/*
* File:        jquery.dataTables.columnFilter.js
* Version:     1.4.1.
* Author:      Jovan Popovic 
* 
* Copyright 2011 Jovan Popovic, all rights reserved.
*
* This source file is free software, under either the GPL v2 license or a
* BSD style license, as supplied with this software.
* 
* This source file is distributed in the hope that it will be useful, but 
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
* or FITNESS FOR A PARTICULAR PURPOSE. 
* 
* Parameters:"
* @sPlaceHolder                 String      Place where inline filtering function should be placed ("tfoot", "thead:before", "thead:after"). Default is "tfoot"
* @sRangeSeparator              String      Separator that will be used when range values are sent to the server-side. Default value is "~".
* @sRangeFormat                 string      Default format of the From ... to ... range inputs. Default is From {from} to {to}
* @aoColumns                    Array       Array of the filter settings that will be applied on the columns
*/
(function ($) {


    $.fn.columnFilter = function (options) {

        var asInitVals, i, label, th;

        //var sTableId = "table";
        var sRangeFormat = "From {from} to {to}";
        //Array of the functions that will override sSearch_ parameters
        var afnSearch_ = new Array();
        var aiCustomSearch_Indexes = new Array();

        var oFunctionTimeout = null;

        var fnOnFiltered = function () { };

        function _fnGetColumnValues(oSettings, iColumn, bUnique, bFiltered, bIgnoreEmpty) {
            ///<summary>
            ///Return values in the column
            ///</summary>
            ///<param name="oSettings" type="Object">DataTables settings</param>
            ///<param name="iColumn" type="int">Id of the column</param>
            ///<param name="bUnique" type="bool">Return only distinct values</param>
            ///<param name="bFiltered" type="bool">Return values only from the filtered rows</param>
            ///<param name="bIgnoreEmpty" type="bool">Ignore empty cells</param>

            // check that we have a column id
            if (typeof iColumn == "undefined") return new Array();

            // by default we only wany unique data
            if (typeof bUnique == "undefined") bUnique = true;

            // by default we do want to only look at filtered data
            if (typeof bFiltered == "undefined") bFiltered = true;

            // by default we do not wany to include empty values
            if (typeof bIgnoreEmpty == "undefined") bIgnoreEmpty = true;

            // list of rows which we're going to loop through
            var aiRows;

            // use only filtered rows
            if (bFiltered == true) aiRows = oSettings.aiDisplay;
            // use all rows
            else aiRows = oSettings.aiDisplayMaster; // all row numbers

            // set up data array
            var asResultData = new Array();

            for (var i = 0, c = aiRows.length; i < c; i++) {
                iRow = aiRows[i];
                var aData = oTable.fnGetData(iRow);
                var sValue = aData[iColumn];

                // ignore empty values?
                if (bIgnoreEmpty == true && sValue.length == 0) continue;

                // ignore unique values?
                else if (bUnique == true && jQuery.inArray(sValue, asResultData) > -1) continue;

                // else push the value onto the result data array
                else asResultData.push(sValue);
            }
	    //sort() only for sorting data on select list, added later by Ervin Fehér
            return asResultData.sort();
        }

        function _fnColumnIndex(iColumnIndex) {
            if (properties.bUseColVis)
                return iColumnIndex;
            else
                return oTable.fnSettings().oApi._fnVisibleToColumnIndex(oTable.fnSettings(), iColumnIndex);
            //return iColumnIndex;
            //return oTable.fnSettings().oApi._fnColumnIndexToVisible(oTable.fnSettings(), iColumnIndex);
        }

        function fnCreateInput(oTable, regex, smart, bIsNumber, iFilterLength) {
            var sCSSClass = "text_filter";
            if (bIsNumber)
                sCSSClass = "number_filter";

            label = label.replace(/(^\s*)|(\s*$)/g, "");
            var currentFilter = oTable.fnSettings().aoPreSearchCols[i].sSearch;
            var search_init = 'search_init ';
            var inputvalue = label;
            if(currentFilter != '' && currentFilter != '^') {
	    	if(bIsNumber && currentFilter.charAt(0) == '^')
	    		inputvalue = currentFilter.substr(1); //ignore trailing ^
		else
            		inputvalue = currentFilter;
            	search_init = '';
            }
            
