| /* |
| * |
| * 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. |
| * |
| */ |
| |
| var config; |
| |
| function Config(xhr) { |
| function loadPreferences(xhr) { |
| var parser = new DOMParser(); |
| var doc = parser.parseFromString(xhr.responseText, "application/xml"); |
| |
| var preferences = doc.getElementsByTagName("preference"); |
| return Array.prototype.slice.call(preferences); |
| } |
| |
| this.xhr = xhr; |
| this.preferences = loadPreferences(this.xhr); |
| } |
| |
| function readConfig(success, error) { |
| var xhr; |
| |
| if(typeof config != 'undefined') { |
| success(config); |
| } |
| |
| function fail(msg) { |
| console.error(msg); |
| |
| if(error) { |
| error(msg); |
| } |
| } |
| |
| var xhrStatusChangeHandler = function() { |
| if (xhr.readyState == 4) { |
| if (xhr.status == 200 || xhr.status == 304 || xhr.status === 0 /* file:// */) { |
| config = new Config(xhr); |
| success(config); |
| } |
| else { |
| fail('[Browser][cordova.js][xhrStatusChangeHandler] Could not XHR config.xml: ' + xhr.statusText); |
| } |
| } |
| }; |
| |
| xhr = new XMLHttpRequest(); |
| xhr.addEventListener("load", xhrStatusChangeHandler); |
| |
| |
| try { |
| xhr.open("get", "/config.xml", true); |
| xhr.send(); |
| } catch(e) { |
| fail('[Browser][cordova.js][readConfig] Could not XHR config.xml: ' + JSON.stringify(e)); |
| } |
| } |
| |
| /** |
| * Reads a preference value from config.xml. |
| * Returns preference value or undefined if it does not exist. |
| * @param {String} preferenceName Preference name to read */ |
| Config.prototype.getPreferenceValue = function getPreferenceValue(preferenceName) { |
| var preferenceItem = this.preferences && this.preferences.filter(function(item) { |
| return item.attributes.name && item.attributes.name.value === preferenceName; |
| }); |
| |
| if(preferenceItem && preferenceItem[0] && preferenceItem[0].attributes && preferenceItem[0].attributes.value) { |
| return preferenceItem[0].attributes.value.value; |
| } |
| }; |
| |
| exports.readConfig = readConfig; |