Subversion Repositories SmartDukaan

/**
 * @preserve
 * FullCalendar v1.5.4
 * http://arshaw.com/fullcalendar/
 *
 * Use fullcalendar.css for basic styling.
 * For event drag & drop, requires jQuery UI draggable.
 * For event resizing, requires jQuery UI resizable.
 *
 * Copyright (c) 2011 Adam Shaw
 * Dual licensed under the MIT and GPL licenses, located in
 * MIT-LICENSE.txt and GPL-LICENSE.txt respectively.
 *
 * Date: Tue Sep 4 23:38:33 2012 -0700
 *
 */
 
(function($, undefined) {


var defaults = {

        // display
        defaultView: 'month',
        aspectRatio: 1.35,
        header: {
                left: 'title',
                center: '',
                right: 'today prev,next'
        },
        weekends: true,
        
        // editing
        //editable: false,
        //disableDragging: false,
        //disableResizing: false,
        
        allDayDefault: true,
        ignoreTimezone: true,
        
        // event ajax
        lazyFetching: true,
        startParam: 'start',
        endParam: 'end',
        
        // time formats
        titleFormat: {
                month: 'MMMM yyyy',
                week: "MMM d[ yyyy]{ '—'[ MMM] d yyyy}",
                day: 'dddd, MMM d, yyyy'
        },
        columnFormat: {
                month: 'ddd',
                week: 'ddd M/d',
                day: 'dddd M/d'
        },
        timeFormat: { // for event elements
                '': 'h(:mm)t' // default
        },
        
        // locale
        isRTL: false,
        firstDay: 0,
        monthNames: ['January','February','March','April','May','June','July','August','September','October','November','December'],
        monthNamesShort: ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'],
        dayNames: ['Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday'],
        dayNamesShort: ['Sun','Mon','Tue','Wed','Thu','Fri','Sat'],
        buttonText: {
                prev: ' ◄ ',
                next: ' ► ',
                prevYear: ' << ',
                nextYear: ' >> ',
                today: 'today',
                month: 'month',
                week: 'week',
                day: 'day'
        },
        
        // jquery-ui theming
        theme: false,
        buttonIcons: {
                prev: 'circle-triangle-w',
                next: 'circle-triangle-e'
        },
        
        //selectable: false,
        unselectAuto: true,
        
        dropAccept: '*'
        
};

// right-to-left defaults
var rtlDefaults = {
        header: {
                left: 'next,prev today',
                center: '',
                right: 'title'
        },
        buttonText: {
                prev: ' ► ',
                next: ' ◄ ',
                prevYear: ' >> ',
                nextYear: ' << '
        },
        buttonIcons: {
                prev: 'circle-triangle-e',
                next: 'circle-triangle-w'
        }
};



var fc = $.fullCalendar = { version: "1.5.4" };
var fcViews = fc.views = {};


$.fn.fullCalendar = function(options) {


        // method calling
        if (typeof options == 'string') {
                var args = Array.prototype.slice.call(arguments, 1);
                var res;
                this.each(function() {
                        var calendar = $.data(this, 'fullCalendar');
                        if (calendar && $.isFunction(calendar[options])) {
                                var r = calendar[options].apply(calendar, args);
                                if (res === undefined) {
                                        res = r;
                                }
                                if (options == 'destroy') {
                                        $.removeData(this, 'fullCalendar');
                                }
                        }
                });
                if (res !== undefined) {
                        return res;
                }
                return this;
        }
        
        
        // would like to have this logic in EventManager, but needs to happen before options are recursively extended
        var eventSources = options.eventSources || [];
        delete options.eventSources;
        if (options.events) {
                eventSources.push(options.events);
                delete options.events;
        }
        

        options = $.extend(true, {},
                defaults,
                (options.isRTL || options.isRTL===undefined && defaults.isRTL) ? rtlDefaults : {},
                options
        );
        
        
        this.each(function(i, _element) {
                var element = $(_element);
                var calendar = new Calendar(element, options, eventSources);
                element.data('fullCalendar', calendar); // TODO: look into memory leak implications
                calendar.render();
        });
        
        
        return this;
        
};


// function for adding/overriding defaults
function setDefaults(d) {
        $.extend(true, defaults, d);
}



 
function Calendar(element, options, eventSources) {
        var t = this;
        
        
        // exports
        t.options = options;
        t.render = render;
        t.destroy = destroy;
        t.refetchEvents = refetchEvents;
        t.reportEvents = reportEvents;
        t.reportEventChange = reportEventChange;
        t.rerenderEvents = rerenderEvents;
        t.changeView = changeView;
        t.select = select;
        t.unselect = unselect;
        t.prev = prev;
        t.next = next;
        t.prevYear = prevYear;
        t.nextYear = nextYear;
        t.today = today;
        t.gotoDate = gotoDate;
        t.incrementDate = incrementDate;
        t.formatDate = function(format, date) { return formatDate(format, date, options) };
        t.formatDates = function(format, date1, date2) { return formatDates(format, date1, date2, options) };
        t.getDate = getDate;
        t.getView = getView;
        t.option = option;
        t.trigger = trigger;
        
        
        // imports
        EventManager.call(t, options, eventSources);
        var isFetchNeeded = t.isFetchNeeded;
        var fetchEvents = t.fetchEvents;
        
        
        // locals
        var _element = element[0];
        var header;
        var headerElement;
        var content;
        var tm; // for making theme classes
        var currentView;
        var viewInstances = {};
        var elementOuterWidth;
        var suggestedViewHeight;
        var absoluteViewElement;
        var resizeUID = 0;
        var ignoreWindowResize = 0;
        var date = new Date();
        var events = [];
        var _dragElement;
                
        
        /* Main Rendering
        -----------------------------------------------------------------------------*/
        
        
        setYMD(date, options.year, options.month, options.date);
        
        
        function render(inc) {
                if (!content) {
                        initialRender();
                }else{
                        calcSize();
                        markSizesDirty();
                        markEventsDirty();
                        renderView(inc);
                }
        }
        
        
        function initialRender() {
                tm = options.theme ? 'ui' : 'fc';
                element.addClass('fc');
                if (options.isRTL) {
                        element.addClass('fc-rtl');
                }
                if (options.theme) {
                        element.addClass('ui-widget');
                }
                content = $("<div class='fc-content' style='position:relative'/>")
                        .prependTo(element);
                header = new Header(t, options);
                headerElement = header.render();
                if (headerElement) {
                        element.prepend(headerElement);
                }
                changeView(options.defaultView);
                $(window).resize(windowResize);
                // needed for IE in a 0x0 iframe, b/c when it is resized, never triggers a windowResize
                if (!bodyVisible()) {
                        lateRender();
                }
        }
        
        
        // called when we know the calendar couldn't be rendered when it was initialized,
        // but we think it's ready now
        function lateRender() {
                setTimeout(function() { // IE7 needs this so dimensions are calculated correctly
                        if (!currentView.start && bodyVisible()) { // !currentView.start makes sure this never happens more than once
                                renderView();
                        }
                },0);
        }
        
        
        function destroy() {
                $(window).unbind('resize', windowResize);
                header.destroy();
                content.remove();
                element.removeClass('fc fc-rtl ui-widget');
        }
        
        
        
        function elementVisible() {
                return _element.offsetWidth !== 0;
        }
        
        
        function bodyVisible() {
                return $('body')[0].offsetWidth !== 0;
        }
        
        
        
        /* View Rendering
        -----------------------------------------------------------------------------*/
        
        // TODO: improve view switching (still weird transition in IE, and FF has whiteout problem)
        
        function changeView(newViewName) {
                if (!currentView || newViewName != currentView.name) {
                        ignoreWindowResize++; // because setMinHeight might change the height before render (and subsequently setSize) is reached

                        unselect();
                        
                        var oldView = currentView;
                        var newViewElement;
                                
                        if (oldView) {
                                (oldView.beforeHide || noop)(); // called before changing min-height. if called after, scroll state is reset (in Opera)
                                setMinHeight(content, content.height());
                                oldView.element.hide();
                        }else{
                                setMinHeight(content, 1); // needs to be 1 (not 0) for IE7, or else view dimensions miscalculated
                        }
                        content.css('overflow', 'hidden');
                        
                        currentView = viewInstances[newViewName];
                        if (currentView) {
                                currentView.element.show();
                        }else{
                                currentView = viewInstances[newViewName] = new fcViews[newViewName](
                                        newViewElement = absoluteViewElement =
                                                $("<div class='fc-view fc-view-" + newViewName + "' style='position:absolute'/>")
                                                        .appendTo(content),
                                        t // the calendar object
                                );
                        }
                        
                        if (oldView) {
                                header.deactivateButton(oldView.name);
                        }
                        header.activateButton(newViewName);
                        
                        renderView(); // after height has been set, will make absoluteViewElement's position=relative, then set to null
                        
                        content.css('overflow', '');
                        if (oldView) {
                                setMinHeight(content, 1);
                        }
                        
                        if (!newViewElement) {
                                (currentView.afterShow || noop)(); // called after setting min-height/overflow, so in final scroll state (for Opera)
                        }
                        
                        ignoreWindowResize--;
                }
        }
        
        
        
        function renderView(inc) {
                if (elementVisible()) {
                        ignoreWindowResize++; // because renderEvents might temporarily change the height before setSize is reached

                        unselect();
                        
                        if (suggestedViewHeight === undefined) {
                                calcSize();
                        }
                        
                        var forceEventRender = false;
                        if (!currentView.start || inc || date < currentView.start || date >= currentView.end) {
                                // view must render an entire new date range (and refetch/render events)
                                currentView.render(date, inc || 0); // responsible for clearing events
                                setSize(true);
                                forceEventRender = true;
                        }
                        else if (currentView.sizeDirty) {
                                // view must resize (and rerender events)
                                currentView.clearEvents();
                                setSize();
                                forceEventRender = true;
                        }
                        else if (currentView.eventsDirty) {
                                currentView.clearEvents();
                                forceEventRender = true;
                        }
                        currentView.sizeDirty = false;
                        currentView.eventsDirty = false;
                        updateEvents(forceEventRender);
                        
                        elementOuterWidth = element.outerWidth();
                        
                        header.updateTitle(currentView.title);
                        var today = new Date();
                        if (today >= currentView.start && today < currentView.end) {
                                header.disableButton('today');
                        }else{
                                header.enableButton('today');
                        }
                        
                        ignoreWindowResize--;
                        currentView.trigger('viewDisplay', _element);
                }
        }
        
        
        
        /* Resizing
        -----------------------------------------------------------------------------*/
        
        
        function updateSize() {
                markSizesDirty();
                if (elementVisible()) {
                        calcSize();
                        setSize();
                        unselect();
                        currentView.clearEvents();
                        currentView.renderEvents(events);
                        currentView.sizeDirty = false;
                }
        }
        
        
        function markSizesDirty() {
                $.each(viewInstances, function(i, inst) {
                        inst.sizeDirty = true;
                });
        }
        
        
        function calcSize() {
                if (options.contentHeight) {
                        suggestedViewHeight = options.contentHeight;
                }
                else if (options.height) {
                        suggestedViewHeight = options.height - (headerElement ? headerElement.height() : 0) - vsides(content);
                }
                else {
                        suggestedViewHeight = Math.round(content.width() / Math.max(options.aspectRatio, .5));
                }
        }
        
        
        function setSize(dateChanged) { // todo: dateChanged?
                ignoreWindowResize++;
                currentView.setHeight(suggestedViewHeight, dateChanged);
                if (absoluteViewElement) {
                        absoluteViewElement.css('position', 'relative');
                        absoluteViewElement = null;
                }
                currentView.setWidth(content.width(), dateChanged);
                ignoreWindowResize--;
        }
        
        
        function windowResize() {
                if (!ignoreWindowResize) {
                        if (currentView.start) { // view has already been rendered
                                var uid = ++resizeUID;
                                setTimeout(function() { // add a delay
                                        if (uid == resizeUID && !ignoreWindowResize && elementVisible()) {
                                                if (elementOuterWidth != (elementOuterWidth = element.outerWidth())) {
                                                        ignoreWindowResize++; // in case the windowResize callback changes the height
                                                        updateSize();
                                                        currentView.trigger('windowResize', _element);
                                                        ignoreWindowResize--;
                                                }
                                        }
                                }, 200);
                        }else{
                                // calendar must have been initialized in a 0x0 iframe that has just been resized
                                lateRender();
                        }
                }
        }
        
        
        
        /* Event Fetching/Rendering
        -----------------------------------------------------------------------------*/
        
        
        // fetches events if necessary, rerenders events if necessary (or if forced)
        function updateEvents(forceRender) {
                if (!options.lazyFetching || isFetchNeeded(currentView.visStart, currentView.visEnd)) {
                        refetchEvents();
                }
                else if (forceRender) {
                        rerenderEvents();
                }
        }
        
        
        function refetchEvents() {
                fetchEvents(currentView.visStart, currentView.visEnd); // will call reportEvents
        }
        
        
        // called when event data arrives
        function reportEvents(_events) {
                events = _events;
                rerenderEvents();
        }
        
        
        // called when a single event's data has been changed
        function reportEventChange(eventID) {
                rerenderEvents(eventID);
        }
        
        
        // attempts to rerenderEvents
        function rerenderEvents(modifiedEventID) {
                markEventsDirty();
                if (elementVisible()) {
                        currentView.clearEvents();
                        currentView.renderEvents(events, modifiedEventID);
                        currentView.eventsDirty = false;
                }
        }
        
        
        function markEventsDirty() {
                $.each(viewInstances, function(i, inst) {
                        inst.eventsDirty = true;
                });
        }
        


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

        function select(start, end, allDay) {
                currentView.select(start, end, allDay===undefined ? true : allDay);
        }
        

        function unselect() { // safe to be called before renderView
                if (currentView) {
                        currentView.unselect();
                }
        }
        
        
        
        /* Date
        -----------------------------------------------------------------------------*/
        
        
        function prev() {
                renderView(-1);
        }
        
        
        function next() {
                renderView(1);
        }
        
        
        function prevYear() {
                addYears(date, -1);
                renderView();
        }
        
        
        function nextYear() {
                addYears(date, 1);
                renderView();
        }
        
        
        function today() {
                date = new Date();
                renderView();
        }
        
        
        function gotoDate(year, month, dateOfMonth) {
                if (year instanceof Date) {
                        date = cloneDate(year); // provided 1 argument, a Date
                }else{
                        setYMD(date, year, month, dateOfMonth);
                }
                renderView();
        }
        
        
        function incrementDate(years, months, days) {
                if (years !== undefined) {
                        addYears(date, years);
                }
                if (months !== undefined) {
                        addMonths(date, months);
                }
                if (days !== undefined) {
                        addDays(date, days);
                }
                renderView();
        }
        
        
        function getDate() {
                return cloneDate(date);
        }
        
        
        
        /* Misc
        -----------------------------------------------------------------------------*/
        
        
        function getView() {
                return currentView;
        }
        
        
        function option(name, value) {
                if (value === undefined) {
                        return options[name];
                }
                if (name == 'height' || name == 'contentHeight' || name == 'aspectRatio') {
                        options[name] = value;
                        updateSize();
                }
        }
        
        
        function trigger(name, thisObj) {
                if (options[name]) {
                        return options[name].apply(
                                thisObj || _element,
                                Array.prototype.slice.call(arguments, 2)
                        );
                }
        }
        
        
        
        /* External Dragging
        ------------------------------------------------------------------------*/
        
        if (options.droppable) {
                $(document)
                        .bind('dragstart', function(ev, ui) {
                                var _e = ev.target;
                                var e = $(_e);
                                if (!e.parents('.fc').length) { // not already inside a calendar
                                        var accept = options.dropAccept;
                                        if ($.isFunction(accept) ? accept.call(_e, e) : e.is(accept)) {
                                                _dragElement = _e;
                                                currentView.dragStart(_dragElement, ev, ui);
                                        }
                                }
                        })
                        .bind('dragstop', function(ev, ui) {
                                if (_dragElement) {
                                        currentView.dragStop(_dragElement, ev, ui);
                                        _dragElement = null;
                                }
                        });
        }
        

}

function Header(calendar, options) {
        var t = this;
        
        
        // exports
        t.render = render;
        t.destroy = destroy;
        t.updateTitle = updateTitle;
        t.activateButton = activateButton;
        t.deactivateButton = deactivateButton;
        t.disableButton = disableButton;
        t.enableButton = enableButton;
        
