/*
- * Copyright 2009 Google Inc.
+ * Copyright 2010 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
*/
public class GQuerySelectorsTest extends GWTTestCase {
- public interface AllSelectors extends Selectors {
+ private interface AllSelectors extends Selectors {
// @Selector("h1[id]:contains(Selectors)")
// NodeList<Element> h1IdContainsSelectors();
// @Selector("*:first")
NodeList<Element> ulTocLiTocLine2();
}
- public interface TestSelectors extends Selectors {
+ private interface TestSelectors extends Selectors {
@Selector("*:checked")
- public GQuery allChecked();
+ GQuery allChecked();
@Selector("*:checked")
- public GQuery allChecked(Node n);
+ GQuery allChecked(Node n);
@Selector(".branchA")
- public GQuery branchA();
+ GQuery branchA();
@Selector(".branchA")
- public GQuery branchA(Node n);
+ GQuery branchA(Node n);
@Selector(".branchB")
- public GQuery branchB();
+ GQuery branchB();
@Selector(".branchB")
- public GQuery branchB(Node n);
+ GQuery branchB(Node n);
@Selector(".target")
- public GQuery target();
+ GQuery target();
@Selector(".target")
- public GQuery target(Node n);
+ GQuery target(Node n);
}
static Element e = null;
}
public void testSelectorsGeneratorNative() {
- $(e)
- .html(
+ $(e).html(
"<input type='radio' name='n' value='v1'>1</input>"
+ "<input type='radio' name='n' value='v2' checked='checked'>2</input>");
TestSelectors selectors = GWT.create(TestSelectors.class);
assertEquals(1, selectors.allChecked().size());
}
-
public void testSelectorsWithContext() {
- $(e)
- .append(
+ $(e).append(
"<div class='branchA'><div class='target'>branchA target</div></div>"
+ "<div class='branchB'><div class='target'>branchB target</div></div>");
boolean done = false;
for (Object o : array) {
values += o.toString() + " ";
- if (result.equals(o)){
+ if (result.equals(o)) {
done = true;
}
}
// This method is used to initialize a huge html String, because
// java 1.5 has a limitation in the size of static strings.
private String getTestContent() {
- String test_content = "";
- test_content += "<html><head> </head><body><div>";
- test_content += " <div class='head dialog'>";
- test_content += " <p><a href='http://www.w3.org/'><img alt='W3C' src='' height='48' width='72'></a></p>";
- test_content += " <h1 id='title'>Selectors</h1>";
- test_content += " <em><span>.</span></em>";
- test_content += " <h2>W3C Working Draft 15 December 2005</h2>";
- test_content += " <dl>";
- test_content += " <dt>This version:</dt>";
- test_content += " <dd><a href='http://www.w3.org/TR/2005/WD-css3-selectors-20051215'>";
- test_content += " http://www.w3.org/TR/2005/WD-css3-selectors-20051215</a></dd>";
- test_content += " <dt>Latest version:";
- test_content += " </dt><dd><a href='http://www.w3.org/TR/css3-selectors'>";
- test_content += " http://www.w3.org/TR/css3-selectors</a>";
- test_content += " </dd><dt>Previous version:";
- test_content += " </dt><dd><a href='http://www.w3.org/TR/2001/CR-css3-selectors-20011113'>";
- test_content += " http://www.w3.org/TR/2001/CR-css3-selectors-20011113</a>";
- test_content += " </dd><dt><a name='editors-list'></a>Editors:";
- test_content += " </dt><dd class='vcard'><span class='fn'>Daniel Glazman</span> (Invited";
- test_content += " </dd>";
- test_content += " <dd class='vcard'><a class='url fn' href='http://www.tantek.com/' lang='tr'>Tantek Çelik</a>";
- test_content += " </dd><dd class='vcard'><a href='mailto:ian@hixie.ch' class='url fn'>Ian";
- test_content += " Hickson</a> (<span class='company'><a href='http://www.google.com/'>Google</a></span>)";
- test_content += " </dd><dd class='vcard'><span class='fn'>Peter Linss</span> (former";
- test_content += " editor, <span class='company'><a href='http://www.netscape.com/'>Netscape/AOL</a></span>)";
- test_content += " </dd><dd class='vcard'><span class='fn'>John Williams</span> (former editor, <span class='company'><a href='http://www.quark.com/'>Quark, Inc.</a></span>)";
- test_content += " </dd></dl>";
- test_content += " <p class='copyright'><a href='http://www.w3.org/Consortium/Legal/ipr-notice#Copyright'>";
- test_content += " Copyright</a> © 2005 <a href='http://www.w3.org/'><abbr title='World Wide Web Consortium'>W3C</abbr></a><sup>®</sup>";
- test_content += " (<a href='http://www.csail.mit.edu/'><abbr title='Massachusetts";
- test_content += " Institute of Technology'>MIT</abbr></a>, <a href='http://www.ercim.org/'><acronym title='European Research";
- test_content += " Consortium for Informatics and Mathematics'>ERCIM</acronym></a>, <a href='http://www.keio.ac.jp/'>Keio</a>), All Rights Reserved.";
- test_content += " <a href='http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer'>liability</a>,";
- test_content += " <a href='http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks'>trademark</a>,";
- test_content += " <a href='http://www.w3.org/Consortium/Legal/copyright-documents'>document";
- test_content += " use</a> rules apply.";
- test_content += " </p><hr title='Separator for header'>";
- test_content += " </div>";
- test_content += " <h2><a name='abstract'></a>Abstract</h2>";
- test_content += " <p><em>Selectors</em> are patterns that match against elements in a";
- test_content += " tree. Selectors have been optimized for use with HTML and XML, and";
- test_content += " are designed to be usable in performance-critical code.</p>";
- test_content += " <p><acronym title='Cascading Style Sheets'>CSS</acronym> (Cascading";
- test_content += " Style Sheets) is a language for describing the rendering of <acronym title='Hypertext Markup Language'>HTML</acronym> and <acronym title='Extensible Markup Language'>XML</acronym> documents on";
- test_content += " screen, on paper, in speech, etc. CSS uses Selectors for binding";
- test_content += " describes extensions to the selectors defined in CSS level 2. These";
- test_content += " extended selectors will be used by CSS level 3.";
- test_content += " </p><p>Selectors define the following function:</p>";
- test_content += " <pre>expression ∗ element → boolean</pre>";
- test_content += " <p>That is, given an element and a selector, this specification";
- test_content += " defines whether that element matches the selector.</p>";
- test_content += " <p>These expressions can also be used, for instance, to select a set";
- test_content += " subtree. <acronym title='Simple Tree Transformation";
- test_content += " Sheets'>STTS</acronym> (Simple Tree Transformation Sheets), a";
- test_content += " language for transforming XML trees, uses this mechanism. <a href='#refsSTTS'>[STTS]</a></p>";
- test_content += " <h2><a name='status'></a>Status of this document</h2>";
- test_content += " <p><em>This section describes the status of this document at the";
- test_content += " of this technical report can be found in the <a href='http://www.w3.org/TR/'>W3C technical reports index at";
- test_content += " http://www.w3.org/TR/.</a></em></p>";
- test_content += " <p>This document describes the selectors that already exist in <a href='#refsCSS1'><abbr title='CSS level 1'>CSS1</abbr></a> and <a href='#refsCSS21'><abbr title='CSS level 2'>CSS2</abbr></a>, and";
- test_content += " also proposes new selectors for <abbr title='CSS level";
- test_content += " 3'>CSS3</abbr> and other languages that may need them.</p>";
- test_content += " <p>The CSS Working Group doesn't expect that all implementations of";
- test_content += " CSS3 will have to implement all selectors. Instead, there will";
- test_content += " will include all of the selectors.</p>";
- test_content += " <p>This specification is a last call working draft for the the <a href='http://www.w3.org/Style/CSS/members'>CSS Working Group</a>";
- test_content += " (<a href='/Style/'>Style Activity</a>). This";
- test_content += " document is a revision of the <a href='http://www.w3.org/TR/2001/CR-css3-selectors-20011113/'>Candidate";
- test_content += " Recommendation dated 2001 November 13</a>, and has incorporated";
- test_content += " be demonstrable.</p>";
- test_content += " <p>All persons are encouraged to review and implement this";
- test_content += " specification and return comments to the (<a href='http://lists.w3.org/Archives/Public/www-style/'>archived</a>)";
- test_content += " public mailing list <a href='http://www.w3.org/Mail/Lists.html#www-style'>www-style</a>";
- test_content += " (see <a href='http://www.w3.org/Mail/Request'>instructions</a>). W3C";
- test_content += " The deadline for comments is 14 January 2006.</p>";
- test_content += " <p>This is still a draft document and may be updated, replaced, or";
- test_content += " </p><p>This document may be available in <a href='http://www.w3.org/Style/css3-selectors-updates/translations'>translation</a>.";
- test_content += " </p><div class='subtoc'>";
- test_content += " <h2><a name='contents'>Table of contents</a></h2>";
- test_content += " <ul class='toc'>";
- test_content += " <li class='tocline2'><a href='#context'>1. Introduction</a>";
- test_content += " <ul>";
- test_content += " <li><a href='#dependencies'>1.1. Dependencies</a></li>";
- test_content += " <li><a href='#terminology'>1.2. Terminology</a></li>";
- test_content += " <li><a href='#changesFromCSS2'>1.3. Changes from CSS2</a></li>";
- test_content += " </ul>";
- test_content += " </li><li class='tocline2'><a href='#selectors'>2. Selectors</a>";
- test_content += " </li><li class='tocline2'><a href='#casesens'>3. Case sensitivity</a>";
- test_content += " </li><li class='tocline2'><a href='#selector-syntax'>4. Selector syntax</a>";
- test_content += " </li><li class='tocline2'><a href='#grouping'>5. Groups of selectors</a>";
- test_content += " </li><li class='tocline2'><a href='#simple-selectors'>6. Simple selectors</a>";
- test_content += " <ul class='toc'>";
- test_content += " <li class='tocline3'><a href='#type-selectors'>6.1. Type";
- test_content += " selectors</a>";
- test_content += " <ul class='toc'>";
- test_content += " <li class='tocline4'><a href='#typenmsp'>6.1.1. Type";
- test_content += " selectors and namespaces</a></li>";
- test_content += " </ul>";
- test_content += " </li><li class='tocline3'><a href='#universal-selector'>6.2.";
- test_content += " Universal selector</a>";
- test_content += " <ul>";
- test_content += " <li><a href='#univnmsp'>6.2.1. Universal selector and";
- test_content += " namespaces</a></li>";
- test_content += " </ul>";
- test_content += " </li><li class='tocline3'><a href='#attribute-selectors'>6.3.";
- test_content += " Attribute selectors</a>";
- test_content += " <ul class='toc'>";
- test_content += " <li class='tocline4'><a href='#attribute-representation'>6.3.1.";
- test_content += " values</a>";
- test_content += " </li><li><a href='#attribute-substrings'>6.3.2. Substring";
- test_content += " matching attribute selectors</a>";
- test_content += " </li><li class='tocline4'><a href='#attrnmsp'>6.3.3.";
- test_content += " Attribute selectors and namespaces</a>";
- test_content += " </li><li class='tocline4'><a href='#def-values'>6.3.4.";
- test_content += " Default attribute values in DTDs</a></li>";
- test_content += " </ul>";
- test_content += " </li><li class='tocline3'><a href='#class-html'>6.4. Class";
- test_content += " selectors</a>";
- test_content += " </li><li class='tocline3'><a href='#id-selectors'>6.5. ID";
- test_content += " selectors</a>";
- test_content += " </li><li class='tocline3'><a href='#pseudo-classes'>6.6.";
- test_content += " Pseudo-classes</a>";
- test_content += " <ul class='toc'>";
- test_content += " <li class='tocline4'><a href='#dynamic-pseudos'>6.6.1.";
- test_content += " Dynamic pseudo-classes</a>";
- test_content += " </li><li class='tocline4'><a href='#target-pseudo'>6.6.2. The";
- test_content += " :target pseudo-class</a>";
- test_content += " </li><li class='tocline4'><a href='#lang-pseudo'>6.6.3. The";
- test_content += " :lang() pseudo-class</a>";
- test_content += " </li><li class='tocline4'><a href='#UIstates'>6.6.4. UI";
- test_content += " element states pseudo-classes</a>";
- test_content += " </li><li class='tocline4'><a href='#structural-pseudos'>6.6.5.";
- test_content += " Structural pseudo-classes</a>";
- test_content += " <ul>";
- test_content += " <li><a href='#root-pseudo'>:root";
- test_content += " pseudo-class</a>";
- test_content += " </li><li><a href='#nth-child-pseudo'>:nth-child()";
- test_content += " pseudo-class</a>";
- test_content += " </li><li><a href='#nth-last-child-pseudo'>:nth-last-child()</a>";
- test_content += " </li><li><a href='#nth-of-type-pseudo'>:nth-of-type()";
- test_content += " pseudo-class</a>";
- test_content += " </li><li><a href='#nth-last-of-type-pseudo'>:nth-last-of-type()</a>";
- test_content += " </li><li><a href='#first-child-pseudo'>:first-child";
- test_content += " pseudo-class</a>";
- test_content += " </li><li><a href='#last-child-pseudo'>:last-child";
- test_content += " pseudo-class</a>";
- test_content += " </li><li><a href='#first-of-type-pseudo'>:first-of-type";
- test_content += " pseudo-class</a>";
- test_content += " </li><li><a href='#last-of-type-pseudo'>:last-of-type";
- test_content += " pseudo-class</a>";
- test_content += " </li><li><a href='#only-child-pseudo'>:only-child";
- test_content += " pseudo-class</a>";
- test_content += " </li><li><a href='#only-of-type-pseudo'>:only-of-type";
- test_content += " pseudo-class</a>";
- test_content += " </li><li><a href='#empty-pseudo'>:empty";
- test_content += " pseudo-class</a></li>";
- test_content += " </ul>";
- test_content += " </li><li class='tocline4'><a href='#negation'>6.6.7. The";
- test_content += " negation pseudo-class</a></li>";
- test_content += " </ul>";
- test_content += " </li>";
- test_content += " </ul>";
- test_content += " </li><li><a href='#pseudo-elements'>7. Pseudo-elements</a>";
- test_content += " <ul>";
- test_content += " <li><a href='#first-line'>7.1. The ::first-line";
- test_content += " pseudo-element</a>";
- test_content += " </li><li><a href='#first-letter'>7.2. The ::first-letter";
- test_content += " pseudo-element</a>";
- test_content += " </li><li><a href='#UIfragments'>7.3. The ::selection";
- test_content += " pseudo-element</a>";
- test_content += " </li><li><a href='#gen-content'>7.4. The ::before and ::after";
- test_content += " pseudo-elements</a></li>";
- test_content += " </ul>";
- test_content += " </li><li class='tocline2'><a href='#combinators'>8. Combinators</a>";
- test_content += " <ul class='toc'>";
- test_content += " <li class='tocline3'><a href='#descendant-combinators'>8.1.";
- test_content += " Descendant combinators</a>";
- test_content += " </li><li class='tocline3'><a href='#child-combinators'>8.2. Child";
- test_content += " combinators</a>";
- test_content += " </li><li class='tocline3'><a href='#sibling-combinators'>8.3. Sibling";
- test_content += " combinators</a>";
- test_content += " <ul class='toc'>";
- test_content += " <li class='tocline4'><a href='#adjacent-sibling-combinators'>8.3.1.";
- test_content += " Adjacent sibling combinator</a>";
- test_content += " </li><li class='tocline4'><a href='#general-sibling-combinators'>8.3.2.";
- test_content += " General sibling combinator</a></li>";
- test_content += " </ul>";
- test_content += " </li>";
- test_content += " </ul>";
- test_content += " </li><li class='tocline2'><a href='#specificity'>9. Calculating a selector's";
- test_content += " specificity</a>";
- test_content += " </li><li class='tocline2'><a href='#w3cselgrammar'>10. The grammar of";
- test_content += " Selectors</a>";
- test_content += " <ul class='toc'>";
- test_content += " <li class='tocline3'><a href='#grammar'>10.1. Grammar</a>";
- test_content += " </li><li class='tocline3'><a href='#lex'>10.2. Lexical scanner</a>";
- test_content += " </li>";
- test_content += " </ul>";
- test_content += " </li><li class='tocline2'><a href='#downlevel'>11. Namespaces and down-level";
- test_content += " clients</a>";
- test_content += " </li><li class='tocline2'><a href='#profiling'>12. Profiles</a>";
- test_content += " </li><li><a href='#Conformance'>13. Conformance and requirements</a>";
- test_content += " </li><li><a href='#Tests'>14. Tests</a>";
- test_content += " </li><li><a href='#ACKS'>15. Acknowledgements</a>";
- test_content += " </li><li class='tocline2'><a href='#references'>16. References</a>";
- test_content += " </li></ul>";
- test_content += " </div>";
- test_content += " <h2><a name='context'>1. Introduction</a></h2>";
- test_content += " <h3><a name='dependencies'></a>1.1. Dependencies</h3>";
- test_content += " <p>Some features of this specification are specific to CSS, or have";
- test_content += " specification, these have been described in terms of CSS2.1. <a href='#refsCSS21'>[CSS21]</a></p>";
- test_content += " <h3><a name='terminology'></a>1.2. Terminology</h3>";
- test_content += " <p>All of the text of this specification is normative except";
- test_content += " non-normative.</p>";
- test_content += " <h3><a name='changesFromCSS2'></a>1.3. Changes from CSS2</h3>";
- test_content += " <p><em>This section is non-normative.</em></p>";
- test_content += " <p>The main differences between the selectors in CSS2 and those in";
- test_content += " Selectors are:";
- test_content += " </p><ul>";
- test_content += " <li>the list of basic definitions (selector, group of selectors,";
- test_content += " of simple selectors, and the term 'simple selector' is now used for";
- test_content += " </li>";
- test_content += " <li>an optional namespace component is now allowed in type element";
- test_content += " selectors, the universal selector and attribute selectors";
- test_content += " </li>";
- test_content += " <li>a <a href='#general-sibling-combinators'>new combinator</a> has been";
- test_content += " </li>";
- test_content += " <li>new simple selectors including substring matching attribute";
- test_content += " selectors, and new pseudo-classes";
- test_content += " </li>";
- test_content += " <li>new pseudo-elements, and introduction of the '::' convention";
- test_content += " </li>";
- test_content += " <li>the grammar has been rewritten</li>";
- test_content += " <li>profiles to be added to specifications integrating Selectors";
- test_content += " and defining the set of selectors which is actually supported by";
- test_content += " </li>";
- test_content += " <li>Selectors are now a CSS3 Module and an independent";
- test_content += " </li>";
- test_content += " <li>the specification now has its own test suite</li>";
- test_content += " </ul>";
- test_content += " <h2><a name='selectors'></a>2. Selectors</h2>";
- test_content += " <p><em>This section is non-normative, as it merely summarizes the";
- test_content += " following sections.</em></p>";
- test_content += " <p>A Selector represents a structure. This structure can be used as a";
- test_content += " HTML or XML fragment corresponding to that structure.</p>";
- test_content += " <p>Selectors may range from simple element names to rich contextual";
- test_content += " representations.</p>";
- test_content += " <p>The following table summarizes the Selector syntax:</p>";
- test_content += " <table class='selectorsReview'>";
- test_content += " <thead>";
- test_content += " <tr>";
- test_content += " <th class='pattern'>Pattern</th>";
- test_content += " <th class='meaning'>Meaning</th>";
- test_content += " <th class='described'>Described in section</th>";
- test_content += " <th class='origin'>First defined in CSS level</th>";
- test_content += " </tr>";
- test_content += " </thead><tbody>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>*</td>";
- test_content += " <td class='meaning'>any element</td>";
- test_content += " <td class='described'><a href='#universal-selector'>Universal";
- test_content += " selector</a></td>";
- test_content += " <td class='origin'>2</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E</td>";
- test_content += " <td class='meaning'>an element of type E</td>";
- test_content += " <td class='described'><a href='#type-selectors'>Type selector</a></td>";
- test_content += " <td class='origin'>1</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E[foo]</td>";
- test_content += " <td class='meaning'>an E element with a 'foo' attribute</td>";
- test_content += " <td class='described'><a href='#attribute-selectors'>Attribute";
- test_content += " selectors</a></td>";
- test_content += " <td class='origin'>2</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E[foo='bar']</td>";
- test_content += " <td class='meaning'>an E element whose 'foo' attribute value is exactly";
- test_content += " </td>";
- test_content += " <td class='described'><a href='#attribute-selectors'>Attribute";
- test_content += " selectors</a></td>";
- test_content += " <td class='origin'>2</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E[foo~='bar']</td>";
- test_content += " <td class='meaning'>an E element whose 'foo' attribute value is a list of";
- test_content += " </td>";
- test_content += " <td class='described'><a href='#attribute-selectors'>Attribute";
- test_content += " selectors</a></td>";
- test_content += " <td class='origin'>2</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E[foo^='bar']</td>";
- test_content += " <td class='meaning'>an E element whose 'foo' attribute value begins exactly";
- test_content += " </td>";
- test_content += " <td class='described'><a href='#attribute-selectors'>Attribute";
- test_content += " selectors</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E[foo$='bar']</td>";
- test_content += " <td class='meaning'>an E element whose 'foo' attribute value ends exactly";
- test_content += " </td>";
- test_content += " <td class='described'><a href='#attribute-selectors'>Attribute";
- test_content += " selectors</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E[foo*='bar']</td>";
- test_content += " <td class='meaning'>an E element whose 'foo' attribute value contains the";
- test_content += " </td>";
- test_content += " <td class='described'><a href='#attribute-selectors'>Attribute";
- test_content += " selectors</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E[hreflang|='en']</td>";
- test_content += " <td class='meaning'>an E element whose 'hreflang' attribute has a";
- test_content += " </td>";
- test_content += " <td class='described'><a href='#attribute-selectors'>Attribute";
- test_content += " selectors</a></td>";
- test_content += " <td class='origin'>2</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:root</td>";
- test_content += " <td class='meaning'>an E element, root of the document</td>";
- test_content += " <td class='described'><a href='#structural-pseudos'>Structural";
- test_content += " pseudo-classes</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:nth-child(n)</td>";
- test_content += " <td class='meaning'>an E element, the n-th child of its parent</td>";
- test_content += " <td class='described'><a href='#structural-pseudos'>Structural";
- test_content += " pseudo-classes</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:nth-last-child(n)</td>";
- test_content += " <td class='meaning'>an E element, the n-th child of its parent, counting";
- test_content += " </td>";
- test_content += " <td class='described'><a href='#structural-pseudos'>Structural";
- test_content += " pseudo-classes</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:nth-of-type(n)</td>";
- test_content += " <td class='meaning'>an E element, the n-th sibling of its type</td>";
- test_content += " <td class='described'><a href='#structural-pseudos'>Structural";
- test_content += " pseudo-classes</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:nth-last-of-type(n)</td>";
- test_content += " <td class='meaning'>an E element, the n-th sibling of its type, counting";
- test_content += " </td>";
- test_content += " <td class='described'><a href='#structural-pseudos'>Structural";
- test_content += " pseudo-classes</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:first-child</td>";
- test_content += " <td class='meaning'>an E element, first child of its parent</td>";
- test_content += " <td class='described'><a href='#structural-pseudos'>Structural";
- test_content += " pseudo-classes</a></td>";
- test_content += " <td class='origin'>2</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:last-child</td>";
- test_content += " <td class='meaning'>an E element, last child of its parent</td>";
- test_content += " <td class='described'><a href='#structural-pseudos'>Structural";
- test_content += " pseudo-classes</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:first-of-type</td>";
- test_content += " <td class='meaning'>an E element, first sibling of its type</td>";
- test_content += " <td class='described'><a href='#structural-pseudos'>Structural";
- test_content += " pseudo-classes</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:last-of-type</td>";
- test_content += " <td class='meaning'>an E element, last sibling of its type</td>";
- test_content += " <td class='described'><a href='#structural-pseudos'>Structural";
- test_content += " pseudo-classes</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:only-child</td>";
- test_content += " <td class='meaning'>an E element, only child of its parent</td>";
- test_content += " <td class='described'><a href='#structural-pseudos'>Structural";
- test_content += " pseudo-classes</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:only-of-type</td>";
- test_content += " <td class='meaning'>an E element, only sibling of its type</td>";
- test_content += " <td class='described'><a href='#structural-pseudos'>Structural";
- test_content += " pseudo-classes</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:empty</td>";
- test_content += " <td class='meaning'>an E element that has no children (including text";
- test_content += " </td>";
- test_content += " <td class='described'><a href='#structural-pseudos'>Structural";
- test_content += " pseudo-classes</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:link<br>E:visited</td>";
- test_content += " <td class='meaning'>an E element being the source anchor of a hyperlink of";
- test_content += " </td>";
- test_content += " <td class='described'><a href='#link'>The link";
- test_content += " pseudo-classes</a></td>";
- test_content += " <td class='origin'>1</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:active<br>E:hover<br>E:focus</td>";
- test_content += " <td class='meaning'>an E element during certain user actions</td>";
- test_content += " <td class='described'><a href='#useraction-pseudos'>The user";
- test_content += " action pseudo-classes</a></td>";
- test_content += " <td class='origin'>1 and 2</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:target</td>";
- test_content += " <td class='meaning'>an E element being the target of the referring URI</td>";
- test_content += " <td class='described'><a href='#target-pseudo'>The target";
- test_content += " pseudo-class</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:lang(fr)</td>";
- test_content += " <td class='meaning'>an element of type E in language 'fr' (the document";
- test_content += " </td>";
- test_content += " <td class='described'><a href='#lang-pseudo'>The :lang()";
- test_content += " pseudo-class</a></td>";
- test_content += " <td class='origin'>2</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:enabled<br>E:disabled</td>";
- test_content += " <td class='meaning'>a user interface element E which is enabled or";
- test_content += " </td>";
- test_content += " <td class='described'><a href='#UIstates'>The UI element states";
- test_content += " pseudo-classes</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:checked<!--<br>E:indeterminate--></td>";
- test_content += " <td class='meaning'>a user interface element E which is checked<!-- or in an";
- test_content += " indeterminate state--> (for instance a radio-button or checkbox)";
- test_content += " </td>";
- test_content += " <td class='described'><a href='#UIstates'>The UI element states";
- test_content += " pseudo-classes</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E::first-line</td>";
- test_content += " <td class='meaning'>the first formatted line of an E element</td>";
- test_content += " <td class='described'><a href='#first-line'>The ::first-line";
- test_content += " pseudo-element</a></td>";
- test_content += " <td class='origin'>1</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E::first-letter</td>";
- test_content += " <td class='meaning'>the first formatted letter of an E element</td>";
