SimpleColumnView.js

define([
"./ViewBase",
"dijit/_TemplatedMixin",
"./_ScrollBarBase",
"dojo/text!./templates/ColumnView.html",
"dojo/_base/declare",
"dojo/_base/event",
"dojo/_base/lang",
"dojo/_base/array",
"dojo/_base/sniff",
"dojo/_base/fx",
"dojo/_base/html",
"dojo/on",
"dojo/dom",
"dojo/dom-class",
"dojo/dom-style",
"dojo/dom-geometry",
"dojo/dom-construct",
"dojo/mouse",
"dojo/query",
"dojox/html/metrics"],

function(
	ViewBase,
	_TemplatedMixin,
	_ScrollBarBase,
	template,
	declare,
	event,
	lang,
	arr,
	has,
	fx,
	html,
	on,
	dom,
	domClass,
	domStyle,
	domGeometry,
	domConstruct,
	mouse,
	query,
	metrics){

	/*=====
	var __ColumnClickEventArgs = {
		// summary:
		//		A column click event.
		// index: Integer
		//		The column index.
		// date: Date
		//		The date displayed by the column.
		// triggerEvent: Event
		//		The origin event.
	};
	=====*/

	return declare("dojox.calendar.SimpleColumnView", [ViewBase, _TemplatedMixin], {

		// summary:
		//		The simple column view is displaying a day per column. Each cell of a column is a time slot.

		baseClass: "dojoxCalendarColumnView",

		templateString: template,

		// viewKind: String
		//		Type of the view. Used by the calendar widget to determine how to configure the view.
		//		This view kind is "columns".
		viewKind: "columns",

		// scroll container is the focusable item to enable scrolling using up and down arrows
		_setTabIndexAttr: "domNode",

		// renderData: Object
		//		The render data is the object that contains all the properties needed to render the component.
		renderData: null,

		// startDate: Date
		//		The start date of the time interval displayed.
		//		If not set at initialization time, will be set to current day.
		startDate: null,

		// columnCount: Integer
		//		The number of column to display (from the startDate).
		columnCount: 7,

		// subcolumns: String[]
		//		Array of sub columns values.
		subColumns: null,

		// minHours: Integer
		//		The minimum hour to be displayed. It must be in the [0,23] interval and must be lower than the maxHours.
		minHours: 8,

		// maxHours: Integer
		//		The maximum hour to be displayed. It must be in the [1,36] interval and must be greater than the minHours.
		maxHours: 18,

		// hourSize: Integer
		//		The desired size in pixels of an hour on the screen.
		//		Note that the effective size may be different as the time slot size must be an integer.
		hourSize: 100,

		// timeSlotDuration: Integer
		//		Duration of the time slot in minutes. Must be a divisor of 60.
		timeSlotDuration: 15,

		// rowHeaderGridSlotDuration: Integer
		//		Duration of the time slot in minutes in the row header. Must be a divisor of 60 and a multiple/divisor of timeSlotDuration.
		rowHeaderGridSlotDuration: 60,

		// rowHeaderLabelSlotDuration: Integer
		//		Duration of the time slot in minutes in the row header labels. Must be a divisor of 60 and a multiple/divisor of timeSlotDuration.
		rowHeaderLabelSlotDuration: 60,

		// rowHeaderLabelOffset: Integer
		//		Offset of the row label from the top of the row header cell in pixels.
		rowHeaderLabelOffset: 2,

		// rowHeaderFirstLabelOffset: Integer
		//		Offset of the first row label from the top of the first row header cell in pixels.
		rowHeaderFirstLabelOffset: 2,

		// verticalRenderer: Class
		//		The class use to create vertical renderers.
		verticalRenderer: null,

		// verticalDecorationRenderer: Class
		//		The class use to create decoration renderers.
		verticalDecorationRenderer: null,

		// minColumnWidth: Integer
		//		The minimum column width. If the number of columns and sub columns displayed makes the
		//		width of a column greater than this property, a horizontal scroll bar is displayed.
		//		If value <= 0, this constraint is ignored and the columns are using the available space.
		minColumnWidth: -1,

		// percentOverlap: Integer
		//		The percentage of the renderer width used to superimpose one item renderer on another
		//		when two events are overlapping.
		percentOverlap: 70,

		// horizontalGap: Integer
		//		The number of pixels between two item renderers that are overlapping each other if the percentOverlap property is 0.
		horizontalGap: 4,

		_showSecondarySheet: false,

		_columnHeaderHandlers: null,

		constructor: function(){
			this.invalidatingProperties = ["columnCount", "startDate", "minHours", "maxHours", "hourSize", "verticalRenderer", "verticalDecorationRenderer",
				"rowHeaderTimePattern", "columnHeaderDatePattern", "timeSlotDuration", "rowHeaderGridSlotDuration", "rowHeaderLabelSlotDuration",
				"rowHeaderLabelOffset", "rowHeaderFirstLabelOffset","percentOverlap", "horizontalGap", "scrollBarRTLPosition","itemToRendererKindFunc",
				"layoutPriorityFunction", "formatItemTimeFunc", "textDir", "items", "subColumns", "minColumnWidth"];
			this._columnHeaderHandlers = [];
		},

		destroy: function(preserveDom){
			this._cleanupColumnHeader();
			if(this.scrollBar){
				this.scrollBar.destroy(preserveDom);
			}
			this.inherited(arguments);
		},

		_scrollBar_onScroll: function(value){
			this._setScrollPosition(value);
		},

		_hscrollBar_onScroll: function(value){
			this._setHScrollPosition(value);
		},

		buildRendering: function(){
			this.inherited(arguments);
			if(this.vScrollBar){
				this.scrollBar = new _ScrollBarBase(
					{content: this.vScrollBarContent},
					this.vScrollBar);

				this.scrollBar.on("scroll", lang.hitch(this, this._scrollBar_onScroll));
			}

			if(this.hScrollBar){
				this.hScrollBarW = new _ScrollBarBase(
					{content: this.hScrollBarContent, direction: "horizontal", value: 0},
					this.hScrollBar);

				this.hScrollBarW.on("scroll", lang.hitch(this, this._hscrollBar_onScroll));

				this._hScrollNodes = [this.columnHeaderTable, this.subColumnHeaderTable, this.gridTable, this.itemContainerTable];
			}

			this._viewHandles.push(
					on(this.scrollContainer, mouse.wheel,
						dojo.hitch(this, this._mouseWheelScrollHander)));


		},

		postscript: function(){
			this.inherited(arguments);
			this._initialized = true;
			if(!this.invalidRendering){
				this.refreshRendering();
			}
		},

		_setVerticalRendererAttr: function(value){
			this._destroyRenderersByKind("vertical");
			this._set("verticalRenderer", value);
		},

		_createRenderData: function(){

			var rd = {};

			rd.minHours = this.get("minHours");
			rd.maxHours = this.get("maxHours");
			rd.hourSize = this.get("hourSize");
			rd.hourCount = rd.maxHours - rd.minHours;
			rd.slotDuration = this.get("timeSlotDuration"); // must be consistent with previous statement
			rd.rowHeaderGridSlotDuration = this.get("rowHeaderGridSlotDuration");
			rd.slotSize = Math.ceil(rd.hourSize / (60 / rd.slotDuration));
			rd.hourSize = rd.slotSize * (60 / rd.slotDuration);
			rd.sheetHeight = rd.hourSize * rd.hourCount;

			if(!this._rowHeaderWidth){
				this._rowHeaderWidth = domGeometry.getMarginBox(this.rowHeader).w;
			}
			rd.rowHeaderWidth = this._rowHeaderWidth;

			var sbMetrics = metrics.getScrollbar();
			rd.scrollbarWidth = sbMetrics.w + 1;
			rd.scrollbarHeight = sbMetrics.h + 1;

			rd.dateLocaleModule = this.dateLocaleModule;
			rd.dateClassObj = this.dateClassObj;
			rd.dateModule = this.dateModule; // arithmetics on Dates

			rd.dates = [];

			rd.columnCount = this.get("columnCount");
			rd.subColumns = this.get("subColumns");
			rd.subColumnCount =  rd.subColumns ? rd.subColumns.length : 1;

			rd.hScrollPaneWidth = domGeometry.getMarginBox(this.grid).w;
			rd.minSheetWidth = this.minColumnWidth < 0 ? -1 : this.minColumnWidth * rd.subColumnCount * rd.columnCount;
			rd.hScrollBarEnabled = this.minColumnWidth > 0 && rd.hScrollPaneWidth < rd.minSheetWidth;

			var d = this.get("startDate");

			if (d == null){
				d = new rd.dateClassObj();
			}

			d = this.floorToDay(d, false, rd);

			this.startDate = d;

			for(var col = 0; col < rd.columnCount ; col++){
				rd.dates.push(d);
				d = this.addAndFloor(d, "day", 1);
			}

			rd.startTime = new rd.dateClassObj(rd.dates[0]);
			rd.startTime.setHours(rd.minHours);
			rd.endTime = new rd.dateClassObj(rd.dates[rd.columnCount-1]);
			rd.endTime.setHours(rd.maxHours);

			if(this.displayedItemsInvalidated && !this._isEditing){
				 // while editing in no live layout we must not to recompute items (duplicate renderers)
				rd.items = this.storeManager._computeVisibleItems(rd);

