/**
* jQuery.colorize
* Copyright (c) 2008 Eric Karimov - ekarim57(at)gmail(dot)com | http://franca.exofire.net/jq/
* Dual licensed under MIT and GPL.
* Date: 4/31/2009
*
* @projectDescription Table colorize using jQuery.
* http://franca.exofire.net/jq/colorize
*
* @author Eric Karimov, contributor Aymeric Augustin
* @version 1.4.0
*
* @param {altColor, bgColor, hoverColor, hiliteColor,oneClick, columns, banColumns}
* altColor : alternate row background color
* bgColor : background color (The default background color is white).
* hoverColor : background color when you hover a mouse over a row
* hiliteColor : row highlight background color, 'none' could be used for no highlight
* hiliteClass: style class be used to highlight a row or a column, takes precedence over the hiliteColor setting
* oneClick : true/false(default) -	 if true, clicking a new row reverts the current highlighted row to the original background color
* columns : true/false(default)  - if true, highlights columns instead of rows
* banColumns : []	- columns not to be highlighted or hovered over; supply an array of column indices, starting from 0
* @return {jQuery} Returns the same jQuery object, for chaining.
*
* @example $('#tbl1').colorize();
*
* @$('#tbl1').colorize({bgColor:'#EAF6CC', hoverColor:'green', hiliteColor:'red', columns:true, banColumns:[4,5,8]});
*
* @$('#tbl1').colorize({ columns : true, oneClick:true});
* All the parameters are optional.
*/

jQuery.fn.colorize = function(params) {
options = {
      altColor : '#f0f0f0',
		bgColor : '#ffffff',
		hoverColor : '#adceef',
      hiliteColor: 'none',
      hiliteClass: '',
      oneClick: false,
      columns: false,
      hovering: false,
      banColumns: []
   };
   jQuery.extend(options, params);

   var colorHandler = {
      checkHover: function() {
         if (!this.onfire) {
            this.origColor = this.style.backgroundColor;
            if (options.hovering) this.style.backgroundColor = options.hoverColor;
         }
      },
      checkHoverOut: function() {
         if (!this.onfire) {
            this.style.backgroundColor = this.origColor;
         }
      },
      highlight: function() {
         if (options.hiliteClass.length > 0 || options.hiliteColor != 'none')
            this.onfire = true;

         if (options.hiliteClass.length > 0) {
            this.style.backgroundColor = '';
            jQuery(this).addClass(options.hiliteClass);
         }
         else if (options.hiliteColor != 'none') {
            this.style.backgroundColor = options.hiliteColor;
         }

      },
      stopHighlight: function() {
         this.onfire = false;
         this.style.backgroundColor = this.origColor;
         jQuery(this).removeClass(options.hiliteClass);
      }
   }

   function getColCells(cells, idx) {
      var arr = [];
      for (var i = 0; i < cells.length; i++) {
         if (cells[i].cellIndex == idx)
            arr.push(cells[i]);
      }
      return arr;
   }

   function processCells(cells, idx, func) {
      var colCells = getColCells(cells, idx);
      jQuery.each(colCells, function(index, cell2) {
         func.call(cell2);
      });
   }

   function processAdapter(cells, cell, func) {
      processCells(cells, cell.cellIndex, func);
   }

   function toggleColumnClick(cells) {
      var func = (!this.onfire) ? colorHandler.highlight : colorHandler.stopHighlight;
      processAdapter(cells, this, func);
   }

   function toggleRowClick(cells) {
      row = jQuery(this).parent().get(0);
      if (!row.onfire)
         colorHandler.highlight.call(row);
      else
         colorHandler.stopHighlight.call(row);
   }

   function oneColumnClick(cells) {
      processAdapter(cells, this, colorHandler.highlight);
      if (cells.clicked > -1) {
         processCells(cells, cells.clicked, colorHandler.stopHighlight);
      }
      cells.clicked = this.cellIndex;
   }

   function oneRowClick(cells) {
      row = jQuery(this).parent().get(0);
      colorHandler.highlight.call(row);
      if (cells.clicked) {
         colorHandler.stopHighlight.call(jQuery(cells.clicked).parent().get(0));
      }
      cells.clicked = this;
   }

   function checkBan() {
      return (jQuery.inArray(this.cellIndex, options.banColumns) != -1);
   }

   return this.each(function() {

      jQuery(this).find('tr:odd').css('background', options.bgColor);
      jQuery(this).find('tr:even').css('background', options.altColor);

      var cells = jQuery(this).find('td,th');
      cells.clicked = null;

      if (options.columns) {
         jQuery.each(cells, function(i, cell) {
            cell.onmouseover = function() {
               if (checkBan.call(this)) return;
               processAdapter(cells, this, colorHandler.checkHover);
            }
            cell.onmouseout = function() {
               if (checkBan.call(this)) return;
               processAdapter(cells, this, colorHandler.checkHoverOut);
            }
            cell.onclick = function() {
               if (checkBan.call(this)) return;
               if (options.oneClick)
                  oneColumnClick.call(this, cells);
               else
                  toggleColumnClick.call(this, cells);
            }
         });
      }
      else {
         jQuery.each(cells, function(i, cell) {
            row = jQuery(cell).parent().get(0);
            row.onmouseover = colorHandler.checkHover;
            row.onmouseout = colorHandler.checkHoverOut;
            cell.onclick = function() {
               if (checkBan.call(this))
                  return;
               if (options.oneClick)
                  oneRowClick.call(this, cells);
               else
                  toggleRowClick.call(this, cells);
            }
         });
      }
   });
}