1004 lines
34 KiB
JavaScript
1004 lines
34 KiB
JavaScript
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'use strict';
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Object.defineProperty(exports, '__esModule', { value: true });
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var React = require('react');
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var utils = require('primereact/utils');
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function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }
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var React__default = /*#__PURE__*/_interopDefaultLegacy(React);
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function _classCallCheck(instance, Constructor) {
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if (!(instance instanceof Constructor)) {
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throw new TypeError("Cannot call a class as a function");
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}
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}
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function _defineProperties(target, props) {
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for (var i = 0; i < props.length; i++) {
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var descriptor = props[i];
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descriptor.enumerable = descriptor.enumerable || false;
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descriptor.configurable = true;
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if ("value" in descriptor) descriptor.writable = true;
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Object.defineProperty(target, descriptor.key, descriptor);
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}
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}
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function _createClass(Constructor, protoProps, staticProps) {
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if (protoProps) _defineProperties(Constructor.prototype, protoProps);
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if (staticProps) _defineProperties(Constructor, staticProps);
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Object.defineProperty(Constructor, "prototype", {
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writable: false
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});
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return Constructor;
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}
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function _assertThisInitialized(self) {
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if (self === void 0) {
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throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
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}
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return self;
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}
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function _setPrototypeOf(o, p) {
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_setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
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o.__proto__ = p;
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return o;
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};
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return _setPrototypeOf(o, p);
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}
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function _inherits(subClass, superClass) {
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if (typeof superClass !== "function" && superClass !== null) {
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throw new TypeError("Super expression must either be null or a function");
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}
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subClass.prototype = Object.create(superClass && superClass.prototype, {
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constructor: {
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value: subClass,
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writable: true,
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configurable: true
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}
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});
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Object.defineProperty(subClass, "prototype", {
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writable: false
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});
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if (superClass) _setPrototypeOf(subClass, superClass);
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}
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function _typeof(obj) {
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"@babel/helpers - typeof";
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return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) {
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return typeof obj;
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} : function (obj) {
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return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
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}, _typeof(obj);
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}
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function _possibleConstructorReturn(self, call) {
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if (call && (_typeof(call) === "object" || typeof call === "function")) {
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return call;
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} else if (call !== void 0) {
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throw new TypeError("Derived constructors may only return object or undefined");
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}
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return _assertThisInitialized(self);
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}