			}else if (this.renderData){
				rd.items = this.renderData.items;
			}

			if(this.displayedDecorationItemsInvalidated){
				 // while editing in no live layout we must not to recompute items (duplicate renderers)
				rd.decorationItems = this.decorationStoreManager._computeVisibleItems(rd);

			}else if (this.renderData){
				rd.decorationItems = this.renderData.decorationItems;
			}

			return rd;
		},

		_validateProperties: function() {

			this.inherited(arguments);

			var v = this.minHours;
			if(v < 0 || v>23 || isNaN(v)){
				this.minHours = 0;
			}
			v = this.maxHours;
			if (v < 1 || v>36 || isNaN(v)){
				this.minHours = 36;
			}

			if(this.minHours > this.maxHours){
				var t = this.maxHours;
				this.maxHours = this.minHours;
				this.minHours = t;
			}
			if (this.maxHours - this.minHours < 1){
				this.minHours = 0;
				this.maxHours = 24;
			}
			if (this.columnCount<1 || isNaN(this.columnCount)){
				this.columnCount = 1;
			}

			v = this.percentOverlap;
			if(v < 0 ||v > 100 || isNaN(v)){
				this.percentOverlap = 70;
			}
			if(this.hourSize<5 || isNaN(this.hourSize)){
				this.hourSize = 10;
			}
			v = this.timeSlotDuration;
            if (v < 1 || v > 60 || isNaN(v)) {
                this.timeSlotDuration = 15;
            }
		},

		_setStartDateAttr: function(value){
			this.displayedItemsInvalidated = true;
			this._set("startDate", value);
		},

		_setColumnCountAttr: function(value){
			this.displayedItemsInvalidated = true;
			this._set("columnCount", value);
		},

		__fixEvt:function(e){
			// tags:
			//		private
			e.sheet = "primary";
			e.source = this;
			return e;
		},

		//////////////////////////////////////////
		//
		// Formatting functions
		//
		//////////////////////////////////////////

		// rowHeaderTimePattern: String
		//		Custom date/time pattern for the row header labels to override default one coming from the CLDR.
		//		See dojo/date/locale documentation for format string.
		rowHeaderTimePattern: null,

		_formatRowHeaderLabel: function(/*Date*/d){
			// summary:
			//		Computes the row header label for the specified time of day.
			//		By default a formatter is used, optionally the <code>rowHeaderTimePattern</code> property can be used to set a custom time pattern to the formatter.
			// d: Date
			//		The date to format
			// tags:
			//		protected

			return this.renderData.dateLocaleModule.format(d, {
				selector: "time",
				timePattern: this.rowHeaderTimePattern
			});
		},

		// columnHeaderDatePattern: String
		//		Custom date/time pattern for column header labels to override default one coming from the CLDR.
		//		See dojo/date/locale documentation for format string.
		columnHeaderDatePattern: null,

		_formatColumnHeaderLabel: function(/*Date*/d){
			// summary:
			//		Computes the column header label for the specified date.
			//		By default a formatter is used, optionally the <code>columnHeaderDatePattern</code> property can be used to set a custom date pattern to the formatter.
			// d: Date
			//		The date to format
			// tags:
			//		protected

			return this.renderData.dateLocaleModule.format(d, {
				selector: "date",
				datePattern: this.columnHeaderDatePattern,
				formatLength: "medium"
			});
		},

		//////////////////////////////////////////
		//
		// Time of day management
		//
		//////////////////////////////////////////

		// scrollBarRTLPosition: String
		//		Position of the scroll bar in right-to-left display.
		//		Valid values are "left" and "right", default value is "left".
		scrollBarRTLPosition: "left",

		_getStartTimeOfDay: function(){
			// summary:
			//		Returns the visible first time of day.
			// tags:
			//		protected
			// returns: Object

			var v = (this.get("maxHours") - this.get("minHours")) *
				this._getScrollPosition() / this.renderData.sheetHeight;

			return {
				hours: this.renderData.minHours + Math.floor(v),
				minutes: (v - Math.floor(v)) * 60
			};
		},

		_getEndTimeOfDay: function(){
			// summary:
			//		Returns the visible last time of day.
			// tags:
			//		protected
			// returns: Integer[]

			var v = (this.get("maxHours") - this.get("minHours")) *
				(this._getScrollPosition() + this.scrollContainer.offsetHeight) / this.renderData.sheetHeight;

			return {
				hours: this.renderData.minHours + Math.floor(v),
				minutes: (v - Math.floor(v)) * 60
			};
		},

		// startTimeOfDay: Object
		//		First time (hour/minute) of day displayed, if reachable.
		//		An object containing "hours" and "minutes" properties.
		startTimeOfDay: 0,

		_setStartTimeOfDayAttr: function(value){
			if(this.renderData){
				this._setStartTimeOfDay(value.hours, value.minutes, value.duration, value.easing);
			}else{
				this._startTimeOfDayInvalidated = true;
			}
			this._set("startTimeOfDay", value);

		},

		_getStartTimeOfDayAttr: function(){
			if(this.renderData){
				return this._getStartTimeOfDay();
			}else{
				return this._get("startTimeOfDay");
			}
		},

		_setStartTimeOfDay: function(hour, minutes, maxDuration, easing){
			// summary:
			//		Scrolls the view to show the specified first time of day.
			// hour: Integer
			//		The hour of the start time of day.
			// minutes: Integer
			//		The minutes part of the start time of day.
			// maxDuration: Integer
			//		The max duration of the scroll animation.
			// tags:
			//		protected

			var rd = this.renderData;

			hour = hour || rd.minHours;
			minutes = minutes || 0;
			maxDuration = maxDuration || 0;

			if (minutes < 0){
				minutes = 0;
			}else if (minutes > 59){
				minutes = 59;
			}

			if (hour < 0){
				hour = 0;
			}else if (hour > rd.maxHours){
				hour = rd.maxHours;
			}

			var timeInMinutes = hour * 60 + minutes;

			var minH = rd.minHours*60;
			var maxH = rd.maxHours*60;

			if (timeInMinutes < minH){
				timeInMinutes = minH;
			}else if(timeInMinutes > maxH){
				timeInMinutes = maxH;
			}

			var pos = (timeInMinutes - minH) * rd.sheetHeight / (maxH - minH);
			pos = Math.min(rd.sheetHeight - this.scrollContainer.offsetHeight, pos);

			this._scrollToPosition(pos, maxDuration, easing);
		},

		_scrollToPosition: function(position, maxDuration, easing){
			// summary:
			//		Scrolls the view to show the specified first time of day.
			// position: Integer
			//		The position in pixels.
			// maxDuration: Integer
			//		The max duration of the scroll animation.
			// tags:
			//		protected

			if (maxDuration) {

				if(this._scrollAnimation){
					this._scrollAnimation.stop();
				}

				var scrollPos = this._getScrollPosition();

				var duration = Math.abs(((position - scrollPos) * maxDuration) / this.renderData.sheetHeight);

				this._scrollAnimation = new fx.Animation({
					curve: [scrollPos, position],
					duration: duration,
					easing: easing,
					onAnimate: lang.hitch(this, function(position) {
						this._setScrollImpl(position);
					})
				});

				this._scrollAnimation.play();

			}else{
				this._setScrollImpl(position);
			}
		},

		_setScrollImpl: function(v){
			this._setScrollPosition(v);
			if(this.scrollBar){
				this.scrollBar.set("value", v);
			}
		},

		ensureVisibility: function(start, end, visibilityTarget, margin, duration){

			// summary:
			//		Scrolls the view if the [start, end] time range is not visible or only partially visible.
			// start: Date
			//		Start time of the range of interest.
			// end: Date
			//		End time of the range of interest.
			// margin: Integer
			//		Margin in minutes around the time range.
			// visibilityTarget: String
			//		The end(s) of the time range to make visible.
			//		Valid values are: "start", "end", "both".
			// duration: Number
			//		Optional, the maximum duration of the scroll animation.

