;
(function ($) {
    $.fn.extend({
        autocomplete: function (urlOrData, options) {
            var isUrl = typeof urlOrData == "string";
            options = $.extend({}, $.Autocompleter.defaults, {
                url: isUrl ? urlOrData : null,
                data: isUrl ? null : urlOrData,
                delay: isUrl ? $.Autocompleter.defaults.delay : 10,
                max: options && !options.scroll ? 10 : 150
            }, options);
            options.highlight = options.highlight ||
            function (value) {
                return value
            };
            options.formatMatch = options.formatMatch || options.formatItem;
            return this.each(function () {
                new $.Autocompleter(this, options)
            })
        },
        result: function (handler) {
            return this.bind("result", handler)
        },
        search: function (handler) {
            return this.trigger("search", [handler])
        },
        flushCache: function () {
            return this.trigger("flushCache")
        },
        setOptions: function (options) {
            return this.trigger("setOptions", [options])
        },
        unautocomplete: function () {
            return this.trigger("unautocomplete")
        }
    });
    $.Autocompleter = function (input, options) {
        var KEY = {
            UP: 38,
            DOWN: 40,
            DEL: 46,
            TAB: 9,
            RETURN: 13,
            ESC: 27,
            COMMA: 188,
            PAGEUP: 33,
            PAGEDOWN: 34,
            BACKSPACE: 8
        };
        var $input = $(input).attr("autocomplete", "off").addClass(options.inputClass);
        var timeout;
        var previousValue = "";
        var cache = $.Autocompleter.Cache(options);
        var hasFocus = 0;
        var lastKeyPressCode;
        var config = {
            mouseDownOnSelect: false
        };
        var select = $.Autocompleter.Select(options, input, selectCurrent, config);
        var blockSubmit;
        $.browser.opera && $(input.form).bind("submit.autocomplete", function () {
            if (blockSubmit) {
                blockSubmit = false;
                return false
            }
        });
        $input.bind(($.browser.opera ? "keypress" : "keydown") + ".autocomplete", function (event) {
            lastKeyPressCode = event.keyCode;
            switch (event.keyCode) {
            case KEY.UP:
                event.preventDefault();
                if (select.visible()) {
                    select.prev()
                } else {
                    onChange(0, true)
                }
                break;
            case KEY.DOWN:
                event.preventDefault();
                if (select.visible()) {
                    select.next()
                } else {
                    onChange(0, true)
                }
                break;
            case KEY.PAGEUP:
                event.preventDefault();
                if (select.visible()) {
                    select.pageUp()
                } else {
                    onChange(0, true)
                }
                break;
            case KEY.PAGEDOWN:
                event.preventDefault();
                if (select.visible()) {
                    select.pageDown()
                } else {
                    onChange(0, true)
                }
                break;
            case options.multiple && $.trim(options.multipleSeparator) == "," && KEY.COMMA:
            case KEY.TAB:
            case KEY.RETURN:
                if (selectCurrent()) {
                    event.preventDefault();
                    blockSubmit = true;
                    return false
                }
                break;
            case KEY.ESC:
                select.hide();
                break;
            default:
                clearTimeout(timeout);
                timeout = setTimeout(onChange, options.delay);
                break
            }
        }).focus(function () {
            hasFocus++
        }).blur(function () {
            hasFocus = 0;
            if (!config.mouseDownOnSelect) {
                hideResults()
            }
        }).click(function () {
            if (hasFocus++ > 1 && !select.visible()) {
                onChange(0, true)
            }
        }).bind("search", function () {
            var fn = (arguments.length > 1) ? arguments[1] : null;

            function findValueCallback(q, data) {
		var result;
                if (data && data.length) {
                    for (var i = 0; i < data.length; i++) {
                        if (data[i].result.toLowerCase() == q.toLowerCase()) {
                            result = data[i];
                            break
                        }
                    }
                }
                if (typeof fn == "function") fn(result);
                else $input.trigger("result", result && [result.data, result.value])
            }
            $.each(trimWords($input.val()), function (i, value) {
                request(value, findValueCallback, findValueCallback)
            })
        }).bind("flushCache", function () {
            cache.flush()
        }).bind("setOptions", function () {
            $.extend(options, arguments[1]);
            if ("data" in arguments[1]) cache.populate()
        }).bind("unautocomplete", function () {
            select.unbind();
            $input.unbind();
            $(input.form).unbind(".autocomplete")
        });

