/*
 * jQuery UI Combobox 1.8
 *
 * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI/Combobox
 *
 * Depends:
 *	jquery.ui.core.js
 *	jquery.ui.widget.js
 *	jquery.ui.position.js
 */
(function($) {
	$.widget("ui.combobox", {
		_create: function() {
			var self = this;
			var select = this.element.hide();
			var input = $("<input>")
				.insertAfter(select)
				.autocomplete({
					source: function(request, response) {
						var matcher = new RegExp(request.term, "i");
						response(select.children("option").map(function() {
							var text = $(this).text();
							if (!request.term || matcher.test(text))
								return {
									id: $(this).val(),
									label: text.replace(new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + request.term.replace(/([\^\$\(\)\[\]\{\}\*\.\+\?\|\\])/gi, "\\$1") + ")(?![^<>]*>)(?![^&;]+;)", "gi"), "<strong>$1</strong>"),
									value: text
								};
						}));
					},
					delay: 0,
					select: function(e, ui) {
						if (!ui.item) {
							// remove invalid value, as it didn't match anything
							$(this).val("");
							return false;
						}
						$(this).focus();
						select.val(ui.item.id);
						self._trigger("selected", null, {
							item: select.find("[value='" + ui.item.id + "']")
						});
						
					},
					minLength: 0
				})
				.addClass("ui-widget ui-widget-content ui-corner-left");
			$("<button>&nbsp;</button>")
			.insertAfter(input)
			.button({
				icons: {
					primary: "ui-icon-triangle-1-s"
				},
				text: false
			}).removeClass("ui-corner-all")
			.addClass("ui-corner-right ui-button-icon")
			.position({
				my: "left center",
				at: "right center",
				of: input,
				offset: "-1 0"
			}).css("top", "")
			.click(function() {
				// close if already visible
				if (input.autocomplete("widget").is(":visible")) {
					input.autocomplete("close");
					return;
				}
				// pass empty string as value to search for, displaying all results
				input.autocomplete("search", "");
				input.focus();
			});
		}
	});

})(jQuery);