/*
 *
 * TableSorter - Client-side table sorting with ease!
 *
 * Copyright (c) 2006 Christian Bach (http://motherrussia.polyester.se)
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 *
 * jQueryDate: 
 * jQueryAuthor: Christian jQuery
 *
 */
jQuery.fn.tableSorter = function(o) {

	var defaults =  {
		sortDir: 0,
		sortColumn: null,
		sortClassAsc: 'ascending',
		sortClassDesc: 'descending',
		headerClass: null,
		stripingRowClass: false,
		highlightClass: false,
		rowLimit: 0,
		minRowsForWaitingMsg: 0,
		disableHeader: -1,
		stripRowsOnStartUp: false,
		columnParser: false,
		rowHighlightClass: true,
		useCache: true,
		debug: false,
		textExtraction: 'simple',
		textExtractionCustom: false,
		bind: true,
		addHeaderLink: false,
		lockedSortDir: false,
		dateFormat: 'mm/dd/yyyy' /** us default, uk dd/mm/yyyy */
	};

	/** init transfer object */
	
 
	return this.each(function(){
	
		/** merge default with custom options */
		jQuery.extend(defaults, o);

		/** Private vars */
		var COLUMN_DATA = [];			/** array for storing columns */
		var COLUMN_CACHE = [];			/** array for storing sort caches.*/
		var COLUMN_INDEX;				/** int for storing current cell index */
		var COLUMN_SORTER_CACHE = [];	/** array for sorter parser cache */
		var COLUMN_CELL;				/** stores the current cell object */
		var COLUMN_DIR;					/** stores the current soring direction */
		var COLUMN_HEADER_LENGTH;		/** stores the columns header length */
		var COLUMN_ROW_LENGTH;
		var ROW_LAST_HIGHLIGHT_OBJ = false;
		var COLUMN_LAST_INDEX = -1;
		var COLUMN_LAST_DIR = defaults.sortDir;

		/** table object holder.*/
		var oTable = this;

		if(defaults.stripRowsOnStartUp && defaults.stripingRowClass) {
			jQuery.tableSorter.utils.stripRows(oTable,defaults);
		}
		
		/** this is consired evil */
		jQuery.extend(this, {
			getTransfer: function() {
				return this.data;
			},
			setTransfer: function(d) {
				this.data = d
			},
			removeTransfer: function() {
				this.data = null;
			}
			
		})
		
		if(defaults.bind) {
			/** bind events to the tablesorter element */
			jQuery(this).bind("resort",doSorting);
			jQuery(this).bind("flushCache",flushCache);
			
			/** methods for appender */
			jQuery(this).bind("getColumnData",getColumnData);
			jQuery(this).bind("append",appendRow);
			
			
		}
		
		
		/** Store length of table rows. */
		var tableRowLength = oTable.tBodies[0].rows.length-1;

		/** Index column data. */
		buildColumnDataIndex();

		function buildColumnHeaders() {
			var oFirstTableRow = oTable.rows[0];
			var oDataSampleRow = oTable.rows[1];
			/** store column length */
			COLUMN_HEADER_LENGTH = oFirstTableRow.cells.length;
			/** loop column headers */
			for( var i=0; i < COLUMN_HEADER_LENGTH; i++ ) {
				var oCell = oFirstTableRow.cells[i];

				if(oDataSampleRow && !jQuery.tableSorter.utils.isHeaderDisabled(oCell,defaults.disableHeader,i)) {
					/** get current cell from columns headers */
					jQuery.tableSorter.utils.setParams(defaults);
					var oCellValue = jQuery.tableSorter.utils.getElementText(oDataSampleRow.cells[i],'columns',i);
					/** check for default column. */
					if(typeof(defaults.sortColumn) == "string") {
						if(defaults.sortColumn.toLowerCase() == jQuery.tableSorter.utils.getElementText(oCell,'header',i).toLowerCase()) {
							defaults.sortColumn = i;
						}
					}

