/*

 * 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

 */

// funcia na update selectu, ktora pomeni korektne vsetko
function update_selectbox(id, val) {
	$('#' + id).val(val);
	$('#' + id).change();
	
	$('#' + id + '_container ul li').removeClass('selected');
	$('#' + id + '_container ul li:nth-child(' + (document.getElementById(id).selectedIndex + 1) + ')').addClass('selected');
	$('#' + id + '_input').val(stripHTML($('#' + id + '_container ul li.selected').html()));
}

function refresh_selectbox(id) {
	$('#' + id + '_container').remove();
	$('#' + id + '_input').remove();
	//$('#' + id + '_sipka').remove();
	$('#' + id).selectbox();
}

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);

	// sipka

	//var $sipka = setupSipka(opt);

	// hide select and append newly created elements

	$select.hide().before($input)/*.before($sipka)*/.before($container);

	init();
	
	// nadstavba inputu
	$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();

		}

	});
	
	//$sipka.click(function() {$('#' + this.id.replace('_sipka', '_input')).click();});
	
	
	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);
		
		$container.mouseover(function(event) {
			hasfocus = 1;
		}).mouseout(function(event) {
			hasfocus = -1;
		});

		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 setupSipka(options) {

		var sipka = document.createElement('div');

		var $sipka = $(sipka);
		
		$sipka.attr("id", elm_id + "_sipka");

		$sipka.attr("class", "sipka");

		return $sipka;
	}

	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);

		$select.change();

		$input.val(stripHTML($(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().replace(/\[\[\[/g, '<').replace(/]]]/g, '>');
			//alert($(this).html().replace('[[[', '<'));
			if($(this).is(':selected')) {

				$input.val(stripHTML(li.innerHTML));

				$(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();

				hideMe();

			});
		});
		return ul;

	}

};

function stripHTML(oldString) {

	var newString = "";
	var inTag = false;
	var vnutorne = false;
	
	for(var i = 0; i < oldString.length; i++) {

		if(oldString.charAt(i) == '<') {
			inTag = true;
			vnutorne = !vnutorne;
		}
			
		if(oldString.charAt(i) == '>') {
			if(oldString.charAt(i + 1) == "<") {
				//dont do anything
			} else {
				inTag = false;
				i++;
			}
		}

		if(!inTag && !vnutorne)
			newString += oldString.charAt(i);

	}

	return newString;
}