/*

 * 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());

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();

hideMe();

});

});

return ul;

}



};