- test_content += " <td class='described'><a href='#first-letter'>The ::first-letter";
- test_content += " pseudo-element</a></td>";
- test_content += " <td class='origin'>1</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E::selection</td>";
- test_content += " <td class='meaning'>the portion of an E element that is currently";
- test_content += " </td>";
- test_content += " <td class='described'><a href='#UIfragments'>The UI element";
- test_content += " fragments pseudo-elements</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E::before</td>";
- test_content += " <td class='meaning'>generated content before an E element</td>";
- test_content += " <td class='described'><a href='#gen-content'>The ::before";
- test_content += " pseudo-element</a></td>";
- test_content += " <td class='origin'>2</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E::after</td>";
- test_content += " <td class='meaning'>generated content after an E element</td>";
- test_content += " <td class='described'><a href='#gen-content'>The ::after";
- test_content += " pseudo-element</a></td>";
- test_content += " <td class='origin'>2</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E.warning</td>";
- test_content += " <td class='meaning'>an E element whose class is";
- test_content += " </td>";
- test_content += " <td class='described'><a href='#class-html'>Class";
- test_content += " selectors</a></td>";
- test_content += " <td class='origin'>1</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E#myid</td>";
- test_content += " <td class='meaning'>an E element with ID equal to 'myid'.</td>";
- test_content += " <td class='described'><a href='#id-selectors'>ID";
- test_content += " selectors</a></td>";
- test_content += " <td class='origin'>1</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E:not(s)</td>";
- test_content += " <td class='meaning'>an E element that does not match simple selector s</td>";
- test_content += " <td class='described'><a href='#negation'>Negation";
- test_content += " pseudo-class</a></td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E F</td>";
- test_content += " <td class='meaning'>an F element descendant of an E element</td>";
- test_content += " <td class='described'><a href='#descendant-combinators'>Descendant";
- test_content += " combinator</a></td>";
- test_content += " <td class='origin'>1</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E > F</td>";
- test_content += " <td class='meaning'>an F element child of an E element</td>";
- test_content += " <td class='described'><a href='#child-combinators'>Child";
- test_content += " combinator</a></td>";
- test_content += " <td class='origin'>2</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E + F</td>";
- test_content += " <td class='meaning'>an F element immediately preceded by an E element</td>";
- test_content += " <td class='described'><a href='#adjacent-sibling-combinators'>Adjacent sibling combinator</a>";
- test_content += " </td>";
- test_content += " <td class='origin'>2</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <td class='pattern'>E ~ F</td>";
- test_content += " <td class='meaning'>an F element preceded by an E element</td>";
- test_content += " <td class='described'><a href='#general-sibling-combinators'>General sibling combinator</a>";
- test_content += " </td>";
- test_content += " <td class='origin'>3</td>";
- test_content += " </tr>";
- test_content += " </tbody>";
- test_content += " </table>";
- test_content += " <p>The meaning of each selector is derived from the table above by";
- test_content += " column.</p>";
- test_content += " <h2><a name='casesens'>3. Case sensitivity</a></h2>";
- test_content += " <p>The case sensitivity of document language element names, attribute";
- test_content += " names, and attribute values in selectors depends on the document";
- test_content += " but in XML, they are case-sensitive.</p>";
- test_content += " <h2><a name='selector-syntax'>4. Selector syntax</a></h2>";
- test_content += " <p>A <dfn><a name='selector'>selector</a></dfn> is a chain of one";
- test_content += " or more <a href='#sequence'>sequences of simple selectors</a>";
- test_content += " separated by <a href='#combinators'>combinators</a>.</p>";
- test_content += " <p>A <dfn><a name='sequence'>sequence of simple selectors</a></dfn>";
- test_content += " is a chain of <a href='#simple-selectors-dfn'>simple selectors</a>";
- test_content += " that are not separated by a <a href='#combinators'>combinator</a>. It";
- test_content += " always begins with a <a href='#type-selectors'>type selector</a> or a";
- test_content += " <a href='#universal-selector'>universal selector</a>. No other type";
- test_content += " selector or universal selector is allowed in the sequence.</p>";
- test_content += " <p>A <dfn><a name='simple-selectors-dfn'></a><a href='#simple-selectors'>simple selector</a></dfn> is either a <a href='#type-selectors'>type selector</a>, <a href='#universal-selector'>universal selector</a>, <a href='#attribute-selectors'>attribute selector</a>, <a href='#class-html'>class selector</a>, <a href='#id-selectors'>ID selector</a>, <a href='#content-selectors'>content selector</a>, or <a href='#pseudo-classes'>pseudo-class</a>. One <a href='#pseudo-elements'>pseudo-element</a> may be appended to the last";
- test_content += " sequence of simple selectors.</p>";
- test_content += " <p><dfn>Combinators</dfn> are: white space, 'greater-than";
- test_content += " sign' (U+003E, <code>></code>), 'plus sign' (U+002B,";
- test_content += " <code>+</code>) and 'tilde' (U+007E, <code>~</code>). White";
- test_content += " space may appear between a combinator and the simple selectors around";
- test_content += " it. <a name='whitespace'></a>Only the characters 'space' (U+0020), 'tab'";
- test_content += " never part of white space.</p>";
- test_content += " <p>The elements of a document tree that are represented by a selector";
- test_content += " are the <dfn><a name='subject'></a>subjects of the selector</dfn>. A";
- test_content += " selector consisting of a single sequence of simple selectors";
- test_content += " sequence of simple selectors and a combinator to a sequence imposes";
- test_content += " simple selectors.</p>";
- test_content += " <p>An empty selector, containing no sequence of simple selectors and";
- test_content += " no pseudo-element, is an <a href='#Conformance'>invalid";
- test_content += " selector</a>.</p>";
- test_content += " <h2><a name='grouping'>5. Groups of selectors</a></h2>";
- test_content += " <p>When several selectors share the same declarations, they may be";
- test_content += " grouped into a comma-separated list. (A comma is U+002C.)</p>";
- test_content += " <div class='example'>";
- test_content += " <p>CSS examples:</p>";
- test_content += " <p>In this example, we condense three rules with identical";
- test_content += " declarations into one. Thus,</p>";
- test_content += " <pre>h1 { font-family: sans-serif }";
- test_content += " h3 { font-family: sans-serif }</pre>";
- test_content += " <p>is equivalent to:</p>";
- test_content += " <pre>h1, h2, h3 { font-family: sans-serif }</pre>";
- test_content += " </div>";
- test_content += " <p><strong>Warning</strong>: the equivalence is true in this example";
- test_content += " because all the selectors are valid selectors. If just one of these";
- test_content += " selectors were invalid, the entire group of selectors would be";
- test_content += " heading rules would be invalidated.</p>";
- test_content += " <h2><a name='simple-selectors'>6. Simple selectors</a></h2>";
- test_content += " <h3><a name='type-selectors'>6.1. Type selector</a></h3>";
- test_content += " <p>A <dfn>type selector</dfn> is the name of a document language";
- test_content += " type in the document tree.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Example:</p>";
- test_content += " <p>The following selector represents an <code>h1</code> element in the";
- test_content += " document tree:</p>";
- test_content += " <pre>h1</pre>";
- test_content += " </div>";
- test_content += " <h4><a name='typenmsp'>6.1.1. Type selectors and namespaces</a></h4>";
- test_content += " <p>Type selectors allow an optional namespace (<a href='#refsXMLNAMES'>[XMLNAMES]</a>) component. A namespace prefix";
- test_content += " (U+007C, <code>|</code>).</p>";
- test_content += " <p>The namespace component may be left empty to indicate that the";
- test_content += " selector is only to represent elements with no declared namespace.</p>";
- test_content += " <p>An asterisk may be used for the namespace prefix, indicating that";
- test_content += " with no namespace).</p>";
- test_content += " <p>Element type selectors that have no namespace component (no";
- test_content += " element's namespace (equivalent to '<code>*|</code>') unless a default";
- test_content += " namespace.</p>";
- test_content += " <p>A type selector containing a namespace prefix that has not been";
- test_content += " previously declared is an <a href='#Conformance'>invalid</a> selector.";
- test_content += " language implementing Selectors. In CSS, such a mechanism is defined";
- test_content += " in the General Syntax module.</p>";
- test_content += " <p>In a namespace-aware client, element type selectors will only match";
- test_content += " against the <a href='http://www.w3.org/TR/REC-xml-names/#NT-LocalPart'>local";
- test_content += " part</a>";
- test_content += " of the element's <a href='http://www.w3.org/TR/REC-xml-names/#ns-qualnames'>qualified";
- test_content += " name</a>. See <a href='#downlevel'>below</a> for notes about matching";
- test_content += " behaviors in down-level clients.</p>";
- test_content += " <p>In summary:</p>";
- test_content += " <dl>";
- test_content += " <dt><code>ns|E</code></dt>";
- test_content += " <dd>elements with name E in namespace ns</dd>";
- test_content += " <dt><code>*|E</code></dt>";
- test_content += " <dd>elements with name E in any namespace, including those without any";
- test_content += " </dd>";
- test_content += " <dt><code>|E</code></dt>";
- test_content += " <dd>elements with name E without any declared namespace</dd>";
- test_content += " <dt><code>E</code></dt>";
- test_content += " <dd>if no default namespace has been specified, this is equivalent to *|E.";
- test_content += " </dd>";
- test_content += " </dl>";
- test_content += " <div class='example'>";
- test_content += " <p>CSS examples:</p>";
- test_content += " <pre>@namespace foo url(http://www.example.com);";
- test_content += " h1 { color: green }</pre>";
- test_content += " <p>The first rule will match only <code>h1</code> elements in the";
- test_content += " 'http://www.example.com' namespace.</p>";
- test_content += " <p>The second rule will match all elements in the";
- test_content += " 'http://www.example.com' namespace.</p>";
- test_content += " <p>The third rule will match only <code>h1</code> elements without";
- test_content += " any declared namespace.</p>";
- test_content += " <p>The fourth rule will match <code>h1</code> elements in any";
- test_content += " namespace (including those without any declared namespace).</p>";
- test_content += " <p>The last rule is equivalent to the fourth rule because no default";
- test_content += " namespace has been defined.</p>";
- test_content += " </div>";
- test_content += " <h3><a name='universal-selector'>6.2. Universal selector</a></h3>";
- test_content += " <p>The <dfn>universal selector</dfn>, written 'asterisk'";
- test_content += " (<code>*</code>), represents the qualified name of any element";
- test_content += " specified, see <a href='#univnmsp'>Universal selector and";
- test_content += " Namespaces</a> below.</p>";
- test_content += " <p>If the universal selector is not the only component of a sequence";
- test_content += " of simple selectors, the <code>*</code> may be omitted.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <ul>";
- test_content += " <li><code>*[hreflang|=en]</code> and <code>[hreflang|=en]</code> are";
- test_content += " </li>";
- test_content += " <li><code>*.warning</code> and <code>.warning</code> are equivalent,";
- test_content += " </li>";
- test_content += " <li><code>*#myid</code> and <code>#myid</code> are equivalent.</li>";
- test_content += " </ul>";
- test_content += " </div>";
- test_content += " <p class='note'><strong>Note:</strong> it is recommended that the";
- test_content += " <code>*</code>, representing the universal selector, not be";
- test_content += " omitted.</p>";
- test_content += " <h4><a name='univnmsp'>6.2.1. Universal selector and namespaces</a></h4>";
- test_content += " <p>The universal selector allows an optional namespace component. It";
- test_content += " is used as follows:</p>";
- test_content += " <dl>";
- test_content += " <dt><code>ns|*</code></dt>";
- test_content += " <dd>all elements in namespace ns</dd>";
- test_content += " <dt><code>*|*</code></dt>";
- test_content += " <dd>all elements</dd>";
- test_content += " <dt><code>|*</code></dt>";
- test_content += " <dd>all elements without any declared namespace</dd>";
- test_content += " <dt><code>*</code></dt>";
- test_content += " <dd>if no default namespace has been specified, this is equivalent to *|*.";
- test_content += " </dd>";
- test_content += " </dl>";
- test_content += " <p>A universal selector containing a namespace prefix that has not";
- test_content += " been previously declared is an <a href='#Conformance'>invalid</a>";
- test_content += " to the language implementing Selectors. In CSS, such a mechanism is";
- test_content += " defined in the General Syntax module.</p>";
- test_content += " <h3><a name='attribute-selectors'>6.3. Attribute selectors</a></h3>";
- test_content += " <p>Selectors allow the representation of an element's attributes. When";
- test_content += " attribute selectors must be considered to match an element if that";
- test_content += " attribute selector.</p>";
- test_content += " <h4><a name='attribute-representation'>6.3.1. Attribute presence and values";
- test_content += " selectors</a></h4>";
- test_content += " <p>CSS2 introduced four attribute selectors:</p>";
- test_content += " <dl>";
- test_content += " <dt><code>[att]</code>";
- test_content += " </dt><dd>Represents an element with the <code>att</code> attribute, whatever the";
- test_content += " </dd>";
- test_content += " <dt><code>[att=val]</code></dt>";
- test_content += " <dd>Represents an element with the <code>att</code> attribute whose value is";
- test_content += " </dd>";
- test_content += " <dt><code>[att~=val]</code></dt>";
- test_content += " <dd>Represents an element with the <code>att</code> attribute whose value is";
- test_content += " a <a href='#whitespace'>whitespace</a>-separated list of words, one";
- test_content += " represent anything (since the words are <em>separated</em> by";
- test_content += " </dd>";
- test_content += " <dt><code>[att|=val]</code>";
- test_content += " </dt><dd>Represents an element with the <code>att</code> attribute, its value";
- test_content += " matches (e.g., the <code>hreflang</code> attribute on the";
- test_content += " <code>link</code> element in HTML) as described in RFC 3066 (<a href='#refsRFC3066'>[RFC3066]</a>). For <code>lang</code> (or";
- test_content += " <code>xml:lang</code>) language subcode matching, please see <a href='#lang-pseudo'>the <code>:lang</code> pseudo-class</a>.";
- test_content += " </dd>";
- test_content += " </dl>";
- test_content += " <p>Attribute values must be identifiers or strings. The";
- test_content += " case-sensitivity of attribute names and values in selectors depends on";
- test_content += " the document language.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <p>The following attribute selector represents an <code>h1</code>";
- test_content += " element that carries the <code>title</code> attribute, whatever its";
- test_content += " value:</p>";
- test_content += " <pre>h1[title]</pre>";
- test_content += " <p>In the following example, the selector represents a";
- test_content += " <code>span</code> element whose <code>class</code> attribute has";
- test_content += " exactly the value 'example':</p>";
- test_content += " <pre>span[class='example']</pre>";
- test_content += " <p>Multiple attribute selectors can be used to represent several";
- test_content += " attribute. Here, the selector represents a <code>span</code> element";
- test_content += " whose <code>hello</code> attribute has exactly the value 'Cleveland'";
- test_content += " and whose <code>goodbye</code> attribute has exactly the value";
- test_content += " 'Columbus':</p>";
- test_content += " <pre>span[hello='Cleveland'][goodbye='Columbus']</pre>";
- test_content += " <p>The following selectors illustrate the differences between '='";
- test_content += " 'copyright copyleft copyeditor' on a <code>rel</code> attribute. The";
- test_content += " second selector will only represent an <code>a</code> element with";
- test_content += " an <code>href</code> attribute having the exact value";
- test_content += " 'http://www.w3.org/'.</p>";
- test_content += " <pre>a[rel~='copyright']";
- test_content += " a[href='http://www.w3.org/']</pre>";
- test_content += " <p>The following selector represents a <code>link</code> element";
- test_content += " whose <code>hreflang</code> attribute is exactly 'fr'.</p>";
- test_content += " <pre>link[hreflang=fr]</pre>";
- test_content += " <p>The following selector represents a <code>link</code> element for";
- test_content += " which the values of the <code>hreflang</code> attribute begins with";
- test_content += " 'en', including 'en', 'en-US', and 'en-cockney':</p>";
- test_content += " <pre>link[hreflang|='en']</pre>";
- test_content += " <p>Similarly, the following selectors represents a";
- test_content += " <code>DIALOGUE</code> element whenever it has one of two different";
- test_content += " values for an attribute <code>character</code>:</p>";
- test_content += " <pre>DIALOGUE[character=romeo]";
- test_content += " DIALOGUE[character=juliet]</pre>";
- test_content += " </div>";
- test_content += " <h4><a name='attribute-substrings'></a>6.3.2. Substring matching attribute";
- test_content += " selectors</h4>";
- test_content += " <p>Three additional attribute selectors are provided for matching";
- test_content += " substrings in the value of an attribute:</p>";
- test_content += " <dl>";
- test_content += " <dt><code>[att^=val]</code></dt>";
- test_content += " <dd>Represents an element with the <code>att</code> attribute whose value";
- test_content += " </dd>";
- test_content += " <dt><code>[att$=val]</code>";
- test_content += " </dt><dd>Represents an element with the <code>att</code> attribute whose value";
- test_content += " </dd>";
- test_content += " <dt><code>[att*=val]</code>";
- test_content += " </dt><dd>Represents an element with the <code>att</code> attribute whose value";
- test_content += " </dd>";
- test_content += " </dl>";
- test_content += " <p>Attribute values must be identifiers or strings. The";
- test_content += " case-sensitivity of attribute names in selectors depends on the";
- test_content += " document language.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <p>The following selector represents an HTML <code>object</code>,";
- test_content += " image:</p>";
- test_content += " <pre>object[type^='image/']</pre>";
- test_content += " <p>The following selector represents an HTML anchor <code>a</code> with an";
- test_content += " <code>href</code> attribute whose value ends with '.html'.</p>";
- test_content += " <pre>a[href$='.html']</pre>";
- test_content += " <p>The following selector represents an HTML paragraph with a";
- test_content += " <code>title</code>";
- test_content += " attribute whose value contains the substring 'hello'</p>";
- test_content += " <pre>p[title*='hello']</pre>";
- test_content += " </div>";
- test_content += " <h4><a name='attrnmsp'>6.3.3. Attribute selectors and namespaces</a></h4>";
- test_content += " <p>Attribute selectors allow an optional namespace component to the";
- test_content += " separator 'vertical bar' (<code>|</code>). In keeping with";
- test_content += " apply to attributes, therefore attribute selectors without a namespace";
- test_content += " (equivalent to '<code>|attr</code>'). An asterisk may be used for the";
- test_content += " </p><p>An attribute selector with an attribute name containing a namespace";
- test_content += " prefix that has not been previously declared is an <a href='#Conformance'>invalid</a> selector. The mechanism for";
- test_content += " a namespace prefix is left up to the language implementing Selectors.";
- test_content += " </p><div class='example'>";
- test_content += " <p>CSS examples:</p>";
- test_content += " <pre>@namespace foo 'http://www.example.com';";
- test_content += " [att] { color: green }</pre>";
- test_content += " <p>The first rule will match only elements with the attribute";
- test_content += " <code>att</code> in the 'http://www.example.com' namespace with the";
- test_content += " value 'val'.</p>";
- test_content += " <p>The second rule will match only elements with the attribute";
- test_content += " <code>att</code> regardless of the namespace of the attribute";
- test_content += " (including no declared namespace).</p>";
- test_content += " <p>The last two rules are equivalent and will match only elements";
- test_content += " with the attribute <code>att</code> where the attribute is not";
- test_content += " declared to be in a namespace.</p>";
- test_content += " </div>";
- test_content += " <h4><a name='def-values'>6.3.4. Default attribute values in DTDs</a></h4>";
- test_content += " <p>Attribute selectors represent explicitly set attribute values in";
- test_content += " selectors. Selectors should be designed so that they work even if the";
- test_content += " default values are not included in the document tree.</p>";
- test_content += " <p>More precisely, a UA is <em>not</em> required to read an 'external";
- test_content += " subset' of the DTD but <em>is</em> required to look for default";
- test_content += " attribute values in the document's 'internal subset.' (See <a href='#refsXML10'>[XML10]</a> for definitions of these subsets.)</p>";
- test_content += " <p>A UA that recognizes an XML namespace <a href='#refsXMLNAMES'>[XMLNAMES]</a> is not required to use its";
- test_content += " required to use its built-in knowledge of the XHTML DTD.)</p>";
- test_content += " <p class='note'><strong>Note:</strong> Typically, implementations";
- test_content += " choose to ignore external subsets.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Example:</p>";
- test_content += " <p>Consider an element EXAMPLE with an attribute 'notation' that has a";
- test_content += " default value of 'decimal'. The DTD fragment might be</p>";
- test_content += " <pre class='dtd-example'><!ATTLIST EXAMPLE notation (decimal,octal) 'decimal'></pre>";
- test_content += " <p>If the style sheet contains the rules</p>";
- test_content += " <pre>EXAMPLE[notation=decimal] { /*... default property settings ...*/ }";
- test_content += " EXAMPLE[notation=octal] { /*... other settings...*/ }</pre>";
- test_content += " <p>the first rule will not match elements whose 'notation' attribute";
- test_content += " attribute selector for the default value must be dropped:</p>";
- test_content += " <pre>EXAMPLE { /*... default property settings ...*/ }";
- test_content += " EXAMPLE[notation=octal] { /*... other settings...*/ }</pre>";
- test_content += " <p>Here, because the selector <code>EXAMPLE[notation=octal]</code> is";
- test_content += " cases' style rules.</p>";
- test_content += " </div>";
- test_content += " <h3><a name='class-html'>6.4. Class selectors</a></h3>";
- test_content += " <p>Working with HTML, authors may use the period (U+002E,";
- test_content += " <code>.</code>) notation as an alternative to the <code>~=</code>";
- test_content += " notation when representing the <code>class</code> attribute. Thus, for";
- test_content += " HTML, <code>div.value</code> and <code>div[class~=value]</code> have";
- test_content += " 'period' (<code>.</code>).</p>";
- test_content += " <p>UAs may apply selectors using the period (.) notation in XML";
- test_content += " 1.0 <a href='#refsSVG'>[SVG]</a> describes the <a href='http://www.w3.org/TR/2001/PR-SVG-20010719/styling.html#ClassAttribute'>SVG";
- test_content += " 'class' attribute</a> and how a UA should interpret it, and";
- test_content += " similarly MathML 1.01 <a href='#refsMATH'>[MATH]</a> describes the <a href='http://www.w3.org/1999/07/REC-MathML-19990707/chapter2.html#sec2.3.4'>MathML";
- test_content += " 'class' attribute</a>.)</p>";
- test_content += " <div class='example'>";
- test_content += " <p>CSS examples:</p>";
- test_content += " <p>We can assign style information to all elements with";
- test_content += " <code>class~='pastoral'</code> as follows:</p>";
- test_content += " <pre>*.pastoral { color: green } /* all elements with class~=pastoral */</pre>";
- test_content += " <p>or just</p>";
- test_content += " <pre>.pastoral { color: green } /* all elements with class~=pastoral */</pre>";
- test_content += " <p>The following assigns style only to H1 elements with";
- test_content += " <code>class~='pastoral'</code>:</p>";
- test_content += " <pre>H1.pastoral { color: green } /* H1 elements with class~=pastoral */</pre>";
- test_content += " <p>Given these rules, the first H1 instance below would not have";
- test_content += " green text, while the second would:</p>";
- test_content += " <pre><H1>Not green</H1>";
- test_content += " <H1 class='pastoral'>Very green</H1></pre>";
- test_content += " </div>";
- test_content += " <p>To represent a subset of 'class' values, each value must be preceded";
- test_content += " by a '.', in any order.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>CSS example:</p>";
- test_content += " <p>The following rule matches any P element whose 'class' attribute";
- test_content += " has been assigned a list of <a href='#whitespace'>whitespace</a>-separated values that includes";
- test_content += " 'pastoral' and 'marine':</p>";
- test_content += " <pre>p.pastoral.marine { color: green }</pre>";
- test_content += " <p>This rule matches when <code>class='pastoral blue aqua";
- test_content += " marine'</code> but does not match for <code>class='pastoral";
- test_content += " blue'</code>.</p>";
- test_content += " </div>";
- test_content += " <p class='note'><strong>Note:</strong> Because CSS gives considerable";
- test_content += " not.</p>";
- test_content += " <p class='note'><strong>Note:</strong> If an element has multiple";
- test_content += " this specification.</p>";
- test_content += " <h3><a name='id-selectors'>6.5. ID selectors</a></h3>";
- test_content += " <p>Document languages may contain attributes that are declared to be";
- test_content += " applies.</p>";
- test_content += " <p>An ID-typed attribute of a document language allows authors to";
- test_content += " ID selectors represent an element instance based on its identifier. An";
- test_content += " <code>#</code>) immediately followed by the ID value, which must be an";
- test_content += " identifier.</p>";
- test_content += " <p>Selectors does not specify how a UA knows the ID-typed attribute of";
- test_content += " </p><div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <p>The following ID selector represents an <code>h1</code> element";
- test_content += " whose ID-typed attribute has the value 'chapter1':</p>";
- test_content += " <pre>h1#chapter1</pre>";
- test_content += " <p>The following ID selector represents any element whose ID-typed";
- test_content += " attribute has the value 'chapter1':</p>";
- test_content += " <pre>#chapter1</pre>";
- test_content += " <p>The following selector represents any element whose ID-typed";
- test_content += " attribute has the value 'z98y'.</p>";
- test_content += " <pre>*#z98y</pre>";
- test_content += " </div>";
- test_content += " <p class='note'><strong>Note.</strong> In XML 1.0 <a href='#refsXML10'>[XML10]</a>, the information about which attribute";
- test_content += " should use normal attribute selectors instead:";
- test_content += " <code>[name=p371]</code> instead of <code>#p371</code>. Elements in";
- test_content += " XML 1.0 documents without a DTD do not have IDs at all.</p>";
- test_content += " <p>If an element has multiple ID attributes, all of them must be";