			margin = margin == undefined ? this.renderData.slotDuration : margin;

			if(this.scrollable && this.autoScroll){

				var s = start.getHours() * 60 + start.getMinutes() - margin;
				var e = end.getHours() * 60 + end.getMinutes() + margin;

				var vs = this._getStartTimeOfDay();
				var ve = this._getEndTimeOfDay();

				var viewStart = vs.hours * 60 + vs.minutes;
				var viewEnd = ve.hours * 60 + ve.minutes;

				var visible = false;
				var target = null;

				switch(visibilityTarget){
					case "start":
						visible = s >= viewStart && s <= viewEnd;
						target = s ;
						break;
					case "end":
						visible = e >= viewStart && e <= viewEnd;
						target = e - (viewEnd - viewStart);
						break;
					case "both":
						visible = s >= viewStart && e <= viewEnd;
						target = s;
						break;
				}

				if(!visible){
					this._setStartTimeOfDay(Math.floor(target/60), target%60, duration);
				}
			}
		},

		scrollView: function(dir){
			// summary:
			//		Scrolls the view to the specified direction of one time slot duration.
			// dir: Integer
			//		Direction of the scroll. Valid values are -1 and 1.
			//
			var t = this._getStartTimeOfDay();
			t = t.hours*60 + t.minutes + (dir * this.timeSlotDuration);
			this._setStartTimeOfDay(Math.floor(t/60), t%60);
		},

		scrollViewHorizontal: function(dir){
			// summary:
			//		Scrolls the view horizontally to the specified direction of one column or sub column (if set).
			// dir: Integer
			//		Direction of the scroll. Valid values are -1 and 1.
			//
			this._setHScrollPosition(this._getHScrollPosition() + (dir * this.minColumnWidth));
			if(this.hScrollBarW){
				this.hScrollBarW.set("value", this._getHScrollPosition());
			}
		},

		_hScrollNodes: null,

		_setHScrollPositionImpl: function(pos, useDom, cssProp){
			var elts = [this.columnHeaderTable, this.subColumnHeaderTable, this.gridTable, this.itemContainerTable];
			var css = useDom ? null : "translateX(-"+pos+"px)";
			arr.forEach(elts, function(elt){
				if(useDom){
					elt.scrollLeft = pos;
					domStyle.set(elt, "left", (-pos) + "px");
				}else{
					domStyle.set(elt, cssProp, css);
				}
			}, this);
		},

		_mouseWheelScrollHander: function(e){
			// summary:
			//		Mouse wheel handler.
			// tags:
			//		protected
			if(this.renderData.hScrollBarEnabled && e.altKey){
				this.scrollViewHorizontal(e.wheelDelta > 0 ? -1 : 1);
			}else{
				this.scrollView(e.wheelDelta > 0 ? -1 : 1);
			}
			event.stop(e);
		},

		//////////////////////////////////////////
		//
		// HTML structure management
		//
		//////////////////////////////////////////

		refreshRendering: function(){
			if(!this._initialized){
				return;
			}

			this._validateProperties();

			var oldRd = this.renderData;
			var rd = this._createRenderData();
			this.renderData = rd;
			this._createRendering(rd, oldRd);
			this._layoutDecorationRenderers(rd);
			this._layoutRenderers(rd);
		},

		_createRendering: function(/*Object*/renderData, /*Object*/oldRenderData){
			// tags:
			//		private
			domStyle.set(this.sheetContainer, "height", renderData.sheetHeight + "px");
			// padding for the scroll bar.
			this._configureVisibleParts(renderData);
			this._configureScrollBar(renderData);
			this._buildColumnHeader(renderData, oldRenderData);
			this._buildSubColumnHeader(renderData, oldRenderData);
			this._buildRowHeader(renderData, oldRenderData);
			this._buildGrid(renderData, oldRenderData);
			this._buildItemContainer(renderData, oldRenderData);
			this._layoutTimeIndicator(renderData);
			this._commitProperties(renderData);
		},

		_configureVisibleParts: function(renderData){

			if(this.secondarySheetNode){
				domStyle.set(this.secondarySheetNode, "display", this._showSecondarySheet ? "block" : "none");
			}

			domClass[this.subColumns == null?"remove":"add"](this.domNode, "subColumns");
			domClass[this._showSecondarySheet?"add":"remove"](this.domNode, "secondarySheet");
		},

		_commitProperties: function(renderData){
			if(this._startTimeOfDayInvalidated){
				this._startTimeOfDayInvalidated = false;
				var v = this.startTimeOfDay;
				if(v != null){
					this._setStartTimeOfDay(v.hours, v.minutes == undefined ? 0 : v.minutes); // initial position, no animation
				}
			}
		},

		_configureScrollBar: function(renderData){
			// summary:
			//		Sets the scroll bar size and position.
			// renderData: Object
			//		The render data.
			// tags:
			//		protected

			if(has("ie") && this.scrollBar){
				domStyle.set(this.vScrollBar, "width", (renderData.scrollbarWidth + 1) + "px");
			}

			var atRight = this.isLeftToRight() ? true : this.scrollBarRTLPosition == "right";
			var rPos = atRight ? "right" : "left";
			var lPos = atRight ? "left" : "right";

			if(this.scrollBar){
				this.scrollBar.set("maximum", renderData.sheetHeight);
				domStyle.set(this.vScrollBar, rPos, 0);
				domStyle.set(this.vScrollBar, atRight? "left" : "right", "auto");
				domStyle.set(this.vScrollBar, "bottom", renderData.hScrollBarEnabled? renderData.scrollbarHeight + "px" : "0");
			}
			domStyle.set(this.scrollContainer, rPos, renderData.scrollbarWidth + "px");
			domStyle.set(this.scrollContainer, lPos, "0");
			domStyle.set(this.header, rPos, renderData.scrollbarWidth + "px");
			domStyle.set(this.header, lPos, "0");
			domStyle.set(this.subHeader, rPos, renderData.scrollbarWidth + "px");
			domStyle.set(this.subHeader, lPos, "0");
			if(this.buttonContainer && this.owner != null && this.owner.currentView == this){
				domStyle.set(this.buttonContainer, rPos, renderData.scrollbarWidth + "px");
				domStyle.set(this.buttonContainer, lPos, "0");
			}

			if(this.hScrollBar){

				arr.forEach(this._hScrollNodes, function(elt){
					domClass[renderData.hScrollBarEnabled ? "add" : "remove"](elt.parentNode, "dojoxCalendarHorizontalScroll");
				}, this);

				if(!renderData.hScrollBarEnabled){
					this._setHScrollPosition(0);
					this.hScrollBarW.set("value", 0);
				}

				domStyle.set(this.hScrollBar, {
					"display": renderData.hScrollBarEnabled ? "block" : "none",
					"height": renderData.scrollbarHeight + "px",
					"left": (atRight ? renderData.rowHeaderWidth : renderData.scrollbarWidth) + "px",
					"right": (atRight ? renderData.scrollbarWidth : renderData.rowHeaderWidth) + "px"
				});

				domStyle.set(this.scrollContainer, "bottom", renderData.hScrollBarEnabled ? (renderData.scrollbarHeight + 1) + "px" : "0");
				this._configureHScrollDomNodes(renderData.hScrollBarEnabled ? renderData.minSheetWidth + "px" : "100%");

				this.hScrollBarW.set("maximum", renderData.minSheetWidth);
				this.hScrollBarW.set("containerSize", renderData.hScrollPaneWidth);

			}
		},

		_configureHScrollDomNodes: function(styleWidth){
			arr.forEach(this._hScrollNodes, function(elt){
				domStyle.set(elt, "width", styleWidth);
			}, this);
		},

		resize: function(e){
			this._resizeHandler(e);
		},

		_resizeHandler: function(e, apply){
			// summary:
			//		Refreshes the scroll bars after a resize of the widget.
			// e: Event
			//		The resize event (optional)
			// apply: Boolean
			//		Whether apply the changes or wait for 100 ms
			// tags:
			//		private

			var rd = this.renderData;

			if(rd == null){
				return;
			}


			if(apply){

				var hScrollPaneWidth = domGeometry.getMarginBox(this.grid).w;

				if(rd.hScrollPaneWidth != hScrollPaneWidth){
					// refresh values
					rd.hScrollPaneWidth = hScrollPaneWidth;
					rd.minSheetWidth = this.minColumnWidth < 0 ? -1 : this.minColumnWidth * rd.subColumnCount * rd.columnCount;
					rd.hScrollBarEnabled = this.minColumnWidth > 0 && domGeometry.getMarginBox(this.grid).w < rd.minSheetWidth;
				}

				this._configureScrollBar(rd);

			}else{
				if(this._resizeTimer != undefined){
					clearTimeout(this._resizeTimer);
				}
				this._resizeTimer = setTimeout(lang.hitch(this, function(){
					this._resizeHandler(e, true);
				}), 100);
			}

		},

		_columnHeaderClick: function(e){
			// tags:
			//		private

			event.stop(e);
			var index = query("td", this.columnHeaderTable).indexOf(e.currentTarget);
			this._onColumnHeaderClick({
				index: index,
				date: this.renderData.dates[index],
				triggerEvent: e
			});
		},