					/** get sorting method for column. */
					COLUMN_SORTER_CACHE[i] = jQuery.tableSorter.analyzer.analyseString(oCellValue,defaults);

					/** if we have a column parser, set it manual. */
					if(defaults.columnParser) {
						var a = defaults.columnParser;
						var l = a.length;
						for(var j=0; j < l; j++) {
							if(i == a[j][0]) {
								COLUMN_SORTER_CACHE[i] = jQuery.tableSorter.analyzer.getById(a[j][1]);

								continue;
							}
						}
					}

					if(defaults.headerClass) {
						jQuery(oCell).addClass(defaults.headerClass);
					}
					if(defaults.addHeaderLink) {
						jQuery(oCell).wrapInner({element: '<a href="#">', name: 'a', className: 'sorter'});

						jQuery(".sorter",oCell).click(function(e) {
							sortOnColumn( jQuery(this).parent(), ((defaults.lockedSortDir) ? defaults.lockedSortDir : jQuery(this).parent()[0].count++) % 2, jQuery(this).parent()[0].index );
							return false;
						});
					} else {
						jQuery(oCell).click(function(e) {
							sortOnColumn( jQuery(this), ((defaults.lockedSortDir) ? defaults.lockedSortDir : jQuery(this)[0].count++) % 2, jQuery(this)[0].index );
							return false;
						});
					}

					oCell.index = i;
					oCell.count = defaults.sortDir;
				}
			}
			/** blah, add comment later, code is pretty self explanable. */
			addColGroup(oFirstTableRow);

			/** if we have a init sorting, fire it! */
			if(defaults.sortColumn != null) {
				jQuery(oFirstTableRow.cells[defaults.sortColumn]).trigger("click");
			}

			if(defaults.rowHighlightClass) {
				jQuery("> tbody:first/tr",oTable).click(function() {
					if(ROW_LAST_HIGHLIGHT_OBJ) {
						ROW_LAST_HIGHLIGHT_OBJ.removeClass(defaults.rowHighlightClass);
					}
					ROW_LAST_HIGHLIGHT_OBJ = jQuery(this).addClass(defaults.rowHighlightClass);
				});
			}
		}
		/** break out and put i jQuery.tableSorter? */
		function buildColumnDataIndex() {
			/** make colum data. */
			COLUMN_ROW_LENGTH = oTable.tBodies[0].rows.length;
			var l = COLUMN_ROW_LENGTH;
			for (var i=0;i < l; i++) {
				/** Add the table data to main data array */
				COLUMN_DATA.push(oTable.tBodies[0].rows[i]);
			}
			/** when done, build headers. */
			buildColumnHeaders();
		}	
		function addColGroup(columnsHeader) {
			var oSampleTableRow = oTable.rows[1];
			/** adjust header to the sample rows */
			for(var i=0; i < COLUMN_HEADER_LENGTH; i++) {
				if(oSampleTableRow && oSampleTableRow.cells[i])
					jQuery(columnsHeader.cells[i]).css("width",oSampleTableRow.cells[i].clientWidth + "px");
			}
		}
		/** private clear cache method */
		function flushCache() {
			COLUMN_CACHE = [];
		}
		
		function getColumnData() {
			this.setTransfer(COLUMN_DATA);
		}
		
		function appendRow() {
			/** get from transfet object*/
			var row = this.getTransfer();
			/** append to table dom structure */
			jQuery("> tbody",this).append(row);
			/** add new row to column data */
			addAppendedRowsToIndex();
			/** flush column cache */
			flushCache();
			/** trigger resort */
			doSorting();
		}
		
		function addAppendedRowsToIndex() {
			
			var oldIndex = COLUMN_ROW_LENGTH;
			COLUMN_ROW_LENGTH = oTable.tBodies[0].rows.length;
			var newIndex = COLUMN_ROW_LENGTH;
			
			for (var i=oldIndex;i < newIndex; i++) {
				/** Add the table data to main data array */
				COLUMN_DATA.push(oTable.tBodies[0].rows[i]);
			}
		