        
        // locals
        var element = $([]);
        var tm;
        


        function render() {
                tm = options.theme ? 'ui' : 'fc';
                var sections = options.header;
                if (sections) {
                        element = $("<table class='fc-header' style='width:100%'/>")
                                .append(
                                        $("<tr/>")
                                                .append(renderSection('left'))
                                                .append(renderSection('center'))
                                                .append(renderSection('right'))
                                );
                        return element;
                }
        }
        
        
        function destroy() {
                element.remove();
        }
        
        
        function renderSection(position) {
                var e = $("<td class='fc-header-" + position + "'/>");
                var buttonStr = options.header[position];
                if (buttonStr) {
                        $.each(buttonStr.split(' '), function(i) {
                                if (i > 0) {
                                        e.append("<span class='fc-header-space'/>");
                                }
                                var prevButton;
                                $.each(this.split(','), function(j, buttonName) {
                                        if (buttonName == 'title') {
                                                e.append("<span class='fc-header-title'><h2>&nbsp;</h2></span>");
                                                if (prevButton) {
                                                        prevButton.addClass(tm + '-corner-right');
                                                }
                                                prevButton = null;
                                        }else{
                                                var buttonClick;
                                                if (calendar[buttonName]) {
                                                        buttonClick = calendar[buttonName]; // calendar method
                                                }
                                                else if (fcViews[buttonName]) {
                                                        buttonClick = function() {
                                                                button.removeClass(tm + '-state-hover'); // forget why
                                                                calendar.changeView(buttonName);
                                                        };
                                                }
                                                if (buttonClick) {
                                                        var icon = options.theme ? smartProperty(options.buttonIcons, buttonName) : null; // why are we using smartProperty here?
                                                        var text = smartProperty(options.buttonText, buttonName); // why are we using smartProperty here?
                                                        var button = $(
                                                                "<span class='fc-button fc-button-" + buttonName + " " + tm + "-state-default'>" +
                                                                        "<span class='fc-button-inner'>" +
                                                                                "<span class='fc-button-content'>" +
                                                                                        (icon ?
                                                                                                "<span class='fc-icon-wrap'>" +
                                                                                                        "<span class='ui-icon ui-icon-" + icon + "'/>" +
                                                                                                "</span>" :
                                                                                                text
                                                                                                ) +
                                                                                "</span>" +
                                                                                "<span class='fc-button-effect'><span></span></span>" +
                                                                        "</span>" +
                                                                "</span>"
                                                        );
                                                        if (button) {
                                                                button
                                                                        .click(function() {
                                                                                if (!button.hasClass(tm + '-state-disabled')) {
                                                                                        buttonClick();
                                                                                }
                                                                        })
                                                                        .mousedown(function() {
                                                                                button
                                                                                        .not('.' + tm + '-state-active')
                                                                                        .not('.' + tm + '-state-disabled')
                                                                                        .addClass(tm + '-state-down');
                                                                        })
                                                                        .mouseup(function() {
                                                                                button.removeClass(tm + '-state-down');
                                                                        })
                                                                        .hover(
                                                                                function() {
                                                                                        button
                                                                                                .not('.' + tm + '-state-active')
                                                                                                .not('.' + tm + '-state-disabled')
                                                                                                .addClass(tm + '-state-hover');
                                                                                },
                                                                                function() {
                                                                                        button
                                                                                                .removeClass(tm + '-state-hover')
                                                                                                .removeClass(tm + '-state-down');
                                                                                }
                                                                        )
                                                                        .appendTo(e);
                                                                if (!prevButton) {
                                                                        button.addClass(tm + '-corner-left');
                                                                }
                                                                prevButton = button;
                                                        }
                                                }
                                        }
                                });
                                if (prevButton) {
                                        prevButton.addClass(tm + '-corner-right');
                                }
                        });
                }
                return e;
        }
        
        
        function updateTitle(html) {
                element.find('h2')
                        .html(html);
        }
        
        
        function activateButton(buttonName) {
                element.find('span.fc-button-' + buttonName)
                        .addClass(tm + '-state-active');
        }
        
        
        function deactivateButton(buttonName) {
                element.find('span.fc-button-' + buttonName)
                        .removeClass(tm + '-state-active');
        }
        
        
        function disableButton(buttonName) {
                element.find('span.fc-button-' + buttonName)
                        .addClass(tm + '-state-disabled');
        }
        
        
        function enableButton(buttonName) {
                element.find('span.fc-button-' + buttonName)
                        .removeClass(tm + '-state-disabled');
        }


}

fc.sourceNormalizers = [];
fc.sourceFetchers = [];

var ajaxDefaults = {
        dataType: 'json',
        cache: false
};

var eventGUID = 1;


function EventManager(options, _sources) {
        var t = this;
        
        
        // exports
        t.isFetchNeeded = isFetchNeeded;
        t.fetchEvents = fetchEvents;
        t.addEventSource = addEventSource;
        t.removeEventSource = removeEventSource;
        t.updateEvent = updateEvent;
        t.renderEvent = renderEvent;
        t.removeEvents = removeEvents;
        t.clientEvents = clientEvents;
        t.normalizeEvent = normalizeEvent;
        
        
        // imports
        var trigger = t.trigger;
        var getView = t.getView;
        var reportEvents = t.reportEvents;
        
        
        // locals
        var stickySource = { events: [] };
        var sources = [ stickySource ];
        var rangeStart, rangeEnd;
        var currentFetchID = 0;
        var pendingSourceCnt = 0;
        var loadingLevel = 0;
        var cache = [];
        
        
        for (var i=0; i<_sources.length; i++) {
                _addEventSource(_sources[i]);
        }
        
        
        
        /* Fetching
        -----------------------------------------------------------------------------*/
        
        
        function isFetchNeeded(start, end) {
                return !rangeStart || start < rangeStart || end > rangeEnd;
        }
        
        
        function fetchEvents(start, end) {
                rangeStart = start;
                rangeEnd = end;
                cache = [];
                var fetchID = ++currentFetchID;
                var len = sources.length;
                pendingSourceCnt = len;
                for (var i=0; i<len; i++) {
                        fetchEventSource(sources[i], fetchID);
                }
        }
        
        
        function fetchEventSource(source, fetchID) {
                _fetchEventSource(source, function(events) {
                        if (fetchID == currentFetchID) {
                                if (events) {
                                        for (var i=0; i<events.length; i++) {
                                                events[i].source = source;
                                                normalizeEvent(events[i]);
                                        }
                                        cache = cache.concat(events);
                                }
                                pendingSourceCnt--;
                                if (!pendingSourceCnt) {
                                        reportEvents(cache);
                                }
                        }
                });
        }
        
        
        function _fetchEventSource(source, callback) {
                var i;
                var fetchers = fc.sourceFetchers;
                var res;
                for (i=0; i<fetchers.length; i++) {
                        res = fetchers[i](source, rangeStart, rangeEnd, callback);
                        if (res === true) {
                                // the fetcher is in charge. made its own async request
                                return;
                        }
                        else if (typeof res == 'object') {
                                // the fetcher returned a new source. process it
                                _fetchEventSource(res, callback);
                                return;
                        }
                }
                var events = source.events;
                if (events) {
                        if ($.isFunction(events)) {
                                pushLoading();
                                events(cloneDate(rangeStart), cloneDate(rangeEnd), function(events) {
                                        callback(events);
                                        popLoading();
                                });
                        }
                        else if ($.isArray(events)) {
                                callback(events);
                        }
                        else {
                                callback();
                        }
                }else{
                        var url = source.url;
                        if (url) {
                                var success = source.success;
                                var error = source.error;
                                var complete = source.complete;
                                var data = $.extend({}, source.data || {});
                                var startParam = firstDefined(source.startParam, options.startParam);
                                var endParam = firstDefined(source.endParam, options.endParam);
                                if (startParam) {
                                        data[startParam] = Math.round(+rangeStart / 1000);
                                }
                                if (endParam) {
                                        data[endParam] = Math.round(+rangeEnd / 1000);
                                }
                                pushLoading();
                                $.ajax($.extend({}, ajaxDefaults, source, {
                                        data: data,
                                        success: function(events) {
                                                events = events || [];
                                                var res = applyAll(success, this, arguments);
                                                if ($.isArray(res)) {
                                                        events = res;
                                                }
                                                callback(events);
                                        },
                                        error: function() {
                                                applyAll(error, this, arguments);
                                                callback();
                                        },
                                        complete: function() {
                                                applyAll(complete, this, arguments);
                                                popLoading();
                                        }
                                }));
                        }else{
                                callback();
                        }
                }
        }
        
        
        
        /* Sources
        -----------------------------------------------------------------------------*/
        

        function addEventSource(source) {
                source = _addEventSource(source);
                if (source) {
                        pendingSourceCnt++;
                        fetchEventSource(source, currentFetchID); // will eventually call reportEvents
                }
        }
        
        
        function _addEventSource(source) {
                if ($.isFunction(source) || $.isArray(source)) {
                        source = { events: source };
                }
                else if (typeof source == 'string') {
                        source = { url: source };
                }
                if (typeof source == 'object') {
                        normalizeSource(source);
                        sources.push(source);
                        return source;
                }
        }
        

        function removeEventSource(source) {
                sources = $.grep(sources, function(src) {
                        return !isSourcesEqual(src, source);
                });
                // remove all client events from that source
                cache = $.grep(cache, function(e) {
                        return !isSourcesEqual(e.source, source);
                });
                reportEvents(cache);
        }
        
        
        
        /* Manipulation
        -----------------------------------------------------------------------------*/
        
        
        function updateEvent(event) { // update an existing event
                var i, len = cache.length, e,
                        defaultEventEnd = getView().defaultEventEnd, // getView???
                        startDelta = event.start - event._start,
                        endDelta = event.end ?
                                (event.end - (event._end || defaultEventEnd(event))) // event._end would be null if event.end
                                : 0;                                                      // was null and event was just resized
                for (i=0; i<len; i++) {
                        e = cache[i];
                        if (e._id == event._id && e != event) {
                                e.start = new Date(+e.start + startDelta);
                                if (event.end) {
                                        if (e.end) {
                                                e.end = new Date(+e.end + endDelta);
                                        }else{
                                                e.end = new Date(+defaultEventEnd(e) + endDelta);
                                        }
                                }else{
                                        e.end = null;
                                }
                                e.title = event.title;
                                e.url = event.url;
                                e.allDay = event.allDay;
                                e.className = event.className;
                                e.editable = event.editable;
                                e.color = event.color;
                                e.backgroudColor = event.backgroudColor;
                                e.borderColor = event.borderColor;
                                e.textColor = event.textColor;
                                normalizeEvent(e);
                        }
                }
                normalizeEvent(event);
                reportEvents(cache);
        }
        
        
        function renderEvent(event, stick) {
                normalizeEvent(event);
                if (!event.source) {
                        if (stick) {
                                stickySource.events.push(event);
                                event.source = stickySource;
                        }
                        cache.push(event);
                }
                reportEvents(cache);
        }
        
        
        function removeEvents(filter) {
                if (!filter) { // remove all
                        cache = [];
                        // clear all array sources
                        for (var i=0; i<sources.length; i++) {
                                if ($.isArray(sources[i].events)) {
                                        sources[i].events = [];
                                }
                        }
                }else{
                        if (!$.isFunction(filter)) { // an event ID
                                var id = filter + '';
                                filter = function(e) {
                                        return e._id == id;
                                };
                        }
                        cache = $.grep(cache, filter, true);
                        // remove events from array sources
                        for (var i=0; i<sources.length; i++) {
                                if ($.isArray(sources[i].events)) {
                                        sources[i].events = $.grep(sources[i].events, filter, true);
                                }
                        }
                }
                reportEvents(cache);
        }
        
        
        function clientEvents(filter) {
                if ($.isFunction(filter)) {
                        return $.grep(cache, filter);
                }
                else if (filter) { // an event ID
                        filter += '';
                        return $.grep(cache, function(e) {
                                return e._id == filter;
                        });
                }
                return cache; // else, return all
        }
        
        
        
        /* Loading State
        -----------------------------------------------------------------------------*/
        
        
        function pushLoading() {
                if (!loadingLevel++) {
                        trigger('loading', null, true);
                }
        }
        
        
        function popLoading() {
                if (!--loadingLevel) {
                        trigger('loading', null, false);
                }
        }
        
        
        
        /* Event Normalization
        -----------------------------------------------------------------------------*/
        
        
        function normalizeEvent(event) {
                var source = event.source || {};
                var ignoreTimezone = firstDefined(source.ignoreTimezone, options.ignoreTimezone);
                event._id = event._id || (event.id === undefined ? '_fc' + eventGUID++ : event.id + '');
                if (event.date) {
                        if (!event.start) {
                                event.start = event.date;
                        }
                        delete event.date;
                }
                event._start = cloneDate(event.start = parseDate(event.start, ignoreTimezone));
                event.end = parseDate(event.end, ignoreTimezone);
                if (event.end && event.end <= event.start) {
                        event.end = null;
                }
                event._end = event.end ? cloneDate(event.end) : null;
                if (event.allDay === undefined) {
                        event.allDay = firstDefined(source.allDayDefault, options.allDayDefault);
                }
                if (event.className) {
                        if (typeof event.className == 'string') {
                                event.className = event.className.split(/\s+/);
                        }
                }else{
                        event.className = [];
                }
                // TODO: if there is no start date, return false to indicate an invalid event
        }
        
        
        
        /* Utils
        ------------------------------------------------------------------------------*/
        
        
        function normalizeSource(source) {
                if (source.className) {
                        // TODO: repeat code, same code for event classNames
                        if (typeof source.className == 'string') {
                                source.className = source.className.split(/\s+/);
                        }
                }else{
                        source.className = [];
                }
                var normalizers = fc.sourceNormalizers;
                for (var i=0; i<normalizers.length; i++) {
                        normalizers[i](source);
                }
        }
        
        
        function isSourcesEqual(source1, source2) {
                return source1 && source2 && getSourcePrimitive(source1) == getSourcePrimitive(source2);
        }
        
        
        function getSourcePrimitive(source) {
                return ((typeof source == 'object') ? (source.events || source.url) : '') || source;
        }


}


fc.addDays = addDays;
fc.cloneDate = cloneDate;
fc.parseDate = parseDate;
fc.parseISO8601 = parseISO8601;
fc.parseTime = parseTime;
fc.formatDate = formatDate;
fc.formatDates = formatDates;



/* Date Math
-----------------------------------------------------------------------------*/

var dayIDs = ['sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat'],
        DAY_MS = 86400000,
        HOUR_MS = 3600000,
        MINUTE_MS = 60000;
        

function addYears(d, n, keepTime) {
        d.setFullYear(d.getFullYear() + n);
        if (!keepTime) {
                clearTime(d);
        }
        return d;
}


function addMonths(d, n, keepTime) { // prevents day overflow/underflow
        if (+d) { // prevent infinite looping on invalid dates
                var m = d.getMonth() + n,
                        check = cloneDate(d);
                check.setDate(1);
                check.setMonth(m);
                d.setMonth(m);
                if (!keepTime) {
                        clearTime(d);
                }
                while (d.getMonth() != check.getMonth()) {
                        d.setDate(d.getDate() + (d < check ? 1 : -1));
                }
        }
        return d;
}


function addDays(d, n, keepTime) { // deals with daylight savings
        if (+d) {
                var dd = d.getDate() + n,
                        check = cloneDate(d);
                check.setHours(9); // set to middle of day
                check.setDate(dd);
                d.setDate(dd);
                if (!keepTime) {
                        clearTime(d);
                }
                fixDate(d, check);
        }
        return d;
}


function fixDate(d, check) { // force d to be on check's YMD, for daylight savings purposes
        if (+d) { // prevent infinite looping on invalid dates
                while (d.getDate() != check.getDate()) {
                        d.setTime(+d + (d < check ? 1 : -1) * HOUR_MS);
                }
        }
}


function addMinutes(d, n) {
        d.setMinutes(d.getMinutes() + n);
        return d;
}


function clearTime(d) {
        d.setHours(0);
        d.setMinutes(0);
        d.setSeconds(0); 
        d.setMilliseconds(0);
        return d;
}


function cloneDate(d, dontKeepTime) {
        if (dontKeepTime) {
                return clearTime(new Date(+d));
        }
        return new Date(+d);
}


function zeroDate() { // returns a Date with time 00:00:00 and dateOfMonth=1
        var i=0, d;
        do {
                d = new Date(1970, i++, 1);
        } while (d.getHours()); // != 0
        return d;
}


function skipWeekend(date, inc, excl) {
        inc = inc || 1;
        while (!date.getDay() || (excl && date.getDay()==1 || !excl && date.getDay()==6)) {
                addDays(date, inc);
        }
        return date;
}


function dayDiff(d1, d2) { // d1 - d2
        return Math.round((cloneDate(d1, true) - cloneDate(d2, true)) / DAY_MS);
}


function setYMD(date, y, m, d) {
        if (y !== undefined && y != date.getFullYear()) {
                date.setDate(1);
                date.setMonth(0);
                date.setFullYear(y);
        }
        if (m !== undefined && m != date.getMonth()) {
                date.setDate(1);
                date.setMonth(m);
        }
        if (d !== undefined) {
                date.setDate(d);
        }
}