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function _getPrototypeOf(o) {
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_getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
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return o.__proto__ || Object.getPrototypeOf(o);
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};
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return _getPrototypeOf(o);
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}
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function _defineProperty(obj, key, value) {
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if (key in obj) {
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Object.defineProperty(obj, key, {
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value: value,
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enumerable: true,
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configurable: true,
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writable: true
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});
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} else {
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obj[key] = value;
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}
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return obj;
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}
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function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); enumerableOnly && (symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; })), keys.push.apply(keys, symbols); } return keys; }
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function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = null != arguments[i] ? arguments[i] : {}; i % 2 ? ownKeys(Object(source), !0).forEach(function (key) { _defineProperty(target, key, source[key]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } return target; }
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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); }; }
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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; } }
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var VirtualScroller = /*#__PURE__*/function (_Component) {
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_inherits(VirtualScroller, _Component);
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var _super = _createSuper(VirtualScroller);
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function VirtualScroller(props) {
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var _this;
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_classCallCheck(this, VirtualScroller);
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_this = _super.call(this, props);
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var isBoth = _this.isBoth();
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_this.state = {
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first: isBoth ? {
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rows: 0,
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cols: 0
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} : 0,
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last: isBoth ? {
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rows: 0,
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cols: 0
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} : 0,
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numItemsInViewport: isBoth ? {
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rows: 0,
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cols: 0
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} : 0,
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numToleratedItems: props.numToleratedItems,
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loading: props.loading,
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loaderArr: []
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};
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_this.onScroll = _this.onScroll.bind(_assertThisInitialized(_this));
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_this.lastScrollPos = isBoth ? {
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top: 0,
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left: 0
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} : 0;
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return _this;
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}
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_createClass(VirtualScroller, [{
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key: "scrollTo",
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value: function scrollTo(options) {
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this.el && this.el.scrollTo(options);
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}
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}, {
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key: "scrollToIndex",
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value: function scrollToIndex(index) {
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var _this2 = this;
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var behavior = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'auto';
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var isBoth = this.isBoth();
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var isHorizontal = this.isHorizontal();
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var first = this.state.first;
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var _this$calculateNumIte = this.calculateNumItems(),
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numToleratedItems = _this$calculateNumIte.numToleratedItems;
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var itemSize = this.props.itemSize;
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var contentPos = this.getContentPosition();
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var calculateFirst = function calculateFirst() {
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var _index = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
