// @PLUGIN Table sorter by Christian Bach - http://std.li/gD
(function ($) {
    $.extend({
        table: new

        function () {
            var parsers = [],
                widgets = [];
            this.defaults = {
                cssHeader: "",
                cssAsc: "asc",
                cssDesc: "desc",
                cssChildRow: "expand-child",
                sortInitialOrder: "asc",
                sortMultiSortKey: "shiftKey",
                sortForce: null,
                sortAppend: null,
                sortLocaleCompare: true,
                textExtraction: "simple",
                parsers: {},
                widgets: [],
                widgetZebra: {
                    css: ["even", "odd"]
                },
                headers: {},
                widthFixed: false,
                cancelSelection: true,
                sortList: [],
                headerList: [],
                dateFormat: "us",
                decimal: '/\.|\,/g',
                onRenderHeader: null,
                selectorHeaders: 'thead th',
                debug: false
            };

            function benchmark(s, d) {
                log(s + "," + (new Date().getTime() - d.getTime()) + "ms");
            }
            this.benchmark = benchmark;

            function log(s) {
                if (typeof console != "undefined" && typeof console.debug != "undefined") {
                    console.log(s);
                } else {
                    alert(s);
                }
            }
            function buildParserCache(table, $headers) {
                if (table.config.debug) {
                    var parsersDebug = "";
                }
                if (table.tBodies.length == 0) return;
                var rows = table.tBodies[0].rows;
                if (rows[0]) {
                    var list = [],
                        cells = rows[0].cells,
                        l = cells.length;
                    for (var i = 0; i < l; i++) {
                        var p = false;
                        if ($.metadata && ($($headers[i]).metadata() && $($headers[i]).metadata().sorter)) {
                            p = getParserById($($headers[i]).metadata().sorter);
                        } else if ((table.config.headers[i] && table.config.headers[i].sorter)) {
                            p = getParserById(table.config.headers[i].sorter);
                        }
                        if (!p) {
                            p = detectParserForColumn(table, rows, -1, i);
                        }
                        if (table.config.debug) {
                            parsersDebug += "column:" + i + " parser:" + p.id + "\n";
                        }
                        list.push(p);
                    }
                }
                if (table.config.debug) {
                    log(parsersDebug);
                }
                return list;
            };

            function detectParserForColumn(table, rows, rowIndex, cellIndex) {
                var l = parsers.length,
                    node = false,
                    nodeValue = false,
                    keepLooking = true;
                while (nodeValue == '' && keepLooking) {
                    rowIndex++;
                    if (rows[rowIndex]) {
                        node = getNodeFromRowAndCellIndex(rows, rowIndex, cellIndex);
                        nodeValue = trimAndGetNodeText(table.config, node);
                        if (table.config.debug) {
                            log('Checking if value was empty on row:' + rowIndex);
                        }
                    } else {
                        keepLooking = false;
                    }
                }
                for (var i = 1; i < l; i++) {
                    if (parsers[i].is(nodeValue, table, node)) {
                        return parsers[i];
                    }
                }
                return parsers[0];
            }
            function getNodeFromRowAndCellIndex(rows, rowIndex, cellIndex) {
                return rows[rowIndex].cells[cellIndex];
            }
            function trimAndGetNodeText(config, node) {
                return $.trim(getElementText(config, node));
            }
            function getParserById(name) {
                var l = parsers.length;
                for (var i = 0; i < l; i++) {
                    if (parsers[i].id.toLowerCase() == name.toLowerCase()) {
                        return parsers[i];
                    }
                }
                return false;
            }
            function buildCache(table) {
                if (table.config.debug) {
                    var cacheTime = new Date();
                }
                var totalRows = (table.tBodies[0] && table.tBodies[0].rows.length) || 0,
                    totalCells = (table.tBodies[0].rows[0] && table.tBodies[0].rows[0].cells.length) || 0,
                    parsers = table.config.parsers,
                    cache = {
                        row: [],
                        normalized: []
                    };
                for (var i = 0; i < totalRows; ++i) {
                    var c = $(table.tBodies[0].rows[i]),
                        cols = [];
                    if (c.hasClass(table.config.cssChildRow)) {
                        cache.row[cache.row.length - 1] = cache.row[cache.row.length - 1].add(c);
                        continue;
                    }
                    cache.row.push(c);
                    for (var j = 0; j < totalCells; ++j) {
                        cols.push(parsers[j].format(getElementText(table.config, c[0].cells[j]), table, c[0].cells[j]));
                    }
                    cols.push(cache.normalized.length);
                    cache.normalized.push(cols);
                    cols = null;
                };
                if (table.config.debug) {
                    benchmark("Building cache for " + totalRows + " rows:", cacheTime);
                }
                return cache;
            };

