| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| /* global XMLHttpRequest */ |
| |
| 'use strict' |
| |
| function loadByXHR (config, callback) { |
| if (!config.source) { |
| callback(new Error('xhr loader: missing config.source.')) |
| } |
| const xhr = new XMLHttpRequest() |
| xhr.open('GET', config.source) |
| xhr.onload = function () { |
| callback(null, this.responseText) |
| } |
| xhr.onerror = function (error) { |
| callback(error) |
| } |
| xhr.send() |
| } |
| |
| function loadByJsonp (config, callback) { |
| if (!config.source) { |
| callback(new Error('jsonp loader: missing config.source.')) |
| } |
| const callbackName = config.jsonpCallback || 'weexJsonpCallback' |
| window[callbackName] = function (code) { |
| if (code) { |
| callback(null, code) |
| } |
| else { |
| callback(new Error('load by jsonp error')) |
| } |
| } |
| const script = document.createElement('script') |
| script.src = decodeURIComponent(config.source) |
| script.type = 'text/javascript' |
| document.body.appendChild(script) |
| } |
| |
| function loadBySourceCode (config, callback) { |
| // src is the jsbundle. |
| // no need to fetch from anywhere. |
| if (config.source) { |
| callback(null, config.source) |
| } |
| else { |
| callback(new Error('source code laoder: missing config.source.')) |
| } |
| } |
| |
| const callbackMap = { |
| xhr: loadByXHR, |
| jsonp: loadByJsonp, |
| source: loadBySourceCode |
| } |
| |
| export function load (options, callback) { |
| const loadFn = callbackMap[options.loader] |
| loadFn(options, callback) |
| } |
| |
| export function registerLoader (name, loaderFunc) { |
| if (typeof loaderFunc === 'function') { |
| callbackMap[name] = loaderFunc |
| } |
| } |