fullcalendar.js

/**
 * @preserve
 * FullCalendar ResourceViews version 1.5.3.3
 * http://tux.fi/~jarnok/fullcalendar-resourceviews/
 * 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) 2012 Jarno Kurlin
 * Copyright (c) 2011 Adam Shaw
 * Dual licensed under the MIT and GPL licenses, located in
 * MIT-LICENSE.txt and GPL-LICENSE.txt respectively.
 *
 * Date: Sun Nov 4 20:02:44 2012 +0200
 *
 */

(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',

  // resource ajax
  refetchResources: false,

  // time formats
  titleFormat: {
    month: 'MMMM yyyy',
    week: "MMM d[ yyyy]{ '—'[ MMM] d yyyy}",
    day: 'dddd, MMM d, yyyy',
    resourceMonth: 'MMMM yyyy',
    resourceWeek: "MMM d[ yyyy]{ '—'[ MMM] d yyyy}",
    resourceNextWeeks: "MMM d[ yyyy]{ '—'[ MMM] d yyyy}",
    resourceDay: 'dddd, MMM d, yyyy'
  },
  columnFormat: {
    month: 'ddd',
    week: 'ddd M/d',
    day: 'dddd M/d',
    resourceDay: 'H:mm',
    resourceMonth: 'M/d',
    resourceWeek: 'ddd M/d',
    resourceNextWeeks: 'ddd 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',
    /*
    resourceDay: 'resource day',
    resourceWeek: 'resource week',
    resourceNextWeeks: 'resource next weeks',
    resourceMonth: 'resource month'
    */
    resourceDay: 'päivä',
    resourceWeek: 'viikko',
    resourceNextWeeks: '2 viikkoa',
    resourceMonth: 'kuukausi'
  },

  // jquery-ui theming
  theme: false,
  buttonIcons: {
    prev: 'circle-triangle-w',
    next: 'circle-triangle-e'
  },

  //selectable: false,
  unselectAuto: true,

  dropAccept: '*',

  // ResourceNextWeeks week count
  numberOfWeeks: 2,
  weekPrefix: 'Viikko'

};

// 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: "1.5.3.3" };
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, resourceSources) {
  var t = this;


  // exports
  t.options = options;
  t.render = render;
  t.destroy = destroy;
  t.refetchEvents = refetchEvents;
  t.reportEvents = reportEvents;
  t.refetchResources = refetchResources;
  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;

  // fetch resources
  ResourceManager.call(t, options);
  var fetchResources = t.fetchResources;

  // 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();
      if (options['refetchResources']) refetchResources(); // refetch resources every time new events are loaded
    }
    else if (forceRender) {
      rerenderEvents();
    }
  }


  function refetchEvents() {
    fetchEvents(currentView.visStart, currentView.visEnd); // will call reportEvents
  }

  function refetchResources() {
    fetchResources(false, currentView);

    // we have to destroy all view instances and recreate current one
    viewInstances = [];

    // remove current view from display
    currentView.element.remove();

    // create current view again
    currentView = viewInstances[currentView.name] = new fcViews[currentView.name](
          absoluteViewElement =
            $("<div class='fc-view fc-view-" + currentView.name + "' style='position:absolute'/>")
              .appendTo(content),
          t // the calendar object
        );
    // let's render the new view
    renderView();
  }

  // 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, getView());
    }
  }


  function popLoading() {
    if (!--loadingLevel) {
      trigger('loading', null, false, getView());
    }
  }



  /* 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;
  }


}
/*
 * Responsible for resources.  Resource source object is anything that provides
 * data about resources.  It can be function, a JSON object or URL to a JSON
 * feed.
*/


function ResourceManager(options) {
    var t = this;

    // exports
    t.fetchResources = fetchResources;

    // local
    var sources = [];  // source array
    var cache;  // cached resources

    _addResourceSources(options['resources']);


    /**
     * ----------------------------------------------------------------
     * Categorize and add the provided sources
     * ----------------------------------------------------------------
     */
    function _addResourceSources(_sources) {
        var source = {};

        if ($.isFunction(_sources)) {
            // is it a function?
            source = {
                resources: _sources
            };
            sources.push(source);
        } else if (typeof _sources == 'string') {
            // is it a URL string?
            source = {
                url: _sources
            };
            sources.push(source);
        } else if (typeof _sources == 'object') {
            // is it json object?
            for (var i=0; i<_sources.length; i++) {
                var s = _sources[i];
                normalizeSource(s);
                source = {
                    resources: s
                };
                sources.push(source);
            }
        }
    }


