X-Git-Url: https://scripts.mit.edu/gitweb/autoinstallsdev/mediawiki.git/blobdiff_plain/87219ebd28426c6d21cb545233ee52f5f7af7dfd..18a6620945d02687fbcfc4c27355d952fd748b41:/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
index 00000000..e5b50958
--- /dev/null
+++ b/resources/mediawiki.action/mediawiki.action.edit.js
@@ -0,0 +1,30 @@
+/* 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);