text: /**
   *
   * JQuery fn.gantt gantt chart plugin v0.2
   * Copyright 2011 by Marek Bielańczuk
   * http://mbielanczuk.com/
   * Released under the MIT and GPL Licenses.
   *
   * Date: Tue Jun 21 00:18:16 +0200 2011
   */
  
  jQuery.fn.gantt = function (options) {
  	var defaults = {
  		source: null,
  		itemsPerPage: 7,
  		months: ["Styczeń", "Luty", "Marzec", "Kwiecień", "Maj", "Czerwiec", "Lipiec", "Sierpień", "Wrzesień", "Październik", "Listopad", "Grudzień"],
  		dow: ["N", "Pn", "Wt", "Śr", "Cz", "Pt", "So"],
  		startPos: new Date()
  	};
  	var options = jQuery.extend(defaults, options);	
  	var data = null;        // Recived data
  	var pageNum = 0;        // Current page number
  	var pageCount = 0;      // Aviable pages count
  	var rowsOnLastPage = 0; // How many rows on last page
  	var rowsNum = 0;        //
  	var hPosition = 0;      // Current position on diagram (Horizontal)
  	var dateStart = null;
  	var dateEnd = null;
  	
  	var create = function(jQuerythis) {
  		if (!options.source)
  			return;
  
  		jQuery.getJSON(options.source, function(rData) {
  			data = rData;
  			rowsNum = data.length;
  			pageCount = Math.ceil(rowsNum/options.itemsPerPage);
  			rowsOnLastPage = rowsNum - (Math.floor(rowsNum/options.itemsPerPage) * options.itemsPerPage);
  			
  			dateStart = tools.getMinDate();
  			dateEnd = tools.getMaxDate();
  
  			var contTable = createContainer();
  			jQuerythis.append(contTable);
  			fillHollydays();
  			fillData();
  			jQuerythis.css({
  				height: jQuery(".fn-gantt").height() + "px"
  			});
  			jQuery('.fn-gantt .dataPanel').css({'margin-left': hPosition+'px'});
  			
  			var d = Math.round((options.startPos/1000 - dateStart/1000) / 86400 )-2;
  			if (d > 0)
  			{
  				navigateTo(-1*d * tools.getCellSize());
  			} else {
  				repositionLabel();
  			}
  		});
  
  		var createContainer = function() {
  			/* Left panel */
  			var ganttLeftPanel = jQuery('<div class="leftPanel"/>')
  				.append(jQuery('<div class="row spacer"/>')
  				.css("height", tools.getCellSize()*4+"px")
  				.css("width", "100%"));
  			jQuery.each(data, function(i, entry) {
  				if (i >= pageNum*options.itemsPerPage && i < (pageNum*options.itemsPerPage+options.itemsPerPage))
  				{
  					ganttLeftPanel
  						.append(jQuery('<div class="row name"/>').append(jQuery('<span class="label"/>').html(entry.name)))
  						.append(jQuery('<div class="row desc"/>').append(jQuery('<span class="label"/>').html(entry.desc)));
  				}
  			});
  
  			/* Navigation panel */
  			var ganttNavigate = jQuery('<div class="navigate" />')
  				.append(jQuery('<a href="javascript:///" class="nav-link nav-page-back"/>')
  					.html('&lt;')
  					.click( function () {
  						navigatePage(-1);
  					}))
  				.append(jQuery('<div class="page-number"/>')
  						.append(jQuery('<span/>')
  							.html(pageNum+1 + ' of ' + pageCount)))
  				.append(jQuery('<a href="javascript:///" class="nav-link nav-page-next"/>')
  					.html('&gt;')
  					.click( function () {
  						navigatePage(1);
  					}))
  				.append(jQuery('<a href="javascript:///" class="nav-link nav-begin"/>')
  					.html('&#124;&lt;')
  					.click( function () {
  						navigateTo('begin');
  					}))
  				.append(jQuery('<a href="javascript:///" class="nav-link nav-prev-week"/>')
  					.html('&lt;&lt;')
  					.click( function () {
  						navigateTo(tools.getCellSize()*7);
  					}))
  				.append(jQuery('<a href="javascript:///" class="nav-link nav-prev-day"/>')
  					.html('&lt;')
  					.click( function () {
  						navigateTo(tools.getCellSize());
  					}))
  				.append(jQuery('<a href="javascript:///" class="nav-link nav-next-day"/>')
  					.html('&gt;')
  					.click( function () {
  						navigateTo(tools.getCellSize() * -1);
  					}))
  				.append(jQuery('<a href="javascript:///" class="nav-link nav-next-week"/>')
  					.html('&gt;&gt;')
  					.click( function () {
  						navigateTo(tools.getCellSize() * -7);
  					}))
  				.append(jQuery('<a href="javascript:///" class="nav-link nav-end"/>')
  					.html('&gt;&#124;')
  					.click( function () {
  						navigateTo('end');
  					}));
  