- test_content += " DOM3 Core, XML DTDs, and namespace-specific knowledge.</p>";
- test_content += " <h3><a name='pseudo-classes'>6.6. Pseudo-classes</a></h3>";
- test_content += " <p>The pseudo-class concept is introduced to permit selection based on";
- test_content += " expressed using the other simple selectors.</p>";
- test_content += " <p>A pseudo-class always consists of a 'colon'";
- test_content += " (<code>:</code>) followed by the name of the pseudo-class and";
- test_content += " optionally by a value between parentheses.</p>";
- test_content += " <p>Pseudo-classes are allowed in all sequences of simple selectors";
- test_content += " sequences of simple selectors, after the leading type selector or";
- test_content += " document.</p>";
- test_content += " <h4><a name='dynamic-pseudos'>6.6.1. Dynamic pseudo-classes</a></h4>";
- test_content += " <p>Dynamic pseudo-classes classify elements on characteristics other";
- test_content += " that cannot be deduced from the document tree.</p>";
- test_content += " <p>Dynamic pseudo-classes do not appear in the document source or";
- test_content += " document tree.</p>";
- test_content += " <h5>The <a name='link'>link pseudo-classes: :link and :visited</a></h5>";
- test_content += " <p>User agents commonly display unvisited links differently from";
- test_content += " previously visited ones. Selectors";
- test_content += " provides the pseudo-classes <code>:link</code> and";
- test_content += " <code>:visited</code> to distinguish them:</p>";
- test_content += " <ul>";
- test_content += " <li>The <code>:link</code> pseudo-class applies to links that have";
- test_content += " </li>";
- test_content += " <li>The <code>:visited</code> pseudo-class applies once the link has";
- test_content += " </li>";
- test_content += " </ul>";
- test_content += " <p>After some amount of time, user agents may choose to return a";
- test_content += " visited link to the (unvisited) ':link' state.</p>";
- test_content += " <p>The two states are mutually exclusive.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Example:</p>";
- test_content += " <p>The following selector represents links carrying class";
- test_content += " <code>external</code> and already visited:</p>";
- test_content += " <pre>a.external:visited</pre>";
- test_content += " </div>";
- test_content += " <p class='note'><strong>Note:</strong> It is possible for style sheet";
- test_content += " </p><p>UAs may therefore treat all links as unvisited links, or implement";
- test_content += " and unvisited links differently.</p>";
- test_content += " <h5>The <a name='useraction-pseudos'>user action pseudo-classes";
- test_content += " :hover, :active, and :focus</a></h5>";
- test_content += " <p>Interactive user agents sometimes change the rendering in response";
- test_content += " to user actions. Selectors provides";
- test_content += " acting on.</p>";
- test_content += " <ul>";
- test_content += " <li>The <code>:hover</code> pseudo-class applies while the user";
- test_content += " element. User agents not that do not support <a href='http://www.w3.org/TR/REC-CSS2/media.html#interactive-media-group'>interactive";
- test_content += " media</a> do not have to support this pseudo-class. Some conforming";
- test_content += " user agents that support <a href='http://www.w3.org/TR/REC-CSS2/media.html#interactive-media-group'>interactive";
- test_content += " media</a> may not be able to support this pseudo-class (e.g., a pen";
- test_content += " </li>";
- test_content += " <li>The <code>:active</code> pseudo-class applies while an element";
- test_content += " </li>";
- test_content += " <li>The <code>:focus</code> pseudo-class applies while an element";
- test_content += " </li>";
- test_content += " </ul>";
- test_content += " <p>There may be document language or implementation specific limits on";
- test_content += " which elements can become <code>:active</code> or acquire";
- test_content += " <code>:focus</code>.</p>";
- test_content += " <p>These pseudo-classes are not mutually exclusive. An element may";
- test_content += " match several pseudo-classes at the same time.</p>";
- test_content += " <p>Selectors doesn't define if the parent of an element that is";
- test_content += " ':active' or ':hover' is also in that state.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <pre>a:link /* unvisited links */";
- test_content += " a:active /* active links */</pre>";
- test_content += " <p>An example of combining dynamic pseudo-classes:</p>";
- test_content += " <pre>a:focus";
- test_content += " a:focus:hover</pre>";
- test_content += " <p>The last selector matches <code>a</code> elements that are in";
- test_content += " the pseudo-class :focus and in the pseudo-class :hover.</p>";
- test_content += " </div>";
- test_content += " <p class='note'><strong>Note:</strong> An element can be both ':visited'";
- test_content += " and ':active' (or ':link' and ':active').</p>";
- test_content += " <h4><a name='target-pseudo'>6.6.2. The target pseudo-class :target</a></h4>";
- test_content += " <p>Some URIs refer to a location within a resource. This kind of URI";
- test_content += " identifier (called the fragment identifier).</p>";
- test_content += " <p>URIs with fragment identifiers link to a certain element within the";
- test_content += " pointing to an anchor named <code>section_2</code> in an HTML";
- test_content += " document:</p>";
- test_content += " <pre>http://example.com/html/top.html#section_2</pre>";
- test_content += " <p>A target element can be represented by the <code>:target</code>";
- test_content += " the document has no target element.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Example:</p>";
- test_content += " <pre>p.note:target</pre>";
- test_content += " <p>This selector represents a <code>p</code> element of class";
- test_content += " <code>note</code> that is the target element of the referring";
- test_content += " URI.</p>";
- test_content += " </div>";
- test_content += " <div class='example'>";
- test_content += " <p>CSS example:</p>";
- test_content += " <p>Here, the <code>:target</code> pseudo-class is used to make the";
- test_content += " target element red and place an image before it, if there is one:</p>";
- test_content += " <pre>*:target { color : red }";
- test_content += " *:target::before { content : url(target.png) }</pre>";
- test_content += " </div>";
- test_content += " <h4><a name='lang-pseudo'>6.6.3. The language pseudo-class :lang</a></h4>";
- test_content += " <p>If the document language specifies how the human language of an";
- test_content += " element is determined, it is possible to write selectors that";
- test_content += " represent an element based on its language. For example, in HTML <a href='#refsHTML4'>[HTML4]</a>, the language is determined by a";
- test_content += " combination of the <code>lang</code> attribute, the <code>meta</code>";
- test_content += " headers). XML uses an attribute called <code>xml:lang</code>, and";
- test_content += " the language.</p>";
- test_content += " <p>The pseudo-class <code>:lang(C)</code> represents an element that";
- test_content += " <code>:lang()</code> selector is based solely on the identifier C";
- test_content += " element's language value, in the same way as if performed by the <a href='#attribute-representation'>'|='</a> operator in attribute";
- test_content += " selectors. The identifier C does not have to be a valid language";
- test_content += " name.</p>";
- test_content += " <p>C must not be empty. (If it is, the selector is invalid.)</p>";
- test_content += " <p class='note'><strong>Note:</strong> It is recommended that";
- test_content += " documents and protocols indicate language using codes from RFC 3066 <a href='#refsRFC3066'>[RFC3066]</a> or its successor, and by means of";
- test_content += " 'xml:lang' attributes in the case of XML-based documents <a href='#refsXML10'>[XML10]</a>. See <a href='http://www.w3.org/International/questions/qa-lang-2or3.html'>";
- test_content += " 'FAQ: Two-letter or three-letter language codes.'</a></p>";
- test_content += " <div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <p>The two following selectors represent an HTML document that is in";
- test_content += " Belgian, French, or German. The two next selectors represent";
- test_content += " <code>q</code> quotations in an arbitrary element in Belgian, French,";
- test_content += " or German.</p>";
- test_content += " <pre>html:lang(fr-be)";
- test_content += " :lang(de) > q</pre>";
- test_content += " </div>";
- test_content += " <h4><a name='UIstates'>6.6.4. The UI element states pseudo-classes</a></h4>";
- test_content += " <h5><a name='enableddisabled'>The :enabled and :disabled pseudo-classes</a></h5>";
- test_content += " <p>The <code>:enabled</code> pseudo-class allows authors to customize";
- test_content += " an enabled <code>input</code> element without also specifying what it";
- test_content += " would look like when it was disabled.</p>";
- test_content += " <p>Similar to <code>:enabled</code>, <code>:disabled</code> allows the";
- test_content += " element should look.</p>";
- test_content += " <p>Most elements will be neither enabled nor disabled. An element is";
- test_content += " presently activate it or transfer focus to it.</p>";
- test_content += " <h5><a name='checked'>The :checked pseudo-class</a></h5>";
- test_content += " <p>Radio and checkbox elements can be toggled by the user. Some menu";
- test_content += " toggled 'on' the <code>:checked</code> pseudo-class applies. The";
- test_content += " <code>:checked</code> pseudo-class initially applies to such elements";
- test_content += " that have the HTML4 <code>selected</code> and <code>checked</code>";
- test_content += " attributes as described in <a href='http://www.w3.org/TR/REC-html40/interact/forms.html#h-17.2.1'>Section";
- test_content += " 17.2.1 of HTML4</a>, but of course the user can toggle 'off' such";
- test_content += " elements in which case the <code>:checked</code> pseudo-class would no";
- test_content += " longer apply. While the <code>:checked</code> pseudo-class is dynamic";
- test_content += " on the presence of the semantic HTML4 <code>selected</code> and";
- test_content += " <code>checked</code> attributes, it applies to all media.";
- test_content += " </p><h5><a name='indeterminate'>The :indeterminate pseudo-class</a></h5>";
- test_content += " <div class='note'>";
- test_content += " <p>Radio and checkbox elements can be toggled by the user, but are";
- test_content += " This can be due to an element attribute, or DOM manipulation.</p>";
- test_content += " <p>A future version of this specification may introduce an";
- test_content += " <code>:indeterminate</code> pseudo-class that applies to such elements.";
- test_content += " <!--While the <code>:indeterminate</code> pseudo-class is dynamic in";
- test_content += " the presence of an element attribute, it applies to all media.</p>";
- test_content += " <p>Components of a radio-group initialized with no pre-selected choice";
- test_content += " are an example of :indeterminate state.--></p>";
- test_content += " </div>";
- test_content += " <h4><a name='structural-pseudos'>6.6.5. Structural pseudo-classes</a></h4>";
- test_content += " <p>Selectors introduces the concept of <dfn>structural";
- test_content += " pseudo-classes</dfn> to permit selection based on extra information that";
- test_content += " the document tree but cannot be represented by other simple selectors or";
- test_content += " </p><p>Note that standalone pieces of PCDATA (text nodes in the DOM) are";
- test_content += " </p><h5><a name='root-pseudo'>:root pseudo-class</a></h5>";
- test_content += " <p>The <code>:root</code> pseudo-class represents an element that is";
- test_content += " <code>HTML</code> element.";
- test_content += " </p><h5><a name='nth-child-pseudo'>:nth-child() pseudo-class</a></h5>";
- test_content += " <p>The";
- test_content += " <code>:nth-child(<var>a</var><code>n</code>+<var>b</var>)</code>";
- test_content += " <var>a</var><code>n</code>+<var>b</var>-1 siblings";
- test_content += " <strong>before</strong> it in the document tree, for a given positive";
- test_content += " integer or zero value of <code>n</code>, and has a parent element. In";
- test_content += " other words, this matches the <var>b</var>th child of an element after";
- test_content += " all the children have been split into groups of <var>a</var> elements";
- test_content += " each. For example, this allows the selectors to address every other";
- test_content += " of paragraph text in a cycle of four. The <var>a</var> and";
- test_content += " <var>b</var> values must be zero, negative integers or positive";
- test_content += " </p><p>In addition to this, <code>:nth-child()</code> can take";
- test_content += " '<code>odd</code>' and '<code>even</code>' as arguments instead.";
- test_content += " '<code>odd</code>' has the same signification as <code>2n+1</code>,";
- test_content += " and '<code>even</code>' has the same signification as <code>2n</code>.";
- test_content += " </p><div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <pre>tr:nth-child(2n+1) /* represents every odd row of an HTML table */";
- test_content += " p:nth-child(4n+4) { color: purple; }</pre>";
- test_content += " </div>";
- test_content += " <p>When <var>a</var>=0, no repeating is used, so for example";
- test_content += " <code>:nth-child(0n+5)</code> matches only the fifth child. When";
- test_content += " <var>a</var>=0, the <var>a</var><code>n</code> part need not be";
- test_content += " <code>:nth-child(<var>b</var>)</code> and the last example simplifies";
- test_content += " to <code>:nth-child(5)</code>.";
- test_content += " </p><div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <pre>foo:nth-child(0n+1) /* represents an element foo, first child of its parent element */";
- test_content += " foo:nth-child(1) /* same */</pre>";
- test_content += " </div>";
- test_content += " <p>When <var>a</var>=1, the number may be omitted from the rule.";
- test_content += " </p><div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <p>The following selectors are therefore equivalent:</p>";
- test_content += " <pre>bar:nth-child(1n+0) /* represents all bar elements, specificity (0,1,1) */";
- test_content += " bar /* same but lower specificity (0,0,1) */</pre>";
- test_content += " </div>";
- test_content += " <p>If <var>b</var>=0, then every <var>a</var>th element is picked. In";
- test_content += " such a case, the <var>b</var> part may be omitted.";
- test_content += " </p><div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <pre>tr:nth-child(2n+0) /* represents every even row of an HTML table */";
- test_content += " tr:nth-child(2n) /* same */</pre>";
- test_content += " </div>";
- test_content += " <p>If both <var>a</var> and <var>b</var> are equal to zero, the";
- test_content += " pseudo-class represents no element in the document tree.</p>";
- test_content += " <p>The value <var>a</var> can be negative, but only the positive";
- test_content += " values of <var>a</var><code>n</code>+<var>b</var>, for";
- test_content += " <code>n</code>≥0, may represent an element in the document";
- test_content += " tree.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Example:</p>";
- test_content += " <pre>html|tr:nth-child(-n+6) /* represents the 6 first rows of XHTML tables */</pre>";
- test_content += " </div>";
- test_content += " <p>When the value <var>b</var> is negative, the '+' character in the";
- test_content += " character indicating the negative value of <var>b</var>).</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <pre>:nth-child(10n-1) /* represents the 9th, 19th, 29th, etc, element */";
- test_content += " :nth-child(10n+-1) /* Syntactically invalid, and would be ignored */</pre>";
- test_content += " </div>";
- test_content += " <h5><a name='nth-last-child-pseudo'>:nth-last-child() pseudo-class</a></h5>";
- test_content += " <p>The <code>:nth-last-child(<var>a</var>n+<var>b</var>)</code>";
- test_content += " <var>a</var><code>n</code>+<var>b</var>-1 siblings";
- test_content += " <strong>after</strong> it in the document tree, for a given positive";
- test_content += " integer or zero value of <code>n</code>, and has a parent element. See";
- test_content += " <code>:nth-child()</code> pseudo-class for the syntax of its argument.";
- test_content += " It also accepts the '<code>even</code>' and '<code>odd</code>' values";
- test_content += " </p><div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <pre>tr:nth-last-child(-n+2) /* represents the two last rows of an HTML table */";
- test_content += " counting from the last one */</pre>";
- test_content += " </div>";
- test_content += " <h5><a name='nth-of-type-pseudo'>:nth-of-type() pseudo-class</a></h5>";
- test_content += " <p>The <code>:nth-of-type(<var>a</var>n+<var>b</var>)</code>";
- test_content += " <var>a</var><code>n</code>+<var>b</var>-1 siblings with the same";
- test_content += " element name <strong>before</strong> it in the document tree, for a";
- test_content += " given zero or positive integer value of <code>n</code>, and has a";
- test_content += " parent element. In other words, this matches the <var>b</var>th child";
- test_content += " groups of a elements each. See <code>:nth-child()</code> pseudo-class";
- test_content += " '<code>even</code>' and '<code>odd</code>' values.";
- test_content += " </p><div class='example'>";
- test_content += " <p>CSS example:</p>";
- test_content += " <p>This allows an author to alternate the position of floated images:</p>";
- test_content += " <pre>img:nth-of-type(2n+1) { float: right; }";
- test_content += " img:nth-of-type(2n) { float: left; }</pre>";
- test_content += " </div>";
- test_content += " <h5><a name='nth-last-of-type-pseudo'>:nth-last-of-type() pseudo-class</a></h5>";
- test_content += " <p>The <code>:nth-last-of-type(<var>a</var>n+<var>b</var>)</code>";
- test_content += " <var>a</var><code>n</code>+<var>b</var>-1 siblings with the same";
- test_content += " element name <strong>after</strong> it in the document tree, for a";
- test_content += " given zero or positive integer value of <code>n</code>, and has a";
- test_content += " parent element. See <code>:nth-child()</code> pseudo-class for the";
- test_content += " syntax of its argument. It also accepts the '<code>even</code>' and '<code>odd</code>'";
- test_content += " </p><div class='example'>";
- test_content += " <p>Example:</p>";
- test_content += " <p>To represent all <code>h2</code> children of an XHTML";
- test_content += " <code>body</code> except the first and last, one could use the";
- test_content += " following selector:</p>";
- test_content += " <pre>body > h2:nth-of-type(n+2):nth-last-of-type(n+2)</pre>";
- test_content += " <p>In this case, one could also use <code>:not()</code>, although the";
- test_content += " selector ends up being just as long:</p>";
- test_content += " <pre>body > h2:not(:first-of-type):not(:last-of-type)</pre>";
- test_content += " </div>";
- test_content += " <h5><a name='first-child-pseudo'>:first-child pseudo-class</a></h5>";
- test_content += " <p>Same as <code>:nth-child(1)</code>. The <code>:first-child</code>";
- test_content += " </p><div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <p>The following selector represents a <code>p</code> element that is";
- test_content += " the first child of a <code>div</code> element:</p>";
- test_content += " <pre>div > p:first-child</pre>";
- test_content += " <p>This selector can represent the <code>p</code> inside the";
- test_content += " <code>div</code> of the following fragment:</p>";
- test_content += " <pre><p> The last P before the note.</p>";
- test_content += " </div></pre>";
- test_content += " but cannot represent the second <code>p</code> in the following";
- test_content += " <pre><p> The last P before the note.</p>";
- test_content += " </div></pre>";
- test_content += " <p>The following two selectors are usually equivalent:</p>";
- test_content += " <pre>* > a:first-child /* a is first child of any element */";
- test_content += " a:first-child /* Same (assuming a is not the root element) */</pre>";
- test_content += " </div>";
- test_content += " <h5><a name='last-child-pseudo'>:last-child pseudo-class</a></h5>";
- test_content += " <p>Same as <code>:nth-last-child(1)</code>. The <code>:last-child</code>";
- test_content += " </p><div class='example'>";
- test_content += " <p>Example:</p>";
- test_content += " <p>The following selector represents a list item <code>li</code> that";
- test_content += " is the last child of an ordered list <code>ol</code>.";
- test_content += " </p><pre>ol > li:last-child</pre>";
- test_content += " </div>";
- test_content += " <h5><a name='first-of-type-pseudo'>:first-of-type pseudo-class</a></h5>";
- test_content += " <p>Same as <code>:nth-of-type(1)</code>. The <code>:first-of-type</code>";
- test_content += " </p><div class='example'>";
- test_content += " <p>Example:</p>";
- test_content += " <p>The following selector represents a definition title";
- test_content += " <code>dt</code> inside a definition list <code>dl</code>, this";
- test_content += " <code>dt</code> being the first of its type in the list of children of";
- test_content += " its parent element.</p>";
- test_content += " <pre>dl dt:first-of-type</pre>";
- test_content += " <p>It is a valid description for the first two <code>dt</code>";
- test_content += " elements in the following example but not for the third one:</p>";
- test_content += " <pre><dl>";
- test_content += " </dl></pre>";
- test_content += " </div>";
- test_content += " <h5><a name='last-of-type-pseudo'>:last-of-type pseudo-class</a></h5>";
- test_content += " <p>Same as <code>:nth-last-of-type(1)</code>. The";
- test_content += " <code>:last-of-type</code> pseudo-class represents an element that is";
- test_content += " element.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Example:</p>";
- test_content += " <p>The following selector represents the last data cell";
- test_content += " <code>td</code> of a table row.</p>";
- test_content += " <pre>tr > td:last-of-type</pre>";
- test_content += " </div>";
- test_content += " <h5><a name='only-child-pseudo'>:only-child pseudo-class</a></h5>";
- test_content += " <p>Represents an element that has a parent element and whose parent";
- test_content += " <code>:first-child:last-child</code> or";
- test_content += " <code>:nth-child(1):nth-last-child(1)</code>, but with a lower";
- test_content += " specificity.</p>";
- test_content += " <h5><a name='only-of-type-pseudo'>:only-of-type pseudo-class</a></h5>";
- test_content += " <p>Represents an element that has a parent element and whose parent";
- test_content += " as <code>:first-of-type:last-of-type</code> or";
- test_content += " <code>:nth-of-type(1):nth-last-of-type(1)</code>, but with a lower";
- test_content += " specificity.</p>";
- test_content += " <h5><a name='empty-pseudo'></a>:empty pseudo-class</h5>";
- test_content += " <p>The <code>:empty</code> pseudo-class represents an element that has";
- test_content += " empty or not.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <p><code>p:empty</code> is a valid representation of the following fragment:";
- test_content += " </p>";
- test_content += " <pre><p></p></pre>";
- test_content += " <p><code>foo:empty</code> is not a valid representation for the";
- test_content += " following fragments:</p>";
- test_content += " <pre><foo>bar</foo></pre>";
- test_content += " <pre><foo><bar>bla</bar></foo></pre>";
- test_content += " <pre><foo>this is not <bar>:empty</bar></foo></pre>";
- test_content += " </div>";
- test_content += " <h4><a name='content-selectors'>6.6.6. Blank</a></h4>";
- test_content += " <!-- It's the Return of Appendix H!!! Run away! -->";
- test_content += " <p>This section intentionally left blank.</p>";
- test_content += " <!-- (used to be :contains()) -->";
- test_content += " <h4><a name='negation'></a>6.6.7. The negation pseudo-class</h4>";
- test_content += " <p>The negation pseudo-class, <code>:not(<var>X</var>)</code>, is a";
- test_content += " functional notation taking a <a href='#simple-selectors-dfn'>simple";
- test_content += " selector</a> (excluding the negation pseudo-class itself and";
- test_content += " <!-- pseudo-elements are not simple selectors, so the above paragraph";
- test_content += " may be a bit confusing -->";
- test_content += " </p><div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <p>The following CSS selector matches all <code>button</code>";
- test_content += " elements in an HTML document that are not disabled.</p>";
- test_content += " <pre>button:not([DISABLED])</pre>";
- test_content += " <p>The following selector represents all but <code>FOO</code>";
- test_content += " elements.</p>";
- test_content += " <pre>*:not(FOO)</pre>";
- test_content += " <p>The following group of selectors represents all HTML elements";
- test_content += " except links.</p>";
- test_content += " <pre>html|*:not(:link):not(:visited)</pre>";
- test_content += " </div>";
- test_content += " <p>Default namespace declarations do not affect the argument of the";
- test_content += " type selector.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <p>Assuming that the default namespace is bound to";
- test_content += " elements that are not in that namespace:</p>";
- test_content += " <pre>*|*:not(*)</pre>";
- test_content += " <p>The following CSS selector matches any element being hovered,";
- test_content += " rule when they <em>are</em> being hovered.</p>";
- test_content += " <pre>*|*:not(:hover)</pre>";
- test_content += " </div>";
- test_content += " <p class='note'><strong>Note</strong>: the :not() pseudo allows";
- test_content += " useless selectors to be written. For instance <code>:not(*|*)</code>,";
- test_content += " which represents no element at all, or <code>foo:not(bar)</code>,";
- test_content += " which is equivalent to <code>foo</code> but with a higher";
- test_content += " specificity.</p>";
- test_content += " <h3><a name='pseudo-elements'>7. Pseudo-elements</a></h3>";
- test_content += " <p>Pseudo-elements create abstractions about the document tree beyond";
- test_content += " source document (e.g., the <code>::before</code> and";
- test_content += " <code>::after</code> pseudo-elements give access to generated";
- test_content += " content).</p>";
- test_content += " <p>A pseudo-element is made of two colons (<code>::</code>) followed";
- test_content += " by the name of the pseudo-element.</p>";
- test_content += " <p>This <code>::</code> notation is introduced by the current document";
- test_content += " <code>:first-line</code>, <code>:first-letter</code>,";
- test_content += " <code>:before</code> and <code>:after</code>). This compatibility is";
- test_content += " not allowed for the new pseudo-elements introduced in CSS level 3.</p>";
- test_content += " <p>Only one pseudo-element may appear per selector, and if present it";
- test_content += " must appear after the sequence of simple selectors that represents the";
- test_content += " <a href='#subject'>subjects</a> of the selector. <span class='note'>A";
- test_content += " pesudo-elements per selector.</span></p>";
- test_content += " <h4><a name='first-line'>7.1. The ::first-line pseudo-element</a></h4>";
- test_content += " <p>The <code>::first-line</code> pseudo-element describes the contents";
- test_content += " </p><div class='example'>";
- test_content += " <p>CSS example:</p>";
- test_content += " <pre>p::first-line { text-transform: uppercase }</pre>";
- test_content += " <p>The above rule means 'change the letters of the first line of every";
- test_content += " paragraph to uppercase'.</p>";
- test_content += " </div>";
- test_content += " <p>The selector <code>p::first-line</code> does not match any real";
- test_content += " agents will insert at the beginning of every paragraph.</p>";
- test_content += " <p>Note that the length of the first line depends on a number of";
- test_content += " an ordinary HTML paragraph such as:</p>";
- test_content += " <pre> <P>This is a somewhat long HTML ";
- test_content += " </pre>";
- test_content += " <p>the lines of which happen to be broken as follows:";
- test_content += " </p><pre> THIS IS A SOMEWHAT LONG HTML PARAGRAPH THAT";
- test_content += " </pre>";
