/*
	 *	jquery.suggest 1.1 - 2007-08-06
	 *	
	 *	Uses code and techniques from following libraries:
	 *	1. http://www.dyve.net/jquery/?autocomplete
	 *	2. http://dev.jquery.com/browser/trunk/plugins/interface/iautocompleter.js	
	 *
	 *	All the new stuff written by Peter Vulgaris (www.vulgarisoip.com)	
	 *	Feel free to do whatever you want with this file
	 *
	 */
	
	(function($) {

		$.suggest = function(input, options) {
	
	    var valori = [];	    
      var $resultscache = null;
      var $htmlcache = '';
      var $ultimovalore = '';

			var $input = $(input).attr("autocomplete", "off");
			var $results = $(document.createElement("ul"));

			var timeout = false;		// hold timeout ID for suggestion results to appear	
			var prevLength = 0;			// last recorded length of $input.val()
			var cache = [];				// cache MRU list
			var cacheSize = 0;			// size of cache in chars (bytes?)
			
			var resultsfocus = false;
			
			$results.addClass(options.resultsClass).appendTo('body');
				
			$results.mouseover( function() { resultsfocus=true; } );	
			$results.mouseout( function() { resultsfocus=false; } );	
			
			resetPosition();
			$(window)
				.load(resetPosition)		// just in case user is changing size of page while loading
				.resize(resetPosition);


			// I really hate browser detection, but I don't see any other way
			if ($.browser.mozilla)
				$input.keypress(processKey);	// onkeypress repeats arrow keys in Mozilla/Opera
			else
				$input.keydown(processKey);		// onkeydown repeats arrow keys in IE/Safari
			
      $input.click( function() { resetPosition(); suggest('all'); } );

			$input.blur(function() {			  
			  setTimeout(function() { assegnahidden();  }, 300);	
				if (!resultsfocus) setTimeout(function() { 
				    $results.hide(); 
		        if($.browser.msie && $.browser.version < 7) {
  				    $('#percorsoadd_orapartenza').show(); 
	  			    $('#percorsoadd_posti').show(); 
	  			  }  
				}, 200);				
			});
			
			
      function assegnahidden() {
         var trovato = null;          
         
         $currentResult = getCurrentResult();
         
         if ($currentResult) {
          $input.val($currentResult.text());
          $("#" + $input.attr("id").replace("_suggest","")).val($currentResult.text());  
         } 
         else {
         
           if ($input.val()!="") {

             var indiceluogo = LuogoEsistente(valori,$input.val());
             if ( indiceluogo !=-1 ) {
               $input.removeClass("suggested_rosso");		
               $("#" + $input.attr("id").replace("_suggest","")).val( valori[indiceluogo] );  
               $input.val(valori[indiceluogo]);
             } else {
               $input.addClass("suggested_rosso");				          					
    				   $("#" + $input.attr("id").replace("_suggest","")).val("null");				            
             } 
          }  
          
        }  
           
      }  
      

			function resetPosition() {
				// requires jquery.dimension plugin
				var offset = $input.offset();
				$results.css({
					top: (offset.top + input.offsetHeight) + 'px',
					left: offset.left + 'px'
				});
			}
			
			
			function processKey(e) {
				
				// handling up/down/escape requires results to be visible
				// handling enter/tab requires that AND a result to be selected
				if ((/27$|38$|40$/.test(e.keyCode) && $results.is(':visible')) ||
					(/^13$/.test(e.keyCode) && getCurrentResult())) {
		       
		      if (e.preventDefault)
		                e.preventDefault();
					if (e.stopPropagation)
		                e.stopPropagation();

					e.cancelBubble = true;
					e.returnValue = false;
				
					switch(e.keyCode) {
	
						case 38: // up
							prevResult();
							break;
				
						case 40: // down
							nextResult();							     
							break;
						
						case 13: // return
							selectCurrentResult();
							break;
							
						case 27: //	escape
							$results.hide();
							break;
	
					}
					
				} else if ($input.val().length != prevLength) {
          
          //svuoto il campo hidden 
	        $("#" + $input.attr("id").replace("_suggest","")).val('');
		      
					if (timeout) 
						clearTimeout(timeout);
					timeout = setTimeout(suggest, options.delay);
					prevLength = $input.val().length;
					
				}			
					
				
			}
			
			
			function suggest(x) {

        if (x!='all') {
				  var q = $.trim($input.val());
			  } else {
			    var q = '';
			  }