		_buildColumnHeader: function(renderData, oldRenderData){
			// summary:
			//		Creates incrementally the HTML structure of the column header and configures its content.
			//
			// renderData:
			//		The render data to display.
			//
			// oldRenderData:
			//		The previously render data displayed, if any.
			// tags:
			//		private

			var table = this.columnHeaderTable;

			if (!table){
				return;
			}

			var count = renderData.columnCount - (oldRenderData ? oldRenderData.columnCount : 0);

			if(has("ie") == 8){
				// workaround Internet Explorer 8 bug.
				// if on the table, width: 100% and table-layout: fixed are set
				// and columns are removed, width of remaining columns is not
				// recomputed: must rebuild all.
				if(this._colTableSave == null){
					this._colTableSave = lang.clone(table);
				}else if(count < 0){
					this._cleanupColumnHeader();
					this.columnHeader.removeChild(table);
					domConstruct.destroy(table);
					table = lang.clone(this._colTableSave);
					this.columnHeaderTable = table;
					this.columnHeader.appendChild(table);
					count = renderData.columnCount;
				}

			} // else incremental dom add/remove for real browsers.

			var tbodies = query("tbody", table);

			var trs = query("tr", table);
			var tbody, tr, td;

			if (tbodies.length == 1){
				tbody = tbodies[0];
			}else{
				tbody = html.create("tbody", null, table);
			}

			if (trs.length == 1){
				tr = trs[0];
			}else{
				tr = domConstruct.create("tr", null, tbody);
			}

			// Build HTML structure (incremental)
			if(count > 0){ // creation
				for(var i=0; i < count; i++){

					td = domConstruct.create("td", null, tr);

					var h = [];
					h.push(on(td, "click", lang.hitch(this, this._columnHeaderClick)));

					if(has("touch-events")){
						h.push(on(td, "touchstart", function(e){
							event.stop(e);
							domClass.add(e.currentTarget, "Active");
						}));

						h.push(on(td, "touchend", function(e){
							event.stop(e);
							domClass.remove(e.currentTarget, "Active");
						}));
					}else{
						h.push(on(td, "mousedown", function(e){
							event.stop(e);
							domClass.add(e.currentTarget, "Active");
						}));

						h.push(on(td, "mouseup", function(e){
							event.stop(e);
							domClass.remove(e.currentTarget, "Active");
						}));

						h.push(on(td, "mouseover", function(e){
							event.stop(e);
							domClass.add(e.currentTarget, "Hover");
						}));

						h.push(on(td, "mouseout", function(e){
							event.stop(e);
							domClass.remove(e.currentTarget, "Hover");
						}));

					}

					this._columnHeaderHandlers.push(h);

				}
			}else{ // deletion
				count = -count;
				for(var i=0; i < count; i++){
					td = tr.lastChild;
					tr.removeChild(td);
					domConstruct.destroy(td);
					var list = this._columnHeaderHandlers.pop();
					while(list.length>0){
						list.pop().remove();
					}
				}
			}

			// fill & configure
			query("td", table).forEach(function(td, i){
				td.className = "";
				if(i == 0){
					domClass.add(td, "first-child");
				}else if(i == this.renderData.columnCount-1){
					domClass.add(td, "last-child");
				}
				var d = renderData.dates[i];
				this._setText(td, this._formatColumnHeaderLabel(d));
				this.styleColumnHeaderCell(td, d, renderData);
			}, this);

			if(this.yearColumnHeaderContent){
				var d = renderData.dates[0];
					this._setText(this.yearColumnHeaderContent, renderData.dateLocaleModule.format(d,
						{selector: "date", datePattern:"yyyy"}));
			}
		},

		_cleanupColumnHeader: function(){
			while(this._columnHeaderHandlers.length > 0){
				var list = this._columnHeaderHandlers.pop();
				while(list.length > 0){
					list.pop().remove();
				}
			}
		},

		styleColumnHeaderCell: function(node, date, renderData){
			// summary:
			//		Styles the CSS classes to the node that displays a column header cell.
			//		By default this method is setting:
			//		- "dojoxCalendarToday" class name if the date displayed is the current date,
			//		- "dojoxCalendarWeekend" if the date represents a weekend,
			//		- the CSS class corresponding of the displayed day of week ("Sun", "Mon" and so on).
			// node: Node
			//		The DOM node that displays the column in the grid.
			// date: Date
			//		The date displayed by this column
			// renderData: Object
			//		The render data.
			// tags:
			//		protected

			domClass.add(node, this._cssDays[date.getDay()]);

			if(this.isToday(date)){
				domClass.add(node, "dojoxCalendarToday");
			} else if(this.isWeekEnd(date)){
				domClass.add(node, "dojoxCalendarWeekend");
			}
		},

		_buildSubColumnHeader: function(renderData, oldRenderData){
			// summary:
			//		Creates incrementally the HTML structure of the column header and configures its content.
			//
			// renderData:
			//		The render data to display.
			//
			// oldRenderData:
			//		The previously render data displayed, if any.
			// tags:
			//		private

			var table = this.subColumnHeaderTable;

			if (!table || this.subColumns == null){
				return;
			}

			var count = renderData.columnCount - query("td", table).length;

			if(has("ie") == 8){
				// workaround Internet Explorer 8 bug.
				// if on the table, width: 100% and table-layout: fixed are set
				// and columns are removed, width of remaining columns is not
				// recomputed: must rebuild all.
				if(this._colSubTableSave == null){
					this._colSubTableSave = lang.clone(table);
				}else if(count < 0){
					this.subColumnHeader.removeChild(table);
					domConstruct.destroy(table);
					table = lang.clone(this._colSubTableSave);
					this.subColumnHeaderTable = table;
					this.subColumnHeader.appendChild(table);
					count = renderData.columnCount;
				}

			} // else incremental dom add/remove for real browsers.

			var tbodies = query(">tbody", table);

			var tbody, tr, td;

			if (tbodies.length == 1){
				tbody = tbodies[0];
			}else{
				tbody = html.create("tbody", null, table);
			}

			var trs = query(">tr", tbody);
			if (trs.length == 1){
				tr = trs[0];
			}else{
				tr = domConstruct.create("tr", null, tbody);
			}

			var subCount = renderData.subColumnCount;

			// Build HTML structure (incremental)
			if(count > 0){ // creation
				for(var i=0; i < count; i++){
					td = domConstruct.create("td", null, tr);
					domConstruct.create("div", {"className": "dojoxCalendarSubHeaderContainer"}, td);
				}
			}else{ // deletion
				count = -count;
				for(var i=0; i < count; i++){
					td = tr.lastChild;
					tr.removeChild(td);
					domConstruct.destroy(td);
				}
			}

			// fill & configure
			query("td", table).forEach(function(td, i){
				td.className = "";
				if(i == 0){
					domClass.add(td, "first-child");
				}else if(i == this.renderData.columnCount-1){
					domClass.add(td, "last-child");
				}

				query(".dojoxCalendarSubHeaderContainer", td).forEach(function(div, i){

					var count = query(".dojoxCalendarSubHeaderContainer", div).length - subCount;
					if(count != 0){
						var len = div.childNodes.length;
						for(var i=0; i<len; i++){
							div.removeChild(div.lastChild);
						}
						for(var j=0; j<subCount; j++){
							domConstruct.create("div", {"className": "dojoxCalendarSubHeaderCell dojoxCalendarSubHeaderLabel"}, div);
						}
					}

					var colW = (100/subCount) + "%";
					query(".dojoxCalendarSubHeaderCell", div).forEach(function(div, i){
						div.className = "dojoxCalendarSubHeaderCell dojoxCalendarSubHeaderLabel";
						var col = subCount == 1 ? i : Math.floor(i / subCount);
						subColIdx = subCount == 1 ? 0 : i - col * subCount;
						domStyle.set(div, {width: colW, left: ((subColIdx * 100)/subCount)+"%"});
						domClass[subColIdx<subCount-1 && subCount !== 1?"add":"remove"](div, "subColumn");
						domClass.add(div, this.subColumns[subColIdx]);
						this._setText(div, this.subColumnLabelFunc(this.subColumns[subColIdx]));
					}, this);

				}, this);

				var d = renderData.dates[i];

				this.styleSubColumnHeaderCell(td, d, renderData);

			}, this);

		},


		subColumnLabelFunc: function(value){
			// summary:
			//	Computes the label for a sub column from the subColumns property.
			//	By default, return the value.
			return value;
		},

		styleSubColumnHeaderCell: function(node, date, renderData){
			// summary:
			//		Styles the CSS classes to the node that displays a sub column header cell.
			//		By default this method is not setting anythin:
			// node: Node
			//		The DOM node that displays the column in the grid.
			// subColumnIndex: Integer
			//		The cub column index.
			// renderData: Object
			//		The render data.
			// tags:
			//		protected
			domClass.add(node, this._cssDays[date.getDay()]);

			if(this.isToday(date)){
				domClass.add(node, "dojoxCalendarToday");
			} else if(this.isWeekEnd(date)){
				domClass.add(node, "dojoxCalendarWeekend");
			}
		},