            function getElementText(config, node) {
                var text = "";
                if (!node) return "";
                if (!config.supportsTextContent) config.supportsTextContent = node.textContent || false;
                if (config.textExtraction == "simple") {
                    if (config.supportsTextContent) {
                        text = node.textContent;
                    } else {
                        if (node.childNodes[0] && node.childNodes[0].hasChildNodes()) {
                            text = node.childNodes[0].innerHTML;
                        } else {
                            text = node.innerHTML;
                        }
                    }
                } else {
                    if (typeof (config.textExtraction) == "function") {
                        text = config.textExtraction(node);
                    } else {
                        text = $(node).text();
                    }
                }
                return text;
            }
            function appendToTable(table, cache) {
                if (table.config.debug) {
                    var appendTime = new Date()
                }
                var c = cache,
                    r = c.row,
                    n = c.normalized,
                    totalRows = n.length,
                    checkCell = (n[0].length - 1),
                    tableBody = $(table.tBodies[0]),
                    rows = [];
                for (var i = 0; i < totalRows; i++) {
                    var pos = n[i][checkCell];
                    rows.push(r[pos]);
                    if (!table.config.appender) {
                        var l = r[pos].length;
                        for (var j = 0; j < l; j++) {
                            tableBody[0].appendChild(r[pos][j]);
                        }
                    }
                }
                if (table.config.appender) {
                    table.config.appender(table, rows);
                }
                rows = null;
                if (table.config.debug) {
                    benchmark("Rebuilt table:", appendTime);
                }
                applyWidget(table);
                setTimeout(function () {
                    $(table).trigger("sortEnd");
                }, 0);
            };

            function buildHeaders(table) {
                if (table.config.debug) {
                    var time = new Date();
                }
                var meta = ($.metadata) ? true : false;
                var header_index = computeTableHeaderCellIndexes(table);
                $tableHeaders = $(table.config.selectorHeaders, table).each(function (index) {
                    this.column = header_index[this.parentNode.rowIndex + "-" + this.cellIndex];
                    this.order = formatSortingOrder(table.config.sortInitialOrder);
                    this.count = this.order;
                    if (checkHeaderMetadata(this) || checkHeaderOptions(table, index)) this.sortDisabled = true;
                    if (checkHeaderOptionsSortingLocked(table, index)) this.order = this.lockedOrder = checkHeaderOptionsSortingLocked(table, index);
                    if (!this.sortDisabled) {
                        var $th = $(this).addClass(table.config.cssHeader);
                        if (table.config.onRenderHeader) table.config.onRenderHeader.apply($th);
                    }
                    table.config.headerList[index] = this;
                });
                if (table.config.debug) {
                    benchmark("Built headers:", time);
                    log($tableHeaders);
                }
                return $tableHeaders;
            };