        function selectCurrent() {
            var selected = select.selected();
            if (!selected) return false;
            var v = selected.result;
            previousValue = v;
            if (options.multiple) {
                var words = trimWords($input.val());
                if (words.length > 1) {
                    v = words.slice(0, words.length - 1).join(options.multipleSeparator) + options.multipleSeparator + v
                }
                v += options.multipleSeparator
            }
            $input.val(v);
            hideResultsNow();
            $input.trigger("result", [selected.data, selected.value]);
            return true
        }
        function onChange(crap, skipPrevCheck) {
            if (lastKeyPressCode == KEY.DEL) {
                select.hide();
                return
            }
            var currentValue = $input.val();
            if (!skipPrevCheck && currentValue == previousValue) return;
            previousValue = currentValue;
            currentValue = lastWord(currentValue);
            if (currentValue.length >= options.minChars) {
                $input.addClass(options.loadingClass);
                if (!options.matchCase) currentValue = currentValue.toLowerCase();
                request(currentValue, receiveData, hideResultsNow)
            } else {
                stopLoading();
                select.hide()
            }
        };

        function trimWords(value) {
            if (!value) {
                return [""]
            }
            var words = value.split(options.multipleSeparator);
            var result = [];
            $.each(words, function (i, value) {
                if ($.trim(value)) result[i] = $.trim(value)
            });
            return result
        }
        function lastWord(value) {
            if (!options.multiple) return value;
            var words = trimWords(value);
            return words[words.length - 1]
        }
        function autoFill(q, sValue) {
            if (options.autoFill && (lastWord($input.val()).toLowerCase() == q.toLowerCase()) && lastKeyPressCode != KEY.BACKSPACE) {
                $input.val($input.val() + sValue.substring(lastWord(previousValue).length));
                $.Autocompleter.Selection(input, previousValue.length, previousValue.length + sValue.length)
            }
        };

        function hideResults() {
            clearTimeout(timeout);
            timeout = setTimeout(hideResultsNow, 200)
        };

        function hideResultsNow() {
            var wasVisible = select.visible();
            select.hide();
            clearTimeout(timeout);
            stopLoading();
            if (options.mustMatch) {
                $input.search(function (result) {
                    if (!result) {
                        if (options.multiple) {
                            var words = trimWords($input.val()).slice(0, -1);
                            $input.val(words.join(options.multipleSeparator) + (words.length ? options.multipleSeparator : ""))
                        } else $input.val("")
                    }
                })
            }
            if (wasVisible) $.Autocompleter.Selection(input, input.value.length, input.value.length)
        };

        function receiveData(q, data) {
            if (data && data.length && hasFocus) {
                stopLoading();
                select.display(data, q);
                autoFill(q, data[0].value);
                select.show()
            } else {
                hideResultsNow()
            }
        };

        function request(term, success, failure) {
            
	    if (!options.matchCase) term = term.toLowerCase();
            var data = cache.load(term);
            if (data && data.length) {
                success(term, data)
            } else if ((typeof options.url == "string") && (options.url.length > 0)) {
                var extraParams = {
                    timestamp: +new Date()
                };
                $.each(options.extraParams, function (key, param) {
                    extraParams[key] = typeof param == "function" ? param() : param
                });
                $.ajax({
                    mode: "abort",
                    port: "autocomplete" + input.name,
                    dataType: options.dataType,
                    url: options.url,
                    data: $.extend({
                        q: lastWord(term),
                        limit: options.max
                    }, extraParams),
                    success: function (data) {
                        var parsed = options.parse && options.parse(data) || parse(data);
                        cache.add(term, parsed);
                        success(term, parsed)
                    }
                })
            } else {
                select.emptyList();
                failure(term)
            }
        };

        function parse(data) {
            var parsed = [];
            var rows = data.split("\n");
	    for (var i = 0; i < rows.length; i++) {
                var row = $.trim(rows[i]);
                if (row) {
                    row = row.split("|");
                    parsed[parsed.length] = {
                        data: row,
                        value: row[0],
                        result: options.formatResult && options.formatResult(row, row[0]) || row[0]
                    }
                }
            }
            return parsed
        };