            var input = $('<input type="text" class="' + search_init + sCSSClass + '" value="' + inputvalue + '"/>');
            th.html(input);
            if (bIsNumber)
                th.wrapInner('<span class="filter_column filter_number" />');
            else
                th.wrapInner('<span class="filter_column filter_text" />');
            asInitVals[i] = label;
            var index = i;

            if (bIsNumber && !oTable.fnSettings().oFeatures.bServerSide) {
                input.keyup(function () {
                    /* Filter on the column all numbers that starts with the entered value */
                    oTable.fnFilter('^' + this.value, _fnColumnIndex(index), true, false);//Issue 37
                    fnOnFiltered();
                });
            } else {
                input.keyup(function () {
                	if(oTable.fnSettings().oFeatures.bServerSide && iFilterLength!=0) {
				//If filter length is set in the server-side processing mode
				//Check has the user entered at least iFilterLength new characters
				
                		var currentFilter = oTable.fnSettings().aoPreSearchCols[index].sSearch;
                		var iLastFilterLength = $(this).data("dt-iLastFilterLength");
				if(typeof iLastFilterLength == "undefined")
					iLastFilterLength = 0;
				var iCurrentFilterLength = this.value.length;
				if(	Math.abs(iCurrentFilterLength - iLastFilterLength) < iFilterLength
					//&& currentFilter.length == 0 //Why this?
					)
				{
					//Cancel the filtering
					return;
				}
				else
				{
					//Remember the current filter length
					$(this).data("dt-iLastFilterLength", iCurrentFilterLength );	
				}
                	}
            		/* Filter on the column (the index) of this element */
                    oTable.fnFilter(this.value, _fnColumnIndex(index), regex, smart);//Issue 37
                    fnOnFiltered();
                });
            }

            input.focus(function () {
                if ($(this).hasClass("search_init")) {
                    $(this).removeClass("search_init");
                    this.value = "";
                }
            });
            input.blur(function () {
                if (this.value == "") {
                    $(this).addClass("search_init");
                    this.value = asInitVals[index];
                }
            });
        }

        function fnCreateRangeInput(oTable) {

            th.html(_fnRangeLabelPart(0));
            var sFromId = oTable.attr("id") + '_range_from_' + i;
            var from = $('<input type="text" class="number_range_filter" id="' + sFromId + '" rel="' + i + '"/>');
            th.append(from);
            th.append(_fnRangeLabelPart(1));
            var sToId = oTable.attr("id") + '_range_to_' + i;
            var to = $('<input type="text" class="number_range_filter" id="' + sToId + '" rel="' + i + '"/>');
            th.append(to);
            th.append(_fnRangeLabelPart(2));
            th.wrapInner('<span class="filterColumn filter_number_range" />');
            var index = i;
            aiCustomSearch_Indexes.push(i);



            //------------start range filtering function


            /* 	Custom filtering function which will filter data in column four between two values
            *	Author: 	Allan Jardine, Modified by Jovan Popovic
            */
            //$.fn.dataTableExt.afnFiltering.push(
            oTable.dataTableExt.afnFiltering.push(
	        function (oSettings, aData, iDataIndex) {
	            if (oTable.attr("id") != oSettings.sTableId)
	                return true;
	            var iMin = document.getElementById(sFromId).value * 1;
	            var iMax = document.getElementById(sToId).value * 1;
	            var iValue = aData[_fnColumnIndex(index)] == "-" ? 0 : aData[_fnColumnIndex(index)] * 1;
	            if (iMin == "" && iMax == "") {
	                return true;
	            }
	            else if (iMin == "" && iValue <= iMax) {
	                return true;
	            }
	            else if (iMin <= iValue && "" == iMax) {
	                return true;
	            }
	            else if (iMin <= iValue && iValue <= iMax) {
	                return true;
	            }
	            return false;
	        }
        );
            //------------end range filtering function



