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) {
	var opt = options || {};
	opt.inputClass = opt.inputClass || "sBox";
	opt.containerClass = opt.containerClass || "sBox-wrapper";
	opt.hoverClass = opt.hoverClass || "current";
	opt.currentClass = opt.selectedClass || "selected"
	opt.debug = opt.debug || false;
	
	opt.allWrapClass = opt.allWrapClass || "sBox-outer";
	opt.valueBoxClass = opt.valueBoxClass || "sBox-value";
	
	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);
	// CIC ADDED: wrap and value displayer block element -GB
	var $wrapper = setupWrapper(opt);
	var $valueDisplay = setupValueDisplay(opt);
	
	// hide select and append newly created elements
	$select.hide().wrap($wrapper).before($valueDisplay).before($input).before($container);
	
	init();
	
	$valueDisplay.
	click(function(){
		$input.focus();
	});
	
	$input
	.focus(function() {
		if ($container.not(':visible')) {
			inFocus = true;
			showMe();
		}
	})
	.blur(function() {
		if ($container.is(':visible') && hasfocus > 0 ) {
			if(opt.debug) console.log('container visible and has focus')
		} else {
			// Workaround for ie scroll - thanks to Bernd Matzner
			if($.browser.msie/* || $browser.safari*/){ // check for safari too - workaround for webkit
				if(document.activeElement.getAttribute('id').indexOf('_container')==-1) {
					hideMe();
				} else {
					$input.focus();
				}
			} else {
				hideMe();
			}
		}
	})
	.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
				$('li.' + opt.hoverClass).trigger('click');
			break;
			case 13: // return
				event.preventDefault(); // seems not working in mac !
				$('li.' + opt.hoverClass).trigger('click');
			break;
			case 27: //escape
				hideMe();
			break;
		}
	});
	
	function showMe() {
		$container.show();
	}

	function hideMe() { 
		hasfocus = 0;
		$container.hide();
	}
	
	function init() {
		$container.append(getSelectOptions($input.attr('id'))).hide();
		$container.css('width',$input.css('width'));
    }
	
	function setupWrapper(options) {
		var wrapper = document.createElement('div');
		$wrapper = jQuery(wrapper);
		$wrapper.addClass(opt.allWrapClass);
		return $wrapper;
	}
	
	function setupValueDisplay(options) {
		var valueDisplay = document.createElement('div');
		$valueDisplay = jQuery(valueDisplay);
		$valueDisplay.addClass('valueDisplay');
		$valueDisplay.html(' ');
		return $valueDisplay;
	}
	
	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 || lis.length == 0) return false;
		active += step;
		//loop through list
		if (active < 0) {
			active = lis.size();
		} else if (active > lis.size()) {
			active = 0;
		}
	//	scroll(lis, active);
		lis.removeClass(opt.hoverClass);

		$(lis[active]).addClass(opt.hoverClass);
	}
	
	function scroll(list, active) {
		var el = $(list[active]).get(0);
		var list = $container.get(0);
		if (el.offsetTop + el.offsetHeight > list.scrollTop + list.clientHeight) {
			list.scrollTop = el.offsetTop + el.offsetHeight - list.clientHeight;
		} else if(el.offsetTop < list.scrollTop) {
			list.scrollTop = el.offsetTop;
		}
	}
	
	function setCurrent() {	
		var li = $("li."+opt.currentClass, $container).get(0);
		var ar = (''+li.id).split('_');
		var el = ar[ar.length-1];
		$select.val(el);
		$valueDisplay.html($(li).html());
		return true;
	}

	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 + '_' + $(this).val());
//			li.setAttribute('class',$(this).attr('class'));
			li.innerHTML = $(this).html();
			if ($(this).is(':selected')) {
				//$input.val($(this).html());
				$valueDisplay.html($(this).html());
				$(li).addClass(opt.currentClass);
			}
			ul.appendChild(li);
			$(li)
			.addClass($(this).attr('class'))
			.mouseover(function(event) {
				hasfocus = 1;
				jQuery(event.target, $container).addClass(opt.hoverClass);
			})
			.mouseout(function(event) {
				hasfocus = -1;
				jQuery(event.target, $container).removeClass(opt.hoverClass);
			})
			.click(function(event) {
				var fl = $('li.' + opt.hoverClass, $container).get(0);
				$('li.' + opt.currentClass).removeClass(opt.currentClass); 
				$(this).addClass(opt.currentClass);
				setCurrent();
				hideMe();
			});
		});
		return ul;
	}
};