  			/* Container */
  			var gantt = jQuery('<div class="fn-gantt" />');
  			gantt
  				.append(
  					jQuery('<div class="fn-content"/>')
  					.append(ganttLeftPanel)
  					.append(
  						jQuery('<div class="rightPanel"/>')
  						.append(createDataContainer())
  					))
  				.append(jQuery('<div class="bottom"/>')
  					.append(ganttNavigate));
  
  			return gantt;
  		};
  
  		// Creates Data container with header
  		var createDataContainer = function() {
  			var range = tools.parseDateRange(dateStart, dateEnd);
  
  			var years = jQuery("<div class='row'/>");
  			var year = range[0].getFullYear();
  			var daysInYear = 0;
  
  			var months = jQuery("<div class='row'/>");
  			var month = range[0].getMonth();
  			var daysInMonth = 0;
  			
  			var days = jQuery('<div class="row"/>');
  			var dow = jQuery('<div class="row"/>');
  			
  			var today = new Date();
  			today = new Date(today.getFullYear(), today.getMonth(), today.getDate());
  			
  			jQuery.each(range, function(i, rday) {
  				if (rday.getFullYear() != year) {
  					years.append(jQuery('<div class="row header year"/>')
  						.css("width", tools.getCellSize()*daysInYear + "px")
  						.append(jQuery("<div class='label'/>").html(year)));
  					year = rday.getFullYear();
  					daysInYear = 0;
  				}
  				daysInYear++;
  				
  				if (rday.getMonth() != month) {
  					months.append(jQuery('<div class="row header month"/>')
  						.css("width", tools.getCellSize()*daysInMonth + "px")
  						.append(jQuery("<div class='label'/>").html(options.months[month])));
  					month = rday.getMonth();
  					daysInMonth = 0;
  				}
  				daysInMonth++;
  				var day_class = (today - rday == 0) ? ' today' : (options.hollydays && options.hollydays.join().indexOf(rday.getTime())>-1) ? "hollyday"  : rday.getDay() == 6 ? "sa" : (rday.getDay() == 0 ? "sn" : "wd");
  				days.append(jQuery('<div class="row day '+day_class+'" />').html(rday.getDate()));
  				dow.append(jQuery('<div class="row day '+day_class+'" />').html( options.dow[rday.getDay()] ));
  				
  			});
  
  			years.append(jQuery('<div class="row header year"/>')
  				.css("width", tools.getCellSize()*daysInYear + "px")
  				.append(jQuery("<div class='label'/>").html(year)));
  
  			months.append(jQuery('<div class="row header month"/>')
  				.css("width", tools.getCellSize()*daysInMonth + "px")
  				.append(jQuery("<div class='label'/>").html(options.months[month])));
  
  			var dataPanel = jQuery("<div class='dataPanel'/>").css("width", range.length*tools.getCellSize()+"px");
  			dataPanel.append(years);
  			dataPanel.append(months);
  			dataPanel.append(days);
  			dataPanel.append(dow);
  						
  			jQuery.each(data, function(i, entry) {
  				if (i >= pageNum*options.itemsPerPage && i < (pageNum*options.itemsPerPage+options.itemsPerPage))
  				{
  					var dRow = jQuery('<div class="row">');
  					jQuery.each(range, function(j, day) {
  						var todayCls = (today - day == 0) ? ' today' : day.getDay() == 6 ? ' sa' : (day.getDay() == 0 ? ' sn' : '');
  						dRow.append(jQuery('<div class="row day' + todayCls + '" id="d'+i+'-'+ tools.genId(day.getTime())+'" />')
  						.html(day));
  					});
  					dataPanel.append(dRow);
  				}
  			});
  			
  			return dataPanel; 
  		};
  