    /**
     * ----------------------------------------------------------------
     * Fetch resources from source array
     * ----------------------------------------------------------------
     */
    function fetchResources(useCache, currentView) {
        // if useCache is not defined, default to true
        useCache = typeof useCache !== 'undefined' ? useCache : true;

        if (cache != undefined && useCache) {
            // get from cache
            return cache;
        } else {
            // do a fetch resource from source, rebuild cache
            cache = [];
            var len = sources.length;
            for (var i = 0; i < len; i++) {
                var resources = _fetchResourceSource(sources[i], currentView);
                cache = cache.concat(resources);
            }
            return cache;
        }
    }


    /**
     * ----------------------------------------------------------------
     * Fetch resources from each source.  If source is a function, call
     * the function and return the resource.  If source is a URL, get
     * the data via synchronized ajax call.  If the source is an
     * object, return it as is.
     * ----------------------------------------------------------------
     */
    function _fetchResourceSource(source, currentView) {
        var resources = source.resources;

        if (resources) {
            if ($.isFunction(resources)) {
                return resources();
            }
        } else {
            var url = source.url;
            if (url) {
                var data={};
                if (typeof currentView == 'object') {
                    var startParam = options.startParam;
                    var endParam = options.endParam;
                    if (startParam) {
                        data[startParam] = Math.round(+currentView.visStart / 1000);
                    }
                    if (endParam) {
                        data[endParam] = Math.round(+currentView.visEnd / 1000);
                    }
                }

                $.ajax($.extend({}, source, {
                    data: data,
                    dataType: 'json',
                    cache: false,
                    success: function(res) {
                        res = res || [];
                        resources = res;
                    },
                    error: function() {
                        alert("ajax error getting json from "+url);
                    },
                    async: false  // too much work coordinating callbacks so dumb it down
                }));
            }
        }
        return resources;
    }


    /**
     * ----------------------------------------------------------------
     * normalize the source object
     * ----------------------------------------------------------------
     */
    function normalizeSource(source) {
        if (source.className) {
            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);
        }
    }
}

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 addWeeks(d, n, keepTime) {
  addDays(d, n * 7, keepTime);
  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);
  }
}


/* thanks jQuery UI (https://github.com/jquery/jquery-ui/blob/master/ui/jquery.ui.datepicker.js)
 *
 * Set as calculateWeek to determine the week of the year based on the ISO 8601 definition.
 * @param  date  Date - the date to get the week for
 * @return  number - the number of the week within the year that contains this date
 */
function getWeek(date) {
  var time;
  var checkDate = new Date(date.getTime());

  // Find Thursday of this week starting on Monday
  checkDate.setDate(checkDate.getDate() + 4 - (checkDate.getDay() || 7));

  time = checkDate.getTime();
  checkDate.setMonth(0); // Compare with Jan 1
  checkDate.setDate(1);
  return Math.floor(Math.round((time - checkDate) / 86400000) / 7) + 1;
}

/* 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()] },
  W   : function(d)   { return getWeek(d) },
  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)));
  }
}


// TODO: curCSS has been deprecated (jQuery 1.4.3 - 10/16/2010)


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


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


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


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


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


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


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


function vborders(element) {
  return (parseFloat($.curCSS(element[0], 'borderTopWidth', true)) || 0) +
         (parseFloat($.curCSS(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-id' + date); // I don't understand why do we need dayID which is not date?
  });
}


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.getViewName = function() { return viewName };
  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.resourceDay = ResourceDayView;

function ResourceDayView(element, calendar) {
  var t = this;


  // exports
  t.render = render;


  // imports
  ResourceView.call(t, element, calendar, 'resourceDay');
  var opt = t.opt;
  var renderBasic = t.renderBasic;
  var formatDates = calendar.formatDates;
  var getResources = t.getResources;


  function render(date, delta) {
    if (delta) {
      addDays(date, delta * 1);
      if (!opt('weekends')) skipWeekend(date, delta < 0 ? -1 : 1);
    }

    var start = addMinutes(cloneDate(date, true),parseTime(opt('minTime')));
    var end = addMinutes(cloneDate(start), (parseTime(opt('maxTime'))-parseTime(opt('minTime'))));
    var visStart = cloneDate(start);
    var visEnd = cloneDate(end);

    t.title = formatDates(
      visStart,
      addDays(cloneDate(visEnd), -1),
      opt('titleFormat')
    );
    t.start = start;
    t.end = end;
    t.visStart = visStart;
    t.visEnd = visEnd;

    var cols = Math.round((visEnd - visStart) / 1000 / 60 / opt('slotMinutes'));
    renderBasic(getResources.length, getResources.length, cols, false);
  }


}

fcViews.resourceWeek = ResourceWeekView;

function ResourceWeekView(element, calendar) {
  var t = this;


  // exports
  t.render = render;


  // imports
  ResourceView.call(t, element, calendar, 'resourceWeek');
  var opt = t.opt;
  var renderBasic = t.renderBasic;
  var formatDates = calendar.formatDates;
  var getResources = t.getResources;


  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(getResources.length, getResources.length, weekends ? 7 : 5, false);
  }


