/*
 * 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.maxWidth = opt.maxWidth || 150
	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) {
				$container.toggle();
			}
		})
		.focus(function(event){
			if ($container.not(':visible')) {
				event.stopPropagation();
				inFocus = true;
				$('embed, object').css('visibility', 'hidden');
				$('div.flv-layer-simulate').removeClass('sweep');
		       $container.slideDown(250, function() {
			       $('embed, object').css('visibility', 'hidden');
			       $('div.flv-layer-simulate').removeClass('sweep');
		    	   $(document).bind('click', _documentClick);
		       });
		   }
		})
		.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;
			}
		});


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

		$('div.flv-layer-simulate').addClass('sweep');
		$('embed, object').css('visibility', 'visible');
		
		$(document).unbind('click', _documentClick);
	}

	function _documentClick(event) {
		if ($container.is(':visible') && hasfocus > 0 ) {
			if(opt.debug) console.log('container visible and has focus')
		} else {
			event.stopPropagation();
			hideMe();	
		}
	};

	function init() {
		$container.append(getSelectOptions($input.attr('id'))).hide();
        var minWidth = $select.width(),
            width    = $container.width();

        width = width < minWidth
              ? minWidth
              : (width > opt.maxWidth ? opt.maxWidth : width);

		var offset = GLOBALS.isIE7 ? 2 : 19;

		if (GLOBALS.isIE6)
		{
			minWidth -= 1;
		}
		
		$input.addClass($select.attr("class"));
        $container.width(((minWidth)/11)+'em');
        $input.width(((minWidth-offset)/11)+'em');

		var offsetLeft = $input.offset({scroll:false}).left
					   - $input.parent().offset({scroll:false}).left;

		if (GLOBALS.isIE7 && $select.css('marginLeft').match(/^([1-9][0-9]*)/))
		{
			offsetLeft++;
		}
		else if (GLOBALS.isIE6 && $select.find('option').size() > 10)
		{
			$container.css({'height':'18.182em'});
		}

		$container.css({'left':(offsetLeft/11)+'em'});
    }
	
	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 identifier = '' +li.id; 
		
		//if (!identifier.match(/^([a-z0-9_-]+)_selectbox-ndx([0-9])+/i))
		/**
                 * modified by kernpunkt 07.07.2009
                 * bug in regexp: must be ...ndx([0-9]+)/i an not ...ndx([0-9])+/i
                 */
                if (!identifier.match(/^([a-z0-9_-]+)_selectbox-ndx([0-9]+)/i))
		{
			return false;
		}

		$select.val(($select.get(0).options[RegExp.$2].value));
		$input.val($(li).html());

		$select.trigger('change');
		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');
		var index = 0;
		$select.children('option').each(function() {
			var li = document.createElement('li');
			li.setAttribute('id', parentid + '_selectbox-ndx' + (index++));
			li.innerHTML = $(this).html();
			if ($(this).is(':selected')) {
				$input.val($(this).html());
				$(li).addClass(opt.currentClass);
			}
			$(li).attr('title', $(this).html());
			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;
	}
	
};