From 2838c11ea8fa1bd8dfffe27a6e28dee6d3e0d423 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Scott=20Gonz=C3=A1lez?= <scott.gonzalez@gmail.com>
Date: Wed, 18 Aug 2010 14:51:30 -0400
Subject: [PATCH] Button: Read disabled attribute from original element if
 disabled option is null. Fixes #5252 -Button: read disabled option from input
 elements.

---
 tests/unit/button/button_defaults.js |  2 +-
 tests/unit/button/button_options.js  | 24 ++++++++++++++++++++++++
 ui/jquery.ui.button.js               |  5 +++++
 3 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/tests/unit/button/button_defaults.js b/tests/unit/button/button_defaults.js
index e1657854a..b81fa7cbb 100644
--- a/tests/unit/button/button_defaults.js
+++ b/tests/unit/button/button_defaults.js
@@ -3,7 +3,7 @@
  */
 
 var button_defaults = {
-	disabled: false,
+	disabled: null,
 	text: true,
 	label: null,
 	icons: {
diff --git a/tests/unit/button/button_options.js b/tests/unit/button/button_options.js
index 6ee8ab541..5b25ecd63 100644
--- a/tests/unit/button/button_options.js
+++ b/tests/unit/button/button_options.js
@@ -5,6 +5,30 @@
 
 module("button: options");
 
+test("disabled, explicity value", function() {
+	$("#radio01").button({ disabled: false });
+	same(false, $("#radio01").button("option", "disabled"),
+		"disabled option set to false");
+	same(false, $("#radio01").attr("disabled"), "element is disabled");
+	
+	$("#radio02").button({ disabled: true });
+	same(true, $("#radio02").button("option", "disabled"),
+		"disabled option set to true");
+	same(true, $("#radio02").attr("disabled"), "element is not disabled");
+});
+
+test("disabled, null", function() {
+	$("#radio01").button({ disabled: null });
+	same(false, $("#radio01").button("option", "disabled"),
+		"disabled option set to false");
+	same(false, $("#radio01").attr("disabled"), "element is disabled");
+	
+	$("#radio02").attr("disabled", "disabled").button({ disabled: null });
+	same(true, $("#radio02").button("option", "disabled"),
+		"disabled option set to true");
+	same(true, $("#radio02").attr("disabled"), "element is not disabled");
+});
+
 test("text false without icon", function() {
 	$("#button").button({
 		text: false
diff --git a/ui/jquery.ui.button.js b/ui/jquery.ui.button.js
index 7d21fa495..5e52fb4cb 100644
--- a/ui/jquery.ui.button.js
+++ b/ui/jquery.ui.button.js
@@ -44,6 +44,7 @@ var lastActive,
 
 $.widget( "ui.button", {
 	options: {
+		disabled: null,
 		text: true,
 		label: null,
 		icons: {
@@ -56,6 +57,10 @@ $.widget( "ui.button", {
 			.unbind( "reset.button" )
 			.bind( "reset.button", formResetHandler );
 
+		if ( typeof this.options.disabled !== "boolean" ) {
+			this.options.disabled = this.element.attr( "disabled" );
+		}
+
 		this._determineButtonType();
 		this.hasTitle = !!this.buttonElement.attr( "title" );