            $('#' + sFromId + ',#' + sToId, th).keyup(function () {

                var iMin = document.getElementById(sFromId).value * 1;
                var iMax = document.getElementById(sToId).value * 1;
                if (iMin != 0 && iMax != 0 && iMin > iMax)
                    return;

                oTable.fnDraw();
                fnOnFiltered();
            });


        }


        function fnCreateDateRangeInput(oTable) {
            th.html(_fnRangeLabelPart(0));
            var sFromId = oTable.attr("id") + '_range_from_' + i;
            var from = $('<input type="text" class="date_range_filter" id="' + sFromId + '" rel="' + i + '"/>');
            from.datepicker();
            th.append(from);
            th.append(_fnRangeLabelPart(1));
            var sToId = oTable.attr("id") + '_range_to_' + i;
            var to = $('<input type="text" class="date_range_filter" id="' + sToId + '" rel="' + i + '"/>');
            th.append(to);
            th.append(_fnRangeLabelPart(2));
            th.wrapInner('<span class="filterColumn filter_date_range" />');
            to.datepicker();
            var index = i;
            aiCustomSearch_Indexes.push(i);


            //------------start date range filtering function

            //$.fn.dataTableExt.afnFiltering.push(
            oTable.dataTableExt.afnFiltering.push(
	        function (oSettings, aData, iDataIndex) {
	            if (oTable.attr("id") != oSettings.sTableId)
	                return true;

	            var dStartDate = from.datepicker("getDate");

	            var dEndDate = to.datepicker("getDate");

	            if (dStartDate == null && dEndDate == null) {
	                return true;
	            }

	            var dCellDate = null;
	            try {
	                if (aData[_fnColumnIndex(index)] == null || aData[_fnColumnIndex(index)] == "")
	                    return false;
	                dCellDate = $.datepicker.parseDate($.datepicker.regional[""].dateFormat, aData[_fnColumnIndex(index)]);
	            } catch (ex) {
	                return false;
	            }
	            if (dCellDate == null)
	                return false;


	            if (dStartDate == null && dCellDate <= dEndDate) {
	                return true;
	            }
	            else if (dStartDate <= dCellDate && dEndDate == null) {
	                return true;
	            }
	            else if (dStartDate <= dCellDate && dCellDate <= dEndDate) {
	                return true;
	            }
	            return false;
	        }
        );
            //------------end date range filtering function

            $('#' + sFromId + ',#' + sToId, th).change(function () {
                oTable.fnDraw();
                fnOnFiltered();
            });


        }

        function fnCreateColumnSelect(oTable, aData, iColumn, nTh, sLabel) {
            if (aData == null)
                aData = _fnGetColumnValues(oTable.fnSettings(), iColumn, true, false, true);
            var index = iColumn;
            var currentFilter = oTable.fnSettings().aoPreSearchCols[i].sSearch;

            var r = '<select class="search_init select_filter"><option value="" class="search_init">' + sLabel + '</option>';
            var j = 0;
            var iLen = aData.length;
            for (j = 0; j < iLen; j++) {
                if (typeof (aData[j]) != 'object') {
                	var selected = '';
                	if(escape(aData[j]) == currentFilter) selected = 'selected '
                    r += '<option ' + selected + ' value="' + escape(aData[j]) + '">' + aData[j] + '</option>';
                }
                else {
                	var selected = '';
                	if(escape(aData[j].value) == currentFilter) selected = 'selected '
                    r += '<option ' + selected + 'value="' + escape(aData[j].value) + '">' + aData[j].label + '</option>';
                }
            }

            var select = $(r + '</select>');
            nTh.html(select);
            nTh.wrapInner('<span class="filterColumn filter_select" />');
            select.change(function () {
                //var val = $(this).val();
                if ($(this).val() != "") {
                    $(this).removeClass("search_init");
                } else {
                    $(this).addClass("search_init");
                }
                oTable.fnFilter(unescape($(this).val()), iColumn); //Issue 37
                fnOnFiltered();
            });
        }