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var _numT = arguments.length > 1 ? arguments[1] : undefined;
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return _index <= _numT ? 0 : _index;
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};
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var calculateCoord = function calculateCoord(_first, _size, _cpos) {
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return _first * _size + _cpos;
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};
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var scrollTo = function scrollTo() {
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var left = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
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var top = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
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return _this2.scrollTo({
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left: left,
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top: top,
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behavior: behavior
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});
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};
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if (isBoth) {
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var newFirst = {
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rows: calculateFirst(index[0], numToleratedItems[0]),
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cols: calculateFirst(index[1], numToleratedItems[1])
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};
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if (newFirst.rows !== first.rows || newFirst.cols !== first.cols) {
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scrollTo(calculateCoord(newFirst.cols, itemSize[1], contentPos.left), calculateCoord(newFirst.rows, itemSize[0], contentPos.top));
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this.setState({
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first: newFirst
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});
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}
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} else {
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var _newFirst = calculateFirst(index, numToleratedItems);
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if (_newFirst !== first) {
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isHorizontal ? scrollTo(calculateCoord(_newFirst, itemSize, contentPos.left), 0) : scrollTo(0, calculateCoord(_newFirst, itemSize, contentPos.top));
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this.setState({
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first: _newFirst
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});
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}
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}
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}
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}, {
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key: "scrollInView",
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value: function scrollInView(index, to) {
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var _this3 = this;
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var behavior = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 'auto';
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if (to) {
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var isBoth = this.isBoth();
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var isHorizontal = this.isHorizontal();
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var _this$getRenderedRang = this.getRenderedRange(),
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first = _this$getRenderedRang.first,
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viewport = _this$getRenderedRang.viewport;
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var itemSize = this.props.itemSize;
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var scrollTo = function scrollTo() {
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var left = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
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var top = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
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return _this3.scrollTo({
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left: left,
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top: top,
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behavior: behavior
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});
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};
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var isToStart = to === 'to-start';
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var isToEnd = to === 'to-end';
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if (isToStart) {
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if (isBoth) {
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if (viewport.first.rows - first.rows > index[0]) {
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scrollTo(viewport.first.cols * itemSize, (viewport.first.rows - 1) * itemSize);
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} else if (viewport.first.cols - first.cols > index[1]) {
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scrollTo((viewport.first.cols - 1) * itemSize, viewport.first.rows * itemSize);
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}
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} else {
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if (viewport.first - first > index) {
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var pos = (viewport.first - 1) * itemSize;
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isHorizontal ? scrollTo(pos, 0) : scrollTo(0, pos);
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}
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}
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} else if (isToEnd) {
