MediaWiki 1.17.0

[autoinstallsdev/mediawiki.git] / resources / mediawiki.action / mediawiki.action.edit.js

diff --git a/resources/mediawiki.action/mediawiki.action.edit.js b/resources/mediawiki.action/mediawiki.action.edit.js
new file mode 100644 (file)
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+++ b/resources/mediawiki.action/mediawiki.action.edit.js
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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);