482 lines
22 KiB
JavaScript
482 lines
22 KiB
JavaScript
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"use strict";
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = function (d, b) {
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extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
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return extendStatics(d, b);
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};
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return function (d, b) {
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if (typeof b !== "function" && b !== null)
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throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
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extendStatics(d, b);
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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})();
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var __assign = (this && this.__assign) || function () {
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__assign = Object.assign || function(t) {
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for (var s, i = 1, n = arguments.length; i < n; i++) {
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s = arguments[i];
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for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
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t[p] = s[p];
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}
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return t;
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};
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return __assign.apply(this, arguments);
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};
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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return new (P || (P = Promise))(function (resolve, reject) {
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function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
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function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
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function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
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step((generator = generator.apply(thisArg, _arguments || [])).next());
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});
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};
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var __generator = (this && this.__generator) || function (thisArg, body) {
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var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
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return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
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function verb(n) { return function (v) { return step([n, v]); }; }
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function step(op) {
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if (f) throw new TypeError("Generator is already executing.");
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while (_) try {
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if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
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if (y = 0, t) op = [op[0] & 2, t.value];
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switch (op[0]) {
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case 0: case 1: t = op; break;
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case 4: _.label++; return { value: op[1], done: false };
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case 5: _.label++; y = op[1]; op = [0]; continue;
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case 7: op = _.ops.pop(); _.trys.pop(); continue;
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default:
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if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
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if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
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if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
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if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
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if (t[2]) _.ops.pop();
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_.trys.pop(); continue;
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}
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op = body.call(thisArg, _);
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} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
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if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
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}
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};
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var __read = (this && this.__read) || function (o, n) {
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var m = typeof Symbol === "function" && o[Symbol.iterator];
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if (!m) return o;
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var i = m.call(o), r, ar = [], e;
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try {
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while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
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}
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catch (error) { e = { error: error }; }
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finally {
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try {
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if (r && !r.done && (m = i["return"])) m.call(i);
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}
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finally { if (e) throw e.error; }
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}
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return ar;
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};
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var __spreadArray = (this && this.__spreadArray) || function (to, from, pack) {
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if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
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if (ar || !(i in from)) {
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if (!ar) ar = Array.prototype.slice.call(from, 0, i);
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ar[i] = from[i];
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}
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}
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return to.concat(ar || Array.prototype.slice.call(from));
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};
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var __values = (this && this.__values) || function(o) {
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var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0;
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if (m) return m.call(o);
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if (o && typeof o.length === "number") return {
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next: function () {
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if (o && i >= o.length) o = void 0;
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return { value: o && o[i++], done: !o };
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}
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};
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throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.LazyHandler = exports.LazyMathDocumentMixin = exports.LazyMathItemMixin = exports.LAZYID = exports.LazyList = void 0;
