198 lines
9.7 KiB
JavaScript
198 lines
9.7 KiB
JavaScript
"use strict";
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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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Object.defineProperty(exports, "__esModule", { value: true });
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exports.Cache = exports.CacheStorage = void 0;
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var features_1 = require("./features");
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var CacheStorage = /** @class */ (function () {
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function CacheStorage() {
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}
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CacheStorage.getOrigin = function (url) {
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var link = CacheStorage._link;
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if (!link) {
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return 'about:blank';
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}
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link.href = url;
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link.href = link.href; // IE9, LOL! - http://jsfiddle.net/niklasvh/2e48b/
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return link.protocol + link.hostname + link.port;
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};
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CacheStorage.isSameOrigin = function (src) {
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return CacheStorage.getOrigin(src) === CacheStorage._origin;
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};
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CacheStorage.setContext = function (window) {
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CacheStorage._link = window.document.createElement('a');
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CacheStorage._origin = CacheStorage.getOrigin(window.location.href);
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};
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CacheStorage._origin = 'about:blank';
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return CacheStorage;
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}());
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exports.CacheStorage = CacheStorage;
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var Cache = /** @class */ (function () {
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function Cache(context, _options) {
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this.context = context;
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this._options = _options;
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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this._cache = {};
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}
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Cache.prototype.addImage = function (src) {
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var result = Promise.resolve();
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if (this.has(src)) {
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return result;
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}
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if (isBlobImage(src) || isRenderable(src)) {
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(this._cache[src] = this.loadImage(src)).catch(function () {
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// prevent unhandled rejection
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});
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return result;
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}
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return result;
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};
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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Cache.prototype.match = function (src) {
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return this._cache[src];
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};
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Cache.prototype.loadImage = function (key) {
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return __awaiter(this, void 0, void 0, function () {
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var isSameOrigin, useCORS, useProxy, src;
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var _this = this;
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return __generator(this, function (_a) {
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switch (_a.label) {
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case 0:
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isSameOrigin = CacheStorage.isSameOrigin(key);
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useCORS = !isInlineImage(key) && this._options.useCORS === true && features_1.FEATURES.SUPPORT_CORS_IMAGES && !isSameOrigin;
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useProxy = !isInlineImage(key) &&
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!isSameOrigin &&
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!isBlobImage(key) &&
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typeof this._options.proxy === 'string' &&
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features_1.FEATURES.SUPPORT_CORS_XHR &&
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!useCORS;
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if (!isSameOrigin &&
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this._options.allowTaint === false &&
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!isInlineImage(key) &&
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!isBlobImage(key) &&
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!useProxy &&
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!useCORS) {
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return [2 /*return*/];
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}
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src = key;
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if (!useProxy) return [3 /*break*/, 2];
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return [4 /*yield*/, this.proxy(src)];
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case 1:
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src = _a.sent();
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_a.label = 2;
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case 2:
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this.context.logger.debug("Added image " + key.substring(0, 256));
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return [4 /*yield*/, new Promise(function (resolve, reject) {
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var img = new Image();
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img.onload = function () { return resolve(img); };
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img.onerror = reject;
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//ios safari 10.3 taints canvas with data urls unless crossOrigin is set to anonymous
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if (isInlineBase64Image(src) || useCORS) {
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img.crossOrigin = 'anonymous';
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}
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img.src = src;
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if (img.complete === true) {
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// Inline XML images may fail to parse, throwing an Error later on
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setTimeout(function () { return resolve(img); }, 500);
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}
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if (_this._options.imageTimeout > 0) {
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setTimeout(function () { return reject("Timed out (" + _this._options.imageTimeout + "ms) loading image"); }, _this._options.imageTimeout);
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}
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})];
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case 3: return [2 /*return*/, _a.sent()];
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}
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});
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});
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};
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Cache.prototype.has = function (key) {
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return typeof this._cache[key] !== 'undefined';
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};
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Cache.prototype.keys = function () {
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return Promise.resolve(Object.keys(this._cache));
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};
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Cache.prototype.proxy = function (src) {
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var _this = this;
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var proxy = this._options.proxy;
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if (!proxy) {
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throw new Error('No proxy defined');
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}
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var key = src.substring(0, 256);
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return new Promise(function (resolve, reject) {
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var responseType = features_1.FEATURES.SUPPORT_RESPONSE_TYPE ? 'blob' : 'text';
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var xhr = new XMLHttpRequest();
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xhr.onload = function () {
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if (xhr.status === 200) {
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if (responseType === 'text') {
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resolve(xhr.response);
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}
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else {
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var reader_1 = new FileReader();
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reader_1.addEventListener('load', function () { return resolve(reader_1.result); }, false);
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reader_1.addEventListener('error', function (e) { return reject(e); }, false);
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reader_1.readAsDataURL(xhr.response);
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}
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}
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else {
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reject("Failed to proxy resource " + key + " with status code " + xhr.status);
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}
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};
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xhr.onerror = reject;
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var queryString = proxy.indexOf('?') > -1 ? '&' : '?';
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xhr.open('GET', "" + proxy + queryString + "url=" + encodeURIComponent(src) + "&responseType=" + responseType);
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if (responseType !== 'text' && xhr instanceof XMLHttpRequest) {
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xhr.responseType = responseType;
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}
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if (_this._options.imageTimeout) {
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var timeout_1 = _this._options.imageTimeout;
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xhr.timeout = timeout_1;
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xhr.ontimeout = function () { return reject("Timed out (" + timeout_1 + "ms) proxying " + key); };
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}
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xhr.send();
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});
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};
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return Cache;
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}());
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exports.Cache = Cache;
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var INLINE_SVG = /^data:image\/svg\+xml/i;
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var INLINE_BASE64 = /^data:image\/.*;base64,/i;
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var INLINE_IMG = /^data:image\/.*/i;
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var isRenderable = function (src) { return features_1.FEATURES.SUPPORT_SVG_DRAWING || !isSVG(src); };
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var isInlineImage = function (src) { return INLINE_IMG.test(src); };
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var isInlineBase64Image = function (src) { return INLINE_BASE64.test(src); };
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var isBlobImage = function (src) { return src.substr(0, 4) === 'blob'; };
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var isSVG = function (src) { return src.substr(-3).toLowerCase() === 'svg' || INLINE_SVG.test(src); };
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//# sourceMappingURL=cache-storage.js.map
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