[css-variables] Remove the CSSVariablesMap.

Author: tabatkins

css-variables/Overview.bs

@@ -12,7 +12,6 @@ Previous Version: http://www.w3.org/TR/2012/WD-css-variables-20120410/
 Editor: Tab Atkins Jr., Google, http://xanthir.com/contact
 Abstract: This module introduces cascading variables as a new primitive value type that is accepted by all CSS properties, and custom properties for defining them.
 Ignored Terms: --0, --foo, --main-color, --Bar, --two, --header-color, --accent-background, --foo-bar, --bar, --one, var, <ident>, declarations, case-insensitive, getproperty()
-At Risk: the <a interface>CSSVariablesMap</a> interface
 Link Defaults: css-color-3 (property) color, cssom-1 (interface) cssstyledeclaration
 </pre>
 
@@ -604,29 +603,13 @@ AAAAAAA                   AAAAAAAPPPPPPPPPP          IIIIIIIIII
 <h2 id='cssom'>
 APIs</h2>
 
-<h3 id='the-cssstyledeclaration-interface'>
-Extensions to the <code>CSSStyleDeclaration</code> Interface</h3>
-
-	The <dfn><code>CSSStyleDeclaration</code></dfn> interface is amended as follows:
-
-	<pre class='idl'>
-	partial interface CSSStyleDeclaration {
-		readonly attribute CSSVariablesMap var;
-	};
-	</pre>
-
-	A <code>CSSStyleDeclaration</code> is the <dfn>associated style declaration</dfn>
-	for the <code>CSSVariablesMap</code> assigned to its <code>var</code> attribute.
-
 	All <a>custom property</a> <a>declarations</a> have the <a>case-insensitive</a> flag set.
 
 	Note: Custom properties do not appear on a CSSStyleDeclaration object in camel-cased form,
 	because their names may have both upper and lower case letters
 	which indicate distinct custom properties.
 	The sort of text transformation that automatic camel-casing performs is incompatible with this.
-	They can still be accessed by their proper name via <a method>getProperty()</a>/etc,
-	or by the <a interface>CSSVariablesMap</a> interface defined below.
-
+	They can still be accessed by their proper name via <a method>getProperty()</a>/etc.
 
 <h4 id='serializing-custom-props'>
 Serializing Custom Properties</h4>
@@ -637,147 +620,10 @@ Serializing Custom Properties</h4>
 		Ordinarily, property names are restricted to the ASCII range and are case-insensitive,
 		so implementations typically serialize the name lowercased.
 
-<h3 id='the-CSSVariablesMap-interface'>
-The <code>CSSVariablesMap</code> Interface</h3>
-
-	The <dfn><code>CSSVariablesMap</code></dfn> interface
-	exposes the <a>custom properties</a> declared in the parent declaration block
-	that have a non-initial value.
-
-	<pre class='idl'>
-	[MapClass(DOMString, DOMString)]
-	interface CSSVariablesMap {
-		DOMString get(DOMString varName);
-		boolean has(DOMString varName);
-		CSSVariablesMap set(DOMString varName, DOMString varValue);
-		boolean delete(DOMString varName);
-	};
-	</pre>
-
-	The <a href="http://dev.w3.org/2006/webapi/WebIDL/#MapClass">map entries</a>
-	on a CSSVariablesMap object
-	are the property names of all the <a>custom properties</a> in the <a href="http://dev.w3.org/csswg/cssom/#css-declaration-block-declarations">CSS declaration block declarations</a>
-	with a non-initial value,
-	with the "--" prefix removed,
-	paired with their values.
-
-<h4 id='cssvariablesmap-methods'>
-<code>CSSVariablesMap Methods</code></h4>
-
-	<dl>
-		<dt>get(DOMString varName), returns DOMString
-		<dd>
-			Prepend "--" to <var>varName</var>.
-			Invoke <code>getPropertyValue()</code>
-			on the <a>associated style declaration</a>
-			by passing <var>varName</var> as its argument,
-			and return its returned value.
-
-		<dt>has(DOMString varName), returns boolean
-		<dd>
-			Invoke get() on the CSSVariablesMap object
-			by passing <var>varName</var> as its argument.
-			If the return value is the empty string,
-			return <code>false</code>;
-			otherwise, return <code>true</code>.
-
-		<dt>set(DOMString varName, DOMString varValue), returns void
-		<dd>
-			Prepend "--" to <var>varName</var>.
-			Invoke <code>setProperty()</code>
-			on the <a>associated style declaration</a>
-			by passing <var>varName</var> and <var>varValue</var> as its two arguments, in that order.
-			Return the CSSVariablesMap object on which the method was called.
-
-		<dt>delete(DOMString varName), return boolean
-		<dd>
-			Prepend "--" to <var>varName</var>.
-			Invoke <code>removeProperty()</code>
-			on the <a>associated style declaration</a>
-			by passing <var>varName</var> as its argument.
-			If the returned value is the empty string,
-			return <code>false</code>;
-			otherwise, return <code>true</code>.
-	</dl>
-
-	<div class='example'>
-		<style scoped>
-		#--code-examples td { padding: 2px; }
-		#--code-examples code { background: rgba(0,0,0,.05); display: inline-block; padding: 1px 2px; white-space: pre; }
-		</style>
-
-		For example,
-		given the following style sheet:
-
-		<pre>
-		div {
-			--foo: 16px;
-			--Bar: red;
-			--foo-bar: 50%;
-		}
-		</pre>
-
-		Here are the results of several JavaScript expressions,
-		assuming that <code>el</code> is a JavaScript variable
-		holding an element that the above style rule applies to:
-
-		<table id="--code-examples">
-			<thead>
-				<tr>
-					<th>Code
-					<th>Value
-					<th>Notes
-			<tbody>
-				<tr>
-					<td><code>el.style.var.get("foo")</code>
-					<td><code>"16px"</code>
-					<td>The value of '--foo'.
-				<tr>
-					<td><code>el.style.var.get("Bar")</code>
-					<td><code>"red"</code>
-					<td>The value of '--Bar'.
-				<tr>
-					<td><code>el.style.var.get("foo-bar")</code>
-					<td><code>"50%"</code>
-					<td>The value of '--foo-bar'.
-				<tr>
-					<td><code>el.style.varFoo</code>
-					<td>n/a
-					<td>Custom properties don't exist directly on "style"
-				<tr>
-					<td><code>el.style.varBar</code>
-					<td>n/a
-					<td>Not even if the casing matches.
-		</table>
-	</div>
-
-	<div class='example'>
-		Iterating over all of the custom properties
-		(for example, for a JS library to find the ones it knows about and wants to respond to)
-		is also simple with the <code>var</code> property:
-
-		<pre>
-		var customProps = el.style.var;
-		customProps.forEach(function(propValue, propName) {
-			if( knownCustomPropName(propName) ) {
-				/* Processing code here. */
-			}
-		});
-		</pre>
-	</div>
 
 
 <h2 id='changes'>
-Changes from 10 April 2012 Working Draft</h2>
-
-	<ul>
-		<li>The value syntax for custom properties has been nailed down more precisely.
-		<li>Case-sensitivity of custom property names has been defined.
-		<li>The fallback argument was added to the var() function.
-		<li>A property that is invalid at computed-value time now either goes inherit or initial, rather than always initial.
-		<li>CSSVariableComponentValue interface has been dropped, pending the *ComponentValue interfaces being created at all.
-		<li>The CSSVariablesMap interface has been added, which stores all the variables defined by a style rule.
-	</ul>
+Changes</h2>
 
 
 <h2 id="acks">