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<!DOCTYPE html>
<html>
<head>
<title>CSS Test: CSSOM StyleSheet Initial Values</title>
<link rel="author" title="Bear Travis" href="mailto:betravis@adobe.com">
<link rel="help" href="https://www.w3.org/TR/cssom-1/#css-style-sheets">
<link rel="help" href="https://www.w3.org/TR/cssom-1/#the-cssimportrule-interface">
<link rel="help" href="https://www.w3.org/TR/cssom-1/#the-linkstyle-interface">
<meta name="flags" content="dom">
<meta name="assert" content="StyleSheet and CSSStyleSheet objects have the properties specified in their interfaces">
<script src="/resources/testharness.js" type="text/javascript"></script>
<script src="/resources/testharnessreport.js" type="text/javascript"></script>
<style id="styleElement" type="text/css" media="all" title="internal style sheet" disabled="disabled">
@import url('support/a-green.css');
* { margin: 0; padding: 0; }
</style>
<link id="linkElement" rel="stylesheet" href="support/b-green.css">
</head>
<body>
<noscript>Test not run - javascript required.</noscript>
<div id="log"></div>
<script type="text/javascript">
var styleElement = document.getElementById("styleElement");
var linkElement = document.getElementById("linkElement");
var styleSheet;
var linkSheet;
// styleElement.sheet exists and is a CSSStyleSheet
// linkElement.sheet exists and is a CSSStyleSheet
test(function() {
assert_idl_attribute(styleElement, "sheet");
assert_readonly(styleElement, "sheet");
styleSheet = styleElement.sheet;
assert_true(styleSheet instanceof CSSStyleSheet);
assert_idl_attribute(linkElement, "sheet");
linkSheet = linkElement.sheet;
assert_true(linkSheet instanceof CSSStyleSheet);
}, "sheet_property");
// The sheet property on LinkStyle should always return the current associated style sheet.
test(function () {
var style = document.createElement("style");
document.querySelector("head").appendChild(style);
var sheet1 = style.sheet;
assert_equals(sheet1.cssRules.length, 0);
style.appendChild(document.createTextNode("a { color: green; }"));
assert_equals(style.sheet.cssRules.length, 1);
}, "sheet_property_updates");
// ownerRule, cssRules, insertRule and deleteRule properties exist on CSSStyleSheet
// ownerRule, cssRules are read only
test(function() {
assert_idl_attribute(styleSheet, "ownerRule");
assert_idl_attribute(styleSheet, "cssRules");
assert_inherits(styleSheet, "insertRule");
assert_inherits(styleSheet, "deleteRule");
assert_readonly(styleSheet, "ownerRule");
assert_readonly(styleSheet, "cssRules");
}, "CSSStyleSheet_properties");
var importSheet;
// CSSStyleSheet initial property values are correct
test(function() {
assert_equals(styleSheet.ownerRule, null);
assert_true(styleSheet.cssRules.length > 0);
assert_true(styleSheet.cssRules.item(0) instanceof CSSImportRule);
importSheet = styleSheet.cssRules.item(0).styleSheet;
}, "CSSStyleSheet_property_values");
// type, disabled, ownerNode, parentStyleSheet, href, title, and media properties exist on StyleSheet
// type, ownerNode, parentStyleSheet, href, and title properties are read only
test(function() {
assert_idl_attribute(styleSheet, "type");
assert_idl_attribute(styleSheet, "disabled");
assert_idl_attribute(styleSheet, "ownerNode");
assert_idl_attribute(styleSheet, "parentStyleSheet");
assert_idl_attribute(styleSheet, "href");
assert_idl_attribute(styleSheet, "title");
assert_idl_attribute(styleSheet, "media");
assert_readonly(styleSheet, "type");
assert_readonly(styleSheet, "ownerNode");
assert_readonly(styleSheet, "parentStyleSheet");
assert_readonly(styleSheet, "href");
assert_readonly(styleSheet, "title");
}, "StyleSheet_properties");
// StyleSheet initial property values are correct
test(function() {
assert_equals(styleSheet.type, "text/css");
assert_equals(styleSheet.disabled, false);
assert_equals(styleSheet.ownerNode, styleElement);
assert_equals(linkSheet.ownerNode, linkElement);
assert_equals(importSheet.ownerNode, null);
assert_equals(styleSheet.href, null);
assert_regexp_match(linkSheet.href, /support\/b-green.css$/);
assert_regexp_match(importSheet.href, /support\/a-green.css$/);
assert_equals(styleSheet.parentStyleSheet, null);
assert_equals(linkSheet.parentStyleSheet, null);
assert_equals(importSheet.parentStyleSheet, styleSheet);
assert_equals(styleSheet.title, "internal style sheet");
assert_equals(styleSheet.media.item(0), "all");
}, "StyleSheet_property_values");
</script>
</body>
</html>
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