[css-pseudo-4] Remove CSSPseudoElement .style attribute and support for other than ::before/::after. w3c#3540 Also add/remove some notes about issues to reflect current status.

Author: fantasai

css-pseudo-4/Overview.bs

@@ -833,46 +833,17 @@ Overlapping Pseudo-element Interactions</h2>
 <h2 id="cssom">
 Additions to the CSS Object Model</h2>
 
-  Pseudo-elements should be reachable by script,
-  stylable from script,
-  and available as event targets.
-
-  <p class="note"><span class="note-prefix">Note </span>We may extend this
-    section in the future to allow creation of pseudo-elements from script.
-
-  Issue: This entire section is a starting point for discussion.
-  Feedback is welcome.
-  Implementations, at this point, are not,
-  as we are not yet sure of our approach.
-
-  Issue: This needs to be merged with the alternative
-  {{PseudoElement}} and {{Element/pseudo()}} proposal.
-
 <h3 id="CSSPseudoElement-interface">
 Interface CSSPseudoElement</h3>
 
   The <code>CSSPseudoElement</code> interface
-  allows pseudo-elements to be styleable from script
-  and makes them event targets.
-
-  <div class="issue">
-    The approach in this draft
-    is to start with a bare minimum
-    for the CSSPseudoElement interface
-    and build up from there.
-    Another more radical approach
-    could take everything that's common
-    between a pseudo-element and a node
-    and create a new base class
-    for both Node and CSSPseudoElement.
-  </div>
+  allows pseudo-elements to be event targets.
 
   <pre class="idl">
     [Exposed=Window]
     interface CSSPseudoElement : EventTarget {
         readonly attribute CSSOMString <a href="#dom-csspseudochild-type">type</a>;
         readonly attribute Element element;
-        readonly attribute <a href="https://www.w3.org/TR/DOM-Level-2-Style/css.html#CSS-CSSStyleDeclaration">CSSStyleDeclaration</a> <a href="#dom-csspseudochild-style">style</a>;
     };
   </pre>
 
@@ -885,24 +856,17 @@ Interface CSSPseudoElement</h3>
     <dd>The pseudo-element was created before the element's contents.
     <dt>‘::after’
     <dd>The pseudo-element was created after the element's contents.
-    <dt>‘::first-letter’
-    <dd>The pseudo-element is the first letter of the element.
-    <dt>‘::first-line’
-    <dd>The pseudo-element is the first line of the element.
-    <dt>‘::selection’
-    <dd>The selection pseudo-element for the element.
   </dl>
 
   The <dfn attribute for=CSSPseudoElement>element</dfn> attribute is the
   [=originating element=] of the pseudo-element.
 
-  The <dfn attribute for=CSSPseudoElement>style</dfn> attribute
-  is a <code>CSSStyleDeclaration</code> [[!CSSOM]]
-  that allows directly setting style information (inline styles) onto the pseudo-element.
-  Declarations set via this mechanism
-  follow the same cascading rules
-  (i.e. those of a <a href="https://www.w3.org/TR/css-style-attr/#interpret">style attribute</a>)
-  as on regular <code>Element</code>s.
+  Note: This interface may be extended in the future
+  to other pseudo-element types
+  and/or to allow setting style information
+  through a <code>CSSStyleDeclaration</code> <code>style</code> attribute.
+  The current functionality is limited
+  to that which is needed to support [[web-animations-1]].
 
 <h3 id="window-interface">
 Addition to the <code>Element</code> interface</h3>
@@ -924,6 +888,12 @@ Addition to the <code>Element</code> interface</h3>
   Pseudo-elements of unsupported types are considered to simply not exist;
   unrecognized <code>type</code> values are not an error.
 
+  ISSUE: The identity, lifetime, and nullness of the return value
+  (and potential error cases)
+  of the <code>pseudo()</code> method is still under discussion.
+  See <a href="https://github.com/w3c/csswg-drafts/issues/3607">Issue 3607</a>
+  and <a href="https://github.com/w3c/csswg-drafts/issues/3603">Issue 3603</a>.
+
 <h2 id="css2-compat">
 Compatibilitiy Syntax</h2>