/**


 * @name Grid


 * @author Rick Hopkins


 * @classDescription


 * Sort table data


 * MIT-style License.


 */





var Grid = new Class({


	/** define some variables */


	table: false, 


	headers: false, 


	data: false, 


	


	/**


	 * Initialize the object


	 */


	initialize: function(table){


		this.table = table;


		this.getHeaders();


	}, 


	


	/**


	 * Get the headers


	 */


	getHeaders: function(){


		this.headers = this.table.getElements('thead tr th');


		this.headers.each(function(h, index){


			//h.store('asc', false);


			if (h.hasClass('sort')) h.addEvent('click', function(){


				if(h.hasClass('asc')){


					h.className = 'sort desc';


					


					//h.addClassName('desc');


				}else{


					h.className = 'sort asc';


					//h.addClassName('asc');


				}


				//if (h.retrieve('asc')) h.store('asc', false);


				//else h.store('asc', true);


				//this.sort($('tblrank_id'));


				this.sort(index);


			}.bind(this));


		}, this);


	}, 


	


	/**


	 * Get the table data


	 */


	getData: function(){


		this.data = this.table.getElements('tbody tr');


	}, 


	


	/**


	 * Sort the data


	 * @param int index


	 */


	sort: function(index){


		this.getData();


		data = [];


		sortType = this.headers[index].getProperty('axis');


		


		asc = this.headers[index].hasClass('asc');//this.headers[index].retrieve('asc');


		if (this.data.length > 0) this.data.each(function(row, i){


			cells = row.getElements('td');


			if (cells.length < this.headers.length) return false;


			value = cells[index].innerHTML;


			


			if(cells[index].childNodes[0].nodeName.toLowerCase() == "a"){


				//alert(cells[index].childNodes[0].innerHTML);


				value = cells[index].childNodes[0].innerHTML;


			}


			


			if (sortType == 'int' || sortType == 'float'){


				if (value.contains('$') || value.contains(',')) value = value.replace(/\$/g, '').replace(/,/g, '').toFloat();


				else value = value.toFloat();


			} else if (sortType == 'date') value = Date.parse(value);


			data.push({'index': i, 'value': value, 'row': row});


		}, this);


		


		if (sortType == 'int' || sortType == 'float' || sortType == 'date') data.sort(this.sortNumeric);


		else data.sort(this.sortCaseInsensitive);


		if (!asc) data.reverse();


		


		this.data = [];


		data.each(function(d, i){


			this.data.push(d.row);


		}, this);


		


		this.data.each(function(row, i){


			if (row.hasClass('r1')) row.removeClass('r1');


			if (row.hasClass('r2')) row.removeClass('r2');


			this.table.getElement('tbody').adopt(row.addClass((i % 2 == 0 ? 'r1' : 'r2')));


		}, this);


	}, 


	


	/**


	 * Sort Numerica Values


	 * @param object a


	 * @param object b


	 */


	sortNumeric: function(a, b){


		if ($type(a.value) != 'number') a.value = 0;


		if ($type(b.value) != 'number') b.value = 0;


		return a.value - b.value;


	}, 


	


	sortCaseInsensitive: function(a, b){


		a.value = a.value.toLowerCase();


		b.value = b.value.toLowerCase();


		if (a.value == b.value) return 0;


		if (a.value < b.value) return -1;


		return 1;


	}


});