<!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 `disabled` IDL attribute setter has no effect before the underlying
    // CSSStyleSheet is created.
    test(function () {
      const style = document.createElement("style");
      style.disabled = true;
      assert_false(style.disabled);
      document.head.append(style);
      const sheet1 = style.sheet;
      assert_false(style.disabled);
      assert_false(sheet1.disabled);

      // The `disabled` attribute can be set after the sheet exists.
      style.disabled = true;
      assert_true(style.disabled);
      assert_true(sheet1.disabled);

      // Reset `disabled`.
      style.disabled = false;
      assert_false(style.disabled);
      assert_false(style.disabled);

      // Setting `disabled = true` on the CSSStyleSheet also carries over to the
      // HTMLStyleElement.
      sheet1.disabled = true;
      assert_true(style.disabled);
      assert_true(sheet1.disabled);
    }, "disabled attribute getter/setter");

    // 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>