- test_content += " <p>This paragraph might be 'rewritten' by user agents to include the";
- test_content += " <em>fictional tag sequence</em> for <code>::first-line</code>. This";
- test_content += " fictional tag sequence helps to show how properties are inherited.</p>";
- test_content += " <pre> <P><b><P::first-line></b> This is a somewhat long HTML ";
- test_content += " paragraph that <b></P::first-line></b> will be broken into several";
- test_content += " </pre>";
- test_content += " <p>If a pseudo-element breaks up a real element, the desired effect";
- test_content += " with a <code>span</code> element:</p>";
- test_content += " <pre> <P><b><SPAN class='test'></b> This is a somewhat long HTML";
- test_content += " lines.<b></SPAN></b> The first line will be identified";
- test_content += " </pre>";
- test_content += " <p>the user agent could simulate start and end tags for";
- test_content += " <code>span</code> when inserting the fictional tag sequence for";
- test_content += " <code>::first-line</code>.";
- test_content += " </p><pre> <P><P::first-line><b><SPAN class='test'></b> This is a";
- test_content += " paragraph that will <b></SPAN></b></P::first-line><b><SPAN";
- test_content += " class='test'></b> be";
- test_content += " lines.<b></SPAN></b> The first line will be identified";
- test_content += " </pre>";
- test_content += " <p>In CSS, the <code>::first-line</code> pseudo-element can only be";
- test_content += " or a table-cell.</p>";
- test_content += " <p><a name='first-formatted-line'></a>The 'first formatted line' of an";
- test_content += " line of the <code>div</code> in <code><DIV><P>This";
- test_content += " line...</P></DIV></code> is the first line of the <code>p</code>";
- test_content += " that both <code>p</code> and <code>div</code> are block-level).";
- test_content += " </p><p>The first line of a table-cell or inline-block cannot be the first";
- test_content += " formatted line of an ancestor element. Thus, in <code><DIV><P";
- test_content += " etcetera</DIV></code> the first formatted line of the";
- test_content += " <code>div</code> is not the line 'Hello'.";
- test_content += " </p><p class='note'>Note that the first line of the <code>p</code> in this";
- test_content += " fragment: <code><p><br>First...</code> doesn't contain any";
- test_content += " letters (assuming the default style for <code>br</code> in HTML";
- test_content += " </p><p>A UA should act as if the fictional start tags of the";
- test_content += " <code>::first-line</code> pseudo-elements were nested just inside the";
- test_content += " is an example. The fictional tag sequence for</p>";
- test_content += " <pre> <DIV>";
- test_content += " </pre>";
- test_content += " <p>is</p>";
- test_content += " <pre> <DIV>";
- test_content += " </pre>";
- test_content += " <p>The <code>::first-line</code> pseudo-element is similar to an";
- test_content += " following properties apply to a <code>::first-line</code>";
- test_content += " properties as well.</p>";
- test_content += " <h4><a name='first-letter'>7.2. The ::first-letter pseudo-element</a></h4>";
- test_content += " <p>The <code>::first-letter</code> pseudo-element represents the first";
- test_content += " is 'none'; otherwise, it is similar to a floated element.</p>";
- test_content += " <p>In CSS, these are the properties that apply to <code>::first-letter</code>";
- test_content += " of the letter, unlike for normal elements.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Example:</p>";
- test_content += " <p>This example shows a possible rendering of an initial cap. Note";
- test_content += " <code>::first-letter</code>";
- test_content += " fictional start tag of the first letter is inside the <span>span</span>,";
- test_content += " the font weight of the first letter is normal, not bold as the <span>span</span>:";
- test_content += " </p><pre> p { line-height: 1.1 }";
- test_content += " </pre>";
- test_content += " <div class='figure'>";
- test_content += " <p><img src='' alt='Image illustrating the ::first-letter pseudo-element'>";
- test_content += " </p></div>";
- test_content += " </div>";
- test_content += " <div class='example'>";
- test_content += " <p>The following CSS will make a drop cap initial letter span about two";
- test_content += " lines:</p>";
- test_content += " <pre> <!DOCTYPE HTML PUBLIC '-//W3C//DTD HTML 4.01//EN'>";
- test_content += " </pre>";
- test_content += " <p>This example might be formatted as follows:</p>";
- test_content += " <div class='figure'>";
- test_content += " <p><img src='' alt='Image illustrating the combined effect of the ::first-letter and ::first-line pseudo-elements'>";
- test_content += " </p>";
- test_content += " </div>";
- test_content += " <p>The <span class='index-inst' title='fictional tag";
- test_content += " sequence'>fictional tag sequence</span> is:</p>";
- test_content += " <pre> <P>";
- test_content += " </pre>";
- test_content += " <p>Note that the <code>::first-letter</code> pseudo-element tags abut";
- test_content += " block element.</p></div>";
- test_content += " <p>In order to achieve traditional drop caps formatting, user agents";
- test_content += " glyph outline may be taken into account when formatting.</p>";
- test_content += " <p>Punctuation (i.e, characters defined in Unicode in the 'open' (Ps),";
- test_content += " be included. <a href='#refsUNICODE'>[UNICODE]</a></p>";
- test_content += " <div class='figure'>";
- test_content += " <p><img src='' alt='Quotes that precede the";
- test_content += " first letter should be included.'></p>";
- test_content += " </div>";
- test_content += " <p>The <code>::first-letter</code> also applies if the first letter is";
- test_content += " money.'</p>";
- test_content += " <p>In CSS, the <code>::first-letter</code> pseudo-element applies to";
- test_content += " elements. <span class='note'>A future version of this specification";
- test_content += " types.</span></p>";
- test_content += " <p>The <code>::first-letter</code> pseudo-element can be used with all";
- test_content += " the element, even if that first text is in a descendant.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Example:</p>";
- test_content += " <p>The fictional tag sequence for this HTMLfragment:";
- test_content += " </p><pre><div>";
- test_content += " <p>The first text.</pre>";
- test_content += " <p>is:";
- test_content += " </p><pre><div>";
- test_content += " <p><div::first-letter><p::first-letter>T</...></...>he first text.</pre>";
- test_content += " </div>";
- test_content += " <p>The first letter of a table-cell or inline-block cannot be the";
- test_content += " first letter of an ancestor element. Thus, in <code><DIV><P";
- test_content += " etcetera</DIV></code> the first letter of the <code>div</code> is";
- test_content += " letter 'H'. In fact, the <code>div</code> doesn't have a first letter.";
- test_content += " </p><p>The first letter must occur on the <a href='#first-formatted-line'>first formatted line.</a> For example, in";
- test_content += " this fragment: <code><p><br>First...</code> the first line";
- test_content += " doesn't contain any letters and <code>::first-letter</code> doesn't";
- test_content += " match anything (assuming the default style for <code>br</code> in HTML";
- test_content += " </p><p>In CSS, if an element is a list item ('display: list-item'), the";
- test_content += " <code>::first-letter</code> applies to the first letter in the";
- test_content += " <code>::first-letter</code> on list items with 'list-style-position:";
- test_content += " inside'. If an element has <code>::before</code> or";
- test_content += " <code>::after</code> content, the <code>::first-letter</code> applies";
- test_content += " to the first letter of the element <em>including</em> that content.";
- test_content += " </p><div class='example'>";
- test_content += " <p>Example:</p>";
- test_content += " <p>After the rule 'p::before {content: 'Note: '}', the selector";
- test_content += " 'p::first-letter' matches the 'N' of 'Note'.</p>";
- test_content += " </div>";
- test_content += " <p>Some languages may have specific rules about how to treat certain";
- test_content += " considered within the <code>::first-letter</code> pseudo-element.";
- test_content += " </p><p>If the letters that would form the ::first-letter are not in the";
- test_content += " same element, such as ''T' in <code><p>'<em>T...</code>, the UA";
- test_content += " both elements, or simply not create a pseudo-element.</p>";
- test_content += " <p>Similarly, if the first letter(s) of the block are not at the start";
- test_content += " </p><div class='example'>";
- test_content += " <p>Example:</p>";
- test_content += " <p><a name='overlapping-example'>The following example</a> illustrates";
- test_content += " paragraph will be 'red'.</p>";
- test_content += " <pre>p { color: red; font-size: 12pt }";
- test_content += " <P>Some text that ends up on two lines</P></pre>";
- test_content += " <p>Assuming that a line break will occur before the word 'ends', the";
- test_content += " <span class='index-inst' title='fictional tag sequence'>fictional tag";
- test_content += " sequence</span> for this fragment might be:</p>";
- test_content += " <pre><P>";
- test_content += " </P></pre>";
- test_content += " <p>Note that the <code>::first-letter</code> element is inside the <code>::first-line</code>";
- test_content += " element. Properties set on <code>::first-line</code> are inherited by";
- test_content += " <code>::first-letter</code>, but are overridden if the same property is";
- test_content += " <code>::first-letter</code>.</p>";
- test_content += " </div>";
- test_content += " <h4><a name='UIfragments'>7.3.</a> <a name='selection'>The ::selection";
- test_content += " pseudo-element</a></h4>";
- test_content += " <p>The <code>::selection</code> pseudo-element applies to the portion";
- test_content += " field. This pseudo-element should not be confused with the <code><a href='#checked'>:checked</a></code> pseudo-class (which used to be";
- test_content += " named <code>:selected</code>)";
- test_content += " </p><p>Although the <code>::selection</code> pseudo-element is dynamic in";
- test_content += " <a href='#refsCSS21'>[CSS21]</a>) which was originally rendered to a";
- test_content += " <code>::selection</code> state to that other medium, and have all the";
- test_content += " required — UAs may omit the <code>::selection</code>";
- test_content += " </p><p>These are the CSS properties that apply to <code>::selection</code>";
- test_content += " <code>::selection</code> may be ignored.";
- test_content += " </p><h4><a name='gen-content'>7.4. The ::before and ::after pseudo-elements</a></h4>";
- test_content += " <p>The <code>::before</code> and <code>::after</code> pseudo-elements";
- test_content += " content. They are explained in CSS 2.1 <a href='#refsCSS21'>[CSS21]</a>.</p>";
- test_content += " <p>When the <code>::first-letter</code> and <code>::first-line</code>";
- test_content += " pseudo-elements are combined with <code>::before</code> and";
- test_content += " <code>::after</code>, they apply to the first letter or line of the";
- test_content += " element including the inserted text.</p>";
- test_content += " <h2><a name='combinators'>8. Combinators</a></h2>";
- test_content += " <h3><a name='descendant-combinators'>8.1. Descendant combinator</a></h3>";
- test_content += " <p>At times, authors may want selectors to describe an element that is";
- test_content += " <code>EM</code> element that is contained within an <code>H1</code>";
- test_content += " descendant combinator is <a href='#whitespace'>white space</a> that";
- test_content += " separates two sequences of simple selectors. A selector of the form";
- test_content += " '<code>A B</code>' represents an element <code>B</code> that is an";
- test_content += " arbitrary descendant of some ancestor element <code>A</code>.";
- test_content += " </p><div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <p>For example, consider the following selector:</p>";
- test_content += " <pre>h1 em</pre>";
- test_content += " <p>It represents an <code>em</code> element being the descendant of";
- test_content += " an <code>h1</code> element. It is a correct and valid, but partial,";
- test_content += " description of the following fragment:</p>";
- test_content += " <pre><h1>This <span class='myclass'>headline";
- test_content += " is <em>very</em> important</span></h1></pre>";
- test_content += " <p>The following selector:</p>";
- test_content += " <pre>div * p</pre>";
- test_content += " <p>represents a <code>p</code> element that is a grandchild or later";
- test_content += " descendant of a <code>div</code> element. Note the whitespace on";
- test_content += " of the P.</p>";
- test_content += " <p>The following selector, which combines descendant combinators and";
- test_content += " <a href='#attribute-selectors'>attribute selectors</a>, represents an";
- test_content += " element that (1) has the <code>href</code> attribute set and (2) is";
- test_content += " inside a <code>p</code> that is itself inside a <code>div</code>:</p>";
- test_content += " <pre>div p *[href]</pre>";
- test_content += " </div>";
- test_content += " <h3><a name='child-combinators'>8.2. Child combinators</a></h3>";
- test_content += " <p>A <dfn>child combinator</dfn> describes a childhood relationship";
- test_content += " 'greater-than sign' (<code>></code>) character and";
- test_content += " separates two sequences of simple selectors.";
- test_content += " </p><div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <p>The following selector represents a <code>p</code> element that is";
- test_content += " child of <code>body</code>:</p>";
- test_content += " <pre>body > p</pre>";
- test_content += " <p>The following example combines descendant combinators and child";
- test_content += " combinators.</p>";
- test_content += " <pre>div ol>li p</pre>";
- test_content += " <!-- LEAVE THOSE SPACES OUT! see below -->";
- test_content += " <p>It represents a <code>p</code> element that is a descendant of an";
- test_content += " <code>li</code> element; the <code>li</code> element must be the";
- test_content += " child of an <code>ol</code> element; the <code>ol</code> element must";
- test_content += " be a descendant of a <code>div</code>. Notice that the optional white";
- test_content += " space around the '>' combinator has been left out.</p>";
- test_content += " </div>";
- test_content += " <p>For information on selecting the first child of an element, please";
- test_content += " see the section on the <code><a href='#structural-pseudos'>:first-child</a></code> pseudo-class";
- test_content += " above.</p>";
- test_content += " <h3><a name='sibling-combinators'>8.3. Sibling combinators</a></h3>";
- test_content += " <p>There are two different sibling combinators: the adjacent sibling";
- test_content += " considering adjacency of elements.</p>";
- test_content += " <h4><a name='adjacent-sibling-combinators'>8.3.1. Adjacent sibling combinator</a>";
- test_content += " </h4>";
- test_content += " <p>The adjacent sibling combinator is made of the 'plus";
- test_content += " sign' (U+002B, <code>+</code>) character that separates two";
- test_content += " sequences of simple selectors. The elements represented by the two";
- test_content += " represented by the second one.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <p>The following selector represents a <code>p</code> element";
- test_content += " immediately following a <code>math</code> element:</p>";
- test_content += " <pre>math + p</pre>";
- test_content += " <p>The following selector is conceptually similar to the one in the";
- test_content += " adds a constraint to the <code>h1</code> element, that it must have";
- test_content += " <code>class='opener'</code>:</p>";
- test_content += " <pre>h1.opener + h2</pre>";
- test_content += " </div>";
- test_content += " <h4><a name='general-sibling-combinators'>8.3.2. General sibling combinator</a>";
- test_content += " </h4>";
- test_content += " <p>The general sibling combinator is made of the 'tilde'";
- test_content += " (U+007E, <code>~</code>) character that separates two sequences of";
- test_content += " simple selectors. The elements represented by the two sequences share";
- test_content += " represented by the second one.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Example:</p>";
- test_content += " <pre>h1 ~ pre</pre>";
- test_content += " <p>represents a <code>pre</code> element following an <code>h1</code>. It";
- test_content += " is a correct and valid, but partial, description of:</p>";
- test_content += " <pre><h1>Definition of the function a</h1>";
- test_content += " <pre>function a(x) = 12x/13.5</pre></pre>";
- test_content += " </div>";
- test_content += " <h2><a name='specificity'>9. Calculating a selector's specificity</a></h2>";
- test_content += " <p>A selector's specificity is calculated as follows:</p>";
- test_content += " <ul>";
- test_content += " <li>count the number of ID selectors in the selector (= a)</li>";
- test_content += " <li>count the number of class selectors, attributes selectors, and";
- test_content += " </li>";
- test_content += " <li>count the number of element names in the selector (= c)</li>";
- test_content += " <li>ignore pseudo-elements</li>";
- test_content += " </ul>";
- test_content += " <p>Selectors inside <a href='#negation'>the negation pseudo-class</a>";
- test_content += " a pseudo-class.</p>";
- test_content += " <p>Concatenating the three numbers a-b-c (in a number system with a";
- test_content += " large base) gives the specificity.</p>";
- test_content += " <div class='example'>";
- test_content += " <p>Examples:</p>";
- test_content += " <pre>* /* a=0 b=0 c=0 -> specificity = 0 */";
- test_content += " </pre>";
- test_content += " </div>";
- test_content += " <p class='note'><strong>Note:</strong> the specificity of the styles";
- test_content += " specified in an HTML <code>style</code> attribute is described in CSS";
- test_content += " 2.1. <a href='#refsCSS21'>[CSS21]</a>.</p>";
- test_content += " <h2><a name='w3cselgrammar'>10. The grammar of Selectors</a></h2>";
- test_content += " <h3><a name='grammar'>10.1. Grammar</a></h3>";
- test_content += " <p>The grammar below defines the syntax of Selectors. It is globally";
- test_content += " shorthand notations beyond Yacc (see <a href='#refsYACC'>[YACC]</a>)";
- test_content += " are used:</p>";
- test_content += " <ul>";
- test_content += " <li><b>*</b>: 0 or more";
- test_content += " </li><li><b>+</b>: 1 or more";
- test_content += " </li><li><b>?</b>: 0 or 1";
- test_content += " </li><li><b>|</b>: separates alternatives";
- test_content += " </li><li><b>[ ]</b>: grouping</li>";
- test_content += " </ul>";
- test_content += " <p>The productions are:</p>";
- test_content += " <pre>selectors_group";
- test_content += " ;</pre>";
- test_content += " <h3><a name='lex'>10.2. Lexical scanner</a></h3>";
- test_content += " <p>The following is the <a name='x3'>tokenizer</a>, written in Flex (see";
- test_content += " <a href='#refsFLEX'>[FLEX]</a>) notation. The tokenizer is";
- test_content += " case-insensitive.</p>";
- test_content += " <p>The two occurrences of '\377' represent the highest character";
- test_content += " possible code point in Unicode/ISO-10646. <a href='#refsUNICODE'>[UNICODE]</a></p>";
- test_content += " <pre>%option case-insensitive";
- test_content += " . return *yytext;</pre>";
- test_content += " <h2><a name='downlevel'>11. Namespaces and down-level clients</a></h2>";
- test_content += " <p>An important issue is the interaction of CSS selectors with XML";
- test_content += " to construct a CSS style sheet which will properly match selectors in";
- test_content += " is possible to construct a style sheet in which selectors would match";
- test_content += " elements and attributes correctly.</p>";
- test_content += " <p>It should be noted that a down-level CSS client will (if it";
- test_content += " <code>@namespace</code> at-rules, as well as all style rules that make";
- test_content += " use of namespace qualified element type or attribute selectors. The";
- test_content += " than possibly match them incorrectly.</p>";
- test_content += " <p>The use of default namespaces in CSS makes it possible to write";
- test_content += " element type selectors that will function in both namespace aware CSS";
- test_content += " down-level clients may incorrectly match selectors against XML";
- test_content += " elements in other namespaces.</p>";
- test_content += " <p>The following are scenarios and examples in which it is possible to";
- test_content += " that do not implement this proposal.</p>";
- test_content += " <ol>";
- test_content += " <li>";
- test_content += " <p>The XML document does not use namespaces.</p>";
- test_content += " <ul>";
- test_content += " <li>In this case, it is obviously not necessary to declare or use";
- test_content += " attribute selectors will function adequately in a down-level";
- test_content += " </li>";
- test_content += " <li>In a CSS namespace aware client, the default behavior of";
- test_content += " element selectors matching without regard to namespace will";
- test_content += " present. However, the use of specific element type selectors";
- test_content += " match only elements that have no namespace ('<code>|name</code>')";
- test_content += " will guarantee that selectors will match only XML elements that";
- test_content += " </li>";
- test_content += " </ul>";
- test_content += " </li>";
- test_content += " <li>";
- test_content += " <p>The XML document defines a single, default namespace used";
- test_content += " names.</p>";
- test_content += " <ul>";
- test_content += " <li>In this case, a down-level client will function as if";
- test_content += " element type and attribute selectors will match against all";
- test_content += " </li>";
- test_content += " </ul>";
- test_content += " </li>";
- test_content += " <li>";
- test_content += " <p>The XML document does <b>not</b> use a default namespace, all";
- test_content += " to the same URI).</p>";
- test_content += " <ul>";
- test_content += " <li>In this case, the down-level client will view and match";
- test_content += " element type and attribute selectors based on their fully";
- test_content += " qualified name, not the local part as outlined in the <a href='#typenmsp'>Type selectors and Namespaces</a>";
- test_content += " selectors may be declared using an escaped colon";
- test_content += " '<code>\\:</code>'";
- test_content += " '<code>html\\:h1</code>' will match";
- test_content += " <code><html:h1></code>. Selectors using the qualified name";
- test_content += " </li>";
- test_content += " <li>Note that selectors declared in this fashion will";
- test_content += " <em>only</em> match in down-level clients. A CSS namespace aware";
- test_content += " client will match element type and attribute selectors based on";
- test_content += " the name's local part. Selectors declared with the fully";
- test_content += " </li>";
- test_content += " </ul>";
- test_content += " </li>";
- test_content += " </ol>";
- test_content += " <p>In other scenarios: when the namespace prefixes used in the XML are";
- test_content += " <em>different</em> namespace URIs within the same document, or in";
- test_content += " a CSS and XML namespace aware client.</p>";
- test_content += " <h2><a name='profiling'>12. Profiles</a></h2>";
- test_content += " <p>Each specification using Selectors must define the subset of W3C";
- test_content += " Selectors it allows and excludes, and describe the local meaning of";
- test_content += " all the components of that subset.</p>";
- test_content += " <p>Non normative examples:";
- test_content += " </p><div class='profile'>";
- test_content += " <table class='tprofile'>";
- test_content += " <tbody>";
- test_content += " <tr>";
- test_content += " <th class='title' colspan='2'>Selectors profile</th>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <th>Specification</th>";
- test_content += " <td>CSS level 1</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <th>Accepts</th>";
- test_content += " <td>type selectors<br>class selectors<br>ID selectors<br>:link,";
- test_content += " :visited and :active pseudo-classes<br>descendant combinator";
- test_content += " <br>::first-line and ::first-letter pseudo-elements";
- test_content += " </td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <th>Excludes</th>";
- test_content += " <td>";
- test_content += " <p>universal selector<br>attribute selectors<br>:hover and";
- test_content += " pseudo-classes<br>:target pseudo-class<br>:lang()";
- test_content += " pseudo-class<br>all UI";
- test_content += " element states pseudo-classes<br>all structural";
- test_content += " pseudo-classes<br>negation pseudo-class<br>all";
- test_content += " UI element fragments pseudo-elements<br>::before and ::after";
- test_content += " pseudo-elements<br>child combinators<br>sibling combinators";
- test_content += " </p><p>namespaces</p></td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <th>Extra constraints</th>";
- test_content += " <td>only one class selector allowed per sequence of simple";
- test_content += " selectors";
- test_content += " </td>";
- test_content += " </tr>";
- test_content += " </tbody>";
- test_content += " </table>";
- test_content += " <br><br>";
- test_content += " <table class='tprofile'>";
- test_content += " <tbody>";
- test_content += " <tr>";
- test_content += " <th class='title' colspan='2'>Selectors profile</th>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <th>Specification</th>";
- test_content += " <td>CSS level 2</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <th>Accepts</th>";
- test_content += " <td>type selectors<br>universal selector<br>attribute presence and";
- test_content += " values selectors<br>class selectors<br>ID selectors<br>:link,";
- test_content += " <br>descendant combinator<br>child combinator<br>adjacent";
- test_content += " combinator<br>::first-line and ::first-letter";
- test_content += " pseudo-elements<br>::before";
- test_content += " </td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <th>Excludes</th>";
- test_content += " <td>";
- test_content += " <p>content selectors<br>substring matching attribute";
- test_content += " selectors<br>:target pseudo-classes<br>all UI element";
- test_content += " states pseudo-classes<br>all structural pseudo-classes other";
- test_content += " than :first-child<br>negation pseudo-class<br>all UI element";
- test_content += " fragments pseudo-elements<br>general sibling combinators";
- test_content += " </p><p>namespaces</p></td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <th>Extra constraints</th>";
- test_content += " <td>more than one class selector per sequence of simple selectors";
- test_content += " </td>";
- test_content += " </tr>";
- test_content += " </tbody>";
- test_content += " </table>";
- test_content += " <p>In CSS, selectors express pattern matching rules that determine which";
- test_content += " </p><p>The following selector (CSS level 2) will <b>match</b> all anchors <code>a</code>";
- test_content += " with attribute <code>name</code> set inside a section 1 header";
- test_content += " <code>h1</code>:";
- test_content += " </p><pre>h1 a[name]</pre>";
- test_content += " <p>All CSS declarations attached to such a selector are applied to elements";
- test_content += " matching it.</p></div>";
- test_content += " <div class='profile'>";
- test_content += " <table class='tprofile'>";
- test_content += " <tbody>";
- test_content += " <tr>";
- test_content += " <th class='title' colspan='2'>Selectors profile</th>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <th>Specification</th>";
- test_content += " <td>STTS 3</td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <th>Accepts</th>";
- test_content += " <td>";
- test_content += " <p>type selectors<br>universal selectors<br>attribute";
- test_content += " selectors<br>class";
- test_content += " selectors<br>ID selectors<br>all structural";
- test_content += " pseudo-classes<br>";
- test_content += " </p><p>namespaces</p></td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <th>Excludes</th>";
- test_content += " <td>non-accepted pseudo-classes<br>pseudo-elements<br></td>";
- test_content += " </tr>";
- test_content += " <tr>";
- test_content += " <th>Extra constraints</th>";