        function fnCreateSelect(oTable, aData) {
            var oSettings = oTable.fnSettings();
            if (aData == null && oSettings.sAjaxSource != "" && !oSettings.oFeatures.bServerSide) {
                // Add a function to the draw callback, which will check for the Ajax data having 
                // been loaded. Use a closure for the individual column elements that are used to 
                // built the column filter, since 'i' and 'th' (etc) are locally "global".
                oSettings.aoDrawCallback.push({
                    "fn": (function (iColumn, nTh, sLabel) {
                        return function () {
                            // Only rebuild the select on the second draw - i.e. when the Ajax
                            // data has been loaded.
                            if (oSettings.iDraw == 2 && oSettings.sAjaxSource != null && oSettings.sAjaxSource != "" && !oSettings.oFeatures.bServerSide) {
                                return fnCreateColumnSelect(oTable, null, _fnColumnIndex(iColumn), nTh, sLabel); //Issue 37
                            }
                        };
                    })(i, th, label),
                    "sName": "column_filter_" + i
                });
            }
            // Regardless of the Ajax state, build the select on first pass
            fnCreateColumnSelect(oTable, aData, _fnColumnIndex(i), th, label); //Issue 37

            /*
            var fnOnFilteredCurrent = fnOnFiltered;
            fnOnFiltered = function(){
            fnCreateColumnSelect(oTable, aData, i, th, label);
            fnOnFilteredCurrent();
            };*/

        }

        function fnCreateCheckbox(oTable, aData) {

            if (aData == null)
                aData = _fnGetColumnValues(oTable.fnSettings(), i, true, true, true);
            var index = i;

            var r = '', j, iLen = aData.length;

            //clean the string
            var localLabel = label.replace('%', 'Perc').replace("&", "AND").replace("$", "DOL").replace("£", "STERL").replace("@", "AT").replace(/\s/g, "_");
            localLabel = localLabel.replace(/[^a-zA-Z 0-9]+/g, '');
            //clean the string

            //button label override
            if (properties.sFilterButtonText != null || properties.sFilterButtonText != undefined) {
                labelBtn = properties.sFilterButtonText;
            } else {
                labelBtn = label;
            }

            var relativeDivWidthToggleSize = 10;
            var numRow = 12; //numero di checkbox per colonna
            var numCol = Math.floor(iLen / numRow);
            if (iLen % numRow > 0) {
                numCol = numCol + 1;
            };

            //count how many column should be generated and split the div size
            var divWidth = 100 / numCol - 2;

            var divWidthToggle = relativeDivWidthToggleSize * numCol;

            if (numCol == 1) {
                divWidth = 20;
            }

            var divRowDef = '<div style="float:left; min-width: ' + divWidth + '%; " >';
            var divClose = '</div>';

            var uniqueId = oTable.attr("id") + localLabel;
            var buttonId = "chkBtnOpen" + uniqueId;
            var checkToggleDiv = uniqueId + "-flt-toggle";
            r += '<button id="' + buttonId + '" class="checkbox_filter" > ' + labelBtn + '</button>'; //filter button witch open dialog
            r += '<div id="' + checkToggleDiv + '" '
            	+ 'title="' + label + '" '
            	+ 'class="toggle-check ui-widget-content ui-corner-all"  style="width: ' + (divWidthToggle) + '%; " >'; //dialog div
            //r+= '<div align="center" style="margin-top: 5px; "> <button id="'+buttonId+'Reset" class="checkbox_filter" > reset </button> </div>'; //reset button and its div
            r += divRowDef;

            for (j = 0; j < iLen; j++) {

                //if last check close div
                if (j % numRow == 0 && j != 0) {
                    r += divClose + divRowDef;
                }

                //check button
                r += '<input class="search_init checkbox_filter" type="checkbox" id= "' + aData[j] + '" name= "' + localLabel + '" value="' + aData[j] + '" >' + aData[j] + '<br/>';

                var checkbox = $(r);
                th.html(checkbox);
                th.wrapInner('<span class="filterColumn filter_checkbox" />');
                //on every checkbox selection
                checkbox.change(function () {

                    var search = '';
                    var or = '|'; //var for select checks in 'or' into the regex
                    var resSize = $('input:checkbox[name="' + localLabel + '"]:checked').size();
                    $('input:checkbox[name="' + localLabel + '"]:checked').each(function (index) {