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var MathItem_js_1 = require("../../core/MathItem.js");
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var Retries_js_1 = require("../../util/Retries.js");
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var LazyList = (function () {
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function LazyList() {
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this.id = 0;
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this.items = new Map();
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}
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LazyList.prototype.add = function (math) {
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var id = String(this.id++);
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this.items.set(id, math);
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return id;
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};
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LazyList.prototype.get = function (id) {
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return this.items.get(id);
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};
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LazyList.prototype.delete = function (id) {
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return this.items.delete(id);
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};
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return LazyList;
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}());
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exports.LazyList = LazyList;
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(0, MathItem_js_1.newState)('LAZYALWAYS', MathItem_js_1.STATE.FINDMATH + 3);
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exports.LAZYID = 'data-mjx-lazy';
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function LazyMathItemMixin(BaseMathItem) {
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return (function (_super) {
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__extends(class_1, _super);
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function class_1() {
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var args = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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args[_i] = arguments[_i];
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}
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var _this = _super.apply(this, __spreadArray([], __read(args), false)) || this;
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_this.lazyCompile = true;
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_this.lazyTypeset = true;
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_this.lazyTex = false;
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if (!_this.end.node) {
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_this.lazyCompile = _this.lazyTypeset = false;
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}
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return _this;
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}
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class_1.prototype.compile = function (document) {
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if (!this.lazyCompile) {
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_super.prototype.compile.call(this, document);
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return;
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}
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if (this.state() < MathItem_js_1.STATE.COMPILED) {
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this.lazyTex = (this.inputJax.name === 'TeX');
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this.root = document.mmlFactory.create('math');
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this.state(MathItem_js_1.STATE.COMPILED);
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}
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};
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class_1.prototype.state = function (state, restore) {
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if (state === void 0) { state = null; }
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if (restore === void 0) { restore = false; }
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if (restore !== null)
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_super.prototype.state.call(this, state, restore);
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return _super.prototype.state.call(this);
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};
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class_1.prototype.typeset = function (document) {
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var _a;
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if (!this.lazyTypeset) {
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_super.prototype.typeset.call(this, document);
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return;
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}
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if (this.state() < MathItem_js_1.STATE.TYPESET) {
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var adaptor = document.adaptor;
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if (!this.lazyMarker) {
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var id = document.lazyList.add(this);
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this.lazyMarker = adaptor.node('mjx-lazy', (_a = {}, _a[exports.LAZYID] = id, _a));
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this.typesetRoot = adaptor.node('mjx-container', {}, [this.lazyMarker]);
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}
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this.state(MathItem_js_1.STATE.TYPESET);
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}
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};
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class_1.prototype.updateDocument = function (document) {
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_super.prototype.updateDocument.call(this, document);
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if (this.lazyTypeset) {
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document.lazyObserver.observe(this.lazyMarker);
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}
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};
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return class_1;
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}(BaseMathItem));
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}
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exports.LazyMathItemMixin = LazyMathItemMixin;
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function LazyMathDocumentMixin(BaseDocument) {
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var _a;
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return _a = (function (_super) {
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__extends(BaseClass, _super);
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function BaseClass() {
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var args = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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args[_i] = arguments[_i];
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}
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var _this = _super.apply(this, __spreadArray([], __read(args), false)) || this;
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_this.lazyAlwaysContainers = null;
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_this.lazyAlwaysIndex = 0;
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_this.lazyPromise = Promise.resolve();
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_this.lazyIdle = false;