  		createProgressBar = function(days, cls, desc) {
  			var cellWidth = tools.getCellSize();
  			var barMarg = tools.getProgressBarMargin() || 0;
  			var bar = jQuery("<div class='bar' />")
  					.addClass( cls )
  					.css({
  						width: ((cellWidth * ++days) - barMarg)
  					});
  			if (desc)
  			{
  				bar
  				  .mouseover(function(e){
  				  	var hint = jQuery("<div class='fn-gantt-hint' />").html(desc);
  				  	jQuery("body").append(hint);
  				  	hint.css('left', e.pageX);
  	      			hint.css('top', e.pageY);
  				  	hint.show();
  				  })
  				  .mouseout(function(){
  				  	jQuery(".fn-gantt-hint").remove();
  				  })
  				  .mousemove(function(e){
  	      			 jQuery('.fn-gantt-hint').css('left', e.pageX);
  	      			 jQuery('.fn-gantt-hint').css('top', e.pageY+15);
  	      		 });
        		}
  			return bar;
  		};
  
  		var fillHollydays = function() {
  			if (options.hollydays)
  			{
  				jQuery.each(data, function(i, entry) {
  					jQuery.each(options.hollydays, function(j, hollyday) {
  						jQuery('#d'+i+'-'+ tools.genId(tools.dateDeserialize(hollyday).getTime()))
  						.addClass("hollyday");
  					});
  				});
  			}
  		};
  
  		var fillData = function() {
  			jQuery.each(data, function(i, entry) {
  				if (i >= pageNum * options.itemsPerPage && i < (pageNum*options.itemsPerPage+options.itemsPerPage))
  				{
  					jQuery.each(entry.values, function(j, day) {
  						var _bar = createProgressBar(
  							Math.floor(((Date.parse(tools.dateDeserialize(day.to)) / 1000)
  									- (Date.parse(tools.dateDeserialize(day.from)) / 1000)) / 86400),
  								 day.customClass ? day.customClass : '',
  								 day.desc ? day.desc : ''
  								);
  						jQuery('#d'+i+'-'+ tools.genId(tools.dateDeserialize(day.from).getTime()))
  						.append(_bar
  						);
  				});
  				}
  			});
  		};
  
  		navigateTo = function(val) {
  			switch (val) {
  				case 'begin':
  					jQuery('.fn-gantt .dataPanel').animate({
  						'margin-left': '0px'
  					}, 'fast', function() {repositionLabel();});
  					break;
  				case 'end':
  					var mLeft = jQuery('.fn-gantt .dataPanel').width() - jQuery('.fn-gantt .rightPanel').width();
  					jQuery('.fn-gantt .dataPanel').animate({
  						'margin-left': '-' + mLeft + 'px'
  					}, 'fast', function() {repositionLabel();});
  					break;
  				default:
  					var max_left = (jQuery('.fn-gantt .dataPanel').width() - jQuery('.fn-gantt .rightPanel').width()) * -1;
  					var cur_marg = jQuery('.fn-gantt .dataPanel').css('margin-left').replace('px','');
  					var val = parseInt(cur_marg) + val;
  					if (val <= 0 && val >= max_left)
  						jQuery('.fn-gantt .dataPanel').animate({
  							'margin-left': val + 'px'
  						}, 'fast', repositionLabel);
  					break;
  			}
  		};
  
  		navigatePage = function(val) {
  			if ((pageNum+val) >= 0 && (pageNum+val) < Math.ceil(rowsNum/options.itemsPerPage))
  			{
  				pageNum += val;
  				hPosition = jQuery('.fn-gantt .dataPanel').css('margin-left').replace('px','');
  				jQuerythis.empty();
  				create(jQuerythis);
  			}
  		};
  
  		repositionLabel = function() {
  			jQuery('.fn-gantt .dataPanel').stop();
  			
  			var wrapper = { offset: jQuery('.fn-gantt .rightPanel').offset(),
  							width: jQuery('.fn-gantt .rightPanel').width(),
  							height: jQuery('.fn-gantt .rightPanel').height()};
  			
  			jQuery(".fn-gantt .rightPanel .year, .fn-gantt .rightPanel .month").each(function(i, obj) {
  				var objDim = { offset: jQuery(obj).offset(),
  							width: jQuery(obj).width(),
  							height: jQuery(obj).height()};
  				