                        //search = search + ' ' + $(this).val();
                        //concatenation for selected checks in or
                        if ((index == 0 && resSize == 1)
                				|| (index != 0 && index == resSize - 1)) {
                            or = '';
                        }
                        //trim
                        search = search.replace(/^\s+|\s+$/g, "");
                        search = search + $(this).val() + or;
                        or = '|';

                    });

                    for (var jj = 0; jj < iLen; jj++) {
                        if (search != "") {
                            $('#' + aData[jj]).removeClass("search_init");
                        } else {
                            $('#' + aData[jj]).addClass("search_init");
                        }
                    }

                    //execute search
                    oTable.fnFilter(search, index, true, false);
                    fnOnFiltered();
                });
            }

            //filter button
            $('#' + buttonId).button();
            //dialog
            $('#' + checkToggleDiv).dialog({
                //height: 140,
                autoOpen: false,
                //show: "blind",
                hide: "blind",
                buttons: [{
                    text: "Töröl",
                    click: function () {
                        //$('#'+buttonId).removeClass("filter_selected"); //LM remove border if filter selected
                        $('input:checkbox[name="' + localLabel + '"]:checked').each(function (index3) {
                            $(this).attr('checked', false);
                            $(this).addClass("search_init");
                        });
                        oTable.fnFilter('', index, true, false);
                        fnOnFiltered();
                        return false;
                    }
                },
							{
							    text: "Bezár",
							    click: function () { $(this).dialog("close"); }
							}
						]
            });


            $('#' + buttonId).click(function () {

                $('#' + checkToggleDiv).dialog('open');
                var target = $(this);
                $('#' + checkToggleDiv).dialog("widget").position({ my: 'top',
                    at: 'bottom',
                    of: target
                });

                return false;
            });

            var fnOnFilteredCurrent = fnOnFiltered;

            fnOnFiltered = function () {
                var target = $('#' + buttonId);
                $('#' + checkToggleDiv).dialog("widget").position({ my: 'top',
                    at: 'bottom',
                    of: target
                });
                fnOnFilteredCurrent();
            };
            //reset
            /*
            $('#'+buttonId+"Reset").button();
            $('#'+buttonId+"Reset").click(function(){
            $('#'+buttonId).removeClass("filter_selected"); //LM remove border if filter selected
            $('input:checkbox[name="'+localLabel+'"]:checked').each(function(index3) {
            $(this).attr('checked', false);
            $(this).addClass("search_init");
            });
            oTable.fnFilter('', index, true, false);
            return false;
            }); 
            */
        }




        function _fnRangeLabelPart(iPlace) {
            switch (iPlace) {
                case 0:
                    return sRangeFormat.substring(0, sRangeFormat.indexOf("{from}"));
                case 1:
                    return sRangeFormat.substring(sRangeFormat.indexOf("{from}") + 6, sRangeFormat.indexOf("{to}"));
                default:
                    return sRangeFormat.substring(sRangeFormat.indexOf("{to}") + 4);
            }
        }




        oTable = this;

        var defaults = {
            sPlaceHolder: "foot",
            sRangeSeparator: "~",
            iFilteringDelay: 500,
            aoColumns: null,
            sRangeFormat: "From {from} to {to}"
        };

        properties = $.extend(defaults, options);

        return this.each(function () {

            if (!oTable.fnSettings().oFeatures.bFilter)
                return;
            asInitVals = new Array();
            var sFilterRow = "tfoot tr";
            if (properties.sPlaceHolder == "head:after") {
                var tr = $("thead tr:last", oTable).detach();
		if(oTable.fnSettings().bSortCellsTop)
		{
                	tr.appendTo($("thead", oTable));
		}
		else
	    	{
	    		tr.prependTo($("thead", oTable));
	    	}
                sFilterRow = "thead tr:last";
            } else if (properties.sPlaceHolder == "head:before") {
                var tr = $("thead tr:first", oTable).detach();
                //tr.attr("id", 1);
				if(oTable.fnSettings().bSortCellsTop)
				{
                	tr.appendTo($("thead", oTable));
				}
				else
				{
                tr.prependTo($("thead", oTable));
				}
                sFilterRow = "thead tr:first";
            }