        _addMinutesClasses: function(node, minutes){
            switch(minutes){
                case 0:
                    domClass.add(node, "hour");
                    break;
                case 30:
                    domClass.add(node, "halfhour");
                    break;
                case 15:
                case 45:
                    domClass.add(node, "quarterhour");
                    break;
            }
        },

		_buildRowHeader: function(renderData, oldRenderData){

			// summary:
			//		Creates incrementally the HTML structure of the row header and configures its content.
			//
			// renderData:
			//		The render data to display.
			//
			// oldRenderData:
			//		The previously render data displayed, if any.
			// tags:
			//		private


			var rowHeaderTable = this.rowHeaderTable;

			if (!rowHeaderTable){
				return;
			}

			if(this._rowHeaderLabelContainer == null){
				this._rowHeaderLabelContainer = domConstruct.create("div", {"class": "dojoxCalendarRowHeaderLabelContainer"}, this.rowHeader);
			}


			domStyle.set(rowHeaderTable, "height", renderData.sheetHeight + "px");

			var tbodies = query("tbody", rowHeaderTable);
			var tbody, tr, td;

			if (tbodies.length == 1){
				tbody = tbodies[0];
			}else{
				tbody = domConstruct.create("tbody", null, rowHeaderTable);
			}

			var nbRows = Math.floor(60 / renderData.rowHeaderGridSlotDuration) * renderData.hourCount;

			var count = nbRows -
				(oldRenderData ? Math.floor(60 / oldRenderData.rowHeaderGridSlotDuration) * oldRenderData.hourCount : 0);

			// Build HTML structure
			if(count>0){ // creation
				for(var i=0; i < count; i++){
					tr = domConstruct.create("tr", null, tbody);
					td = domConstruct.create("td", null, tr);
				}
			}else{
				count = -count;
				// deletion of existing nodes
				for(var i=0; i < count; i++){
					tbody.removeChild(tbody.lastChild);
				}
			}

			// fill labels


			var rd = this.renderData;
			var size = Math.ceil(renderData.hourSize / (60 / renderData.rowHeaderGridSlotDuration));
			var d = this.newDate(new Date());
			d.setFullYear(2000,0,1);
			d.setHours(0,0,0,0);

			query("tr", rowHeaderTable).forEach(function(tr, i){
				var td = query("td", tr)[0];
				td.className = "";

				domStyle.set(tr, "height", (has("ie") == 7)?size-2*(60 / renderData.rowHeaderGridSlotDuration):size + "px");

				var h = renderData.minHours + (i * this.renderData.rowHeaderGridSlotDuration) / 60;
				var m = (i * this.renderData.rowHeaderGridSlotDuration) % 60;

				this.styleRowHeaderCell(td, h, m, rd);

                this._addMinutesClasses(td, m);

			}, this);

			var lc = this._rowHeaderLabelContainer;
			count = (Math.floor(60 / this.rowHeaderLabelSlotDuration) * renderData.hourCount) - lc.childNodes.length;

			var span;
			if(count>0){ // creation
				for(var i=0; i < count; i++){
					span = domConstruct.create("span", null, lc);
					domClass.add(span, "dojoxCalendarRowHeaderLabel");
				}
			}else{
				count = -count;
				// deletion of existing nodes
				for(var i=0; i < count; i++){
					lc.removeChild(lc.lastChild);
				}
			}

			size = Math.ceil(renderData.hourSize / (60 / this.rowHeaderLabelSlotDuration));

			query(">span", lc).forEach(function(span, i){
				d.setHours(0);
				d.setMinutes(renderData.minHours * 60 + (i*this.rowHeaderLabelSlotDuration));
				this._configureRowHeaderLabel(span, d, i, size*i, rd);
			}, this);

		},

		_configureRowHeaderLabel: function(node, d, index, pos, renderData){
			// summary:
			//		Configures the label of a row header cell.
			// node: DOMNode
			//		The DOM node that is the parent of the label.
			// d:Date
			//		A date object that contains the hours and minutes displayed by this row header cell.
			// index: Integer
			//		The index of this row header cell
			// pos: Integer
			//		The computed position of the row header cell
			// renderData: Object
			//		The render data.

			this._setText(node, this._formatRowHeaderLabel(d));
			domStyle.set(node, "top", (pos + (index==0?this.rowHeaderFirstLabelOffset:this.rowHeaderLabelOffset))+"px");
			var h = renderData.minHours + (index * this.rowHeaderLabelSlotDuration) / 60;
			var m = (index * this.rowHeaderLabelSlotDuration) % 60;
			domClass.remove(node, ["hour", "halfhour", "quarterhour"]);
            this._addMinutesClasses(node, m);
            this.styleRowHeaderCell(node, h, m, renderData);
		},

		styleRowHeaderCell: function(node, h, m, renderData){
			// summary:
			//		Styles the CSS classes to the node that displays a row header cell.
			//		By default this method is doing nothing.
			// node: Node
			//		The DOM node that displays the column in the grid.
			// h: Integer
			//		The time of day displayed by this row header cell.
			// renderData: Object
			//		The render data.
			// tags:
			//		protected
		},

		_buildGrid: function (renderData, oldRenderData){
			// summary:
			//		Creates incrementally the HTML structure of the grid and configures its content.
			//
			// renderData:
			//		The render data to display.
			//
			// oldRenderData:
			//		The previously render data displayed, if any.
			// tags:
			//		private


			var table = this.gridTable;

			if (!table){
				return;
			}

			domStyle.set(table, "height", renderData.sheetHeight + "px");

			var nbRows = Math.floor(60 / renderData.slotDuration) * renderData.hourCount;

			var rowDiff = nbRows -
				(oldRenderData ? Math.floor(60 / oldRenderData.slotDuration) * oldRenderData.hourCount : 0);

			var addRows = rowDiff > 0;

			var colDiff  = (renderData.columnCount - (oldRenderData ? oldRenderData.columnCount : 0));

			if(has("ie") == 8){
				// workaround Internet Explorer 8 bug.
				// if on the table, width: 100% and table-layout: fixed are set
				// and columns are removed, width of remaining columns is not
				// recomputed: must rebuild all.
				if(this._gridTableSave == null){
					this._gridTableSave = lang.clone(table);
				}else if(colDiff < 0){
					this.grid.removeChild(table);
					domConstruct.destroy(table);
					table = lang.clone(this._gridTableSave);
					this.gridTable = table;
					this.grid.appendChild(table);
					colDiff = renderData.columnCount;
					rowDiff = nbRows;
					addRows = true;
				}
			}

			var tbodies = query("tbody", table);
			var tbody;

			if (tbodies.length == 1){
				tbody = tbodies[0];
			}else{
				tbody = domConstruct.create("tbody", null, table);
			}

			// Build time slots (lines) HTML structure (incremental)
			if(addRows){ // creation
				for(var i=0; i<rowDiff; i++){
					domConstruct.create("tr", null, tbody);
				}
			}else{ // deletion
				rowDiff = -rowDiff;
				for(var i=0; i<rowDiff; i++){
					tbody.removeChild(tbody.lastChild);
				}
			}

			var rowIndex = Math.floor(60 / renderData.slotDuration) * renderData.hourCount - rowDiff;

			var addCols = addRows || colDiff >0;
			colDiff = addCols ? colDiff : -colDiff;

			query("tr", table).forEach(function(tr, i){

				if(addCols){ // creation
					var len = i >= rowIndex ? renderData.columnCount : colDiff;
					for(var i=0; i<len; i++){
						domConstruct.create("td", null, tr);
					}
				}else{ // deletion
					for(var i=0; i<colDiff; i++){
						tr.removeChild(tr.lastChild);
					}
				}
			});

			// Set the CSS classes

			query("tr", table).forEach(function (tr, i){

				domStyle.set(tr, "height", renderData.slotSize + "px");

				if(i == 0){
					domClass.add(tr, "first-child");
				}else if(i == nbRows-1){
					domClass.add(tr, "last-child");
				}

				// the minutes part of the time of day displayed by the current tr
				var m = (i * this.renderData.slotDuration) % 60;
				var h = this.minHours + Math.floor((i * this.renderData.slotDuration) / 60);
				query("td", tr).forEach(function (td, col){

					td.className = "";

					if(col == 0){
						domClass.add(td, "first-child");
					}else if(col == this.renderData.columnCount-1){
						domClass.add(td, "last-child");
					}

					var d = renderData.dates[col];

					this.styleGridCell(td, d, h, m, renderData);

                    this._addMinutesClasses(td, m);

				}, this);
			}, this);

