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<?php
/**
* Freebusy Component
* @package qCal
* @copyright Luke Visinoni (luke.visinoni@gmail.com)
* @author Luke Visinoni (luke.visinoni@gmail.com)
* @license GNU Lesser General Public License
*
* RFC 2445 Definition
*
* Component Name: VFREEBUSY
*
* Purpose: Provide a grouping of component properties that describe
* either a request for free/busy time, describe a response to a request
* for free/busy time or describe a published set of busy time.
*
* Formal Definition: A "VFREEBUSY" calendar component is defined by the
* following notation:
*
* freebusyc = "BEGIN" ":" "VFREEBUSY" CRLF
* fbprop
* "END" ":" "VFREEBUSY" CRLF
*
* fbprop = *(
*
* ; the following are optional,
* ; but MUST NOT occur more than once
*
* contact / dtstart / dtend / duration / dtstamp /
* organizer / uid / url /
*
* ; the following are optional,
* ; and MAY occur more than once
*
* attendee / comment / freebusy / rstatus / x-prop
*
* )
*
* Description: A "VFREEBUSY" calendar component is a grouping of
* component properties that represents either a request for, a reply to
* a request for free or busy time information or a published set of
* busy time information.
*
* When used to request free/busy time information, the "ATTENDEE"
* property specifies the calendar users whose free/busy time is being
* requested; the "ORGANIZER" property specifies the calendar user who
* is requesting the free/busy time; the "DTSTART" and "DTEND"
* properties specify the window of time for which the free/busy time is
* being requested; the "UID" and "DTSTAMP" properties are specified to
* assist in proper sequencing of multiple free/busy time requests.
*
* When used to reply to a request for free/busy time, the "ATTENDEE"
* property specifies the calendar user responding to the free/busy time
* request; the "ORGANIZER" property specifies the calendar user that
* originally requested the free/busy time; the "FREEBUSY" property
* specifies the free/busy time information (if it exists); and the
*
* "UID" and "DTSTAMP" properties are specified to assist in proper
* sequencing of multiple free/busy time replies.
*
* When used to publish busy time, the "ORGANIZER" property specifies
* the calendar user associated with the published busy time; the
* "DTSTART" and "DTEND" properties specify an inclusive time window
* that surrounds the busy time information; the "FREEBUSY" property
* specifies the published busy time information; and the "DTSTAMP"
* property specifies the date/time that iCalendar object was created.
*
* The "VFREEBUSY" calendar component cannot be nested within another
* calendar component. Multiple "VFREEBUSY" calendar components can be
* specified within an iCalendar object. This permits the grouping of
* Free/Busy information into logical collections, such as monthly
* groups of busy time information.
*
* The "VFREEBUSY" calendar component is intended for use in iCalendar
* object methods involving requests for free time, requests for busy
* time, requests for both free and busy, and the associated replies.
*
* Free/Busy information is represented with the "FREEBUSY" property.
* This property provides a terse representation of time periods. One or
* more "FREEBUSY" properties can be specified in the "VFREEBUSY"
* calendar component.
*
* When present in a "VFREEBUSY" calendar component, the "DTSTART" and
* "DTEND" properties SHOULD be specified prior to any "FREEBUSY"
* properties. In a free time request, these properties can be used in
* combination with the "DURATION" property to represent a request for a
* duration of free time within a specified window of time.
*
* The recurrence properties ("RRULE", "EXRULE", "RDATE", "EXDATE") are
* not permitted within a "VFREEBUSY" calendar component. Any recurring
* events are resolved into their individual busy time periods using the
* "FREEBUSY" property.
*
* Example: The following is an example of a "VFREEBUSY" calendar
* component used to request free or busy time information:
*
* BEGIN:VFREEBUSY
* ORGANIZER:MAILTO:jane_doe@host1.com
* ATTENDEE:MAILTO:john_public@host2.com
* DTSTART:19971015T050000Z
* DTEND:19971016T050000Z
* DTSTAMP:19970901T083000Z
* END:VFREEBUSY
*
* The following is an example of a "VFREEBUSY" calendar component used
* to reply to the request with busy time information:
*
* BEGIN:VFREEBUSY
* ORGANIZER:MAILTO:jane_doe@host1.com
* ATTENDEE:MAILTO:john_public@host2.com
* DTSTAMP:19970901T100000Z
* FREEBUSY;VALUE=PERIOD:19971015T050000Z/PT8H30M,
* 19971015T160000Z/PT5H30M,19971015T223000Z/PT6H30M
* URL:http://host2.com/pub/busy/jpublic-01.ifb
* COMMENT:This iCalendar file contains busy time information for
* the next three months.
* END:VFREEBUSY
*
* The following is an example of a "VFREEBUSY" calendar component used
* to publish busy time information.
*
* BEGIN:VFREEBUSY
* ORGANIZER:jsmith@host.com
* DTSTART:19980313T141711Z
* DTEND:19980410T141711Z
* FREEBUSY:19980314T233000Z/19980315T003000Z
* FREEBUSY:19980316T153000Z/19980316T163000Z
* FREEBUSY:19980318T030000Z/19980318T040000Z
* URL:http://www.host.com/calendar/busytime/jsmith.ifb
* END:VFREEBUSY
*/
class qCal_Component_Vfreebusy extends qCal_Component {
protected $name = "VFREEBUSY";
protected $allowedComponents = array('VCALENDAR');
}