mirador
Version:
An open-source, web-based 'multi-up' viewer that supports zoom-pan-rotate functionality, ability to display/compare simple images, and images with annotations.
178 lines (143 loc) • 8.01 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.ScrollTo = void 0;
var _react = _interopRequireWildcard(require("react"));
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
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, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
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 } }); if (superClass) _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || 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 : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
/**
* ScrollTo ~
*/
var ScrollTo = /*#__PURE__*/function (_Component) {
_inherits(ScrollTo, _Component);
var _super = _createSuper(ScrollTo);
/** */
function ScrollTo(props) {
var _this;
_classCallCheck(this, ScrollTo);
_this = _super.call(this, props);
_this.scrollToRef = /*#__PURE__*/_react["default"].createRef();
return _this;
}
/** */
_createClass(ScrollTo, [{
key: "componentDidMount",
value: function componentDidMount() {
var scrollTo = this.props.scrollTo;
if (!scrollTo) return;
this.scrollToElement();
}
/**
* If the scrollTo prop is true (and has been updated) scroll to the selected element
*/
}, {
key: "componentDidUpdate",
value: function componentDidUpdate(prevProps) {
var scrollTo = this.props.scrollTo;
if (scrollTo && prevProps.scrollTo !== scrollTo) {
this.scrollToElement();
}
}
/**
* Return the getBoundingClientRect() of the containerRef prop
*/
}, {
key: "containerBoundingRect",
value: function containerBoundingRect() {
var containerRef = this.props.containerRef;
if (!containerRef || !containerRef.current || !containerRef.current.domEl) return {};
return containerRef.current.domEl.getBoundingClientRect();
}
/**
* Return the getBoundingClientRect() of the scrollTo ref prop
*/
}, {
key: "scrollToBoundingRect",
value: function scrollToBoundingRect() {
if (!this.elementToScrollTo()) return {};
return this.elementToScrollTo().getBoundingClientRect();
}
/**
* Return the current scrollToRef
*/
}, {
key: "elementToScrollTo",
value: function elementToScrollTo() {
if (!this.scrollToRef || !this.scrollToRef.current) return null;
return this.scrollToRef.current;
}
/**
* The container provided in the containersRef dome structure in which scrolling
* should happen.
*/
}, {
key: "scrollabelContainer",
value: function scrollabelContainer() {
var containerRef = this.props.containerRef;
if (!containerRef || !containerRef.current || !containerRef.current.domEl) return null;
return containerRef.current.domEl.getElementsByClassName('mirador-scrollto-scrollable')[0];
}
/**
* Determine if the scrollTo element is visible within the given containerRef prop.
* Currently only supports vertical elements but could be extended to support horizontal
*/
}, {
key: "elementIsVisible",
value: function elementIsVisible() {
var offsetTop = this.props.offsetTop;
if (this.scrollToBoundingRect().top < this.containerBoundingRect().top + offsetTop) {
return false;
}
if (this.scrollToBoundingRect().bottom > this.containerBoundingRect().bottom) {
return false;
}
return true;
}
/**
* Scroll to the element if it is set to be scolled and is not visible
*/
}, {
key: "scrollToElement",
value: function scrollToElement() {
var _this$props = this.props,
offsetTop = _this$props.offsetTop,
scrollTo = _this$props.scrollTo;
if (!scrollTo) return;
if (!this.elementToScrollTo()) return;
if (this.elementIsVisible()) return;
if (!this.scrollabelContainer()) return;
var scrollBy = this.elementToScrollTo().offsetTop - this.containerBoundingRect().height / 2 + offsetTop;
this.scrollabelContainer().scrollTo(0, scrollBy);
}
/**
* Returns the rendered component
*/
}, {
key: "render",
value: function render() {
var _this$props2 = this.props,
children = _this$props2.children,
scrollTo = _this$props2.scrollTo;
if (!scrollTo) return children;
return /*#__PURE__*/_react["default"].createElement("div", {
ref: this.scrollToRef
}, children);
}
}]);
return ScrollTo;
}(_react.Component);
exports.ScrollTo = ScrollTo;
ScrollTo.defaultProps = {
offsetTop: 0
};