[css-pseudo] remove ordinal and column from OM, add selection

Author: astearns

css-pseudo/Overview.bs

@@ -486,9 +486,10 @@ Styling Highlighted Ranges</h3>
   Only color and bgcolor seem supported; but text-decoration is needed for spellcheck.
 
   If 'color' is not specified, the text's actual color must be used for the highlight.
-  <span class="issue">Can we reuse ''currentColor'' for this, now that it computes to itself?</span>
   (As usual, the initial 'background-color' is ''transparent''.)
 
+  Issue: Can we reuse ''currentColor'' for this, now that it computes to itself?
+
   The UA should use the OS-default selection color
   when neither 'color' nor 'background-color' has been specified by the author.
 
@@ -645,50 +646,36 @@ Interface CSSPseudoElement</h3>
 
   <pre class="idl">
     interface CSSPseudoElement {
-        readonly attribute unsigned long <a href="#dom-csspseudochild-ordinal">ordinal</a>;
-                                         // the ordinal of a column is its index
         readonly attribute DOMString <a href="#dom-csspseudochild-type">type</a>;
         readonly attribute <a href="http://www.w3.org/TR/DOM-Level-2-Style/css.html#CSS-CSSStyleDeclaration">CSSStyleDeclaration</a> <a href="#dom-csspseudochild-style">style</a>;
     };
 
     CSSPseudoElement implements EventTarget;
   </pre>
 
-  The <dfn id="dom-csspseudochild-ordinal">ordinal</dfn> attribute
-  represents the ordinal of the pseudo-element for the object's type.
-  It is a strictly positive integer.
-  The value <code>1</code> for the <code>before</code>&nbsp;
-  (or <code>after</code>, <code>letter</code> and <code>line</code>)
-  types represents the ''::before'' (or ''::after'',
-  ''::first-letter'' and ''::first-line'')
-  pseudo-elements.
   The <dfn id="dom-csspseudochild-type">type</dfn> attribute
   is a string representing the type of the pseudo-element.
   This can be one of the following values:
 
   <dl>
     <dt>‘before’
-    <dd>The pseudo-element was created before the element's contents
+    <dd>The pseudo-element was created before the element's contents.
     <dt>‘after’
-    <dd>The pseudo-element was created after the element's contents
+    <dd>The pseudo-element was created after the element's contents.
     <dt>‘letter’
-    <dd>The pseudo-element is the first letter of the element;
-    the only valid ordinal is 1.
+    <dd>The pseudo-element is the first letter of the element.
     <dt>‘line’
-    <dd>The pseudo-element is the first line of the element;
-    the only valid ordinal is 1.
-    <dt>‘column’
-    <dd>The pseudo-element is a column created by the element through
-    the CSS Multi-column Layout Module.
-    In that case its <code>ordinal</code> is
-    the index of column in the collection of columns created by the element.
+    <dd>The pseudo-element is the first line of the element.
+    <dt>‘selection’
+    <dd>The selection pseudo-element for the element.
   </dl>
 
   The <dfn id="dom-csspseudochild-style">style</dfn> attribute
   is a <code>CSSStyleDeclaration</code> [[!CSSOM]]
   that allows directly setting style information (inline styles) onto the pseudo-element.
   Inline styles on a <code>CSSPseudoElement</code> have precedence over all
   style rules styling that pseudo-element.
+  
   Issue: This should cascade like actual inline styles, not be a different thing.
 
   The <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget"><code>EventTarget</code></a> interface [[!DOM-LEVEL-2-EVENTS]]
@@ -705,10 +692,9 @@ Interface CSSPseudoElementList</h3>
     interface CSSPseudoElementList {
         readonly attribute unsigned long <a href="#dom-csspseudochildlist-length">length</a>;
         CSSPseudoElement <a href="#dom-csspseudochildlist-item">item</a>(unsigned long index);
-        CSSPseudoElement <a href="#dom-csspseudochildlist-getbyordinalandtype">getByOrdinalAndType</a>(unsigned long ordinal,
-                                                 DOMString type);
-                         // replies null if no pseudo-element does not exist for
-                         //     the requested ordinal and type
+        CSSPseudoElement <a href="#dom-csspseudochildlist-getbytype">getByType</a>(DOMString type);
+                         // replies null if no pseudo-element exists for
+                         //     the requested type
     };
   </pre>
 
@@ -721,14 +707,14 @@ Interface CSSPseudoElementList</h3>
   Its return value is the <code>CSSPseudo</code><code>Element</code>
   at the requested index in the collection
   or null if that is not a valid index.
-  The method <dfn id="dom-csspseudochildlist-getbyordinalandtype">getByOrdinalAndType()</dfn>
+  
+  The method <dfn id="dom-csspseudochildlist-getbytype">getByType()</dfn>
   is used to retrieve a <code>CSSPseudo</code><code>Element</code>
-  by its ordinal and type.
-  It takes two parameters: first, the requested ordinal; second a type.
+  by its type.
   Its return value is the <code>CSSPseudo</code><code>Element</code>
-  at the requested index in the collection
+  in the collection that matches the type
   or null if there is no <code>CSSPseudo</code><code>Element</code>
-  in the collection for that index and type.
+  in the collection for that type.
 
 <h3 id="window-interface">
 Addition to the <code>window</code> interface</h3>