            $(sFilterRow + " th", oTable).each(function (index) {
                i = index;
                var aoColumn = { type: "text",
                    bRegex: false,
                    bSmart: true,
                    iFilterLength: 0
                };
                if (properties.aoColumns != null) {
                    if (properties.aoColumns.length < i || properties.aoColumns[i] == null)
                        return;
                    aoColumn = properties.aoColumns[i];
                }
                label = $(this).text(); //"Search by " + $(this).text();
                if (aoColumn.sSelector == null)
                    th = $($(this)[0]);
                else {
                    th = $(aoColumn.sSelector);
                    if (th.length == 0)
                        th = $($(this)[0]);
                }

                if (aoColumn != null) {
                    if (aoColumn.sRangeFormat != null)
                        sRangeFormat = aoColumn.sRangeFormat;
                    else
                        sRangeFormat = properties.sRangeFormat
                    switch (aoColumn.type) {
                        case "number":
                            fnCreateInput(oTable, true, false, true, aoColumn.iFilterLength);
                            break;

                        case "select":
                            fnCreateSelect(oTable, aoColumn.values);
                            break;
                        case "number-range":
                            fnCreateRangeInput(oTable);
                            break;
                        case "date-range":
                            fnCreateDateRangeInput(oTable);
                            break;
                        case "checkbox":
                            fnCreateCheckbox(oTable, aoColumn.values);
                            break;
                        case "text":
                        default:
                            bRegex = (aoColumn.bRegex == null ? false : aoColumn.bRegex);
                            bSmart = (aoColumn.bSmart == null ? false : aoColumn.bSmart);
                            fnCreateInput(oTable, bRegex, bSmart, false, aoColumn.iFilterLength);
                            break;

                    }
                }
            });

            for (j = 0; j < aiCustomSearch_Indexes.length; j++) {
                //var index = aiCustomSearch_Indexes[j];
                var fnSearch_ = function () {
                    var id = oTable.attr("id");
                    return $("#" + id + "_range_from_" + aiCustomSearch_Indexes[j]).val() + properties.sRangeSeparator + $("#" + id + "_range_to_" + aiCustomSearch_Indexes[j]).val()
                }
                afnSearch_.push(fnSearch_);
            }

            if (oTable.fnSettings().oFeatures.bServerSide) {

                var fnServerDataOriginal = oTable.fnSettings().fnServerData;

                oTable.fnSettings().fnServerData = function (sSource, aoData, fnCallback) {

                    for (j = 0; j < aiCustomSearch_Indexes.length; j++) {
                        var index = aiCustomSearch_Indexes[j];

                        for (k = 0; k < aoData.length; k++) {
                            if (aoData[k].name == "sSearch_" + index)
                                aoData[k].value = afnSearch_[j]();
                        }
                    }
                    aoData.push({ "name": "sRangeSeparator", "value": properties.sRangeSeparator });

                    if (fnServerDataOriginal != null) {
                        try {
                            fnServerDataOriginal(sSource, aoData, fnCallback, oTable.fnSettings()); //TODO: See Issue 18
                        } catch (ex) {
                            fnServerDataOriginal(sSource, aoData, fnCallback);
                        }
                    }
                    else {
                        $.getJSON(sSource, aoData, function (json) {
                            fnCallback(json)
                        });
                    }

                    /*
                    if (fnServerDataOriginal != null) {
                    if (properties.iDelay != 0) {
                    if (oFunctionTimeout != null)
                    window.clearTimeout(oFunctionTimeout);
                    oFunctionTimeout = window.setTimeout(function () {
                    fnServerDataOriginal(sSource, aoData, fnCallback);
                    }, properties.iDelay);
                    } else {
                    fnServerDataOriginal(sSource, aoData, fnCallback);
                    }
                    }
                    else
                    $.getJSON(sSource, aoData, function (json) {
                    fnCallback(json)
                    });
                    */
                };

            }

        });

    };




})(jQuery);