/* An abstract class for the "basic" views, as well as month view. Renders one or more rows of day cells.
----------------------------------------------------------------------------------------------------------------------*/
// It is a manager for a DayGrid subcomponent, which does most of the heavy lifting.
// It is responsible for managing width/height.

function BasicView(calendar) {
	View.call(this, calendar); // call the super-constructor
	this.dayGrid = new DayGrid(this);
	this.coordMap = this.dayGrid.coordMap; // the view's date-to-cell mapping is identical to the subcomponent's
}


BasicView.prototype = createObject(View.prototype); // define the super-class
$.extend(BasicView.prototype, {

	dayGrid: null, // the main subcomponent that does most of the heavy lifting

	dayNumbersVisible: false, // display day numbers on each day cell?
	weekNumbersVisible: false, // display week numbers along the side?

	weekNumberWidth: null, // width of all the week-number cells running down the side

	headRowEl: null, // the fake row element of the day-of-week header


	// Renders the view into `this.el`, which should already be assigned.
	// rowCnt, colCnt, and dayNumbersVisible have been calculated by a subclass and passed here.
	render: function(rowCnt, colCnt, dayNumbersVisible) {

		// needed for cell-to-date and date-to-cell calculations in View
		this.rowCnt = rowCnt;
		this.colCnt = colCnt;

		this.dayNumbersVisible = dayNumbersVisible;
		this.weekNumbersVisible = this.opt('weekNumbers');
		this.dayGrid.numbersVisible = this.dayNumbersVisible || this.weekNumbersVisible;

		this.el.addClass('fc-basic-view').html(this.renderHtml());

		this.headRowEl = this.el.find('thead .fc-row');

		this.scrollerEl = this.el.find('.fc-day-grid-container');
		this.dayGrid.coordMap.containerEl = this.scrollerEl; // constrain clicks/etc to the dimensions of the scroller

		this.dayGrid.el = this.el.find('.fc-day-grid');
		this.dayGrid.render(this.hasRigidRows());

		View.prototype.render.call(this); // call the super-method
	},


	// Make subcomponents ready for cleanup
	destroy: function() {
		this.dayGrid.destroy();
		View.prototype.destroy.call(this); // call the super-method
	},


	// Builds the HTML skeleton for the view.
	// The day-grid component will render inside of a container defined by this HTML.
	renderHtml: function() {
		return '' +
			'<table>' +
				'<thead>' +
					'<tr>' +
						'<td class="' + this.widgetHeaderClass + '">' +
							this.dayGrid.headHtml() + // render the day-of-week headers
						'</td>' +
					'</tr>' +
				'</thead>' +
				'<tbody>' +
					'<tr>' +
						'<td class="' + this.widgetContentClass + '">' +
							'<div class="fc-day-grid-container">' +
								'<div class="fc-day-grid"/>' +
							'</div>' +
						'</td>' +
					'</tr>' +
				'</tbody>' +
			'</table>';
	},


	// Generates the HTML that will go before the day-of week header cells.
	// Queried by the DayGrid subcomponent when generating rows. Ordering depends on isRTL.
	headIntroHtml: function() {
		if (this.weekNumbersVisible) {
			return '' +
				'<th class="fc-week-number ' + this.widgetHeaderClass + '" ' + this.weekNumberStyleAttr() + '>' +
					'<span>' + // needed for matchCellWidths
						htmlEscape(this.opt('weekNumberTitle')) +
					'</span>' +
				'</th>';
		}
	},


	// Generates the HTML that will go before content-skeleton cells that display the day/week numbers.
	// Queried by the DayGrid subcomponent. Ordering depends on isRTL.
	numberIntroHtml: function(row) {
		if (this.weekNumbersVisible) {
			return '' +
				'<td class="fc-week-number" ' + this.weekNumberStyleAttr() + '>' +
					'<span>' + // needed for matchCellWidths
						this.calendar.calculateWeekNumber(this.cellToDate(row, 0)) +
					'</span>' +
				'</td>';
		}
	},


	// Generates the HTML that goes before the day bg cells for each day-row.
	// Queried by the DayGrid subcomponent. Ordering depends on isRTL.
	dayIntroHtml: function() {
		if (this.weekNumbersVisible) {
			return '<td class="fc-week-number ' + this.widgetContentClass + '" ' +
				this.weekNumberStyleAttr() + '></td>';
		}
	},


	// Generates the HTML that goes before every other type of row generated by DayGrid. Ordering depends on isRTL.
	// Affects helper-skeleton and highlight-skeleton rows.
	introHtml: function() {
		if (this.weekNumbersVisible) {
			return '<td class="fc-week-number" ' + this.weekNumberStyleAttr() + '></td>';
		}
	},


