10000 [cssom] Define legacy CSSStyleSheet methods as implemented in Blink. · w3c/csswg-drafts@ffe6f2b · GitHub
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[cssom] Define legacy CSSStyleSheet methods as implemented in Blink.
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‎cssom-1/Overview.bs‎

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@@ -911,6 +911,10 @@ interface CSSStyleSheet : StyleSheet {
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[SameObject] readonly attribute CSSRuleList cssRules;
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unsigned long insertRule(CSSOMString rule, optional unsigned long index = 0);
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void deleteRule(unsigned long index);
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[SameObject] readonly attribute CSSRuleList rules;
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long addRule(optional DOMString selector = "undefined", optional DOMString style = "undefined", optional unsigned long index);
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void removeRule(optional unsigned long index = 0);
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};
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</pre>
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@@ -949,6 +953,25 @@ The <dfn method for=CSSStyleSheet>deleteRule(<var>index</var>)</dfn> method must
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<li><a>Remove a CSS rule</a> in the <a for=CSSStyleSheet>CSS rules</a> at <var>index</var>.
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</ol>
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Legacy CSSStyleSheet members
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----------------------------
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The <dfn attribute for=CSSStyleSheet>rules</dfn> attribute must follow the same steps as {{CSSStyleSheet/cssRules}}, and return the same object {{CSSStyleSheet/cssRules}} would return.
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The <dfn attribute for=CSSStyleSheet>removeRule(<var>index</var>)</dfn> method must run the same steps as {{CSSStyleSheet/deleteRule()}}.
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The <dfn method for=CSSStyleSheet>addRule(<var>selector</var>, <var>block</var>, <var>optionalIndex</var>)</dfn> method must run the following steps:
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<ol>
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<li>Let <var>rule</var> be an empty string.
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<li>Append <var>selector</var> to <var>rule</var>.
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<li>Append <code>" { "</code> to <var>rule</var>.
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<li>If <var>block</var> is not empty, append <var>block</var>, followed by an space, to <var>rule</var>.
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<li>Append <code>"}"</code> to <var>rule</var>
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<li>Let <var>index</var> be <var>optionalIndex</var> if provided, or the number of <a for=CSSStyleSheet>CSS rules</a> in the stylesheet otherwise.
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<li>Call {{CSSStyleSheet/insertRule()}}, with <var>rule</var> and <var>index</var> as arguments.
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</ol>
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CSS Style Sheet Collections {#css-style-sheet-collections}
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----------------------------------------------------------
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