            function computeTableHeaderCellIndexes(t) {
                var matrix = [];
                var lookup = {};
                var thead = t.getElementsByTagName('THEAD')[0];
                var trs = thead.getElementsByTagName('TR');
                for (var i = 0; i < trs.length; i++) {
                    var cells = trs[i].cells;
                    for (var j = 0; j < cells.length; j++) {
                        var c = cells[j];
                        var rowIndex = c.parentNode.rowIndex;
                        var cellId = rowIndex + "-" + c.cellIndex;
                        var rowSpan = c.rowSpan || 1;
                        var colSpan = c.colSpan || 1
                        var firstAvailCol;
                        if (typeof (matrix[rowIndex]) == "undefined") {
                            matrix[rowIndex] = [];
                        }
                        for (var k = 0; k < matrix[rowIndex].length + 1; k++) {
                            if (typeof (matrix[rowIndex][k]) == "undefined") {
                                firstAvailCol = k;
                                break;
                            }
                        }
                        lookup[cellId] = firstAvailCol;
                        for (var k = rowIndex; k < rowIndex + rowSpan; k++) {
                            if (typeof (matrix[k]) == "undefined") {
                                matrix[k] = [];
                            }
                            var matrixrow = matrix[k];
                            for (var l = firstAvailCol; l < firstAvailCol + colSpan; l++) {
                                matrixrow[l] = "x";
                            }
                        }
                    }
                }
                return lookup;
            }
            function checkCellColSpan(table, rows, row) {
                var arr = [],
                    r = table.tHead.rows,
                    c = r[row].cells;
                for (var i = 0; i < c.length; i++) {
                    var cell = c[i];
                    if (cell.colSpan > 1) {
                        arr = arr.concat(checkCellColSpan(table, headerArr, row++));
                    } else {
                        if (table.tHead.length == 1 || (cell.rowSpan > 1 || !r[row + 1])) {
                            arr.push(cell);
                        }
                    }
                }
                return arr;
            };

            function checkHeaderMetadata(cell) {
                if (($.metadata) && ($(cell).metadata().sorter === false)) {
                    return true;
                };
                return false;
            }
            function checkHeaderOptions(table, i) {
                if ((table.config.headers[i]) && (table.config.headers[i].sorter === false)) {
                    return true;
                };
                return false;
            }
            function checkHeaderOptionsSortingLocked(table, i) {
                if ((table.config.headers[i]) && (table.config.headers[i].lockedOrder)) return table.config.headers[i].lockedOrder;
                return false;
            }
            function applyWidget(table) {
                var c = table.config.widgets;
                var l = c.length;
                for (var i = 0; i < l; i++) {
                    getWidgetById(c[i]).format(table);
                }
            }
            function getWidgetById(name) {
                var l = widgets.length;
                for (var i = 0; i < l; i++) {
                    if (widgets[i].id.toLowerCase() == name.toLowerCase()) {
                        return widgets[i];
                    }
                }
            };