- test_content += " <td>some selectors and combinators are not allowed in fragment";
- test_content += " </td>";
- test_content += " </tr>";
- test_content += " </tbody>";
- test_content += " </table>";
- test_content += " <p>Selectors can be used in STTS 3 in two different";
- test_content += " </p><ol>";
- test_content += " <li>a selection mechanism equivalent to CSS selection mechanism:";
- test_content += " </li><li>fragment descriptions that appear on the right side of declarations.";
- test_content += " </li>";
- test_content += " </ol>";
- test_content += " </div>";
- test_content += " <h2><a name='Conformance'></a>13. Conformance and requirements</h2>";
- test_content += " <p>This section defines conformance with the present specification only.";
- test_content += " </p><p>The inability of a user agent to implement part of this specification due to";
- test_content += " </p><p>All specifications reusing Selectors must contain a <a href='#profiling'>Profile</a> listing the";
- test_content += " subset of Selectors it accepts or excludes, and describing the constraints";
- test_content += " </p><p>Invalidity is caused by a parsing error, e.g. an unrecognized token or a";
- test_content += " </p><p>User agents must observe the rules for handling parsing errors:";
- test_content += " </p><ul>";
- test_content += " <li>a simple selector containing an undeclared namespace prefix is invalid";
- test_content += " </li>";
- test_content += " <li>a selector containing an invalid simple selector, an invalid combinator";
- test_content += " </li>";
- test_content += " <li>a group of selectors containing an invalid selector is invalid.</li>";
- test_content += " </ul>";
- test_content += " <p>Specifications reusing Selectors must define how to handle parsing";
- test_content += " used is dropped.)</p>";
- test_content += " <!-- Apparently all these references are out of date:";
- test_content += " <p>Implementations of this specification must behave as";
- test_content += " 'recipients of text data' as defined by <a href='#refsCWWW'>[CWWW]</a>";
- test_content += " when parsing selectors and attempting matches. (In particular,";
- test_content += " <a href='#refsCWWW'>[CWWW]</a> and <a";
- test_content += " href='#refsUNICODE'>[UNICODE]</a> and apply to implementations of this";
- test_content += " specification.</p>-->";
- test_content += " <h2><a name='Tests'></a>14. Tests</h2>";
- test_content += " <p>This specification has <a href='http://www.w3.org/Style/CSS/Test/CSS3/Selectors/current/'>a test";
- test_content += " suite</a> allowing user agents to verify their basic conformance to";
- test_content += " and does not cover all possible combined cases of Selectors.</p>";
- test_content += " <h2><a name='ACKS'></a>15. Acknowledgements</h2>";
- test_content += " <p>The CSS working group would like to thank everyone who has sent";
- test_content += " comments on this specification over the years.</p>";
- test_content += " <p>The working group would like to extend special thanks to Donna";
- test_content += " the final editorial review.</p>";
- test_content += " <h2><a name='references'>16. References</a></h2>";
- test_content += " <dl class='refs'>";
- test_content += " <dt>[CSS1]";
- test_content += " </dt><dd><a name='refsCSS1'></a> Bert Bos, Håkon Wium Lie; '<cite>Cascading";
- test_content += " Style Sheets, level 1</cite>', W3C Recommendation, 17 Dec 1996, revised";
- test_content += " </dd><dd>(<code><a href='http://www.w3.org/TR/REC-CSS1'>http://www.w3.org/TR/REC-CSS1</a></code>)";
- test_content += " </dd><dt>[CSS21]";
- test_content += " </dt><dd><a name='refsCSS21'></a> Bert Bos, Tantek Çelik, Ian Hickson, Håkon";
- test_content += " Wium Lie, editors; '<cite>Cascading Style Sheets, level 2 revision";
- test_content += " 1</cite>', W3C Working Draft, 13 June 2005";
- test_content += " </dd><dd>(<code><a href='http://www.w3.org/TR/CSS21'>http://www.w3.org/TR/CSS21</a></code>)";
- test_content += " </dd><dt>[CWWW]";
- test_content += " </dt><dd><a name='refsCWWW'></a> Martin J. Dürst, François Yergeau,";
- test_content += " Misha Wolf, Asmus Freytag, Tex Texin, editors; '<cite>Character Model";
- test_content += " for the World Wide Web</cite>', W3C Recommendation, 15 February 2005";
- test_content += " </dd><dd>(<code><a href='http://www.w3.org/TR/charmod/'>http://www.w3.org/TR/charmod/</a></code>)";
- test_content += " </dd><dt>[FLEX]";
- test_content += " </dt><dd><a name='refsFLEX'></a> '<cite>Flex: The Lexical Scanner";
- test_content += " Generator</cite>', Version 2.3.7, ISBN 1882114213";
- test_content += " </dd><dt>[HTML4]";
- test_content += " </dt><dd><a name='refsHTML4'></a> Dave Ragget, Arnaud Le Hors, Ian Jacobs,";
- test_content += " editors; '<cite>HTML 4.01 Specification</cite>', W3C Recommendation, 24";
- test_content += " </dd><dd>";
- test_content += " (<a href='http://www.w3.org/TR/html4/'><code>http://www.w3.org/TR/html4/</code></a>)";
- test_content += " </dd><dt>[MATH]";
- test_content += " </dt><dd><a name='refsMATH'></a> Patrick Ion, Robert Miner, editors; '<cite>Mathematical";
- test_content += " Markup Language (MathML) 1.01</cite>', W3C Recommendation, revision of 7";
- test_content += " </dd><dd>(<code><a href='http://www.w3.org/TR/REC-MathML/'>http://www.w3.org/TR/REC-MathML/</a></code>)";
- test_content += " </dd><dt>[RFC3066]";
- test_content += " </dt><dd><a name='refsRFC3066'></a> H. Alvestrand; '<cite>Tags for the";
- test_content += " Identification of Languages</cite>', Request for Comments 3066, January";
- test_content += " </dd><dd>(<a href='http://www.ietf.org/rfc/rfc3066.txt'><code>http://www.ietf.org/rfc/rfc3066.txt</code></a>)";
- test_content += " </dd><dt>[STTS]";
- test_content += " </dt><dd><a name='refsSTTS'></a> Daniel Glazman; '<cite>Simple Tree Transformation";
- test_content += " Sheets 3</cite>', Electricité de France, submission to the W3C,";
- test_content += " </dd><dd>(<code><a href='http://www.w3.org/TR/NOTE-STTS3'>http://www.w3.org/TR/NOTE-STTS3</a></code>)";
- test_content += " </dd><dt>[SVG]";
- test_content += " </dt><dd><a name='refsSVG'></a> Jon Ferraiolo, 藤沢 淳, Dean";
- test_content += " Jackson, editors; '<cite>Scalable Vector Graphics (SVG) 1.1";
- test_content += " Specification</cite>', W3C Recommendation, 14 January 2003";
- test_content += " </dd><dd>(<code><a href='http://www.w3.org/TR/SVG/'>http://www.w3.org/TR/SVG/</a></code>)";
- test_content += " </dd><dt>[UNICODE]</dt>";
- test_content += " <dd><a name='refsUNICODE'></a> <cite><a href='http://www.unicode.org/versions/Unicode4.1.0/'>The Unicode";
- test_content += " Standard, Version 4.1</a></cite>, The Unicode Consortium. Boston, MA,";
- test_content += " Addison-Wesley, March 2005. ISBN 0-321-18578-1, as amended by <a href='http://www.unicode.org/versions/Unicode4.0.1/'>Unicode";
- test_content += " 4.0.1</a> and <a href='http://www.unicode.org/versions/Unicode4.1.0/'>Unicode";
- test_content += " 4.1.0</a>.";
- test_content += " </dd><dd>(<code><a href='http://www.unicode.org/versions/'>http://www.unicode.org/versions/</a></code>)";
- test_content += " </dd>";
- test_content += " <dt>[XML10]";
- test_content += " </dt><dd><a name='refsXML10'></a> Tim Bray, Jean Paoli, C. M. Sperberg-McQueen,";
- test_content += " Eve Maler, François Yergeau, editors; '<cite>Extensible Markup";
- test_content += " Language (XML) 1.0 (Third Edition)</cite>', W3C Recommendation, 4";
- test_content += " </dd><dd>(<a href='http://www.w3.org/TR/REC-xml/'><code>http://www.w3.org/TR/REC-xml/</code></a>)";
- test_content += " </dd><dt>[XMLNAMES]";
- test_content += " </dt><dd><a name='refsXMLNAMES'></a> Tim Bray, Dave Hollander, Andrew Layman,";
- test_content += " editors; '<cite>Namespaces in XML</cite>', W3C Recommendation, 14";
- test_content += " </dd><dd>(<a href='http://www.w3.org/TR/REC-xml-names/'><code>http://www.w3.org/TR/REC-xml-names/</code></a>)";
- test_content += " </dd><dt>[YACC]";
- test_content += " </dt><dd><a name='refsYACC'></a> S. C. Johnson; '<cite>YACC — Yet another";
- test_content += " compiler compiler</cite>', Technical Report, Murray Hill, 1975";
- test_content += " </dd></dl>'; </div>";
- test_content += " <input name='n' value='v1' type='radio'>1";
- test_content += " <input name='n' value='v2' checked='checked' type='radio'>2";
- test_content += "</body></html>";
- return test_content;
+ String ret = "";
+ ret += "<html><head> </head><body><div>";
+ ret += " <div class='head dialog'>";
+ ret += " <p><a href='http://www.w3.org/'><img alt='W3C' src='' height='48' width='72'></a></p>";
+ ret += " <h1 id='title'>Selectors</h1>";
+ ret += " <em><span>.</span></em>";
+ ret += " <h2>W3C Working Draft 15 December 2005</h2>";
+ ret += " <dl>";
+ ret += " <dt>This version:</dt>";
+ ret += " <dd><a href='http://www.w3.org/TR/2005/WD-css3-selectors-20051215'>";
+ ret += " http://www.w3.org/TR/2005/WD-css3-selectors-20051215</a></dd>";
+ ret += " <dt>Latest version:";
+ ret += " </dt><dd><a href='http://www.w3.org/TR/css3-selectors'>";
+ ret += " http://www.w3.org/TR/css3-selectors</a>";
+ ret += " </dd><dt>Previous version:";
+ ret += " </dt><dd><a href='http://www.w3.org/TR/2001/CR-css3-selectors-20011113'>";
+ ret += " http://www.w3.org/TR/2001/CR-css3-selectors-20011113</a>";
+ ret += " </dd><dt><a name='editors-list'></a>Editors:";
+ ret += " </dt><dd class='vcard'><span class='fn'>Daniel Glazman</span> (Invited";
+ ret += " </dd>";
+ ret += " <dd class='vcard'><a class='url fn' href='http://www.tantek.com/' lang='tr'>Tantek Çelik</a>";
+ ret += " </dd><dd class='vcard'><a href='mailto:ian@hixie.ch' class='url fn'>Ian";
+ ret += " Hickson</a> (<span class='company'><a href='http://www.google.com/'>Google</a></span>)";
+ ret += " </dd><dd class='vcard'><span class='fn'>Peter Linss</span> (former";
+ ret += " editor, <span class='company'><a href='http://www.netscape.com/'>Netscape/AOL</a></span>)";
+ ret += " </dd><dd class='vcard'><span class='fn'>John Williams</span> (former editor, <span class='company'><a href='http://www.quark.com/'>Quark, Inc.</a></span>)";
+ ret += " </dd></dl>";
+ ret += " <p class='copyright'><a href='http://www.w3.org/Consortium/Legal/ipr-notice#Copyright'>";
+ ret += " Copyright</a> © 2005 <a href='http://www.w3.org/'><abbr title='World Wide Web Consortium'>W3C</abbr></a><sup>®</sup>";
+ ret += " (<a href='http://www.csail.mit.edu/'><abbr title='Massachusetts";
+ ret += " Institute of Technology'>MIT</abbr></a>, <a href='http://www.ercim.org/'><acronym title='European Research";
+ ret += " Consortium for Informatics and Mathematics'>ERCIM</acronym></a>, <a href='http://www.keio.ac.jp/'>Keio</a>), All Rights Reserved.";
+ ret += " <a href='http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer'>liability</a>,";
+ ret += " <a href='http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks'>trademark</a>,";
+ ret += " <a href='http://www.w3.org/Consortium/Legal/copyright-documents'>document";
+ ret += " use</a> rules apply.";
+ ret += " </p><hr title='Separator for header'>";
+ ret += " </div>";
+ ret += " <h2><a name='abstract'></a>Abstract</h2>";
+ ret += " <p><em>Selectors</em> are patterns that match against elements in a";
+ ret += " tree. Selectors have been optimized for use with HTML and XML, and";
+ ret += " are designed to be usable in performance-critical code.</p>";
+ ret += " <p><acronym title='Cascading Style Sheets'>CSS</acronym> (Cascading";
+ ret += " Style Sheets) is a language for describing the rendering of <acronym title='Hypertext Markup Language'>HTML</acronym> and <acronym title='Extensible Markup Language'>XML</acronym> documents on";
+ ret += " screen, on paper, in speech, etc. CSS uses Selectors for binding";
+ ret += " describes extensions to the selectors defined in CSS level 2. These";
+ ret += " extended selectors will be used by CSS level 3.";
+ ret += " </p><p>Selectors define the following function:</p>";
+ ret += " <pre>expression ∗ element → boolean</pre>";
+ ret += " <p>That is, given an element and a selector, this specification";
+ ret += " defines whether that element matches the selector.</p>";
+ ret += " <p>These expressions can also be used, for instance, to select a set";
+ ret += " subtree. <acronym title='Simple Tree Transformation";
+ ret += " Sheets'>STTS</acronym> (Simple Tree Transformation Sheets), a";
+ ret += " language for transforming XML trees, uses this mechanism. <a href='#refsSTTS'>[STTS]</a></p>";
+ ret += " <h2><a name='status'></a>Status of this document</h2>";
+ ret += " <p><em>This section describes the status of this document at the";
+ ret += " of this technical report can be found in the <a href='http://www.w3.org/TR/'>W3C technical reports index at";
+ ret += " http://www.w3.org/TR/.</a></em></p>";
+ ret += " <p>This document describes the selectors that already exist in <a href='#refsCSS1'><abbr title='CSS level 1'>CSS1</abbr></a> and <a href='#refsCSS21'><abbr title='CSS level 2'>CSS2</abbr></a>, and";
+ ret += " also proposes new selectors for <abbr title='CSS level";
+ ret += " 3'>CSS3</abbr> and other languages that may need them.</p>";
+ ret += " <p>The CSS Working Group doesn't expect that all implementations of";
+ ret += " CSS3 will have to implement all selectors. Instead, there will";
+ ret += " will include all of the selectors.</p>";
+ ret += " <p>This specification is a last call working draft for the the <a href='http://www.w3.org/Style/CSS/members'>CSS Working Group</a>";
+ ret += " (<a href='/Style/'>Style Activity</a>). This";
+ ret += " document is a revision of the <a href='http://www.w3.org/TR/2001/CR-css3-selectors-20011113/'>Candidate";
+ ret += " Recommendation dated 2001 November 13</a>, and has incorporated";
+ ret += " be demonstrable.</p>";
+ ret += " <p>All persons are encouraged to review and implement this";
+ ret += " specification and return comments to the (<a href='http://lists.w3.org/Archives/Public/www-style/'>archived</a>)";
+ ret += " public mailing list <a href='http://www.w3.org/Mail/Lists.html#www-style'>www-style</a>";
+ ret += " (see <a href='http://www.w3.org/Mail/Request'>instructions</a>). W3C";
+ ret += " The deadline for comments is 14 January 2006.</p>";
+ ret += " <p>This is still a draft document and may be updated, replaced, or";
+ ret += " </p><p>This document may be available in <a href='http://www.w3.org/Style/css3-selectors-updates/translations'>translation</a>.";
+ ret += " </p><div class='subtoc'>";
+ ret += " <h2><a name='contents'>Table of contents</a></h2>";
+ ret += " <ul class='toc'>";
+ ret += " <li class='tocline2'><a href='#context'>1. Introduction</a>";
+ ret += " <ul>";
+ ret += " <li><a href='#dependencies'>1.1. Dependencies</a></li>";
+ ret += " <li><a href='#terminology'>1.2. Terminology</a></li>";
+ ret += " <li><a href='#changesFromCSS2'>1.3. Changes from CSS2</a></li>";
+ ret += " </ul>";
+ ret += " </li><li class='tocline2'><a href='#selectors'>2. Selectors</a>";
+ ret += " </li><li class='tocline2'><a href='#casesens'>3. Case sensitivity</a>";
+ ret += " </li><li class='tocline2'><a href='#selector-syntax'>4. Selector syntax</a>";
+ ret += " </li><li class='tocline2'><a href='#grouping'>5. Groups of selectors</a>";
+ ret += " </li><li class='tocline2'><a href='#simple-selectors'>6. Simple selectors</a>";
+ ret += " <ul class='toc'>";
+ ret += " <li class='tocline3'><a href='#type-selectors'>6.1. Type";
+ ret += " selectors</a>";
+ ret += " <ul class='toc'>";
+ ret += " <li class='tocline4'><a href='#typenmsp'>6.1.1. Type";
+ ret += " selectors and namespaces</a></li>";
+ ret += " </ul>";
+ ret += " </li><li class='tocline3'><a href='#universal-selector'>6.2.";
+ ret += " Universal selector</a>";
+ ret += " <ul>";
+ ret += " <li><a href='#univnmsp'>6.2.1. Universal selector and";
+ ret += " namespaces</a></li>";
+ ret += " </ul>";
+ ret += " </li><li class='tocline3'><a href='#attribute-selectors'>6.3.";
+ ret += " Attribute selectors</a>";
+ ret += " <ul class='toc'>";
+ ret += " <li class='tocline4'><a href='#attribute-representation'>6.3.1.";
+ ret += " values</a>";
+ ret += " </li><li><a href='#attribute-substrings'>6.3.2. Substring";
+ ret += " matching attribute selectors</a>";
+ ret += " </li><li class='tocline4'><a href='#attrnmsp'>6.3.3.";
+ ret += " Attribute selectors and namespaces</a>";
+ ret += " </li><li class='tocline4'><a href='#def-values'>6.3.4.";
+ ret += " Default attribute values in DTDs</a></li>";
+ ret += " </ul>";
+ ret += " </li><li class='tocline3'><a href='#class-html'>6.4. Class";
+ ret += " selectors</a>";
+ ret += " </li><li class='tocline3'><a href='#id-selectors'>6.5. ID";
+ ret += " selectors</a>";
+ ret += " </li><li class='tocline3'><a href='#pseudo-classes'>6.6.";
+ ret += " Pseudo-classes</a>";
+ ret += " <ul class='toc'>";
+ ret += " <li class='tocline4'><a href='#dynamic-pseudos'>6.6.1.";
+ ret += " Dynamic pseudo-classes</a>";
+ ret += " </li><li class='tocline4'><a href='#target-pseudo'>6.6.2. The";
+ ret += " :target pseudo-class</a>";
+ ret += " </li><li class='tocline4'><a href='#lang-pseudo'>6.6.3. The";
+ ret += " :lang() pseudo-class</a>";
+ ret += " </li><li class='tocline4'><a href='#UIstates'>6.6.4. UI";
+ ret += " element states pseudo-classes</a>";
+ ret += " </li><li class='tocline4'><a href='#structural-pseudos'>6.6.5.";
+ ret += " Structural pseudo-classes</a>";
+ ret += " <ul>";
+ ret += " <li><a href='#root-pseudo'>:root";
+ ret += " pseudo-class</a>";
+ ret += " </li><li><a href='#nth-child-pseudo'>:nth-child()";
+ ret += " pseudo-class</a>";
+ ret += " </li><li><a href='#nth-last-child-pseudo'>:nth-last-child()</a>";
+ ret += " </li><li><a href='#nth-of-type-pseudo'>:nth-of-type()";
+ ret += " pseudo-class</a>";
+ ret += " </li><li><a href='#nth-last-of-type-pseudo'>:nth-last-of-type()</a>";
+ ret += " </li><li><a href='#first-child-pseudo'>:first-child";
+ ret += " pseudo-class</a>";
+ ret += " </li><li><a href='#last-child-pseudo'>:last-child";
+ ret += " pseudo-class</a>";
+ ret += " </li><li><a href='#first-of-type-pseudo'>:first-of-type";
+ ret += " pseudo-class</a>";
+ ret += " </li><li><a href='#last-of-type-pseudo'>:last-of-type";
+ ret += " pseudo-class</a>";
+ ret += " </li><li><a href='#only-child-pseudo'>:only-child";
+ ret += " pseudo-class</a>";
+ ret += " </li><li><a href='#only-of-type-pseudo'>:only-of-type";
+ ret += " pseudo-class</a>";
+ ret += " </li><li><a href='#empty-pseudo'>:empty";
+ ret += " pseudo-class</a></li>";
+ ret += " </ul>";
+ ret += " </li><li class='tocline4'><a href='#negation'>6.6.7. The";
+ ret += " negation pseudo-class</a></li>";
+ ret += " </ul>";
+ ret += " </li>";
+ ret += " </ul>";
+ ret += " </li><li><a href='#pseudo-elements'>7. Pseudo-elements</a>";
+ ret += " <ul>";
+ ret += " <li><a href='#first-line'>7.1. The ::first-line";
+ ret += " pseudo-element</a>";
+ ret += " </li><li><a href='#first-letter'>7.2. The ::first-letter";
+ ret += " pseudo-element</a>";
+ ret += " </li><li><a href='#UIfragments'>7.3. The ::selection";
+ ret += " pseudo-element</a>";
+ ret += " </li><li><a href='#gen-content'>7.4. The ::before and ::after";
+ ret += " pseudo-elements</a></li>";
+ ret += " </ul>";
+ ret += " </li><li class='tocline2'><a href='#combinators'>8. Combinators</a>";
+ ret += " <ul class='toc'>";
+ ret += " <li class='tocline3'><a href='#descendant-combinators'>8.1.";
+ ret += " Descendant combinators</a>";
+ ret += " </li><li class='tocline3'><a href='#child-combinators'>8.2. Child";
+ ret += " combinators</a>";
+ ret += " </li><li class='tocline3'><a href='#sibling-combinators'>8.3. Sibling";
+ ret += " combinators</a>";
+ ret += " <ul class='toc'>";
+ ret += " <li class='tocline4'><a href='#adjacent-sibling-combinators'>8.3.1.";
+ ret += " Adjacent sibling combinator</a>";
+ ret += " </li><li class='tocline4'><a href='#general-sibling-combinators'>8.3.2.";
+ ret += " General sibling combinator</a></li>";
+ ret += " </ul>";
+ ret += " </li>";
+ ret += " </ul>";
+ ret += " </li><li class='tocline2'><a href='#specificity'>9. Calculating a selector's";
+ ret += " specificity</a>";
+ ret += " </li><li class='tocline2'><a href='#w3cselgrammar'>10. The grammar of";
+ ret += " Selectors</a>";
+ ret += " <ul class='toc'>";
+ ret += " <li class='tocline3'><a href='#grammar'>10.1. Grammar</a>";
+ ret += " </li><li class='tocline3'><a href='#lex'>10.2. Lexical scanner</a>";
+ ret += " </li>";
+ ret += " </ul>";
+ ret += " </li><li class='tocline2'><a href='#downlevel'>11. Namespaces and down-level";
+ ret += " clients</a>";
+ ret += " </li><li class='tocline2'><a href='#profiling'>12. Profiles</a>";
+ ret += " </li><li><a href='#Conformance'>13. Conformance and requirements</a>";
+ ret += " </li><li><a href='#Tests'>14. Tests</a>";
+ ret += " </li><li><a href='#ACKS'>15. Acknowledgements</a>";
+ ret += " </li><li class='tocline2'><a href='#references'>16. References</a>";
+ ret += " </li></ul>";
+ ret += " </div>";
+ ret += " <h2><a name='context'>1. Introduction</a></h2>";
+ ret += " <h3><a name='dependencies'></a>1.1. Dependencies</h3>";
+ ret += " <p>Some features of this specification are specific to CSS, or have";
+ ret += " specification, these have been described in terms of CSS2.1. <a href='#refsCSS21'>[CSS21]</a></p>";
+ ret += " <h3><a name='terminology'></a>1.2. Terminology</h3>";
+ ret += " <p>All of the text of this specification is normative except";
+ ret += " non-normative.</p>";
+ ret += " <h3><a name='changesFromCSS2'></a>1.3. Changes from CSS2</h3>";
+ ret += " <p><em>This section is non-normative.</em></p>";
+ ret += " <p>The main differences between the selectors in CSS2 and those in";
+ ret += " Selectors are:";
+ ret += " </p><ul>";
+ ret += " <li>the list of basic definitions (selector, group of selectors,";
+ ret += " of simple selectors, and the term 'simple selector' is now used for";
+ ret += " </li>";
+ ret += " <li>an optional namespace component is now allowed in type element";
+ ret += " selectors, the universal selector and attribute selectors";
+ ret += " </li>";
+ ret += " <li>a <a href='#general-sibling-combinators'>new combinator</a> has been";
+ ret += " </li>";
+ ret += " <li>new simple selectors including substring matching attribute";
+ ret += " selectors, and new pseudo-classes";
+ ret += " </li>";
+ ret += " <li>new pseudo-elements, and introduction of the '::' convention";
+ ret += " </li>";
+ ret += " <li>the grammar has been rewritten</li>";
+ ret += " <li>profiles to be added to specifications integrating Selectors";
+ ret += " and defining the set of selectors which is actually supported by";
+ ret += " </li>";
+ ret += " <li>Selectors are now a CSS3 Module and an independent";
+ ret += " </li>";
+ ret += " <li>the specification now has its own test suite</li>";
+ ret += " </ul>";
+ ret += " <h2><a name='selectors'></a>2. Selectors</h2>";
+ ret += " <p><em>This section is non-normative, as it merely summarizes the";
+ ret += " following sections.</em></p>";
+ ret += " <p>A Selector represents a structure. This structure can be used as a";
+ ret += " HTML or XML fragment corresponding to that structure.</p>";
+ ret += " <p>Selectors may range from simple element names to rich contextual";
+ ret += " representations.</p>";
+ ret += " <p>The following table summarizes the Selector syntax:</p>";
+ ret += " <table class='selectorsReview'>";
+ ret += " <thead>";
+ ret += " <tr>";
+ ret += " <th class='pattern'>Pattern</th>";
+ ret += " <th class='meaning'>Meaning</th>";
+ ret += " <th class='described'>Described in section</th>";
+ ret += " <th class='origin'>First defined in CSS level</th>";
+ ret += " </tr>";
+ ret += " </thead><tbody>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>*</td>";
+ ret += " <td class='meaning'>any element</td>";
+ ret += " <td class='described'><a href='#universal-selector'>Universal";
+ ret += " selector</a></td>";
+ ret += " <td class='origin'>2</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E</td>";
+ ret += " <td class='meaning'>an element of type E</td>";
+ ret += " <td class='described'><a href='#type-selectors'>Type selector</a></td>";
+ ret += " <td class='origin'>1</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E[foo]</td>";
+ ret += " <td class='meaning'>an E element with a 'foo' attribute</td>";
+ ret += " <td class='described'><a href='#attribute-selectors'>Attribute";
+ ret += " selectors</a></td>";
+ ret += " <td class='origin'>2</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E[foo='bar']</td>";
+ ret += " <td class='meaning'>an E element whose 'foo' attribute value is exactly";
+ ret += " </td>";
+ ret += " <td class='described'><a href='#attribute-selectors'>Attribute";
+ ret += " selectors</a></td>";
+ ret += " <td class='origin'>2</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E[foo~='bar']</td>";
+ ret += " <td class='meaning'>an E element whose 'foo' attribute value is a list of";
+ ret += " </td>";
+ ret += " <td class='described'><a href='#attribute-selectors'>Attribute";
+ ret += " selectors</a></td>";
+ ret += " <td class='origin'>2</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E[foo^='bar']</td>";
+ ret += " <td class='meaning'>an E element whose 'foo' attribute value begins exactly";
+ ret += " </td>";
+ ret += " <td class='described'><a href='#attribute-selectors'>Attribute";
+ ret += " selectors</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E[foo$='bar']</td>";
+ ret += " <td class='meaning'>an E element whose 'foo' attribute value ends exactly";
+ ret += " </td>";
+ ret += " <td class='described'><a href='#attribute-selectors'>Attribute";
+ ret += " selectors</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E[foo*='bar']</td>";
+ ret += " <td class='meaning'>an E element whose 'foo' attribute value contains the";
+ ret += " </td>";
+ ret += " <td class='described'><a href='#attribute-selectors'>Attribute";
+ ret += " selectors</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E[hreflang|='en']</td>";
+ ret += " <td class='meaning'>an E element whose 'hreflang' attribute has a";
+ ret += " </td>";
+ ret += " <td class='described'><a href='#attribute-selectors'>Attribute";
+ ret += " selectors</a></td>";
+ ret += " <td class='origin'>2</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:root</td>";
+ ret += " <td class='meaning'>an E element, root of the document</td>";
+ ret += " <td class='described'><a href='#structural-pseudos'>Structural";
+ ret += " pseudo-classes</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:nth-child(n)</td>";
+ ret += " <td class='meaning'>an E element, the n-th child of its parent</td>";
+ ret += " <td class='described'><a href='#structural-pseudos'>Structural";
+ ret += " pseudo-classes</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:nth-last-child(n)</td>";
+ ret += " <td class='meaning'>an E element, the n-th child of its parent, counting";
+ ret += " </td>";
+ ret += " <td class='described'><a href='#structural-pseudos'>Structural";
+ ret += " pseudo-classes</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:nth-of-type(n)</td>";
+ ret += " <td class='meaning'>an E element, the n-th sibling of its type</td>";
+ ret += " <td class='described'><a href='#structural-pseudos'>Structural";
+ ret += " pseudo-classes</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:nth-last-of-type(n)</td>";
+ ret += " <td class='meaning'>an E element, the n-th sibling of its type, counting";
+ ret += " </td>";
+ ret += " <td class='described'><a href='#structural-pseudos'>Structural";
+ ret += " pseudo-classes</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:first-child</td>";
+ ret += " <td class='meaning'>an E element, first child of its parent</td>";
+ ret += " <td class='described'><a href='#structural-pseudos'>Structural";
+ ret += " pseudo-classes</a></td>";
+ ret += " <td class='origin'>2</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:last-child</td>";
+ ret += " <td class='meaning'>an E element, last child of its parent</td>";
+ ret += " <td class='described'><a href='#structural-pseudos'>Structural";
+ ret += " pseudo-classes</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:first-of-type</td>";
+ ret += " <td class='meaning'>an E element, first sibling of its type</td>";
+ ret += " <td class='described'><a href='#structural-pseudos'>Structural";
+ ret += " pseudo-classes</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:last-of-type</td>";
+ ret += " <td class='meaning'>an E element, last sibling of its type</td>";
+ ret += " <td class='described'><a href='#structural-pseudos'>Structural";
