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libtdevnc/webclients/novnc/app/error-handler.js

57 lines
2.0 KiB

// NB: this should *not* be included as a module until we have
// native support in the browsers, so that our error handler
// can catch script-loading errors.
(function(){
"use strict";
// Fallback for all uncought errors
function handleError (event, err) {
try {
var msg = document.getElementById('noVNC_fallback_errormsg');
// Only show the initial error
if (msg.hasChildNodes()) {
return false;
}
var div = document.createElement("div");
div.classList.add('noVNC_message');
div.appendChild(document.createTextNode(event.message));
msg.appendChild(div);
if (event.filename) {
div = document.createElement("div");
div.className = 'noVNC_location';
var text = event.filename;
if (event.lineno !== undefined) {
text += ":" + event.lineno;
if (event.colno !== undefined) {
text += ":" + event.colno;
}
}
div.appendChild(document.createTextNode(text));
msg.appendChild(div);
}
if (err && (err.stack !== undefined)) {
div = document.createElement("div");
div.className = 'noVNC_stack';
div.appendChild(document.createTextNode(err.stack));
msg.appendChild(div);
}
document.getElementById('noVNC_fallback_error')
.classList.add("noVNC_open");
} catch (exc) {
document.write("noVNC encountered an error.");
}
// Don't return true since this would prevent the error
// from being printed to the browser console.
return false;
}
window.addEventListener('error', function (evt) { handleError(evt, evt.error); });
window.addEventListener('unhandledrejection', function (evt) { handleError(evt.reason, evt.reason); });
})();