[cssom] The last decl doesn't win in case of \!important. <http://www.w3.org/mid/52089124.1070906@exyr.org>

Author: Simon Pieters

cssom/Overview.html

@@ -16,7 +16,7 @@
  <h1>CSS Object Model (CSSOM)</h1>
 
 
- <h2 class="no-num no-toc" id="w3c-doctype">Editor's Draft 9 August 2013</h2>
+ <h2 class="no-num no-toc" id="w3c-doctype">Editor's Draft 12 August 2013</h2>
 
  <dl>
 
@@ -90,7 +90,7 @@ <h2 class="no-num no-toc" id="sotd">Status of This Document</h2>
 can be found in the
 <a href="http://www.w3.org/TR/">W3C technical reports index at http://www.w3.org/TR/.</a></em>
 
-<p class="dontpublish">This is the 9 August 2013 Editor's Draft of CSSOM. Please send comments to
+<p class="dontpublish">This is the 12 August 2013 Editor's Draft of CSSOM. Please send comments to
 <a href="mailto:www-style@w3.org?subject=%5Bcssom%5D%20">www-style@w3.org</a>
 (<a href="http://lists.w3.org/Archives/Public/www-style/">archived</a>)
 with <samp>[cssom]</samp> at the start of the subject line.
@@ -1959,11 +1959,12 @@ <h4 id="the-cssstylerule-interface"><span class="secno">6.4.3 </span>The <code t
 </ol>
 
 <p>The <dfn id="dom-cssstylerule-style" title="dom-CSSStyleRule-style"><code>style</code></dfn> attribute must return a <code><a href="#cssstyledeclaration">CSSStyleDeclaration</a></code> object for the style rule, with the
-<a href="#concept-css-declaration-block-declarations" title="concept-css-declaration-block-declarations">declarations</a> being the declared declarations in the rule, in the same order as they were
-specified, with shorthand properties expanded into their longhand properties, in canonical order. If a property is specified more than once, it must be
-represented as one item in the <a href="#concept-css-declaration-block-declarations" title="concept-css-declaration-block-declarations">declarations</a> at the position of the last declaration for that
-property.</p>
+<a href="#concept-css-declaration-block-declarations" title="concept-css-declaration-block-declarations">declarations</a> being the declared declarations in the rule, in
+<a href="#concept-declarations-specified-order" title="concept-declarations-specified-order">specified order</a>.</p>
 
+<p>The <dfn id="concept-declarations-specified-order" title="concept-declarations-specified-order">specified order</dfn> for declarations is the same as specified, but with shorthand properties
+expanded into their longhand properties, in canonical order. If a property is specified more than once (after shorthand expansion), only the
+one with greatest cascading order must be represented, at the same relative position as it was specified. <a href="#refsCSSCASCADE">[CSSCASCADE]</a>
 
 <h4 id="the-csscharsetrule-interface"><span class="secno">6.4.4 </span>The <code title="">CSSCharsetRule</code> Interface</h4>
 
@@ -2231,9 +2232,8 @@ <h4 id="the-cssstyledeclaration-interface"><span class="secno">6.5.1 </span>The
  a <code class="external" data-anolis-spec="dom"><a href="http://dom.spec.whatwg.org/#nomodificationallowederror">NoModificationAllowedError</a></code> exception and terminate these steps.</li>
  <li><p>Empty the <a href="#concept-css-declaration-block-declarations" title="concept-css-declaration-block-declarations">declarations</a>.</li>
  <li><p><a href="#parse-a-css-declaration-block" title="Parse a CSS declaration block">Parse</a> the given value and, if the return value is not the empty list, insert the items in the list
- into the <a href="#concept-css-declaration-block-declarations" title="concept-css-declaration-block-declarations">declarations</a>, in the same order as they were specified, with shorthand properties
- expanded into their longhand properties, in canonical order. If a property is specified more than once, it must be represented as one item in the
- <a href="#concept-css-declaration-block-declarations" title="concept-css-declaration-block-declarations">declarations</a> at the position of the last declaration for that property.</li>
+ into the <a href="#concept-css-declaration-block-declarations" title="concept-css-declaration-block-declarations">declarations</a>, in <a href="#concept-declarations-specified-order" title="concept-declarations-specified-order">specified
+ order</a>.</li>
 </ol>
 
 <p>The <dfn id="dom-cssstyledeclaration-length" title="dom-CSSStyleDeclaration-length"><code>length</code></dfn> attribute must return the number of declarations in the
@@ -2731,9 +2731,7 @@ <h3 id="the-elementcssinlinestyle-interface"><span class="secno">7.1 </span>The
 
 <p>The <dfn id="dom-elementcssinlinestyle-style" title="dom-ElementCSSInlineStyle-style"><code>style</code></dfn> attribute must return a <a href="#css-declaration-block">CSS declaration block</a> with the
 <a href="#concept-css-declaration-block-declarations" title="concept-css-declaration-block-declarations">declarations</a> being set to the result of <a href="#parse-a-css-declaration-block" title="Parse a CSS declaration block">parsing</a>
-the <code title="">style</code> content attribute, in the same order as specified, with shorthand properties expanded to their longhand properties, in canonical
-order. If a property is specified more than once, it must be represented as one item in the
-<a href="#concept-css-declaration-block-declarations" title="concept-css-declaration-block-declarations">declarations</a> at the position of the last declaration for that property. If the
+the <code title="">style</code> content attribute, in <a href="#concept-declarations-specified-order" title="concept-declarations-specified-order">specified order</a>. If the
 <code title="">style</code> content attribute is absent, the object represents an empty list of
 declarations. Mutating the <code><a href="#cssstyledeclaration">CSSStyleDeclaration</a></code> object must set the
 <code title="">style</code> content attribute on the element to the
@@ -2988,6 +2986,9 @@ <h2 class="no-num" id="references">References</h2>
 <div id="anolis-references"><dl><dt id="refsCSS">[CSS]
 <dd><cite><a href="http://www.w3.org/TR/CSS2/">CSS</a></cite>, Bert Bos, Tantek Çelik, Ian Hickson et al.. W3C.
 
