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+/* Note, there is still stuff in skins/common/edit.js that
+ * has not been jQuery-ized.
+ */
+
+(function( $ ) {
+ //make sure edit summary does not exceed byte limit
+ $( '#wpSummary' ).attr( 'maxLength', 250 ).keypress( function( e ) {
+ // first check to see if this is actually a character key
+ // being pressed.
+ // Based on key-event info from http://unixpapa.com/js/key.html
+ // JQuery should also normalize e.which to be consistent cross-browser,
+ // however the same check is still needed regardless of jQuery.
+
+ if ( e.which === 0 || e.charCode === 0 || e.ctrlKey || e.altKey || e.metaKey ) {
+ return true; //a special key (backspace, etc) so don't interfere.
+ }
+
+ // This basically figures out how many bytes a UTF-16 string (which is what js sees)
+ // will take in UTF-8 by replacing a 2 byte character with 2 *'s, etc, and counting that.
+ // Note, surrogate (\uD800-\uDFFF) characters are counted as 2 bytes, since there's two of them
+ // and the actual character takes 4 bytes in UTF-8 (2*2=4). Might not work perfectly in edge cases
+ // such as illegal sequences, but that should never happen.
+
+ var len = this.value.replace( /[\u0080-\u07FF\uD800-\uDFFF]/g, '**' ).replace( /[\u0800-\uD7FF\uE000-\uFFFF]/g, '***' ).length;
+ //247 as this doesn't count character about to be inserted.
+ if ( len > 247 ) {
+ e.preventDefault();
+ }
+ });
+})(jQuery);