/*
 * 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: 0.4
 * 
 * Changelog :
 *  - 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);
		});
	}
});





var jQuerySelectboxIndexArray = new Array();
jQuery.SelectBox = function(selectobj, options) {
         
   var selectedID = selectobj.id;
   for(var m =0 ; m< jQuerySelectboxIndexArray.length; m++){            
        if(jQuerySelectboxIndexArray[m] == selectedID){               
         var xx= document.getElementById(selectedID + '_input')
           if(xx != null)
                return;
        }        
   }
   
    jQuerySelectboxIndexArray.push(selectedID);
   
	var opt = options || {};
	opt.inputClass = opt.inputClass || "selectbox";
	opt.containerClass = opt.containerClass || "selectbox-wrapper";
	opt.hoverClass = opt.hoverClass || "selected";
	opt.debug = opt.debug || false;
	
	var elm_id = selectobj.id;
	
	
	var close = false;
	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
		    var over = false;
	$select.hide().before($input).before($container);
	if(selectobj.disabled == true){
        $input.attr('disabled',true)
        $input.css('color','gray')
	}
	
	
	if(selectobj.onchange != null){
	
	    var tx_change = selectobj.onchange.toString();
    	
	    if(tx_change.indexOf('__doPostBack') != -1 )
	    {
	 
	        
	          $input.attr('doPostback',true)
	          $input.attr('cid',selectobj.id)
	          
	          $(selectobj).attr('onchange','');
	    }
    	
	
	}
	else
	{	
	          // alert('no postback');
	}
	
	
	
	
	
	
	init();
	
	  
	$input
	.click(function(){
	
	$container.hover(
             function()
             {
                // document.getElementById($container[0].id).style.background = 'red';
                 over = true;
                
                 return;
             },
             function()
             {
                //$container.focus();
              // document.getElementById($container[0].id).style.background = 'blue';
                 over = false
             });
	
	
	
            if (!inFocus) {
            if(selectobj.disabled != true)
		      $container.toggle(); 		                    
		    }
		  
	})
	.focus(function(){
	   if(selectobj.disabled != true){
	       if ($container.not(':visible')) {
	           inFocus = true;
	           $container.show();
	       }
	   }
	})
	.keydown(function(event) {	   
		switch(event.keyCode) {
			case 38: // up
				event.preventDefault();
				moveSelect(-1);
				break;
			case 40: // down
				event.preventDefault();
				moveSelect(1);
				break;
			//case 9:  // tab 
			case 13: // return
				event.preventDefault(); // seems not working in mac !\						
				setCurrent($container.find('.selected').attr('id'));
				hideMe();
				break;
		}
	})
	.blur(function() {	  	 	   	   
        var isOn = over;
		if ($container.is(':visible') && hasfocus > 0 ) {
			if(opt.debug) console.log('container visible and has focus')
		} else {
	    	
            if(isOn == false){                         
                setTimeout(hideMe,1000)                 
			}
		}
	}); 
	function hideMe() { 
	    
	    var x = $container;
	    //document.getElementById($container[0].id).style.display = 'none';
		$container.hide(); 
	}
	
	function init() {
		$container.append(getSelectOptions($input.attr('id'))).hide();
		var width = $input.css('width');
		
		var item = $container.find('.selected').attr('id');
		
		var atr = $container.find('li');

		var i;
		for(var i=0; i< atr.length; i++){
		    if(atr[i].className.indexOf('selected') != -1)
		    break
		}

		active = i;
  
		
		//$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.hoverClass, $container).get(0);
		var ar = (''+li.id).split('_');
		var el = ar[ar.length-1];
		$select.val(el);
        var html =$(li).html();
        html = html.replace('amp;', ''); 
		$input.val(html);
		$select.change();   
		return true;
	}
	
	var close = false;
	function setCurrent(id) {	
        
		var x = document.getElementById(id);
		var li = x;
		var ar = (''+li.id).split('_');
		var el = ar[ar.length-1];
		$select.val(el);
		var html = $(li).html();//replace('&amp', '')
		html = html.replace('amp;', ''); 
		$input.val(html);
		close = true;
	    $container.toggle();
		try
        {
         $select.change();
        }
        catch(err)
        {

        }        
          if($input.attr('dopostback') != null)
	    {
	           
	    if($input.attr('dopostback') == 'true'){
	        var cid = $input.attr('cid');
	        
	        cid = cid.replace('_','$');
	        cid = cid.replace('_','$');
//	        alert(cid)
	        __doPostBack(cid, '')
	    }
	    }
        
		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')) {
			    var html = $(this).html()
				$input.val(html.replace('amp;', ''));
				$(li).addClass(opt.hoverClass);
			}
			ul.appendChild(li);
			$(li)
			.mouseover(function(event) {
				hasfocus = 1;
				if (opt.debug) console.log('out 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) {
				if (opt.debug) console.log('click on :'+this.id);
				
			    
				setCurrent(this.id);
			
				hideMe();
			});
		});
		return ul;
	}
	
};