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if (isBoth) {
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if (viewport.last.rows - first.rows <= index[0] + 1) {
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scrollTo(viewport.first.cols * itemSize, (viewport.first.rows + 1) * itemSize);
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} else if (viewport.last.cols - first.cols <= index[1] + 1) {
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scrollTo((viewport.first.cols + 1) * itemSize, viewport.first.rows * itemSize);
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}
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} else {
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if (viewport.last - first <= index + 1) {
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var _pos2 = (viewport.first + 1) * itemSize;
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isHorizontal ? scrollTo(_pos2, 0) : scrollTo(0, _pos2);
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}
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}
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}
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} else {
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this.scrollToIndex(index, behavior);
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}
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}
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}, {
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key: "getRows",
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value: function getRows() {
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return this.state.loading ? this.props.loaderDisabled ? this.state.loaderArr : [] : this.loadedItems();
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}
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}, {
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key: "getColumns",
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value: function getColumns() {
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if (this.props.columns) {
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var isBoth = this.isBoth();
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var isHorizontal = this.isHorizontal();
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if (isBoth || isHorizontal) {
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return this.state.loading && this.props.loaderDisabled ? isBoth ? this.state.loaderArr[0] : this.state.loaderArr : this.props.columns.slice(isBoth ? this.state.first.cols : this.state.first, isBoth ? this.state.last.cols : this.state.last);
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}
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}
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return this.props.columns;
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}
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}, {
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key: "getRenderedRange",
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value: function getRenderedRange() {
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var isBoth = this.isBoth();
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var isHorizontal = this.isHorizontal();
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var _this$state = this.state,
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first = _this$state.first,
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last = _this$state.last,
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numItemsInViewport = _this$state.numItemsInViewport;
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var itemSize = this.props.itemSize;
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var calculateFirstInViewport = function calculateFirstInViewport(_pos, _size) {
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return Math.floor(_pos / (_size || _pos));
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};
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var firstInViewport = first;
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var lastInViewport = 0;
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if (this.el) {
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var scrollTop = this.el.scrollTop;
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var scrollLeft = this.el.scrollLeft;
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if (isBoth) {
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firstInViewport = {
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rows: calculateFirstInViewport(scrollTop, itemSize[0]),
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cols: calculateFirstInViewport(scrollLeft, itemSize[1])
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};
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lastInViewport = {
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rows: firstInViewport.rows + numItemsInViewport.rows,
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cols: firstInViewport.cols + numItemsInViewport.cols
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};
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} else {
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var scrollPos = isHorizontal ? scrollLeft : scrollTop;
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firstInViewport = calculateFirstInViewport(scrollPos, itemSize);
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lastInViewport = firstInViewport + numItemsInViewport;
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}
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}
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return {
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first: first,
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last: last,
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viewport: {
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first: firstInViewport,
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last: lastInViewport
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}
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};
