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 || "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();
			}
		});

	function hideMe() {
		hasfocus = 0;
		$container.hide();
	}

	function init() {
		$container.append(getSelectOptions($input.attr('id'))).hide();
		var width = $input.css('width');
		$container.width(width);
	}

	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();
					$(this).closest("form").submit();
					hideMe();
				});
		});

		return ul;
	}
};