setDefaults({
	weekMode: 'fixed'
});


function BasicView(element, calendar, viewName) {
	var t = this;
	
	
	// exports
	t.renderBasic = renderBasic;
	t.setHeight = setHeight;
	t.setWidth = setWidth;
	t.renderDayOverlay = renderDayOverlay;
	t.defaultSelectionEnd = defaultSelectionEnd;
	t.renderSelection = renderSelection;
	t.clearSelection = clearSelection;
	t.reportDayClick = reportDayClick; // for selection (kinda hacky)
	t.dragStart = dragStart;
	t.dragStop = dragStop;
	t.defaultEventEnd = defaultEventEnd;
	t.getHoverListener = function() { return hoverListener };
	t.colContentLeft = colContentLeft;
	t.colContentRight = colContentRight;
	t.dayOfWeekCol = dayOfWeekCol;
	t.dateCell = dateCell;
	t.cellDate = cellDate;
	t.cellIsAllDay = function() { return true };
	t.allDayRow = allDayRow;
	t.allDayBounds = allDayBounds;
	t.getRowCnt = function() { return rowCnt };
	t.getColCnt = function() { return colCnt };
	t.getColWidth = function() { return colWidth };
	t.getDaySegmentContainer = function() { return daySegmentContainer };
	
	
	// imports
	View.call(t, element, calendar, viewName);
	OverlayManager.call(t);
	SelectionManager.call(t);
	BasicEventRenderer.call(t);
	var opt = t.opt;
	var trigger = t.trigger;
	var clearEvents = t.clearEvents;
	var renderOverlay = t.renderOverlay;
	var clearOverlays = t.clearOverlays;
	var daySelectionMousedown = t.daySelectionMousedown;
	var formatDate = calendar.formatDate;
	
	
	// locals
	
	var table;
	var head;
	var headCells;
	var body;
	var bodyRows;
	var bodyCells;
	var bodyFirstCells;
	var bodyCellTopInners;
	var daySegmentContainer;
	
	var viewWidth;
	var viewHeight;
	var colWidth;
	var weekNumberWidth;
	
	var rowCnt, colCnt;
	var coordinateGrid;
	var hoverListener;
	var colContentPositions;
	
	var rtl, dis, dit;
	var firstDay;
	var nwe; // no weekends? a 0 or 1 for easy computations
	var tm;
	var colFormat;
	var showWeekNumbers;
	var weekNumberTitle;
	var weekNumberFormat;
	
	
	
	/* Rendering
	------------------------------------------------------------*/
	
	
	disableTextSelection(element.addClass('fc-grid'));
	
	
	function renderBasic(r, c, showNumbers) {
		rowCnt = r;
		colCnt = c;
		updateOptions();
		var firstTime = !body;
		if (firstTime) {
			buildEventContainer();
		}else{
			clearEvents();
		}
		buildTable(showNumbers);
	}
	
	
	
	function updateOptions() {
		rtl = opt('isRTL');
		if (rtl) {
			dis = -1;
			dit = colCnt - 1;
		}else{
			dis = 1;
			dit = 0;
		}
		firstDay = opt('firstDay');
		nwe = opt('weekends') ? 0 : 1;
		tm = opt('theme') ? 'ui' : 'fc';
		colFormat = opt('columnFormat');

		// week # options. (TODO: bad, logic also in other views)
		showWeekNumbers = opt('weekNumbers');
		weekNumberTitle = opt('weekNumberTitle');
		if (opt('weekNumberCalculation') != 'iso') {
			weekNumberFormat = "w";
		}
		else {
			weekNumberFormat = "W";
		}
	}
	
	
	
	function buildEventContainer() {
		daySegmentContainer =
			$("<div style='position:absolute;z-index:8;top:0;left:0'/>")
				.appendTo(element);
	}
	
	
	
	function buildTable(showNumbers) {
		var html = '';
		var i, j;
		var headerClass = tm + "-widget-header";
		var contentClass = tm + "-widget-content";
		var month = t.start.getMonth();
		var today = clearTime(new Date());
		var cell;
		var date;

		html += "<table class='fc-border-separate' style='width:100%' cellspacing='0'>" +
		        "<thead>" +
		        "<tr>";
		if (showWeekNumbers) {
			html += "<th class='fc-week-number " + headerClass + "'/>";
		}
		for (i=0; i<colCnt; i++) {
			html += "<th class='fc- fc-day-header " + headerClass + "'/>"; // need fc- for setDayID
		}
		html += "</tr>" +
		        "</thead>" +
		        "<tbody>";
		for (i=0; i<rowCnt; i++) {
			html += "<tr class='fc-week" + i + "'>";
			if (showWeekNumbers) {
				html += "<td class='fc-week-number " + contentClass + "'>" +
				        "<div/>" +
				        "</td>";
			}
			for (j=0; j<colCnt; j++) {
				html += "<td class='fc- fc-day fc-day" + (i*colCnt+j) + " " + contentClass + "'>" + // need fc- for setDayID
				        "<div>";
				if (showNumbers) {
					html += "<div class='fc-day-number'/>";
				}
				html += "<div class='fc-day-content'>" +
				        "<div style='position:relative'>&nbsp;</div>" +
				        "</div>" +
				        "</div>" +
				        "</td>";
			}
			html += "</tr>";
		}
		html += "</tbody>" +
		        "</table>";