}
/*
   Shows this week and next N weeks
*/
fcViews.resourceNextWeeks = ResourceNextWeeksView;

function ResourceNextWeeksView(element, calendar) {
  var t = this;


  // exports
  t.render = render;


  // imports
  ResourceView.call(t, element, calendar, 'resourceNextWeeks');
  var opt = t.opt;
  var renderBasic = t.renderBasic;
  var formatDates = calendar.formatDates;
  var getResources = t.getResources;


  function render(date, delta) {
    var weekends = opt('weekends');
    if (delta) {
      addDays(date, delta * opt('numberOfWeeks') * (weekends ? 7 : 5));
    }
    var start = addDays(cloneDate(date), -((date.getDay() - opt('firstDay') + weekends ? 7 : 5) % (weekends ? 7 : 5)));
    var end = addWeeks(cloneDate(start), opt('numberOfWeeks'));
    var visStart = cloneDate(start);
    var visEnd = cloneDate(end);

    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(getResources.length, getResources.length, (weekends ? opt('numberOfWeeks') * 7 : opt('numberOfWeeks') * 5), false);
  }


}

fcViews.resourceMonth = ResourceMonthView;

function ResourceMonthView(element, calendar) {
  var t = this;


  // exports
  t.render = render;


  // imports
  ResourceView.call(t, element, calendar, 'resourceMonth');
  var opt = t.opt;
  var renderBasic = t.renderBasic;
  var formatDates = calendar.formatDates;
  var getResources = t.getResources;


  function render(date, delta) {
    if (delta) {
      addMonths(date, delta * 1);
      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 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;
    var cols = Math.round((visEnd - visStart) / (DAY_MS));
    var weekendTestDate;
    if(!weekends) {
      // Drop out weekends from cols
      var weekendCnt = 0;
      for(var i=1; i<=cols; i++) {
        weekendTestDate = addDays(cloneDate(visStart), i);
        if(weekendTestDate.getDay() == 0 || weekendTestDate.getDay() == 6) {
          weekendCnt++;
        }
      }
      cols -= weekendCnt;
    }

    renderBasic(getResources.length, getResources.length, cols, false);
  }


}

setDefaults({
  weekMode: 'fixed'
});


function ResourceView(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.timeOfDayCol = timeOfDayCol;
  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.getResources = calendar.fetchResources();
  t.getColWidth = function() { return colWidth };
  t.getViewName = function() { return viewName };
  t.getDaySegmentContainer = function() { return daySegmentContainer };


  // imports
  View.call(t, element, calendar, viewName);
  OverlayManager.call(t);
  SelectionManager.call(t);
  ResourceEventRenderer.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, getResources;
  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 || viewName == 'resourceMonth') {
      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, id, resourceName;
    var table;
    var resources = t.getResources;
    s =
      "<table class='fc-border-separate' style='width:100%' cellspacing='0'>" +
      "<thead>" +
      "<tr class='fc-first fc-last'><th class='fc-resourceName'>&nbsp;</th>";
    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++) {
      id = resources[i]['id'];
      resourceName = resources[i]['name'];
      s +=
        "<tr class='fc-week" + id + "'><td class='fc-resourceName'>" + resourceName + "</td>";
      for (j=0; j<colCnt; j++) {
        s +=
          "<td class='fc- " + contentClass + " fc-day" + j + " fc-resource" + id +"'>" + // 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 = element.html($(s));

    head = table.find('thead');
    headCells = head.find('th:not(th.fc-resourceName)');
    body = table.find('tbody');
    bodyRows = body.find('tr');
    bodyCells = body.find('td:not(td.fc-resourceName)');
    bodyFirstCells = bodyRows.children().filter(':first-child');
    bodyCellTopInners = bodyRows.eq(0).find('div.fc-day-content div');

    // marks first+last th's
    headCells
      .removeClass('fc-first fc-last')
      .filter(':first')
      .addClass('fc-first')
      .end()
      .filter(':last')
      .addClass('fc-last');

    // marks first+last td's from each row
    bodyCells.removeClass('fc-first fc-last');
    bodyRows.each(function() {
      $(this).children('td:not(td.fc-resourceName):first').addClass('fc-first');
      $(this).children('td:not(td.fc-resourceName):last').addClass('fc-last');
    });
    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 month = t.start.getMonth();
    var today = clearTime(new Date());
    var cell;
    var date;
    var row;
    var weekendTester;
    var indexCorrecter=0;
    var weekends = opt('weekends');
    headCells.each(function(i, _cell) {
      cell = $(_cell);
      date = indexDate(i);

      cell.html(formatDate(date, colFormat));
      if (date.getDay() == 0 || date.getDay() == 6) {
        cell.addClass('fc-weekend');
      }
      if (date.getDay() == 1 && viewName == "resourceNextWeeks") {
        cell.html(cell.html()+'<br>'+opt('weekPrefix')+' '+getWeek(date));
      }

      setDayID(cell, i);
    });

    indexCorrecter=0;
    bodyCells.each(function(i, _cell) {
      cell = $(_cell);
      date = indexDate(i);