/* Date Parsing
-----------------------------------------------------------------------------*/


function parseDate(s, ignoreTimezone) { // ignoreTimezone defaults to true
        if (typeof s == 'object') { // already a Date object
                return s;
        }
        if (typeof s == 'number') { // a UNIX timestamp
                return new Date(s * 1000);
        }
        if (typeof s == 'string') {
                if (s.match(/^\d+(\.\d+)?$/)) { // a UNIX timestamp
                        return new Date(parseFloat(s) * 1000);
                }
                if (ignoreTimezone === undefined) {
                        ignoreTimezone = true;
                }
                return parseISO8601(s, ignoreTimezone) || (s ? new Date(s) : null);
        }
        // TODO: never return invalid dates (like from new Date(<string>)), return null instead
        return null;
}


function parseISO8601(s, ignoreTimezone) { // ignoreTimezone defaults to false
        // derived from http://delete.me.uk/2005/03/iso8601.html
        // TODO: for a know glitch/feature, read tests/issue_206_parseDate_dst.html
        var m = s.match(/^([0-9]{4})(-([0-9]{2})(-([0-9]{2})([T ]([0-9]{2}):([0-9]{2})(:([0-9]{2})(\.([0-9]+))?)?(Z|(([-+])([0-9]{2})(:?([0-9]{2}))?))?)?)?)?$/);
        if (!m) {
                return null;
        }
        var date = new Date(m[1], 0, 1);
        if (ignoreTimezone || !m[13]) {
                var check = new Date(m[1], 0, 1, 9, 0);
                if (m[3]) {
                        date.setMonth(m[3] - 1);
                        check.setMonth(m[3] - 1);
                }
                if (m[5]) {
                        date.setDate(m[5]);
                        check.setDate(m[5]);
                }
                fixDate(date, check);
                if (m[7]) {
                        date.setHours(m[7]);
                }
                if (m[8]) {
                        date.setMinutes(m[8]);
                }
                if (m[10]) {
                        date.setSeconds(m[10]);
                }
                if (m[12]) {
                        date.setMilliseconds(Number("0." + m[12]) * 1000);
                }
                fixDate(date, check);
        }else{
                date.setUTCFullYear(
                        m[1],
                        m[3] ? m[3] - 1 : 0,
                        m[5] || 1
                );
                date.setUTCHours(
                        m[7] || 0,
                        m[8] || 0,
                        m[10] || 0,
                        m[12] ? Number("0." + m[12]) * 1000 : 0
                );
                if (m[14]) {
                        var offset = Number(m[16]) * 60 + (m[18] ? Number(m[18]) : 0);
                        offset *= m[15] == '-' ? 1 : -1;
                        date = new Date(+date + (offset * 60 * 1000));
                }
        }
        return date;
}


function parseTime(s) { // returns minutes since start of day
        if (typeof s == 'number') { // an hour
                return s * 60;
        }
        if (typeof s == 'object') { // a Date object
                return s.getHours() * 60 + s.getMinutes();
        }
        var m = s.match(/(\d+)(?::(\d+))?\s*(\w+)?/);
        if (m) {
                var h = parseInt(m[1], 10);
                if (m[3]) {
                        h %= 12;
                        if (m[3].toLowerCase().charAt(0) == 'p') {
                                h += 12;
                        }
                }
                return h * 60 + (m[2] ? parseInt(m[2], 10) : 0);
        }
}



/* Date Formatting
-----------------------------------------------------------------------------*/
// TODO: use same function formatDate(date, [date2], format, [options])


function formatDate(date, format, options) {
        return formatDates(date, null, format, options);
}


function formatDates(date1, date2, format, options) {
        options = options || defaults;
        var date = date1,
                otherDate = date2,
                i, len = format.length, c,
                i2, formatter,
                res = '';
        for (i=0; i<len; i++) {
                c = format.charAt(i);
                if (c == "'") {
                        for (i2=i+1; i2<len; i2++) {
                                if (format.charAt(i2) == "'") {
                                        if (date) {
                                                if (i2 == i+1) {
                                                        res += "'";
                                                }else{
                                                        res += format.substring(i+1, i2);
                                                }
                                                i = i2;
                                        }
                                        break;
                                }
                        }
                }
                else if (c == '(') {
                        for (i2=i+1; i2<len; i2++) {
                                if (format.charAt(i2) == ')') {
                                        var subres = formatDate(date, format.substring(i+1, i2), options);
                                        if (parseInt(subres.replace(/\D/, ''), 10)) {
                                                res += subres;
                                        }
                                        i = i2;
                                        break;
                                }
                        }
                }
                else if (c == '[') {
                        for (i2=i+1; i2<len; i2++) {
                                if (format.charAt(i2) == ']') {
                                        var subformat = format.substring(i+1, i2);
                                        var subres = formatDate(date, subformat, options);
                                        if (subres != formatDate(otherDate, subformat, options)) {
                                                res += subres;
                                        }
                                        i = i2;
                                        break;
                                }
                        }
                }
                else if (c == '{') {
                        date = date2;
                        otherDate = date1;
                }
                else if (c == '}') {
                        date = date1;
                        otherDate = date2;
                }
                else {
                        for (i2=len; i2>i; i2--) {
                                if (formatter = dateFormatters[format.substring(i, i2)]) {
                                        if (date) {
                                                res += formatter(date, options);
                                        }
                                        i = i2 - 1;
                                        break;
                                }
                        }
                        if (i2 == i) {
                                if (date) {
                                        res += c;
                                }
                        }
                }
        }
        return res;
};


var dateFormatters = {
        s       : function(d)   { return d.getSeconds() },
        ss      : function(d)   { return zeroPad(d.getSeconds()) },
        m       : function(d)   { return d.getMinutes() },
        mm      : function(d)   { return zeroPad(d.getMinutes()) },
        h       : function(d)   { return d.getHours() % 12 || 12 },
        hh      : function(d)   { return zeroPad(d.getHours() % 12 || 12) },
        H       : function(d)   { return d.getHours() },
        HH      : function(d)   { return zeroPad(d.getHours()) },
        d       : function(d)   { return d.getDate() },
        dd      : function(d)   { return zeroPad(d.getDate()) },
        ddd     : function(d,o) { return o.dayNamesShort[d.getDay()] },
        dddd: function(d,o)     { return o.dayNames[d.getDay()] },
        M       : function(d)   { return d.getMonth() + 1 },
        MM      : function(d)   { return zeroPad(d.getMonth() + 1) },
        MMM     : function(d,o) { return o.monthNamesShort[d.getMonth()] },
        MMMM: function(d,o)     { return o.monthNames[d.getMonth()] },
        yy      : function(d)   { return (d.getFullYear()+'').substring(2) },
        yyyy: function(d)       { return d.getFullYear() },
        t       : function(d)   { return d.getHours() < 12 ? 'a' : 'p' },
        tt      : function(d)   { return d.getHours() < 12 ? 'am' : 'pm' },
        T       : function(d)   { return d.getHours() < 12 ? 'A' : 'P' },
        TT      : function(d)   { return d.getHours() < 12 ? 'AM' : 'PM' },
        u       : function(d)   { return formatDate(d, "yyyy-MM-dd'T'HH:mm:ss'Z'") },
        S       : function(d)   {
                var date = d.getDate();
                if (date > 10 && date < 20) {
                        return 'th';
                }
                return ['st', 'nd', 'rd'][date%10-1] || 'th';
        }
};



fc.applyAll = applyAll;


/* Event Date Math
-----------------------------------------------------------------------------*/


function exclEndDay(event) {
        if (event.end) {
                return _exclEndDay(event.end, event.allDay);
        }else{
                return addDays(cloneDate(event.start), 1);
        }
}


function _exclEndDay(end, allDay) {
        end = cloneDate(end);
        return allDay || end.getHours() || end.getMinutes() ? addDays(end, 1) : clearTime(end);
}


function segCmp(a, b) {
        return (b.msLength - a.msLength) * 100 + (a.event.start - b.event.start);
}


function segsCollide(seg1, seg2) {
        return seg1.end > seg2.start && seg1.start < seg2.end;
}



/* Event Sorting
-----------------------------------------------------------------------------*/


// event rendering utilities
function sliceSegs(events, visEventEnds, start, end) {
        var segs = [],
                i, len=events.length, event,
                eventStart, eventEnd,
                segStart, segEnd,
                isStart, isEnd;
        for (i=0; i<len; i++) {
                event = events[i];
                eventStart = event.start;
                eventEnd = visEventEnds[i];
                if (eventEnd > start && eventStart < end) {
                        if (eventStart < start) {
                                segStart = cloneDate(start);
                                isStart = false;
                        }else{
                                segStart = eventStart;
                                isStart = true;
                        }
                        if (eventEnd > end) {
                                segEnd = cloneDate(end);
                                isEnd = false;
                        }else{
                                segEnd = eventEnd;
                                isEnd = true;
                        }
                        segs.push({
                                event: event,
                                start: segStart,
                                end: segEnd,
                                isStart: isStart,
                                isEnd: isEnd,
                                msLength: segEnd - segStart
                        });
                }
        }
        return segs.sort(segCmp);
}


// event rendering calculation utilities
function stackSegs(segs) {
        var levels = [],
                i, len = segs.length, seg,
                j, collide, k;
        for (i=0; i<len; i++) {
                seg = segs[i];
                j = 0; // the level index where seg should belong
                while (true) {
                        collide = false;
                        if (levels[j]) {
                                for (k=0; k<levels[j].length; k++) {
                                        if (segsCollide(levels[j][k], seg)) {
                                                collide = true;
                                                break;
                                        }
                                }
                        }
                        if (collide) {
                                j++;
                        }else{
                                break;
                        }
                }
                if (levels[j]) {
                        levels[j].push(seg);
                }else{
                        levels[j] = [seg];
                }
        }
        return levels;
}



/* Event Element Binding
-----------------------------------------------------------------------------*/


function lazySegBind(container, segs, bindHandlers) {
        container.unbind('mouseover').mouseover(function(ev) {
                var parent=ev.target, e,
                        i, seg;
                while (parent != this) {
                        e = parent;
                        parent = parent.parentNode;
                }
                if ((i = e._fci) !== undefined) {
                        e._fci = undefined;
                        seg = segs[i];
                        bindHandlers(seg.event, seg.element, seg);
                        $(ev.target).trigger(ev);
                }
                ev.stopPropagation();
        });
}



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


function setOuterWidth(element, width, includeMargins) {
        for (var i=0, e; i<element.length; i++) {
                e = $(element[i]);
                e.width(Math.max(0, width - hsides(e, includeMargins)));
        }
}


function setOuterHeight(element, height, includeMargins) {
        for (var i=0, e; i<element.length; i++) {
                e = $(element[i]);
                e.height(Math.max(0, height - vsides(e, includeMargins)));
        }
}


function hsides(element, includeMargins) {
        return hpadding(element) + hborders(element) + (includeMargins ? hmargins(element) : 0);
}


function hpadding(element) {
        return (parseFloat($.css(element[0], 'paddingLeft', true)) || 0) +
               (parseFloat($.css(element[0], 'paddingRight', true)) || 0);
}


function hmargins(element) {
        return (parseFloat($.css(element[0], 'marginLeft', true)) || 0) +
               (parseFloat($.css(element[0], 'marginRight', true)) || 0);
}


function hborders(element) {
        return (parseFloat($.css(element[0], 'borderLeftWidth', true)) || 0) +
               (parseFloat($.css(element[0], 'borderRightWidth', true)) || 0);
}


function vsides(element, includeMargins) {
        return vpadding(element) +  vborders(element) + (includeMargins ? vmargins(element) : 0);
}


function vpadding(element) {
        return (parseFloat($.css(element[0], 'paddingTop', true)) || 0) +
               (parseFloat($.css(element[0], 'paddingBottom', true)) || 0);
}


function vmargins(element) {
        return (parseFloat($.css(element[0], 'marginTop', true)) || 0) +
               (parseFloat($.css(element[0], 'marginBottom', true)) || 0);
}


function vborders(element) {
        return (parseFloat($.css(element[0], 'borderTopWidth', true)) || 0) +
               (parseFloat($.css(element[0], 'borderBottomWidth', true)) || 0);
}


function setMinHeight(element, height) {
        height = (typeof height == 'number' ? height + 'px' : height);
        element.each(function(i, _element) {
                _element.style.cssText += ';min-height:' + height + ';_height:' + height;
                // why can't we just use .css() ? i forget
        });
}



/* Misc Utils
-----------------------------------------------------------------------------*/


//TODO: arraySlice
//TODO: isFunction, grep ?


function noop() { }


function cmp(a, b) {
        return a - b;
}


function arrayMax(a) {
        return Math.max.apply(Math, a);
}


function zeroPad(n) {
        return (n < 10 ? '0' : '') + n;
}


function smartProperty(obj, name) { // get a camel-cased/namespaced property of an object
        if (obj[name] !== undefined) {
                return obj[name];
        }
        var parts = name.split(/(?=[A-Z])/),
                i=parts.length-1, res;
        for (; i>=0; i--) {
                res = obj[parts[i].toLowerCase()];
                if (res !== undefined) {
                        return res;
                }
        }
        return obj[''];
}


function htmlEscape(s) {
        return s.replace(/&/g, '&amp;')
                .replace(/</g, '&lt;')
                .replace(/>/g, '&gt;')
                .replace(/'/g, '&#039;')
                .replace(/"/g, '&quot;')
                .replace(/\n/g, '<br />');
}


function cssKey(_element) {
        return _element.id + '/' + _element.className + '/' + _element.style.cssText.replace(/(^|;)\s*(top|left|width|height)\s*:[^;]*/ig, '');
}


function disableTextSelection(element) {
        element
                .attr('unselectable', 'on')
                .css('MozUserSelect', 'none')
                .bind('selectstart.ui', function() { return false; });
}


/*
function enableTextSelection(element) {
        element
                .attr('unselectable', 'off')
                .css('MozUserSelect', '')
                .unbind('selectstart.ui');
}
*/


function markFirstLast(e) {
        e.children()
                .removeClass('fc-first fc-last')
                .filter(':first-child')
                        .addClass('fc-first')
                .end()
                .filter(':last-child')
                        .addClass('fc-last');
}


function setDayID(cell, date) {
        cell.each(function(i, _cell) {
                _cell.className = _cell.className.replace(/^fc-\w*/, 'fc-' + dayIDs[date.getDay()]);
                // TODO: make a way that doesn't rely on order of classes
        });
}


function getSkinCss(event, opt) {
        var source = event.source || {};
        var eventColor = event.color;
        var sourceColor = source.color;
        var optionColor = opt('eventColor');
        var backgroundColor =
                event.backgroundColor ||
                eventColor ||
                source.backgroundColor ||
                sourceColor ||
                opt('eventBackgroundColor') ||
                optionColor;
        var borderColor =
                event.borderColor ||
                eventColor ||
                source.borderColor ||
                sourceColor ||
                opt('eventBorderColor') ||
                optionColor;
        var textColor =
                event.textColor ||
                source.textColor ||
                opt('eventTextColor');
        var statements = [];
        if (backgroundColor) {
                statements.push('background-color:' + backgroundColor);
        }
        if (borderColor) {
                statements.push('border-color:' + borderColor);
        }
        if (textColor) {
                statements.push('color:' + textColor);
        }
        return statements.join(';');
}


function applyAll(functions, thisObj, args) {
        if ($.isFunction(functions)) {
                functions = [ functions ];
        }
        if (functions) {
                var i;
                var ret;
                for (i=0; i<functions.length; i++) {
                        ret = functions[i].apply(thisObj, args) || ret;
                }
                return ret;
        }
}


function firstDefined() {
        for (var i=0; i<arguments.length; i++) {
                if (arguments[i] !== undefined) {
                        return arguments[i];
                }
        }
}


fcViews.month = MonthView;

function MonthView(element, calendar) {
        var t = this;
        
        
        // exports
        t.render = render;
        
        
        // imports
        BasicView.call(t, element, calendar, 'month');
        var opt = t.opt;
        var renderBasic = t.renderBasic;
        var formatDate = calendar.formatDate;
        
        
        
        function render(date, delta) {
                if (delta) {
                        addMonths(date, delta);
                        date.setDate(1);
                }
                var start = cloneDate(date, true);
                start.setDate(1);
                var end = addMonths(cloneDate(start), 1);
                var visStart = cloneDate(start);
                var visEnd = cloneDate(end);
                var firstDay = opt('firstDay');
                var nwe = opt('weekends') ? 0 : 1;
                if (nwe) {
                        skipWeekend(visStart);
                        skipWeekend(visEnd, -1, true);
                }
                addDays(visStart, -((visStart.getDay() - Math.max(firstDay, nwe) + 7) % 7));
                addDays(visEnd, (7 - visEnd.getDay() + Math.max(firstDay, nwe)) % 7);
                var rowCnt = Math.round((visEnd - visStart) / (DAY_MS * 7));
                if (opt('weekMode') == 'fixed') {
                        addDays(visEnd, (6 - rowCnt) * 7);
                        rowCnt = 6;
                }
                t.title = formatDate(start, opt('titleFormat'));
                t.start = start;
                t.end = end;
                t.visStart = visStart;
                t.visEnd = visEnd;
                renderBasic(6, rowCnt, nwe ? 5 : 7, true);
        }
        
        
}

fcViews.basicWeek = BasicWeekView;

function BasicWeekView(element, calendar) {
        var t = this;
        
        
        // exports
        t.render = render;
        
        
        // imports
        BasicView.call(t, element, calendar, 'basicWeek');
        var opt = t.opt;
        var renderBasic = t.renderBasic;
        var formatDates = calendar.formatDates;
        