		
		
		}
		
		
		function sortOnColumn(oCell,dir,index) {
			/** trigger event sort start. */
			if(tableRowLength > defaults.minRowsForWaitingMsg) {
				jQuery.event.trigger( "sortStart");
			}
			/** define globals for current sorting. */
			COLUMN_INDEX = index;
			COLUMN_CELL = oCell;
			COLUMN_DIR = dir;
			/** clear all classes, need to be optimized. */
			jQuery("th."+defaults.sortClassAsc,oTable).removeClass(defaults.sortClassAsc);
			jQuery("th."+defaults.sortClassDesc,oTable).removeClass(defaults.sortClassDesc);
			/**add active class and append image. */
			jQuery(COLUMN_CELL).addClass((dir % 2 ? defaults.sortClassAsc : defaults.sortClassDesc));
			/** remove highlighting */
			if(defaults.highlightClass) {
				if(COLUMN_LAST_INDEX != COLUMN_INDEX && COLUMN_LAST_INDEX > -1) {
					jQuery("> tbody:first/tr",o).find("> td:eq(" + COLUMN_LAST_INDEX + ")").removeClass(defaults.highlightClass).end();
				}
			}
			/** if this is fired, with a straight call, sortStart / Stop would never be fired. */
			setTimeout(doSorting,0);
		}
		function doSorting() {
			/** added check to see if COLUMN_INDEX is set */
			if(COLUMN_INDEX >= 0) {
				/** array for storing sorted data. */
				var columns;
				/** sorting exist in cache, get it. */
				if(jQuery.tableSorter.cache.exist(COLUMN_CACHE,COLUMN_INDEX) && defaults.useCache) {
					/** get from cache */
					var cache = jQuery.tableSorter.cache.get(COLUMN_CACHE,COLUMN_INDEX);
					/** figure out the way to sort. */
					if(cache.dir == COLUMN_DIR) {
						columns = cache.data;
						cache.dir = COLUMN_DIR;
					} else {
						columns = cache.data.reverse();
						cache.dir = COLUMN_DIR;
					}
				/** sort and cache */
				} else {
					/** return flat data, and then sort it. */
					var flatData = jQuery.tableSorter.data.flatten(COLUMN_DATA,COLUMN_SORTER_CACHE,COLUMN_INDEX);
					/** do sorting, only onces per column. */
					flatData.sort(COLUMN_SORTER_CACHE[COLUMN_INDEX].sorter);
					/** if we have a sortDir, reverse the damn thing. */
					if(COLUMN_LAST_DIR != COLUMN_DIR) {

						flatData.reverse();

					}
					/** rebuild data from flat. */
					columns = jQuery.tableSorter.data.rebuild(COLUMN_DATA,flatData,COLUMN_INDEX,COLUMN_LAST_INDEX);
					/** append to table cache. */
					jQuery.tableSorter.cache.add(COLUMN_CACHE,COLUMN_INDEX,COLUMN_DIR,columns);
					/** good practise */
					flatData = null;
				}
				/** append to table > tbody */
				jQuery.tableSorter.utils.appendToTable(oTable,columns,defaults,COLUMN_INDEX,COLUMN_LAST_INDEX);
				/**defaults.tableAppender(oTable,columns,defaults,COLUMN_INDEX,COLUMN_LAST_INDEX); */