		},

		// styleGridCellFunc: Function
		//		Custom function to customize the appearance of a grid cell by installing custom CSS class on the node.
		//		The signature of the function must be the same then the styleGridCell one.
		//		By default the defaultStyleGridCell function is used.
		styleGridCellFunc: null,

		defaultStyleGridCell: function(node, date, hours, minutes, renderData){
			// summary:
			//		Styles the CSS classes to the node that displays a cell.
			//		By default this method is setting:
			//		- "dojoxCalendarToday" class name if the date displayed is the current date,
			//		- "dojoxCalendarWeekend" if the date represents a weekend,
			//		- the CSS class corresponding of the displayed day of week ("Sun", "Mon" and so on),
			//		- the CSS classes corresponfing to the time of day (e.g. "H14" and "M30" for for 2:30pm).
			// node: Node
			//		The DOM node that displays the cell in the grid.
			// date: Date
			//		The date displayed by this cell.
			// hours: Integer
			//		The hours part of time of day displayed by the start of this cell.
			// minutes: Integer
			//		The minutes part of time of day displayed by the start of this cell.
			// renderData: Object
			//		The render data object.
			// tags:
			//		protected

			domClass.add(node, [this._cssDays[date.getDay()], "H"+hours, "M"+minutes]);

			if(this.isToday(date)){
				return domClass.add(node, "dojoxCalendarToday");
			} else if(this.isWeekEnd(date)){
				return domClass.add(node, "dojoxCalendarWeekend");
			}
		},

		styleGridCell: function(node, date, hours, minutes, renderData){
			// summary:
			//		Styles the CSS classes to the node that displays a cell.
			//		Delegates to styleGridCellFunc if defined or defaultStyleGridCell otherwise.
			// node: Node
			//		The DOM node that displays the cell in the grid.
			// date: Date
			//		The date displayed by this column
			// renderData: Object
			//		The render data object.
			// tags:
			//		protected

			if(this.styleGridCellFunc){
				this.styleGridCellFunc(node, date, hours, minutes, renderData);
			}else{
				this.defaultStyleGridCell(node, date, hours, minutes, renderData);
			}
		},

		_buildItemContainer: function(renderData, oldRenderData){
			// summary:
			//		Creates the HTML structure of the item container and configures its content.
			// renderData:
			//		The render data to display.
			// oldRenderData:
			//		The previously render data displayed, if any.
			// tags:
			//		private

			var table = this.itemContainerTable;

			if (!table){
				return;
			}

			var bgCols = [], decoCols = [];

			domStyle.set(table, "height", renderData.sheetHeight + "px");
			var oldCount = oldRenderData ? oldRenderData.columnCount : 0;
			var count = renderData.columnCount - oldCount;

			if(has("ie") == 8){
				// workaround Internet Explorer 8 bug.
				// if on the table, width: 100% and table-layout: fixed are set
				// and columns are removed, width of remaining columns is not
				// recomputed: must rebuild all.
				if(this._itemTableSave == null){
					this._itemTableSave = lang.clone(table);
				}else if(count < 0){
					this.itemContainer.removeChild(table);
					this._recycleItemRenderers(true);
					domConstruct.destroy(table);
					table = lang.clone(this._itemTableSave);
					this.itemContainerTable = table;
					this.itemContainer.appendChild(table);
					count = renderData.columnCount;
				}

			} // else incremental dom add/remove for real browsers.

			var tbodies = query("tbody", table);
			var trs = query("tr", table);
			var tbody, tr, td;

			if (tbodies.length == 1){
				tbody = tbodies[0];
			}else{
				tbody = domConstruct.create("tbody", null, table);
			}

			if (trs.length == 1){
				tr = trs[0];
			}else{
				tr = domConstruct.create("tr", null, tbody);
			}

			var subCount = renderData.subColumnCount;

			// Build HTML structure (incremental)
			if(count>0){ // creation
				for(var i=0; i < count; i++){
					td = domConstruct.create("td", null, tr);
					domConstruct.create("div", {"className": "dojoxCalendarContainerColumn"}, td);
				}
			}else{ // deletion
				count = -count;
				for(var i=0; i < count; i++){
					tr.removeChild(tr.lastChild);
				}
			}


			query("td", table).forEach(function(td, i){

				query(".dojoxCalendarContainerColumn", td).forEach(function(div, i){
					domStyle.set(div, "height", renderData.sheetHeight + "px");
					var count = query(".dojoxCalendarSubContainerColumn", td).length - subCount;
					if(count != 0){
						var len = div.childNodes.length;
						for(var i=0; i<len; i++){
							div.removeChild(div.lastChild);
						}
						for(var j=0; j<subCount; j++){
							var subdiv = domConstruct.create("div", {"className": "dojoxCalendarSubContainerColumn"}, div);
							domConstruct.create("div", {"className": "dojoxCalendarDecorationContainerColumn"}, subdiv);
							domConstruct.create("div", {"className": "dojoxCalendarEventContainerColumn"}, subdiv);
						}
					}
				}, this);

				var colW = (100/subCount) + "%";
				query(".dojoxCalendarSubContainerColumn", td).forEach(function(div, i){
					var col = subCount == 1 ? i : Math.floor(i / subCount);
					subColIdx = subCount == 1 ? 0 : i - col * subCount;
					domStyle.set(div, {width: colW, left: ((subColIdx * 100)/subCount)+"%"});
					domClass[subColIdx<subCount-1 && subCount !== 1?"add":"remove"](div, "subColumn");

					query(".dojoxCalendarEventContainerColumn", div).forEach(function(eventContainer, i){
						bgCols.push(eventContainer);
					}, this);

					query(".dojoxCalendarDecorationContainerColumn", div).forEach(function(decoContainer, i){
						decoCols.push(decoContainer);
					}, this);
				}, this);



			}, this);

			renderData.cells = bgCols;
			renderData.decorationCells = decoCols;
		},

		// showTimeIndicator: Boolean
		//		Whether show or not an indicator (default a red line) at the current time.
		showTimeIndicator: true,

		// timeIndicatorRefreshInterval: Integer
		//		Maximal interval between two refreshes of time indicator, in milliseconds.
		timeIndicatorRefreshInterval: 60000,

		_setShowTimeIndicatorAttr: function(value){
			this._set("showTimeIndicator", value);
			this._layoutTimeIndicator(this.renderData);
		},

		_layoutTimeIndicator: function(renderData){
			if(!renderData){
				return;
			}

			if(this.showTimeIndicator){

				var now = new renderData.dateClassObj();

				var visible = this.isOverlapping(renderData, renderData.startTime, renderData.endTime, now, now) &&
				 	now.getHours() >= this.get("minHours") &&
					(now.getHours()*60+now.getMinutes() < this.get("maxHours")*60);

				if(visible){

					if(!this._timeIndicator){
						this._timeIndicator = domConstruct.create("div",
								{"className": "dojoxCalendarTimeIndicator"});
					}

					var node = this._timeIndicator;

					for(var column=0; column<this.renderData.columnCount; column++){
						if(this.isSameDay(now, this.renderData.dates[column])){
							break;
						}
					}

					var top = this.computeProjectionOnDate(renderData, this.floorToDay(now), now, renderData.sheetHeight);

					if(top != renderData.sheetHeight){

						domStyle.set(node, {top: top+"px", display: "block"});
						var parentNode = renderData.cells[column*renderData.subColumnCount].parentNode.parentNode;
						if(parentNode != node.parentNode){
							if(node.parentNode != null){
								node.parentNode.removeChild(node);
							}
							parentNode.appendChild(node);
						}

						if(this._timeIndicatorTimer == null){
							this._timeIndicatorTimer = setInterval(lang.hitch(this, function(){
								this._layoutTimeIndicator(this.renderData);
							}), this.timeIndicatorRefreshInterval);
						}
						return;
					}
				}

			}

			// not visible or specifically not shown fallback

			if(this._timeIndicatorTimer){
				clearInterval(this._timeIndicatorTimer);
				this._timeIndicatorTimer = null;
			}
			if(this._timeIndicator){
				domStyle.set(this._timeIndicator, "display", "none");
			}

		},

		beforeDeactivate: function(){
			if(this._timeIndicatorTimer){
				clearInterval(this._timeIndicatorTimer);
				this._timeIndicatorTimer = null;
			}
		},

		///////////////////////////////////////////////////////////////
		//
		// Layout
		//
		///////////////////////////////////////////////////////////////

		_overlapLayoutPass2: function(lanes){
			// summary:
			//		Second pass of the overlap layout (optional). Compute the extent of each layout item.
			// lanes:
			//		The array of lanes.
			// tags:
			//		private
			var i,j,lane, layoutItem;
			// last lane, no extent possible
			lane = lanes[lanes.length-1];

			for(j = 0; j < lane.length; j++){
				lane[j].extent = 1;
			}

			for(i=0; i<lanes.length-1; i++){
				lane = lanes[i];

				for(var j=0; j<lane.length; j++){
					layoutItem = lane[j];