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_this.lazySet = new Set();
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_this.options.MathItem =
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LazyMathItemMixin(_this.options.MathItem);
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var ProcessBits = _this.constructor.ProcessBits;
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!ProcessBits.has('lazyAlways') && ProcessBits.allocate('lazyAlways');
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_this.lazyObserver = new IntersectionObserver(_this.lazyObserve.bind(_this), { rootMargin: _this.options.lazyMargin });
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_this.lazyList = new LazyList();
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var callback = _this.lazyHandleSet.bind(_this);
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_this.lazyProcessSet = (window && window.requestIdleCallback ?
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function () { return window.requestIdleCallback(callback); } :
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function () { return setTimeout(callback, 10); });
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if (window) {
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var done_1 = false;
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var handler = function () {
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!done_1 && _this.lazyTypesetAll();
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done_1 = true;
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};
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window.matchMedia('print').addListener(handler);
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window.addEventListener('beforeprint', handler);
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}
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return _this;
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}
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BaseClass.prototype.lazyAlways = function () {
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var e_1, _a;
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if (!this.lazyAlwaysContainers || this.processed.isSet('lazyAlways'))
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return;
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try {
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for (var _b = __values(this.math), _c = _b.next(); !_c.done; _c = _b.next()) {
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var item = _c.value;
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var math = item;
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if (math.lazyTypeset && this.lazyIsAlways(math)) {
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math.lazyCompile = math.lazyTypeset = false;
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}
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}
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}
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catch (e_1_1) { e_1 = { error: e_1_1 }; }
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finally {
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try {
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if (_c && !_c.done && (_a = _b.return)) _a.call(_b);
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}
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finally { if (e_1) throw e_1.error; }
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}
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this.processed.set('lazyAlways');
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};
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BaseClass.prototype.lazyIsAlways = function (math) {
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if (math.state() < MathItem_js_1.STATE.LAZYALWAYS) {
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math.state(MathItem_js_1.STATE.LAZYALWAYS);
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var node = math.start.node;
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var adaptor = this.adaptor;
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var start = this.lazyAlwaysIndex;
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var end = this.lazyAlwaysContainers.length;
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do {
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var container = this.lazyAlwaysContainers[this.lazyAlwaysIndex];
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if (adaptor.contains(container, node))
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return true;
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if (++this.lazyAlwaysIndex >= end) {
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this.lazyAlwaysIndex = 0;
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}
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} while (this.lazyAlwaysIndex !== start);
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}
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return false;
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};
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BaseClass.prototype.state = function (state, restore) {
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if (restore === void 0) { restore = false; }
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_super.prototype.state.call(this, state, restore);
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if (state < MathItem_js_1.STATE.LAZYALWAYS) {
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this.processed.clear('lazyAlways');
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}
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return this;
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};
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BaseClass.prototype.lazyTypesetAll = function () {
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return __awaiter(this, void 0, void 0, function () {
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var state, _a, _b, item, math, fontCache;
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var e_2, _c;
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var _this = this;
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return __generator(this, function (_d) {
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state = MathItem_js_1.STATE.LAST;
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try {
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for (_a = __values(this.math), _b = _a.next(); !_b.done; _b = _a.next()) {
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item = _b.value;
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math = item;
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if (!math.lazyCompile && !math.lazyTypeset)
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continue;
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if (math.lazyCompile) {
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math.state(MathItem_js_1.STATE.COMPILED - 1);
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state = MathItem_js_1.STATE.COMPILED;
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}
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else {
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math.state(MathItem_js_1.STATE.TYPESET - 1);
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if (MathItem_js_1.STATE.TYPESET < state)
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state = MathItem_js_1.STATE.TYPESET;
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}
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math.lazyCompile = math.lazyTypeset = false;
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math.lazyMarker && this.lazyObserver.unobserve(math.lazyMarker);
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}
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}
