namespace gd = "http://schemas.google.com/g/2005"

include "atom.rnc" {
    start =
        comments
        | contactSection
        | email
        | entryLink
        | extendedProperty
        | feedLink
        | geoPt
        | im
        | originalEvent
        | phoneNumber
        | postalAddress
        | rating
        | recurrence
        | recurrenceException
        | reminder
        | when
        | where
        | who
        | eventStatus
        | transparency
        | visibility
}
# anyAttribute in the definition of gEnumConstruct and gdCommonProperties appears to be incorrect.
gEnumConstruct =
    attribute value { text },
    undefinedAttribute*
gdCommonProperties = atomCommonAttributes, anyElement*
comments =
    element gd:comments {
        gdCommonProperties,
        attribute rel { xsd:string }?,
        feedLink?
    }
contactSection =
    element gd:contactSection {
        gdCommonProperties,
        attribute label { xsd:string }?,
        (email* & im* & phoneNumber* & postalAddress* & geoPt*)
    }
email =
    element gd:email {
        attribute label { xsd:string }?,
        attribute address { xsd:string }
    }
entryLink =
    element gd:entryLink {
        (attribute href { xsd:string }?,
         attribute readOnly { xsd:boolean }?)
        #        atomEntry?
        
    }
extendedProperty =
    element gd:extendedProperty {
        attribute name { xsd:string },
        attribute value { xsd:string }
    }
feedLink =
    element gd:feedLink {
        (attribute href { xsd:string }?,
         attribute readOnly { xsd:boolean }?,
         attribute countHint { xsd:unsignedInt }?)
        #        atomFeed?
        
    }
geoPt =
    element gd:geoPt {
        attribute label { xsd:string }?,
        attribute lat { xsd:float },
        attribute lon { xsd:float },
        attribute elev { xsd:float }?,
        attribute time { xsd:dateTime }?
    }
im =
    element gd:im {
        attribute label { xsd:string }?,
        attribute protocol { xsd:string }?,
        attribute address { xsd:string }?
    }
originalEvent =
    element gd:originalEvent {
        attribute id { xsd:string },
        attribute href { xsd:string },
        when
    }
phoneNumber =
    element gd:phoneNumber {
        attribute rel { xsd:string }?,
        attribute label { xsd:string }?,
        attribute uri { xsd:string }?,
        xsd:string
    }
postalAddress =
    element gd:postalAddress {
        attribute label { xsd:string }?,
        xsd:string
    }
rating =
    element gd:rating {
        gdCommonProperties,
        attribute rel { xsd:string }?,
        attribute value { xsd:int }?,
        attribute average { xsd:float }?,
        attribute min { xsd:int },
        attribute max { xsd:int },
        attribute numRaters { xsd:int }?
    }
recurrence = element gd:recurrence { xsd:string }
recurrenceException =
    element gd:recurrenceException {
        attribute specialized { xsd:boolean },
        (entryLink & originalEvent)
    }
reminder =
    element gd:reminder {
        gdCommonProperties,
        attribute absoluteTime { xsd:dateTime }?,
        attribute method { xsd:string }?,
        attribute days { xsd:unsignedInt }?,
        attribute hours { xsd:unsignedInt }?,
        attribute minutes { xsd:unsignedInt }?
    }
when =
    element gd:when {
        gdCommonProperties,
        attribute startTime { xsd:date | xsd:dateTime },
        attribute endTime { xsd:date | xsd:dateTime }?,
        attribute valueString { xsd:string }?
    }
where =
    element gd:where {
        gdCommonProperties,
        attribute rel { xsd:string }?,
        attribute label { xsd:string }?,
        attribute valueString { xsd:string }?,
        entryLink?
    }
who =
    element gd:who {
        gdCommonProperties,
        attribute rel { xsd:string }?,
        attribute email { xsd:string }?,
        attribute valueString { xsd:string }?,
        (entryLink?
         & element gd:attendeeType { gEnumConstruct }?
         & element gd:attendeeStatus { gEnumConstruct }?)
    }
eventStatus = element gd:eventStatus { 
         attribute value {
             "http://schemas.google.com/g/2005#event.confirmed" | 
             "http://schemas.google.com/g/2005#event.confirmed" | 
             "http://schemas.google.com/g/2005#event.tentative"
         }
transparency = element gd:transparency { 
         attribute value {
             "http://schemas.google.com/g/2005#event.opaque" |
             "http://schemas.google.com/g/2005#event.transparent"
         }
visibility = element gd:visibility { 
         attribute value {
             "http://schemas.google.com/g/2005#event.confidential" | 
             "http://schemas.google.com/g/2005#event.default" | 
             "http://schemas.google.com/g/2005#event.private" | 
             "http://schemas.google.com/g/2005#event.public"
         }