	// Generates the HTML for the <td>s of the "number" row in the DayGrid's content skeleton.
	// The number row will only exist if either day numbers or week numbers are turned on.
	numberCellHtml: function(row, col, date) {
		var classes;

		if (!this.dayNumbersVisible) { // if there are week numbers but not day numbers
			return '<td/>'; //  will create an empty space above events :(
		}

		classes = this.dayGrid.getDayClasses(date);
		classes.unshift('fc-day-number');

		return '' +
			'<td class="' + classes.join(' ') + '" data-date="' + date.format() + '">' +
				date.date() +
			'</td>';
	},


	// Generates an HTML attribute string for setting the width of the week number column, if it is known
	weekNumberStyleAttr: function() {
		if (this.weekNumberWidth !== null) {
			return 'style="width:' + this.weekNumberWidth + 'px"';
		}
		return '';
	},


	// Determines whether each row should have a constant height
	hasRigidRows: function() {
		var eventLimit = this.opt('eventLimit');
		return eventLimit && typeof eventLimit !== 'number';
	},


	/* Dimensions
	------------------------------------------------------------------------------------------------------------------*/


	// Refreshes the horizontal dimensions of the view
	updateWidth: function() {
		if (this.weekNumbersVisible) {
			// Make sure all week number cells running down the side have the same width.
			// Record the width for cells created later.
			this.weekNumberWidth = matchCellWidths(
				this.el.find('.fc-week-number')
			);
		}
	},


	// Adjusts the vertical dimensions of the view to the specified values
	setHeight: function(totalHeight, isAuto) {
		var eventLimit = this.opt('eventLimit');
		var scrollerHeight;

		// reset all heights to be natural
		unsetScroller(this.scrollerEl);
		uncompensateScroll(this.headRowEl);

		this.dayGrid.destroySegPopover(); // kill the "more" popover if displayed

		// is the event limit a constant level number?
		if (eventLimit && typeof eventLimit === 'number') {
			this.dayGrid.limitRows(eventLimit); // limit the levels first so the height can redistribute after
		}

		scrollerHeight = this.computeScrollerHeight(totalHeight);
		this.setGridHeight(scrollerHeight, isAuto);

		// is the event limit dynamically calculated?
		if (eventLimit && typeof eventLimit !== 'number') {
			this.dayGrid.limitRows(eventLimit); // limit the levels after the grid's row heights have been set
		}

		if (!isAuto && setPotentialScroller(this.scrollerEl, scrollerHeight)) { // using scrollbars?

			compensateScroll(this.headRowEl, getScrollbarWidths(this.scrollerEl));

			// doing the scrollbar compensation might have created text overflow which created more height. redo
			scrollerHeight = this.computeScrollerHeight(totalHeight);
			this.scrollerEl.height(scrollerHeight);

			this.restoreScroll();
		}
	},


	// Sets the height of just the DayGrid component in this view
	setGridHeight: function(height, isAuto) {
		if (isAuto) {
			undistributeHeight(this.dayGrid.rowEls); // let the rows be their natural height with no expanding
		}
		else {
			distributeHeight(this.dayGrid.rowEls, height, true); // true = compensate for height-hogging rows
		}
	},


	/* Events
	------------------------------------------------------------------------------------------------------------------*/


	// Renders the given events onto the view and populates the segments array
	renderEvents: function(events) {
		this.dayGrid.renderEvents(events);

		this.updateHeight(); // must compensate for events that overflow the row

		View.prototype.renderEvents.call(this, events); // call the super-method
	},


	// Retrieves all segment objects that are rendered in the view
	getSegs: function() {
		return this.dayGrid.getSegs();
	},


	// Unrenders all event elements and clears internal segment data
	destroyEvents: function() {
		View.prototype.destroyEvents.call(this); // do this before dayGrid's segs have been cleared

		this.recordScroll(); // removing events will reduce height and mess with the scroll, so record beforehand
		this.dayGrid.destroyEvents();

		// we DON'T need to call updateHeight() because:
		// A) a renderEvents() call always happens after this, which will eventually call updateHeight()
		// B) in IE8, this causes a flash whenever events are rerendered
	},


	/* Event Dragging
	------------------------------------------------------------------------------------------------------------------*/


	// Renders a visual indication of an event being dragged over the view.
	// A returned value of `true` signals that a mock "helper" event has been rendered.
	renderDrag: function(start, end, seg) {
		return this.dayGrid.renderDrag(start, end, seg);
	},


	// Unrenders the visual indication of an event being dragged over the view
	destroyDrag: function() {
		this.dayGrid.destroyDrag();
	},


	/* Selection
	------------------------------------------------------------------------------------------------------------------*/


	// Renders a visual indication of a selection
	renderSelection: function(start, end) {
		this.dayGrid.renderSelection(start, end);
	},


	// Unrenders a visual indications of a selection
	destroySelection: function() {
		this.dayGrid.destroySelection();
	}

});