        function stopLoading() {
            $input.removeClass(options.loadingClass)
        }
    };
    $.Autocompleter.defaults = {
        inputClass: "ac_input",
        resultsClass: "ac_results",
        loadingClass: "ac_loading",
        minChars: 1,
        delay: 400,
        matchCase: false,
        matchSubset: true,
        matchContains: false,
        cacheLength: 10,
        max: 100,
        mustMatch: false,
        extraParams: {},
        selectFirst: true,
        formatItem: function (row) {
            return row[0]
        },
        formatMatch: null,
        autoFill: false,
        width: 0,
        multiple: false,
        multipleSeparator: ", ",
        highlight: function (value, term) {
            return value.replace(new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + term.replace(/([\^\$\(\)\[\]\{\}\*\.\+\?\|\\])/gi, "\\$1") + ")(?![^<>]*>)(?![^&;]+;)", "gi"), "<strong>$1</strong>")
        },
        scroll: true,
        scrollHeight: 180
    };
    $.Autocompleter.Cache = function (options) {
        var data = {};
        var length = 0;

        function matchSubset(s, sub) {
            if (!options.matchCase) s = s.toLowerCase();
            var i = s.indexOf(sub);
            if (options.matchContains == "word") {
                i = s.toLowerCase().search("\\b" + sub.toLowerCase())
            }
            if (i == -1) return false;
            return i == 0 || options.matchContains
        };

        function add(q, value) {
            if (length > options.cacheLength) {
                flush()
            }
            if (!data[q]) {
                length++
            }
            data[q] = value
        }
        function populate() {
            if (!options.data) return false;
            var stMatchSets = {},
                nullData = 0;
            if (!options.url) options.cacheLength = 1;
            stMatchSets[""] = [];
            for (var i = 0, ol = options.data.length; i < ol; i++) {
                var rawValue = options.data[i];
                rawValue = (typeof rawValue == "string") ? [rawValue] : rawValue;
                var value = options.formatMatch(rawValue, i + 1, options.data.length);
                if (value === false) continue;
                var firstChar = value.charAt(0).toLowerCase();
                if (!stMatchSets[firstChar]) stMatchSets[firstChar] = [];
                var row = {
                    value: value,
                    data: rawValue,
                    result: options.formatResult && options.formatResult(rawValue) || value
                };
                stMatchSets[firstChar].push(row);
                if (nullData++ < options.max) {
                    stMatchSets[""].push(row)
                }
            };
            $.each(stMatchSets, function (i, value) {
                options.cacheLength++;
                add(i, value)
            })
        }
        setTimeout(populate, 25);

        function flush() {
            data = {};
            length = 0
        }
        return {
            flush: flush,
            add: add,
            populate: populate,
            load: function (q) {
                if (!options.cacheLength || !length) return null;
                if (!options.url && options.matchContains) {
                    var csub = [];
                    for (var k in data) {
                        if (k.length > 0) {
                            var c = data[k];
                            $.each(c, function (i, x) {
                                if (matchSubset(x.value, q)) {
                                    csub.push(x)
                                }
                            })
                        }
                    }
                    return csub
                } else if (data[q]) {
                    return data[q]
                } else if (options.matchSubset) {
                    for (var i = q.length - 1; i >= options.minChars; i--) {
                        var c = data[q.substr(0, i)];
                        if (c) {
                            var csub = [];
                            $.each(c, function (i, x) {
                                if (matchSubset(x.value, q)) {
                                    csub[csub.length] = x
                                }
                            });
                            return csub
                        }
                    }
                }
                return null
            }
        }
    };
    $.Autocompleter.Select = function (options, input, select, config) {
        var CLASSES = {
            ACTIVE: "ac_over"
        };
        var listItems, active = -1,
            data, term = "",
            needsInit = true,
            element, list;

        function init() {
            if (!needsInit) return;
            element = $("<div/>").hide().addClass(options.resultsClass).css("position", "absolute").appendTo(document.body);
            list = $("<ul/>").appendTo(element).mouseover(function (event) {
                if (target(event).nodeName && target(event).nodeName.toUpperCase() == 'LI') {
                    active = $("li", list).removeClass(CLASSES.ACTIVE).index(target(event));
                    $(target(event)).addClass(CLASSES.ACTIVE)
                }
            }).click(function (event) {
                $(target(event)).addClass(CLASSES.ACTIVE);
                select();
                input.focus();
                return false
            }).mousedown(function () {
                config.mouseDownOnSelect = true
            }).mouseup(function () {
                config.mouseDownOnSelect = false
            });
            if (options.width > 0) element.css("width", options.width);
            needsInit = false
        }
        function target(event) {
            var element = event.target;
            while (element && element.tagName != "LI") element = element.parentNode;
            if (!element) return [];
            return element
        }
        function moveSelect(step) {
            listItems.slice(active, active + 1).removeClass(CLASSES.ACTIVE);
            movePosition(step);
            var activeItem = listItems.slice(active, active + 1).addClass(CLASSES.ACTIVE);
            if (options.scroll) {
                var offset = 0;
                listItems.slice(0, active).each(function () {
                    offset += this.offsetHeight
                });
                if ((offset + activeItem[0].offsetHeight - list.scrollTop()) > list[0].clientHeight) {
                    list.scrollTop(offset + activeItem[0].offsetHeight - list.innerHeight())
                } else if (offset < list.scrollTop()) {
                    list.scrollTop(offset)
                }
            }
        };