            function formatSortingOrder(v) {
                if (typeof (v) != "Number") {
                    return (v.toLowerCase() == "desc") ? 1 : 0;
                } else {
                    return (v == 1) ? 1 : 0;
                }
            }
            function isValueInArray(v, a) {
                var l = a.length;
                for (var i = 0; i < l; i++) {
                    if (a[i][0] == v) {
                        return true;
                    }
                }
                return false;
            }
            function setHeadersCss(table, $headers, list, css) {
                $headers.removeClass(css[0]).removeClass(css[1]);
                var h = [];
                $headers.each(function (offset) {
                    if (!this.sortDisabled) {
                        h[this.column] = $(this);
                    }
                });
                var l = list.length;
                for (var i = 0; i < l; i++) {
                    h[list[i][0]].addClass(css[list[i][1]]);
                }
            }
            function fixColumnWidth(table, $headers) {
                var c = table.config;
                if (c.widthFixed) {
                    var colgroup = $('<colgroup>');
                    $("tr:first td", table.tBodies[0]).each(function () {
                        colgroup.append($('<col>').css('width', $(this).width()));
                    });
                    $(table).prepend(colgroup);
                };
            }
            function updateHeaderSortCount(table, sortList) {
                var c = table.config,
                    l = sortList.length;
                for (var i = 0; i < l; i++) {
                    var s = sortList[i],
                        o = c.headerList[s[0]];
                    o.count = s[1];
                    o.count++;
                }
            }
            function multisort(table, sortList, cache) {
                if (table.config.debug) {
                    var sortTime = new Date();
                }
                var dynamicExp = "var sortWrapper = function(a,b) {",
                    l = sortList.length;
                for (var i = 0; i < l; i++) {
                    var c = sortList[i][0];
                    var order = sortList[i][1];
                    var s = (table.config.parsers[c].type == "text") ? ((order == 0) ? makeSortFunction("text", "asc", c) : makeSortFunction("text", "desc", c)) : ((order == 0) ? makeSortFunction("numeric", "asc", c) : makeSortFunction("numeric", "desc", c));
                    var e = "e" + i;
                    dynamicExp += "var " + e + " = " + s;
                    dynamicExp += "if(" + e + ") { return " + e + "; } ";
                    dynamicExp += "else { ";
                }
                var orgOrderCol = cache.normalized[0].length - 1;
                dynamicExp += "return a[" + orgOrderCol + "]-b[" + orgOrderCol + "];";
                for (var i = 0; i < l; i++) {
                    dynamicExp += "}; ";
                }
                dynamicExp += "return 0; ";
                dynamicExp += "}; ";
                if (table.config.debug) {
                    benchmark("Evaling expression:" + dynamicExp, new Date());
                }
                eval(dynamicExp);
                cache.normalized.sort(sortWrapper);
                if (table.config.debug) {
                    benchmark("Sorting on " + sortList.toString() + " and dir " + order + " time:", sortTime);
                }
                return cache;
            };

            function makeSortFunction(type, direction, index) {
                var a = "a[" + index + "]",
                    b = "b[" + index + "]";
                if (type == 'text' && direction == 'asc') {
                    return "(" + a + " == " + b + " ? 0 : (" + a + " === null ? Number.POSITIVE_INFINITY : (" + b + " === null ? Number.NEGATIVE_INFINITY : (" + a + " < " + b + ") ? -1 : 1 )));";
                } else if (type == 'text' && direction == 'desc') {
                    return "(" + a + " == " + b + " ? 0 : (" + a + " === null ? Number.POSITIVE_INFINITY : (" + b + " === null ? Number.NEGATIVE_INFINITY : (" + b + " < " + a + ") ? -1 : 1 )));";
                } else if (type == 'numeric' && direction == 'asc') {
                    return "(" + a + " === null && " + b + " === null) ? 0 :(" + a + " === null ? Number.POSITIVE_INFINITY : (" + b + " === null ? Number.NEGATIVE_INFINITY : " + a + " - " + b + "));";
                } else if (type == 'numeric' && direction == 'desc') {
                    return "(" + a + " === null && " + b + " === null) ? 0 :(" + a + " === null ? Number.POSITIVE_INFINITY : (" + b + " === null ? Number.NEGATIVE_INFINITY : " + b + " - " + a + "));";
                }
            };

            function makeSortText(i) {
                return "((a[" + i + "] < b[" + i + "]) ? -1 : ((a[" + i + "] > b[" + i + "]) ? 1 : 0));";
            };

            function makeSortTextDesc(i) {
                return "((b[" + i + "] < a[" + i + "]) ? -1 : ((b[" + i + "] > a[" + i + "]) ? 1 : 0));";
            };

            function makeSortNumeric(i) {
                return "a[" + i + "]-b[" + i + "];";
            };

            function makeSortNumericDesc(i) {
                return "b[" + i + "]-a[" + i + "];";
            };

            function sortText(a, b) {
                if (table.config.sortLocaleCompare) return a.localeCompare(b);
                return ((a < b) ? -1 : ((a > b) ? 1 : 0));
            };

            function sortTextDesc(a, b) {
                if (table.config.sortLocaleCompare) return b.localeCompare(a);
                return ((b < a) ? -1 : ((b > a) ? 1 : 0));
            };

