From 24225e880a4e81aec5c8ffabbf86b3b30e51aafd Mon Sep 17 00:00:00 2001
From: Krinkle <krinkle@users.mediawiki.org>
Date: Sat, 23 Oct 2010 21:08:58 +0000
Subject: [PATCH] added string trimming for older browsers

---
 resources/mediawiki/mediawiki.js      | 53 +++++++++++++++++++--------
 resources/mediawiki/mediawiki.util.js | 31 +++++++++++++++-
 2 files changed, 67 insertions(+), 17 deletions(-)

diff --git a/resources/mediawiki/mediawiki.js b/resources/mediawiki/mediawiki.js
index 3350bb21ad..ea452d648c 100644
--- a/resources/mediawiki/mediawiki.js
+++ b/resources/mediawiki/mediawiki.js
@@ -2,30 +2,39 @@
  * JavaScript backwards-compatibility and support
  */
 
-// Make calling .indexOf() on an array work on older browsers
-if ( typeof Array.prototype.indexOf === 'undefined' ) {
-	Array.prototype.indexOf = function( needle ) {
-		for ( var i = 0; i < this.length; i++ ) {
-			if ( this[i] === needle ) {
-				return i;
-			}
-		}
-		return -1;
+// New fallback String trimming functionality, was introduced natively in JavaScript 1.8.1
+if (typeof String.prototype.trimx === 'undefined') {
+// Add removing trailing and leading whitespace functionality cross-browser
+// See also: http://blog.stevenlevithan.com/archives/faster-trim-javascript
+	String.prototype.trim = function () {
+		return this.replace(/^\s+|\s+$/g, ''); 
+	};
+}
+if (typeof String.prototype.trimLeft === 'undefined') {
+	String.prototype.trimLeft = function () {
+		return this.replace(/^\s\s*/, "");
+	};
+}
+ 
+if (typeof String.prototype.trimRight === 'undefined') {
+	String.prototype.trimRight = function () {
+		return this.replace(/\s\s*$/, "");
 	};
 }
+
 // Add array comparison functionality
-if ( typeof Array.prototype.compare === 'undefined' ) {
-	Array.prototype.compare = function( against ) {
-		if ( this.length != against.length ) {
+if (typeof Array.prototype.compare === 'undefined') {
+	Array.prototype.compare = function (against) {
+		if (this.length !== against.length) {
 			return false;
 		}
-		for ( var i = 0; i < against.length; i++ ) {
-			if ( this[i].compare ) {
-				if ( !this[i].compare( against[i] ) ) {
+		for (var i = 0; i < against.length; i++) {
+			if (this[i].compare) {
+				if (!this[i].compare(against[i])) {
 					return false;
 				}
 			}
-			if ( this[i] !== against[i] ) {
+			if (this[i] !== against[i]) {
 				return false;
 			}
 		}
@@ -33,6 +42,18 @@ if ( typeof Array.prototype.compare === 'undefined' ) {
 	};
 }
 
+// Make calling .indexOf() on an array work on older browsers
+if (typeof Array.prototype.indexOf === 'undefined') {
+	Array.prototype.indexOf = function (needle) {
+		for (var i = 0; i < this.length; i++) {
+			if (this[i] === needle) {
+				return i;
+			}
+		}
+		return -1;
+	};
+}
+
 /*
  * Core MediaWiki JavaScript Library
  */
diff --git a/resources/mediawiki/mediawiki.util.js b/resources/mediawiki/mediawiki.util.js
index 5ebf9ed799..dd501fe718 100644
--- a/resources/mediawiki/mediawiki.util.js
+++ b/resources/mediawiki/mediawiki.util.js
@@ -1,4 +1,3 @@
-/*jslint white: true, browser: true, nomen: true, eqeqeq: true, plusplus: true, bitwise: true, regexp: true, newcap: true */
 /*
  * Utilities
  */
@@ -44,6 +43,13 @@
 					return $box;
 				};
 				
+				// Prototype enhancements
+				if (typeof String.prototype.ucFirst === 'undefined') {
+					String.prototype.ucFirst = function () {
+						return this.substr(0, 1).toUpperCase() + this.substr(1, this.length);
+					};
+				}
+				
 				// Any initialisation after the DOM is ready
 				$(function () {
 					$('input[type=checkbox]:not(.noshiftselect)').enableCheckboxShiftClick();				
@@ -88,6 +94,29 @@
 			return wgServer + wgArticlePath.replace('$1', this.wikiUrlencode(str));
 		},
 
+		/**
+		* Check is a variable is empty. Support for strings, booleans, arrays and objects.
+		* String "0" is considered empty. String containing only whitespace (ie. "  ") is considered not empty. 
+		*
+		* @param Mixed v	the variable to check for empty ness
+		*/
+		'isEmpty' : function (v) {
+			var key;
+			if (v === "" || v === 0 || v === "0" || v === null || v === false || typeof v === 'undefined') {
+				return true;
+			}
+			if (v.length === 0) {
+				return true;
+			}
+			if (typeof v === 'object') {
+				for (key in v) {
+					return false;
+				}
+				return true;
+			}
+			return false;
+		},
+
 
 		/**
 		* Grabs the url parameter value for the given parameter
-- 
2.20.1