        
        
        function render(date, delta) {
                if (delta) {
                        addDays(date, delta * 7);
                }
                var start = addDays(cloneDate(date), -((date.getDay() - opt('firstDay') + 7) % 7));
                var end = addDays(cloneDate(start), 7);
                var visStart = cloneDate(start);
                var visEnd = cloneDate(end);
                var weekends = opt('weekends');
                if (!weekends) {
                        skipWeekend(visStart);
                        skipWeekend(visEnd, -1, true);
                }
                t.title = formatDates(
                        visStart,
                        addDays(cloneDate(visEnd), -1),
                        opt('titleFormat')
                );
                t.start = start;
                t.end = end;
                t.visStart = visStart;
                t.visEnd = visEnd;
                renderBasic(1, 1, weekends ? 7 : 5, false);
        }
        
        
}

fcViews.basicDay = BasicDayView;

//TODO: when calendar's date starts out on a weekend, shouldn't happen


function BasicDayView(element, calendar) {
        var t = this;
        
        
        // exports
        t.render = render;
        
        
        // imports
        BasicView.call(t, element, calendar, 'basicDay');
        var opt = t.opt;
        var renderBasic = t.renderBasic;
        var formatDate = calendar.formatDate;
        
        
        
        function render(date, delta) {
                if (delta) {
                        addDays(date, delta);
                        if (!opt('weekends')) {
                                skipWeekend(date, delta < 0 ? -1 : 1);
                        }
                }
                t.title = formatDate(date, opt('titleFormat'));
                t.start = t.visStart = cloneDate(date, true);
                t.end = t.visEnd = addDays(cloneDate(t.start), 1);
                renderBasic(1, 1, 1, false);
        }
        
        
}

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 head;
        var headCells;
        var body;
        var bodyRows;
        var bodyCells;
        var bodyFirstCells;
        var bodyCellTopInners;
        var daySegmentContainer;
        
        var viewWidth;
        var viewHeight;
        var colWidth;
        
        var rowCnt, colCnt;
        var coordinateGrid;
        var hoverListener;
        var colContentPositions;
        
        var rtl, dis, dit;
        var firstDay;
        var nwe;
        var tm;
        var colFormat;
        
        
        
        /* Rendering
        ------------------------------------------------------------*/
        
        
        disableTextSelection(element.addClass('fc-grid'));
        
        
        function renderBasic(maxr, r, c, showNumbers) {
                rowCnt = r;
                colCnt = c;
                updateOptions();
                var firstTime = !body;
                if (firstTime) {
                        buildSkeleton(maxr, showNumbers);
                }else{
                        clearEvents();
                }
                updateCells(firstTime);
        }
        
        
        
        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');
        }
        
        
        
        function buildSkeleton(maxRowCnt, showNumbers) {
                var s;
                var headerClass = tm + "-widget-header";
                var contentClass = tm + "-widget-content";
                var i, j;
                var table;
                
                s =
                        "<table class='fc-border-separate' style='width:100%' cellspacing='0'>" +
                        "<thead>" +
                        "<tr>";
                for (i=0; i<colCnt; i++) {
                        s +=
                                "<th class='fc- " + headerClass + "'/>"; // need fc- for setDayID
                }
                s +=
                        "</tr>" +
                        "</thead>" +
                        "<tbody>";
                for (i=0; i<maxRowCnt; i++) {
                        s +=
                                "<tr class='fc-week" + i + "'>";
                        for (j=0; j<colCnt; j++) {
                                s +=
                                        "<td class='fc- " + contentClass + " fc-day" + (i*colCnt+j) + "'>" + // need fc- for setDayID
                                        "<div>" +
                                        (showNumbers ?
                                                "<div class='fc-day-number'/>" :
                                                ''
                                                ) +
                                        "<div class='fc-day-content'>" +
                                        "<div style='position:relative'>&nbsp;</div>" +
                                        "</div>" +
                                        "</div>" +
                                        "</td>";
                        }
                        s +=
                                "</tr>";
                }
                s +=
                        "</tbody>" +
                        "</table>";
                table = $(s).appendTo(element);
                
                head = table.find('thead');
                headCells = head.find('th');
                body = table.find('tbody');
                bodyRows = body.find('tr');
                bodyCells = body.find('td');
                bodyFirstCells = bodyCells.filter(':first-child');
                bodyCellTopInners = bodyRows.eq(0).find('div.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'); // fc-last is done in updateCells
                
                dayBind(bodyCells);
                
                daySegmentContainer =
                        $("<div style='position:absolute;z-index:8;top:0;left:0'/>")
                                .appendTo(element);
        }
        
        
        
        function updateCells(firstTime) {
                var dowDirty = firstTime || rowCnt == 1; // could the cells' day-of-weeks need updating?
                var month = t.start.getMonth();
                var today = clearTime(new Date());
                var cell;
                var date;
                var row;
        
                if (dowDirty) {
                        headCells.each(function(i, _cell) {
                                cell = $(_cell);
                                date = indexDate(i);
                                cell.html(formatDate(date, colFormat));
                                setDayID(cell, date);
                        });
                }
                
                bodyCells.each(function(i, _cell) {
                        cell = $(_cell);
                        date = indexDate(i);
                        if (date.getMonth() == month) {
                                cell.removeClass('fc-other-month');
                        }else{
                                cell.addClass('fc-other-month');
                        }
                        if (+date == +today) {
                                cell.addClass(tm + '-state-highlight fc-today');
                        }else{
                                cell.removeClass(tm + '-state-highlight fc-today');
                        }
                        cell.find('div.fc-day-number').text(date.getDate());
                        if (dowDirty) {
                                setDayID(cell, date);
                        }
                });
                
                bodyRows.each(function(i, _row) {
                        row = $(_row);
                        if (i < rowCnt) {
                                row.show();
                                if (i == rowCnt-1) {
                                        row.addClass('fc-last');
                                }else{
                                        row.removeClass('fc-last');
                                }
                        }else{
                                row.hide();
                        }
                });
        }
        
        
        
        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)
                                );
                        }
                });
                
        }
        
        
        function setWidth(width) {
                viewWidth = width;
                colContentPositions.clear();
                colWidth = Math.floor(viewWidth / 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) {
                return {
                        left: 0,
                        right: viewWidth
                };
        }
        
        
}

function BasicEventRenderer() {
        var t = this;
        
        
        // exports
        t.renderEvents = renderEvents;
        t.compileDaySegs = compileSegs; // for DayEventRenderer
        t.clearEvents = clearEvents;
        t.bindDaySeg = bindDaySeg;
        
        
        // imports
        DayEventRenderer.call(t);
        var opt = t.opt;
        var trigger = t.trigger;
        //var setOverflowHidden = t.setOverflowHidden;
        var isEventDraggable = t.isEventDraggable;
        var isEventResizable = t.isEventResizable;
        var reportEvents = t.reportEvents;
        var reportEventClear = t.reportEventClear;
        var eventElementHandlers = t.eventElementHandlers;
        var showEvents = t.showEvents;
        var hideEvents = t.hideEvents;
        var eventDrop = t.eventDrop;
        var getDaySegmentContainer = t.getDaySegmentContainer;
        var getHoverListener = t.getHoverListener;
        var renderDayOverlay = t.renderDayOverlay;
        var clearOverlays = t.clearOverlays;
        var getRowCnt = t.getRowCnt;
        var getColCnt = t.getColCnt;
        var renderDaySegs = t.renderDaySegs;
        var resizableDayEvent = t.resizableDayEvent;
        
        
        
        /* Rendering
        --------------------------------------------------------------------*/
        
        
        function renderEvents(events, modifiedEventId) {
                reportEvents(events);
                renderDaySegs(compileSegs(events), modifiedEventId);
        }
        
        
        function clearEvents() {
                reportEventClear();
                getDaySegmentContainer().empty();
        }
        
        
        function compileSegs(events) {
                var rowCnt = getRowCnt(),
                        colCnt = getColCnt(),
                        d1 = cloneDate(t.visStart),
                        d2 = addDays(cloneDate(d1), colCnt),
                        visEventsEnds = $.map(events, exclEndDay),
                        i, row,
                        j, level,
                        k, seg,
                        segs=[];
                for (i=0; i<rowCnt; i++) {
                        row = stackSegs(sliceSegs(events, visEventsEnds, d1, d2));
                        for (j=0; j<row.length; j++) {
                                level = row[j];
                                for (k=0; k<level.length; k++) {
                                        seg = level[k];
                                        seg.row = i;
                                        seg.level = j; // not needed anymore
                                        segs.push(seg);
                                }
                        }
                        addDays(d1, 7);
                        addDays(d2, 7);
                }
                return segs;
        }
        
        
        function bindDaySeg(event, eventElement, seg) {
                if (isEventDraggable(event)) {
                        draggableDayEvent(event, eventElement);
                }
                if (seg.isEnd && isEventResizable(event)) {
                        resizableDayEvent(event, eventElement, seg);
                }
                eventElementHandlers(event, eventElement);
                        // needs to be after, because resizableDayEvent might stopImmediatePropagation on click
        }
        
        
        
        /* Dragging
        ----------------------------------------------------------------------------*/
        
        
        function draggableDayEvent(event, eventElement) {
                var hoverListener = getHoverListener();
                var dayDelta;
                eventElement.draggable({
                        zIndex: 9,
                        delay: 50,
                        opacity: opt('dragOpacity'),
                        revertDuration: opt('dragRevertDuration'),
                        start: function(ev, ui) {
                                trigger('eventDragStart', eventElement, event, ev, ui);
                                hideEvents(event, eventElement);
                                hoverListener.start(function(cell, origCell, rowDelta, colDelta) {
                                        eventElement.draggable('option', 'revert', !cell || !rowDelta && !colDelta);
                                        clearOverlays();
                                        if (cell) {
                                                //setOverflowHidden(true);
                                                dayDelta = rowDelta*7 + colDelta * (opt('isRTL') ? -1 : 1);
                                                renderDayOverlay(
                                                        addDays(cloneDate(event.start), dayDelta),
                                                        addDays(exclEndDay(event), dayDelta)
                                                );
                                        }else{
                                                //setOverflowHidden(false);
                                                dayDelta = 0;
                                        }
                                }, ev, 'drag');
                        },
                        stop: function(ev, ui) {
                                hoverListener.stop();
                                clearOverlays();
                                trigger('eventDragStop', eventElement, event, ev, ui);
                                if (dayDelta) {
                                        eventDrop(this, event, dayDelta, 0, event.allDay, ev, ui);
                                }else{
                                        eventElement.css('filter', ''); // clear IE opacity side-effects
                                        showEvents(event, eventElement);
                                }
                                //setOverflowHidden(false);
                        }
                });
        }


}

fcViews.agendaWeek = AgendaWeekView;

function AgendaWeekView(element, calendar) {
        var t = this;
        
        
        // exports
        t.render = render;
        
        
        // imports
        AgendaView.call(t, element, calendar, 'agendaWeek');
        var opt = t.opt;
        var renderAgenda = t.renderAgenda;
        var formatDates = calendar.formatDates;
        
        
        
        function render(date, delta) {
                if (delta) {
                        addDays(date, delta * 7);
                }
                var start = addDays(cloneDate(date), -((date.getDay() - opt('firstDay') + 7) % 7));
                var end = addDays(cloneDate(start), 7);
                var visStart = cloneDate(start);
                var visEnd = cloneDate(end);
                var weekends = opt('weekends');
                if (!weekends) {
                        skipWeekend(visStart);
                        skipWeekend(visEnd, -1, true);
                }
                t.title = formatDates(
                        visStart,
                        addDays(cloneDate(visEnd), -1),
                        opt('titleFormat')
                );
                t.start = start;
                t.end = end;
                t.visStart = visStart;
                t.visEnd = visEnd;
                renderAgenda(weekends ? 7 : 5);
        }
        

}

fcViews.agendaDay = AgendaDayView;

function AgendaDayView(element, calendar) {
        var t = this;
        
        
        // exports
        t.render = render;
        
        
        // imports
        AgendaView.call(t, element, calendar, 'agendaDay');
        var opt = t.opt;
        var renderAgenda = t.renderAgenda;
        var formatDate = calendar.formatDate;
        
        
        
        function render(date, delta) {
                if (delta) {
                        addDays(date, delta);
                        if (!opt('weekends')) {
                                skipWeekend(date, delta < 0 ? -1 : 1);
                        }
                }
                var start = cloneDate(date, true);
                var end = addDays(cloneDate(start), 1);
                t.title = formatDate(date, opt('titleFormat'));
                t.start = t.visStart = start;
                t.end = t.visEnd = end;
                renderAgenda(1);
        }
        

}

setDefaults({
        allDaySlot: true,
        allDayText: 'all-day',
        firstHour: 6,
        slotMinutes: 30,
        defaultEventMinutes: 120,
        axisFormat: 'h(:mm)tt',
        timeFormat: {
                agenda: 'h:mm{ - h:mm}'
        },
        dragOpacity: {
                agenda: .5
        },
        minTime: 0,
        maxTime: 24
});


// TODO: make it work in quirks mode (event corners, all-day height)
// TODO: test liquid width, especially in IE6


function AgendaView(element, calendar, viewName) {
        var t = this;
        
        
        // exports
        t.renderAgenda = renderAgenda;
        t.setWidth = setWidth;
        t.setHeight = setHeight;
        t.beforeHide = beforeHide;
        t.afterShow = afterShow;
        t.defaultEventEnd = defaultEventEnd;
        t.timePosition = timePosition;
        t.dayOfWeekCol = dayOfWeekCol;
        t.dateCell = dateCell;
        t.cellDate = cellDate;
        t.cellIsAllDay = cellIsAllDay;
        t.allDayRow = getAllDayRow;
        t.allDayBounds = allDayBounds;
        t.getHoverListener = function() { return hoverListener };
        t.colContentLeft = colContentLeft;
        t.colContentRight = colContentRight;
        t.getDaySegmentContainer = function() { return daySegmentContainer };
        t.getSlotSegmentContainer = function() { return slotSegmentContainer };
        t.getMinMinute = function() { return minMinute };
        t.getMaxMinute = function() { return maxMinute };
        t.getBodyContent = function() { return slotContent }; // !!??
        t.getRowCnt = function() { return 1 };
        t.getColCnt = function() { return colCnt };
        t.getColWidth = function() { return colWidth };
        t.getSlotHeight = function() { return slotHeight };
        t.defaultSelectionEnd = defaultSelectionEnd;
        t.renderDayOverlay = renderDayOverlay;
        t.renderSelection = renderSelection;
        t.clearSelection = clearSelection;
        t.reportDayClick = reportDayClick; // selection mousedown hack
        t.dragStart = dragStart;
        t.dragStop = dragStop;
        
        
        // imports
        View.call(t, element, calendar, viewName);
        OverlayManager.call(t);
        SelectionManager.call(t);
        AgendaEventRenderer.call(t);
        var opt = t.opt;
        var trigger = t.trigger;
        var clearEvents = t.clearEvents;
        var renderOverlay = t.renderOverlay;
        var clearOverlays = t.clearOverlays;
        var reportSelection = t.reportSelection;
        var unselect = t.unselect;
        var daySelectionMousedown = t.daySelectionMousedown;
        var slotSegHtml = t.slotSegHtml;
        var formatDate = calendar.formatDate;
        
        
        // locals
        
        var dayTable;
        var dayHead;
        var dayHeadCells;
        var dayBody;
        var dayBodyCells;
        var dayBodyCellInners;
        var dayBodyFirstCell;
        var dayBodyFirstCellStretcher;
        var slotLayer;
        var daySegmentContainer;
        var allDayTable;
        var allDayRow;
        var slotScroller;
        var slotContent;
        var slotSegmentContainer;
        var slotTable;
        var slotTableFirstInner;
        var axisFirstCells;
        var gutterCells;
        var selectionHelper;
        
        var viewWidth;
        var viewHeight;
        var axisWidth;
        var colWidth;
        var gutterWidth;
        var slotHeight; // TODO: what if slotHeight changes? (see issue 650)
        var savedScrollTop;
        
        var colCnt;
        var slotCnt;
        var coordinateGrid;
        var hoverListener;
        var colContentPositions;
        var slotTopCache = {};
        
        var tm;
        var firstDay;
        var nwe;            // no weekends (int)
        var rtl, dis, dit;  // day index sign / translate
        var minMinute, maxMinute;
        var colFormat;
        

        
        /* Rendering
        -----------------------------------------------------------------------------*/
        
        
        disableTextSelection(element.addClass('fc-agenda'));
        
        
        function renderAgenda(c) {
                colCnt = c;
                updateOptions();
                if (!dayTable) {
                        buildSkeleton();
                }else{
                        clearEvents();
                }
                updateCells();
        }
        
        
        
        function updateOptions() {
                tm = opt('theme') ? 'ui' : 'fc';
                nwe = opt('weekends') ? 0 : 1;
                firstDay = opt('firstDay');
                if (rtl = opt('isRTL')) {
                        dis = -1;
                        dit = colCnt - 1;
                }else{
                        dis = 1;
                        dit = 0;
                }
                minMinute = parseTime(opt('minTime'));
                maxMinute = parseTime(opt('maxTime'));
                colFormat = opt('columnFormat');
        }
        