		lockHeight(); // the unlock happens later, in setHeight()...
		if (table) {
			table.remove();
		}
		table = $(html).appendTo(element);

		head = table.find('thead');
		headCells = head.find('.fc-day-header');
		body = table.find('tbody');
		bodyRows = body.find('tr');
		bodyCells = body.find('.fc-day');
		bodyFirstCells = bodyRows.find('td:first-child');
		bodyCellTopInners = bodyRows.eq(0).find('.fc-day-content > div');
		
		markFirstLast(head.add(head.find('tr'))); // marks first+last tr/th's
		markFirstLast(bodyRows); // marks first+last td's
		bodyRows.eq(0).addClass('fc-first');
		bodyRows.filter(':last').addClass('fc-last');
		
		dayBind(bodyCells);

		// update head cells
	
		if (showWeekNumbers) {
			head.find('.fc-week-number').text(weekNumberTitle);
		}

		headCells.each(function(i, _cell) {
			cell = $(_cell);
			date = indexDate(i);
			cell.text(formatDate(date, colFormat));
			setDayID(cell, date);
		});

		// update body cells (we should maybe move this into the HTML generation above)

		if (showWeekNumbers) {
			bodyRows.each(function(i, _row) {
				var weekStartDate = _cellDate(i, 0);
				$(_row).find('.fc-week-number > div').text(
					formatDate(weekStartDate, weekNumberFormat)
				);
			});
		}
		
		bodyCells.each(function(i, _cell) {
			cell = $(_cell);
			date = indexDate(i);
			if (date.getMonth() != month) {
				cell.addClass('fc-other-month');
			}
			if (+date == +today) {
				cell.addClass(tm + '-state-highlight fc-today');
			}
			cell.find('.fc-day-number').text(date.getDate());
			cell.attr('data-date', $.fullCalendar.formatDate(date, "yyyyMMdd"));
			setDayID(cell, date);
			trigger('dayRender', t, date, cell);
		});
	}
	
	
	
	function setHeight(height) {
		viewHeight = height;
		
		var bodyHeight = viewHeight - head.height();
		var rowHeight;
		var rowHeightLast;
		var cell;
			
		if (opt('weekMode') == 'variable') {
			rowHeight = rowHeightLast = Math.floor(bodyHeight / (rowCnt==1 ? 2 : 6));
		}else{
			rowHeight = Math.floor(bodyHeight / rowCnt);
			rowHeightLast = bodyHeight - rowHeight * (rowCnt-1);
		}
		
		bodyFirstCells.each(function(i, _cell) {
			if (i < rowCnt) {
				cell = $(_cell);
				setMinHeight(
					cell.find('> div'),
					(i==rowCnt-1 ? rowHeightLast : rowHeight) - vsides(cell)
				);
			}
		});
		
		unlockHeight();
	}
	
	
	function setWidth(width) {
		viewWidth = width;
		colContentPositions.clear();

		weekNumberWidth = 0;
		if (showWeekNumbers) {
			weekNumberWidth = head.find('th.fc-week-number').outerWidth();
		}

		colWidth = Math.floor((viewWidth - weekNumberWidth) / colCnt);
		setOuterWidth(headCells.slice(0, -1), colWidth);
	}
	
	
	
	/* Day clicking and binding
	-----------------------------------------------------------*/
	
	
	function dayBind(days) {
		days.click(dayClick)
			.mousedown(daySelectionMousedown);
	}
	
	
	function dayClick(ev) {
		if (!opt('selectable')) { // if selectable, SelectionManager will worry about dayClick
			var index = parseInt(this.className.match(/fc\-day(\d+)/)[1]); // TODO: maybe use .data
			var date = indexDate(index);
			trigger('dayClick', this, date, true, ev);
		}
	}
	
	
	