					// if item was already overlapping another one there is no extent possible.
					if(layoutItem.extent == -1){
						layoutItem.extent = 1;
						var space = 0;

						var stop = false;

						for(var k = i + 1; k < lanes.length && !stop; k++){
							var ccol = lanes[k];
							for(var l = 0; l < ccol.length && !stop; l++){
								var layoutItem2 = ccol[l];

								if(layoutItem.start < layoutItem2.end && layoutItem2.start < layoutItem.end){
									stop = true;
								}
							}
							if(!stop){
								//no hit in the entire lane
								space++;
							}
						}
						layoutItem.extent += space;
					}
				}
			}
		},

		_defaultItemToRendererKindFunc: function(item){
			// tags:
			//		private
			return "vertical"; // String
		},

		_layoutInterval: function(/*Object*/renderData, /*Integer*/index, /*Date*/start, /*Date*/end, /*Object[]*/items, /*String*/itemsType){
			// tags:
			//		private

			var verticalItems = [];

			renderData.colW = this.itemContainer.offsetWidth / renderData.columnCount;

			if(itemsType === "dataItems"){

				for(var i=0; i<items.length; i++){
					var item = items[i];
					var kind = this._itemToRendererKind(item);
					if(kind === "vertical"){
						verticalItems.push(item);
					}
				}

				this._layoutRendererWithSubColumns(renderData, "vertical", true, index, start, end, verticalItems, itemsType);

			}else{ // itemsType === "decorationItems"

				// no different rendererKind for decoration yet
				this._layoutRendererWithSubColumns(renderData, "decoration", false, index, start, end, items, itemsType);
			}
		},

		_layoutRendererWithSubColumns: function(renderData, rendererKind, computeOverlap, index, start, end, items, itemsType){
			if(items.length > 0){
				if(renderData.subColumnCount > 1){
					var subColumnItems = {};
					var subCols = this.subColumns;
					arr.forEach(subCols, function(subCol){
						subColumnItems[subCol] = [];
					});
					arr.forEach(items, function(item){
						if(itemsType === "decorationItems"){
							if(item.subColumn){
								if(subColumnItems[item.subColumn]){
									subColumnItems[item.subColumn].push(item);
								}
							}else{ // for decorations, if no sub column is set, apply to all sub columns
								arr.forEach(subCols, function(subCol){
									var clonedItem = lang.mixin({}, item);
									clonedItem.subColumn = subCol;
									subColumnItems[subCol].push(clonedItem);
								});
							}
						}else if(item.subColumn && subColumnItems[item.subColumn]){
							subColumnItems[item.subColumn].push(item);
						}
					});
					var subColIndex = 0;
					arr.forEach(this.subColumns, function(subCol){
						this._layoutVerticalItems(renderData, rendererKind, computeOverlap, index, subColIndex++, start, end, subColumnItems[subCol], itemsType);
					}, this);
				}else{
					this._layoutVerticalItems(renderData, rendererKind, computeOverlap, index, 0, start, end, items, itemsType);
				}
			}
		},

		_getColumn: function(renderData, index, subIndex, itemsType){
			var cols = itemsType === "dataItems" ? renderData.cells : renderData.decorationCells;
			return cols[index * renderData.subColumnCount + subIndex];
		},

		_layoutVerticalItems: function(/*Object*/renderData, /*String*/ rendererKind, /*boolean*/ computeOverlap,
				/*Integer*/index, /*Integer*/subIndex, /*Date*/startTime, /*Date*/endTime, /*Object[]*/items, /*String*/itemsType){
			// tags:
			//		private

			if(itemsType === "dataItems" && this.verticalRenderer == null ||
				itemsType === "decorationItems" && this.verticalDecorationRenderer == null){
				return;
			}

			var cell = this._getColumn(renderData, index, subIndex, itemsType);

			var layoutItems = [];

			// step 1 compute projected position and size
			for(var i = 0; i < items.length; i++){

				var item = items[i];
				var overlap = this.computeRangeOverlap(renderData, item.startTime, item.endTime, startTime, endTime);

				var top = this.computeProjectionOnDate(renderData, startTime, overlap[0], renderData.sheetHeight);
				var bottom = this.computeProjectionOnDate(renderData, startTime, overlap[1], renderData.sheetHeight);

				if (bottom > top){
					var litem = lang.mixin({
						start: top,
						end: bottom,
						range: overlap,
						item: item
					}, item);
					layoutItems.push(litem);
				}
			}

			// step 2: compute overlapping layout
			var numLanes = itemsType === "dataItems" ? this.computeOverlapping(layoutItems, this._overlapLayoutPass2).numLanes : 1;

			var hOverlap = this.percentOverlap / 100;

			// step 3: create renderers and apply layout
			for(i=0; i<layoutItems.length; i++){

				item = layoutItems[i];
				var w, posX, ir, renderer;

				if(itemsType === "dataItems"){

					var lane = item.lane;
					var extent = item.extent;

					if(hOverlap == 0) {
						//no overlap and a padding between each event
						w = numLanes == 1 ? renderData.colW : ((renderData.colW - (numLanes - 1) * this.horizontalGap)/ numLanes);
						posX = lane * (w + this.horizontalGap);
						w = extent == 1 ? w : w * extent + (extent-1) * this.horizontalGap;
						w = 100 * w / renderData.colW;
						posX = 100 * posX / renderData.colW;
					} else {
						// an overlap
						w = numLanes == 1 ? 100 : (100 / (numLanes - (numLanes - 1) * hOverlap));
						posX = lane * (w - hOverlap*w);
						w = extent == 1 ? w : w * ( extent - (extent-1) * hOverlap);
					}

					ir = this._createRenderer(item, "vertical", this.verticalRenderer, "dojoxCalendarVertical");

					var edited = this.isItemBeingEdited(item);
					var selected = this.isItemSelected(item);
					var hovered = this.isItemHovered(item);
					var focused = this.isItemFocused(item);

					renderer = ir.renderer;

					renderer.set("hovered", hovered);
					renderer.set("selected", selected);
					renderer.set("edited", edited);
					renderer.set("focused", this.showFocus ? focused : false);
					renderer.set("storeState", this.getItemStoreState(item));

					renderer.set("moveEnabled", this.isItemMoveEnabled(item._item, "vertical"));
					renderer.set("resizeEnabled", this.isItemResizeEnabled(item._item, "vertical"));

					this.applyRendererZIndex(item, ir, hovered, selected, edited, focused);

				} else {
					w = 100;
					posX = 0;
					ir = this.decorationRendererManager.createRenderer(item, "vertical", this.verticalDecorationRenderer, "dojoxCalendarDecoration");
					renderer = ir.renderer;
				}

				domStyle.set(ir.container, {
					"top": item.start + "px",
					"left": posX + "%",
					"width": w + "%",
					"height": (item.end-item.start+1) + "px"
				});

				if(renderer.updateRendering){
					renderer.updateRendering(w, item.end-item.start+1);
				}

				domConstruct.place(ir.container, cell);
				domStyle.set(ir.container, "display", "block");
			}
		},

		_sortItemsFunction: function(a, b){
			// tags:
			//		private

			var res = this.dateModule.compare(a.startTime, b.startTime);
			if(res == 0){
				res = -1 * this.dateModule.compare(a.endTime, b.endTime);
			}
			return this.isLeftToRight() ? res : -res;
		},

		///////////////////////////////////////////////////////////////
		//
		// View to time projection
		//
		///////////////////////////////////////////////////////////////

		_getNormalizedCoords: function(e, x, y, touchIndex){
			if (e != null){
				var refPos = domGeometry.position(this.itemContainer, true);

				if(e.touches){

					touchIndex = touchIndex==undefined ? 0 : touchIndex;

					x = e.touches[touchIndex].pageX - refPos.x;
					y = e.touches[touchIndex].pageY - refPos.y;

