94 lines
2.7 KiB
JavaScript
94 lines
2.7 KiB
JavaScript
/*
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* Copyright [2015] [wisemapping]
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*
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* Licensed under WiseMapping Public License, Version 1.0 (the "License").
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* It is basically the Apache License, Version 2.0 (the "License") plus the
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* "powered by wisemapping" text requirement on every single page;
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the license at
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*
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* http://www.wisemapping.org/license
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* Cross-browser implementation of creating an XML document object.
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*/
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export const createDocument = function () {
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var doc = null;
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if ($defined(window.ActiveXObject)) {
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//http://blogs.msdn.com/b/xmlteam/archive/2006/10/23/using-the-right-version-of-msxml-in-internet-explorer.aspx
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var progIDs = ['Msxml2.DOMDocument.6.0', 'Msxml2.DOMDocument.3.0'];
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for (var i = 0; i < progIDs.length; i++) {
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try {
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doc = new ActiveXObject(progIDs[i]);
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break;
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} catch (ex) {}
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}
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} else if (window.document.implementation && window.document.implementation.createDocument) {
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doc = window.document.implementation.createDocument('', '', null);
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}
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$assert(doc, 'Parser could not be instantiated');
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return doc;
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};
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/*
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Function: $defined
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Returns true if the passed in value/object is defined, that means is not null or undefined.
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Arguments:
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obj - object to inspect
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*/
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export const $defined = function (obj) {
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return obj != undefined;
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};
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export const $assert = function (assert, message) {
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if (!$defined(assert) || !assert) {
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logStackTrace();
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console.log(message);
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throw new Error(message);
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}
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};
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export const sign = function (value) {
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return value >= 0 ? 1 : -1;
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};
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export function logStackTrace(exception) {
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if (!$defined(exception)) {
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try {
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throw Error('Unexpected Exception');
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} catch (e) {
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exception = e;
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}
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}
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var result = '';
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if (exception.stack) {
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//Firefox and Chrome...
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result = exception.stack;
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} else if (window.opera && exception.message) {
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//Opera
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result = exception.message;
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} else {
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//IE and Safari
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result = exception.sourceURL + ': ' + exception.line + '\n\n';
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var currentFunction = arguments.callee.caller;
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while (currentFunction) {
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var fn = currentFunction.toString();
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result = result + '\n' + fn;
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currentFunction = currentFunction.caller;
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}
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}
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window.errorStack = result;
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return result;
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}
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