	/* Semi-transparent Overlay Helpers
	------------------------------------------------------*/
	
	
	function renderDayOverlay(overlayStart, overlayEnd, refreshCoordinateGrid) { // overlayEnd is exclusive
		if (refreshCoordinateGrid) {
			coordinateGrid.build();
		}
		var rowStart = cloneDate(t.visStart);
		var rowEnd = addDays(cloneDate(rowStart), colCnt);
		for (var i=0; i<rowCnt; i++) {
			var stretchStart = new Date(Math.max(rowStart, overlayStart));
			var stretchEnd = new Date(Math.min(rowEnd, overlayEnd));
			if (stretchStart < stretchEnd) {
				var colStart, colEnd;
				if (rtl) {
					colStart = dayDiff(stretchEnd, rowStart)*dis+dit+1;
					colEnd = dayDiff(stretchStart, rowStart)*dis+dit+1;
				}else{
					colStart = dayDiff(stretchStart, rowStart);
					colEnd = dayDiff(stretchEnd, rowStart);
				}
				dayBind(
					renderCellOverlay(i, colStart, i, colEnd-1)
				);
			}
			addDays(rowStart, 7);
			addDays(rowEnd, 7);
		}
	}
	
	
	function renderCellOverlay(row0, col0, row1, col1) { // row1,col1 is inclusive
		var rect = coordinateGrid.rect(row0, col0, row1, col1, element);
		return renderOverlay(rect, element);
	}
	
	
	
	/* Selection
	-----------------------------------------------------------------------*/
	
	
	function defaultSelectionEnd(startDate, allDay) {
		return cloneDate(startDate);
	}
	
	
	function renderSelection(startDate, endDate, allDay) {
		renderDayOverlay(startDate, addDays(cloneDate(endDate), 1), true); // rebuild every time???
	}
	
	
	function clearSelection() {
		clearOverlays();
	}
	
	
	function reportDayClick(date, allDay, ev) {
		var cell = dateCell(date);
		var _element = bodyCells[cell.row*colCnt + cell.col];
		trigger('dayClick', _element, date, allDay, ev);
	}
	
	
	
	/* External Dragging
	-----------------------------------------------------------------------*/
	
	
	function dragStart(_dragElement, ev, ui) {
		hoverListener.start(function(cell) {
			clearOverlays();
			if (cell) {
				renderCellOverlay(cell.row, cell.col, cell.row, cell.col);
			}
		}, ev);
	}
	
	
	function dragStop(_dragElement, ev, ui) {
		var cell = hoverListener.stop();
		clearOverlays();
		if (cell) {
			var d = cellDate(cell);
			trigger('drop', _dragElement, d, true, ev, ui);
		}
	}
	
	
	
	/* Utilities
	--------------------------------------------------------*/
	
	
	function defaultEventEnd(event) {
		return cloneDate(event.start);
	}
	
	
	coordinateGrid = new CoordinateGrid(function(rows, cols) {
		var e, n, p;
		headCells.each(function(i, _e) {
			e = $(_e);
			n = e.offset().left;
			if (i) {
				p[1] = n;
			}
			p = [n];
			cols[i] = p;
		});
		p[1] = n + e.outerWidth();
		bodyRows.each(function(i, _e) {
			if (i < rowCnt) {
				e = $(_e);
				n = e.offset().top;
				if (i) {
					p[1] = n;
				}
				p = [n];
				rows[i] = p;
			}
		});
		p[1] = n + e.outerHeight();
	});
	
	
	hoverListener = new HoverListener(coordinateGrid);
	
	
	colContentPositions = new HorizontalPositionCache(function(col) {
		return bodyCellTopInners.eq(col);
	});
	
	
	function colContentLeft(col) {
		return colContentPositions.left(col);
	}
	
	
	function colContentRight(col) {
		return colContentPositions.right(col);
	}
	
	
	
	
	function dateCell(date) {
		return {
			row: Math.floor(dayDiff(date, t.visStart) / 7),
			col: dayOfWeekCol(date.getDay())
		};
	}
	
	
	function cellDate(cell) {
		return _cellDate(cell.row, cell.col);
	}
	
	
	function _cellDate(row, col) {
		return addDays(cloneDate(t.visStart), row*7 + col*dis+dit);
		// what about weekends in middle of week?
	}
	
	
	function indexDate(index) {
		return _cellDate(Math.floor(index/colCnt), index%colCnt);
	}
	
	
	function dayOfWeekCol(dayOfWeek) {
		return ((dayOfWeek - Math.max(firstDay, nwe) + colCnt) % colCnt) * dis + dit;
	}
	
	
	
	
	function allDayRow(i) {
		return bodyRows.eq(i);
	}
	
	
	function allDayBounds(i) {
		var left = 0;
		if (showWeekNumbers) {
			left += weekNumberWidth;
		}
		return {
			left: left,
			right: viewWidth
		};
	}



	// makes sure height doesn't collapse while we destroy/render new cells
	// (this causes a bad end-user scrollbar jump)
	// TODO: generalize this for all view rendering. (also in Calendar.js)

	function lockHeight() {
		setMinHeight(element, element.height());
	}

	function unlockHeight() {
		setMinHeight(element, 1);
	}
	
}