jquery-mobile/js/jquery.mobile.forms.button.js

/*
* jQuery Mobile Framework : "button" plugin - links that proxy to native input/buttons
* Copyright (c) jQuery Project
* Dual licensed under the MIT or GPL Version 2 licenses.
* http://jquery.org/license
*/ 
(function($, undefined ) {
$.widget( "mobile.button", $.mobile.widget, {
	options: {
		theme: null, 
		icon: null,
		iconpos: null,
		inline: null,
		corners: true,
		shadow: true,
		iconshadow: true
	},
	_create: function(){
		var $el = this.element,
			o = this.options;
		
		//add ARIA role
		this.button = $( "<div></div>" )
			.text( $el.text() || $el.val() )
			.buttonMarkup({
				theme: o.theme, 
				icon: o.icon,
				iconpos: o.iconpos,
				inline: o.inline,
				corners: o.corners,
				shadow: o.shadow,
				iconshadow: o.iconshadow
			})
			.insertBefore( $el )
			.append( $el.addClass('ui-btn-hidden') );
		
		//add hidden input during submit
		var type = $el.attr('type');
		if( type !== 'button' && type !== 'reset' ){
			$el.bind("vclick", function(){
				var $buttonPlaceholder = $("<input>", 
						{type: "hidden", name: $el.attr("name"), value: $el.attr("value")})
						.insertBefore($el);
						
				//bind to doc to remove after submit handling	
				$(document).submit(function(){
					 $buttonPlaceholder.remove();
				});
			});
		}
		this.refresh();
			
	},

	enable: function(){
		this.element.attr("disabled", false);
		this.button.removeClass("ui-disabled").attr("aria-disabled", false);
		return this._setOption("disabled", false);
	},

	disable: function(){
		this.element.attr("disabled", true);
		this.button.addClass("ui-disabled").attr("aria-disabled", true);
		return this._setOption("disabled", true);
	},

	refresh: function(){
		if( this.element.attr('disabled') ){
			this.disable();
		}
		else{
			this.enable();
		}
	}
});
})( jQuery );