        
        
        function buildSkeleton() {
                var headerClass = tm + "-widget-header";
                var contentClass = tm + "-widget-content";
                var s;
                var i;
                var d;
                var maxd;
                var minutes;
                var slotNormal = opt('slotMinutes') % 15 == 0;
                
                s =
                        "<table style='width:100%' class='fc-agenda-days fc-border-separate' cellspacing='0'>" +
                        "<thead>" +
                        "<tr>" +
                        "<th class='fc-agenda-axis " + headerClass + "'>&nbsp;</th>";
                for (i=0; i<colCnt; i++) {
                        s +=
                                "<th class='fc- fc-col" + i + ' ' + headerClass + "'/>"; // fc- needed for setDayID
                }
                s +=
                        "<th class='fc-agenda-gutter " + headerClass + "'>&nbsp;</th>" +
                        "</tr>" +
                        "</thead>" +
                        "<tbody>" +
                        "<tr>" +
                        "<th class='fc-agenda-axis " + headerClass + "'>&nbsp;</th>";
                for (i=0; i<colCnt; i++) {
                        s +=
                                "<td class='fc- fc-col" + i + ' ' + contentClass + "'>" + // fc- needed for setDayID
                                "<div>" +
                                "<div class='fc-day-content'>" +
                                "<div style='position:relative'>&nbsp;</div>" +
                                "</div>" +
                                "</div>" +
                                "</td>";
                }
                s +=
                        "<td class='fc-agenda-gutter " + contentClass + "'>&nbsp;</td>" +
                        "</tr>" +
                        "</tbody>" +
                        "</table>";
                dayTable = $(s).appendTo(element);
                dayHead = dayTable.find('thead');
                dayHeadCells = dayHead.find('th').slice(1, -1);
                dayBody = dayTable.find('tbody');
                dayBodyCells = dayBody.find('td').slice(0, -1);
                dayBodyCellInners = dayBodyCells.find('div.fc-day-content div');
                dayBodyFirstCell = dayBodyCells.eq(0);
                dayBodyFirstCellStretcher = dayBodyFirstCell.find('> div');
                
                markFirstLast(dayHead.add(dayHead.find('tr')));
                markFirstLast(dayBody.add(dayBody.find('tr')));
                
                axisFirstCells = dayHead.find('th:first');
                gutterCells = dayTable.find('.fc-agenda-gutter');
                
                slotLayer =
                        $("<div style='position:absolute;z-index:2;left:0;width:100%'/>")
                                .appendTo(element);
                                
                if (opt('allDaySlot')) {
                
                        daySegmentContainer =
                                $("<div style='position:absolute;z-index:8;top:0;left:0'/>")
                                        .appendTo(slotLayer);
                
                        s =
                                "<table style='width:100%' class='fc-agenda-allday' cellspacing='0'>" +
                                "<tr>" +
                                "<th class='" + headerClass + " fc-agenda-axis'>" + opt('allDayText') + "</th>" +
                                "<td>" +
                                "<div class='fc-day-content'><div style='position:relative'/></div>" +
                                "</td>" +
                                "<th class='" + headerClass + " fc-agenda-gutter'>&nbsp;</th>" +
                                "</tr>" +
                                "</table>";
                        allDayTable = $(s).appendTo(slotLayer);
                        allDayRow = allDayTable.find('tr');
                        
                        dayBind(allDayRow.find('td'));
                        
                        axisFirstCells = axisFirstCells.add(allDayTable.find('th:first'));
                        gutterCells = gutterCells.add(allDayTable.find('th.fc-agenda-gutter'));
                        
                        slotLayer.append(
                                "<div class='fc-agenda-divider " + headerClass + "'>" +
                                "<div class='fc-agenda-divider-inner'/>" +
                                "</div>"
                        );
                        
                }else{
                
                        daySegmentContainer = $([]); // in jQuery 1.4, we can just do $()
                
                }
                
                slotScroller =
                        $("<div style='position:absolute;width:100%;overflow-x:hidden;overflow-y:auto'/>")
                                .appendTo(slotLayer);
                                
                slotContent =
                        $("<div style='position:relative;width:100%;overflow:hidden'/>")
                                .appendTo(slotScroller);
                                
                slotSegmentContainer =
                        $("<div style='position:absolute;z-index:8;top:0;left:0'/>")
                                .appendTo(slotContent);
                
                s =
                        "<table class='fc-agenda-slots' style='width:100%' cellspacing='0'>" +
                        "<tbody>";
                d = zeroDate();
                maxd = addMinutes(cloneDate(d), maxMinute);
                addMinutes(d, minMinute);
                slotCnt = 0;
                for (i=0; d < maxd; i++) {
                        minutes = d.getMinutes();
                        s +=
                                "<tr class='fc-slot" + i + ' ' + (!minutes ? '' : 'fc-minor') + "'>" +
                                "<th class='fc-agenda-axis " + headerClass + "'>" +
                                ((!slotNormal || !minutes) ? formatDate(d, opt('axisFormat')) : '&nbsp;') +
                                "</th>" +
                                "<td class='" + contentClass + "'>" +
                                "<div style='position:relative'>&nbsp;</div>" +
                                "</td>" +
                                "</tr>";
                        addMinutes(d, opt('slotMinutes'));
                        slotCnt++;
                }
                s +=
                        "</tbody>" +
                        "</table>";
                slotTable = $(s).appendTo(slotContent);
                slotTableFirstInner = slotTable.find('div:first');
                
                slotBind(slotTable.find('td'));
                
                axisFirstCells = axisFirstCells.add(slotTable.find('th:first'));
        }
        
        
        
        function updateCells() {
                var i;
                var headCell;
                var bodyCell;
                var date;
                var today = clearTime(new Date());
                for (i=0; i<colCnt; i++) {
                        date = colDate(i);
                        headCell = dayHeadCells.eq(i);
                        headCell.html(formatDate(date, colFormat));
                        bodyCell = dayBodyCells.eq(i);
                        if (+date == +today) {
                                bodyCell.addClass(tm + '-state-highlight fc-today');
                        }else{
                                bodyCell.removeClass(tm + '-state-highlight fc-today');
                        }
                        setDayID(headCell.add(bodyCell), date);
                }
        }
        
        
        
        function setHeight(height, dateChanged) {
                if (height === undefined) {
                        height = viewHeight;
                }
                viewHeight = height;
                slotTopCache = {};
        
                var headHeight = dayBody.position().top;
                var allDayHeight = slotScroller.position().top; // including divider
                var bodyHeight = Math.min( // total body height, including borders
                        height - headHeight,   // when scrollbars
                        slotTable.height() + allDayHeight + 1 // when no scrollbars. +1 for bottom border
                );
                
                dayBodyFirstCellStretcher
                        .height(bodyHeight - vsides(dayBodyFirstCell));
                
                slotLayer.css('top', headHeight);
                
                slotScroller.height(bodyHeight - allDayHeight - 1);
                
                slotHeight = slotTableFirstInner.height() + 1; // +1 for border
                
                if (dateChanged) {
                        resetScroll();
                }
        }
        
        
        
        function setWidth(width) {
                viewWidth = width;
                colContentPositions.clear();
                
                axisWidth = 0;
                setOuterWidth(
                        axisFirstCells
                                .width('')
                                .each(function(i, _cell) {
                                        axisWidth = Math.max(axisWidth, $(_cell).outerWidth());
                                }),
                        axisWidth
                );
                
                var slotTableWidth = slotScroller[0].clientWidth; // needs to be done after axisWidth (for IE7)
                //slotTable.width(slotTableWidth);
                
                gutterWidth = slotScroller.width() - slotTableWidth;
                if (gutterWidth) {
                        setOuterWidth(gutterCells, gutterWidth);
                        gutterCells
                                .show()
                                .prev()
                                .removeClass('fc-last');
                }else{
                        gutterCells
                                .hide()
                                .prev()
                                .addClass('fc-last');
                }
                
                colWidth = Math.floor((slotTableWidth - axisWidth) / colCnt);
                setOuterWidth(dayHeadCells.slice(0, -1), colWidth);
        }
        


        function resetScroll() {
                var d0 = zeroDate();
                var scrollDate = cloneDate(d0);
                scrollDate.setHours(opt('firstHour'));
                var top = timePosition(d0, scrollDate) + 1; // +1 for the border
                function scroll() {
                        slotScroller.scrollTop(top);
                }
                scroll();
                setTimeout(scroll, 0); // overrides any previous scroll state made by the browser
        }
        
        
        function beforeHide() {
                savedScrollTop = slotScroller.scrollTop();
        }
        
        
        function afterShow() {
                slotScroller.scrollTop(savedScrollTop);
        }
        
        
        
        /* Slot/Day clicking and binding
        -----------------------------------------------------------------------*/
        

        function dayBind(cells) {
                cells.click(slotClick)
                        .mousedown(daySelectionMousedown);
        }


        function slotBind(cells) {
                cells.click(slotClick)
                        .mousedown(slotSelectionMousedown);
        }
        
        
        function slotClick(ev) {
                if (!opt('selectable')) { // if selectable, SelectionManager will worry about dayClick
                        var col = Math.min(colCnt-1, Math.floor((ev.pageX - dayTable.offset().left - axisWidth) / colWidth));
                        var date = colDate(col);
                        var rowMatch = this.parentNode.className.match(/fc-slot(\d+)/); // TODO: maybe use data
                        if (rowMatch) {
                                var mins = parseInt(rowMatch[1]) * opt('slotMinutes');
                                var hours = Math.floor(mins/60);
                                date.setHours(hours);
                                date.setMinutes(mins%60 + minMinute);
                                trigger('dayClick', dayBodyCells[col], date, false, ev);
                        }else{
                                trigger('dayClick', dayBodyCells[col], date, true, ev);
                        }
                }
        }
        
        
        
        /* Semi-transparent Overlay Helpers
        -----------------------------------------------------*/
        

        function renderDayOverlay(startDate, endDate, refreshCoordinateGrid) { // endDate is exclusive
                if (refreshCoordinateGrid) {
                        coordinateGrid.build();
                }
                var visStart = cloneDate(t.visStart);
                var startCol, endCol;
                if (rtl) {
                        startCol = dayDiff(endDate, visStart)*dis+dit+1;
                        endCol = dayDiff(startDate, visStart)*dis+dit+1;
                }else{
                        startCol = dayDiff(startDate, visStart);
                        endCol = dayDiff(endDate, visStart);
                }
                startCol = Math.max(0, startCol);
                endCol = Math.min(colCnt, endCol);
                if (startCol < endCol) {
                        dayBind(
                                renderCellOverlay(0, startCol, 0, endCol-1)
                        );
                }
        }
        
        
        function renderCellOverlay(row0, col0, row1, col1) { // only for all-day?
                var rect = coordinateGrid.rect(row0, col0, row1, col1, slotLayer);
                return renderOverlay(rect, slotLayer);
        }
        

        function renderSlotOverlay(overlayStart, overlayEnd) {
                var dayStart = cloneDate(t.visStart);
                var dayEnd = addDays(cloneDate(dayStart), 1);
                for (var i=0; i<colCnt; i++) {
                        var stretchStart = new Date(Math.max(dayStart, overlayStart));
                        var stretchEnd = new Date(Math.min(dayEnd, overlayEnd));
                        if (stretchStart < stretchEnd) {
                                var col = i*dis+dit;
                                var rect = coordinateGrid.rect(0, col, 0, col, slotContent); // only use it for horizontal coords
                                var top = timePosition(dayStart, stretchStart);
                                var bottom = timePosition(dayStart, stretchEnd);
                                rect.top = top;
                                rect.height = bottom - top;
                                slotBind(
                                        renderOverlay(rect, slotContent)
                                );
                        }
                        addDays(dayStart, 1);
                        addDays(dayEnd, 1);
                }
        }
        
        
        
        /* Coordinate Utilities
        -----------------------------------------------------------------------------*/
        
        
        coordinateGrid = new CoordinateGrid(function(rows, cols) {
                var e, n, p;
                dayHeadCells.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();
                if (opt('allDaySlot')) {
                        e = allDayRow;
                        n = e.offset().top;
                        rows[0] = [n, n+e.outerHeight()];
                }
                var slotTableTop = slotContent.offset().top;
                var slotScrollerTop = slotScroller.offset().top;
                var slotScrollerBottom = slotScrollerTop + slotScroller.outerHeight();
                function constrain(n) {
                        return Math.max(slotScrollerTop, Math.min(slotScrollerBottom, n));
                }
                for (var i=0; i<slotCnt; i++) {
                        rows.push([
                                constrain(slotTableTop + slotHeight*i),
                                constrain(slotTableTop + slotHeight*(i+1))
                        ]);
                }
        });
        
        
        hoverListener = new HoverListener(coordinateGrid);
        
        
        colContentPositions = new HorizontalPositionCache(function(col) {
                return dayBodyCellInners.eq(col);
        });
        
        
        function colContentLeft(col) {
                return colContentPositions.left(col);
        }
        
        
        function colContentRight(col) {
                return colContentPositions.right(col);
        }
        
        
        
        
        function dateCell(date) { // "cell" terminology is now confusing
                return {
                        row: Math.floor(dayDiff(date, t.visStart) / 7),
                        col: dayOfWeekCol(date.getDay())
                };
        }
        
        
        function cellDate(cell) {
                var d = colDate(cell.col);
                var slotIndex = cell.row;
                if (opt('allDaySlot')) {
                        slotIndex--;
                }
                if (slotIndex >= 0) {
                        addMinutes(d, minMinute + slotIndex * opt('slotMinutes'));
                }
                return d;
        }
        
        
        function colDate(col) { // returns dates with 00:00:00
                return addDays(cloneDate(t.visStart), col*dis+dit);
        }
        
        
        function cellIsAllDay(cell) {
                return opt('allDaySlot') && !cell.row;
        }
        
        
        function dayOfWeekCol(dayOfWeek) {
                return ((dayOfWeek - Math.max(firstDay, nwe) + colCnt) % colCnt)*dis+dit;
        }
        
        
        
        
        // get the Y coordinate of the given time on the given day (both Date objects)
        function timePosition(day, time) { // both date objects. day holds 00:00 of current day
                day = cloneDate(day, true);
                if (time < addMinutes(cloneDate(day), minMinute)) {
                        return 0;
                }
                if (time >= addMinutes(cloneDate(day), maxMinute)) {
                        return slotTable.height();
                }
                var slotMinutes = opt('slotMinutes'),
                        minutes = time.getHours()*60 + time.getMinutes() - minMinute,
                        slotI = Math.floor(minutes / slotMinutes),
                        slotTop = slotTopCache[slotI];
                if (slotTop === undefined) {
                        slotTop = slotTopCache[slotI] = slotTable.find('tr:eq(' + slotI + ') td div')[0].offsetTop; //.position().top; // need this optimization???
                }
                return Math.max(0, Math.round(
                        slotTop - 1 + slotHeight * ((minutes % slotMinutes) / slotMinutes)
                ));
        }
        
        
        function allDayBounds() {
                return {
                        left: axisWidth,
                        right: viewWidth - gutterWidth
                }
        }
        
        
        function getAllDayRow(index) {
                return allDayRow;
        }
        
        
        function defaultEventEnd(event) {
                var start = cloneDate(event.start);
                if (event.allDay) {
                        return start;
                }
                return addMinutes(start, opt('defaultEventMinutes'));
        }
        
        
        
        /* Selection
        ---------------------------------------------------------------------------------*/
        
        
        function defaultSelectionEnd(startDate, allDay) {
                if (allDay) {
                        return cloneDate(startDate);
                }
                return addMinutes(cloneDate(startDate), opt('slotMinutes'));
        }
        
        
        function renderSelection(startDate, endDate, allDay) { // only for all-day
                if (allDay) {
                        if (opt('allDaySlot')) {
                                renderDayOverlay(startDate, addDays(cloneDate(endDate), 1), true);
                        }
                }else{
                        renderSlotSelection(startDate, endDate);
                }
        }
        
        
        function renderSlotSelection(startDate, endDate) {
                var helperOption = opt('selectHelper');
                coordinateGrid.build();
                if (helperOption) {
                        var col = dayDiff(startDate, t.visStart) * dis + dit;
                        if (col >= 0 && col < colCnt) { // only works when times are on same day
                                var rect = coordinateGrid.rect(0, col, 0, col, slotContent); // only for horizontal coords
                                var top = timePosition(startDate, startDate);
                                var bottom = timePosition(startDate, endDate);
                                if (bottom > top) { // protect against selections that are entirely before or after visible range
                                        rect.top = top;
                                        rect.height = bottom - top;
                                        rect.left += 2;
                                        rect.width -= 5;
                                        if ($.isFunction(helperOption)) {
                                                var helperRes = helperOption(startDate, endDate);
                                                if (helperRes) {
                                                        rect.position = 'absolute';
                                                        rect.zIndex = 8;
                                                        selectionHelper = $(helperRes)
                                                                .css(rect)
                                                                .appendTo(slotContent);
                                                }
                                        }else{
                                                rect.isStart = true; // conside rect a "seg" now
                                                rect.isEnd = true;   //
                                                selectionHelper = $(slotSegHtml(
                                                        {
                                                                title: '',
                                                                start: startDate,
                                                                end: endDate,
                                                                className: ['fc-select-helper'],
                                                                editable: false
                                                        },
                                                        rect
                                                ));
                                                selectionHelper.css('opacity', opt('dragOpacity'));
                                        }
                                        if (selectionHelper) {
                                                slotBind(selectionHelper);
                                                slotContent.append(selectionHelper);
                                                setOuterWidth(selectionHelper, rect.width, true); // needs to be after appended
                                                setOuterHeight(selectionHelper, rect.height, true);
                                        }
                                }
                        }
                }else{
                        renderSlotOverlay(startDate, endDate);
                }
        }
        
        
        function clearSelection() {
                clearOverlays();
                if (selectionHelper) {
                        selectionHelper.remove();
                        selectionHelper = null;
                }
        }
        
        
        function slotSelectionMousedown(ev) {
                if (ev.which == 1 && opt('selectable')) { // ev.which==1 means left mouse button
                        unselect(ev);
                        var dates;
                        hoverListener.start(function(cell, origCell) {
                                clearSelection();
                                if (cell && cell.col == origCell.col && !cellIsAllDay(cell)) {
                                        var d1 = cellDate(origCell);
                                        var d2 = cellDate(cell);
                                        dates = [
                                                d1,
                                                addMinutes(cloneDate(d1), opt('slotMinutes')),
                                                d2,
                                                addMinutes(cloneDate(d2), opt('slotMinutes'))
                                        ].sort(cmp);
                                        renderSlotSelection(dates[0], dates[3]);
                                }else{
                                        dates = null;
                                }
                        }, ev);
                        $(document).one('mouseup', function(ev) {
                                hoverListener.stop();
                                if (dates) {
                                        if (+dates[0] == +dates[1]) {
                                                reportDayClick(dates[0], false, ev);
                                        }
                                        reportSelection(dates[0], dates[3], false, ev);
                                }
                        });
                }
        }
        
        
        function reportDayClick(date, allDay, ev) {
                trigger('dayClick', dayBodyCells[dayOfWeekCol(date.getDay())], date, allDay, ev);
        }
        