				/** good practise i guess */
				columns = null;
				/** trigger stop event. */
				if(tableRowLength > defaults.minRowsForWaitingMsg) {
					jQuery.event.trigger("sortStop",[COLUMN_INDEX]);
				}
				COLUMN_LAST_INDEX = COLUMN_INDEX;
			}
		}
	});
};

jQuery.fn.sortStart = function(fn) {
	return this.bind("sortStart",fn);
};
jQuery.fn.sortReload = function(fn) {
	return this.bind("sortStart",fn);
};
jQuery.fn.sortStop = function(fn) {
	return this.bind("sortStop",fn);
};

jQuery.fn.sortStop = function(fn) {
	return this.bind("sortStop",fn);
};


jQuery.tableSorter = {
	params: {},
	/** cache functions, okey for now. */
	cache: {
		add: function(cache,index,dir,data) {
			var oCache = {};
			oCache.dir = dir;
			oCache.data = data;
			cache[index] = oCache;
		},
		get: function (cache,index) {
			return cache[index];
		},
		exist: function(cache,index) {
			var oCache = cache[index];
			if(!oCache) {
				return false
			} else {
				return true
			}
		},
		clear: function(cache) {
			cache = [];
		}
	},
	data: {
		flatten: function(columnData,columnCache,columnIndex) {
			var flatData = [];
			var l = columnData.length;
			for (var i=0;i < l; i++) {
				flatData.push([i,columnCache[columnIndex].format(jQuery.tableSorter.utils.getElementText(columnData[i].cells[columnIndex],'columns',columnIndex))]);
			}
			return flatData;
		},
		rebuild: function(columnData,flatData,columnIndex,columnLastIndex) {
			var l = flatData.length;
			var sortedData = [];
			for (var i=0;i < l; i++) {
				sortedData.push(columnData[flatData[i][0]]);
			}
			return sortedData;
		}
	},

	sorters: {},

	parsers: {},

	analyzer: {

		analyzers: [],
		add: function(analyzer) {
			this.analyzers.push(analyzer);
		},
		add_to_front: function(analyzer) {
			this.analyzers.unshift(analyzer);
		},
		analyseString: function(s,params) {
			/** set defaults params. */
			jQuery.tableSorter.utils.setParams(params);
			var l=this.analyzers.length;
			var foundAnalyzer = false;
			for(var i=0; i < l; i++) {

				var analyzer = this.analyzers[i];
				
				if(analyzer.is(s)) {
					foundAnalyzer = true;
					return analyzer;
					continue;
				}
			}
			if(!foundAnalyzer) {
				return jQuery.tableSorter.parsers.generic;
			}
		},
		getById: function(s) {
			var l=this.analyzers.length;
			for(var i=0; i < l; i++) {
				var analyzer = this.analyzers[i];
				if(analyzer.id == s) {
					return analyzer;
					continue;
				}
			}
		}
	},
	utils: {
		setParams: function(o) {
			 jQuery.tableSorter.params = o;
		},
		getParams: function() {
			return jQuery.tableSorter.params;
		},
		getElementText: function(o,type,index) {
			if(!o) return "";
			var defaults = jQuery.tableSorter.utils.getParams();
			var elementText = "";

			if(type == 'header') {
				elementText = jQuery(o).text();
			} else if(type == 'columns') {

				if(defaults.textExtractionCustom && typeof(defaults.textExtractionCustom[index]) == "function") {
					elementText = defaults.textExtractionCustom[index](o);
				} else {
					if(defaults.textExtraction == 'simple') {
						if(o.childNodes[0] && o.childNodes[0].hasChildNodes()) {
							elementText = o.childNodes[0].innerHTML;
						} else {
							elementText = o.innerHTML;
						}

					} else if(defaults.textExtraction == 'complex') {
						// make a jquery object, this will take forever with large tables.
						elementText = jQuery(o).text();
					}

