/*
 * 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: 0.6
 */

jQuery.fn.extend({
	selectbox: function(options) {
		return this.each(function() {
			new jQuery.SelectBox(this, options);
		});
	}
});
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.currentClass || "selected"
	opt.debug = opt.debug || false;
	var elm_id = selectobj.id;
	var active = 0;
	var inFocus = false;
	var hasfocus = 0;
	var $select = $(selectobj);
	var $container = setupContainer(opt);
	var $input = setupInput(opt);
	$select.hide().before($input).before($container);
	init();
	
	$('body').click(function() {
		$('.selectbox-wrapper').hide();
		inFocus = false;
	});

	$input.click(function(event)
	{
		event.stopPropagation();
		if (inFocus) 
		{
			inFocus = false;
			$container.hide();
		}
		else 
		{
			$('.selectbox-wrapper').hide();
			inFocus = true;
			$container.show();
		}
	}).keydown(function(event) {
		switch (event.keyCode) {
		case 38:
			event.preventDefault();
			moveSelect( - 1);
			break;
		case 40:
			event.preventDefault();
			moveSelect(1);
			break;
		case 13:
			event.preventDefault();
			$('li.' + opt.hoverClass).trigger('click');
			break;
		case 27:
			hideMe();
			break;
		}
	}).blur(function() {
		if ($container.is(':visible') && hasfocus > 0) {
			if (opt.debug) console.log('container visible and has focus')
		} else {
			if($.browser.msie || $.browser.safari || $.browser.chrome)
			{
				if(document.activeElement.getAttribute('id').indexOf('_container')==-1)
				{
					hideMe();
				} 
				else 
				{
					$input.focus();
				}
			} 
			else
			{
			hideMe();
			}
		}
	});
	
	/*
	$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:
			event.preventDefault();
			moveSelect( - 1);
			break;
		case 40:
			event.preventDefault();
			moveSelect(1);
			break;
		case 13:
			event.preventDefault();
			$('li.' + opt.hoverClass).trigger('click');
			break;
		case 27:
			hideMe();
			break;
		}
	}).blur(function() {
		if ($container.is(':visible') && hasfocus > 0) {
			if (opt.debug) console.log('container visible and has focus')
		} else {
			if($.browser.msie)
			{
			if(document.activeElement.getAttribute('id').indexOf('_container')==-1)
			{
				hideMe();
			} 
			else 
			{
				$input.focus();
			}
			} 
			else
			{
			hideMe();
			}
		}
	});
	*/
	function hideMe() {
		hasfocus = 0;
		$container.hide();
	}
	function init() {
		$container.append(getSelectOptions($input.attr('id'))).hide();
		$container.width(parseInt($input.css('width')) + parseInt($input.css('padding-left')) + parseInt($input.css('padding-right')) + "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"));
		$input.width(parseInt($select.css('width')) + parseInt($select.css('padding-left')) + parseInt($select.css('padding-right')) + "px");
		return $input;
	}
	function moveSelect(step) {
		var lis = $("li", $container);
		if (!lis || lis.length == 0) return false;
		active += step;
		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);
		$input.val($(li).html());
		return true;
	}
	function getCurrentSelected() {
		return $select.val();
	}
	function getCurrentValue() {
		return $input.val();
	}
	function getSelectOptions(parentid) {
		var select_options = new Array();
		var ul = document.createElement('ul');
		$select.children('option').each(function() {
			var li = document.createElement('li');
			if ($(this).val() != "") li.setAttribute('rel', "#stationIdDetails" + $(this).val());
			li.setAttribute('id', parentid + '_' + $(this).val());
			li.innerHTML = $(this).html();
			if ($(this).is(':selected')) {
				$input.val($(this).text());
				$(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);
				$(this).parent().find('li.' + opt.currentClass).removeClass(opt.currentClass);
				$(this).addClass(opt.currentClass);
				setCurrent();
				$select.get(0).blur();
				$select.change();
				hideMe();
			});
		});
		return ul;
	}
};