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}
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}, {
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key: "isVertical",
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value: function isVertical() {
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return this.props.orientation === 'vertical';
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}
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}, {
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key: "isHorizontal",
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value: function isHorizontal() {
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return this.props.orientation === 'horizontal';
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}
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}, {
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key: "isBoth",
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value: function isBoth() {
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|
return this.props.orientation === 'both';
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "calculateNumItems",
|
||
|
|
value: function calculateNumItems() {
|
||
|
|
var isBoth = this.isBoth();
|
||
|
|
var isHorizontal = this.isHorizontal();
|
||
|
|
var itemSize = this.props.itemSize;
|
||
|
|
var contentPos = this.getContentPosition();
|
||
|
|
var contentWidth = this.el ? this.el.offsetWidth - contentPos.left : 0;
|
||
|
|
var contentHeight = this.el ? this.el.offsetHeight - contentPos.top : 0;
|
||
|
|
|
||
|
|
var calculateNumItemsInViewport = function calculateNumItemsInViewport(_contentSize, _itemSize) {
|
||
|
|
return Math.ceil(_contentSize / (_itemSize || _contentSize));
|
||
|
|
};
|
||
|
|
|
||
|
|
var calculateNumToleratedItems = function calculateNumToleratedItems(_numItems) {
|
||
|
|
return Math.ceil(_numItems / 2);
|
||
|
|
};
|
||
|
|
|
||
|
|
var numItemsInViewport = isBoth ? {
|
||
|
|
rows: calculateNumItemsInViewport(contentHeight, itemSize[0]),
|
||
|
|
cols: calculateNumItemsInViewport(contentWidth, itemSize[1])
|
||
|
|
} : calculateNumItemsInViewport(isHorizontal ? contentWidth : contentHeight, itemSize);
|
||
|
|
var numToleratedItems = this.state.numToleratedItems || (isBoth ? [calculateNumToleratedItems(numItemsInViewport.rows), calculateNumToleratedItems(numItemsInViewport.cols)] : calculateNumToleratedItems(numItemsInViewport));
|
||
|
|
return {
|
||
|
|
numItemsInViewport: numItemsInViewport,
|
||
|
|
numToleratedItems: numToleratedItems
|
||
|
|
};
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "calculateOptions",
|
||
|
|
value: function calculateOptions() {
|
||
|
|
var _this4 = this;
|
||
|
|
|
||
|
|
var isBoth = this.isBoth();
|
||
|
|
var first = this.state.first;
|
||
|
|
|
||
|
|
var _this$calculateNumIte2 = this.calculateNumItems(),
|
||
|
|
numItemsInViewport = _this$calculateNumIte2.numItemsInViewport,
|
||
|
|
numToleratedItems = _this$calculateNumIte2.numToleratedItems;
|
||
|
|
|
||
|
|
var calculateLast = function calculateLast(_first, _num, _numT, _isCols) {
|
||
|
|
return _this4.getLast(_first + _num + (_first < _numT ? 2 : 3) * _numT, _isCols);
|
||
|
|
};
|
||
|
|
|
||
|
|
var last = isBoth ? {
|
||
|
|
rows: calculateLast(first.rows, numItemsInViewport.rows, numToleratedItems[0]),
|
||
|
|
cols: calculateLast(first.cols, numItemsInViewport.cols, numToleratedItems[1], true)
|
||
|
|
} : calculateLast(first, numItemsInViewport, numToleratedItems);
|
||
|
|
var state = {
|
||
|
|
numItemsInViewport: numItemsInViewport,
|
||
|
|
last: last,
|
||
|
|
numToleratedItems: numToleratedItems
|
||
|
|
};
|
||
|
|
|
||
|
|
if (this.props.showLoader) {
|
||
|
|
state['loaderArr'] = isBoth ? Array.from({
|
||
|
|
length: numItemsInViewport.rows
|
||
|
|
}).map(function () {
|
||
|
|
return Array.from({
|
||
|
|
length: numItemsInViewport.cols
|
||
|
|
});
|
||
|
|
}) : Array.from({
|
||
|
|
length: numItemsInViewport
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
this.setState(state, function () {
|
||
|
|
if (_this4.props.lazy) {
|
||
|
|
_this4.props.onLazyLoad && _this4.props.onLazyLoad({
|
||
|
|
first: _this4.state.first,
|
||
|
|
last: _this4.state.last
|
||
|
|
});
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "getLast",
|
||
|
|
value: function getLast() {
|
||
|
|
var last = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
|
||
|
|
var isCols = arguments.length > 1 ? arguments[1] : undefined;
|
||
|
|
|
||
|
|
if (this.props.items) {
|
||
|
|
return Math.min(isCols ? (this.props.columns || this.props.items[0]).length : this.props.items.length, last);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "getContentPosition",
|
||
|
|
value: function getContentPosition() {
|
||
|
|
if (this.content) {
|
||
|
|
var style = getComputedStyle(this.content);
|
||
|
|
var left = parseInt(style.paddingLeft, 10) + Math.max(parseInt(style.left, 10), 0);
|
||
|
|
var right = parseInt(style.paddingRight, 10) + Math.max(parseInt(style.right, 10), 0);
|
||
|
|
var top = parseInt(style.paddingTop, 10) + Math.max(parseInt(style.top, 10), 0);
|
||
|
|
var bottom = parseInt(style.paddingBottom, 10) + Math.max(parseInt(style.bottom, 10), 0);
|
||
|
|
return {
|
||
|
|
left: left,
|
||
|
|
right: right,
|
||
|
|
top: top,
|
||
|
|
bottom: bottom,
|
||
|
|
x: left + right,
|
||
|
|
y: top + bottom
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
return {
|
||
|
|
left: 0,
|
||
|
|
right: 0,
|
||
|
|
top: 0,
|
||
|
|
bottom: 0,
|
||
|
|
x: 0,
|
||
|
|
y: 0
|
||
|
|
};
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "setSize",
|
||
|
|
value: function setSize() {
|
||
|
|
var _this5 = this;
|
||
|
|
|
||
|
|
if (this.el) {
|
||
|
|
var isBoth = this.isBoth();
|
||
|
|
var isHorizontal = this.isHorizontal();
|
||
|
|
var parentElement = this.el.parentElement;
|
||
|
|
var width = this.props.scrollWidth || "".concat(this.el.offsetWidth || parentElement.offsetWidth, "px");
|
||
|
|
var height = this.props.scrollHeight || "".concat(this.el.offsetHeight || parentElement.offsetHeight, "px");
|
||
|
|
|
||
|
|
var setProp = function setProp(_name, _value) {
|
||
|
|
return _this5.el.style[_name] = _value;
|
||
