var QuickSearch = {

	minimum_length: 3,

	search_delay: 125,

	cache: new Object(),

	init: function()

	{

		$('#search_query').bind("keydown", QuickSearch.on_keydown);

		$('#search_query').bind("keyup", QuickSearch.on_keyup);

		$('#search_query').bind("change", QuickSearch.on_change);

		$('#search_query').blur(QuickSearch.on_blur);

		$('#search_query').attr('autocomplete', 'off');



		var scripts = document.getElementsByTagName('SCRIPT');

		for(var i = 0; i < scripts.length; i++)

		{

			s = scripts[i];

			if(s.src && s.src.indexOf('quicksearch.js') > -1)

			{

				QuickSearch.path = s.src.replace(/quicksearch\.js$/, '../');

				break;

			}

		}



	},



	on_blur: function(event)

	{

		if(!QuickSearch.item_selected && !QuickSearch.over_all)

		{

			QuickSearch.hide_popup();

		}

	},



	on_keydown: function(event)

	{

		if(event.keyCode == 13 && !event.altKey)

		{

			if(QuickSearch.selected)

			{

				try {

					event.preventDefault();

					event.stopPropagation();

				} catch(e) { }

				window.location = QuickSearch.selected.url;

				return false;

			}

			else

			{

				QuickSearch.hide_popup();

			}

		}

		else if(event.keyCode == 27)

		{

			if(document.getElementById('QuickSearch'))

			{

				try {

					event.preventDefault();

					event.stopPropagation();

				} catch(e) { }

			}

			QuickSearch.hide_popup();

		}

	},



	on_keyup: function(event)

	{

		if(QuickSearch.timeout)

		{

			clearTimeout(QuickSearch.timeout);

		}



		// Down key was pressed

		if(event.keyCode == 40 && QuickSearch.results)

		{

			if(QuickSearch.selected && QuickSearch.results.length >= QuickSearch.selected.index+1)

			{

				QuickSearch.highlight_item(QuickSearch.selected.index+1, true);

			}

			if(!QuickSearch.selected && QuickSearch.results.length > 0)

			{

				QuickSearch.highlight_item(0, true);

			}

			try {

				event.preventDefault();

				event.stopPropagation();

			} catch(e) { }

			return false;

		}

		else if(event.keyCode == 38 && QuickSearch.results)

		{

			if(QuickSearch.selected && QuickSearch.selected.index > 0)

			{

				QuickSearch.highlight_item(QuickSearch.selected.index-1, true);

			}

			try {

				event.preventDefault();

				event.stopPropagation();

			} catch(e) { }

		}

		else if(event.keyCode == 27)

		{

			QuickSearch.hide_popup();

		}

		else

		{

			if($('#search_query').val() == QuickSearch.last_query)

			{

				return false;

			}

			QuickSearch.selected = false;

			if($('#search_query').val().replace(/^\s+|\s+$/g, '').length >= QuickSearch.minimum_length)

			{

				QuickSearch.last_query = $('#search_query').val().replace(/^\s+|\s+$/g, '');

				if(QuickSearch.timeout)

				{

					window.clearTimeout(QuickSearch.timeout);

				}

				QuickSearch.timeout = window.setTimeout(QuickSearch.do_search, QuickSearch.search_delay);

			}

			else {

				if(document.getElementById('QuickSearch'))

				{

					$('#QuickSearch').remove();

				}

			}

		}

	},



	on_change: function(event)

	{

		return (QuickSearch.on_keydown(event) && QuickSearch.on_keyup(event));

	},



	do_search: function()

	{

		var cache_name = $('#search_query').val().length+$('#search_query').val();

		if(QuickSearch.cache[cache_name])

		{

			QuickSearch.search_done(QuickSearch.cache[cache_name]);

		}

		else

		{

			$.ajax({

				type: 'GET',

				url: QuickSearch.path+'search.php?action=AjaxSearch&search_query='+encodeURIComponent($('#search_query').val()),

				success: function(response) { QuickSearch.search_done(response); }

			});

		}

	},



	search_done: function(response)

	{

		// Cache results

		var cache_name = $('#search_query').val().length+$('#search_query').val();

		QuickSearch.cache[cache_name] = response;



		if(window.ActiveXObject)

		{

			var results_xml = new ActiveXObject("Microsoft.XMLDOM");

			results_xml.async = false;

			results_xml.loadXML(response);

		}

		else

		{

			var _parser = new DOMParser();

			var results_xml = _parser.parseFromString(response, "text/xml");

		}

		// Parse in results

		var results = results_xml.getElementsByTagName('result');

		if(results && results.length > 0)

		{

			QuickSearch.results = new Array();

			for(var i = 0; i < results.length; i++)

			{

				QuickSearch.results.push({

					title: results[i].getAttribute('title'),

					url: results[i].getAttribute('url'),

					price: results[i].getAttribute('price'),

					ratingimg: results[i].getAttribute('ratingimg'),

					image: results[i].getAttribute('image')

				});

			}





			// Results are now stored, build the menu



			if(document.getElementById('QuickSearch'))

			{

				$('#QuickSearch').remove();

