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

/*
* "button" plugin - links that proxy to native input/buttons
*/

(function( $, undefined ) {

$.widget( "mobile.button", $.mobile.widget, {
	options: {
		theme: null,
		icon: null,
		iconpos: null,
		inline: null,
		corners: true,
		shadow: true,
		iconshadow: true,
		initSelector: "button, [type='button'], [type='submit'], [type='reset'], [type='image']"
	},
	_create: function() {
		var $el = this.element,
			o = this.options,
			type,
			name,
			$buttonPlaceholder;

		// Add ARIA role
		this.button = $( "<div></div>" )
			.text( $el.text() || $el.val() )
			.insertBefore( $el )
			.buttonMarkup({
				theme: o.theme,
				icon: o.icon,
				iconpos: o.iconpos,
				inline: o.inline,
				corners: o.corners,
				shadow: o.shadow,
				iconshadow: o.iconshadow
			})
			.append( $el.addClass( "ui-btn-hidden" ) );

		type = $el.attr( "type" );
		name = $el.attr( "name" );

		// Add hidden input during submit if input type="submit" has a name.
		if ( type !== "button" && type !== "reset" && name ) {
				$el.bind( "vclick", function() {
					// Add hidden input if it doesn’t already exist.
					if( $buttonPlaceholder === undefined ) {
						$buttonPlaceholder = $( "<input>", {
							type: "hidden",
							name: $el.attr( "name" ),
							value: $el.attr( "value" )
						}).insertBefore( $el );

						// Bind to doc to remove after submit handling
						$( document ).one("submit", function(){
							$buttonPlaceholder.remove();

							// reset the local var so that the hidden input
							// will be re-added on subsequent clicks
							$buttonPlaceholder = undefined;
						});
					}
				});
		}

		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() {
		var $el = this.element;

		if ( $el.prop("disabled") ) {
			this.disable();
		} else {
			this.enable();
		}

		// the textWrapper is stored as a data element on the button object
		// to prevent referencing by it's implementation details (eg 'class')
		this.button.data( 'textWrapper' ).text( $el.text() || $el.val() );
	}
});

//auto self-init widgets
$( document ).bind( "pagecreate create", function( e ){
	$.mobile.button.prototype.enhanceWithin( e.target );
});

})( jQuery );