        //--riazzera i valori cache
        if (q.length==2) {
          valori = [];     
        }

        if (q.length<2) {
          valori = [];
          var q='';       
          $htmlcache = '';
        }
        //-----

        if (valori.length==0) {
          $.get(options.source, {q: q}, function(txt) {              
							valori = parseTxt(txt);												                  
      				$results.hide();			
      				displayItems(valori);				
						});						
        } 
        else {
          if (x=='all' || q=='') {            
    				$results.hide();	
  				  displayItems(valori);		 
          } 
          else {

    		  	var valoriproposti = [];    
            var trovato;	      

    				for (var i = 0; i < valori.length && !trovato; i++) {
    				      				  
    				  if ( q=='' || valori[i].substring(0,q.length).toLowerCase() == q.toLowerCase()) {
                var valoreproposto = valori[i];
    				    valoriproposti.push( valoreproposto );  				                      
    				  } else {
                if (valoriproposti.length>0)
                  trovato = true;
              }
    				}                          

    				$results.hide();			
    				displayItems(valoriproposti);			
          }

        }

			}
			
						
			function displayItems(items) {

				if (!items)
					return;
					
				if (!items.length) {
					$results.hide();
					$input.addClass("suggested_rosso");					
				  $("#" + $input.attr("id").replace("_suggest","")).val("null");
					return;
				} else {
				 $input.removeClass("suggested_rosso");	 
				}  

		    if($.browser.msie && $.browser.version < 7) {
          $('#percorsoadd_orapartenza').hide();
          $('#percorsoadd_posti').hide();
			  } 
			  
        if ($resultscache!=null && $ultimovalore == $input.val() ) {        
				  $resultscache.show();
					return;          
        } 


				var html = '';


        if ($input.val()=='' && $htmlcache!='')  {
           html = $htmlcache;
        } 
        else {
   				for (var i = 0; i < items.length; i++)
      			html += '<li>' + items[i] + '</li>';

          if ($htmlcache =='' && items.length == valori.length ) {
            $htmlcache = html;
          }

        }
       
				$results.html(html).show();
					
				$results
					.children('li')
					.mouseover(function() {
						$results.children('li').removeClass(options.selectClass);
						$(this).addClass(options.selectClass);
					})
					.click(function(e) {
						e.preventDefault(); 
						e.stopPropagation();
						selectCurrentResult();
					});

        //$results.bgiframe();

        if ($ultimovalore=='' || $ultimovalore != $input.val()) {

          $resultscache = $results;
          $ultimovalore = $input.val();
        }



			}
			
			function parseTxt(txt) {
				
				var items = [];
				var tokens = txt.split(options.delimiter);
				
				for (var i = 0; i < tokens.length; i++) {
					var token = $.trim(tokens[i]);
					if (token) {
						items[items.length] = token;
					}
				}
				
				return items;
			}
			
			function getCurrentResult() {
			
				if (!$results.is(':visible'))
					return false;
										
				var $currentResult = $results.children('li.' + options.selectClass);
				
				if (!$currentResult.length)
					$currentResult = false;
					
				return $currentResult;

			}
			
			function selectCurrentResult() {
			
				$currentResult = getCurrentResult();

				if ($currentResult) {
					$input.val($currentResult.text());
					$results.hide();
					
					if (options.onSelect)
						options.onSelect.apply($input[0]);
											
          $ultimovalore = $input.val();
	
				}
	
		    if($.browser.msie && $.browser.version < 7) {
			    $('#percorsoadd_orapartenza').show(); 
			    $('#percorsoadd_posti').show(); 
			  }  
			
			}
			
			function nextResult() {
			
				$currentResult = getCurrentResult();
			
				if ($currentResult)
					$currentResult
						.removeClass(options.selectClass)
						.next()
							.addClass(options.selectClass);
				else
					$results.children('li:first-child').addClass(options.selectClass);
			
			}
			
			function prevResult() {
			
				$currentResult = getCurrentResult();
			
				if ($currentResult)
					$currentResult
						.removeClass(options.selectClass)
						.prev()
							.addClass(options.selectClass);
				else
					$results.children('li:last-child').addClass(options.selectClass);
			
			}
	
		}
		
		$.fn.suggest = function(source, options) {
		
			if (!source)
				return;
		
			options = options || {};
			options.source = source;
			options.delay = options.delay || 100;
			options.resultsClass = options.resultsClass || 'ac_results';
			options.selectClass = options.selectClass || 'ac_over';
			options.matchClass = options.matchClass || 'ac_match';
			options.minchars = options.minchars || 1;
			options.delimiter = options.delimiter || '\n';
			options.onSelect = options.onSelect || false;
			options.maxCacheSize = options.maxCacheSize || 65536;
	
			this.each(function() {
				new $.suggest(this, options);
			});
	
			return this;
			
		};
		
	})(jQuery);