+<dt id="refsCSSCASCADE">[CSSCASCADE]
+<dd><cite><a href="http://dev.w3.org/csswg/css-cascade/">CSS Cascading and Inheritance</a></cite>, Håkon Wium Lie, fantasai and Tab Atkins Jr..
+
 <dt id="refsCSSNAMESPACES">[CSSNAMESPACES]
 <dd><cite><a href="http://dev.w3.org/csswg/css-namespaces/">CSS Namespaces Module</a></cite>, Elika J. Etemad and Anne van Kesteren. W3C.
 
@@ -3065,6 +3066,7 @@ <h2 class="no-num" id="acknowledgments">Acknowledgments</h2>
 Øyvind Stenhaug,
 Philip Taylor,
 Robert O'Callahan,
+Simon Sapin,
 Sjoerd Visscher,
 <!--Simon Pieters,-->
 Sylvain Galineau,

cssom/Overview.src.html

@@ -1881,11 +1881,12 @@ <h4>The <code title>CSSStyleRule</code> Interface</h4>
 </ol>
 
 <p>The <dfn title=dom-CSSStyleRule-style><code>style</code></dfn> attribute must return a <code>CSSStyleDeclaration</code> object for the style rule, with the
-<span title=concept-css-declaration-block-declarations>declarations</span> being the declared declarations in the rule, in the same order as they were
-specified, with shorthand properties expanded into their longhand properties, in canonical order. If a property is specified more than once, it must be
-represented as one item in the <span title=concept-css-declaration-block-declarations>declarations</span> at the position of the last declaration for that
-property.</p>
+<span title=concept-css-declaration-block-declarations>declarations</span> being the declared declarations in the rule, in
+<span title=concept-declarations-specified-order>specified order</span>.</p>
 
+<p>The <dfn title=concept-declarations-specified-order>specified order</dfn> for declarations is the same as specified, but with shorthand properties
+expanded into their longhand properties, in canonical order. If a property is specified more than once (after shorthand expansion), only the
+one with greatest cascading order must be represented, at the same relative position as it was specified. <span data-anolis-ref>CSSCASCADE</span>
 
 <h4>The <code title>CSSCharsetRule</code> Interface</h4>
 
@@ -2153,9 +2154,8 @@ <h4>The <code title>CSSStyleDeclaration</code> Interface</h4>
  a <code data-anolis-spec=dom>NoModificationAllowedError</code> exception and terminate these steps.</li>
  <li><p>Empty the <span title=concept-css-declaration-block-declarations>declarations</span>.</li>
  <li><p><span title='Parse a CSS declaration block'>Parse</span> the given value and, if the return value is not the empty list, insert the items in the list
- into the <span title=concept-css-declaration-block-declarations>declarations</span>, in the same order as they were specified, with shorthand properties
- expanded into their longhand properties, in canonical order. If a property is specified more than once, it must be represented as one item in the
- <span title=concept-css-declaration-block-declarations>declarations</span> at the position of the last declaration for that property.</p></li>
+ into the <span title=concept-css-declaration-block-declarations>declarations</span>, in <span title=concept-declarations-specified-order>specified
+ order</span>.</p></li>
 </ol>
 
 <p>The <dfn title=dom-CSSStyleDeclaration-length><code>length</code></dfn> attribute must return the number of declarations in the
@@ -2653,9 +2653,7 @@ <h3>The <code>ElementCSSInlineStyle</code> Interface</h3>
 
 <p>The <dfn title=dom-ElementCSSInlineStyle-style><code>style</code></dfn> attribute must return a <span>CSS declaration block</span> with the
 <span title=concept-css-declaration-block-declarations>declarations</span> being set to the result of <span title='Parse a CSS declaration block'>parsing</span>
-the <code title>style</code> content attribute, in the same order as specified, with shorthand properties expanded to their longhand properties, in canonical
-order. If a property is specified more than once, it must be represented as one item in the
-<span title=concept-css-declaration-block-declarations>declarations</span> at the position of the last declaration for that property. If the
+the <code title>style</code> content attribute, in <span title=concept-declarations-specified-order>specified order</span>. If the
 <code title>style</code> content attribute is absent, the object represents an empty list of
 declarations. Mutating the <code>CSSStyleDeclaration</code> object must set the
 <code title>style</code> content attribute on the element to the
@@ -2942,6 +2940,7 @@ <h2 class="no-num">Acknowledgments</h2>
 Øyvind Stenhaug,
 Philip Taylor,
 Robert O'Callahan,
+Simon Sapin,
 Sjoerd Visscher,
 <!--Simon Pieters,-->
 Sylvain Galineau,