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catch (e_2_1) { e_2 = { error: e_2_1 }; }
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finally {
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try {
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if (_b && !_b.done && (_c = _a.return)) _c.call(_a);
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}
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finally { if (e_2) throw e_2.error; }
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}
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if (state === MathItem_js_1.STATE.LAST)
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return [2, Promise.resolve()];
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this.state(state - 1, null);
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fontCache = this.outputJax.options.fontCache;
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if (fontCache)
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this.outputJax.options.fontCache = 'none';
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this.reset();
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return [2, (0, Retries_js_1.handleRetriesFor)(function () { return _this.render(); }).then(function () {
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if (fontCache)
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_this.outputJax.options.fontCache = fontCache;
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})];
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});
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});
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};
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BaseClass.prototype.lazyObserve = function (entries) {
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var e_3, _a;
|
||
|
|
try {
|
||
|
|
for (var entries_1 = __values(entries), entries_1_1 = entries_1.next(); !entries_1_1.done; entries_1_1 = entries_1.next()) {
|
||
|
|
var entry = entries_1_1.value;
|
||
|
|
var id = this.adaptor.getAttribute(entry.target, exports.LAZYID);
|
||
|
|
var math = this.lazyList.get(id);
|
||
|
|
if (!math)
|
||
|
|
continue;
|
||
|
|
if (!entry.isIntersecting) {
|
||
|
|
this.lazySet.delete(id);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
this.lazySet.add(id);
|
||
|
|
if (!this.lazyIdle) {
|
||
|
|
this.lazyIdle = true;
|
||
|
|
this.lazyProcessSet();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
catch (e_3_1) { e_3 = { error: e_3_1 }; }
|
||
|
|
finally {
|
||
|
|
try {
|
||
|
|
if (entries_1_1 && !entries_1_1.done && (_a = entries_1.return)) _a.call(entries_1);
|
||
|
|
}
|
||
|
|
finally { if (e_3) throw e_3.error; }
|
||
|
|
}
|
||
|
|
};
|
||
|
|
BaseClass.prototype.lazyHandleSet = function () {
|
||
|
|
var _this = this;
|
||
|
|
var set = this.lazySet;
|
||
|
|
this.lazySet = new Set();
|
||
|
|
this.lazyPromise = this.lazyPromise.then(function () {
|
||
|
|
var state = _this.compileEarlierItems(set) ? MathItem_js_1.STATE.COMPILED : MathItem_js_1.STATE.TYPESET;
|
||
|
|
state = _this.resetStates(set, state);
|
||
|
|
_this.state(state - 1, null);
|
||
|
|
return (0, Retries_js_1.handleRetriesFor)(function () {
|
||
|
|
_this.render();
|
||
|
|
_this.lazyIdle = false;
|
||
|
|
});
|
||
|
|
});
|
||
|
|
};
|
||
|
|
BaseClass.prototype.resetStates = function (set, state) {
|
||
|
|
var e_4, _a;
|
||
|
|
try {
|
||
|
|
for (var _b = __values(set.values()), _c = _b.next(); !_c.done; _c = _b.next()) {
|
||
|
|
var id = _c.value;
|
||
|
|
var math = this.lazyList.get(id);
|
||
|
|
if (math.lazyCompile) {
|
||
|
|
math.state(MathItem_js_1.STATE.COMPILED - 1);
|
||
|
|
state = MathItem_js_1.STATE.COMPILED;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
math.state(MathItem_js_1.STATE.TYPESET - 1);
|
||
|
|
}
|
||
|
|
math.lazyCompile = math.lazyTypeset = false;
|
||
|
|
math.lazyMarker && this.lazyObserver.unobserve(math.lazyMarker);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
catch (e_4_1) { e_4 = { error: e_4_1 }; }
|
||
|
|
finally {
|
||
|
|
try {
|
||
|
|
if (_c && !_c.done && (_a = _b.return)) _a.call(_b);
|
||
|
|
}
|
||
|
|
finally { if (e_4) throw e_4.error; }
|
||
|
|
}
|
||
|
|
return state;
|
||
|
|
};
|
||
|
|
BaseClass.prototype.compileEarlierItems = function (set) {
|
||
|
|
var e_5, _a;
|
||
|
|
var math = this.earliestTex(set);
|
||
|
|
if (!math)
|
||
|
|
return false;
|
||
|
|
var compile = false;
|
||
|
|
try {
|
||
|
|
for (var _b = __values(this.math), _c = _b.next(); !_c.done; _c = _b.next()) {
|
||
|
|
var item = _c.value;
|
||
|
|
var earlier = item;
|
||
|
|
if (earlier === math || !(earlier === null || earlier === void 0 ? void 0 : earlier.lazyCompile) || !earlier.lazyTex) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
earlier.lazyCompile = false;
|
||
|
|
earlier.lazyMarker && this.lazyObserver.unobserve(earlier.lazyMarker);
|
||
|
|
earlier.state(MathItem_js_1.STATE.COMPILED - 1);
|
||
|
|
compile = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
catch (e_5_1) { e_5 = { error: e_5_1 }; }
|
||
|
|
finally {
|
||
|
|
try {
|
||
|
|
if (_c && !_c.done && (_a = _b.return)) _a.call(_b);
|
||
|
|
}
|
||
|
|
finally { if (e_5) throw e_5.error; }
|
||
|
|
}
|
||
|
|
return compile;
|
||
|
|
};
|
||
|
|
BaseClass.prototype.earliestTex = function (set) {
|
||
|
|
var e_6, _a;
|
||
|
|
var min = null;
|
||
|
|
var minMath = null;
|
||
|
|
try {
|
||
|
|
for (var _b = __values(set.values()), _c = _b.next(); !_c.done; _c = _b.next()) {
|
||
|
|
var id = _c.value;
|
||
|
|
var math = this.lazyList.get(id);
|
||
|
|
if (!math.lazyTex)
|
||
|
|
continue;
|
||
|
|
if (min === null || parseInt(id) < min) {
|
||
|
|
min = parseInt(id);
|
||
|
|
minMath = math;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
catch (e_6_1) { e_6 = { error: e_6_1 }; }
|
||
|
|
finally {
|
||
|
|
try {
|
||
|
|
if (_c && !_c.done && (_a = _b.return)) _a.call(_b);
|
||
|
|
}
|
||
|
|
finally { if (e_6) throw e_6.error; }
|
||
|
|
}
|
||
|
|
return minMath;
|
||
|
|
};
|
||
|
|
BaseClass.prototype.clearMathItemsWithin = function (containers) {
|
||
|
|
var e_7, _a;
|
||
|
|
var items = _super.prototype.clearMathItemsWithin.call(this, containers);
|
||
|
|
try {
|
||
|
|
for (var items_1 = __values(items), items_1_1 = items_1.next(); !items_1_1.done; items_1_1 = items_1.next()) {
|
||
|
|
var math = items_1_1.value;
|
||
|
|
var marker = math.lazyMarker;
|
||
|
|
if (marker) {
|
||
|
|
this.lazyObserver.unobserve(marker);
|
||
|
|
this.lazyList.delete(this.adaptor.getAttribute(marker, exports.LAZYID));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
catch (e_7_1) { e_7 = { error: e_7_1 }; }
|
||
|
|
finally {
|
||
|
|
try {
|
||
|
|
if (items_1_1 && !items_1_1.done && (_a = items_1.return)) _a.call(items_1);
|
||
|
|
}
|
||
|
|
finally { if (e_7) throw e_7.error; }
|
||
|
|
}
|
||
|
|
return items;
|
||
|
|
};
|
||
|
|
BaseClass.prototype.render = function () {
|
||
|
|
var always = this.options.lazyAlwaysTypeset;
|
||
|
|
this.lazyAlwaysContainers = !always ? null :
|
||
|
|
this.adaptor.getElements(Array.isArray(always) ? always : [always], this.document);
|
||
|
|
this.lazyAlwaysIndex = 0;
|
||
|
|
_super.prototype.render.call(this);
|
||
|
|
return this;
|
||
|
|
};
|
||
|
|
return BaseClass;
|
||
|
|
}(BaseDocument)),
|
||
|
|
_a.OPTIONS = __assign(__assign({}, BaseDocument.OPTIONS), { lazyMargin: '200px', lazyAlwaysTypeset: null, renderActions: __assign(__assign({}, BaseDocument.OPTIONS.renderActions), { lazyAlways: [MathItem_js_1.STATE.LAZYALWAYS, 'lazyAlways', '', false] }) }),
|
||
|
|
_a;
|
||
|
|
}
|
||
|
|
exports.LazyMathDocumentMixin = LazyMathDocumentMixin;
|
||
|
|
function LazyHandler(handler) {
|
||
|
|
if (typeof IntersectionObserver !== 'undefined') {
|
||
|
|
handler.documentClass =
|
||
|
|
LazyMathDocumentMixin(handler.documentClass);
|
||
|
|
}
|
||
|
|
return handler;
|
||
|
|
}
|
||
|
|
exports.LazyHandler = LazyHandler;
|
||
|
|
//# sourceMappingURL=LazyHandler.js.map
|