        function movePosition(step) {
            active += step;
            if (active < 0) {
                active = listItems.size() - 1
            } else if (active >= listItems.size()) {
                active = 0
            }
        }
        function limitNumberOfItems(available) {
            return options.max && options.max < available ? options.max : available
        }
        function fillList() {
            list.empty();
            var max = limitNumberOfItems(data.length);
            for (var i = 0; i < max; i++) {
                if (!data[i]) continue;
                var formatted = options.formatItem(data[i].data, i + 1, max, data[i].value, term);
                if (formatted === false) continue;
                var li = $("<li/>").html(options.highlight(formatted, term)).addClass(i % 2 == 0 ? "ac_even" : "ac_odd").appendTo(list)[0];
                $.data(li, "ac_data", data[i])
            }
            listItems = list.find("li");
            if (options.selectFirst) {
                listItems.slice(0, 1).addClass(CLASSES.ACTIVE);
                active = 0
            }
            if ($.fn.bgiframe) list.bgiframe()
        }
        return {
            display: function (d, q) {
                init();
                data = d;
                term = q;
                fillList()
            },
            next: function () {
                moveSelect(1)
            },
            prev: function () {
                moveSelect(-1)
            },
            pageUp: function () {
                if (active != 0 && active - 8 < 0) {
                    moveSelect(-active)
                } else {
                    moveSelect(-8)
                }
            },
            pageDown: function () {
                if (active != listItems.size() - 1 && active + 8 > listItems.size()) {
                    moveSelect(listItems.size() - 1 - active)
                } else {
                    moveSelect(8)
                }
            },
            hide: function () {
                element && element.hide();
                listItems && listItems.removeClass(CLASSES.ACTIVE);
                active = -1
            },
            visible: function () {
                return element && element.is(":visible")
            },
            current: function () {
                return this.visible() && (listItems.filter("." + CLASSES.ACTIVE)[0] || options.selectFirst && listItems[0])
            },
            show: function () {
                var offset = $(input).offset();
                element.css({
                    width: typeof options.width == "string" || options.width > 0 ? options.width : $(input).width(),
                    top: offset.top + input.offsetHeight,
                    left: offset.left
                }).show();
                if (options.scroll) {
                    list.scrollTop(0);
                    list.css({
                        maxHeight: options.scrollHeight,
                        overflow: 'auto'
                    });
                    if ($.browser.msie && typeof document.body.style.maxHeight === "undefined") {
                        var listHeight = 0;
                        listItems.each(function () {
                            listHeight += this.offsetHeight
                        });
                        var scrollbarsVisible = listHeight > options.scrollHeight;
                        list.css('height', scrollbarsVisible ? options.scrollHeight : listHeight);
                        if (!scrollbarsVisible) {
                            listItems.width(list.width() - parseInt(listItems.css("padding-left")) - parseInt(listItems.css("padding-right")))
                        }
                    }
                }
            },
            selected: function () {
                var selected = listItems && listItems.filter("." + CLASSES.ACTIVE).removeClass(CLASSES.ACTIVE);
                return selected && selected.length && $.data(selected[0], "ac_data")
            },
            emptyList: function () {
                list && list.empty()
            },
            unbind: function () {
                element && element.remove()
            }
        }
    };
    $.Autocompleter.Selection = function (field, start, end) {
        if (field.createTextRange) {
            var selRange = field.createTextRange();
            selRange.collapse(true);
            selRange.moveStart("character", start);
            selRange.moveEnd("character", end);
            selRange.select()
        } else if (field.setSelectionRange) {
            field.setSelectionRange(start, end)
        } else {
            if (field.selectionStart) {
                field.selectionStart = start;
                field.selectionEnd = end
            }
        }
        field.focus()
    }
})(jQuery);