/*
	 * This file is no longer jquery.suggest.js 1:1 file
	 * We edit it for our purposes
	 * Antipodes WEB Team (PCF) :)
	 *
	 */ 
	
	
	/*
	 *	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 $input = $(input).attr("autocomplete", "off");
			var $results = $(document.createElement("ul"));

			var timeout = false;		// hold timeout ID for suggestion results to appear	
			var prevLength = -1;			// last recorded length of $input.val()
			//var cache = [];				// cache MRU list
			//var cacheSize = 0;			// size of cache in chars (bytes?)
			
			$results.addClass(options.resultsClass).appendTo('body');
				

			resetPosition();
			$(window)
				.load(resetPosition)		// just in case user is changing size of page while loading
				.resize(resetPosition);

			$input.blur(function() {
				setTimeout(function() { $results.hide() }, 200);
			});
			
			
			// help IE users if possible
			try {
				$results.bgiframe();
			} catch(e) { }


			// 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
			



			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) && $results.is(':visible')) ||
					(/^13$|^9$/.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 9:  // tab
						case 13: // return
							selectCurrentResult();
							break;
							
						case 27: //	escape
							$results.hide();
							break;
	
					}
				} else if ($input.val().length != prevLength) {
					if (timeout) 
						clearTimeout(timeout);
					timeout = setTimeout(suggest, options.delay);
					prevLength = $input.val().length;
					
				}
				
			}
			
			function suggest()
			{
				var q = $input.val();
				if (q.indexOf(' (') < 0 && q.indexOf(' ') >= 0 && $input.attr('id') != 'id_home_postcode_coverage_id' && $input.attr('id') != 'id_home_postcode_town_id')
				{
					$input.val($.trim(q).replace(/ /g, ''));
					$input.blur();
					alert("Please enter the first part of your postcode only\n\ne.g. SK8, M7, CW12\n\nThanks" );
				}
				else
				{
					q = $.trim(q);
					if (q.length >= options.minchars)
					{
						if (options.special)
						{
							var town = $('#id_home_postcode_town_id.autocomplete');
							if (town[0] && town.val())
							{
								options.source += '&search_town='+town.val();
							}
							else
							{
								options.source = options.source_original;
							}
						}
						
						$.get(options.source, {q: q}, function(txt)
						{
							$results.hide();
							
							var items = parseTxt(txt, q);
							
							displayItems(items);
							
							if (options.check_valid)
							{
								$.get(options.source + '&check_valid=' + options.check_valid, {q: q}, function(response)
								{
									if (response)
									{
										$input.attr('rev', '1');
										$input.removeClass('invalid');
										if (options.show_hide)
										{
											$(options.show_hide).show();
											$(options.show_hide).parents('div.input:eq(0)').show();
										}
									}
									else
									{
										$input.attr('rev', '');
										$input.addClass('invalid');
										if (options.show_hide)
										{
											$(options.show_hide).hide();
											$(options.show_hide).parents('div.input:eq(0)').hide();
										}
									}
								});
							}
						});
					}
					else{ $results.hide(); }
				}
			}
			
			function displayItems(items) {
				
				if (!items)
					return;
					
				if (!items.length) {
					$results.hide();
					return;
				}
				
				var html = '';
				for (var i = 0; i < items.length; i++)
					html += '<li>' + items[i] + '</li>';

				$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();
					});
			}
			
			function parseTxt(txt, q) {
				
				var items = [];
				var tokens = txt.split(options.delimiter);
				
				// parse returned data for non-empty items
				for (var i = 0; i < tokens.length; i++) {
					var token = $.trim(tokens[i]);
					if (token) {
						token = token.replace(
							new RegExp(q, 'ig'), 
							function(q) { return '<span class="' + options.matchClass + '">' + q + '</span>' }
							);
						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());
					if (options.special)
					{
						var town_value = $('#id_home_postcode_town_id.autocomplete').val()
						if (!town_value)
						{
							var parts = $currentResult.text().split(': ');
							if (parts[0])
							{
								$('#id_home_postcode_town_id.autocomplete').val(parts[0]);
								$('#id_select_all').show();
								$('#id_select_all').parents('div.input:eq(0)').show();
							}
						}
					}
					if (options.check_valid)
					{
						$input.attr('rev', '1');
						$input.removeClass('invalid');
						if (options.show_hide)
						{
							$(options.show_hide).show();
							$(options.show_hide).parents('div.input:eq(0)').show();
						}
					}
					$results.hide();
					
					if (options.onSelect)
						options.onSelect.apply($input[0]);
						
				}
			
			}
			
			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;
			
			options.source_original = options.source;

			this.each(function() {
				new $.suggest(this, options);
			});
	
			return this;
			
		};
		
	})(jQuery);