      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());
      setDayID(cell, i);
    });

    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;
    // minus resourceName width
    viewWidth -= $('th.fc-resourceName').css('width').replace('px','');
    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, overlayRow) { // overlayEnd is exclusive
    if (refreshCoordinateGrid) {
      coordinateGrid.build();
    }
    var rowStart = cloneDate(t.visStart);
    var rowEnd = addDays(cloneDate(rowStart), colCnt);

    if (viewName == 'resourceDay') {
      rowEnd = addMinutes(cloneDate(rowStart), opt('slotMinutes')*colCnt);
    }
    else if (!opt('weekends')) {
      rowEnd = cloneDate(t.visEnd);
    }

    var stretchStart = new Date(Math.max(rowStart, overlayStart));
    var stretchEnd = new Date(Math.min(rowEnd, overlayEnd));

    if (stretchStart < stretchEnd) {
      var colStart, colEnd;
      if (viewName == 'resourceDay') {
        colStart = (stretchStart-rowStart)/1000/60/opt('slotMinutes');
        colEnd = (stretchEnd-rowStart)/1000/60/opt('slotMinutes');
      }
      else {
        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);
        }

        if(!opt('weekends')) {
          // Drop weekends off
          var weekendSumColStart=0, weekendTestDate;
          for(var i=0; i<=colStart; i++) {
            weekendTestDate = addDays(cloneDate(t.visStart), i);

            if(weekendTestDate.getDay() == 0 || weekendTestDate.getDay() == 6) {
              weekendSumColStart++;
            }
          }
          colStart -= weekendSumColStart;

          var weekendSumColEnd=0
          for(i=0; i<=colEnd-1; i++) {
            weekendTestDate = addDays(cloneDate(t.visStart), i);

            if(weekendTestDate.getDay() == 0 || weekendTestDate.getDay() == 6) {
              weekendSumColEnd++;
            }
          }
          colEnd -= weekendSumColEnd;
        }
      }

      dayBind(
        renderCellOverlay(overlayRow, colStart, overlayRow, colEnd-1)
      );
    }
  }


  function renderCellOverlay(row0, col0, row1, col1) { // row1,col1 is inclusive
    var rect = coordinateGrid.rect(row0, Math.round(col0), row1, Math.round(col1), element);
    return renderOverlay(rect, element);
  }



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


  function defaultSelectionEnd(startDate, allDay) {
    return cloneDate(startDate);
  }


  function renderSelection(startDate, endDate, allDay, overlayRow) {
    if (viewName == 'resourceDay') {
      renderDayOverlay(startDate, addMinutes(cloneDate(endDate), opt('slotMinutes')), true, overlayRow); // rebuild every time???
    }
    else {
      renderDayOverlay(startDate, addDays(cloneDate(endDate), 1), true, overlayRow); // rebuild every time???
    }
  }


  function clearSelection() {
    clearOverlays();
  }


  function reportDayClick(date, allDay, ev, resource) {
    var cell = dateCell(date);
    var _element = bodyCells[cell.col];
    trigger('dayClick', _element, date, allDay, ev, resource);
  }



  /* 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 resources = t.getResources, newResource = resources[cell.row];
      var d = cellDate(cell);
      trigger('drop', _dragElement, d, true, ev, ui, newResource);
    }
  }



  /* 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) {
    var col,year,month,day,cmpDate,cmpYear,cmpMonth,cmpDay, weekends = opt('weekends');
    if (viewName == 'resourceDay') {
      col = timeOfDayCol(date);
    }
    else if (viewName == 'resourceNextWeeks') {
      // Start from first slot and test every date
      year = date.getFullYear();
      month = date.getMonth();
      day = date.getDate();

      for (var i=0; i < colCnt; i++) {
        cmpDate = _cellDate(i);
        cmpYear = cmpDate.getFullYear();
        cmpMonth = cmpDate.getMonth();
        cmpDay = cmpDate.getDate();

        if (year == cmpYear && month == cmpMonth && day == cmpDay) {
          col = i;
          break;
        }
        else if (cmpDate > date && !weekends) {
          // No weekends in the calendar, this must be the right column!
          col = i-1;
          break;
        }
      };

      if (typeof col == 'undefined') {
        // date is in next weekview, select last column
        col = i;
      }
    }
    else {
      col = dayOfWeekCol(date.getDay());
    }
    return { col: col };
  }


  function cellDate(cell) {
    return _cellDate(cell.col);
  }


  function _cellDate(col) {
    if (viewName == 'resourceDay') {
      return addMinutes(cloneDate(t.visStart), col*opt('slotMinutes'));
    }
    else {
      if (!opt('weekends')) {
        // no weekends
        var dateTest, i;