|
|
};
|
||
|
|
|
||
|
|
if (isBoth || isHorizontal) {
|
||
|
|
setProp('height', height);
|
||
|
|
setProp('width', width);
|
||
|
|
} else {
|
||
|
|
setProp('height', height);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "setSpacerSize",
|
||
|
|
value: function setSpacerSize() {
|
||
|
|
var _this6 = this;
|
||
|
|
|
||
|
|
var items = this.props.items;
|
||
|
|
|
||
|
|
if (this.spacer && items) {
|
||
|
|
var isBoth = this.isBoth();
|
||
|
|
var isHorizontal = this.isHorizontal();
|
||
|
|
var itemSize = this.props.itemSize;
|
||
|
|
var contentPos = this.getContentPosition();
|
||
|
|
|
||
|
|
var setProp = function setProp(_name, _value, _size) {
|
||
|
|
var _cpos = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 0;
|
||
|
|
|
||
|
|
return _this6.spacer.style[_name] = (_value || []).length * _size + _cpos + 'px';
|
||
|
|
};
|
||
|
|
|
||
|
|
if (isBoth) {
|
||
|
|
setProp('height', items, itemSize[0], contentPos.y);
|
||
|
|
setProp('width', this.props.columns || items[1], itemSize[1], contentPos.x);
|
||
|
|
} else {
|
||
|
|
isHorizontal ? setProp('width', this.props.columns || items, itemSize, contentPos.x) : setProp('height', items, itemSize, contentPos.y);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "setContentPosition",
|
||
|
|
value: function setContentPosition(pos) {
|
||
|
|
var _this7 = this;
|
||
|
|
|
||
|
|
if (this.content) {
|
||
|
|
var isBoth = this.isBoth();
|
||
|
|
var isHorizontal = this.isHorizontal();
|
||
|
|
var first = pos ? pos.first : this.state.first;
|
||
|
|
var itemSize = this.props.itemSize;
|
||
|
|
|
||
|
|
var calculateTranslateVal = function calculateTranslateVal(_first, _size) {
|
||
|
|
return _first * _size;
|
||
|
|
};
|
||
|
|
|
||
|
|
var setTransform = function setTransform() {
|
||
|
|
var _x = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
|
||
|
|
|
||
|
|
var _y = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
|
||
|
|
|
||
|
|
_this7.sticky && (_this7.sticky.style.top = "-".concat(_y, "px"));
|
||
|
|
_this7.content.style.transform = "translate3d(".concat(_x, "px, ").concat(_y, "px, 0)");
|
||
|
|
};
|
||
|
|
|
||
|
|
if (isBoth) {
|
||
|
|
setTransform(calculateTranslateVal(first.cols, itemSize[1]), calculateTranslateVal(first.rows, itemSize[0]));
|
||
|
|
} else {
|
||
|
|
var translateVal = calculateTranslateVal(first, itemSize);
|
||
|
|
isHorizontal ? setTransform(translateVal, 0) : setTransform(0, translateVal);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "onScrollPositionChange",
|
||
|
|
value: function onScrollPositionChange(event) {
|
||
|
|
var _this8 = this;
|
||
|
|
|
||
|
|
var target = event.target;
|
||
|
|
var isBoth = this.isBoth();
|
||
|
|
var isHorizontal = this.isHorizontal();
|
||
|
|
var _this$state2 = this.state,
|
||
|
|
first = _this$state2.first,
|
||
|
|
last = _this$state2.last,
|
||
|
|
numItemsInViewport = _this$state2.numItemsInViewport,
|
||
|
|
numToleratedItems = _this$state2.numToleratedItems;
|
||
|
|
var itemSize = this.props.itemSize;
|
||
|
|
var contentPos = this.getContentPosition();
|
||
|
|
|
||
|
|
var calculateScrollPos = function calculateScrollPos(_pos, _cpos) {
|
||
|
|
return _pos ? _pos > _cpos ? _pos - _cpos : _pos : 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
var calculateCurrentIndex = function calculateCurrentIndex(_pos, _size) {
|
||
|
|
return Math.floor(_pos / (_size || _pos));
|
||
|
|
};
|
||
|
|
|
||
|
|
var calculateTriggerIndex = function calculateTriggerIndex(_currentIndex, _first, _last, _num, _numT, _isScrollDownOrRight) {
|
||
|
|
return _currentIndex <= _numT ? _numT : _isScrollDownOrRight ? _last - _num - _numT : _first + _numT - 1;
|
||
|
|
};
|
||
|
|
|
||
|
|
var calculateFirst = function calculateFirst(_currentIndex, _triggerIndex, _first, _last, _num, _numT, _isScrollDownOrRight) {
|
||
|
|
if (_currentIndex <= _numT) return 0;else return Math.max(0, _isScrollDownOrRight ? _currentIndex < _triggerIndex ? _first : _currentIndex - _numT : _currentIndex > _triggerIndex ? _first : _currentIndex - 2 * _numT);
|
||
|
|
};
|
||
|
|
|
||
|
|
var calculateLast = function calculateLast(_currentIndex, _first, _last, _num, _numT, _isCols) {
|
||
|
|
var lastValue = _first + _num + 2 * _numT;
|
||
|
|
|
||
|
|
if (_currentIndex >= _numT) {
|
||
|
|
lastValue += _numT + 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return _this8.getLast(lastValue, _isCols);
|
||
|
|
};
|
||
|
|
|
||
|
|
var scrollTop = calculateScrollPos(target.scrollTop, contentPos.top);
|
||
|
|
var scrollLeft = calculateScrollPos(target.scrollLeft, contentPos.left);
|
||
|
|
var newFirst = 0;
|
||
|
|
var newLast = last;
|
||
|
|
var isRangeChanged = false;
|
||
|
|
|
||
|
|
if (isBoth) {
|
||
|
|
var isScrollDown = this.lastScrollPos.top <= scrollTop;
|
||
|
|
var isScrollRight = this.lastScrollPos.left <= scrollLeft;
|
||
|
|
var currentIndex = {
|
||
|
|
rows: calculateCurrentIndex(scrollTop, itemSize[0]),
|
||
|
|
cols: calculateCurrentIndex(scrollLeft, itemSize[1])
|
||
|
|
};
|
||
|
|
var triggerIndex = {
|
||
|
|
rows: calculateTriggerIndex(currentIndex.rows, first.rows, last.rows, numItemsInViewport.rows, numToleratedItems[0], isScrollDown),
|
||
|
|
cols: calculateTriggerIndex(currentIndex.cols, first.cols, last.cols, numItemsInViewport.cols, numToleratedItems[1], isScrollRight)
|
||
|
|
};
|
||
|
|
newFirst = {
|
||
|
|
rows: calculateFirst(currentIndex.rows, triggerIndex.rows, first.rows, last.rows, numItemsInViewport.rows, numToleratedItems[0], isScrollDown),
|
||
|
|
cols: calculateFirst(currentIndex.cols, triggerIndex.cols, first.cols, last.cols, numItemsInViewport.cols, numToleratedItems[1], isScrollRight)
|
||
|
|
};
|
||
|
|
newLast = {
|
||
|
|
rows: calculateLast(currentIndex.rows, newFirst.rows, last.rows, numItemsInViewport.rows, numToleratedItems[0]),
|
||
|
|
cols: calculateLast(currentIndex.cols, newFirst.cols, last.cols, numItemsInViewport.cols, numToleratedItems[1], true)
|
||
|
|
};
|
||
|
|
isRangeChanged = newFirst.rows !== first.rows && newLast.rows !== last.rows || newFirst.cols !== first.cols && newLast.cols !== last.cols;
|
||
|
|
this.lastScrollPos = {
|
||
|
|
top: scrollTop,
|
||
|
|
left: scrollLeft
|
||
|
|
};
|
||
|
