/*
 * 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 */
/*
 * PS: po ch** tu debuger?
 * 
if (!window.console) {
	var console = {
		log: function(msg) {
	 }
	}
}
*/
/* */

jQuery.SelectBox = function(selectobj, callback, 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 show = 0;
	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);

	var s_ = $select.find('option:selected').val();
	var inp_ = $('<input>')
			.attr('type', 'hidden')
			.attr('name', selectobj.name)
			.val(s_);
	// hide select and append newly created elements
	$select.hide().before($input).before($container).before(inp_);

	$select.remove();
	
	inp_.attr('id', elm_id);

	init();
	$input
	.click(function(){
		if (!inFocus)
			$container.toggle();
            if($container.width() < 7) {
			     		var width = parseInt($input.css('width')) + 6;
		                $container.width(width);
			}
		setTimeout(function(){ show = 1; }, 20);
		// IE FIX
		if($.browser.msie && $.browser.version == '7.0'){
			var height = $container.parent().height();
			var width = $container.parent().width();
			if($container.attr('id') == 'contactUs_subject_container' || $container.attr('id') == 'kind_container'){ width -= 10; }
			
			$container.css({ 'margin-top' : height + 'px', 'margin-left' : - width -3 + 'px'});
		}
	})
	.focus(function(){
	   if ($container.not(':visible')) {
	       inFocus = true;
	       $container.show();

		   $('.selectbox-wrapper').not($container).hide();
			// IE FIX
			if($.browser.msie && $.browser.version == '7.0'){
				var height = $container.parent().height();
				var width = $container.parent().width();
				if($container.attr('id') == 'contactUs_subject_container' || $container.attr('id') == 'kind_container'){ width -= 10; }
				$container.css({ 'margin-top' : height + 'px', 'margin-left' : - width -3 + 'px'});
			}
	   }
	})
	.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;
		}
	});
	
	$('body').click( function(){
		show = 0;

		setTimeout(function(){
			if(show == 0)
				hideMe();
		}, 50);
	});


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

	function init() {
		$container.append(getSelectOptions($input.attr('id'))).hide();
		var width = parseInt($input.css('width')) + 6;
		$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);

		var offset = $(lis[active]).offset();
		var height = $(lis[active]).height();
		var parent = $container.offset();
		var pHeight = $container.height();

		var scr = pHeight - offset.top + parent.top;
		var top = 0;

		if(step > 0 && scr <= 5){
			top = $container.scrollTop();
			$container.scrollTop( top + 25);
		}
		else if(step < 0 && scr >= pHeight){
			top = $container.scrollTop();
			$container.scrollTop( top - 25);
		}
	}

	function setCurrent() {
		var li = $("li."+opt.currentClass, $container).get(0);

		if(li.id.match(/_input_-1$/)){
			return false;
		}
		var ar = (''+li.id).split('_');
		var el = ar[ar.length-1];
		$select.val(el);
		$input.val($(li).html());
		inp_.val( $(li).attr('id').replace( $input.attr('id') + '_', '') );
		return true;
	}

	// select value
	function getCurrentSelected() {
		return $select.val();
	}

	// input value
	function getCurrentValue() {
		return $input.val();
	}

	function getSelectOptions(parentid) {
		var ul = document.createElement('ul');
		$select.children('option').each(function() {
			var oncl = $(this).attr('onclick');
			var li = document.createElement('li');
			li.setAttribute('id', parentid + '_' + $(this).val());
			li.innerHTML = $(this).html();

			if(oncl != undefined)
				li.onclick = function(){ setTimeout(oncl, 100) };

			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);
				$('li.'+opt.currentClass).removeClass(opt.currentClass);
				$(this).addClass(opt.currentClass);
				if(setCurrent()){
					hideMe();
				}
			});
		});
		return ul;
	}

};