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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
// Because of getComputedStyle, many CSSStyleDeclaration objects can be
// short-living.
interface CSSStyleDeclaration {
[CEReactions, SetterNeedsSubjectPrincipal=NonSystem, SetterThrows]
attribute UTF8String cssText;
readonly attribute unsigned long length;
getter UTF8String item(unsigned long index);
[Throws, ChromeOnly]
sequence<UTF8String> getCSSImageURLs(UTF8String property);
readonly attribute float usedFontSize;
UTF8String getPropertyValue(UTF8String property);
UTF8String getPropertyPriority(UTF8String property);
[CEReactions, NeedsSubjectPrincipal=NonSystem, Throws]
undefined setProperty(UTF8String property, [LegacyNullToEmptyString] UTF8String value, optional [LegacyNullToEmptyString] UTF8String priority = "");
[CEReactions, Throws]
UTF8String removeProperty(UTF8String property);
readonly attribute CSSRule? parentRule;