/*
* 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) {

	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());
		//if(elm_id == 'myselectbox') onChangeLocationS(getCurrentSelected());
		//if(elm_id == 'location') onChangeLocation(getCurrentSelected());
		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).attr('class') == 'main')
			{
				$(li).attr('style','background-color:#e3eef2;');
			}
			if ($(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) {
				if(elm_id == 'myselectbox' || elm_id == 'location')
				{
					var ar = (''+this.id).split('_');
					var el = ar[ar.length-1];
					if(elm_id == 'myselectbox')
					{
						if(el==0) onChangeLocationS(el);
						else
						{
							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();
						}
					}
					if(elm_id == 'location')
					{
						if(el==0) onChangeLocation(el);
						else
						{
							var el_arr = el.split('-');
							if(el_arr[1] == 0 || el_arr[2] == 0) onChangeLocation(el);
							else
							{
								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();
								if(parseInt(el_arr[3]) == 0) $('#metro_box').hide();
								else 
								{
									$('#metro_box').show();
									$('#metro_box').attr('onclick', 'onChangeDistrict("'+el+'")');
								}
							}
						}
					}
				}
				else
				{
					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;
	}

};