/**
* jQuery.colorize
* Copyright (c) 2008 Eric Karimov - ekarim57(at)gmail(dot)com | http://franca.exofire.net/jq/
* Dual licensed under MIT and GPL.
* Date: 10/27/2008
*
* @projectDescription Table colorize using jQuery.
* http://franca.exofire.net/jq/colorize
*
* @author Eric Karimov, contributor Aymeric Augustin
* @version 1.3.1
*
* @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
* 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; 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: '#ECF6FC',
        bgColor: '#fff',
        hoverColor: '#BCD4EC',
        hiliteColor: '#AFC8FF',
        oneClick: false,
        columns: false,
        banColumns: []
    };
    jQuery.extend(options, params);

    var colorHandler = {
        checkHover: function() {
            if (!this.onfire) {
                this.origColor = this.style.backgroundColor;
                this.style.backgroundColor = options.hoverColor;
            }
        },
        checkHoverOut: function() {
            if (!this.onfire) {
                this.style.backgroundColor = this.origColor;
            }
        },
        highlight: function() {
            if (options.hiliteColor != 'none') {
                this.style.backgroundColor = options.hiliteColor;
                this.onfire = true;
            }
        },
        stopHighlight: function() {
            this.onfire = false;
            this.style.backgroundColor = this.origColor;
        }
    }

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


        var cells = jQuery(this).find('tbody tr td');
        cells.clicked = null;

        if (options.columns) {
            jQuery.each(cells, function(i, cell) {
                cell.onmouseover = function() {
                    processAdapter(cells, this, colorHandler.checkHover);
                }
                cell.onmouseout = function() {
                    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);
                }
            });
        }
    });
}