Checking in Sources/Docs of DOM Level 2 from :

http://www.w3.org/DOM/DOMTM git-svn-id: https://svn.apache.org/repos/asf/xml/commons/trunk@225913 13f79535-47bb-0310-9956-ffa450edef68
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+<?xml version="1.0" encoding="utf-8"?>
+<!-- CSSRule interface -->
+
+<interface name="CSSRule" id="CSS-CSSRule" since="DOM Level 2">
+  <descr>
+    <p>
+      The <code>CSSRule</code> interface is the abstract base interface for any
+      type of CSS <xspecref
+      href="&css2;/syndata.html#q5">statement</xspecref>.
+      This includes both <xspecref
+      href="&css2;/syndata.html#q8">rule sets</xspecref>
+      and <xspecref
+      href="&css2;/syndata.html#at-rules">at-rules</xspecref>. An
+      implementation is expected to preserve all rules specified in a CSS style
+      sheet, even if the rule is not recognized by the parser. Unrecognized
+      rules are represented using the <code>CSSUnknownRule</code> interface.
+    </p>
+  </descr>
+  
+  <group id="CSS-CSSRule-ruleType" name="RuleType">
+    <descr><p>An integer indicating which type of rule this is.</p></descr>
+    <constant name="UNKNOWN_RULE" type="unsigned short" value="0">
+      <descr><p>The rule is a <code>CSSUnknownRule</code>.</p></descr>
+    </constant>
+    <constant name="STYLE_RULE" type="unsigned short" value="1">
+      <descr><p>The rule is a <code>CSSStyleRule</code>.</p></descr>
+    </constant>
+    <constant name="CHARSET_RULE" type="unsigned short" value="2">
+      <descr><p>The rule is a <code>CSSCharsetRule</code>.</p></descr>
+    </constant>
+    <constant name="IMPORT_RULE" type="unsigned short" value="3">
+      <descr><p>The rule is a <code>CSSImportRule</code>.</p></descr>
+    </constant>
+    <constant name="MEDIA_RULE" type="unsigned short" value="4">
+      <descr><p>The rule is a <code>CSSMediaRule</code>.</p></descr>
+    </constant>
+    <constant name="FONT_FACE_RULE" type="unsigned short" value="5">
+      <descr><p>The rule is a <code>CSSFontFaceRule</code>.</p></descr>
+    </constant>
+    <constant name="PAGE_RULE" type="unsigned short" value="6">
+      <descr><p>The rule is a <code>CSSPageRule</code>.</p></descr>
+    </constant>
+  </group>
+  
+  <attribute type="unsigned short" readonly="yes" name="type" id="CSS-CSSRule-type">
+    <descr>
+      <p>
+	The type of the rule, as defined above. The expectation is that
+	binding-specific casting methods can be used to cast down from an
+	instance of the <code>CSSRule</code> interface to the specific derived
+	interface implied by the <code>type</code>.
+      </p>
+    </descr>
+  </attribute>
+  
+  <attribute type="DOMString" name="cssText" id="CSS-CSSRule-cssText">
+    <descr>
+      <p>
+	The parsable textual representation of the rule. This reflects the
+	current state of the rule and not its initial value.
+      </p>
+    </descr>
+    <setraises>
+      <exception name="DOMException">
+        <descr>
+          <p>SYNTAX_ERR: Raised if the specified CSS string value has a syntax
+	    error and is unparsable.</p> 
+          <p>INVALID_MODIFICATION_ERR: Raised if the specified CSS string value
+	    represents a different type of rule than the current one.</p> 
+	  <p>HIERARCHY_REQUEST_ERR: Raised if the rule cannot be inserted at
+	    this point in the style sheet.</p>
+	  <p>NO_MODIFICATION_ALLOWED_ERR: Raised if the rule is readonly.</p>
+        </descr>  
+      </exception>       
+    </setraises>
+  </attribute>
+  
+  <attribute type="CSSStyleSheet" readonly="yes" name="parentStyleSheet" id="CSS-CSSRule-sheet">
+    <descr>
+      <p>
+	The style sheet that contains this rule.
+      </p>
+    </descr>
+  </attribute>
+  
+  <attribute type="CSSRule" readonly="yes" name="parentRule" id="CSS-CSSRule-parentRule">
+    <descr>
+      <p>
+	If this rule is contained inside another rule (e.g. a style rule inside
+	an @media block), this is the containing rule. If this rule is not
+	nested inside any other rules, this returns <code>null</code>.
+      </p>
+    </descr>
+  </attribute>
+  
+</interface>