        
        
        /* External Dragging
        --------------------------------------------------------------------------------*/
        
        
        function dragStart(_dragElement, ev, ui) {
                hoverListener.start(function(cell) {
                        clearOverlays();
                        if (cell) {
                                if (cellIsAllDay(cell)) {
                                        renderCellOverlay(cell.row, cell.col, cell.row, cell.col);
                                }else{
                                        var d1 = cellDate(cell);
                                        var d2 = addMinutes(cloneDate(d1), opt('defaultEventMinutes'));
                                        renderSlotOverlay(d1, d2);
                                }
                        }
                }, ev);
        }
        
        
        function dragStop(_dragElement, ev, ui) {
                var cell = hoverListener.stop();
                clearOverlays();
                if (cell) {
                        trigger('drop', _dragElement, cellDate(cell), cellIsAllDay(cell), ev, ui);
                }
        }


}

function AgendaEventRenderer() {
        var t = this;
        
        
        // exports
        t.renderEvents = renderEvents;
        t.compileDaySegs = compileDaySegs; // for DayEventRenderer
        t.clearEvents = clearEvents;
        t.slotSegHtml = slotSegHtml;
        t.bindDaySeg = bindDaySeg;
        
        
        // imports
        DayEventRenderer.call(t);
        var opt = t.opt;
        var trigger = t.trigger;
        //var setOverflowHidden = t.setOverflowHidden;
        var isEventDraggable = t.isEventDraggable;
        var isEventResizable = t.isEventResizable;
        var eventEnd = t.eventEnd;
        var reportEvents = t.reportEvents;
        var reportEventClear = t.reportEventClear;
        var eventElementHandlers = t.eventElementHandlers;
        var setHeight = t.setHeight;
        var getDaySegmentContainer = t.getDaySegmentContainer;
        var getSlotSegmentContainer = t.getSlotSegmentContainer;
        var getHoverListener = t.getHoverListener;
        var getMaxMinute = t.getMaxMinute;
        var getMinMinute = t.getMinMinute;
        var timePosition = t.timePosition;
        var colContentLeft = t.colContentLeft;
        var colContentRight = t.colContentRight;
        var renderDaySegs = t.renderDaySegs;
        var resizableDayEvent = t.resizableDayEvent; // TODO: streamline binding architecture
        var getColCnt = t.getColCnt;
        var getColWidth = t.getColWidth;
        var getSlotHeight = t.getSlotHeight;
        var getBodyContent = t.getBodyContent;
        var reportEventElement = t.reportEventElement;
        var showEvents = t.showEvents;
        var hideEvents = t.hideEvents;
        var eventDrop = t.eventDrop;
        var eventResize = t.eventResize;
        var renderDayOverlay = t.renderDayOverlay;
        var clearOverlays = t.clearOverlays;
        var calendar = t.calendar;
        var formatDate = calendar.formatDate;
        var formatDates = calendar.formatDates;
        
        
        
        /* Rendering
        ----------------------------------------------------------------------------*/
        

        function renderEvents(events, modifiedEventId) {
                reportEvents(events);
                var i, len=events.length,
                        dayEvents=[],
                        slotEvents=[];
                for (i=0; i<len; i++) {
                        if (events[i].allDay) {
                                dayEvents.push(events[i]);
                        }else{
                                slotEvents.push(events[i]);
                        }
                }
                if (opt('allDaySlot')) {
                        renderDaySegs(compileDaySegs(dayEvents), modifiedEventId);
                        setHeight(); // no params means set to viewHeight
                }
                renderSlotSegs(compileSlotSegs(slotEvents), modifiedEventId);
        }
        
        
        function clearEvents() {
                reportEventClear();
                getDaySegmentContainer().empty();
                getSlotSegmentContainer().empty();
        }
        
        
        function compileDaySegs(events) {
                var levels = stackSegs(sliceSegs(events, $.map(events, exclEndDay), t.visStart, t.visEnd)),
                        i, levelCnt=levels.length, level,
                        j, seg,
                        segs=[];
                for (i=0; i<levelCnt; i++) {
                        level = levels[i];
                        for (j=0; j<level.length; j++) {
                                seg = level[j];
                                seg.row = 0;
                                seg.level = i; // not needed anymore
                                segs.push(seg);
                        }
                }
                return segs;
        }
        
        
        function compileSlotSegs(events) {
                var colCnt = getColCnt(),
                        minMinute = getMinMinute(),
                        maxMinute = getMaxMinute(),
                        d = addMinutes(cloneDate(t.visStart), minMinute),
                        visEventEnds = $.map(events, slotEventEnd),
                        i, col,
                        j, level,
                        k, seg,
                        segs=[];
                for (i=0; i<colCnt; i++) {
                        col = stackSegs(sliceSegs(events, visEventEnds, d, addMinutes(cloneDate(d), maxMinute-minMinute)));
                        countForwardSegs(col);
                        for (j=0; j<col.length; j++) {
                                level = col[j];
                                for (k=0; k<level.length; k++) {
                                        seg = level[k];
                                        seg.col = i;
                                        seg.level = j;
                                        segs.push(seg);
                                }
                        }
                        addDays(d, 1, true);
                }
                return segs;
        }
        
        
        function slotEventEnd(event) {
                if (event.end) {
                        return cloneDate(event.end);
                }else{
                        return addMinutes(cloneDate(event.start), opt('defaultEventMinutes'));
                }
        }
        
        
        // renders events in the 'time slots' at the bottom
        
        function renderSlotSegs(segs, modifiedEventId) {
        
                var i, segCnt=segs.length, seg,
                        event,
                        classes,
                        top, bottom,
                        colI, levelI, forward,
                        leftmost,
                        availWidth,
                        outerWidth,
                        left,
                        html='',
                        eventElements,
                        eventElement,
                        triggerRes,
                        vsideCache={},
                        hsideCache={},
                        key, val,
                        contentElement,
                        height,
                        slotSegmentContainer = getSlotSegmentContainer(),
                        rtl, dis, dit,
                        colCnt = getColCnt();
                        
                if (rtl = opt('isRTL')) {
                        dis = -1;
                        dit = colCnt - 1;
                }else{
                        dis = 1;
                        dit = 0;
                }
                        
                // calculate position/dimensions, create html
                for (i=0; i<segCnt; i++) {
                        seg = segs[i];
                        event = seg.event;
                        top = timePosition(seg.start, seg.start);
                        bottom = timePosition(seg.start, seg.end);
                        colI = seg.col;
                        levelI = seg.level;
                        forward = seg.forward || 0;
                        leftmost = colContentLeft(colI*dis + dit);
                        availWidth = colContentRight(colI*dis + dit) - leftmost;
                        availWidth = Math.min(availWidth-6, availWidth*.95); // TODO: move this to CSS
                        if (levelI) {
                                // indented and thin
                                outerWidth = availWidth / (levelI + forward + 1);
                        }else{
                                if (forward) {
                                        // moderately wide, aligned left still
                                        outerWidth = ((availWidth / (forward + 1)) - (12/2)) * 2; // 12 is the predicted width of resizer =
                                }else{
                                        // can be entire width, aligned left
                                        outerWidth = availWidth;
                                }
                        }
                        left = leftmost +                                  // leftmost possible
                                (availWidth / (levelI + forward + 1) * levelI) // indentation
                                * dis + (rtl ? availWidth - outerWidth : 0);   // rtl
                        seg.top = top;
                        seg.left = left;
                        seg.outerWidth = outerWidth;
                        seg.outerHeight = bottom - top;
                        html += slotSegHtml(event, seg);
                }
                slotSegmentContainer[0].innerHTML = html; // faster than html()
                eventElements = slotSegmentContainer.children();
                
                // retrieve elements, run through eventRender callback, bind event handlers
                for (i=0; i<segCnt; i++) {
                        seg = segs[i];
                        event = seg.event;
                        eventElement = $(eventElements[i]); // faster than eq()
                        triggerRes = trigger('eventRender', event, event, eventElement);
                        if (triggerRes === false) {
                                eventElement.remove();
                        }else{
                                if (triggerRes && triggerRes !== true) {
                                        eventElement.remove();
                                        eventElement = $(triggerRes)
                                                .css({
                                                        position: 'absolute',
                                                        top: seg.top,
                                                        left: seg.left
                                                })
                                                .appendTo(slotSegmentContainer);
                                }
                                seg.element = eventElement;
                                if (event._id === modifiedEventId) {
                                        bindSlotSeg(event, eventElement, seg);
                                }else{
                                        eventElement[0]._fci = i; // for lazySegBind
                                }
                                reportEventElement(event, eventElement);
                        }
                }
                
                lazySegBind(slotSegmentContainer, segs, bindSlotSeg);
                
                // record event sides and title positions
                for (i=0; i<segCnt; i++) {
                        seg = segs[i];
                        if (eventElement = seg.element) {
                                val = vsideCache[key = seg.key = cssKey(eventElement[0])];
                                seg.vsides = val === undefined ? (vsideCache[key] = vsides(eventElement, true)) : val;
                                val = hsideCache[key];
                                seg.hsides = val === undefined ? (hsideCache[key] = hsides(eventElement, true)) : val;
                                contentElement = eventElement.find('div.fc-event-content');
                                if (contentElement.length) {
                                        seg.contentTop = contentElement[0].offsetTop;
                                }
                        }
                }
                
                // set all positions/dimensions at once
                for (i=0; i<segCnt; i++) {
                        seg = segs[i];
                        if (eventElement = seg.element) {
                                eventElement[0].style.width = Math.max(0, seg.outerWidth - seg.hsides) + 'px';
                                height = Math.max(0, seg.outerHeight - seg.vsides);
                                eventElement[0].style.height = height + 'px';
                                event = seg.event;
                                if (seg.contentTop !== undefined && height - seg.contentTop < 10) {
                                        // not enough room for title, put it in the time header
                                        eventElement.find('div.fc-event-time')
                                                .text(formatDate(event.start, opt('timeFormat')) + ' - ' + event.title);
                                        eventElement.find('div.fc-event-title')
                                                .remove();
                                }
                                trigger('eventAfterRender', event, event, eventElement);
                        }
                }
                                        
        }
        
        
        function slotSegHtml(event, seg) {
                var html = "<";
                var url = event.url;
                var skinCss = getSkinCss(event, opt);
                var skinCssAttr = (skinCss ? " style='" + skinCss + "'" : '');
                var classes = ['fc-event', 'fc-event-skin', 'fc-event-vert'];
                if (isEventDraggable(event)) {
                        classes.push('fc-event-draggable');
                }
                if (seg.isStart) {
                        classes.push('fc-corner-top');
                }
                if (seg.isEnd) {
                        classes.push('fc-corner-bottom');
                }
                classes = classes.concat(event.className);
                if (event.source) {
                        classes = classes.concat(event.source.className || []);
                }
                if (url) {
                        html += "a href='" + htmlEscape(event.url) + "'";
                }else{
                        html += "div";
                }
                html +=
                        " class='" + classes.join(' ') + "'" +
                        " style='position:absolute;z-index:8;top:" + seg.top + "px;left:" + seg.left + "px;" + skinCss + "'" +
                        ">" +
                        "<div class='fc-event-inner fc-event-skin'" + skinCssAttr + ">" +
                        "<div class='fc-event-head fc-event-skin'" + skinCssAttr + ">" +
                        "<div class='fc-event-time'>" +
                        htmlEscape(formatDates(event.start, event.end, opt('timeFormat'))) +
                        "</div>" +
                        "</div>" +
                        "<div class='fc-event-content'>" +
                        "<div class='fc-event-title'>" +
                        htmlEscape(event.title) +
                        "</div>" +
                        "</div>" +
                        "<div class='fc-event-bg'></div>" +
                        "</div>"; // close inner
                if (seg.isEnd && isEventResizable(event)) {
                        html +=
                                "<div class='ui-resizable-handle ui-resizable-s'>=</div>";
                }
                html +=
                        "</" + (url ? "a" : "div") + ">";
                return html;
        }
        
        
        function bindDaySeg(event, eventElement, seg) {
                if (isEventDraggable(event)) {
                        draggableDayEvent(event, eventElement, seg.isStart);
                }
                if (seg.isEnd && isEventResizable(event)) {
                        resizableDayEvent(event, eventElement, seg);
                }
                eventElementHandlers(event, eventElement);
                        // needs to be after, because resizableDayEvent might stopImmediatePropagation on click
        }
        
        
        function bindSlotSeg(event, eventElement, seg) {
                var timeElement = eventElement.find('div.fc-event-time');
                if (isEventDraggable(event)) {
                        draggableSlotEvent(event, eventElement, timeElement);
                }
                if (seg.isEnd && isEventResizable(event)) {
                        resizableSlotEvent(event, eventElement, timeElement);
                }
                eventElementHandlers(event, eventElement);
        }
        
        
        
        /* Dragging
        -----------------------------------------------------------------------------------*/
        
        
        // when event starts out FULL-DAY
        
        function draggableDayEvent(event, eventElement, isStart) {
                var origWidth;
                var revert;
                var allDay=true;
                var dayDelta;
                var dis = opt('isRTL') ? -1 : 1;
                var hoverListener = getHoverListener();
                var colWidth = getColWidth();
                var slotHeight = getSlotHeight();
                var minMinute = getMinMinute();
                eventElement.draggable({
                        zIndex: 9,
                        opacity: opt('dragOpacity', 'month'), // use whatever the month view was using
                        revertDuration: opt('dragRevertDuration'),
                        start: function(ev, ui) {
                                trigger('eventDragStart', eventElement, event, ev, ui);
                                hideEvents(event, eventElement);
                                origWidth = eventElement.width();
                                hoverListener.start(function(cell, origCell, rowDelta, colDelta) {
                                        clearOverlays();
                                        if (cell) {
                                                //setOverflowHidden(true);
                                                revert = false;
                                                dayDelta = colDelta * dis;
                                                if (!cell.row) {
                                                        // on full-days
                                                        renderDayOverlay(
                                                                addDays(cloneDate(event.start), dayDelta),
                                                                addDays(exclEndDay(event), dayDelta)
                                                        );
                                                        resetElement();
                                                }else{
                                                        // mouse is over bottom slots
                                                        if (isStart) {
                                                                if (allDay) {
                                                                        // convert event to temporary slot-event
                                                                        eventElement.width(colWidth - 10); // don't use entire width
                                                                        setOuterHeight(
                                                                                eventElement,
                                                                                slotHeight * Math.round(
                                                                                        (event.end ? ((event.end - event.start) / MINUTE_MS) : opt('defaultEventMinutes'))
                                                                                        / opt('slotMinutes')
                                                                                )
                                                                        );
                                                                        eventElement.draggable('option', 'grid', [colWidth, 1]);
                                                                        allDay = false;
                                                                }
                                                        }else{
                                                                revert = true;
                                                        }
                                                }
                                                revert = revert || (allDay && !dayDelta);
                                        }else{
                                                resetElement();
                                                //setOverflowHidden(false);
                                                revert = true;
                                        }
                                        eventElement.draggable('option', 'revert', revert);
                                }, ev, 'drag');
                        },
                        stop: function(ev, ui) {
                                hoverListener.stop();
                                clearOverlays();
                                trigger('eventDragStop', eventElement, event, ev, ui);
                                if (revert) {
                                        // hasn't moved or is out of bounds (draggable has already reverted)
                                        resetElement();
                                        eventElement.css('filter', ''); // clear IE opacity side-effects
                                        showEvents(event, eventElement);
                                }else{
                                        // changed!
                                        var minuteDelta = 0;
                                        if (!allDay) {
                                                minuteDelta = Math.round((eventElement.offset().top - getBodyContent().offset().top) / slotHeight)
                                                        * opt('slotMinutes')
                                                        + minMinute
                                                        - (event.start.getHours() * 60 + event.start.getMinutes());
                                        }
                                        eventDrop(this, event, dayDelta, minuteDelta, allDay, ev, ui);
                                }
                                //setOverflowHidden(false);
                        }
                });
                function resetElement() {
                        if (!allDay) {
                                eventElement
                                        .width(origWidth)
                                        .height('')
                                        .draggable('option', 'grid', null);
                                allDay = true;
                        }
                }
        }
        