			}



			var popup_container = document.createElement('TABLE');

			popup_container.className = 'QuickSearch';

			popup_container.id = 'QuickSearch';

			popup_container.cellPadding = "0";

			popup_container.cellSpacing = "0";

			popup_container.border = "0";



			var popup = document.createElement('TBODY');

			popup_container.appendChild(popup);



			// Initial node is our "Products" node

			var tr = document.createElement('TR');

			var td = document.createElement('TD');

			tr.className = "QuickSearchTitle";

			td.colSpan = "2";

			td.innerHTML = results_xml.getElementsByTagName('results')[0].getAttribute('type');

			tr.appendChild(td);

			popup.appendChild(tr);



			for(var i = 0; i < QuickSearch.results.length; i++)

			{

				var result = QuickSearch.results[i];

				var tr = document.createElement('TR');

				tr.id = "QuickSearchResult"+i;

				tr.className = "QuickSearchResult";



				var image_container = document.createElement('TD');

				image_container.className = 'QuickSearchResultImage';



				result.image = unescape(result.image);

				if(result.image.indexOf('http://') == 0 || result.image.indexOf('https://') == 0)

				{

					var image = document.createElement('IMG');

					image.src = result.image;

					image.alt = '';

					image.title = unescape(result.title);

					image_container.appendChild(image);

				}

				else

				{

					image_container.className += " QuickSearchResultNoImage";

					image_container.innerHTML = result.image.replace('+', ' ');

				}

				tr.appendChild(image_container);



				var meta = document.createElement('TD');

				meta.className = "QuickSearchResultMeta";



				var link = document.createElement('A');

				link.className = "QuickSearchResultName";

				link.title = unescape(result.title);

				link.href = result.url;

				link.innerHTML = unescape(result.title);

				meta.appendChild(link);



				var price = document.createElement('span');

				price.className = "Price";

				price.innerHTML = unescape(result.price);

				meta.appendChild(price);



				if(result.ratingimg)

				{

					var rating = document.createElement('IMG');

					rating.className = "RatingIMG";

					rating.src = unescape(result.ratingimg);

					meta.appendChild(rating);

				}



				tr.url = result.url;

				tr.index = i;

				tr.appendChild(meta);

				popup.appendChild(tr);



				tr.onmouseover = function() { QuickSearch.item_selected = true; QuickSearch.highlight_item(this.index, false); };

				tr.onmouseup = function() { window.location = this.url; };

				tr.onmouseout = function() { QuickSearch.item_selected = false; QuickSearch.unhighlight_item(this.index) };

			}



			// More results than we're showing?

			var all_results = results_xml.getElementsByTagName('results')[0].getAttribute('view_all');

			if(all_results)

			{

				var tr = document.createElement('TR');

				var td = document.createElement('TD');

				tr.className = "QuickSearchAllResults";

				tr.onmouseover = function() { QuickSearch.over_all = true; };

				tr.onmouseout = function() { QuickSearch.over_all = false; };

				td.colSpan = 2;

				td.innerHTML = all_results;

				tr.appendChild(td);

				popup.appendChild(tr);

			}



			var clone = popup.cloneNode(true);

			document.body.appendChild(clone);

			clone.style.top = "10px";

			clone.style.left = "10px";

			offset_height = clone.offsetHeight;

			offset_width = clone.offsetWidth;

			clone.parentNode.removeChild(clone);



			var offset_top = offset_left = 0;

			var element = document.getElementById('search_query');

			if(typeof(QuickSearchAlignment) != 'undefined' && QuickSearchAlignment == 'left') {

				offset_left = 0;

			}

			else {

				offset_left += element.offsetWidth - $('#SearchForm').width();

			}



			offset_top = -3;

			do

			{

				offset_top += element.offsetTop || 0;

				offset_left += element.offsetLeft || 0;

				element = element.offsetParent;

			} while(element);



			popup_container.style.position = "absolute";

			popup_container.style.left = offset_left + 1 + "px";

			popup_container.style.top = offset_top + document.getElementById('search_query').offsetHeight + "px";

			if(typeof(QuickSearchWidth) != 'undefined') {

				popup_container.style.width = QuickSearchWidth;

			}

			else {

				popup_container.style.width = document.getElementById('SearchForm').offsetWidth - 2 + "px";

			}

			if($('#QuickSearch'))

			{

				$('#QuickSearch').remove();

			}

			document.body.appendChild(popup_container);

			popup_container.style.display = '';

		}

		else

		{

			if(document.getElementById('QuickSearch'))

			{

				$('#QuickSearch').remove();

			}

		}

	},





	hide_popup: function()

	{

		$('#QuickSearch').remove();

		QuickSearch.selected = null;

	},



	highlight_item: function(index, keystroke)

	{

		element = $('#QuickSearchResult'+index);

		if(keystroke == true)

		{

			if(QuickSearch.selected) QuickSearch.selected.className = 'QuickSearchResult';

			QuickSearch.selected = document.getElementById('QuickSearchResult'+index);

		}

		element.addClass("QuickSearchHover");

	},



	unhighlight_item: function(index)

	{

		element = $('#QuickSearchResult'+index);

		element.removeClass('QuickSearchHover');

	}

};



$(document).ready(function()

{

	QuickSearch.init();

});