				}

			}
			return elementText;
		},
		appendToTable: function(o,c,defaults,index,lastIndex) {
			var l = c.length;
			jQuery("> tbody:first",o).empty().append(c);
			/** jquery way, need to be benched mark! */
			if(defaults.stripingRowClass) {
				/** remove old! */
				jQuery("> tbody:first/tr",o).removeClass(defaults.stripingRowClass[0]).removeClass(defaults.stripingRowClass[1]);
				/** add new! */
				jQuery.tableSorter.utils.stripRows(o,defaults);
			}
			if(defaults.highlightClass) {
				jQuery("> tbody:first/tr",o).find("> td:eq(" + index + ")").addClass(defaults.highlightClass).end();
			}
			/** empty object, good practice! */
			c=null;
		},
		stripRows: function(o,defaults) {
			jQuery("> tbody:first/tr:visible:even",o).addClass(defaults.stripingRowClass[0]);
			jQuery("> tbody:first/tr:visible:odd",o).addClass(defaults.stripingRowClass[1]);
		},
		isHeaderDisabled: function(o,arg,index) {
			if(typeof(arg) == "number") {
				return (arg == index)? true : false;
			} else if(typeof(arg) == "string") {
				return (arg.toLowerCase() == jQuery.tableSorter.utils.getElementText(o,'header',index).toLowerCase()) ? true : false;
			} else if(arg.parentNode) {
       return (o == arg) ? true : false
			} else if(typeof(arg) == "object") {
				var l = arg.length;
				if(!this.lastFound) { this.lastFound = -1; }
				for(var i=0; i < l; i++) {
					var val = jQuery.tableSorter.utils.isHeaderDisabled(o,arg[i],index);
					if(this.lastFound != i && val) {
						this.lastFound = i;
						return val;
					}
				}
			} else {
				return false
			}
		}
	},
	sorters: {
		generic: function(a,b) {
			return ((a[1] < b[1]) ? -1 : ((a[1] > b[1]) ? 1 : 0));
 		},
 		numeric: function(a,b) {
			return parseFloat(a[1]) && parseFloat(b[1]) ? a[1]-b[1] : 0;
		}
	}
};

jQuery.fn.wrapInner = function(o) {
    return this.each(function(){
                 var jQ = jQuery(this);
                 var c = jQ.html();
                 jQ.empty().append(o.element).find(o.name).html(c).addClass(o.className).end();
    });
};

/**
Sample code for sorting on two columns.
function sortByLastNameThenFirst(a, b) {
	var x = a.LastName.toLowerCase();
	var y = b.LastName.toLowerCase();
	return ((x < y) ? -1 : ((x > y) ? 1 : sortByFirstName(a, b)));
}

jQuery.tableSorter.sorters.generic = function(a,b) {
	return ((a[1] < b[1]) ? -1 : ((a[1] > b[1]) ? 1 : 0));
};
jQuery.tableSorter.sorters.numeric = function(a,b) {
	return a[1]-b[1];
};
*/

jQuery.tableSorter.parsers.generic = {
	id: 'generic',
	is: function(s) {
		return true;
	},
	format: function(s) {
		return s.toLowerCase();
	},
	sorter: jQuery.tableSorter.sorters.generic
};

jQuery.tableSorter.parsers.currency = {
	id: 'currency',
	is: function(s) {
		return s.match(/^[£$]/);
	},
	format: function(s) {
		return parseFloat(s.replace(new RegExp(/[^0-9.]/g),''));
	},
	sorter: jQuery.tableSorter.sorters.numeric
};
jQuery.tableSorter.parsers.integer = {
	id: 'integer',
	is: function(s) {
		return s.match(/^\b\d+\b$/);
	},
	format: function(s) {
		return parseFloat(s);
	},
	sorter: $.tableSorter.sorters.numeric
};

jQuery.tableSorter.parsers.floating = {
	id: 'floating',
	is: function(s) {
		return s.match(new RegExp(/^(\+|-)?[0-9]+\.[0-9]+((E|e)(\+|-)?[0-9]+)?$/));
	},
	format: function(s) {
		return parseFloat(s.replace(new RegExp(/,/),''));
	},
	sorter: jQuery.tableSorter.sorters.numeric
};

