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/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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
* The origin of this IDL file is
enum CSSStyleSheetParsingMode {
dictionary CSSStyleSheetInit {
(MediaList or UTF8String) media = "";
boolean disabled = false;
UTF8String baseURL;
interface CSSStyleSheet : StyleSheet {
[Throws, Pref="layout.css.constructable-stylesheets.enabled"]
constructor(optional CSSStyleSheetInit options = {});
[Pure, BinaryName="DOMOwnerRule"]
readonly attribute CSSRule? ownerRule;
[Throws, NeedsSubjectPrincipal]
readonly attribute CSSRuleList cssRules;
[ChromeOnly, BinaryName="parsingModeDOM"]
readonly attribute CSSStyleSheetParsingMode parsingMode;
[Throws, NeedsSubjectPrincipal]
unsigned long insertRule(UTF8String rule, optional unsigned long index = 0);
[Throws, NeedsSubjectPrincipal]
void deleteRule(unsigned long index);
[NewObject, Pref="layout.css.constructable-stylesheets.enabled"]
Promise<CSSStyleSheet> replace(UTF8String text);
[Throws, Pref="layout.css.constructable-stylesheets.enabled"]
void replaceSync(UTF8String text);
// Non-standard WebKit things.
[Throws, NeedsSubjectPrincipal, BinaryName="cssRules"]
readonly attribute CSSRuleList rules;
[Throws, NeedsSubjectPrincipal, BinaryName="deleteRule"]
void removeRule(optional unsigned long index = 0);
[Throws, NeedsSubjectPrincipal]
long addRule(optional UTF8String selector = "undefined", optional UTF8String style = "undefined", optional unsigned long index);