  				if (objDim.offset.left + objDim.width > wrapper.offset.left
  				        && objDim.offset.left < wrapper.offset.left+wrapper.width)
  				    {
  				    	var viewArea = {
  				    		left: objDim.offset.left > wrapper.offset.left ? objDim.offset.left : wrapper.offset.left,
  				    		right: objDim.offset.left+objDim.width < wrapper.offset.left + wrapper.width ? objDim.offset.left+objDim.width : wrapper.offset.left + wrapper.width 
  				    	};
  				    	jQuery(obj).children(".label").css("float", "left");
  				    	var labelWidth = jQuery(obj).children(".label").width();
  				    	
  				    	var objMarg = objDim.offset.left < wrapper.offset.left ? wrapper.offset.left-objDim.offset.left : 0;
  						if (viewArea.right-viewArea.left > labelWidth)
  					    	jQuery(obj).children(".label")
  					    		.css("margin-left", objMarg + (viewArea.right - viewArea.left)/2 - labelWidth/2 + "px");
  				    }
  			});
  		};
  	};
  
  	var tools = new function() {
  		this.getMaxDate = function() {
  			var maxDate = null;
  			jQuery.each(data, function(i, entry) {
  				jQuery.each(entry.values, function(i, date) {
  					maxDate = maxDate < tools.dateDeserialize(date.to) ? tools.dateDeserialize(date.to) : maxDate;
  				});
  			});
  			maxDate.setDate(maxDate.getDate() + 2);
  			if (maxDate.getDate() <= 4)
  				maxDate.setDate(maxDate.getDate() + 4);
  			return maxDate;
  		};
  		this.getMinDate = function() {
  			var minDate = null;
  			jQuery.each(data, function(i, entry) {
  				jQuery.each(entry.values, function(i, date) {
  					minDate = minDate > tools.dateDeserialize(date.from) || minDate == null ? tools.dateDeserialize(date.from) : minDate;
  				});
  			});
  			minDate.setDate(minDate.getDate() - 2);
  			if (minDate.getDate() >= 27)
  				minDate.setDate(minDate.getDate() - 4);
  			return minDate;
  		};
  		this.parseDateRange = function(from, to) {
  			var current = new Date(from.getTime());
  			var end =  new Date(to.getTime());;
  			var ret = new Array();
  			var i = 0;
  			do {
  				ret[i++] = new Date(current.getTime());
  				current.setDate(current.getDate()+1);
  			} while (current <= to);
  			return ret;
  		};
  		this.dateDeserialize = function (dateStr) {
  			return eval('new' + dateStr.replace(/\//g, ' '));
  		};
  		this.genId = function (ticks) {
  			var t = Math.floor(ticks / 86400000);
  			return t * 86400000;
  		};
  		var _getCellSize = null;
  		this.getCellSize = function() {
  			if (!_getCellSize)
  			{
  				jQuery("body").append(
  					jQuery("<div style='display: none; position: absolute;' class='fn-gantt' id='measureCellWidth'><div class='row'></div></div>")
  				);
  				_getCellSize = jQuery('#measureCellWidth .row').height();
  				jQuery('#measureCellWidth').empty().remove();
  			}
  			return _getCellSize;
  		};
  		this.getPageHeight = function() {
  			return pageNum+1 == pageCount ? rowsOnLastPage*tools.getCellSize() : options.itemsPerPage*tools.getCellSize();
  		};
  		var _getProgressBarMargin = null;
  		this.getProgressBarMargin = function() {
  			if (!_getProgressBarMargin)
  			{
  				jQuery("body").append(
  					jQuery("<div style='display: none; position: absolute;' id='measureBarWidth' ><div class='fn-gantt'><div class='rightPanel'><div class='dataPanel'><div class='row day'><div class='bar' /></div></div></div></div></div>")
  				);
  				_getProgressBarMargin = parseInt(jQuery('#measureBarWidth .fn-gantt .rightPanel .day .bar').css("margin-left").replace("px",""));
  				_getProgressBarMargin += parseInt(jQuery('#measureBarWidth .fn-gantt .rightPanel .day .bar').css("margin-right").replace("px",""));
  				jQuery('#measureBarWidth').empty().remove();
  			}
  			return _getProgressBarMargin;
  		};
  	};
  	jQuery(this).empty();
  	create(jQuery(this));
  };
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