+ ret += " pseudo-classes</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:only-child</td>";
+ ret += " <td class='meaning'>an E element, only child of its parent</td>";
+ ret += " <td class='described'><a href='#structural-pseudos'>Structural";
+ ret += " pseudo-classes</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:only-of-type</td>";
+ ret += " <td class='meaning'>an E element, only sibling of its type</td>";
+ ret += " <td class='described'><a href='#structural-pseudos'>Structural";
+ ret += " pseudo-classes</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:empty</td>";
+ ret += " <td class='meaning'>an E element that has no children (including text";
+ ret += " </td>";
+ ret += " <td class='described'><a href='#structural-pseudos'>Structural";
+ ret += " pseudo-classes</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:link<br>E:visited</td>";
+ ret += " <td class='meaning'>an E element being the source anchor of a hyperlink of";
+ ret += " </td>";
+ ret += " <td class='described'><a href='#link'>The link";
+ ret += " pseudo-classes</a></td>";
+ ret += " <td class='origin'>1</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:active<br>E:hover<br>E:focus</td>";
+ ret += " <td class='meaning'>an E element during certain user actions</td>";
+ ret += " <td class='described'><a href='#useraction-pseudos'>The user";
+ ret += " action pseudo-classes</a></td>";
+ ret += " <td class='origin'>1 and 2</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:target</td>";
+ ret += " <td class='meaning'>an E element being the target of the referring URI</td>";
+ ret += " <td class='described'><a href='#target-pseudo'>The target";
+ ret += " pseudo-class</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:lang(fr)</td>";
+ ret += " <td class='meaning'>an element of type E in language 'fr' (the document";
+ ret += " </td>";
+ ret += " <td class='described'><a href='#lang-pseudo'>The :lang()";
+ ret += " pseudo-class</a></td>";
+ ret += " <td class='origin'>2</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:enabled<br>E:disabled</td>";
+ ret += " <td class='meaning'>a user interface element E which is enabled or";
+ ret += " </td>";
+ ret += " <td class='described'><a href='#UIstates'>The UI element states";
+ ret += " pseudo-classes</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:checked<!--<br>E:indeterminate--></td>";
+ ret += " <td class='meaning'>a user interface element E which is checked<!-- or in an";
+ ret += " indeterminate state--> (for instance a radio-button or checkbox)";
+ ret += " </td>";
+ ret += " <td class='described'><a href='#UIstates'>The UI element states";
+ ret += " pseudo-classes</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E::first-line</td>";
+ ret += " <td class='meaning'>the first formatted line of an E element</td>";
+ ret += " <td class='described'><a href='#first-line'>The ::first-line";
+ ret += " pseudo-element</a></td>";
+ ret += " <td class='origin'>1</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E::first-letter</td>";
+ ret += " <td class='meaning'>the first formatted letter of an E element</td>";
+ ret += " <td class='described'><a href='#first-letter'>The ::first-letter";
+ ret += " pseudo-element</a></td>";
+ ret += " <td class='origin'>1</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E::selection</td>";
+ ret += " <td class='meaning'>the portion of an E element that is currently";
+ ret += " </td>";
+ ret += " <td class='described'><a href='#UIfragments'>The UI element";
+ ret += " fragments pseudo-elements</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E::before</td>";
+ ret += " <td class='meaning'>generated content before an E element</td>";
+ ret += " <td class='described'><a href='#gen-content'>The ::before";
+ ret += " pseudo-element</a></td>";
+ ret += " <td class='origin'>2</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E::after</td>";
+ ret += " <td class='meaning'>generated content after an E element</td>";
+ ret += " <td class='described'><a href='#gen-content'>The ::after";
+ ret += " pseudo-element</a></td>";
+ ret += " <td class='origin'>2</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E.warning</td>";
+ ret += " <td class='meaning'>an E element whose class is";
+ ret += " </td>";
+ ret += " <td class='described'><a href='#class-html'>Class";
+ ret += " selectors</a></td>";
+ ret += " <td class='origin'>1</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E#myid</td>";
+ ret += " <td class='meaning'>an E element with ID equal to 'myid'.</td>";
+ ret += " <td class='described'><a href='#id-selectors'>ID";
+ ret += " selectors</a></td>";
+ ret += " <td class='origin'>1</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E:not(s)</td>";
+ ret += " <td class='meaning'>an E element that does not match simple selector s</td>";
+ ret += " <td class='described'><a href='#negation'>Negation";
+ ret += " pseudo-class</a></td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E F</td>";
+ ret += " <td class='meaning'>an F element descendant of an E element</td>";
+ ret += " <td class='described'><a href='#descendant-combinators'>Descendant";
+ ret += " combinator</a></td>";
+ ret += " <td class='origin'>1</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E > F</td>";
+ ret += " <td class='meaning'>an F element child of an E element</td>";
+ ret += " <td class='described'><a href='#child-combinators'>Child";
+ ret += " combinator</a></td>";
+ ret += " <td class='origin'>2</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E + F</td>";
+ ret += " <td class='meaning'>an F element immediately preceded by an E element</td>";
+ ret += " <td class='described'><a href='#adjacent-sibling-combinators'>Adjacent sibling combinator</a>";
+ ret += " </td>";
+ ret += " <td class='origin'>2</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <td class='pattern'>E ~ F</td>";
+ ret += " <td class='meaning'>an F element preceded by an E element</td>";
+ ret += " <td class='described'><a href='#general-sibling-combinators'>General sibling combinator</a>";
+ ret += " </td>";
+ ret += " <td class='origin'>3</td>";
+ ret += " </tr>";
+ ret += " </tbody>";
+ ret += " </table>";
+ ret += " <p>The meaning of each selector is derived from the table above by";
+ ret += " column.</p>";
+ ret += " <h2><a name='casesens'>3. Case sensitivity</a></h2>";
+ ret += " <p>The case sensitivity of document language element names, attribute";
+ ret += " names, and attribute values in selectors depends on the document";
+ ret += " but in XML, they are case-sensitive.</p>";
+ ret += " <h2><a name='selector-syntax'>4. Selector syntax</a></h2>";
+ ret += " <p>A <dfn><a name='selector'>selector</a></dfn> is a chain of one";
+ ret += " or more <a href='#sequence'>sequences of simple selectors</a>";
+ ret += " separated by <a href='#combinators'>combinators</a>.</p>";
+ ret += " <p>A <dfn><a name='sequence'>sequence of simple selectors</a></dfn>";
+ ret += " is a chain of <a href='#simple-selectors-dfn'>simple selectors</a>";
+ ret += " that are not separated by a <a href='#combinators'>combinator</a>. It";
+ ret += " always begins with a <a href='#type-selectors'>type selector</a> or a";
+ ret += " <a href='#universal-selector'>universal selector</a>. No other type";
+ ret += " selector or universal selector is allowed in the sequence.</p>";
+ ret += " <p>A <dfn><a name='simple-selectors-dfn'></a><a href='#simple-selectors'>simple selector</a></dfn> is either a <a href='#type-selectors'>type selector</a>, <a href='#universal-selector'>universal selector</a>, <a href='#attribute-selectors'>attribute selector</a>, <a href='#class-html'>class selector</a>, <a href='#id-selectors'>ID selector</a>, <a href='#content-selectors'>content selector</a>, or <a href='#pseudo-classes'>pseudo-class</a>. One <a href='#pseudo-elements'>pseudo-element</a> may be appended to the last";
+ ret += " sequence of simple selectors.</p>";
+ ret += " <p><dfn>Combinators</dfn> are: white space, 'greater-than";
+ ret += " sign' (U+003E, <code>></code>), 'plus sign' (U+002B,";
+ ret += " <code>+</code>) and 'tilde' (U+007E, <code>~</code>). White";
+ ret += " space may appear between a combinator and the simple selectors around";
+ ret += " it. <a name='whitespace'></a>Only the characters 'space' (U+0020), 'tab'";
+ ret += " never part of white space.</p>";
+ ret += " <p>The elements of a document tree that are represented by a selector";
+ ret += " are the <dfn><a name='subject'></a>subjects of the selector</dfn>. A";
+ ret += " selector consisting of a single sequence of simple selectors";
+ ret += " sequence of simple selectors and a combinator to a sequence imposes";
+ ret += " simple selectors.</p>";
+ ret += " <p>An empty selector, containing no sequence of simple selectors and";
+ ret += " no pseudo-element, is an <a href='#Conformance'>invalid";
+ ret += " selector</a>.</p>";
+ ret += " <h2><a name='grouping'>5. Groups of selectors</a></h2>";
+ ret += " <p>When several selectors share the same declarations, they may be";
+ ret += " grouped into a comma-separated list. (A comma is U+002C.)</p>";
+ ret += " <div class='example'>";
+ ret += " <p>CSS examples:</p>";
+ ret += " <p>In this example, we condense three rules with identical";
+ ret += " declarations into one. Thus,</p>";
+ ret += " <pre>h1 { font-family: sans-serif }";
+ ret += " h3 { font-family: sans-serif }</pre>";
+ ret += " <p>is equivalent to:</p>";
+ ret += " <pre>h1, h2, h3 { font-family: sans-serif }</pre>";
+ ret += " </div>";
+ ret += " <p><strong>Warning</strong>: the equivalence is true in this example";
+ ret += " because all the selectors are valid selectors. If just one of these";
+ ret += " selectors were invalid, the entire group of selectors would be";
+ ret += " heading rules would be invalidated.</p>";
+ ret += " <h2><a name='simple-selectors'>6. Simple selectors</a></h2>";
+ ret += " <h3><a name='type-selectors'>6.1. Type selector</a></h3>";
+ ret += " <p>A <dfn>type selector</dfn> is the name of a document language";
+ ret += " type in the document tree.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Example:</p>";
+ ret += " <p>The following selector represents an <code>h1</code> element in the";
+ ret += " document tree:</p>";
+ ret += " <pre>h1</pre>";
+ ret += " </div>";
+ ret += " <h4><a name='typenmsp'>6.1.1. Type selectors and namespaces</a></h4>";
+ ret += " <p>Type selectors allow an optional namespace (<a href='#refsXMLNAMES'>[XMLNAMES]</a>) component. A namespace prefix";
+ ret += " (U+007C, <code>|</code>).</p>";
+ ret += " <p>The namespace component may be left empty to indicate that the";
+ ret += " selector is only to represent elements with no declared namespace.</p>";
+ ret += " <p>An asterisk may be used for the namespace prefix, indicating that";
+ ret += " with no namespace).</p>";
+ ret += " <p>Element type selectors that have no namespace component (no";
+ ret += " element's namespace (equivalent to '<code>*|</code>') unless a default";
+ ret += " namespace.</p>";
+ ret += " <p>A type selector containing a namespace prefix that has not been";
+ ret += " previously declared is an <a href='#Conformance'>invalid</a> selector.";
+ ret += " language implementing Selectors. In CSS, such a mechanism is defined";
+ ret += " in the General Syntax module.</p>";
+ ret += " <p>In a namespace-aware client, element type selectors will only match";
+ ret += " against the <a href='http://www.w3.org/TR/REC-xml-names/#NT-LocalPart'>local";
+ ret += " part</a>";
+ ret += " of the element's <a href='http://www.w3.org/TR/REC-xml-names/#ns-qualnames'>qualified";
+ ret += " name</a>. See <a href='#downlevel'>below</a> for notes about matching";
+ ret += " behaviors in down-level clients.</p>";
+ ret += " <p>In summary:</p>";
+ ret += " <dl>";
+ ret += " <dt><code>ns|E</code></dt>";
+ ret += " <dd>elements with name E in namespace ns</dd>";
+ ret += " <dt><code>*|E</code></dt>";
+ ret += " <dd>elements with name E in any namespace, including those without any";
+ ret += " </dd>";
+ ret += " <dt><code>|E</code></dt>";
+ ret += " <dd>elements with name E without any declared namespace</dd>";
+ ret += " <dt><code>E</code></dt>";
+ ret += " <dd>if no default namespace has been specified, this is equivalent to *|E.";
+ ret += " </dd>";
+ ret += " </dl>";
+ ret += " <div class='example'>";
+ ret += " <p>CSS examples:</p>";
+ ret += " <pre>@namespace foo url(http://www.example.com);";
+ ret += " h1 { color: green }</pre>";
+ ret += " <p>The first rule will match only <code>h1</code> elements in the";
+ ret += " 'http://www.example.com' namespace.</p>";
+ ret += " <p>The second rule will match all elements in the";
+ ret += " 'http://www.example.com' namespace.</p>";
+ ret += " <p>The third rule will match only <code>h1</code> elements without";
+ ret += " any declared namespace.</p>";
+ ret += " <p>The fourth rule will match <code>h1</code> elements in any";
+ ret += " namespace (including those without any declared namespace).</p>";
+ ret += " <p>The last rule is equivalent to the fourth rule because no default";
+ ret += " namespace has been defined.</p>";
+ ret += " </div>";
+ ret += " <h3><a name='universal-selector'>6.2. Universal selector</a></h3>";
+ ret += " <p>The <dfn>universal selector</dfn>, written 'asterisk'";
+ ret += " (<code>*</code>), represents the qualified name of any element";
+ ret += " specified, see <a href='#univnmsp'>Universal selector and";
+ ret += " Namespaces</a> below.</p>";
+ ret += " <p>If the universal selector is not the only component of a sequence";
+ ret += " of simple selectors, the <code>*</code> may be omitted.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <ul>";
+ ret += " <li><code>*[hreflang|=en]</code> and <code>[hreflang|=en]</code> are";
+ ret += " </li>";
+ ret += " <li><code>*.warning</code> and <code>.warning</code> are equivalent,";
+ ret += " </li>";
+ ret += " <li><code>*#myid</code> and <code>#myid</code> are equivalent.</li>";
+ ret += " </ul>";
+ ret += " </div>";
+ ret += " <p class='note'><strong>Note:</strong> it is recommended that the";
+ ret += " <code>*</code>, representing the universal selector, not be";
+ ret += " omitted.</p>";
+ ret += " <h4><a name='univnmsp'>6.2.1. Universal selector and namespaces</a></h4>";
+ ret += " <p>The universal selector allows an optional namespace component. It";
+ ret += " is used as follows:</p>";
+ ret += " <dl>";
+ ret += " <dt><code>ns|*</code></dt>";
+ ret += " <dd>all elements in namespace ns</dd>";
+ ret += " <dt><code>*|*</code></dt>";
+ ret += " <dd>all elements</dd>";
+ ret += " <dt><code>|*</code></dt>";
+ ret += " <dd>all elements without any declared namespace</dd>";
+ ret += " <dt><code>*</code></dt>";
+ ret += " <dd>if no default namespace has been specified, this is equivalent to *|*.";
+ ret += " </dd>";
+ ret += " </dl>";
+ ret += " <p>A universal selector containing a namespace prefix that has not";
+ ret += " been previously declared is an <a href='#Conformance'>invalid</a>";
+ ret += " to the language implementing Selectors. In CSS, such a mechanism is";
+ ret += " defined in the General Syntax module.</p>";
+ ret += " <h3><a name='attribute-selectors'>6.3. Attribute selectors</a></h3>";
+ ret += " <p>Selectors allow the representation of an element's attributes. When";
+ ret += " attribute selectors must be considered to match an element if that";
+ ret += " attribute selector.</p>";
+ ret += " <h4><a name='attribute-representation'>6.3.1. Attribute presence and values";
+ ret += " selectors</a></h4>";
+ ret += " <p>CSS2 introduced four attribute selectors:</p>";
+ ret += " <dl>";
+ ret += " <dt><code>[att]</code>";
+ ret += " </dt><dd>Represents an element with the <code>att</code> attribute, whatever the";
+ ret += " </dd>";
+ ret += " <dt><code>[att=val]</code></dt>";
+ ret += " <dd>Represents an element with the <code>att</code> attribute whose value is";
+ ret += " </dd>";
+ ret += " <dt><code>[att~=val]</code></dt>";
+ ret += " <dd>Represents an element with the <code>att</code> attribute whose value is";
+ ret += " a <a href='#whitespace'>whitespace</a>-separated list of words, one";
+ ret += " represent anything (since the words are <em>separated</em> by";
+ ret += " </dd>";
+ ret += " <dt><code>[att|=val]</code>";
+ ret += " </dt><dd>Represents an element with the <code>att</code> attribute, its value";
+ ret += " matches (e.g., the <code>hreflang</code> attribute on the";
+ ret += " <code>link</code> element in HTML) as described in RFC 3066 (<a href='#refsRFC3066'>[RFC3066]</a>). For <code>lang</code> (or";
+ ret += " <code>xml:lang</code>) language subcode matching, please see <a href='#lang-pseudo'>the <code>:lang</code> pseudo-class</a>.";
+ ret += " </dd>";
+ ret += " </dl>";
+ ret += " <p>Attribute values must be identifiers or strings. The";
+ ret += " case-sensitivity of attribute names and values in selectors depends on";
+ ret += " the document language.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <p>The following attribute selector represents an <code>h1</code>";
+ ret += " element that carries the <code>title</code> attribute, whatever its";
+ ret += " value:</p>";
+ ret += " <pre>h1[title]</pre>";
+ ret += " <p>In the following example, the selector represents a";
+ ret += " <code>span</code> element whose <code>class</code> attribute has";
+ ret += " exactly the value 'example':</p>";
+ ret += " <pre>span[class='example']</pre>";
+ ret += " <p>Multiple attribute selectors can be used to represent several";
+ ret += " attribute. Here, the selector represents a <code>span</code> element";
+ ret += " whose <code>hello</code> attribute has exactly the value 'Cleveland'";
+ ret += " and whose <code>goodbye</code> attribute has exactly the value";
+ ret += " 'Columbus':</p>";
+ ret += " <pre>span[hello='Cleveland'][goodbye='Columbus']</pre>";
+ ret += " <p>The following selectors illustrate the differences between '='";
+ ret += " 'copyright copyleft copyeditor' on a <code>rel</code> attribute. The";
+ ret += " second selector will only represent an <code>a</code> element with";
+ ret += " an <code>href</code> attribute having the exact value";
+ ret += " 'http://www.w3.org/'.</p>";
+ ret += " <pre>a[rel~='copyright']";
+ ret += " a[href='http://www.w3.org/']</pre>";
+ ret += " <p>The following selector represents a <code>link</code> element";
+ ret += " whose <code>hreflang</code> attribute is exactly 'fr'.</p>";
+ ret += " <pre>link[hreflang=fr]</pre>";
+ ret += " <p>The following selector represents a <code>link</code> element for";
+ ret += " which the values of the <code>hreflang</code> attribute begins with";
+ ret += " 'en', including 'en', 'en-US', and 'en-cockney':</p>";
+ ret += " <pre>link[hreflang|='en']</pre>";
+ ret += " <p>Similarly, the following selectors represents a";
+ ret += " <code>DIALOGUE</code> element whenever it has one of two different";
+ ret += " values for an attribute <code>character</code>:</p>";
+ ret += " <pre>DIALOGUE[character=romeo]";
+ ret += " DIALOGUE[character=juliet]</pre>";
+ ret += " </div>";
+ ret += " <h4><a name='attribute-substrings'></a>6.3.2. Substring matching attribute";
+ ret += " selectors</h4>";
+ ret += " <p>Three additional attribute selectors are provided for matching";
+ ret += " substrings in the value of an attribute:</p>";
+ ret += " <dl>";
+ ret += " <dt><code>[att^=val]</code></dt>";
+ ret += " <dd>Represents an element with the <code>att</code> attribute whose value";
+ ret += " </dd>";
+ ret += " <dt><code>[att$=val]</code>";
+ ret += " </dt><dd>Represents an element with the <code>att</code> attribute whose value";
+ ret += " </dd>";
+ ret += " <dt><code>[att*=val]</code>";
+ ret += " </dt><dd>Represents an element with the <code>att</code> attribute whose value";
+ ret += " </dd>";
+ ret += " </dl>";
+ ret += " <p>Attribute values must be identifiers or strings. The";
+ ret += " case-sensitivity of attribute names in selectors depends on the";
+ ret += " document language.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <p>The following selector represents an HTML <code>object</code>,";
+ ret += " image:</p>";
+ ret += " <pre>object[type^='image/']</pre>";
+ ret += " <p>The following selector represents an HTML anchor <code>a</code> with an";
+ ret += " <code>href</code> attribute whose value ends with '.html'.</p>";
+ ret += " <pre>a[href$='.html']</pre>";
+ ret += " <p>The following selector represents an HTML paragraph with a";
+ ret += " <code>title</code>";
+ ret += " attribute whose value contains the substring 'hello'</p>";
+ ret += " <pre>p[title*='hello']</pre>";
+ ret += " </div>";
+ ret += " <h4><a name='attrnmsp'>6.3.3. Attribute selectors and namespaces</a></h4>";
+ ret += " <p>Attribute selectors allow an optional namespace component to the";
+ ret += " separator 'vertical bar' (<code>|</code>). In keeping with";
+ ret += " apply to attributes, therefore attribute selectors without a namespace";
+ ret += " (equivalent to '<code>|attr</code>'). An asterisk may be used for the";
+ ret += " </p><p>An attribute selector with an attribute name containing a namespace";
+ ret += " prefix that has not been previously declared is an <a href='#Conformance'>invalid</a> selector. The mechanism for";
+ ret += " a namespace prefix is left up to the language implementing Selectors.";
+ ret += " </p><div class='example'>";
+ ret += " <p>CSS examples:</p>";
+ ret += " <pre>@namespace foo 'http://www.example.com';";
+ ret += " [att] { color: green }</pre>";
+ ret += " <p>The first rule will match only elements with the attribute";
+ ret += " <code>att</code> in the 'http://www.example.com' namespace with the";
+ ret += " value 'val'.</p>";
+ ret += " <p>The second rule will match only elements with the attribute";
+ ret += " <code>att</code> regardless of the namespace of the attribute";
+ ret += " (including no declared namespace).</p>";
+ ret += " <p>The last two rules are equivalent and will match only elements";
+ ret += " with the attribute <code>att</code> where the attribute is not";
+ ret += " declared to be in a namespace.</p>";
+ ret += " </div>";
+ ret += " <h4><a name='def-values'>6.3.4. Default attribute values in DTDs</a></h4>";
+ ret += " <p>Attribute selectors represent explicitly set attribute values in";
+ ret += " selectors. Selectors should be designed so that they work even if the";
+ ret += " default values are not included in the document tree.</p>";
+ ret += " <p>More precisely, a UA is <em>not</em> required to read an 'external";
+ ret += " subset' of the DTD but <em>is</em> required to look for default";
+ ret += " attribute values in the document's 'internal subset.' (See <a href='#refsXML10'>[XML10]</a> for definitions of these subsets.)</p>";
+ ret += " <p>A UA that recognizes an XML namespace <a href='#refsXMLNAMES'>[XMLNAMES]</a> is not required to use its";
+ ret += " required to use its built-in knowledge of the XHTML DTD.)</p>";
+ ret += " <p class='note'><strong>Note:</strong> Typically, implementations";
+ ret += " choose to ignore external subsets.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Example:</p>";
+ ret += " <p>Consider an element EXAMPLE with an attribute 'notation' that has a";
+ ret += " default value of 'decimal'. The DTD fragment might be</p>";
+ ret += " <pre class='dtd-example'><!ATTLIST EXAMPLE notation (decimal,octal) 'decimal'></pre>";
+ ret += " <p>If the style sheet contains the rules</p>";
+ ret += " <pre>EXAMPLE[notation=decimal] { /*... default property settings ...*/ }";
+ ret += " EXAMPLE[notation=octal] { /*... other settings...*/ }</pre>";
+ ret += " <p>the first rule will not match elements whose 'notation' attribute";
+ ret += " attribute selector for the default value must be dropped:</p>";
+ ret += " <pre>EXAMPLE { /*... default property settings ...*/ }";
+ ret += " EXAMPLE[notation=octal] { /*... other settings...*/ }</pre>";
+ ret += " <p>Here, because the selector <code>EXAMPLE[notation=octal]</code> is";
+ ret += " cases' style rules.</p>";
+ ret += " </div>";
+ ret += " <h3><a name='class-html'>6.4. Class selectors</a></h3>";
+ ret += " <p>Working with HTML, authors may use the period (U+002E,";
+ ret += " <code>.</code>) notation as an alternative to the <code>~=</code>";
+ ret += " notation when representing the <code>class</code> attribute. Thus, for";
+ ret += " HTML, <code>div.value</code> and <code>div[class~=value]</code> have";
+ ret += " 'period' (<code>.</code>).</p>";
+ ret += " <p>UAs may apply selectors using the period (.) notation in XML";
+ ret += " 1.0 <a href='#refsSVG'>[SVG]</a> describes the <a href='http://www.w3.org/TR/2001/PR-SVG-20010719/styling.html#ClassAttribute'>SVG";
+ ret += " 'class' attribute</a> and how a UA should interpret it, and";
+ ret += " similarly MathML 1.01 <a href='#refsMATH'>[MATH]</a> describes the <a href='http://www.w3.org/1999/07/REC-MathML-19990707/chapter2.html#sec2.3.4'>MathML";
+ ret += " 'class' attribute</a>.)</p>";
+ ret += " <div class='example'>";
+ ret += " <p>CSS examples:</p>";
+ ret += " <p>We can assign style information to all elements with";
+ ret += " <code>class~='pastoral'</code> as follows:</p>";
+ ret += " <pre>*.pastoral { color: green } /* all elements with class~=pastoral */</pre>";
+ ret += " <p>or just</p>";
+ ret += " <pre>.pastoral { color: green } /* all elements with class~=pastoral */</pre>";
+ ret += " <p>The following assigns style only to H1 elements with";
+ ret += " <code>class~='pastoral'</code>:</p>";
+ ret += " <pre>H1.pastoral { color: green } /* H1 elements with class~=pastoral */</pre>";
+ ret += " <p>Given these rules, the first H1 instance below would not have";
+ ret += " green text, while the second would:</p>";
+ ret += " <pre><H1>Not green</H1>";
+ ret += " <H1 class='pastoral'>Very green</H1></pre>";
+ ret += " </div>";
+ ret += " <p>To represent a subset of 'class' values, each value must be preceded";
+ ret += " by a '.', in any order.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>CSS example:</p>";
+ ret += " <p>The following rule matches any P element whose 'class' attribute";
+ ret += " has been assigned a list of <a href='#whitespace'>whitespace</a>-separated values that includes";
+ ret += " 'pastoral' and 'marine':</p>";
+ ret += " <pre>p.pastoral.marine { color: green }</pre>";
+ ret += " <p>This rule matches when <code>class='pastoral blue aqua";
+ ret += " marine'</code> but does not match for <code>class='pastoral";
+ ret += " blue'</code>.</p>";
+ ret += " </div>";
+ ret += " <p class='note'><strong>Note:</strong> Because CSS gives considerable";
+ ret += " not.</p>";
+ ret += " <p class='note'><strong>Note:</strong> If an element has multiple";
+ ret += " this specification.</p>";
+ ret += " <h3><a name='id-selectors'>6.5. ID selectors</a></h3>";
+ ret += " <p>Document languages may contain attributes that are declared to be";
+ ret += " applies.</p>";
+ ret += " <p>An ID-typed attribute of a document language allows authors to";
+ ret += " ID selectors represent an element instance based on its identifier. An";
+ ret += " <code>#</code>) immediately followed by the ID value, which must be an";
+ ret += " identifier.</p>";
+ ret += " <p>Selectors does not specify how a UA knows the ID-typed attribute of";
+ ret += " </p><div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <p>The following ID selector represents an <code>h1</code> element";
+ ret += " whose ID-typed attribute has the value 'chapter1':</p>";
+ ret += " <pre>h1#chapter1</pre>";
+ ret += " <p>The following ID selector represents any element whose ID-typed";
+ ret += " attribute has the value 'chapter1':</p>";
+ ret += " <pre>#chapter1</pre>";
+ ret += " <p>The following selector represents any element whose ID-typed";
+ ret += " attribute has the value 'z98y'.</p>";
+ ret += " <pre>*#z98y</pre>";
+ ret += " </div>";
+ ret += " <p class='note'><strong>Note.</strong> In XML 1.0 <a href='#refsXML10'>[XML10]</a>, the information about which attribute";
+ ret += " should use normal attribute selectors instead:";
+ ret += " <code>[name=p371]</code> instead of <code>#p371</code>. Elements in";
+ ret += " XML 1.0 documents without a DTD do not have IDs at all.</p>";
+ ret += " <p>If an element has multiple ID attributes, all of them must be";
+ ret += " DOM3 Core, XML DTDs, and namespace-specific knowledge.</p>";
+ ret += " <h3><a name='pseudo-classes'>6.6. Pseudo-classes</a></h3>";
+ ret += " <p>The pseudo-class concept is introduced to permit selection based on";
+ ret += " expressed using the other simple selectors.</p>";
+ ret += " <p>A pseudo-class always consists of a 'colon'";