        
        // when event starts out IN TIMESLOTS
        
        function draggableSlotEvent(event, eventElement, timeElement) {
                var origPosition;
                var allDay=false;
                var dayDelta;
                var minuteDelta;
                var prevMinuteDelta;
                var dis = opt('isRTL') ? -1 : 1;
                var hoverListener = getHoverListener();
                var colCnt = getColCnt();
                var colWidth = getColWidth();
                var slotHeight = getSlotHeight();
                eventElement.draggable({
                        zIndex: 9,
                        scroll: false,
                        grid: [colWidth, slotHeight],
                        axis: colCnt==1 ? 'y' : false,
                        opacity: opt('dragOpacity'),
                        revertDuration: opt('dragRevertDuration'),
                        start: function(ev, ui) {
                                trigger('eventDragStart', eventElement, event, ev, ui);
                                hideEvents(event, eventElement);
                                origPosition = eventElement.position();
                                minuteDelta = prevMinuteDelta = 0;
                                hoverListener.start(function(cell, origCell, rowDelta, colDelta) {
                                        eventElement.draggable('option', 'revert', !cell);
                                        clearOverlays();
                                        if (cell) {
                                                dayDelta = colDelta * dis;
                                                if (opt('allDaySlot') && !cell.row) {
                                                        // over full days
                                                        if (!allDay) {
                                                                // convert to temporary all-day event
                                                                allDay = true;
                                                                timeElement.hide();
                                                                eventElement.draggable('option', 'grid', null);
                                                        }
                                                        renderDayOverlay(
                                                                addDays(cloneDate(event.start), dayDelta),
                                                                addDays(exclEndDay(event), dayDelta)
                                                        );
                                                }else{
                                                        // on slots
                                                        resetElement();
                                                }
                                        }
                                }, ev, 'drag');
                        },
                        drag: function(ev, ui) {
                                minuteDelta = Math.round((ui.position.top - origPosition.top) / slotHeight) * opt('slotMinutes');
                                if (minuteDelta != prevMinuteDelta) {
                                        if (!allDay) {
                                                updateTimeText(minuteDelta);
                                        }
                                        prevMinuteDelta = minuteDelta;
                                }
                        },
                        stop: function(ev, ui) {
                                var cell = hoverListener.stop();
                                clearOverlays();
                                trigger('eventDragStop', eventElement, event, ev, ui);
                                if (cell && (dayDelta || minuteDelta || allDay)) {
                                        // changed!
                                        eventDrop(this, event, dayDelta, allDay ? 0 : minuteDelta, allDay, ev, ui);
                                }else{
                                        // either no change or out-of-bounds (draggable has already reverted)
                                        resetElement();
                                        eventElement.css('filter', ''); // clear IE opacity side-effects
                                        eventElement.css(origPosition); // sometimes fast drags make event revert to wrong position
                                        updateTimeText(0);
                                        showEvents(event, eventElement);
                                }
                        }
                });
                function updateTimeText(minuteDelta) {
                        var newStart = addMinutes(cloneDate(event.start), minuteDelta);
                        var newEnd;
                        if (event.end) {
                                newEnd = addMinutes(cloneDate(event.end), minuteDelta);
                        }
                        timeElement.text(formatDates(newStart, newEnd, opt('timeFormat')));
                }
                function resetElement() {
                        // convert back to original slot-event
                        if (allDay) {
                                timeElement.css('display', ''); // show() was causing display=inline
                                eventElement.draggable('option', 'grid', [colWidth, slotHeight]);
                                allDay = false;
                        }
                }
        }
        
        
        
        /* Resizing
        --------------------------------------------------------------------------------------*/
        
        
        function resizableSlotEvent(event, eventElement, timeElement) {
                var slotDelta, prevSlotDelta;
                var slotHeight = getSlotHeight();
                eventElement.resizable({
                        handles: {
                                s: 'div.ui-resizable-s'
                        },
                        grid: slotHeight,
                        start: function(ev, ui) {
                                slotDelta = prevSlotDelta = 0;
                                hideEvents(event, eventElement);
                                eventElement.css('z-index', 9);
                                trigger('eventResizeStart', this, event, ev, ui);
                        },
                        resize: function(ev, ui) {
                                // don't rely on ui.size.height, doesn't take grid into account
                                slotDelta = Math.round((Math.max(slotHeight, eventElement.height()) - ui.originalSize.height) / slotHeight);
                                if (slotDelta != prevSlotDelta) {
                                        timeElement.text(
                                                formatDates(
                                                        event.start,
                                                        (!slotDelta && !event.end) ? null : // no change, so don't display time range
                                                                addMinutes(eventEnd(event), opt('slotMinutes')*slotDelta),
                                                        opt('timeFormat')
                                                )
                                        );
                                        prevSlotDelta = slotDelta;
                                }
                        },
                        stop: function(ev, ui) {
                                trigger('eventResizeStop', this, event, ev, ui);
                                if (slotDelta) {
                                        eventResize(this, event, 0, opt('slotMinutes')*slotDelta, ev, ui);
                                }else{
                                        eventElement.css('z-index', 8);
                                        showEvents(event, eventElement);
                                        // BUG: if event was really short, need to put title back in span
                                }
                        }
                });
        }
        

}


function countForwardSegs(levels) {
        var i, j, k, level, segForward, segBack;
        for (i=levels.length-1; i>0; i--) {
                level = levels[i];
                for (j=0; j<level.length; j++) {
                        segForward = level[j];
                        for (k=0; k<levels[i-1].length; k++) {
                                segBack = levels[i-1][k];
                                if (segsCollide(segForward, segBack)) {
                                        segBack.forward = Math.max(segBack.forward||0, (segForward.forward||0)+1);
                                }
                        }
                }
        }
}




function View(element, calendar, viewName) {
        var t = this;
        
        
        // exports
        t.element = element;
        t.calendar = calendar;
        t.name = viewName;
        t.opt = opt;
        t.trigger = trigger;
        //t.setOverflowHidden = setOverflowHidden;
        t.isEventDraggable = isEventDraggable;
        t.isEventResizable = isEventResizable;
        t.reportEvents = reportEvents;
        t.eventEnd = eventEnd;
        t.reportEventElement = reportEventElement;
        t.reportEventClear = reportEventClear;
        t.eventElementHandlers = eventElementHandlers;
        t.showEvents = showEvents;
        t.hideEvents = hideEvents;
        t.eventDrop = eventDrop;
        t.eventResize = eventResize;
        // t.title
        // t.start, t.end
        // t.visStart, t.visEnd
        
        
        // imports
        var defaultEventEnd = t.defaultEventEnd;
        var normalizeEvent = calendar.normalizeEvent; // in EventManager
        var reportEventChange = calendar.reportEventChange;
        
        
        // locals
        var eventsByID = {};
        var eventElements = [];
        var eventElementsByID = {};
        var options = calendar.options;
        
        
        
        function opt(name, viewNameOverride) {
                var v = options[name];
                if (typeof v == 'object') {
                        return smartProperty(v, viewNameOverride || viewName);
                }
                return v;
        }

        
        function trigger(name, thisObj) {
                return calendar.trigger.apply(
                        calendar,
                        [name, thisObj || t].concat(Array.prototype.slice.call(arguments, 2), [t])
                );
        }
        
        
        /*
        function setOverflowHidden(bool) {
                element.css('overflow', bool ? 'hidden' : '');
        }
        */
        
        
        function isEventDraggable(event) {
                return isEventEditable(event) && !opt('disableDragging');
        }
        
        
        function isEventResizable(event) { // but also need to make sure the seg.isEnd == true
                return isEventEditable(event) && !opt('disableResizing');
        }
        
        
        function isEventEditable(event) {
                return firstDefined(event.editable, (event.source || {}).editable, opt('editable'));
        }
        
        
        
        /* Event Data
        ------------------------------------------------------------------------------*/
        
        
        // report when view receives new events
        function reportEvents(events) { // events are already normalized at this point
                eventsByID = {};
                var i, len=events.length, event;
                for (i=0; i<len; i++) {
                        event = events[i];
                        if (eventsByID[event._id]) {
                                eventsByID[event._id].push(event);
                        }else{
                                eventsByID[event._id] = [event];
                        }
                }
        }
        
        
        // returns a Date object for an event's end
        function eventEnd(event) {
                return event.end ? cloneDate(event.end) : defaultEventEnd(event);
        }
        
        
        
        /* Event Elements
        ------------------------------------------------------------------------------*/
        
        
        // report when view creates an element for an event
        function reportEventElement(event, element) {
                eventElements.push(element);
                if (eventElementsByID[event._id]) {
                        eventElementsByID[event._id].push(element);
                }else{
                        eventElementsByID[event._id] = [element];
                }
        }
        
        
        function reportEventClear() {
                eventElements = [];
                eventElementsByID = {};
        }
        
        
        // attaches eventClick, eventMouseover, eventMouseout
        function eventElementHandlers(event, eventElement) {
                eventElement
                        .click(function(ev) {
                                if (!eventElement.hasClass('ui-draggable-dragging') &&
                                        !eventElement.hasClass('ui-resizable-resizing')) {
                                                return trigger('eventClick', this, event, ev);
                                        }
                        })
                        .hover(
                                function(ev) {
                                        trigger('eventMouseover', this, event, ev);
                                },
                                function(ev) {
                                        trigger('eventMouseout', this, event, ev);
                                }
                        );
                // TODO: don't fire eventMouseover/eventMouseout *while* dragging is occuring (on subject element)
                // TODO: same for resizing
        }
        
        
        function showEvents(event, exceptElement) {
                eachEventElement(event, exceptElement, 'show');
        }
        
        
        function hideEvents(event, exceptElement) {
                eachEventElement(event, exceptElement, 'hide');
        }
        
        
        function eachEventElement(event, exceptElement, funcName) {
                var elements = eventElementsByID[event._id],
                        i, len = elements.length;
                for (i=0; i<len; i++) {
                        if (!exceptElement || elements[i][0] != exceptElement[0]) {
                                elements[i][funcName]();
                        }
                }
        }
        
        
        
        /* Event Modification Reporting
        ---------------------------------------------------------------------------------*/
        
        
        function eventDrop(e, event, dayDelta, minuteDelta, allDay, ev, ui) {
                var oldAllDay = event.allDay;
                var eventId = event._id;
                moveEvents(eventsByID[eventId], dayDelta, minuteDelta, allDay);
                trigger(
                        'eventDrop',
                        e,
                        event,
                        dayDelta,
                        minuteDelta,
                        allDay,
                        function() {
                                // TODO: investigate cases where this inverse technique might not work
                                moveEvents(eventsByID[eventId], -dayDelta, -minuteDelta, oldAllDay);
                                reportEventChange(eventId);
                        },
                        ev,
                        ui
                );
                reportEventChange(eventId);
        }
        
        
        function eventResize(e, event, dayDelta, minuteDelta, ev, ui) {
                var eventId = event._id;
                elongateEvents(eventsByID[eventId], dayDelta, minuteDelta);
                trigger(
                        'eventResize',
                        e,
                        event,
                        dayDelta,
                        minuteDelta,
                        function() {
                                // TODO: investigate cases where this inverse technique might not work
                                elongateEvents(eventsByID[eventId], -dayDelta, -minuteDelta);
                                reportEventChange(eventId);
                        },
                        ev,
                        ui
                );
                reportEventChange(eventId);
        }
        
        
        
        /* Event Modification Math
        ---------------------------------------------------------------------------------*/
        
        
        function moveEvents(events, dayDelta, minuteDelta, allDay) {
                minuteDelta = minuteDelta || 0;
                for (var e, len=events.length, i=0; i<len; i++) {
                        e = events[i];
                        if (allDay !== undefined) {
                                e.allDay = allDay;
                        }
                        addMinutes(addDays(e.start, dayDelta, true), minuteDelta);
                        if (e.end) {
                                e.end = addMinutes(addDays(e.end, dayDelta, true), minuteDelta);
                        }
                        normalizeEvent(e, options);
                }
        }
        
        
        function elongateEvents(events, dayDelta, minuteDelta) {
                minuteDelta = minuteDelta || 0;
                for (var e, len=events.length, i=0; i<len; i++) {
                        e = events[i];
                        e.end = addMinutes(addDays(eventEnd(e), dayDelta, true), minuteDelta);
                        normalizeEvent(e, options);
                }
        }
        

}

function DayEventRenderer() {
        var t = this;

        
        // exports
        t.renderDaySegs = renderDaySegs;
        t.resizableDayEvent = resizableDayEvent;
        
        
        // imports
        var opt = t.opt;
        var trigger = t.trigger;
        var isEventDraggable = t.isEventDraggable;
        var isEventResizable = t.isEventResizable;
        var eventEnd = t.eventEnd;
        var reportEventElement = t.reportEventElement;
        var showEvents = t.showEvents;
        var hideEvents = t.hideEvents;
        var eventResize = t.eventResize;
        var getRowCnt = t.getRowCnt;
        var getColCnt = t.getColCnt;
        var getColWidth = t.getColWidth;
        var allDayRow = t.allDayRow;
        var allDayBounds = t.allDayBounds;
        var colContentLeft = t.colContentLeft;
        var colContentRight = t.colContentRight;
        var dayOfWeekCol = t.dayOfWeekCol;
        var dateCell = t.dateCell;
        var compileDaySegs = t.compileDaySegs;
        var getDaySegmentContainer = t.getDaySegmentContainer;
        var bindDaySeg = t.bindDaySeg; //TODO: streamline this
        var formatDates = t.calendar.formatDates;
        var renderDayOverlay = t.renderDayOverlay;
        var clearOverlays = t.clearOverlays;
        var clearSelection = t.clearSelection;
        
        
        
        /* Rendering
        -----------------------------------------------------------------------------*/
        
        
        function renderDaySegs(segs, modifiedEventId) {
                var segmentContainer = getDaySegmentContainer();
                var rowDivs;
                var rowCnt = getRowCnt();
                var colCnt = getColCnt();
                var i = 0;
                var rowI;
                var levelI;
                var colHeights;
                var j;
                var segCnt = segs.length;
                var seg;
                var top;
                var k;
                segmentContainer[0].innerHTML = daySegHTML(segs); // faster than .html()
                daySegElementResolve(segs, segmentContainer.children());
                daySegElementReport(segs);
                daySegHandlers(segs, segmentContainer, modifiedEventId);
                daySegCalcHSides(segs);
                daySegSetWidths(segs);
                daySegCalcHeights(segs);
                rowDivs = getRowDivs();
                // set row heights, calculate event tops (in relation to row top)
                for (rowI=0; rowI<rowCnt; rowI++) {
                        levelI = 0;
                        colHeights = [];
                        for (j=0; j<colCnt; j++) {
                                colHeights[j] = 0;
                        }
                        while (i<segCnt && (seg = segs[i]).row == rowI) {
                                // loop through segs in a row
                                top = arrayMax(colHeights.slice(seg.startCol, seg.endCol));
                                seg.top = top;
                                top += seg.outerHeight;
                                for (k=seg.startCol; k<seg.endCol; k++) {
                                        colHeights[k] = top;
                                }
                                i++;
                        }
                        rowDivs[rowI].height(arrayMax(colHeights));
                }
                daySegSetTops(segs, getRowTops(rowDivs));
        }
        
        
        function renderTempDaySegs(segs, adjustRow, adjustTop) {
                var tempContainer = $("<div/>");
                var elements;
                var segmentContainer = getDaySegmentContainer();
                var i;
                var segCnt = segs.length;
                var element;
                tempContainer[0].innerHTML = daySegHTML(segs); // faster than .html()
                elements = tempContainer.children();
                segmentContainer.append(elements);
                daySegElementResolve(segs, elements);
                daySegCalcHSides(segs);
                daySegSetWidths(segs);
                daySegCalcHeights(segs);
                daySegSetTops(segs, getRowTops(getRowDivs()));
                elements = [];
                for (i=0; i<segCnt; i++) {
                        element = segs[i].element;
                        if (element) {
                                if (segs[i].row === adjustRow) {
                                        element.css('top', adjustTop);
                                }
                                elements.push(element[0]);
                        }
                }
                return $(elements);
        }
        