        for (i=0; i <= col; i++) {
          dateTest = addDays(cloneDate(t.visStart), i);

          if (dateTest.getDay() == 6 || dateTest.getDay() == 0) {
            // this sunday or saturday
            col++;
          }
        }
      }

      return addDays(cloneDate(t.visStart), col, true);
    }
  }


  function indexDate(index) {
    return _cellDate(index%colCnt);
  }

  function dayOfWeekCol(dayOfWeek) {
    return ((dayOfWeek - Math.max(firstDay, nwe) + colCnt) % colCnt) * dis + dit;
  }

  function timeOfDayCol(datetime) {
    var hours = datetime.getHours();
    var minutes = datetime.getMinutes();
    var slotMinutes = opt('slotMinutes');
    var slot, diff, minDiff, closestMinute;

    // round minutes to closest minuteslot
    for ( var i = 0 ; i <= 60/slotMinutes; i++) {
      slot = i*slotMinutes;

      diff = Math.abs(slot-minutes);

      if (diff <= minDiff || i == 0) {
        minDiff = diff;
        closestMinute = slot;
      }

      if(closestMinute == 60) {
        hours++;
        closestMinute = 0;
      }
    }
    minutes = closestMinute;



    for ( var i = 0; i < colCnt; i++) {
      if (indexDate(i).getHours() == hours && indexDate(i).getMinutes() == minutes) {
        return i;
      }
    }

    // not in range, return max
    return colCnt;
  }


  function allDayRow(i) {
    return bodyRows.eq(i);
  }


  function allDayBounds(i) {
    var resourceNameColWidth = parseInt($(head).find('th.fc-resourceName').css('width').replace('px',''));
    return {
      left: resourceNameColWidth,
      right: (viewWidth+resourceNameColWidth)
    };
  }


}

function ResourceEventRenderer() {
  var t = this;


  // exports
  t.renderEvents = renderEvents;
  t.compileDaySegs = compileSegs; // for DayEventRenderer
  t.clearEvents = clearEvents;
  t.bindDaySeg = bindDaySeg;
  t.resizableResourceEvent = resizableResourceEvent;


  // 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 getViewName = t.getViewName;
  var renderDaySegs = t.renderDaySegs;
  var dateCell = t.dateCell;
  var clearSelection = t.clearSelection;
  var eventEnd = t.eventEnd;
  var renderTempDaySegs = t.renderTempDaySegs;
  var compileDaySegs = t.compileDaySegs;
  var eventResize = t.eventResize;



  /* Rendering
  --------------------------------------------------------------------*/


  function renderEvents(events, modifiedEventId) {
    reportEvents(events);
    renderDaySegs(compileSegs(events), modifiedEventId);
  }


  function clearEvents() {
    reportEventClear();
    getDaySegmentContainer().empty();
  }


  function compileSegs(events) {
    var rowCnt = getRowCnt(),
      colCnt = getColCnt(),
      resources = t.getResources,
      d1 = cloneDate(t.visStart),
      d2 = cloneDate(t.visEnd),
      visEventsEnds = $.map(events, exclEndDay),
      i, row,
      j, level,
      k, seg, currentResource, viewName = getViewName(),
      l, segs=[],
      weekends = opt('weekends'),
      startDay, endDay, startDate, endDate;

    if (viewName == 'resourceDay') {
      visEventsEnds = $.map(events, function(event) {
        return event.end || addDays(event.start, 1);
      });
    }

    for (i=0; i<rowCnt; i++) {
      currentResource = resources[i].id;
      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

          // Let's be backwards compatitle. If event resource is not array, then we convert it.
          if (!$.isArray(seg.event.resource)) {
            seg.event.resource = [seg.event.resource];
          }

          for (l=0; l<seg.event.resource.length; l++) {
            startDay = seg.event.start.getDay();
            startDate = seg.event.start.getDate();
            if (seg.event.end == null) {
              endDay = seg.event.start.getDay();
              endDate = cloneDate(seg.event.start, true).getDate();
            }
            else {
              endDay = seg.event.end.getDay();
              endDate = seg.event.end.getDate();
            }

            // skip if weekends is set to false and this event is on weekend
            if(!weekends &&
              (startDay == 6 || startDay == 0) &&
              (endDay == 6 || endDay == 0) &&
              (startDate == endDate || addDays(cloneDate(seg.event.start),1).getDate() == endDate)
            ) continue;


            if(currentResource == seg.event.resource[l]) {
              segs.push(seg);
            }
          }
        }
      }
    }
    return segs;
  }


  function bindDaySeg(event, eventElement, seg) {
    if (isEventDraggable(event)) {
      draggableResourceEvent(event, eventElement);
    }
    if (seg.isEnd && isEventResizable(event)) {
      resizableResourceEvent(event, eventElement, seg);
    }
    eventElementHandlers(event, eventElement);
      // needs to be after, because resizableDayEvent might stopImmediatePropagation on click
  }