jQuery.tableSorter.parsers.ipAddress = {
	id: 'ipAddress',
	is: function(s) {
		return s.match(/^\d{2,3}[\.]\d{2,3}[\.]\d{2,3}[\.]\d{2,3}$/);
	},
	format: function(s) {
		var a = s.split('.');
		var r = '';
		for (var i = 0; i < a.length; i++) {
		   if(a[i].length == 2) {
				r += '0' + a[i];
		   } else {
				r += a[i];
		   }
		}
		return r;
	},
	sorter: jQuery.tableSorter.sorters.numeric
};
jQuery.tableSorter.parsers.url = {
	id: 'url',
	is: function(s) {
		return s.match(new RegExp(/(https?|ftp|file):\/\//));
	},
	format: function(s) {
		return s.replace(new RegExp(/(https?|ftp|file):\/\//),'');
	},
	sorter: jQuery.tableSorter.sorters.generic
};
jQuery.tableSorter.parsers.isoDate = {
	id: 'isoDate',
	is: function(s) {
		return s.match(new RegExp(/^\d{4}[\/-]\d{1,2}[\/-]\d{1,2}$/));
	},
	format: function(s) {
		return parseFloat(new Date(s.replace(new RegExp(/-/g),'/')).getTime());
	},
	sorter: jQuery.tableSorter.sorters.numeric
};
jQuery.tableSorter.parsers.usLongDate = {
	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 parseFloat((new Date(s)).getTime());
	},
	sorter: jQuery.tableSorter.sorters.numeric
};
jQuery.tableSorter.parsers.shortDate = {
	id: 'shortDate',
	is: function(s) {
		return s.match(new RegExp(/\d{1,2}[\/-]\d{1,2}[\/-]\d{2,4}/));
	},
	format: function(s) {
		s = s.replace(new RegExp(/-/g),'/');
		var defaults = jQuery.tableSorter.utils.getParams();
		if(defaults.dateFormat == "mm/dd/yyyy" || defaults.dateFormat == "mm-dd-yyyy") {
			/** reformat the string in ISO format */
			s = s.replace(new RegExp(/(\d{1,2})[\/-](\d{1,2})[\/-](\d{4})/), '$3/$1/$2');
		} else if(defaults.dateFormat == "dd/mm/yyyy" || defaults.dateFormat == "dd-mm-yyyy") {
			/** reformat the string in ISO format */
			s = s.replace(new RegExp(/(\d{1,2})[\/-](\d{1,2})[\/-](\d{4})/), '$3/$2/$1');
		}
		return parseFloat((new Date(s)).getTime());
	},
	sorter: jQuery.tableSorter.sorters.numeric
};
jQuery.tableSorter.parsers.time = {
    id: 'time',
    is: function(s) {
        return s.toUpperCase().match(new RegExp(/^(([0-2]?[0-9]:[0-5][0-9])|([0-1]?[0-9]:[0-5][0-9]\s(AM|PM)))$/));
    },
    format: function(s) {
        return parseFloat((new Date("2000/01/01 " + s)).getTime());
    },
    sorter: jQuery.tableSorter.sorters.numeric
};
/** add parsers */
jQuery.tableSorter.analyzer.add(jQuery.tableSorter.parsers.currency);
jQuery.tableSorter.analyzer.add(jQuery.tableSorter.parsers.integer);
jQuery.tableSorter.analyzer.add(jQuery.tableSorter.parsers.isoDate);
jQuery.tableSorter.analyzer.add(jQuery.tableSorter.parsers.shortDate);
jQuery.tableSorter.analyzer.add(jQuery.tableSorter.parsers.usLongDate);
jQuery.tableSorter.analyzer.add(jQuery.tableSorter.parsers.ipAddress);
jQuery.tableSorter.analyzer.add(jQuery.tableSorter.parsers.url);
jQuery.tableSorter.analyzer.add(jQuery.tableSorter.parsers.time);
jQuery.tableSorter.analyzer.add(jQuery.tableSorter.parsers.floating);