|
} else {
|
||
|
|
var scrollPos = isHorizontal ? scrollLeft : scrollTop;
|
||
|
|
var isScrollDownOrRight = this.lastScrollPos <= scrollPos;
|
||
|
|
|
||
|
|
var _currentIndex2 = calculateCurrentIndex(scrollPos, itemSize);
|
||
|
|
|
||
|
|
var _triggerIndex2 = calculateTriggerIndex(_currentIndex2, first, last, numItemsInViewport, numToleratedItems, isScrollDownOrRight);
|
||
|
|
|
||
|
|
newFirst = calculateFirst(_currentIndex2, _triggerIndex2, first, last, numItemsInViewport, numToleratedItems, isScrollDownOrRight);
|
||
|
|
newLast = calculateLast(_currentIndex2, newFirst, last, numItemsInViewport, numToleratedItems);
|
||
|
|
isRangeChanged = newFirst !== first && newLast !== last;
|
||
|
|
this.lastScrollPos = scrollPos;
|
||
|
|
}
|
||
|
|
|
||
|
|
return {
|
||
|
|
first: newFirst,
|
||
|
|
last: newLast,
|
||
|
|
isRangeChanged: isRangeChanged
|
||
|
|
};
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "onScrollChange",
|
||
|
|
value: function onScrollChange(event) {
|
||
|
|
var _this9 = this;
|
||
|
|
|
||
|
|
var _this$onScrollPositio = this.onScrollPositionChange(event),
|
||
|
|
first = _this$onScrollPositio.first,
|
||
|
|
last = _this$onScrollPositio.last,
|
||
|
|
isRangeChanged = _this$onScrollPositio.isRangeChanged;
|
||
|
|
|
||
|
|
if (isRangeChanged) {
|
||
|
|
var newState = {
|
||
|
|
first: first,
|
||
|
|
last: last
|
||
|
|
};
|
||
|
|
this.setContentPosition(newState);
|
||
|
|
this.setState(newState, function () {
|
||
|
|
_this9.props.onScrollIndexChange && _this9.props.onScrollIndexChange(newState);
|
||
|
|
|
||
|
|
if (_this9.props.lazy) {
|
||
|
|
_this9.props.onLazyLoad && _this9.props.onLazyLoad(newState);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "onScroll",
|
||
|
|
value: function onScroll(event) {
|
||
|
|
var _this10 = this;
|
||
|
|
|
||
|
|
this.props.onScroll && this.props.onScroll(event);
|
||
|
|
|
||
|
|
if (this.props.delay) {
|
||
|
|
if (this.scrollTimeout) {
|
||
|
|
clearTimeout(this.scrollTimeout);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!this.state.loading && this.props.showLoader) {
|
||
|
|
var _this$onScrollPositio2 = this.onScrollPositionChange(event),
|
||
|
|
changed = _this$onScrollPositio2.isRangeChanged;
|
||
|
|
|
||
|
|
changed && this.setState({
|
||
|
|
loading: true
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
this.scrollTimeout = setTimeout(function () {
|
||
|
|
_this10.onScrollChange(event);
|
||
|
|
|
||
|
|
if (_this10.state.loading && _this10.props.showLoader && !_this10.props.lazy) {
|
||
|
|
_this10.setState({
|
||
|
|
loading: false
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}, this.props.delay);
|
||
|
|
} else {
|
||
|
|
this.onScrollChange(event);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "getOptions",
|
||
|
|
value: function getOptions(renderedIndex) {
|
||
|
|
var first = this.state.first;
|
||
|
|
var count = (this.props.items || []).length;
|
||
|
|
var index = this.isBoth() ? first.rows + renderedIndex : first + renderedIndex;
|
||
|
|
return {
|
||
|
|
index: index,
|
||
|
|
count: count,
|
||
|
|
first: index === 0,
|
||
|
|
last: index === count - 1,
|
||
|
|
even: index % 2 === 0,
|
||
|
|
odd: index % 2 !== 0,
|
||
|
|
props: this.props
|
||
|
|
};
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "loaderOptions",
|
||
|
|
value: function loaderOptions(index, extOptions) {
|
||
|
|
var count = this.state.loaderArr.length;
|
||
|
|
return _objectSpread({
|
||
|
|
index: index,
|
||
|
|
count: count,
|
||
|
|
first: index === 0,
|
||
|
|
last: index === count - 1,
|
||
|
|
even: index % 2 === 0,
|
||
|
|
odd: index % 2 !== 0,
|
||
|
|
props: this.props
|
||
|
|
}, extOptions);
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "loadedItems",
|
||
|
|
value: function loadedItems() {
|
||
|
|
var _this11 = this;
|
||
|
|
|
||
|
|
var items = this.props.items;
|
||
|
|
|
||
|
|
if (items && !this.state.loading) {
|
||
|
|
var isBoth = this.isBoth();
|
||
|
|
var isHorizontal = this.isHorizontal();
|
||
|
|
var _this$state3 = this.state,
|
||
|
|
first = _this$state3.first,
|
||
|
|
last = _this$state3.last;
|
||
|
|
if (isBoth) return items.slice(first.rows, last.rows).map(function (item) {
|
||
|
|
return _this11.props.columns ? item : item.slice(first.cols, last.cols);
|
||
|
|
});else if (isHorizontal && this.props.columns) return items;else return items.slice(first, last);
|
||
|
|
}
|
||
|
|
|
||
|
|
return [];
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "isPropChanged",
|
||
|
|
value: function isPropChanged(prevProps) {
|
||
|
|
var _this12 = this;
|
||
|
|
|
||
|
|
var props = ['itemSize', 'scrollHeight'];
|
||
|
|
return props.some(function (p) {
|
||
|
|
return !utils.ObjectUtils.equals(prevProps[p], _this12.props[p]);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "init",
|
||
|
|
value: function init() {
|
||
|
|
this.setSize();
|
||
|
|
this.calculateOptions();
|
||
|
|
this.setSpacerSize();
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "componentDidMount",
|
||
|
|
value: function componentDidMount() {
|
||
|
|
this.init();
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "componentDidUpdate",
|
||
|
|
value: function componentDidUpdate(prevProps, prevState) {
|
||
|
|
if (!prevProps.items || prevProps.items.length !== (this.props.items || []).length || this.isPropChanged(prevProps)) {
|
||
|
|
this.init();
|
||
|
|
}
|
||
|
|
|
||
|
|
if (this.props.lazy && prevProps.loading !== this.props.loading && this.state.loading !== this.props.loading) {
|
||
|
|
this.setState({
|
||
|
|
loading: this.props.loading
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
if (prevProps.orientation !== this.props.orientation) {
|
||
|
|
this.lastScrollPos = this.isBoth() ? {
|
||
|
|
top: 0,
|
||
|
|
left: 0
|
||
|
|
} : 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "renderLoaderItem",
|
||
|
|
value: function renderLoaderItem(index) {
|
||
|
|
var extOptions = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
|
||
|
|
var options = this.loaderOptions(index, extOptions);
|
||
|
|
var content = utils.ObjectUtils.getJSXElement(this.props.loadingTemplate, options);
|
||
|
|