            function sortNumeric(a, b) {
                return a - b;
            };

            function sortNumericDesc(a, b) {
                return b - a;
            };

            function getCachedSortType(parsers, i) {
                return parsers[i].type;
            };
            this.construct = function (settings) {
                return this.each(function () {
                    if (!this.tHead || !this.tBodies) return;
                    var $this, $document, $headers, cache, config, shiftDown = 0,
                        sortOrder;
                    this.config = {};
                    config = $.extend(this.config, $.table.defaults, settings);
                    $this = $(this);
                    $.data(this, "table", config);
                    $headers = buildHeaders(this);
                    this.config.parsers = buildParserCache(this, $headers);
                    cache = buildCache(this);
                    var sortCSS = [config.cssDesc, config.cssAsc];
                    fixColumnWidth(this);
                    $headers.click(function (e) {
                        var totalRows = ($this[0].tBodies[0] && $this[0].tBodies[0].rows.length) || 0;
                        if (!this.sortDisabled && totalRows > 0) {
                            $this.trigger("sortStart");
                            var $cell = $(this);
                            var i = this.column;
                            this.order = this.count++ % 2;
                            if (this.lockedOrder) this.order = this.lockedOrder;
                            if (!e[config.sortMultiSortKey]) {
                                config.sortList = [];
                                if (config.sortForce != null) {
                                    var a = config.sortForce;
                                    for (var j = 0; j < a.length; j++) {
                                        if (a[j][0] != i) {
                                            config.sortList.push(a[j]);
                                        }
                                    }
                                }
                                config.sortList.push([i, this.order]);
                            } else {
                                if (isValueInArray(i, config.sortList)) {
                                    for (var j = 0; j < config.sortList.length; j++) {
                                        var s = config.sortList[j],
                                            o = config.headerList[s[0]];
                                        if (s[0] == i) {
                                            o.count = s[1];
                                            o.count++;
                                            s[1] = o.count % 2;
                                        }
                                    }
                                } else {
                                    config.sortList.push([i, this.order]);
                                }
                            };
                            setTimeout(function () {
                                setHeadersCss($this[0], $headers, config.sortList, sortCSS);
                                appendToTable($this[0], multisort($this[0], config.sortList, cache));
                            }, 1);
                            return false;
                        }
                    }).mousedown(function () {
                        if (config.cancelSelection) {
                            this.onselectstart = function () {
                                return false
                            };
                            return false;
                        }
                    });
                    $this.bind("update", function () {
                        var me = this;
                        setTimeout(function () {
                            me.config.parsers = buildParserCache(me, $headers);
                            cache = buildCache(me);
                        }, 1);
                    }).bind("updateCell", function (e, cell) {
                        var config = this.config;
                        var pos = [(cell.parentNode.rowIndex - 1), cell.cellIndex];
                        cache.normalized[pos[0]][pos[1]] = config.parsers[pos[1]].format(getElementText(config, cell), cell);
                    }).bind("sorton", function (e, list) {
                        $(this).trigger("sortStart");
                        config.sortList = list;
                        var sortList = config.sortList;
                        updateHeaderSortCount(this, sortList);
                        setHeadersCss(this, $headers, sortList, sortCSS);
                        appendToTable(this, multisort(this, sortList, cache));
                    }).bind("appendCache", function () {
                        appendToTable(this, cache);
                    }).bind("applyWidgetId", function (e, id) {
                        getWidgetById(id).format(this);
                    }).bind("applyWidgets", function () {
                        applyWidget(this);
                    });
                    if ($.metadata && ($(this).metadata() && $(this).metadata().sortlist)) {
                        config.sortList = $(this).metadata().sortlist;
                    }
                    if (config.sortList.length > 0) {
                        $this.trigger("sorton", [config.sortList]);
                    }
                    applyWidget(this);
                });
            };
            this.addParser = function (parser) {
                var l = parsers.length,
                    a = true;
                for (var i = 0; i < l; i++) {
                    if (parsers[i].id.toLowerCase() == parser.id.toLowerCase()) {
                        a = false;
                    }
                }
                if (a) {