        
        function daySegHTML(segs) { // also sets seg.left and seg.outerWidth
                var rtl = opt('isRTL');
                var i;
                var segCnt=segs.length;
                var seg;
                var event;
                var url;
                var classes;
                var bounds = allDayBounds();
                var minLeft = bounds.left;
                var maxLeft = bounds.right;
                var leftCol;
                var rightCol;
                var left;
                var right;
                var skinCss;
                var html = '';
                // calculate desired position/dimensions, create html
                for (i=0; i<segCnt; i++) {
                        seg = segs[i];
                        event = seg.event;
                        classes = ['fc-event', 'fc-event-skin', 'fc-event-hori'];
                        if (isEventDraggable(event)) {
                                classes.push('fc-event-draggable');
                        }
                        if (rtl) {
                                if (seg.isStart) {
                                        classes.push('fc-corner-right');
                                }
                                if (seg.isEnd) {
                                        classes.push('fc-corner-left');
                                }
                                leftCol = dayOfWeekCol(seg.end.getDay()-1);
                                rightCol = dayOfWeekCol(seg.start.getDay());
                                left = seg.isEnd ? colContentLeft(leftCol) : minLeft;
                                right = seg.isStart ? colContentRight(rightCol) : maxLeft;
                        }else{
                                if (seg.isStart) {
                                        classes.push('fc-corner-left');
                                }
                                if (seg.isEnd) {
                                        classes.push('fc-corner-right');
                                }
                                leftCol = dayOfWeekCol(seg.start.getDay());
                                rightCol = dayOfWeekCol(seg.end.getDay()-1);
                                left = seg.isStart ? colContentLeft(leftCol) : minLeft;
                                right = seg.isEnd ? colContentRight(rightCol) : maxLeft;
                        }
                        classes = classes.concat(event.className);
                        if (event.source) {
                                classes = classes.concat(event.source.className || []);
                        }
                        url = event.url;
                        skinCss = getSkinCss(event, opt);
                        if (url) {
                                html += "<a href='" + htmlEscape(url) + "'";
                        }else{
                                html += "<div";
                        }
                        html +=
                                " class='" + classes.join(' ') + "'" +
                                " style='position:absolute;z-index:8;left:"+left+"px;" + skinCss + "'" +
                                ">" +
                                "<div" +
                                " class='fc-event-inner fc-event-skin'" +
                                (skinCss ? " style='" + skinCss + "'" : '') +
                                ">";
                        if (!event.allDay && seg.isStart) {
                                html +=
                                        "<span class='fc-event-time'>" +
                                        htmlEscape(formatDates(event.start, event.end, opt('timeFormat'))) +
                                        "</span>";
                        }
                        html +=
                                "<span class='fc-event-title'>" + htmlEscape(event.title) + "</span>" +
                                "</div>";
                        if (seg.isEnd && isEventResizable(event)) {
                                html +=
                                        "<div class='ui-resizable-handle ui-resizable-" + (rtl ? 'w' : 'e') + "'>" +
                                        "&nbsp;&nbsp;&nbsp;" + // makes hit area a lot better for IE6/7
                                        "</div>";
                        }
                        html +=
                                "</" + (url ? "a" : "div" ) + ">";
                        seg.left = left;
                        seg.outerWidth = right - left;
                        seg.startCol = leftCol;
                        seg.endCol = rightCol + 1; // needs to be exclusive
                }
                return html;
        }
        
        
        function daySegElementResolve(segs, elements) { // sets seg.element
                var i;
                var segCnt = segs.length;
                var seg;
                var event;
                var element;
                var triggerRes;
                for (i=0; i<segCnt; i++) {
                        seg = segs[i];
                        event = seg.event;
                        element = $(elements[i]); // faster than .eq()
                        triggerRes = trigger('eventRender', event, event, element);
                        if (triggerRes === false) {
                                element.remove();
                        }else{
                                if (triggerRes && triggerRes !== true) {
                                        triggerRes = $(triggerRes)
                                                .css({
                                                        position: 'absolute',
                                                        left: seg.left
                                                });
                                        element.replaceWith(triggerRes);
                                        element = triggerRes;
                                }
                                seg.element = element;
                        }
                }
        }
        
        
        function daySegElementReport(segs) {
                var i;
                var segCnt = segs.length;
                var seg;
                var element;
                for (i=0; i<segCnt; i++) {
                        seg = segs[i];
                        element = seg.element;
                        if (element) {
                                reportEventElement(seg.event, element);
                        }
                }
        }
        
        
        function daySegHandlers(segs, segmentContainer, modifiedEventId) {
                var i;
                var segCnt = segs.length;
                var seg;
                var element;
                var event;
                // retrieve elements, run through eventRender callback, bind handlers
                for (i=0; i<segCnt; i++) {
                        seg = segs[i];
                        element = seg.element;
                        if (element) {
                                event = seg.event;
                                if (event._id === modifiedEventId) {
                                        bindDaySeg(event, element, seg);
                                }else{
                                        element[0]._fci = i; // for lazySegBind
                                }
                        }
                }
                lazySegBind(segmentContainer, segs, bindDaySeg);
        }
        
        
        function daySegCalcHSides(segs) { // also sets seg.key
                var i;
                var segCnt = segs.length;
                var seg;
                var element;
                var key, val;
                var hsideCache = {};
                // record event horizontal sides
                for (i=0; i<segCnt; i++) {
                        seg = segs[i];
                        element = seg.element;
                        if (element) {
                                key = seg.key = cssKey(element[0]);
                                val = hsideCache[key];
                                if (val === undefined) {
                                        val = hsideCache[key] = hsides(element, true);
                                }
                                seg.hsides = val;
                        }
                }
        }
        
        
        function daySegSetWidths(segs) {
                var i;
                var segCnt = segs.length;
                var seg;
                var element;
                for (i=0; i<segCnt; i++) {
                        seg = segs[i];
                        element = seg.element;
                        if (element) {
                                element[0].style.width = Math.max(0, seg.outerWidth - seg.hsides) + 'px';
                        }
                }
        }
        
        
        function daySegCalcHeights(segs) {
                var i;
                var segCnt = segs.length;
                var seg;
                var element;
                var key, val;
                var vmarginCache = {};
                // record event heights
                for (i=0; i<segCnt; i++) {
                        seg = segs[i];
                        element = seg.element;
                        if (element) {
                                key = seg.key; // created in daySegCalcHSides
                                val = vmarginCache[key];
                                if (val === undefined) {
                                        val = vmarginCache[key] = vmargins(element);
                                }
                                seg.outerHeight = element[0].offsetHeight + val;
                        }
                }
        }
        
        
        function getRowDivs() {
                var i;
                var rowCnt = getRowCnt();
                var rowDivs = [];
                for (i=0; i<rowCnt; i++) {
                        rowDivs[i] = allDayRow(i)
                                .find('td:first div.fc-day-content > div'); // optimal selector?
                }
                return rowDivs;
        }
        
        
        function getRowTops(rowDivs) {
                var i;
                var rowCnt = rowDivs.length;
                var tops = [];
                for (i=0; i<rowCnt; i++) {
                        tops[i] = rowDivs[i][0].offsetTop; // !!?? but this means the element needs position:relative if in a table cell!!!!
                }
                return tops;
        }
        
        
        function daySegSetTops(segs, rowTops) { // also triggers eventAfterRender
                var i;
                var segCnt = segs.length;
                var seg;
                var element;
                var event;
                for (i=0; i<segCnt; i++) {
                        seg = segs[i];
                        element = seg.element;
                        if (element) {
                                element[0].style.top = rowTops[seg.row] + (seg.top||0) + 'px';
                                event = seg.event;
                                trigger('eventAfterRender', event, event, element);
                        }
                }
        }
        
        
        
        /* Resizing
        -----------------------------------------------------------------------------------*/
        
        
        function resizableDayEvent(event, element, seg) {
                var rtl = opt('isRTL');
                var direction = rtl ? 'w' : 'e';
                var handle = element.find('div.ui-resizable-' + direction);
                var isResizing = false;
                
                // TODO: look into using jquery-ui mouse widget for this stuff
                disableTextSelection(element); // prevent native <a> selection for IE
                element
                        .mousedown(function(ev) { // prevent native <a> selection for others
                                ev.preventDefault();
                        })
                        .click(function(ev) {
                                if (isResizing) {
                                        ev.preventDefault(); // prevent link from being visited (only method that worked in IE6)
                                        ev.stopImmediatePropagation(); // prevent fullcalendar eventClick handler from being called
                                                                       // (eventElementHandlers needs to be bound after resizableDayEvent)
                                }
                        });
                
                handle.mousedown(function(ev) {
                        if (ev.which != 1) {
                                return; // needs to be left mouse button
                        }
                        isResizing = true;
                        var hoverListener = t.getHoverListener();
                        var rowCnt = getRowCnt();
                        var colCnt = getColCnt();
                        var dis = rtl ? -1 : 1;
                        var dit = rtl ? colCnt-1 : 0;
                        var elementTop = element.css('top');
                        var dayDelta;
                        var helpers;
                        var eventCopy = $.extend({}, event);
                        var minCell = dateCell(event.start);
                        clearSelection();
                        $('body')
                                .css('cursor', direction + '-resize')
                                .one('mouseup', mouseup);
                        trigger('eventResizeStart', this, event, ev);
                        hoverListener.start(function(cell, origCell) {
                                if (cell) {
                                        var r = Math.max(minCell.row, cell.row);
                                        var c = cell.col;
                                        if (rowCnt == 1) {
                                                r = 0; // hack for all-day area in agenda views
                                        }
                                        if (r == minCell.row) {
                                                if (rtl) {
                                                        c = Math.min(minCell.col, c);
                                                }else{
                                                        c = Math.max(minCell.col, c);
                                                }
                                        }
                                        dayDelta = (r*7 + c*dis+dit) - (origCell.row*7 + origCell.col*dis+dit);
                                        var newEnd = addDays(eventEnd(event), dayDelta, true);
                                        if (dayDelta) {
                                                eventCopy.end = newEnd;
                                                var oldHelpers = helpers;
                                                helpers = renderTempDaySegs(compileDaySegs([eventCopy]), seg.row, elementTop);
                                                helpers.find('*').css('cursor', direction + '-resize');
                                                if (oldHelpers) {
                                                        oldHelpers.remove();
                                                }
                                                hideEvents(event);
                                        }else{
                                                if (helpers) {
                                                        showEvents(event);
                                                        helpers.remove();
                                                        helpers = null;
                                                }
                                        }
                                        clearOverlays();
                                        renderDayOverlay(event.start, addDays(cloneDate(newEnd), 1)); // coordinate grid already rebuild at hoverListener.start
                                }
                        }, ev);
                        
                        function mouseup(ev) {
                                trigger('eventResizeStop', this, event, ev);
                                $('body').css('cursor', '');
                                hoverListener.stop();
                                clearOverlays();
                                if (dayDelta) {
                                        eventResize(this, event, dayDelta, 0, ev);
                                        // event redraw will clear helpers
                                }
                                // otherwise, the drag handler already restored the old events
                                
                                setTimeout(function() { // make this happen after the element's click event
                                        isResizing = false;
                                },0);
                        }
                        
                });
        }
        

}

//BUG: unselect needs to be triggered when events are dragged+dropped

function SelectionManager() {
        var t = this;
        
        
        // exports
        t.select = select;
        t.unselect = unselect;
        t.reportSelection = reportSelection;
        t.daySelectionMousedown = daySelectionMousedown;
        
        
        // imports
        var opt = t.opt;
        var trigger = t.trigger;
        var defaultSelectionEnd = t.defaultSelectionEnd;
        var renderSelection = t.renderSelection;
        var clearSelection = t.clearSelection;
        
        
        // locals
        var selected = false;



        // unselectAuto
        if (opt('selectable') && opt('unselectAuto')) {
                $(document).mousedown(function(ev) {
                        var ignore = opt('unselectCancel');
                        if (ignore) {
                                if ($(ev.target).parents(ignore).length) { // could be optimized to stop after first match
                                        return;
                                }
                        }
                        unselect(ev);
                });
        }
        

        function select(startDate, endDate, allDay) {
                unselect();
                if (!endDate) {
                        endDate = defaultSelectionEnd(startDate, allDay);
                }
                renderSelection(startDate, endDate, allDay);
                reportSelection(startDate, endDate, allDay);
        }
        
        
        function unselect(ev) {
                if (selected) {
                        selected = false;
                        clearSelection();
                        trigger('unselect', null, ev);
                }
        }
        
        
        function reportSelection(startDate, endDate, allDay, ev) {
                selected = true;
                trigger('select', null, startDate, endDate, allDay, ev);
        }
        
        
        function daySelectionMousedown(ev) { // not really a generic manager method, oh well
                var cellDate = t.cellDate;
                var cellIsAllDay = t.cellIsAllDay;
                var hoverListener = t.getHoverListener();
                var reportDayClick = t.reportDayClick; // this is hacky and sort of weird
                if (ev.which == 1 && opt('selectable')) { // which==1 means left mouse button
                        unselect(ev);
                        var _mousedownElement = this;
                        var dates;
                        hoverListener.start(function(cell, origCell) { // TODO: maybe put cellDate/cellIsAllDay info in cell
                                clearSelection();
                                if (cell && cellIsAllDay(cell)) {
                                        dates = [ cellDate(origCell), cellDate(cell) ].sort(cmp);
                                        renderSelection(dates[0], dates[1], true);
                                }else{
                                        dates = null;
                                }
                        }, ev);
                        $(document).one('mouseup', function(ev) {
                                hoverListener.stop();
                                if (dates) {
                                        if (+dates[0] == +dates[1]) {
                                                reportDayClick(dates[0], true, ev);
                                        }
                                        reportSelection(dates[0], dates[1], true, ev);
                                }
                        });
                }
        }


}
 
function OverlayManager() {
        var t = this;
        
        
        // exports
        t.renderOverlay = renderOverlay;
        t.clearOverlays = clearOverlays;
        
        
        // locals
        var usedOverlays = [];
        var unusedOverlays = [];
        
        
        function renderOverlay(rect, parent) {
                var e = unusedOverlays.shift();
                if (!e) {
                        e = $("<div class='fc-cell-overlay' style='position:absolute;z-index:3'/>");
                }
                if (e[0].parentNode != parent[0]) {
                        e.appendTo(parent);
                }
                usedOverlays.push(e.css(rect).show());
                return e;
        }
        

        function clearOverlays() {
                var e;
                while (e = usedOverlays.shift()) {
                        unusedOverlays.push(e.hide().unbind());
                }
        }


}

function CoordinateGrid(buildFunc) {

        var t = this;
        var rows;
        var cols;
        
        
        t.build = function() {
                rows = [];
                cols = [];
                buildFunc(rows, cols);
        };
        
        
        t.cell = function(x, y) {
                var rowCnt = rows.length;
                var colCnt = cols.length;
                var i, r=-1, c=-1;
                for (i=0; i<rowCnt; i++) {
                        if (y >= rows[i][0] && y < rows[i][1]) {
                                r = i;
                                break;
                        }
                }
                for (i=0; i<colCnt; i++) {
                        if (x >= cols[i][0] && x < cols[i][1]) {
                                c = i;
                                break;
                        }
                }
                return (r>=0 && c>=0) ? { row:r, col:c } : null;
        };
        
        
        t.rect = function(row0, col0, row1, col1, originElement) { // row1,col1 is inclusive
                var origin = originElement.offset();
                return {
                        top: rows[row0][0] - origin.top,
                        left: cols[col0][0] - origin.left,
                        width: cols[col1][1] - cols[col0][0],
                        height: rows[row1][1] - rows[row0][0]
                };
        };

}

function HoverListener(coordinateGrid) {


        var t = this;
        var bindType;
        var change;
        var firstCell;
        var cell;
        
        
        t.start = function(_change, ev, _bindType) {
                change = _change;
                firstCell = cell = null;
                coordinateGrid.build();
                mouse(ev);
                bindType = _bindType || 'mousemove';
                $(document).bind(bindType, mouse);
        };
        
        
        function mouse(ev) {
                _fixUIEvent(ev); // see below
                var newCell = coordinateGrid.cell(ev.pageX, ev.pageY);
                if (!newCell != !cell || newCell && (newCell.row != cell.row || newCell.col != cell.col)) {
                        if (newCell) {
                                if (!firstCell) {
                                        firstCell = newCell;
                                }
                                change(newCell, firstCell, newCell.row-firstCell.row, newCell.col-firstCell.col);
                        }else{
                                change(newCell, firstCell);
                        }
                        cell = newCell;
                }
        }
        
        
        t.stop = function() {
                $(document).unbind(bindType, mouse);
                return cell;
        };
        
        
}



// this fix was only necessary for jQuery UI 1.8.16 (and jQuery 1.7 or 1.7.1)
// upgrading to jQuery UI 1.8.17 (and using either jQuery 1.7 or 1.7.1) fixed the problem
// but keep this in here for 1.8.16 users
// and maybe remove it down the line

function _fixUIEvent(event) { // for issue 1168
        if (event.pageX === undefined) {
                event.pageX = event.originalEvent.pageX;
                event.pageY = event.originalEvent.pageY;
        }
}
function HorizontalPositionCache(getElement) {

        var t = this,
                elements = {},
                lefts = {},
                rights = {};
                
        function e(i) {
                return elements[i] = elements[i] || getElement(i);
        }
        
        t.left = function(i) {
                return lefts[i] = lefts[i] === undefined ? e(i).position().left : lefts[i];
        };
        
        t.right = function(i) {
                return rights[i] = rights[i] === undefined ? t.left(i) + e(i).width() : rights[i];
        };
        
        t.clear = function() {
                elements = {};
                lefts = {};
                rights = {};
        };
        
}

})(jQuery);