return /*#__PURE__*/React__default["default"].createElement(React__default["default"].Fragment, {
|
||
|
|
key: index
|
||
|
|
}, content);
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "renderLoader",
|
||
|
|
value: function renderLoader() {
|
||
|
|
var _this13 = this;
|
||
|
|
|
||
|
|
if (!this.props.loaderDisabled && this.props.showLoader && this.state.loading) {
|
||
|
|
var className = utils.classNames('p-virtualscroller-loader', {
|
||
|
|
'p-component-overlay': !this.props.loadingTemplate
|
||
|
|
});
|
||
|
|
var content = /*#__PURE__*/React__default["default"].createElement("i", {
|
||
|
|
className: "p-virtualscroller-loading-icon pi pi-spinner pi-spin"
|
||
|
|
});
|
||
|
|
|
||
|
|
if (this.props.loadingTemplate) {
|
||
|
|
var isBoth = this.isBoth();
|
||
|
|
var numItemsInViewport = this.state.numItemsInViewport;
|
||
|
|
content = this.state.loaderArr.map(function (_, index) {
|
||
|
|
return _this13.renderLoaderItem(index, isBoth && {
|
||
|
|
numCols: numItemsInViewport.cols
|
||
|
|
});
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
return /*#__PURE__*/React__default["default"].createElement("div", {
|
||
|
|
className: className
|
||
|
|
}, content);
|
||
|
|
}
|
||
|
|
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "renderSpacer",
|
||
|
|
value: function renderSpacer() {
|
||
|
|
var _this14 = this;
|
||
|
|
|
||
|
|
if (this.props.showSpacer) {
|
||
|
|
return /*#__PURE__*/React__default["default"].createElement("div", {
|
||
|
|
ref: function ref(el) {
|
||
|
|
return _this14.spacer = el;
|
||
|
|
},
|
||
|
|
className: "p-virtualscroller-spacer"
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "renderItem",
|
||
|
|
value: function renderItem(item, index) {
|
||
|
|
var options = this.getOptions(index);
|
||
|
|
var content = utils.ObjectUtils.getJSXElement(this.props.itemTemplate, item, options);
|
||
|
|
return /*#__PURE__*/React__default["default"].createElement(React__default["default"].Fragment, {
|
||
|
|
key: options.index
|
||
|
|
}, content);
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "renderItems",
|
||
|
|
value: function renderItems(loadedItems) {
|
||
|
|
var _this15 = this;
|
||
|
|
|
||
|
|
return loadedItems.map(function (item, index) {
|
||
|
|
return _this15.renderItem(item, index);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "renderContent",
|
||
|
|
value: function renderContent() {
|
||
|
|
var _this16 = this;
|
||
|
|
|
||
|
|
var loadedItems = this.loadedItems();
|
||
|
|
var items = this.renderItems(loadedItems);
|
||
|
|
var className = utils.classNames('p-virtualscroller-content', {
|
||
|
|
'p-virtualscroller-loading': this.state.loading
|
||
|
|
});
|
||
|
|
var content = /*#__PURE__*/React__default["default"].createElement("div", {
|
||
|
|
className: className,
|
||
|
|
ref: function ref(el) {
|
||
|
|
return _this16.content = el;
|
||
|
|
}
|
||
|
|
}, items);
|
||
|
|
|
||
|
|
if (this.props.contentTemplate) {
|
||
|
|
var defaultOptions = {
|
||
|
|
className: className,
|
||
|
|
contentRef: function contentRef(el) {
|
||
|
|
return _this16.content = el;
|
||
|
|
},
|
||
|
|
spacerRef: function spacerRef(el) {
|
||
|
|
return _this16.spacer = el;
|
||
|
|
},
|
||
|
|
stickyRef: function stickyRef(el) {
|
||
|
|
return _this16.sticky = el;
|
||
|
|
},
|
||
|
|
items: loadedItems,
|
||
|
|
getItemOptions: function getItemOptions(index) {
|
||
|
|
return _this16.getOptions(index);
|
||
|
|
},
|
||
|
|
children: items,
|
||
|
|
element: content,
|
||
|
|
props: this.props,
|
||
|
|
loading: this.state.loading,
|
||
|
|
getLoaderOptions: function getLoaderOptions(index, ext) {
|
||
|
|
return _this16.loaderOptions(index, ext);
|
||
|
|
},
|
||
|
|
loadingTemplate: this.props.loadingTemplate,
|
||
|
|
itemSize: this.props.itemSize,
|
||
|
|
rows: this.getRows(),
|
||
|
|
columns: this.getColumns(),
|
||
|
|
vertical: this.isVertical(),
|
||
|
|
horizontal: this.isHorizontal(),
|
||
|
|
both: this.isBoth()
|
||
|
|
};
|
||
|
|
return utils.ObjectUtils.getJSXElement(this.props.contentTemplate, defaultOptions);
|
||
|
|
}
|
||
|
|
|
||
|
|
return content;
|
||
|
|
}
|
||
|
|
}, {
|
||
|
|
key: "render",
|
||
|
|
value: function render() {
|
||
|
|
var _this17 = this;
|
||
|
|
|
||
|
|
if (this.props.disabled) {
|
||
|
|
var content = utils.ObjectUtils.getJSXElement(this.props.contentTemplate, {
|
||
|
|
items: this.props.items,
|
||
|
|
rows: this.props.items,
|
||
|
|
columns: this.props.columns
|
||
|
|
});
|
||
|
|
return /*#__PURE__*/React__default["default"].createElement(React__default["default"].Fragment, null, this.props.children, content);
|
||
|
|
} else {
|
||
|
|
var isBoth = this.isBoth();
|
||
|
|
var isHorizontal = this.isHorizontal();
|
||
|
|
var className = utils.classNames('p-virtualscroller', {
|
||
|
|
'p-both-scroll': isBoth,
|
||
|
|
'p-horizontal-scroll': isHorizontal
|
||
|
|
}, this.props.className);
|
||
|
|
var loader = this.renderLoader();
|
||
|
|
|
||
|
|
var _content = this.renderContent();
|
||
|
|
|
||
|
|
var spacer = this.renderSpacer();
|
||
|
|
return /*#__PURE__*/React__default["default"].createElement("div", {
|
||
|
|
ref: function ref(el) {
|
||
|
|
return _this17.el = el;
|
||
|
|
},
|
||
|
|
className: className,
|
||
|
|
tabIndex: 0,
|
||
|
|
style: this.props.style,
|
||
|
|
onScroll: this.onScroll
|
||
|
|
}, _content, spacer, loader);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}]);
|
||
|
|
|
||
|
|
return VirtualScroller;
|
||
|
|
}(React.Component);
|
||
|
|
|
||
|
|
_defineProperty(VirtualScroller, "defaultProps", {
|
||
|
|
id: null,
|
||
|
|
style: null,
|
||
|
|
className: null,
|
||
|
|
items: null,
|
||
|
|
itemSize: 0,
|
||
|
|
scrollHeight: null,
|
||
|
|
scrollWidth: null,
|
||
|
|
orientation: 'vertical',
|
||
|
|
numToleratedItems: null,
|
||
|
|
delay: 0,
|
||
|
|
lazy: false,
|
||
|
|
disabled: false,
|
||
|
|
loaderDisabled: false,
|
||
|
|
columns: null,
|
||
|
|
loading: false,
|
||
|
|
showSpacer: true,
|
||
|
|
showLoader: false,
|
||
|
|
loadingTemplate: null,
|
||
|
|
itemTemplate: null,
|
||
|
|
contentTemplate: null,
|
||
|
|
onScroll: null,
|
||
|
|
onScrollIndexChange: null,
|
||
|
|
onLazyLoad: null
|
||
|
|
});
|
||
|
|
|
||
|
|
exports.VirtualScroller = VirtualScroller;
|