/* jQuery Accessibility Plugin (ability) - A jQuery plugin to provide accessibility functions
 * Author: Tane Piper (digitalspaghetti@gmail.com)
 * Website: http://code.google.com/p/ability/
 * Licensed under the MIT License: http://www.opensource.org/licenses/mit-license.php
 *
 * === Changelog ===
 * Version 1.0 (20/07/2007)
 * Initial version.
 * Modifies text size to one of 4 CSS styles
 * Change page Style
 * Reset function
 */
(function($) {

	function switchStyleSheet(stylename, settings) {
		$('link[rel=stylesheet][media=screen][href~=/styleswitch/]').each(function(){
			this.disabled = true;
			if (jQuery(this).attr('href') == settings.styledir + stylename) {
            this.disabled = false;
         }

			if (settings.savecookie == true){
				jQuery.cookie('style', stylename, { expires: 365, path: '/' } );
			}
		});
	}

	function switchTextSize(size, settings) {
		jQuery('body').removeClass().addClass(size);
		if (settings.savecookie == true){
			jQuery.cookie('textsize', size, { expires: 365, path: '/' } );
		}
	}

	function reset(settings) {

		if (settings.textsizer == true) {
			jQuery('body').removeClass();
			//jQuery.cookie('textsize', null);
			jQuery.cookie('textsize', null, { path: '/' });
		}

		if (settings.switcher == true) {
			switchStyleSheet(settings.defaultcss, settings);
			jQuery.cookie('style', null);
		}
	}

	$.fn.extend({
	/* ability: function(settings)
	 * The constructor method
	 * Example: $().ability();
	 */
		ability: function(settings) {
			var version = "0.1";
			/* Default Settings*/
			settings = jQuery.extend({
				textsizer: true,
				textsizeclasses: ['m', 'l', 'xl', 'xxl'],
				switcher: true,
				switcherstyles: ['default.css', 'high-contrast.css'],
				styledir: "fileadmin/layouts/main/public/css/styleswitch/",
				savecookie: true,
				defaultcss: 'default.css'
			},settings);

			return this.each(function(){
				controlbox = this;

				var output = '<div class="csc-header"><h3>Anzeigeoptionen</h3></div>';

				var curstyle = jQuery.cookie('style');
				var curtextsize = jQuery.cookie('textsize');

				if (settings.textsizer == true) {
					if (curtextsize) { jQuery('body').removeClass().addClass(curtextsize); }
               var textsizer = '<h4 id="schriftgroesse">Schriftgröße:</h4>';
					textsizer += '<ul class="fontsize">';
					for (var i=0, len = settings.textsizeclasses.length; i < len; i++) {
						textsizer += '<li><a href="#" rel="' + settings.textsizeclasses[i] + '" class="textsizer-' + i +  '">' + 'A' + '</a></li>'
					}
					textsizer += '</ul>';
					output += textsizer;
				}

				if (settings.switcher == true) {
					if (curstyle) { switchStyleSheet(curstyle, settings); }
               var switcher = '<h4 id="kontrast">Kontrast:</h4>';
					switcher += '<ul class="switcher">';
					for (var i=0, len = settings.switcherstyles.length; i < len; i++) {
						var brokenstring=settings.switcherstyles[i].split(".");

                  if (brokenstring[0].toUpperCase() == 'DEFAULT') {
						   switcher += '<li><a href="#" rel="' + settings.switcherstyles[i] + '" class="kontrast-' + i  + '">' + 'normal' + '</a></li>'
                  }
                  if (brokenstring[0].toUpperCase() == 'HIGH-CONTRAST')  {
                     switcher += '<li><a href="#" rel="' + settings.switcherstyles[i] + '" class="kontrast-' + i + '">' + 'hoch' + '</a></li>'
                  }
					}
					switcher += '</ul>';
					output += switcher;
				}
				output += '<a href="#" class="reset">Zurücksetzen</a>';

				jQuery(controlbox).html(output);

				jQuery('ul.fontsize li a').bind('click', function(){
						switchTextSize(jQuery(this).attr('rel'), settings);
						return false;
				});
				jQuery('ul.switcher li a').bind('click', function(){
					switchStyleSheet(jQuery(this).attr('rel'), settings);
					return false;
				});
				jQuery('a.reset').bind('click', function(){
					reset(settings);
					return false;
				});

			});
		}
	});
})(jQuery);