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require 'date'
module TimeTablesHelper
def month_periode_enum(years)
start_date = Date.today - years.years
end_date = Date.today + years.years
(start_date..end_date).map(&:beginning_of_month).uniq.map(&:to_s)
end
def new_alt_calendar(options = {}, &block)
raise(ArgumentError, "No year given") unless options.has_key?(:year)
raise(ArgumentError, "No month given") unless options.has_key?(:month)
block ||= Proc.new {|d| nil}
month_names = (!defined?(I18n) || I18n.t("date.month_names").include?("missing")) ? Date::MONTHNAMES.dup : I18n.t("date.month_names")
defaults = {
:table_id => "calendar-#{options[:year]}-#{"%02d" % options[:month]}",
:table_class => 'calendar',
:month_name_class => 'monthName',
:other_month_class => 'outsideMonth',
:day_name_class => 'dayName',
:day_class => 'day',
:abbrev => false,
:first_day_of_week => 0,
:accessible => false,
:show_today => true,
:previous_month_text => nil,
:next_month_text => nil,
:month_header => true,
:calendar_title => month_names[options[:month]],
:summary => "Calendrier pour #{month_names[options[:month]]} #{options[:year]}"
}
options = defaults.merge options
first = Date.civil(options[:year], options[:month], 1)
last = Date.civil(options[:year], options[:month], -1)
first_weekday = first_day_of_week(options[:first_day_of_week])
last_weekday = last_day_of_week(options[:first_day_of_week])
day_names = (!defined?(I18n) || I18n.t("date.day_names").include?("missing")) ? Date::DAYNAMES : I18n.t("date.day_names")
abbr_day_names = (!defined?(I18n) || I18n.t("date.abbr_day_names").include?("missing")) ? Date::ABBR_DAYNAMES : I18n.t("date.abbr_day_names")
week_days = (0..6).to_a
first_weekday.times do
week_days.push(week_days.shift)
end
# TODO Use some kind of builder instead of straight HTML
cal = %(<table id="#{options[:table_id]}" class="#{options[:table_class]}" border="0" cellspacing="0" cellpadding="0" summary="#{options[:summary]}">)
cal << %(<thead>)
if (options[:month_header])
cal << %(<tr>)
cal << %(<th class='weekNumber' scope="col"></th>)
if options[:previous_month_text] or options[:next_month_text]
cal << %(<th colspan="2">#{options[:previous_month_text]}</th>)
colspan=3
else
colspan=7
end
cal << %(<th colspan="#{colspan}" class="#{options[:month_name_class]}">#{options[:calendar_title]}</th>)
cal << %(<th colspan="2">#{options[:next_month_text]}</th>) if options[:next_month_text]
cal << %(</tr>)
end
cal << %(<tr class="#{options[:day_name_class]}">)
cal << %(<th class='weekNumber' scope="col"></th>)
week_days.each do |wday|
cal << %(<th id="#{th_id(Date::DAYNAMES[wday], options[:table_id])}" scope="col">)
cal << (options[:abbrev] ? %(<abbr title="#{day_names[wday]}">#{t("calendars.days.#{Date::DAYNAMES[wday].downcase}")}</abbr>) : t("calendars.days.#{Date::DAYNAMES[wday].downcase}"))
cal << %(</th>)
end
cal << "</tr></thead><tbody><tr>"
# previous month
beginning_of_week(first, first_weekday).upto(first - 1) do |d|
cal << "<td class='weekNumber'>S#{d.strftime("%W").to_s}</td>" if d.wday == first_weekday
cal << generate_other_month_cell(d, options)
end unless first.wday == first_weekday
first.upto(last) do |cur|
cell_text, cell_attrs = yield cur
cell_text ||= cur.mday
cell_attrs ||= {}
cell_attrs[:headers] = th_id(cur, options[:table_id])
cell_attrs[:class] ||= options[:day_class]
cell_attrs[:class] += " weekend" if [0, 6].include?(cur.wday)
today = (Time.respond_to?(:zone) && !(zone = Time.zone).nil? ? zone.now.to_date : Date.today)
cell_attrs[:class] += " today" if (cur == today) and options[:show_today]
cal << "<td class='weekNumber'>S#{cur.strftime("%W").to_s}</td>" if cur.wday == first_weekday
cal << generate_cell(cell_text, cell_attrs)
cal << "</tr><tr>" if cur.wday == last_weekday
end
# next month
(last + 1).upto(beginning_of_week(last + 7, first_weekday) - 1) do |d|
cal << generate_other_month_cell(d, options)
end unless last.wday == last_weekday
cal << "</tr></tbody></table>"
cal.respond_to?(:html_safe) ? cal.html_safe : cal
end
private
def first_day_of_week(day)
day
end
def last_day_of_week(day)
if day > 0
day - 1
else
6
end
end
def days_between(first, second)
if first > second
second + (7 - first)
else
second - first
end
end
def beginning_of_week(date, start = 1)
days_to_beg = days_between(start, date.wday)
date - days_to_beg
end
def generate_cell(cell_text, cell_attrs)
cell_attrs = cell_attrs.map {|k, v| %(#{k}="#{v}") }.join(" ")
"<td #{cell_attrs}>#{cell_text}</td>"
end
def generate_other_month_cell(date, options)
cell_attrs = {}
cell_attrs[:headers] = th_id(date, options[:table_id])
cell_attrs[:class] = options[:other_month_class]
cell_attrs[:class] += " weekend" if weekend?(date)
cell_attrs[:title] ||= date.strftime("%W").to_i if options[:first_day_of_week] == 1
cell_text = date.day
if options[:accessible]
cell_text += %(<span class="hidden"> #{month_names[date.month]}</span>)
end
generate_cell(date.day, cell_attrs)
end
# Calculates id for th element.
# derived from calendar_id and dow.
#
# Params:
# `day` can be either Date or DOW('Sunday', 'Monday')
def th_id(day, calendar_id)
return th_id(Date::DAYNAMES[day.wday], calendar_id) if day.is_a?(Date)
"#{calendar_id}-#{day[0..2].downcase}"
end
def weekend?(date)
[0, 6].include?(date.wday)
end
class Engine < Rails::Engine # :nodoc:
ActiveSupport.on_load(:action_view) do
include CalendarHelper
end
end if defined? Rails::Engine
end
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