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The Calendar component is a typical calendar that can display scheduling data. Designed for maximum efficiency, performance, and customization.

Creating the Calendar

The Calendar extends SkinnableComponent so it can be added to any parent that implements IVisualElementContainer.

Using the Calendar

The Calendar component displays calendar data in one of 3 display modes: "column", "grid", and "columnAndAllDayGrid". "column" displays data in columns, and is the typical week or day calendar presentation. "grid" displays data in a series of rows and columns and is typical of a weeks or month calendar presentation. "columnAndAllDayGrid" is a combination of both column and grid display modes by using a grid view for all-day events and a column view for the non all-day data.


The dataProvider accepts an IList implementing collection of SchedulingData objects. Each SchedulingData object will be used to define renderers. Due to calendar recurrence (repeating events), a single SchedulingData object may define an infinite number of renderers.

The Calendar only makes changes to the dataProvider when items are dragged or resized. Additional changes to the underlying data can be handled externally by a custom interaction management component. Listen for collection events on the dataProvider to detect changes.

Note: when making bulk changes to the dataProvider, it is much faster to create a new dataProvider completely than to add large numbers of objects to an existing dataProvider individually.

Configuring Calendars

The Ardisia Calendar component can display multiple calendars at any given time. Such calendars are defined by "CalendarDefinitionData" objects and these objects allow the user to define the name, color, and a multitude of other properties. Typically, these objects are not passed directly to the Ardisia Calendar, instead they are referenced by each SchedulingData object on its "calendar" property.

Multiple calendars can be displayed in individual columns in the COLUMN mode by passing an ICollection of CalendarDefiniteData objects to the "subColumnsCalendars" property.

calendar.subColumnsCalendars = new ArrayCollection(calendars);

Item Renderers

There are a multitude of renderer classes. See the skin for all the defined factories.

To increase performance, item renderers for the events for the column and grid mode may be cached. Use the "cachedColumnRenderers" and "cachedGridRenderers" to set the number of cached renderers. Higher numbers will increase startup time, but should increase runtime performance.

The included item renderer classes for the event renderers are pure actionscript and are very performant. However, they are hard to customize. Feel free to create MXML based item renderers, but keep in mind the potential performance hit if you are displaying large numbers of renderers.


Event renderers can be selected by clicking on them. Multiple selection is supported by holding down the CTRL or SHIFT key while mousing down over event renderers and "allowMultipleSelection" is true.

Accessing the selected data is done via the bindable "selectedData" property of type SelectedCalendarData.

Time periods can also be selected by mousing down and dragging over the calendar grid or columns. The selected time period is accessible via the "selectedPeriod" property. It is useful for setting up the time period for new events.

Dragging and Resizing Event Renderers

If "dragEnabled" is true, users can drag event renderers around and change their start/end dates. Also, for the COLUMN view, users can resize the duration of the event by dragging. See the "resizeThreshold", "autoScrollThreshold" properties.

Configuring The Display

Set the display mode via the "displayMode" property. Possible values are "column", "columnAndAllDayGrid", and "grid" which correspond roughly to week and month views. Next set the first day to display via the "startDate" property and then set the number of columns and rows to display via the "columnCount" and "rowCount" properties.

By default, each day of the week is displayed. To disable display of certain days of the week use the "showMonday", "showTuesday", etc. properties. This enables developers to create novel display modes. For example, one could display the next 100 Mondays by using the following setup:

<ardisia:calendar showMonday="true" 

The beginning time displayed in the COLUMN displayMode is set via the "startTime" property and the end time displayed is set by the "endTime" property. The number of minutes visible at any given time is set via the "primaryTimeIntervalMinutes" property.

For example: For the calendar below:

<ardisia:calendar startTime="480" 

This calendar would start display at 6:00 am and end at 11:00 pm. The total time displayed at any time would be 10 hours.


Layout is tied into the host component's updateDisplayList() method.

Focus and Accessibility

The Calendar does implement focus, but the item renderers do not accept focus out of the box. If desired, focusable item renderers should be added by the developer.

Default Property

The IList implementing "dataProvider".

Helper Classes

There are many classes useful for setting up the forms, calendar pickers, etc., for use with the Calendar. See the DisplayUtils, ObjectUtils, DatePicker classes as well as the demo assets for the Calendar demo application.


Due to the fact that SchedulingData objects can define an infinite number of renderers due to iCalendar defined recurrence, there isn't always a 1 to 1 ratio of item renderers to objects in the dataProvider. For example, if a single SchedulingData object repeats weekly, the calendar may have to create 10 item renderers to display all the repeating events. In this case, only one SchedulingData object exists, but 10 data objects were created to represent the renderers.

Internal data items created by the Calendar are of the "StoreData" type and there is a 1 to 1 ratio of StoreData objects to item renderers. The only way to access these data items without overriding is to call the "getStoreData()" method. Each StoreData objects has a reference to the SchedulingData object used to create it. This is useful for advanced customization.


Since developers can set which days of the week to display and the number of rows and columns, the actual days displayed can be rather tricky to calculate. To access the array that defines the displayed days, use the "getDateMap()" method.

The returned array is a 1-dimensional array of Date objects, arranged in the order of display. This is useful for advanced customization.

Themes & Skinning

A skin is provided for the Spark theme.


See the Calendar demo application for example code.

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