/*
 * 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: jjIdjj
 * 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 firstFocusEvent =false;
	var elm_id = selectobj.id;
	var active = -1;
	var inFocus = false;
	var hasfocus = 0;
	//jquery object for select element
	var jjselect = jj(selectobj);
	// jquery container object
	var jjcontainer = setupContainer(opt);
	//jquery input object 
	var jjinput = setupInput(opt);
	// hide select and append newly created elements
	jjselect.hide().before(jjinput).before(jjcontainer);
	 
	
	init();
	
	jjinput
	.click(function(){
		
		
		if (!inFocus ){
			jjcontainer.toggle();
		}else if (firstFocusEvent){
			firstFocusEvent = false;
			jjcontainer.show();
		}else{
			hideMe();	
		}	
		
	})
	.focus(function(e){
	   if (!jjcontainer.is(':visible')) {	   
	       inFocus = true;
		   firstFocusEvent = true;
	       //jjcontainer.show();
	   }
	})
	.keydown(function(event) {	   
		switch(event.keyCode) {
			case 38: // up
				event.preventDefault();
				moveSelect(-1);
				if (!jjcontainer.is(':visible')){
					jj('li.'+opt.hoverClass).click();
				}
				break;
			case 40: // down
				event.preventDefault();
				moveSelect(1);
				if (!jjcontainer.is(':visible')){
					jj('li.'+opt.hoverClass).click();
				}
				break;
			//case 9:  // tab 
			case 13: // return
				event.preventDefault(); // seems not working in mac !
				jj('li.'+opt.hoverClass).trigger('click');
				break;
			case 27: //escape
			  hideMe();
			  break;
		}
	})
	.blur(function() {
		if (jjcontainer.is(':visible') && hasfocus > 0 ) {
			if(opt.debug) console.log('container visible and has focus')
		} else {
			hideMe();	
		}

	});


	function hideMe() { 
		hasfocus = 0;
		inFocus = false;
		firstFocusEvent = false;
		jjcontainer.hide(); 
	}
	
	function init() {
		jjcontainer.append(getSelectOptions(jjinput.attr('id'))).hide();
		var width = jjinput.css('width');
		jjcontainer.width(width);
		
    }
	
	function setupContainer(options) {
		var container = document.createElement("div");
		jjcontainer = jj(container);
		jjcontainer.attr('id', elm_id+'_container');
		jjcontainer.addClass(options.containerClass);
		
		return jjcontainer;
	}
	
	function setupInput(options) {
		var input = document.createElement("input");
		var jjinput = jj(input);
		jjinput.attr("id", elm_id+"_input");
		jjinput.attr("type", "text");
		jjinput.addClass(options.inputClass);
		jjinput.attr("autocomplete", "off");
		jjinput.attr("readonly", "readonly");
		jjinput.attr("tabIndex", jjselect.attr("tabindex")); // "I" capital is important for ie
		
		return jjinput;	
	}
	
	function moveSelect(step) {
		var lis = jj("li", jjcontainer);
		if (!lis) return;

		active += step;

		if (active < 0) {
			active = 0;
		} else if (active >= lis.size()) {
			active = lis.size() - 1;
		}

		lis.removeClass(opt.hoverClass);

		jj(lis[active]).addClass(opt.hoverClass);
	}
	
	function setCurrent() {	
		var li = jj("li."+opt.currentClass, jjcontainer).get(0);
		var ar = (''+li.id).split('_');
		var el = ar[ar.length-1];
		jjselect.val(el);
		jjinput.val(jj(li).html());
		return true;
	}
	
	// select value
	function getCurrentSelected() {
		return jjselect.val();
	}
	
	// input value
	function getCurrentValue() {
		return jjinput.val();
	}
	
	function getSelectOptions(parentid) {
		var select_options = new Array();
		var ul = document.createElement('ul');
		jjselect.children('option').each(function() {
			var li = document.createElement('li');
			li.setAttribute('id', parentid + '_' + jj(this).val());
			li.innerHTML = jj(this).html();
			if (jj(this).is(':selected')) {
				jjinput.val(jj(this).html());
				jj(li).addClass(opt.currentClass);
			}
			ul.appendChild(li);
			jj(li)
			.mouseover(function(event) {
				hasfocus = 1;
				if (opt.debug) console.log('over on : '+this.id);
				jQuery(event.target, jjcontainer).addClass(opt.hoverClass);
			})
			.mouseout(function(event) {
				hasfocus = -1;
				if (opt.debug) console.log('out on : '+this.id);
				jQuery(event.target, jjcontainer).removeClass(opt.hoverClass);
			})
			.click(function(event) {
			  var fl = jj('li.'+opt.hoverClass, jjcontainer).get(0);
				if (opt.debug) console.log('click on :'+this.id);
				jj('li.'+opt.currentClass).removeClass(opt.currentClass); 
				jj(this).addClass(opt.currentClass);
				setCurrent();
				hideMe();
				jjselect.change();
				var jjinputbox = jj(this).parents(".selectboxbg").next(".textareabg)").children(".answerText")
				jjinputbox.fadeOut("fast", function (){
					jj(this).attr("value","");
					jj(this).show();
				});
				
			
			});
		});
		return ul;
	}
	
};