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


  function draggableResourceEvent(event, eventElement) {
    var hoverListener = getHoverListener();
    var dayDelta, minuteDelta, resourceDelta, newResourceId, resources = t.getResources, viewName = getViewName(), weekendTestDate, daysToAdd, daysToDel, dayDeltaStart, dayDeltaEnd, i;

    var denyEventDragging = false;
    $(resources).each(function(i, resource) {
      if (resource.id == event.resource && resource.readonly) {
        denyEventDragging = true;
      }
    });

    eventElement.draggable({
      zIndex: 9,
      delay: 50,
      disabled: denyEventDragging,
      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 || resources[cell.row].readonly === true);

          clearOverlays();

          if (cell && !resources[cell.row].readonly) {
            //setOverflowHidden(true);
            resourceDelta = rowDelta;
            newResourceId = resources[cell.row].id;

            if (viewName == 'resourceDay') {
              minuteDelta = colDelta * (opt('isRTL') ? -1 : 1) * opt('slotMinutes');
              renderDayOverlay(
                addMinutes(cloneDate(event.start), minuteDelta),
                addMinutes(cloneDate(event.end), minuteDelta),
                false,
                cell.row
              );
            }
            else {
              dayDelta = dayDeltaStart = dayDeltaEnd = colDelta * (opt('isRTL') ? -1 : 1);

              // If weekends are not within, add or remove days from dayDelta. Is there a better way?
              if (!opt('weekends') && (dayDelta > 0 || dayDelta < 0)) {
                if (dayDelta > 0) {
                  for(i=1; i<=dayDeltaStart; i++) {
                    weekendTestDate = addDays(cloneDate(event.start), i);
                    if (weekendTestDate.getDay() == 6 || weekendTestDate.getDay() == 0) dayDeltaStart++;
                  }

                  for(i=1; i<=dayDeltaEnd; i++) {
                    weekendTestDate = addDays(cloneDate(event.end), i);
                    if (weekendTestDate.getDay() == 6 || weekendTestDate.getDay() == 0) dayDeltaEnd++;
                  }
                }
                else {
                  for(i=-1; i>=dayDeltaStart; i--) {
                    weekendTestDate = addDays(cloneDate(event.start), i);
                    if (weekendTestDate.getDay() == 6 || weekendTestDate.getDay() == 0) dayDeltaStart--;
                  }

                  for(i=-1; i>=dayDeltaEnd; i--) {
                    weekendTestDate = addDays(cloneDate(event.end), i);
                    if (weekendTestDate.getDay() == 6 || weekendTestDate.getDay() == 0) dayDeltaEnd--;
                  }
                }
              }

              renderDayOverlay(
                addDays(cloneDate(event.start), dayDeltaStart),
                addDays(exclEndDay(event), dayDeltaEnd),
                false,
                cell.row
              );
            }
          }else{
            //setOverflowHidden(false);
            minuteDelta = 0;
            dayDelta = 0;
            resourceDelta = 0;
          }
        }, ev, 'drag');
      },
      stop: function(ev, ui) {
        hoverListener.stop();
        clearOverlays();
        trigger('eventDragStop', eventElement, event, ev, ui);
        if (viewName == 'resourceDay' && (minuteDelta || resourceDelta)) {
          eventDrop(this, event, 0, minuteDelta, event.allDay, ev, ui, newResourceId);
        }
        else if (dayDelta || resourceDelta) {
          if (!opt('weekends')) {
            // We have to add or remove days from event.start and event.end. Is there a better way?
            if (dayDelta > 0) {
              daysToAdd = 0;
              for(i=1; i<=dayDelta+daysToAdd; i++) {
                weekendTestDate = addDays(cloneDate(event.start), i);
                if (weekendTestDate.getDay() == 6 || weekendTestDate.getDay() == 0) daysToAdd++;
              }
              if (daysToAdd > 0) event.start = addDays(cloneDate(event.start), daysToAdd, true);

              daysToAdd = 0;
              for(i=1; i<=dayDelta+daysToAdd; i++) {
                weekendTestDate = addDays(cloneDate(event.end), i);
                if (weekendTestDate.getDay() == 6 || weekendTestDate.getDay() == 0) daysToAdd++;
              }
              if (daysToAdd > 0) event.end = addDays(cloneDate(event.end), daysToAdd, true);
            }
            else {
              daysToDel = 0;
              for(i=-1; i>=dayDelta+daysToDel; i--) {
                weekendTestDate = addDays(cloneDate(event.start), i);
                if (weekendTestDate.getDay() == 6 || weekendTestDate.getDay() == 0) daysToDel--;
              }
              if (daysToDel < 0) event.start = addDays(cloneDate(event.start), daysToDel, true);

