/*
 * jQuery selectbox plugin
 *
 * Copyright (c) 2007 Sadri Sahraoui (brainfault.com)
 * Licensed under the GPL license and MIT:
 *   http://www.opensource.org/licenses/GPL-license.php
 *   http://www.opensource.org/licenses/mit-license.php
 *
 * The code is inspired from Autocomplete plugin (http://www.dyve.net/jquery/?autocomplete)
 *
 * Revision: $Id$
 * Version: 0.5
 * 
 * Changelog :
 *  Version 0.5 
 *  - separate css style for current selected element and hover element which solve the highlight issue 
 *  Version 0.4
 *  - Fix width when the select is in a hidden div   @Pawel Maziarz
 *  - Add a unique id for generated li to avoid conflict with other selects and empty values @Pawel Maziarz
 */
jQuery.fn.extend({
	selectbox: function(options) {
		return this.each(function() {
			new jQuery.SelectBox(this, options);
		});
	}
});


/* pawel maziarz: work around for ie logging */
if (!window.console) {
	var console = {
		log: function(msg) { 
	 }
	}
}
/* */

jQuery.SelectBox = function(selectobj, options) {
	function hideMe() {
		hasfocus = 0;
		$container.hide(); 
	}
	
	function init() {
		$container.append(getSelectOptions($input.attr('id'))).hide();
		var width = $input.outerWidth();
		width = width - 2;
		$container.width(width+"px");
	}
	
	function setupContainer(options) {
		var container = document.createElement("div");
		$container = $(container);
		$container.attr('id', elm_id+'_container');
		$container.addClass(options.containerClass);
		
		return $container;
	}
	
	function setupInput(options) {
		var input = document.createElement("input");
		var $input = $(input);
		$input.attr("id", elm_id+"_input");
		$input.attr("type", "text");
		$input.addClass(options.inputClass);
		$input.attr("autocomplete", "off");
		$input.attr("readonly", "readonly");
		$input.attr("tabIndex", $select.attr("tabindex")); // "I" capital is important for ie
		
		return $input;	
	}
	
	function moveSelect(step) {
		var lis = $("li", $container);
		if (!lis) return;

		active += step;

		if (active < 0) {
			active = 0;
		} else if (active >= lis.size()) {
			active = lis.size() - 1;
		}

		lis.removeClass(opt.hoverClass);

		$(lis[active]).addClass(opt.hoverClass);
	}
	
	function setCurrent() {	
		var li = $("li."+opt.currentClass, $container).get(0);
		var ar = (''+li.id).split('_');
		var el = ar[ar.length-1];
		$select.val(el);
		$input.val($(li).html());
		return true;
	}
	
	// select value
	function getCurrentSelected() {
		return $select.val();
	}
	
	// input value
	function getCurrentValue() {
		return $input.val();
	}
	
	function getSelectOptions(parentid) {
		var select_options = new Array();
		var ul = document.createElement('ul');
		$select.children('option').each(function() {
			var li = document.createElement('li');
			li.setAttribute('id', parentid + '_' + $(this).val());
			li.innerHTML = $(this).html();
			if ($(this).is(':selected')) {
				$input.val($(this).html());
				$(li).addClass(opt.currentClass);
			}
			ul.appendChild(li);
			$(li)
			.mouseover(function(event) {
				hasfocus = 1;
				if (opt.debug) console.log('over on : '+this.id);
				jQuery(event.target, $container).addClass(opt.hoverClass);
			})
			.mouseout(function(event) {
				hasfocus = -1;
				if (opt.debug) console.log('out on : '+this.id);
				jQuery(event.target, $container).removeClass(opt.hoverClass);
			})
			.click(function(event) {
			  var fl = $('li.'+opt.hoverClass, $container).get(0);
				if (opt.debug) console.log('click on :'+this.id);
				$('li.'+opt.currentClass).removeClass(opt.currentClass); 
				$(this).addClass(opt.currentClass);
				setCurrent();
				hideMe();
			});
		});
		return ul;
	}
	
	if(!$.browser.msie){
		var opt = options || {};
		opt.inputClass = opt.inputClass || "selectbox";
		opt.containerClass = opt.containerClass || "selectbox-wrapper";
		opt.hoverClass = opt.hoverClass || "current";
		opt.currentClass = opt.selectedClass || "selected"
		opt.debug = opt.debug || false;
		
		var elm_id = selectobj.id;
		var active = -1;
		var inFocus = false;
		var hasfocus = 0;
		//jquery object for select element
		var $select = $(selectobj);
		// jquery container object
		var $container = setupContainer(opt);
		//jquery input object 
		var $input = setupInput(opt);
		// hide select and append newly created elements
		$select.hide().before($input).before($container);
		
		
		init();
		
		$input
		.click(function(){
		if (!inFocus) {
			  $container.toggle();
			}
		})
		.focus(function(){
		   if ($container.not(':visible')) {
			   inFocus = true;
			   $container.show();
		   }
		})
		.keydown(function(event) {	   
			switch(event.keyCode) {
				case 38: // up
					event.preventDefault();
					moveSelect(-1);
					break;
				case 40: // down
					event.preventDefault();
					moveSelect(1);
					break;
				//case 9:  // tab 
				case 13: // return
					event.preventDefault(); // seems not working in mac !
					$('li.'+opt.hoverClass).trigger('click');
					break;
				case 27: //escape
				  hideMe();
				  break;
			}
		})
		.blur(function() {
			if ($container.is(':visible') && hasfocus > 0 ) {
				if(opt.debug) console.log('container visible and has focus')
			} else {
				hideMe();	
			}
		});
	}
	else {
		$('#product').width('220');
	};
};