+ ret += " (<code>:</code>) followed by the name of the pseudo-class and";
+ ret += " optionally by a value between parentheses.</p>";
+ ret += " <p>Pseudo-classes are allowed in all sequences of simple selectors";
+ ret += " sequences of simple selectors, after the leading type selector or";
+ ret += " document.</p>";
+ ret += " <h4><a name='dynamic-pseudos'>6.6.1. Dynamic pseudo-classes</a></h4>";
+ ret += " <p>Dynamic pseudo-classes classify elements on characteristics other";
+ ret += " that cannot be deduced from the document tree.</p>";
+ ret += " <p>Dynamic pseudo-classes do not appear in the document source or";
+ ret += " document tree.</p>";
+ ret += " <h5>The <a name='link'>link pseudo-classes: :link and :visited</a></h5>";
+ ret += " <p>User agents commonly display unvisited links differently from";
+ ret += " previously visited ones. Selectors";
+ ret += " provides the pseudo-classes <code>:link</code> and";
+ ret += " <code>:visited</code> to distinguish them:</p>";
+ ret += " <ul>";
+ ret += " <li>The <code>:link</code> pseudo-class applies to links that have";
+ ret += " </li>";
+ ret += " <li>The <code>:visited</code> pseudo-class applies once the link has";
+ ret += " </li>";
+ ret += " </ul>";
+ ret += " <p>After some amount of time, user agents may choose to return a";
+ ret += " visited link to the (unvisited) ':link' state.</p>";
+ ret += " <p>The two states are mutually exclusive.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Example:</p>";
+ ret += " <p>The following selector represents links carrying class";
+ ret += " <code>external</code> and already visited:</p>";
+ ret += " <pre>a.external:visited</pre>";
+ ret += " </div>";
+ ret += " <p class='note'><strong>Note:</strong> It is possible for style sheet";
+ ret += " </p><p>UAs may therefore treat all links as unvisited links, or implement";
+ ret += " and unvisited links differently.</p>";
+ ret += " <h5>The <a name='useraction-pseudos'>user action pseudo-classes";
+ ret += " :hover, :active, and :focus</a></h5>";
+ ret += " <p>Interactive user agents sometimes change the rendering in response";
+ ret += " to user actions. Selectors provides";
+ ret += " acting on.</p>";
+ ret += " <ul>";
+ ret += " <li>The <code>:hover</code> pseudo-class applies while the user";
+ ret += " element. User agents not that do not support <a href='http://www.w3.org/TR/REC-CSS2/media.html#interactive-media-group'>interactive";
+ ret += " media</a> do not have to support this pseudo-class. Some conforming";
+ ret += " user agents that support <a href='http://www.w3.org/TR/REC-CSS2/media.html#interactive-media-group'>interactive";
+ ret += " media</a> may not be able to support this pseudo-class (e.g., a pen";
+ ret += " </li>";
+ ret += " <li>The <code>:active</code> pseudo-class applies while an element";
+ ret += " </li>";
+ ret += " <li>The <code>:focus</code> pseudo-class applies while an element";
+ ret += " </li>";
+ ret += " </ul>";
+ ret += " <p>There may be document language or implementation specific limits on";
+ ret += " which elements can become <code>:active</code> or acquire";
+ ret += " <code>:focus</code>.</p>";
+ ret += " <p>These pseudo-classes are not mutually exclusive. An element may";
+ ret += " match several pseudo-classes at the same time.</p>";
+ ret += " <p>Selectors doesn't define if the parent of an element that is";
+ ret += " ':active' or ':hover' is also in that state.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <pre>a:link /* unvisited links */";
+ ret += " a:active /* active links */</pre>";
+ ret += " <p>An example of combining dynamic pseudo-classes:</p>";
+ ret += " <pre>a:focus";
+ ret += " a:focus:hover</pre>";
+ ret += " <p>The last selector matches <code>a</code> elements that are in";
+ ret += " the pseudo-class :focus and in the pseudo-class :hover.</p>";
+ ret += " </div>";
+ ret += " <p class='note'><strong>Note:</strong> An element can be both ':visited'";
+ ret += " and ':active' (or ':link' and ':active').</p>";
+ ret += " <h4><a name='target-pseudo'>6.6.2. The target pseudo-class :target</a></h4>";
+ ret += " <p>Some URIs refer to a location within a resource. This kind of URI";
+ ret += " identifier (called the fragment identifier).</p>";
+ ret += " <p>URIs with fragment identifiers link to a certain element within the";
+ ret += " pointing to an anchor named <code>section_2</code> in an HTML";
+ ret += " document:</p>";
+ ret += " <pre>http://example.com/html/top.html#section_2</pre>";
+ ret += " <p>A target element can be represented by the <code>:target</code>";
+ ret += " the document has no target element.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Example:</p>";
+ ret += " <pre>p.note:target</pre>";
+ ret += " <p>This selector represents a <code>p</code> element of class";
+ ret += " <code>note</code> that is the target element of the referring";
+ ret += " URI.</p>";
+ ret += " </div>";
+ ret += " <div class='example'>";
+ ret += " <p>CSS example:</p>";
+ ret += " <p>Here, the <code>:target</code> pseudo-class is used to make the";
+ ret += " target element red and place an image before it, if there is one:</p>";
+ ret += " <pre>*:target { color : red }";
+ ret += " *:target::before { content : url(target.png) }</pre>";
+ ret += " </div>";
+ ret += " <h4><a name='lang-pseudo'>6.6.3. The language pseudo-class :lang</a></h4>";
+ ret += " <p>If the document language specifies how the human language of an";
+ ret += " element is determined, it is possible to write selectors that";
+ ret += " represent an element based on its language. For example, in HTML <a href='#refsHTML4'>[HTML4]</a>, the language is determined by a";
+ ret += " combination of the <code>lang</code> attribute, the <code>meta</code>";
+ ret += " headers). XML uses an attribute called <code>xml:lang</code>, and";
+ ret += " the language.</p>";
+ ret += " <p>The pseudo-class <code>:lang(C)</code> represents an element that";
+ ret += " <code>:lang()</code> selector is based solely on the identifier C";
+ ret += " element's language value, in the same way as if performed by the <a href='#attribute-representation'>'|='</a> operator in attribute";
+ ret += " selectors. The identifier C does not have to be a valid language";
+ ret += " name.</p>";
+ ret += " <p>C must not be empty. (If it is, the selector is invalid.)</p>";
+ ret += " <p class='note'><strong>Note:</strong> It is recommended that";
+ ret += " documents and protocols indicate language using codes from RFC 3066 <a href='#refsRFC3066'>[RFC3066]</a> or its successor, and by means of";
+ ret += " 'xml:lang' attributes in the case of XML-based documents <a href='#refsXML10'>[XML10]</a>. See <a href='http://www.w3.org/International/questions/qa-lang-2or3.html'>";
+ ret += " 'FAQ: Two-letter or three-letter language codes.'</a></p>";
+ ret += " <div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <p>The two following selectors represent an HTML document that is in";
+ ret += " Belgian, French, or German. The two next selectors represent";
+ ret += " <code>q</code> quotations in an arbitrary element in Belgian, French,";
+ ret += " or German.</p>";
+ ret += " <pre>html:lang(fr-be)";
+ ret += " :lang(de) > q</pre>";
+ ret += " </div>";
+ ret += " <h4><a name='UIstates'>6.6.4. The UI element states pseudo-classes</a></h4>";
+ ret += " <h5><a name='enableddisabled'>The :enabled and :disabled pseudo-classes</a></h5>";
+ ret += " <p>The <code>:enabled</code> pseudo-class allows authors to customize";
+ ret += " an enabled <code>input</code> element without also specifying what it";
+ ret += " would look like when it was disabled.</p>";
+ ret += " <p>Similar to <code>:enabled</code>, <code>:disabled</code> allows the";
+ ret += " element should look.</p>";
+ ret += " <p>Most elements will be neither enabled nor disabled. An element is";
+ ret += " presently activate it or transfer focus to it.</p>";
+ ret += " <h5><a name='checked'>The :checked pseudo-class</a></h5>";
+ ret += " <p>Radio and checkbox elements can be toggled by the user. Some menu";
+ ret += " toggled 'on' the <code>:checked</code> pseudo-class applies. The";
+ ret += " <code>:checked</code> pseudo-class initially applies to such elements";
+ ret += " that have the HTML4 <code>selected</code> and <code>checked</code>";
+ ret += " attributes as described in <a href='http://www.w3.org/TR/REC-html40/interact/forms.html#h-17.2.1'>Section";
+ ret += " 17.2.1 of HTML4</a>, but of course the user can toggle 'off' such";
+ ret += " elements in which case the <code>:checked</code> pseudo-class would no";
+ ret += " longer apply. While the <code>:checked</code> pseudo-class is dynamic";
+ ret += " on the presence of the semantic HTML4 <code>selected</code> and";
+ ret += " <code>checked</code> attributes, it applies to all media.";
+ ret += " </p><h5><a name='indeterminate'>The :indeterminate pseudo-class</a></h5>";
+ ret += " <div class='note'>";
+ ret += " <p>Radio and checkbox elements can be toggled by the user, but are";
+ ret += " This can be due to an element attribute, or DOM manipulation.</p>";
+ ret += " <p>A future version of this specification may introduce an";
+ ret += " <code>:indeterminate</code> pseudo-class that applies to such elements.";
+ ret += " <!--While the <code>:indeterminate</code> pseudo-class is dynamic in";
+ ret += " the presence of an element attribute, it applies to all media.</p>";
+ ret += " <p>Components of a radio-group initialized with no pre-selected choice";
+ ret += " are an example of :indeterminate state.--></p>";
+ ret += " </div>";
+ ret += " <h4><a name='structural-pseudos'>6.6.5. Structural pseudo-classes</a></h4>";
+ ret += " <p>Selectors introduces the concept of <dfn>structural";
+ ret += " pseudo-classes</dfn> to permit selection based on extra information that";
+ ret += " the document tree but cannot be represented by other simple selectors or";
+ ret += " </p><p>Note that standalone pieces of PCDATA (text nodes in the DOM) are";
+ ret += " </p><h5><a name='root-pseudo'>:root pseudo-class</a></h5>";
+ ret += " <p>The <code>:root</code> pseudo-class represents an element that is";
+ ret += " <code>HTML</code> element.";
+ ret += " </p><h5><a name='nth-child-pseudo'>:nth-child() pseudo-class</a></h5>";
+ ret += " <p>The";
+ ret += " <code>:nth-child(<var>a</var><code>n</code>+<var>b</var>)</code>";
+ ret += " <var>a</var><code>n</code>+<var>b</var>-1 siblings";
+ ret += " <strong>before</strong> it in the document tree, for a given positive";
+ ret += " integer or zero value of <code>n</code>, and has a parent element. In";
+ ret += " other words, this matches the <var>b</var>th child of an element after";
+ ret += " all the children have been split into groups of <var>a</var> elements";
+ ret += " each. For example, this allows the selectors to address every other";
+ ret += " of paragraph text in a cycle of four. The <var>a</var> and";
+ ret += " <var>b</var> values must be zero, negative integers or positive";
+ ret += " </p><p>In addition to this, <code>:nth-child()</code> can take";
+ ret += " '<code>odd</code>' and '<code>even</code>' as arguments instead.";
+ ret += " '<code>odd</code>' has the same signification as <code>2n+1</code>,";
+ ret += " and '<code>even</code>' has the same signification as <code>2n</code>.";
+ ret += " </p><div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <pre>tr:nth-child(2n+1) /* represents every odd row of an HTML table */";
+ ret += " p:nth-child(4n+4) { color: purple; }</pre>";
+ ret += " </div>";
+ ret += " <p>When <var>a</var>=0, no repeating is used, so for example";
+ ret += " <code>:nth-child(0n+5)</code> matches only the fifth child. When";
+ ret += " <var>a</var>=0, the <var>a</var><code>n</code> part need not be";
+ ret += " <code>:nth-child(<var>b</var>)</code> and the last example simplifies";
+ ret += " to <code>:nth-child(5)</code>.";
+ ret += " </p><div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <pre>foo:nth-child(0n+1) /* represents an element foo, first child of its parent element */";
+ ret += " foo:nth-child(1) /* same */</pre>";
+ ret += " </div>";
+ ret += " <p>When <var>a</var>=1, the number may be omitted from the rule.";
+ ret += " </p><div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <p>The following selectors are therefore equivalent:</p>";
+ ret += " <pre>bar:nth-child(1n+0) /* represents all bar elements, specificity (0,1,1) */";
+ ret += " bar /* same but lower specificity (0,0,1) */</pre>";
+ ret += " </div>";
+ ret += " <p>If <var>b</var>=0, then every <var>a</var>th element is picked. In";
+ ret += " such a case, the <var>b</var> part may be omitted.";
+ ret += " </p><div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <pre>tr:nth-child(2n+0) /* represents every even row of an HTML table */";
+ ret += " tr:nth-child(2n) /* same */</pre>";
+ ret += " </div>";
+ ret += " <p>If both <var>a</var> and <var>b</var> are equal to zero, the";
+ ret += " pseudo-class represents no element in the document tree.</p>";
+ ret += " <p>The value <var>a</var> can be negative, but only the positive";
+ ret += " values of <var>a</var><code>n</code>+<var>b</var>, for";
+ ret += " <code>n</code>≥0, may represent an element in the document";
+ ret += " tree.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Example:</p>";
+ ret += " <pre>html|tr:nth-child(-n+6) /* represents the 6 first rows of XHTML tables */</pre>";
+ ret += " </div>";
+ ret += " <p>When the value <var>b</var> is negative, the '+' character in the";
+ ret += " character indicating the negative value of <var>b</var>).</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <pre>:nth-child(10n-1) /* represents the 9th, 19th, 29th, etc, element */";
+ ret += " :nth-child(10n+-1) /* Syntactically invalid, and would be ignored */</pre>";
+ ret += " </div>";
+ ret += " <h5><a name='nth-last-child-pseudo'>:nth-last-child() pseudo-class</a></h5>";
+ ret += " <p>The <code>:nth-last-child(<var>a</var>n+<var>b</var>)</code>";
+ ret += " <var>a</var><code>n</code>+<var>b</var>-1 siblings";
+ ret += " <strong>after</strong> it in the document tree, for a given positive";
+ ret += " integer or zero value of <code>n</code>, and has a parent element. See";
+ ret += " <code>:nth-child()</code> pseudo-class for the syntax of its argument.";
+ ret += " It also accepts the '<code>even</code>' and '<code>odd</code>' values";
+ ret += " </p><div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <pre>tr:nth-last-child(-n+2) /* represents the two last rows of an HTML table */";
+ ret += " counting from the last one */</pre>";
+ ret += " </div>";
+ ret += " <h5><a name='nth-of-type-pseudo'>:nth-of-type() pseudo-class</a></h5>";
+ ret += " <p>The <code>:nth-of-type(<var>a</var>n+<var>b</var>)</code>";
+ ret += " <var>a</var><code>n</code>+<var>b</var>-1 siblings with the same";
+ ret += " element name <strong>before</strong> it in the document tree, for a";
+ ret += " given zero or positive integer value of <code>n</code>, and has a";
+ ret += " parent element. In other words, this matches the <var>b</var>th child";
+ ret += " groups of a elements each. See <code>:nth-child()</code> pseudo-class";
+ ret += " '<code>even</code>' and '<code>odd</code>' values.";
+ ret += " </p><div class='example'>";
+ ret += " <p>CSS example:</p>";
+ ret += " <p>This allows an author to alternate the position of floated images:</p>";
+ ret += " <pre>img:nth-of-type(2n+1) { float: right; }";
+ ret += " img:nth-of-type(2n) { float: left; }</pre>";
+ ret += " </div>";
+ ret += " <h5><a name='nth-last-of-type-pseudo'>:nth-last-of-type() pseudo-class</a></h5>";
+ ret += " <p>The <code>:nth-last-of-type(<var>a</var>n+<var>b</var>)</code>";
+ ret += " <var>a</var><code>n</code>+<var>b</var>-1 siblings with the same";
+ ret += " element name <strong>after</strong> it in the document tree, for a";
+ ret += " given zero or positive integer value of <code>n</code>, and has a";
+ ret += " parent element. See <code>:nth-child()</code> pseudo-class for the";
+ ret += " syntax of its argument. It also accepts the '<code>even</code>' and '<code>odd</code>'";
+ ret += " </p><div class='example'>";
+ ret += " <p>Example:</p>";
+ ret += " <p>To represent all <code>h2</code> children of an XHTML";
+ ret += " <code>body</code> except the first and last, one could use the";
+ ret += " following selector:</p>";
+ ret += " <pre>body > h2:nth-of-type(n+2):nth-last-of-type(n+2)</pre>";
+ ret += " <p>In this case, one could also use <code>:not()</code>, although the";
+ ret += " selector ends up being just as long:</p>";
+ ret += " <pre>body > h2:not(:first-of-type):not(:last-of-type)</pre>";
+ ret += " </div>";
+ ret += " <h5><a name='first-child-pseudo'>:first-child pseudo-class</a></h5>";
+ ret += " <p>Same as <code>:nth-child(1)</code>. The <code>:first-child</code>";
+ ret += " </p><div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <p>The following selector represents a <code>p</code> element that is";
+ ret += " the first child of a <code>div</code> element:</p>";
+ ret += " <pre>div > p:first-child</pre>";
+ ret += " <p>This selector can represent the <code>p</code> inside the";
+ ret += " <code>div</code> of the following fragment:</p>";
+ ret += " <pre><p> The last P before the note.</p>";
+ ret += " </div></pre>";
+ ret += " but cannot represent the second <code>p</code> in the following";
+ ret += " <pre><p> The last P before the note.</p>";
+ ret += " </div></pre>";
+ ret += " <p>The following two selectors are usually equivalent:</p>";
+ ret += " <pre>* > a:first-child /* a is first child of any element */";
+ ret += " a:first-child /* Same (assuming a is not the root element) */</pre>";
+ ret += " </div>";
+ ret += " <h5><a name='last-child-pseudo'>:last-child pseudo-class</a></h5>";
+ ret += " <p>Same as <code>:nth-last-child(1)</code>. The <code>:last-child</code>";
+ ret += " </p><div class='example'>";
+ ret += " <p>Example:</p>";
+ ret += " <p>The following selector represents a list item <code>li</code> that";
+ ret += " is the last child of an ordered list <code>ol</code>.";
+ ret += " </p><pre>ol > li:last-child</pre>";
+ ret += " </div>";
+ ret += " <h5><a name='first-of-type-pseudo'>:first-of-type pseudo-class</a></h5>";
+ ret += " <p>Same as <code>:nth-of-type(1)</code>. The <code>:first-of-type</code>";
+ ret += " </p><div class='example'>";
+ ret += " <p>Example:</p>";
+ ret += " <p>The following selector represents a definition title";
+ ret += " <code>dt</code> inside a definition list <code>dl</code>, this";
+ ret += " <code>dt</code> being the first of its type in the list of children of";
+ ret += " its parent element.</p>";
+ ret += " <pre>dl dt:first-of-type</pre>";
+ ret += " <p>It is a valid description for the first two <code>dt</code>";
+ ret += " elements in the following example but not for the third one:</p>";
+ ret += " <pre><dl>";
+ ret += " </dl></pre>";
+ ret += " </div>";
+ ret += " <h5><a name='last-of-type-pseudo'>:last-of-type pseudo-class</a></h5>";
+ ret += " <p>Same as <code>:nth-last-of-type(1)</code>. The";
+ ret += " <code>:last-of-type</code> pseudo-class represents an element that is";
+ ret += " element.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Example:</p>";
+ ret += " <p>The following selector represents the last data cell";
+ ret += " <code>td</code> of a table row.</p>";
+ ret += " <pre>tr > td:last-of-type</pre>";
+ ret += " </div>";
+ ret += " <h5><a name='only-child-pseudo'>:only-child pseudo-class</a></h5>";
+ ret += " <p>Represents an element that has a parent element and whose parent";
+ ret += " <code>:first-child:last-child</code> or";
+ ret += " <code>:nth-child(1):nth-last-child(1)</code>, but with a lower";
+ ret += " specificity.</p>";
+ ret += " <h5><a name='only-of-type-pseudo'>:only-of-type pseudo-class</a></h5>";
+ ret += " <p>Represents an element that has a parent element and whose parent";
+ ret += " as <code>:first-of-type:last-of-type</code> or";
+ ret += " <code>:nth-of-type(1):nth-last-of-type(1)</code>, but with a lower";
+ ret += " specificity.</p>";
+ ret += " <h5><a name='empty-pseudo'></a>:empty pseudo-class</h5>";
+ ret += " <p>The <code>:empty</code> pseudo-class represents an element that has";
+ ret += " empty or not.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <p><code>p:empty</code> is a valid representation of the following fragment:";
+ ret += " </p>";
+ ret += " <pre><p></p></pre>";
+ ret += " <p><code>foo:empty</code> is not a valid representation for the";
+ ret += " following fragments:</p>";
+ ret += " <pre><foo>bar</foo></pre>";
+ ret += " <pre><foo><bar>bla</bar></foo></pre>";
+ ret += " <pre><foo>this is not <bar>:empty</bar></foo></pre>";
+ ret += " </div>";
+ ret += " <h4><a name='content-selectors'>6.6.6. Blank</a></h4>";
+ ret += " <!-- It's the Return of Appendix H!!! Run away! -->";
+ ret += " <p>This section intentionally left blank.</p>";
+ ret += " <!-- (used to be :contains()) -->";
+ ret += " <h4><a name='negation'></a>6.6.7. The negation pseudo-class</h4>";
+ ret += " <p>The negation pseudo-class, <code>:not(<var>X</var>)</code>, is a";
+ ret += " functional notation taking a <a href='#simple-selectors-dfn'>simple";
+ ret += " selector</a> (excluding the negation pseudo-class itself and";
+ ret += " <!-- pseudo-elements are not simple selectors, so the above paragraph";
+ ret += " may be a bit confusing -->";
+ ret += " </p><div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <p>The following CSS selector matches all <code>button</code>";
+ ret += " elements in an HTML document that are not disabled.</p>";
+ ret += " <pre>button:not([DISABLED])</pre>";
+ ret += " <p>The following selector represents all but <code>FOO</code>";
+ ret += " elements.</p>";
+ ret += " <pre>*:not(FOO)</pre>";
+ ret += " <p>The following group of selectors represents all HTML elements";
+ ret += " except links.</p>";
+ ret += " <pre>html|*:not(:link):not(:visited)</pre>";
+ ret += " </div>";
+ ret += " <p>Default namespace declarations do not affect the argument of the";
+ ret += " type selector.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <p>Assuming that the default namespace is bound to";
+ ret += " elements that are not in that namespace:</p>";
+ ret += " <pre>*|*:not(*)</pre>";
+ ret += " <p>The following CSS selector matches any element being hovered,";
+ ret += " rule when they <em>are</em> being hovered.</p>";
+ ret += " <pre>*|*:not(:hover)</pre>";
+ ret += " </div>";
+ ret += " <p class='note'><strong>Note</strong>: the :not() pseudo allows";
+ ret += " useless selectors to be written. For instance <code>:not(*|*)</code>,";
+ ret += " which represents no element at all, or <code>foo:not(bar)</code>,";
+ ret += " which is equivalent to <code>foo</code> but with a higher";
+ ret += " specificity.</p>";
+ ret += " <h3><a name='pseudo-elements'>7. Pseudo-elements</a></h3>";
+ ret += " <p>Pseudo-elements create abstractions about the document tree beyond";
+ ret += " source document (e.g., the <code>::before</code> and";
+ ret += " <code>::after</code> pseudo-elements give access to generated";
+ ret += " content).</p>";
+ ret += " <p>A pseudo-element is made of two colons (<code>::</code>) followed";
+ ret += " by the name of the pseudo-element.</p>";
+ ret += " <p>This <code>::</code> notation is introduced by the current document";
+ ret += " <code>:first-line</code>, <code>:first-letter</code>,";
+ ret += " <code>:before</code> and <code>:after</code>). This compatibility is";
+ ret += " not allowed for the new pseudo-elements introduced in CSS level 3.</p>";
+ ret += " <p>Only one pseudo-element may appear per selector, and if present it";
+ ret += " must appear after the sequence of simple selectors that represents the";
+ ret += " <a href='#subject'>subjects</a> of the selector. <span class='note'>A";
+ ret += " pesudo-elements per selector.</span></p>";
+ ret += " <h4><a name='first-line'>7.1. The ::first-line pseudo-element</a></h4>";
+ ret += " <p>The <code>::first-line</code> pseudo-element describes the contents";
+ ret += " </p><div class='example'>";
+ ret += " <p>CSS example:</p>";
+ ret += " <pre>p::first-line { text-transform: uppercase }</pre>";
+ ret += " <p>The above rule means 'change the letters of the first line of every";
+ ret += " paragraph to uppercase'.</p>";
+ ret += " </div>";
+ ret += " <p>The selector <code>p::first-line</code> does not match any real";
+ ret += " agents will insert at the beginning of every paragraph.</p>";
+ ret += " <p>Note that the length of the first line depends on a number of";
+ ret += " an ordinary HTML paragraph such as:</p>";
+ ret += " <pre> <P>This is a somewhat long HTML ";
+ ret += " </pre>";
+ ret += " <p>the lines of which happen to be broken as follows:";
+ ret += " </p><pre> THIS IS A SOMEWHAT LONG HTML PARAGRAPH THAT";
+ ret += " </pre>";
+ ret += " <p>This paragraph might be 'rewritten' by user agents to include the";
+ ret += " <em>fictional tag sequence</em> for <code>::first-line</code>. This";
+ ret += " fictional tag sequence helps to show how properties are inherited.</p>";
+ ret += " <pre> <P><b><P::first-line></b> This is a somewhat long HTML ";
+ ret += " paragraph that <b></P::first-line></b> will be broken into several";
+ ret += " </pre>";
+ ret += " <p>If a pseudo-element breaks up a real element, the desired effect";
+ ret += " with a <code>span</code> element:</p>";
+ ret += " <pre> <P><b><SPAN class='test'></b> This is a somewhat long HTML";
+ ret += " lines.<b></SPAN></b> The first line will be identified";
+ ret += " </pre>";
+ ret += " <p>the user agent could simulate start and end tags for";
+ ret += " <code>span</code> when inserting the fictional tag sequence for";
+ ret += " <code>::first-line</code>.";
+ ret += " </p><pre> <P><P::first-line><b><SPAN class='test'></b> This is a";
+ ret += " paragraph that will <b></SPAN></b></P::first-line><b><SPAN";
+ ret += " class='test'></b> be";
+ ret += " lines.<b></SPAN></b> The first line will be identified";
+ ret += " </pre>";
+ ret += " <p>In CSS, the <code>::first-line</code> pseudo-element can only be";
+ ret += " or a table-cell.</p>";
+ ret += " <p><a name='first-formatted-line'></a>The 'first formatted line' of an";
+ ret += " line of the <code>div</code> in <code><DIV><P>This";
+ ret += " line...</P></DIV></code> is the first line of the <code>p</code>";
+ ret += " that both <code>p</code> and <code>div</code> are block-level).";
+ ret += " </p><p>The first line of a table-cell or inline-block cannot be the first";
+ ret += " formatted line of an ancestor element. Thus, in <code><DIV><P";
+ ret += " etcetera</DIV></code> the first formatted line of the";
+ ret += " <code>div</code> is not the line 'Hello'.";
+ ret += " </p><p class='note'>Note that the first line of the <code>p</code> in this";
+ ret += " fragment: <code><p><br>First...</code> doesn't contain any";
+ ret += " letters (assuming the default style for <code>br</code> in HTML";
+ ret += " </p><p>A UA should act as if the fictional start tags of the";
+ ret += " <code>::first-line</code> pseudo-elements were nested just inside the";
+ ret += " is an example. The fictional tag sequence for</p>";
+ ret += " <pre> <DIV>";
+ ret += " </pre>";
+ ret += " <p>is</p>";
+ ret += " <pre> <DIV>";
+ ret += " </pre>";
+ ret += " <p>The <code>::first-line</code> pseudo-element is similar to an";
+ ret += " following properties apply to a <code>::first-line</code>";
+ ret += " properties as well.</p>";
+ ret += " <h4><a name='first-letter'>7.2. The ::first-letter pseudo-element</a></h4>";
+ ret += " <p>The <code>::first-letter</code> pseudo-element represents the first";
+ ret += " is 'none'; otherwise, it is similar to a floated element.</p>";
+ ret += " <p>In CSS, these are the properties that apply to <code>::first-letter</code>";
+ ret += " of the letter, unlike for normal elements.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Example:</p>";
+ ret += " <p>This example shows a possible rendering of an initial cap. Note";
+ ret += " <code>::first-letter</code>";
+ ret += " fictional start tag of the first letter is inside the <span>span</span>,";
+ ret += " the font weight of the first letter is normal, not bold as the <span>span</span>:";
+ ret += " </p><pre> p { line-height: 1.1 }";
+ ret += " </pre>";
+ ret += " <div class='figure'>";
+ ret += " <p><img src='' alt='Image illustrating the ::first-letter pseudo-element'>";
+ ret += " </p></div>";
+ ret += " </div>";
+ ret += " <div class='example'>";
+ ret += " <p>The following CSS will make a drop cap initial letter span about two";