                    parsers.push(parser);
                };
            };
            this.addWidget = function (widget) {
                widgets.push(widget);
            };
            this.formatFloat = function (s) {
                var i = parseFloat(s);
                return (isNaN(i)) ? 0 : i;
            };
            this.formatInt = function (s) {
                var i = parseInt(s);
                return (isNaN(i)) ? 0 : i;
            };
            this.isDigit = function (s, config) {
                return /^[-+]?\d*$/.test($.trim(s.replace(/[,.']/g, '')));
            };
            this.clearTableBody = function (table) {
                if ($.browser.msie) {
                    function empty() {
                        while (this.firstChild) this.removeChild(this.firstChild);
                    }
                    empty.apply(table.tBodies[0]);
                } else {
                    table.tBodies[0].innerHTML = "";
                }
            };
        }
    });
    $.fn.extend({
        table: $.table.construct
    });
    var ts = $.table;
    ts.addParser({
        id: "text",
        is: function (s) {
            return true;
        },
        format: function (s) {
            return $.trim(s.toLocaleLowerCase());
        },
        type: "text"
    });
    ts.addParser({
        id: "digit",
        is: function (s, table) {
            var c = table.config;
            return $.table.isDigit(s, c);
        },
        format: function (s) {
            return $.table.formatFloat(s);
        },
        type: "numeric"
    });
    ts.addParser({
        id: "currency",
        is: function (s) {
            return /^[Â£$â‚¬?.]/.test(s);
        },
        format: function (s) {
            return $.table.formatFloat(s.replace(new RegExp(/[Â£$â‚¬]/g), ""));
        },
        type: "numeric"
    });
    ts.addParser({
        id: "ipAddress",
        is: function (s) {
            return /^\d{2,3}[\.]\d{2,3}[\.]\d{2,3}[\.]\d{2,3}$/.test(s);
        },
        format: function (s) {
            var a = s.split("."),
                r = "",
                l = a.length;
            for (var i = 0; i < l; i++) {
                var item = a[i];
                if (item.length == 2) {
                    r += "0" + item;
                } else {
                    r += item;
                }
            }
            return $.table.formatFloat(r);
        },
        type: "numeric"
    });
    ts.addParser({
        id: "url",
        is: function (s) {
            return /^(https?|ftp|file):\/\/$/.test(s);
        },
        format: function (s) {
            return jQuery.trim(s.replace(new RegExp(/(https?|ftp|file):\/\//), ''));
        },
        type: "text"
    });
    ts.addParser({
        id: "isoDate",
        is: function (s) {
            return /^\d{4}[\/-]\d{1,2}[\/-]\d{1,2}$/.test(s);
        },
        format: function (s) {
            return $.table.formatFloat((s != "") ? new Date(s.replace(new RegExp(/-/g), "/")).getTime() : "0");
        },
        type: "numeric"
    });
    ts.addParser({
        id: "percent",
        is: function (s) {
            return /\%$/.test($.trim(s));
        },
        format: function (s) {
            return $.table.formatFloat(s.replace(new RegExp(/%/g), ""));
        },
        type: "numeric"
    });
    ts.addParser({
        id: "usLongDate",
        is: function (s) {
            return s.match(new RegExp(/^[A-Za-z]{3,10}\.? [0-9]{1,2}, ([0-9]{4}|'?[0-9]{2}) (([0-2]?[0-9]:[0-5][0-9])|([0-1]?[0-9]:[0-5][0-9]\s(AM|PM)))$/));
        },
        format: function (s) {
            return $.table.formatFloat(new Date(s).getTime());
        },
        type: "numeric"
    });
    ts.addParser({
        id: "shortDate",
        is: function (s) {
            return /\d{1,2}[\/\-]\d{1,2}[\/\-]\d{2,4}/.test(s);
        },
        format: function (s, table) {
            var c = table.config;
            s = s.replace(/\-/g, "/");
            if (c.dateFormat == "us") {
                s = s.replace(/(\d{1,2})[\/\-](\d{1,2})[\/\-](\d{4})/, "$3/$1/$2");
            } else if (c.dateFormat == "uk") {
                s = s.replace(/(\d{1,2})[\/\-](\d{1,2})[\/\-](\d{4})/, "$3/$2/$1");
            } else if (c.dateFormat == "dd/mm/yy" || c.dateFormat == "dd-mm-yy") {
                s = s.replace(/(\d{1,2})[\/\-](\d{1,2})[\/\-](\d{2})/, "$1/$2/$3");
            }
            return $.table.formatFloat(new Date(s).getTime());
        },
        type: "numeric"
    });
    ts.addParser({
        id: "time",
        is: function (s) {
            return /^(([0-2]?[0-9]:[0-5][0-9])|([0-1]?[0-9]:[0-5][0-9]\s(am|pm)))$/.test(s);
        },
        format: function (s) {
            return $.table.formatFloat(new Date("2000/01/01 " + s).getTime());
        },
        type: "numeric"
    });
    ts.addParser({
        id: "metadata",
        is: function (s) {
            return false;
        },
        format: function (s, table, cell) {
            var c = table.config,
                p = (!c.parserMetadataName) ? 'sortValue' : c.parserMetadataName;
            return $(cell).metadata()[p];
        },
        type: "numeric"
    });
    ts.addWidget({
        id: "zebra",
        format: function (table) {
            if (table.config.debug) {
                var time = new Date();
            }
            var $tr, row = -1,
                odd;
            $("tr:visible", table.tBodies[0]).each(function (i) {
                $tr = $(this);
                if (!$tr.hasClass(table.config.cssChildRow)) row++;
                odd = (row % 2 == 0);
                $tr.removeClass(table.config.widgetZebra.css[odd ? 0 : 1]).addClass(table.config.widgetZebra.css[odd ? 1 : 0])
            });
            if (table.config.debug) {
                $.table.benchmark("Applying Zebra widget", time);
            }
        }
    });
})(jQuery);

