Class: Icalendar::Timezone

Inherits:
Component show all
Defined in:
lib/icalendar/component/timezone.rb

Overview

A Timezone is unambiguously defined by the set of time measurement rules determined by the governing body for a given geographic area. These rules describe at a minimum the base offset from UTC for the time zone, often referred to as the Standard Time offset. Many locations adjust their Standard Time forward or backward by one hour, in order to accommodate seasonal changes in number of daylight hours, often referred to as Daylight Saving Time. Some locations adjust their time by a fraction of an hour. Standard Time is also known as Winter Time. Daylight Saving Time is also known as Advanced Time, Summer Time, or Legal Time in certain countries. The following table shows the changes in time zone rules in effect for New York City starting from 1967. Each line represents a description or rule for a particular observance.

Direct Known Subclasses

Daylight, Standard

Instance Attribute Summary

Attributes inherited from Component

#name, #properties

Instance Method Summary collapse

Methods inherited from Component

#add_sliced_text, #custom_property, #escape_chars, #multi_property?, #multiline_property?, #new_uid, #print_component, #print_parameters, #print_properties, #remove_component, #respond_to?

Methods inherited from Base

debug, quiet

Constructor Details

#initialize(name = "VTIMEZONE") ⇒ Timezone

Returns a new instance of Timezone.



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# File 'lib/icalendar/component/timezone.rb', line 61

def initialize(name = "VTIMEZONE")
  super(name)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Icalendar::Component

Instance Method Details

#add_component(component) ⇒ Object

Define a custom add component method because standard and daylight are the only components that can occur just once with their parent.



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# File 'lib/icalendar/component/timezone.rb', line 43

def add_component(component)
  key = component.class.to_s.downcase.gsub('icalendar::','').to_sym
  @components[key] = component
end

#daylight(&block) ⇒ Object 



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# File 'lib/icalendar/component/timezone.rb', line 75

def daylight(&block)
  e = Daylight.new
  self.add_component e

  e.instance_eval(&block) if block

  e
end

#standard(&block) ⇒ Object

Allow block syntax for declaration of standard and daylight components of timezone



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# File 'lib/icalendar/component/timezone.rb', line 66

def standard(&block)
  e = Standard.new
  self.add_component e

  e.instance_eval(&block) if block

  e
end

#to_ical ⇒ Object

Also need a custom to_ical because typically it iterates over an array of components.



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# File 'lib/icalendar/component/timezone.rb', line 50

def to_ical
  print_component do
  s = ""
    @components.each_value do |comp|
      s << comp.to_ical
    end
  s
  end
end