				}else{

					x = e.pageX - refPos.x;
					y = e.pageY - refPos.y;
				}
			}

			var r = domGeometry.getContentBox(this.itemContainer);

			if(!this.isLeftToRight()){
				x = r.w - x;
			}

			if (x < 0){
				x = 0;
			}else if(x > r.w){
				x = r.w-1;
			}

			if (y < 0){
				y = 0;
			}else if(y > r.h){
				y = r.h-1;
			}

			return {x: x, y: y};
		},

		getTime: function(e, x, y, touchIndex){
			// summary:
			//		Returns the time displayed at the specified point by this component.
			// e: Event
			//		Optional mouse event.
			// x: Number
			//		Position along the x-axis with respect to the sheet container used if event is not defined.
			// y: Number
			//		Position along the y-axis with respect to the sheet container (scroll included) used if event is not defined.
			// touchIndex: Integer
			//		If parameter 'e' is not null and a touch event, the index of the touch to use.
			// returns: Date

			var o = this._getNormalizedCoords(e, x, y, touchIndex);
			var t = this.getTimeOfDay(o.y, this.renderData);
			var colW = domGeometry.getMarginBox(this.itemContainer).w / this.renderData.columnCount;
			var col = Math.floor(o.x / colW);

			var date = null;
			if(col < this.renderData.dates.length){
				date = this.newDate(this.renderData.dates[col]);
				date = this.floorToDay(date, true);
				date.setHours(t.hours);
				date.setMinutes(t.minutes);
			}

			return date;
		},

		getSubColumn: function(e, x, y, touchIndex){
			// summary:
			//		Returns the sub column at the specified point by this component.
			// e: Event
			//		Optional mouse event.
			// x: Number
			//		Position along the x-axis with respect to the sheet container used if event is not defined.
			// y: Number
			//		Position along the y-axis with respect to the sheet container (scroll included) used if event is not defined.
			// touchIndex: Integer
			//		If parameter 'e' is not null and a touch event, the index of the touch to use.
			// returns: Object

			if(this.subColumns == null || this.subColumns.length == 1){
				return null;
			}
			var o = this._getNormalizedCoords(e, x, y, touchIndex);
			var rd = this.renderData;
			var colW = domGeometry.getMarginBox(this.itemContainer).w / this.renderData.columnCount;
			var col = Math.floor(o.x / colW);
			var idx = Math.floor((o.x - col*colW) / (colW / rd.subColumnCount));
			return this.subColumns[idx];
		},

		///////////////////////////////////////////////////////////////
		//
		// Events
		//
		///////////////////////////////////////////////////////////////

		_onGridMouseUp: function(e){
			// tags:
			//		private

			this.inherited(arguments);

			if (this._gridMouseDown) {
				this._gridMouseDown = false;

				this._onGridClick({
					date: this.getTime(e),
					triggerEvent: e
				});
			}
		},

		_onGridTouchStart: function(e){
			// tags:
			//		private

			this.inherited(arguments);

			var g = this._gridProps;

			g.moved= false;
			g.start= e.touches[0].screenY;
			g.scrollTop= this._getScrollPosition();
		},

		_onGridTouchMove: function(e){
			// tags:
			//		private

			this.inherited(arguments);

			if (e.touches.length > 1 && !this._isEditing){
				event.stop(e);
				return;
			}

			if(this._gridProps && !this._isEditing){

				var touch = {x: e.touches[0].screenX, y: e.touches[0].screenY};

				var p = this._edProps;

				if (!p || p &&
					(Math.abs(touch.x - p.start.x) > 25 ||
					 Math.abs(touch.y - p.start.y) > 25)) {

					this._gridProps.moved = true;
					var d = e.touches[0].screenY - this._gridProps.start;
					var value = this._gridProps.scrollTop - d;
					var max = this.itemContainer.offsetHeight - this.scrollContainer.offsetHeight;
					if (value < 0){
						this._gridProps.start = e.touches[0].screenY;
						this._setScrollImpl(0);
						this._gridProps.scrollTop = 0;
					}else if(value > max){
						this._gridProps.start = e.touches[0].screenY;
						this._setScrollImpl(max);
						this._gridProps.scrollTop = max;
					}else{
						this._setScrollImpl(value);
					}
				}
			}
		},

		_onGridTouchEnd: function(e){
			// tags:
			//		private

			//event.stop(e);

			this.inherited(arguments);

			var g = this._gridProps;

			if(g){
				if(!this._isEditing){
					if(!g.moved){

						// touched on grid and on touch start editing was ongoing.
						if(!g.fromItem && !g.editingOnStart){
							this.selectFromEvent(e, null, null, true);
						}

						if(!g.fromItem){

							if(this._pendingDoubleTap && this._pendingDoubleTap.grid){

								this._onGridDoubleClick({
									date: this.getTime(this._gridProps.event),
									triggerEvent: this._gridProps.event
								});

								clearTimeout(this._pendingDoubleTap.timer);

								delete this._pendingDoubleTap;

							}else{

								this._onGridClick({
									date: this.getTime(this._gridProps.event),
									triggerEvent: this._gridProps.event
								});

								this._pendingDoubleTap = {
									grid: true,
									timer: setTimeout(lang.hitch(this, function(){
											delete this._pendingDoubleTap;
									}), this.doubleTapDelay)
								};
							}
						}
					}
				}

				this._gridProps = null;
			}
		},

		_onColumnHeaderClick: function(e){
			// tags:
			//		private

			this._dispatchCalendarEvt(e, "onColumnHeaderClick");
		},



		onColumnHeaderClick: function(e){
			// summary:
			//		Event dispatched when a column header cell is dispatched.
			// e: __ColumnClickEventArgs
			//		The event has the following properties
			// tags:
			//		callback
		},


		getTimeOfDay: function (pos, rd) {
			// summary:
			//		Return the time of day associated to the specified position.
			// pos: Integer
			//		The position in pixels.
			// rd: Object
			//		The render data.
			var minH = rd.minHours*60;
			var maxH = rd.maxHours*60;
			var minutes = minH + (pos * (maxH - minH) / rd.sheetHeight);
			return {
				hours: Math.floor(minutes / 60),
				minutes: Math.floor(minutes % 60)
			};
		},

		///////////////////////////////////////////////////////////////
		//
		// View limits
		//
		///////////////////////////////////////////////////////////////

		_isItemInView: function(item){

			// subclassed to add some tests

			var res = this.inherited(arguments);

			if(res){

				// test if time range is overlapping [maxHours, next day min hours]
				var rd = this.renderData;

				var len = rd.dateModule.difference(item.startTime, item.endTime, "millisecond");
				var vLen = (24 - rd.maxHours + rd.minHours) * 3600000; // 60 * 60 * 1000, number of milliseconds in 1 minute

				if(len > vLen){ // longer events are always visible
					return true;
				}

				var sMin = item.startTime.getHours()*60 + item.startTime.getMinutes();
				var eMin = item.endTime.getHours()*60 + item.endTime.getMinutes();
				var sV = rd.minHours * 60;
				var eV = rd.maxHours * 60;

				if(sMin > 0 && sMin < sV || sMin > eV && sMin <= 1440){
					return false;
				}

				if(eMin > 0 && eMin < sV || eMin > eV && eMin <= 1440){
					return false;
				}
			}
			return res;
		},

		_ensureItemInView: function(item){

			var fixed;

			var startTime = item.startTime;
			var endTime = item.endTime;

			// test if time range is overlapping [maxHours, next day min hours]
			var rd = this.renderData;
			var cal = rd.dateModule;

			var len = Math.abs(cal.difference(item.startTime, item.endTime, "millisecond"));
			var vLen = (24 - rd.maxHours + rd.minHours) * 3600000;

			if(len > vLen){ // longer events are always visible
				return false;
			}

			var sMin = startTime.getHours()*60 + startTime.getMinutes();
			var eMin = endTime.getHours()*60 + endTime.getMinutes();
			var sV = rd.minHours * 60;
			var eV = rd.maxHours * 60;

			if(sMin > 0 && sMin < sV){
				this.floorToDay(item.startTime, true, rd);
				item.startTime.setHours(rd.minHours);
				item.endTime = cal.add(item.startTime, "millisecond", len);
				fixed = true;
			}else if(sMin > eV && sMin <= 1440){
				// go on next visible time
				this.floorToDay(item.startTime, true, rd);
				item.startTime = cal.add(item.startTime, "day", 1);
				// if we are going out of the view, the super() will fix it
				item.startTime.setHours(rd.minHours);
				item.endTime = cal.add(item.startTime, "millisecond", len);
				fixed = true;
			}

			if(eMin > 0 && eMin < sV){
				// go on previous day
				this.floorToDay(item.endTime, true, rd);
				item.endTime = cal.add(item.endTime, "day", -1);
				item.endTime.setHours(rd.maxHours);
				item.startTime = cal.add(item.endTime, "millisecond", -len);
				fixed = true;
			}else if(eMin > eV && eMin <= 1440){
				this.floorToDay(item.endTime, true, rd);
				item.endTime.setHours(rd.maxHours);
				item.startTime = cal.add(item.endTime, "millisecond", -len);
				fixed = true;
			}

			fixed = fixed || this.inherited(arguments);

			return fixed;
		},

		_onScrollTimer_tick: function(){
			// tags:
			//		private

			this._scrollToPosition(this._getScrollPosition() + this._scrollProps.scrollStep);
		},

		////////////////////////////////////////////
		//
		// Editing
		//
		///////////////////////////////////////////

		snapUnit: "minute",
		snapSteps: 15,
		minDurationUnit: "minute",
		minDurationSteps: 15,
		liveLayout: false,
		stayInView: true,
		allowStartEndSwap: true,
		allowResizeLessThan24H: true

	});
});