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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// Set up Custom Elements for XUL and XHTML documents before anything else
// happens. Anything loaded here should be considered part of core XUL functionality.
// Any window-specific elements can be registered via <script> tags at the
// top of individual documents.
Services.obs.addObserver(
{
observe(doc) {
if (
doc.nodePrincipal.isSystemPrincipal &&
(doc.contentType == "application/xhtml+xml" ||
doc.contentType == "text/html") &&
// People shouldn't be using our built-in custom elements in
// system-principal about:blank anyway, and trying to support that
// causes responsiveness regressions. So let's not support it.
doc.URL != "about:blank"
) {
Services.scriptloader.loadSubScript(
"chrome://global/content/customElements.js",
doc.ownerGlobal
);
}
},
},
"document-element-inserted"
);
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