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xorigin.js
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xorigin.js
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/*
* Copyright (c) 2013 Adobe Systems Incorporated. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*/
/*jslint vars: true, plusplus: true, devel: true, nomen: true, indent: 4, maxerr: 50 */
/*global brackets: true, navigator:true, document:true, window:true */
(function () {
"use strict";
// Function to test whether a given error represents an illegal cross origin access
var testCrossOriginError;
if (navigator.userAgent.search(" Chrome/") !== -1) {
// Chrome support
testCrossOriginError = function (message, url, line) {
return url === "" && line === 0 && message === "Script error.";
};
} else if (navigator.userAgent.slice(0, 6) === 'Opera/') {
// Opera support
testCrossOriginError = function (message, url, line) {
return message === "Uncaught exception: DOMException: NETWORK_ERR";
};
}
// Abort if running in the shell, running on a server or not running in a supported and affected browser
if (typeof (brackets) !== "undefined" ||
document.location.href.substr(0, 7) !== "file://" ||
!testCrossOriginError) {
return;
}
// Remember the current error handler to restore it once we're done
var previousErrorHandler = window.onerror;
// Our error handler
function handleError(message, url, line) {
// Ignore this error if it does not look like the rather vague cross origin error in Chrome
// Chrome will print it to the console anyway
if (!testCrossOriginError(message, url, line)) {
if (previousErrorHandler) {
return previousErrorHandler(message, url, line);
}
return;
}
// Show an error message
alert("Oops! This application doesn't run in browsers yet.\n\nIt is built in HTML, but right now it runs as a desktop app so you can use it to edit local files. Please use the application shell in the following repo to run this application:\n\ngithub.com/adobe/brackets-shell");
// Restore the original handler for later errors
window.onerror = previousErrorHandler;
}
// Install our error handler
window.onerror = handleError;
}());