/*
* Copyright 2015-2017 WorldWind Contributors
*
* Licensed 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.
*/
// It simply adds XmlParser, which encapsulates the fact that, there are different implementations
define([
'../error/ArgumentError',
'../util/Logger'
],
function(
ArgumentError,
Logger
){
/**
* Constructor function responsible for abstracting away the complexities in parsing XmlDocuments.
* @param document String representation of the xml document.
* @constructor
*/
var XmlDocument = function(document) {
/**
* Retrieved textual representation of the document.
*/
this._document = document;
};
/**
* This method abstracts parsing of XmlDocument away form users of this class. It should work in all browsers
* since IE5
* @returns {Document} Parsed dom.
*/
XmlDocument.prototype.dom = function() {
if(DOMParser) {
var parser = new DOMParser();
var parsedDocument = parser.parseFromString(this._document, "text/xml");
if(parsedDocument.getElementsByTagName("parsererror").length || !parsedDocument) {
throw new ArgumentError(
Logger.logMessage(Logger.LEVEL_SEVERE, "XmlDocument", "dom", "Invalid XML document. " +
parsedDocument.getElementsByTagName("parsererror")[0].innerHTML)
);
}
return parsedDocument;
} else {
// Support for IE6
var xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async=false;
xmlDoc.loadXML(text);
return xmlDoc;
}
};
XmlDocument.isValid = function(document) {
// TODO refactor.
try {
new XmlDocument(document).dom();
return true;
} catch(e) {
return false;
}
};
return XmlDocument;
});