this.stickySection.current.getBoundingClientRect();
var frameRect = _this.stickyFrame.current.getBoundingClientRect();
return {
bottom: containerRect.top + stickyRect.height,
height: stickyRect.height,
left: containerRect.left,
right: containerRect.left + stickyRect.width,
top: containerRect.top,
scrollWidth: _this.stickySection.current.scrollWidth,
width: containerRect.width,
frameLeft: frameRect.left,
};
};
return _this;
}
StickySection.prototype.componentDidMount = function () {
var _this = this;
setTimeout(function () {
_this.setState({
containerRect: _this.getContainerRect(),
});
_this.handleScroll();
}, 1);
window.addEventListener('scroll', this.handleScroll, true);
};
StickySection.prototype.componentWillUnmount = function () {
window.removeEventListener('scroll', this.handleScroll, true);
};
StickySection.prototype.render = function () {
var _a = this.props, children = _a.children, className = _a.className, style = _a.style, _b = _a.topOffset, topOffset = _b === void 0 ? 0 : _b, viewportWidth = _a.viewportWidth, passThroughs = __rest(_a, ["children", "className", "style", "topOffset", "viewportWidth"]);
var _c = this.state, isAboveFold = _c.isAboveFold, containerRect = _c.containerRect;
return (react_1.default.createElement("div", __assign({}, (0, lodash_1.omit)(passThroughs, [
'lowerBound',
'topOffset',
'initialState',
'callbackId',
]), { className: cx('&', className), style: __assign(__assign({}, (isAboveFold
? {
height: containerRect.height,
visibility: 'hidden',
}
: {})), style), ref: this.scrollContainer }),
react_1.default.createElement("div", { className: cx('&-sticky-frame'), ref: this.stickyFrame, style: __assign(__assign({}, (isAboveFold
? {
visibility: 'visible',
position: 'fixed',
top: topOffset,
width: lodash_1.default.isNumber(viewportWidth)
? viewportWidth
: containerRect.width,
height: containerRect.height,
overflow: 'hidden',
}
: {})), style) },
react_1.default.createElement("div", { className: cx('&-sticky-section'), ref: this.stickySection, style: __assign(__assign({}, (isAboveFold
? {
position: 'absolute',
top: 0,
left: containerRect.left - containerRect.frameLeft || 0,
width: containerRect.scrollWidth,
height: containerRect.height,
}
: {
position: 'relative',
})), style) }, children))));
};
StickySection.displayName = 'StickySection';
StickySection.peek = {
description: "`StickySection` can be wrapped around any content to make it _stick_ to the top edge of the screen when a user scrolls beyond its initial location.",
categories: ['helpers'],
};
StickySection.propTypes = {
/**
any valid React children
*/
children: node,
/**
Appended to the component-specific class names set on the root element.
*/
className: string,
/**
Styles that are passed through to the root container.
*/
style: object,
/**
Pixel value from the top of the document. When scrolled passed, the
sticky header is no longer sticky, and renders normally.
*/
lowerBound: number,
/**
Top offset threshold before sticking to the top. The sticky content will
display with this offset.
*/
topOffset: number,
};
return StickySection;
}(react_1.default.Component));
exports.default = StickySection;
//# sourceMappingURL=StickySection.js.map