              daysToDel = 0;
              for(i=-1; i>=dayDelta+daysToDel; i--) {
                weekendTestDate = addDays(cloneDate(event.end), i);
                if (weekendTestDate.getDay() == 6 || weekendTestDate.getDay() == 0) daysToDel--;
              }
              if (daysToDel < 0) event.end = addDays(cloneDate(event.end), daysToDel, true);
            }
          }
          eventDrop(this, event, dayDelta, 0, event.allDay, ev, ui, newResourceId);
        } else{
          eventElement.css('filter', ''); // clear IE opacity side-effects
          showEvents(event, eventElement);
        }
        //setOverflowHidden(false);
      }
    });
  }


  /* Resizing
  (Same as in DayEventRenderer, but row is passed in renderDayOverlay function)
  -----------------------------------------------------------------------------------*/


  function resizableResourceEvent(event, element, seg) {
    var rtl = opt('isRTL');
    var direction = rtl ? 'w' : 'e';
    var handle = element.find('div.ui-resizable-' + direction);
    var isResizing = false;

    // let's check if resource is readonly?
    var denyEventResizing = false;
    $(t.getResources).each(function(i, resource) {
      if (resource.id == event.resource && resource.readonly) {
        denyEventResizing = true;
      }
    });

    if (denyEventResizing) return 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 viewName = getViewName();
      var dis = rtl ? -1 : 1;
      var dit = rtl ? colCnt-1 : 0;
      var elementTop = element.css('top');
      var dayDelta, dayDeltaStart, dayDeltaEnd;
      var minuteDelta;
      var helpers;
      var eventCopy = $.extend({}, event);
      var minCell = dateCell(event.start);
      var newEnd;
      var weekendTestDate;

      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 (viewName == 'resourceDay') {
            minuteDelta = (opt('slotMinutes') * c*dis+dit) - (opt('slotMinutes') * origCell.col*dis+dit);
            var newEnd = addMinutes(eventEnd(event), minuteDelta, true);
          }
          else {
            dayDelta = dayDeltaStart = dayDeltaEnd = (7 + c*dis+dit) - (7 + origCell.col*dis+dit);

            // If weekends is set to false, add or remove days from dayDelta
            if (!opt('weekends') && (dayDelta > 0 || dayDelta < 0)) {
              if (dayDelta > 0) {
                for(var i=1; i<=dayDeltaEnd; i++) {
                  weekendTestDate = addDays(cloneDate(event.end), i);
                  if (weekendTestDate.getDay() == 6 || weekendTestDate.getDay() == 0) dayDeltaEnd++;
                }
              }
              else {
                for(i=-1; i>=dayDeltaEnd; i--) {
                  weekendTestDate = addDays(cloneDate(event.end), i);
                  if (weekendTestDate.getDay() == 6 || weekendTestDate.getDay() == 0) dayDeltaEnd--;
                }
              }
            }
            newEnd = addDays(eventEnd(event), dayDeltaEnd, true);

          }

          if (dayDelta || minuteDelta) {
            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();

          if (viewName == 'resourceDay') {
            renderDayOverlay(event.start, addMinutes(cloneDate(newEnd), 0), 1, origCell.row); // coordinate grid already rebuild at hoverListener.start
          }
          else {
            renderDayOverlay(event.start, addDays(cloneDate(newEnd), 1), 1, origCell.row); // coordinate grid already rebuild at hoverListener.start
          }
        }
      }, ev);

      function mouseup(ev) {
        trigger('eventResizeStop', this, event, ev);
        $('body').css('cursor', '');
        hoverListener.stop();
        clearOverlays();

        if (dayDelta) {
          if (!opt('weekends')) {
            // We have to add or remove days from event.end. Is there a better way?
            if (dayDelta > 0) {
              var daysToAdd = 0;
              for(var i=1; i<=dayDelta+daysToAdd; i++) {
                weekendTestDate = addDays(cloneDate(event.end), i);
                if (weekendTestDate.getDay() == 6 || weekendTestDate.getDay() == 0) daysToAdd++;
              }
              if (daysToAdd > 0) event.end = addDays(cloneDate(event.end), daysToAdd, true);
            }
            else {
              var daysToDel = 0;
              for(i=-1; i>=dayDelta+daysToDel; i--) {
                weekendTestDate = addDays(cloneDate(event.end), i);
                if (weekendTestDate.getDay() == 6 || weekendTestDate.getDay() == 0) daysToDel--;
              }
              if (daysToDel < 0) event.end = addDays(cloneDate(event.end), daysToDel, true);
            }
          }

          eventResize(this, event, dayDelta, 0, ev);
          // event redraw will clear helpers
        }
        else if (minuteDelta) {
          eventResize(this, event, 0, minuteDelta, ev);
        }
        // otherwise, the drag handler already restored the old events

        setTimeout(function() { // make this happen after the element's click event
          isResizing = false;
        },0);
      }