// @PLUGIN Table pagination by Christian Bach and customization by me, such as dots nav, automatic generation of pagination elements etc.
(function($) {
	$.extend({
		pagination: new function() {
			
			function updatePageDisplay(c) {
				var s = $(c.cssPageDisplay,c.container).val((c.page+1) + c.seperator + c.totalPages);	
			}
			
			function dots(table) {
				var c = table.config;

				if(c.container.children('ul.round.table').length>0) {
					c.container.children('ul.round.table').remove();
				}
				
				c.container.append('<ul class="round table" />')
				for (var i = 0; i < c.totalPages; i ++) {
					c.container.children('ul.round.table').append("<li>"+i+"</li>");
				}
				
				c.container.children("ul.round.table").children("li:first-child").addClass("current");
				
				$(c.container + "ul.round.table li").live("tap", function() {
					c.page = parseInt($(this).text());
					moveToPage(table);
					$(this).parents("ul.round").children(".current").removeClass("current");
					$(this).addClass("current");
				});
			}
			
			function setPageSize(table,size) {
				var c = table.config;
				c.size = size;
				c.totalPages = Math.ceil(c.totalRows / c.size);
				c.pagerPositionSet = false;
				moveToPage(table);
				dots(table);
				fixPosition(table);
			}
			
			function fixPosition(table) {
				var c = table.config;
				if(!c.pagerPositionSet && c.positionFixed) {
					var c = table.config, o = $(table);
					if(o.offset) {
						c.container.css({
							top: o.offset().top + o.height() + 'px',
							position: 'absolute'
						});
					}
					c.pagerPositionSet = true;
				}
			}
			
			function moveToFirstPage(table) {
				var c = table.config;
				c.page = 0;
				moveToPage(table);
			}
			
