* HTML-specific logic. For instance, there is no $allowShortTag
* parameter: the closing tag is magically omitted if $element has an empty
* content model. If $wgWellFormedXml is false, then a few bytes will be
- * shaved off the HTML output as well. In the future, other HTML-specific
- * features might be added, like allowing arrays for the values of
- * attributes like class= and media=.
+ * shaved off the HTML output as well.
*
* @param $element string The element's name, e.g., 'a'
* @param $attribs array Associative array of attributes, e.g., array(
continue;
}
+ // http://www.w3.org/TR/html401/index/attributes.html ("space-separated")
+ // http://www.w3.org/TR/html5/index.html#attributes-1 ("space-separated")
+ $spaceSeparatedListAttributes = array(
+ 'class', // html4, html5
+ 'accesskey', // as of html5, multiple space-separated values allowed
+ // html4-spec doesn't document rel= as space-separated
+ // but has been used like that and is now documented as such
+ // in the html5-spec.
+ 'rel',
+ );
+
+ # Specific features for attributes that allow a list of space-separated values
+ if ( in_array( $key, $spaceSeparatedListAttributes ) ) {
+ // Apply some normalization and remove duplicates
+
+ // Convert into correct array. Array can contain space-seperated
+ // values. Implode/explode to get those into the main array as well.
+ if ( is_array( $value ) ) {
+ // If input wasn't an array, we can skip this step
+ $value = implode( ' ', $value );
+ }
+ $value = explode( ' ', $value );
+
+ // Normalize spacing by fixing up cases where people used
+ // more than 1 space and/or a trailing/leading space
+ $value = array_diff( $value, array( '', ' ') );
+
+ // Remove duplicates and create the string
+ $value = implode( ' ', array_unique( $value ) );
+ }
+
# See the "Attributes" section in the HTML syntax part of HTML5,
# 9.1.2.3 as of 2009-08-10. Most attributes can have quotation
# marks omitted, but not all. (Although a literal " is not