    });
  }


}

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.getViewName = function() { return viewName };
  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') {
      if(name == 'resources') {
        return v;
      }
      else {
        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, resource) {
    var oldAllDay = event.allDay;
    var eventId = event._id;
    var oldResourceId = event.resource;
    moveEvents(eventsByID[eventId], dayDelta, minuteDelta, allDay, resource);
    trigger(
      'eventDrop',
      e,
      event,
      dayDelta,
      minuteDelta,
      allDay,
      function() {
        // TODO: investigate cases where this inverse technique might not work
        moveEvents(eventsByID[eventId], -dayDelta, -minuteDelta, oldAllDay,oldResourceId);
        reportEventChange(eventId);
      },
      ev,
      ui,
      resource
    );
    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, resource) {
    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);
      }
      if (e.resource != resource && len == 1) {
        // Change resource if this is not repeating event
        e.resource = resource;
      }

      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;
  t.renderTempDaySegs = renderTempDaySegs;


  // 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 timeOfDayCol = t.timeOfDayCol;
  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;
  var getViewName = t.getViewName;



  /* 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 = '';
    var viewName = getViewName();
    var weekends = opt('weekends'), weekendTestDate, weekendSumColStart, weekendSumColEnd;

    // 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');
        }

        if (viewName == 'resourceMonth') {
          // for resourceMonth view
          leftCol = seg.start.getDate()-1;
          rightCol = seg.end.getDate()-2;

          if(!weekends) {
            // Drop out weekends
            weekendSumColStart=0
            weekendSumColEnd=0

            for(var j=0; j<=leftCol; j++) {
              weekendTestDate = addDays(cloneDate(t.visStart), j);

              if(weekendTestDate.getDay() == 0 || weekendTestDate.getDay() == 6) {
                weekendSumColStart++;
              }
            }
            leftCol -= weekendSumColStart;

            if (seg.start.getDay() == 6 || seg.start.getDay() == 0) leftCol++;

            for(j=0; j<=rightCol; j++) {
              weekendTestDate = addDays(cloneDate(t.visStart), j);

              if(weekendTestDate.getDay() == 0 || weekendTestDate.getDay() == 6) {
                weekendSumColEnd++;
              }
            }
            rightCol -= weekendSumColEnd;
          }

          if(rightCol < 0) {
            // end is in the next month so rightCol is the last column
            rightCol = getColCnt()-1;
          }
        }
        else if (viewName == 'resourceNextWeeks') {

          leftCol = dateCell(seg.start).col;
          rightCol = dateCell(seg.end).col-1;
          if(!weekends) {
            leftCol = dateCell(seg.start).col;
            rightCol = dateCell(addDays(cloneDate(seg.end),-1)).col;
            if (seg.start.getDay() == 6 || seg.start.getDay() == 0) leftCol++;
          }
        }
        else if (viewName == 'resourceDay') {
          // hack for resourceDay view
          leftCol = timeOfDayCol(seg.start);
          rightCol = timeOfDayCol(seg.end)-1;
        }
        else {
          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' " + (skinCss ? " style='" + skinCss + "'" : "") + ">" + 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:not(.fc-resourceName):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) {
        var segTop = parseInt(seg.top)>0?parseInt(seg.top):0;
        element[0].style.top = rowTops[seg.row] + segTop + '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;
  var getViewName = t.getViewName;


  // 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, resource) {
    if (typeof resource == 'object' && resource.readonly === true) {
      return false;
    }

    selected = true;
    trigger('select', null, startDate, endDate, allDay, ev, '', resource);
  }


  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
    var row;
    var resources = t.getResources || [];
    var resourceRO;

    var viewName = getViewName();
    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) {
          resourceRO = typeof resources[cell.row] == 'object' ? resources[cell.row].readonly : false;
        }


        if (cell && cellIsAllDay(cell) && resourceRO !== true) {
          dates = [ cellDate(origCell), cellDate(cell) ].sort(cmp);
          renderSelection(dates[0], dates[1], (viewName == 'resourceDay' ? false : true), cell.row);
          row = cell.row;
        }else{
          dates = null;
        }
      }, ev);
      $(document).one('mouseup', function(ev) {
        hoverListener.stop();
        if (dates) {
          if (+dates[0] == +dates[1]) {
            reportDayClick(dates[0],(viewName == 'resourceDay' ? false : true), ev, resources[row]);
          }
          reportSelection(dates[0], (viewName == 'resourceDay' ? addMinutes(dates[1], opt('slotMinutes')) : dates[1]), (viewName == 'resourceDay' ? false : true), ev, resources[row]);
        }
      });
    }
  }


}

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);