+ ret += " lines:</p>";
+ ret += " <pre> <!DOCTYPE HTML PUBLIC '-//W3C//DTD HTML 4.01//EN'>";
+ ret += " </pre>";
+ ret += " <p>This example might be formatted as follows:</p>";
+ ret += " <div class='figure'>";
+ ret += " <p><img src='' alt='Image illustrating the combined effect of the ::first-letter and ::first-line pseudo-elements'>";
+ ret += " </p>";
+ ret += " </div>";
+ ret += " <p>The <span class='index-inst' title='fictional tag";
+ ret += " sequence'>fictional tag sequence</span> is:</p>";
+ ret += " <pre> <P>";
+ ret += " </pre>";
+ ret += " <p>Note that the <code>::first-letter</code> pseudo-element tags abut";
+ ret += " block element.</p></div>";
+ ret += " <p>In order to achieve traditional drop caps formatting, user agents";
+ ret += " glyph outline may be taken into account when formatting.</p>";
+ ret += " <p>Punctuation (i.e, characters defined in Unicode in the 'open' (Ps),";
+ ret += " be included. <a href='#refsUNICODE'>[UNICODE]</a></p>";
+ ret += " <div class='figure'>";
+ ret += " <p><img src='' alt='Quotes that precede the";
+ ret += " first letter should be included.'></p>";
+ ret += " </div>";
+ ret += " <p>The <code>::first-letter</code> also applies if the first letter is";
+ ret += " money.'</p>";
+ ret += " <p>In CSS, the <code>::first-letter</code> pseudo-element applies to";
+ ret += " elements. <span class='note'>A future version of this specification";
+ ret += " types.</span></p>";
+ ret += " <p>The <code>::first-letter</code> pseudo-element can be used with all";
+ ret += " the element, even if that first text is in a descendant.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Example:</p>";
+ ret += " <p>The fictional tag sequence for this HTMLfragment:";
+ ret += " </p><pre><div>";
+ ret += " <p>The first text.</pre>";
+ ret += " <p>is:";
+ ret += " </p><pre><div>";
+ ret += " <p><div::first-letter><p::first-letter>T</...></...>he first text.</pre>";
+ ret += " </div>";
+ ret += " <p>The first letter of a table-cell or inline-block cannot be the";
+ ret += " first letter of an ancestor element. Thus, in <code><DIV><P";
+ ret += " etcetera</DIV></code> the first letter of the <code>div</code> is";
+ ret += " letter 'H'. In fact, the <code>div</code> doesn't have a first letter.";
+ ret += " </p><p>The first letter must occur on the <a href='#first-formatted-line'>first formatted line.</a> For example, in";
+ ret += " this fragment: <code><p><br>First...</code> the first line";
+ ret += " doesn't contain any letters and <code>::first-letter</code> doesn't";
+ ret += " match anything (assuming the default style for <code>br</code> in HTML";
+ ret += " </p><p>In CSS, if an element is a list item ('display: list-item'), the";
+ ret += " <code>::first-letter</code> applies to the first letter in the";
+ ret += " <code>::first-letter</code> on list items with 'list-style-position:";
+ ret += " inside'. If an element has <code>::before</code> or";
+ ret += " <code>::after</code> content, the <code>::first-letter</code> applies";
+ ret += " to the first letter of the element <em>including</em> that content.";
+ ret += " </p><div class='example'>";
+ ret += " <p>Example:</p>";
+ ret += " <p>After the rule 'p::before {content: 'Note: '}', the selector";
+ ret += " 'p::first-letter' matches the 'N' of 'Note'.</p>";
+ ret += " </div>";
+ ret += " <p>Some languages may have specific rules about how to treat certain";
+ ret += " considered within the <code>::first-letter</code> pseudo-element.";
+ ret += " </p><p>If the letters that would form the ::first-letter are not in the";
+ ret += " same element, such as ''T' in <code><p>'<em>T...</code>, the UA";
+ ret += " both elements, or simply not create a pseudo-element.</p>";
+ ret += " <p>Similarly, if the first letter(s) of the block are not at the start";
+ ret += " </p><div class='example'>";
+ ret += " <p>Example:</p>";
+ ret += " <p><a name='overlapping-example'>The following example</a> illustrates";
+ ret += " paragraph will be 'red'.</p>";
+ ret += " <pre>p { color: red; font-size: 12pt }";
+ ret += " <P>Some text that ends up on two lines</P></pre>";
+ ret += " <p>Assuming that a line break will occur before the word 'ends', the";
+ ret += " <span class='index-inst' title='fictional tag sequence'>fictional tag";
+ ret += " sequence</span> for this fragment might be:</p>";
+ ret += " <pre><P>";
+ ret += " </P></pre>";
+ ret += " <p>Note that the <code>::first-letter</code> element is inside the <code>::first-line</code>";
+ ret += " element. Properties set on <code>::first-line</code> are inherited by";
+ ret += " <code>::first-letter</code>, but are overridden if the same property is";
+ ret += " <code>::first-letter</code>.</p>";
+ ret += " </div>";
+ ret += " <h4><a name='UIfragments'>7.3.</a> <a name='selection'>The ::selection";
+ ret += " pseudo-element</a></h4>";
+ ret += " <p>The <code>::selection</code> pseudo-element applies to the portion";
+ ret += " field. This pseudo-element should not be confused with the <code><a href='#checked'>:checked</a></code> pseudo-class (which used to be";
+ ret += " named <code>:selected</code>)";
+ ret += " </p><p>Although the <code>::selection</code> pseudo-element is dynamic in";
+ ret += " <a href='#refsCSS21'>[CSS21]</a>) which was originally rendered to a";
+ ret += " <code>::selection</code> state to that other medium, and have all the";
+ ret += " required — UAs may omit the <code>::selection</code>";
+ ret += " </p><p>These are the CSS properties that apply to <code>::selection</code>";
+ ret += " <code>::selection</code> may be ignored.";
+ ret += " </p><h4><a name='gen-content'>7.4. The ::before and ::after pseudo-elements</a></h4>";
+ ret += " <p>The <code>::before</code> and <code>::after</code> pseudo-elements";
+ ret += " content. They are explained in CSS 2.1 <a href='#refsCSS21'>[CSS21]</a>.</p>";
+ ret += " <p>When the <code>::first-letter</code> and <code>::first-line</code>";
+ ret += " pseudo-elements are combined with <code>::before</code> and";
+ ret += " <code>::after</code>, they apply to the first letter or line of the";
+ ret += " element including the inserted text.</p>";
+ ret += " <h2><a name='combinators'>8. Combinators</a></h2>";
+ ret += " <h3><a name='descendant-combinators'>8.1. Descendant combinator</a></h3>";
+ ret += " <p>At times, authors may want selectors to describe an element that is";
+ ret += " <code>EM</code> element that is contained within an <code>H1</code>";
+ ret += " descendant combinator is <a href='#whitespace'>white space</a> that";
+ ret += " separates two sequences of simple selectors. A selector of the form";
+ ret += " '<code>A B</code>' represents an element <code>B</code> that is an";
+ ret += " arbitrary descendant of some ancestor element <code>A</code>.";
+ ret += " </p><div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <p>For example, consider the following selector:</p>";
+ ret += " <pre>h1 em</pre>";
+ ret += " <p>It represents an <code>em</code> element being the descendant of";
+ ret += " an <code>h1</code> element. It is a correct and valid, but partial,";
+ ret += " description of the following fragment:</p>";
+ ret += " <pre><h1>This <span class='myclass'>headline";
+ ret += " is <em>very</em> important</span></h1></pre>";
+ ret += " <p>The following selector:</p>";
+ ret += " <pre>div * p</pre>";
+ ret += " <p>represents a <code>p</code> element that is a grandchild or later";
+ ret += " descendant of a <code>div</code> element. Note the whitespace on";
+ ret += " of the P.</p>";
+ ret += " <p>The following selector, which combines descendant combinators and";
+ ret += " <a href='#attribute-selectors'>attribute selectors</a>, represents an";
+ ret += " element that (1) has the <code>href</code> attribute set and (2) is";
+ ret += " inside a <code>p</code> that is itself inside a <code>div</code>:</p>";
+ ret += " <pre>div p *[href]</pre>";
+ ret += " </div>";
+ ret += " <h3><a name='child-combinators'>8.2. Child combinators</a></h3>";
+ ret += " <p>A <dfn>child combinator</dfn> describes a childhood relationship";
+ ret += " 'greater-than sign' (<code>></code>) character and";
+ ret += " separates two sequences of simple selectors.";
+ ret += " </p><div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <p>The following selector represents a <code>p</code> element that is";
+ ret += " child of <code>body</code>:</p>";
+ ret += " <pre>body > p</pre>";
+ ret += " <p>The following example combines descendant combinators and child";
+ ret += " combinators.</p>";
+ ret += " <pre>div ol>li p</pre>";
+ ret += " <!-- LEAVE THOSE SPACES OUT! see below -->";
+ ret += " <p>It represents a <code>p</code> element that is a descendant of an";
+ ret += " <code>li</code> element; the <code>li</code> element must be the";
+ ret += " child of an <code>ol</code> element; the <code>ol</code> element must";
+ ret += " be a descendant of a <code>div</code>. Notice that the optional white";
+ ret += " space around the '>' combinator has been left out.</p>";
+ ret += " </div>";
+ ret += " <p>For information on selecting the first child of an element, please";
+ ret += " see the section on the <code><a href='#structural-pseudos'>:first-child</a></code> pseudo-class";
+ ret += " above.</p>";
+ ret += " <h3><a name='sibling-combinators'>8.3. Sibling combinators</a></h3>";
+ ret += " <p>There are two different sibling combinators: the adjacent sibling";
+ ret += " considering adjacency of elements.</p>";
+ ret += " <h4><a name='adjacent-sibling-combinators'>8.3.1. Adjacent sibling combinator</a>";
+ ret += " </h4>";
+ ret += " <p>The adjacent sibling combinator is made of the 'plus";
+ ret += " sign' (U+002B, <code>+</code>) character that separates two";
+ ret += " sequences of simple selectors. The elements represented by the two";
+ ret += " represented by the second one.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <p>The following selector represents a <code>p</code> element";
+ ret += " immediately following a <code>math</code> element:</p>";
+ ret += " <pre>math + p</pre>";
+ ret += " <p>The following selector is conceptually similar to the one in the";
+ ret += " adds a constraint to the <code>h1</code> element, that it must have";
+ ret += " <code>class='opener'</code>:</p>";
+ ret += " <pre>h1.opener + h2</pre>";
+ ret += " </div>";
+ ret += " <h4><a name='general-sibling-combinators'>8.3.2. General sibling combinator</a>";
+ ret += " </h4>";
+ ret += " <p>The general sibling combinator is made of the 'tilde'";
+ ret += " (U+007E, <code>~</code>) character that separates two sequences of";
+ ret += " simple selectors. The elements represented by the two sequences share";
+ ret += " represented by the second one.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Example:</p>";
+ ret += " <pre>h1 ~ pre</pre>";
+ ret += " <p>represents a <code>pre</code> element following an <code>h1</code>. It";
+ ret += " is a correct and valid, but partial, description of:</p>";
+ ret += " <pre><h1>Definition of the function a</h1>";
+ ret += " <pre>function a(x) = 12x/13.5</pre></pre>";
+ ret += " </div>";
+ ret += " <h2><a name='specificity'>9. Calculating a selector's specificity</a></h2>";
+ ret += " <p>A selector's specificity is calculated as follows:</p>";
+ ret += " <ul>";
+ ret += " <li>count the number of ID selectors in the selector (= a)</li>";
+ ret += " <li>count the number of class selectors, attributes selectors, and";
+ ret += " </li>";
+ ret += " <li>count the number of element names in the selector (= c)</li>";
+ ret += " <li>ignore pseudo-elements</li>";
+ ret += " </ul>";
+ ret += " <p>Selectors inside <a href='#negation'>the negation pseudo-class</a>";
+ ret += " a pseudo-class.</p>";
+ ret += " <p>Concatenating the three numbers a-b-c (in a number system with a";
+ ret += " large base) gives the specificity.</p>";
+ ret += " <div class='example'>";
+ ret += " <p>Examples:</p>";
+ ret += " <pre>* /* a=0 b=0 c=0 -> specificity = 0 */";
+ ret += " </pre>";
+ ret += " </div>";
+ ret += " <p class='note'><strong>Note:</strong> the specificity of the styles";
+ ret += " specified in an HTML <code>style</code> attribute is described in CSS";
+ ret += " 2.1. <a href='#refsCSS21'>[CSS21]</a>.</p>";
+ ret += " <h2><a name='w3cselgrammar'>10. The grammar of Selectors</a></h2>";
+ ret += " <h3><a name='grammar'>10.1. Grammar</a></h3>";
+ ret += " <p>The grammar below defines the syntax of Selectors. It is globally";
+ ret += " shorthand notations beyond Yacc (see <a href='#refsYACC'>[YACC]</a>)";
+ ret += " are used:</p>";
+ ret += " <ul>";
+ ret += " <li><b>*</b>: 0 or more";
+ ret += " </li><li><b>+</b>: 1 or more";
+ ret += " </li><li><b>?</b>: 0 or 1";
+ ret += " </li><li><b>|</b>: separates alternatives";
+ ret += " </li><li><b>[ ]</b>: grouping</li>";
+ ret += " </ul>";
+ ret += " <p>The productions are:</p>";
+ ret += " <pre>selectors_group";
+ ret += " ;</pre>";
+ ret += " <h3><a name='lex'>10.2. Lexical scanner</a></h3>";
+ ret += " <p>The following is the <a name='x3'>tokenizer</a>, written in Flex (see";
+ ret += " <a href='#refsFLEX'>[FLEX]</a>) notation. The tokenizer is";
+ ret += " case-insensitive.</p>";
+ ret += " <p>The two occurrences of '\377' represent the highest character";
+ ret += " possible code point in Unicode/ISO-10646. <a href='#refsUNICODE'>[UNICODE]</a></p>";
+ ret += " <pre>%option case-insensitive";
+ ret += " . return *yytext;</pre>";
+ ret += " <h2><a name='downlevel'>11. Namespaces and down-level clients</a></h2>";
+ ret += " <p>An important issue is the interaction of CSS selectors with XML";
+ ret += " to construct a CSS style sheet which will properly match selectors in";
+ ret += " is possible to construct a style sheet in which selectors would match";
+ ret += " elements and attributes correctly.</p>";
+ ret += " <p>It should be noted that a down-level CSS client will (if it";
+ ret += " <code>@namespace</code> at-rules, as well as all style rules that make";
+ ret += " use of namespace qualified element type or attribute selectors. The";
+ ret += " than possibly match them incorrectly.</p>";
+ ret += " <p>The use of default namespaces in CSS makes it possible to write";
+ ret += " element type selectors that will function in both namespace aware CSS";
+ ret += " down-level clients may incorrectly match selectors against XML";
+ ret += " elements in other namespaces.</p>";
+ ret += " <p>The following are scenarios and examples in which it is possible to";
+ ret += " that do not implement this proposal.</p>";
+ ret += " <ol>";
+ ret += " <li>";
+ ret += " <p>The XML document does not use namespaces.</p>";
+ ret += " <ul>";
+ ret += " <li>In this case, it is obviously not necessary to declare or use";
+ ret += " attribute selectors will function adequately in a down-level";
+ ret += " </li>";
+ ret += " <li>In a CSS namespace aware client, the default behavior of";
+ ret += " element selectors matching without regard to namespace will";
+ ret += " present. However, the use of specific element type selectors";
+ ret += " match only elements that have no namespace ('<code>|name</code>')";
+ ret += " will guarantee that selectors will match only XML elements that";
+ ret += " </li>";
+ ret += " </ul>";
+ ret += " </li>";
+ ret += " <li>";
+ ret += " <p>The XML document defines a single, default namespace used";
+ ret += " names.</p>";
+ ret += " <ul>";
+ ret += " <li>In this case, a down-level client will function as if";
+ ret += " element type and attribute selectors will match against all";
+ ret += " </li>";
+ ret += " </ul>";
+ ret += " </li>";
+ ret += " <li>";
+ ret += " <p>The XML document does <b>not</b> use a default namespace, all";
+ ret += " to the same URI).</p>";
+ ret += " <ul>";
+ ret += " <li>In this case, the down-level client will view and match";
+ ret += " element type and attribute selectors based on their fully";
+ ret += " qualified name, not the local part as outlined in the <a href='#typenmsp'>Type selectors and Namespaces</a>";
+ ret += " selectors may be declared using an escaped colon";
+ ret += " '<code>\\:</code>'";
+ ret += " '<code>html\\:h1</code>' will match";
+ ret += " <code><html:h1></code>. Selectors using the qualified name";
+ ret += " </li>";
+ ret += " <li>Note that selectors declared in this fashion will";
+ ret += " <em>only</em> match in down-level clients. A CSS namespace aware";
+ ret += " client will match element type and attribute selectors based on";
+ ret += " the name's local part. Selectors declared with the fully";
+ ret += " </li>";
+ ret += " </ul>";
+ ret += " </li>";
+ ret += " </ol>";
+ ret += " <p>In other scenarios: when the namespace prefixes used in the XML are";
+ ret += " <em>different</em> namespace URIs within the same document, or in";
+ ret += " a CSS and XML namespace aware client.</p>";
+ ret += " <h2><a name='profiling'>12. Profiles</a></h2>";
+ ret += " <p>Each specification using Selectors must define the subset of W3C";
+ ret += " Selectors it allows and excludes, and describe the local meaning of";
+ ret += " all the components of that subset.</p>";
+ ret += " <p>Non normative examples:";
+ ret += " </p><div class='profile'>";
+ ret += " <table class='tprofile'>";
+ ret += " <tbody>";
+ ret += " <tr>";
+ ret += " <th class='title' colspan='2'>Selectors profile</th>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <th>Specification</th>";
+ ret += " <td>CSS level 1</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <th>Accepts</th>";
+ ret += " <td>type selectors<br>class selectors<br>ID selectors<br>:link,";
+ ret += " :visited and :active pseudo-classes<br>descendant combinator";
+ ret += " <br>::first-line and ::first-letter pseudo-elements";
+ ret += " </td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <th>Excludes</th>";
+ ret += " <td>";
+ ret += " <p>universal selector<br>attribute selectors<br>:hover and";
+ ret += " pseudo-classes<br>:target pseudo-class<br>:lang()";
+ ret += " pseudo-class<br>all UI";
+ ret += " element states pseudo-classes<br>all structural";
+ ret += " pseudo-classes<br>negation pseudo-class<br>all";
+ ret += " UI element fragments pseudo-elements<br>::before and ::after";
+ ret += " pseudo-elements<br>child combinators<br>sibling combinators";
+ ret += " </p><p>namespaces</p></td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <th>Extra constraints</th>";
+ ret += " <td>only one class selector allowed per sequence of simple";
+ ret += " selectors";
+ ret += " </td>";
+ ret += " </tr>";
+ ret += " </tbody>";
+ ret += " </table>";
+ ret += " <br><br>";
+ ret += " <table class='tprofile'>";
+ ret += " <tbody>";
+ ret += " <tr>";
+ ret += " <th class='title' colspan='2'>Selectors profile</th>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <th>Specification</th>";
+ ret += " <td>CSS level 2</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <th>Accepts</th>";
+ ret += " <td>type selectors<br>universal selector<br>attribute presence and";
+ ret += " values selectors<br>class selectors<br>ID selectors<br>:link,";
+ ret += " <br>descendant combinator<br>child combinator<br>adjacent";
+ ret += " combinator<br>::first-line and ::first-letter";
+ ret += " pseudo-elements<br>::before";
+ ret += " </td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <th>Excludes</th>";
+ ret += " <td>";
+ ret += " <p>content selectors<br>substring matching attribute";
+ ret += " selectors<br>:target pseudo-classes<br>all UI element";
+ ret += " states pseudo-classes<br>all structural pseudo-classes other";
+ ret += " than :first-child<br>negation pseudo-class<br>all UI element";
+ ret += " fragments pseudo-elements<br>general sibling combinators";
+ ret += " </p><p>namespaces</p></td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <th>Extra constraints</th>";
+ ret += " <td>more than one class selector per sequence of simple selectors";
+ ret += " </td>";
+ ret += " </tr>";
+ ret += " </tbody>";
+ ret += " </table>";
+ ret += " <p>In CSS, selectors express pattern matching rules that determine which";
+ ret += " </p><p>The following selector (CSS level 2) will <b>match</b> all anchors <code>a</code>";
+ ret += " with attribute <code>name</code> set inside a section 1 header";
+ ret += " <code>h1</code>:";
+ ret += " </p><pre>h1 a[name]</pre>";
+ ret += " <p>All CSS declarations attached to such a selector are applied to elements";
+ ret += " matching it.</p></div>";
+ ret += " <div class='profile'>";
+ ret += " <table class='tprofile'>";
+ ret += " <tbody>";
+ ret += " <tr>";
+ ret += " <th class='title' colspan='2'>Selectors profile</th>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <th>Specification</th>";
+ ret += " <td>STTS 3</td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <th>Accepts</th>";
+ ret += " <td>";
+ ret += " <p>type selectors<br>universal selectors<br>attribute";
+ ret += " selectors<br>class";
+ ret += " selectors<br>ID selectors<br>all structural";
+ ret += " pseudo-classes<br>";
+ ret += " </p><p>namespaces</p></td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <th>Excludes</th>";
+ ret += " <td>non-accepted pseudo-classes<br>pseudo-elements<br></td>";
+ ret += " </tr>";
+ ret += " <tr>";
+ ret += " <th>Extra constraints</th>";
+ ret += " <td>some selectors and combinators are not allowed in fragment";
+ ret += " </td>";
+ ret += " </tr>";
+ ret += " </tbody>";
+ ret += " </table>";
+ ret += " <p>Selectors can be used in STTS 3 in two different";
+ ret += " </p><ol>";
+ ret += " <li>a selection mechanism equivalent to CSS selection mechanism:";
+ ret += " </li><li>fragment descriptions that appear on the right side of declarations.";
+ ret += " </li>";
+ ret += " </ol>";
+ ret += " </div>";
+ ret += " <h2><a name='Conformance'></a>13. Conformance and requirements</h2>";
+ ret += " <p>This section defines conformance with the present specification only.";
+ ret += " </p><p>The inability of a user agent to implement part of this specification due to";
+ ret += " </p><p>All specifications reusing Selectors must contain a <a href='#profiling'>Profile</a> listing the";
+ ret += " subset of Selectors it accepts or excludes, and describing the constraints";
+ ret += " </p><p>Invalidity is caused by a parsing error, e.g. an unrecognized token or a";
+ ret += " </p><p>User agents must observe the rules for handling parsing errors:";
+ ret += " </p><ul>";
+ ret += " <li>a simple selector containing an undeclared namespace prefix is invalid";
+ ret += " </li>";
+ ret += " <li>a selector containing an invalid simple selector, an invalid combinator";
+ ret += " </li>";
+ ret += " <li>a group of selectors containing an invalid selector is invalid.</li>";
+ ret += " </ul>";
+ ret += " <p>Specifications reusing Selectors must define how to handle parsing";
+ ret += " used is dropped.)</p>";
+ ret += " <!-- Apparently all these references are out of date:";
+ ret += " <p>Implementations of this specification must behave as";
+ ret += " 'recipients of text data' as defined by <a href='#refsCWWW'>[CWWW]</a>";
+ ret += " when parsing selectors and attempting matches. (In particular,";
+ ret += " <a href='#refsCWWW'>[CWWW]</a> and <a";
+ ret += " href='#refsUNICODE'>[UNICODE]</a> and apply to implementations of this";
+ ret += " specification.</p>-->";
+ ret += " <h2><a name='Tests'></a>14. Tests</h2>";
+ ret += " <p>This specification has <a href='http://www.w3.org/Style/CSS/Test/CSS3/Selectors/current/'>a test";
+ ret += " suite</a> allowing user agents to verify their basic conformance to";
+ ret += " and does not cover all possible combined cases of Selectors.</p>";
+ ret += " <h2><a name='ACKS'></a>15. Acknowledgements</h2>";
+ ret += " <p>The CSS working group would like to thank everyone who has sent";
+ ret += " comments on this specification over the years.</p>";
+ ret += " <p>The working group would like to extend special thanks to Donna";
+ ret += " the final editorial review.</p>";
+ ret += " <h2><a name='references'>16. References</a></h2>";
+ ret += " <dl class='refs'>";
+ ret += " <dt>[CSS1]";
+ ret += " </dt><dd><a name='refsCSS1'></a> Bert Bos, Håkon Wium Lie; '<cite>Cascading";
+ ret += " Style Sheets, level 1</cite>', W3C Recommendation, 17 Dec 1996, revised";
+ ret += " </dd><dd>(<code><a href='http://www.w3.org/TR/REC-CSS1'>http://www.w3.org/TR/REC-CSS1</a></code>)";
+ ret += " </dd><dt>[CSS21]";
+ ret += " </dt><dd><a name='refsCSS21'></a> Bert Bos, Tantek Çelik, Ian Hickson, Håkon";
+ ret += " Wium Lie, editors; '<cite>Cascading Style Sheets, level 2 revision";
+ ret += " 1</cite>', W3C Working Draft, 13 June 2005";
+ ret += " </dd><dd>(<code><a href='http://www.w3.org/TR/CSS21'>http://www.w3.org/TR/CSS21</a></code>)";
+ ret += " </dd><dt>[CWWW]";
+ ret += " </dt><dd><a name='refsCWWW'></a> Martin J. Dürst, François Yergeau,";
+ ret += " Misha Wolf, Asmus Freytag, Tex Texin, editors; '<cite>Character Model";
+ ret += " for the World Wide Web</cite>', W3C Recommendation, 15 February 2005";
+ ret += " </dd><dd>(<code><a href='http://www.w3.org/TR/charmod/'>http://www.w3.org/TR/charmod/</a></code>)";
+ ret += " </dd><dt>[FLEX]";
+ ret += " </dt><dd><a name='refsFLEX'></a> '<cite>Flex: The Lexical Scanner";
+ ret += " Generator</cite>', Version 2.3.7, ISBN 1882114213";
+ ret += " </dd><dt>[HTML4]";
+ ret += " </dt><dd><a name='refsHTML4'></a> Dave Ragget, Arnaud Le Hors, Ian Jacobs,";
+ ret += " editors; '<cite>HTML 4.01 Specification</cite>', W3C Recommendation, 24";
+ ret += " </dd><dd>";
+ ret += " (<a href='http://www.w3.org/TR/html4/'><code>http://www.w3.org/TR/html4/</code></a>)";
+ ret += " </dd><dt>[MATH]";
+ ret += " </dt><dd><a name='refsMATH'></a> Patrick Ion, Robert Miner, editors; '<cite>Mathematical";
+ ret += " Markup Language (MathML) 1.01</cite>', W3C Recommendation, revision of 7";
+ ret += " </dd><dd>(<code><a href='http://www.w3.org/TR/REC-MathML/'>http://www.w3.org/TR/REC-MathML/</a></code>)";
+ ret += " </dd><dt>[RFC3066]";
+ ret += " </dt><dd><a name='refsRFC3066'></a> H. Alvestrand; '<cite>Tags for the";
+ ret += " Identification of Languages</cite>', Request for Comments 3066, January";
+ ret += " </dd><dd>(<a href='http://www.ietf.org/rfc/rfc3066.txt'><code>http://www.ietf.org/rfc/rfc3066.txt</code></a>)";
+ ret += " </dd><dt>[STTS]";
+ ret += " </dt><dd><a name='refsSTTS'></a> Daniel Glazman; '<cite>Simple Tree Transformation";
+ ret += " Sheets 3</cite>', Electricité de France, submission to the W3C,";
+ ret += " </dd><dd>(<code><a href='http://www.w3.org/TR/NOTE-STTS3'>http://www.w3.org/TR/NOTE-STTS3</a></code>)";
+ ret += " </dd><dt>[SVG]";
+ ret += " </dt><dd><a name='refsSVG'></a> Jon Ferraiolo, 藤沢 淳, Dean";
+ ret += " Jackson, editors; '<cite>Scalable Vector Graphics (SVG) 1.1";
+ ret += " Specification</cite>', W3C Recommendation, 14 January 2003";
+ ret += " </dd><dd>(<code><a href='http://www.w3.org/TR/SVG/'>http://www.w3.org/TR/SVG/</a></code>)";
+ ret += " </dd><dt>[UNICODE]</dt>";
+ ret += " <dd><a name='refsUNICODE'></a> <cite><a href='http://www.unicode.org/versions/Unicode4.1.0/'>The Unicode";
+ ret += " Standard, Version 4.1</a></cite>, The Unicode Consortium. Boston, MA,";
+ ret += " Addison-Wesley, March 2005. ISBN 0-321-18578-1, as amended by <a href='http://www.unicode.org/versions/Unicode4.0.1/'>Unicode";
+ ret += " 4.0.1</a> and <a href='http://www.unicode.org/versions/Unicode4.1.0/'>Unicode";
+ ret += " 4.1.0</a>.";
+ ret += " </dd><dd>(<code><a href='http://www.unicode.org/versions/'>http://www.unicode.org/versions/</a></code>)";
+ ret += " </dd>";
+ ret += " <dt>[XML10]";
+ ret += " </dt><dd><a name='refsXML10'></a> Tim Bray, Jean Paoli, C. M. Sperberg-McQueen,";
+ ret += " Eve Maler, François Yergeau, editors; '<cite>Extensible Markup";
+ ret += " Language (XML) 1.0 (Third Edition)</cite>', W3C Recommendation, 4";
+ ret += " </dd><dd>(<a href='http://www.w3.org/TR/REC-xml/'><code>http://www.w3.org/TR/REC-xml/</code></a>)";
+ ret += " </dd><dt>[XMLNAMES]";
+ ret += " </dt><dd><a name='refsXMLNAMES'></a> Tim Bray, Dave Hollander, Andrew Layman,";
+ ret += " editors; '<cite>Namespaces in XML</cite>', W3C Recommendation, 14";
+ ret += " </dd><dd>(<a href='http://www.w3.org/TR/REC-xml-names/'><code>http://www.w3.org/TR/REC-xml-names/</code></a>)";
+ ret += " </dd><dt>[YACC]";
+ ret += " </dt><dd><a name='refsYACC'></a> S. C. Johnson; '<cite>YACC — Yet another";
+ ret += " compiler compiler</cite>', Technical Report, Murray Hill, 1975";
+ ret += " </dd></dl>'; </div>";
+ ret += " <input name='n' value='v1' type='radio'>1";
+ ret += " <input name='n' value='v2' checked='checked' type='radio'>2";
+ ret += "</body></html>";
+ return ret;
}
}