			function moveToLastPage(table) {
				var c = table.config;
				c.page = (c.totalPages-1);
				moveToPage(table);
			}
			
			function moveToNextPage(table) {
				var c = table.config;
				c.page++;
				if(c.page >= (c.totalPages-1)) {
					c.page = (c.totalPages-1);
				}
				moveToPage(table);
			}
			
			function moveToPrevPage(table) {
				var c = table.config;
				c.page--;
				if(c.page <= 0) {
					c.page = 0;
				}
				moveToPage(table);
			}
						
			
			function moveToPage(table) {
				var c = table.config;
				if(c.page < 0 || c.page > (c.totalPages-1)) {
					c.page = 0;
				}
				var number = c.page + 1;
				$(c.container + "ul.round.table li.current").removeClass("current");
				$(c.container + "ul.round.table li:nth-child(" +number+ ")").addClass("current");
				renderTable(table,c.rowsCopy);
			}
			
			function renderTable(table,rows) {
				
				var c = table.config;
				var l = rows.length;
				var s = (c.page * c.size);
				var e = (s + c.size);
				if(e > rows.length ) {
					e = rows.length;
				}
				
				
				var tableBody = $(table.tBodies[0]);
				
				// clear the table body
				
				$.table.clearTableBody(table);
				
				for(var i = s; i < e; i++) {
					
					//tableBody.append(rows[i]);
					
					var o = rows[i];
					var l = o.length;
					for(var j=0; j < l; j++) {
						
						tableBody[0].appendChild(o[j]);

					}
				}
				
				fixPosition(table,tableBody);
				
				$(table).trigger("applyWidgets");
				
				if( c.page >= c.totalPages ) {
        			moveToLastPage(table);
				}
				
				updatePageDisplay(c);
			}
			
			this.appender = function(table,rows) {
				
				var c = table.config;
				
				c.rowsCopy = rows;
				c.totalRows = rows.length;
				c.totalPages = Math.ceil(c.totalRows / c.size);
				
				renderTable(table,rows);
			};
			
			this.defaults = {
				size: 15,
				offset: 0,
				page: 0,
				extended: false,
				totalRows: 0,
				totalPages: 0,
				container: null,
				pageOptions: "5,10,20,40,80,100,200",
				dots: true,
				seperator: "/",
				positionFixed: false,
				appender: this.appender
			};
			
			this.construct = function(settings) {
				
				return this.each(function() {	
					
					config = $.extend(this.config, $.pagination.defaults, settings);
					
					var table = this, pager = config.container;
					
					$(this).trigger("appendCache");
					
					
					$(this).after('<div class="pagination" />');
					pager = $(this).siblings('.pagination');
					config.container = pager;
					
					
					if(config.dots==true) {
						dots(table);
					}
					
					if(config.extended==true) {
						pager.prepend('<button class="first">First</button><button class="prev sugar">Previous</button><button class="next red">Next</button><button class="last">Last</button>');
						$('.first',pager).click(function() {
							moveToFirstPage(table);
							return false;
						});
						$('.next',pager).click(function() {
							moveToNextPage(table);
							return false;
						});
						$('.prev',pager).click(function() {
							moveToPrevPage(table);
							return false;
						});
						$('.last',pager).click(function() {
							moveToLastPage(table);
							return false;
						});
						if(config.pageOptions) {
							var i;
							var views = config.pageOptions;
							views = views.split(",");
							
							$('.last', pager).after('<span class="number"></span>');
							
							for(i = 0; i < views.length; i++){
								$('.number', pager).append('<span>' + views[i] + '</span>'); 
							}
						}
						$('.number > span',pager).bind("tap", function() {
							setPageSize( table, parseInt( $(this).text() ) );
						});
					}
				});
			};
			
		}
	});
	// extend plugin scope
	$.fn.extend({
        pagination: $.pagination.construct
	});
	
})(jQuery);
 
