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module RiCal
class PropertyValue
class RecurrenceRule < PropertyValue
#- ©2009 Rick DeNatale, All rights reserved. Refer to the file README.txt for the license
#
class OccurrenceIncrementer # :nodoc:
class ByDayIncrementer < ListIncrementer #:nodoc:
def initialize(rrule, list, by_monthday_list, by_yearday_list, parent)
super(rrule, list, parent)
@monthday_filters = by_monthday_list
@yearday_filters = by_yearday_list
@by_day_scope = rrule.by_day_scope
case rrule.by_day_scope
when :yearly
@cycle_advance_proc = lambda {|date_time| first_day_of_year(advance_year(date_time))}
@current_proc = lambda {|date_time| same_year?(current, date_time)}
@first_day_proc = lambda {|date_time| first_day_of_year(date_time)}
when :monthly
@cycle_advance_proc = lambda {|date_time| first_day_of_month(advance_month(date_time))}
@current_proc = lambda {|date_time| same_month?(current, date_time)}
@first_day_proc = lambda {|date_time| first_day_of_month(date_time)}
when :weekly
@cycle_advance_proc = lambda {|date_time| first_day_of_week(rrule.wkst_day, advance_week(date_time))}
@current_proc = lambda {|date_time| same_week?(rrule.wkst_day, current, date_time)}
@first_day_proc = lambda {|date_time| first_day_of_week(rrule.wkst_day, date_time)}
else
raise "Invalid recurrence rule, byday needs to be scoped by month, week or year"
end
end
def self.for_rrule(rrule)
list = rrule.by_rule_list(:byday)
if list
sub_cycle_incrementer = OccurrenceIncrementer::DailyIncrementer.for_rrule(rrule)
new(rrule, list, rrule.by_rule_list(:bymonthday), rrule.by_rule_list(:byyearday), sub_cycle_incrementer)
else
OccurrenceIncrementer::ByYeardayIncrementer.for_rrule(rrule)
end
end
def unneeded?(candidate)
false
end
def daily_incrementer?
true
end
def start_of_cycle(date_time)
@first_day_proc.call(date_time)
end
def occurrences_for(date_time)
first_day = start_of_cycle(date_time)
result = list.map {|recurring_day| recurring_day.matches_for(first_day)}.flatten.uniq.sort
if @monthday_filters
result = result.select {|occurrence| @monthday_filters.any? {|recurring_day| recurring_day.include?(occurrence)}}
end
if @yearday_filters
result = result.select {|occurrence| @yearday_filters.any? {|recurring_day| recurring_day.include?(occurrence)}}
end
result
end
def candidate_acceptable?(candidate)
list.any? {|recurring_day| recurring_day.include?(candidate)}
end
def varying_time_attribute
:day
end
def advance_cycle(date_time)
@cycle_advance_proc.call(date_time)
end
def end_of_occurrence(date_time)
date_time.end_of_day
end
end
end
end
end
end
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