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# redMine - project management software

# Copyright (C) 2006-2007  Jean-Philippe Lang

#

# This program is free software; you can redistribute it and/or

# modify it under the terms of the GNU General Public License

# as published by the Free Software Foundation; either version 2

# of the License, or (at your option) any later version.

# 

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

# 

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

module Redmine

  module Acts

    module Event

      def self.included(base)

        base.extend ClassMethods

      end

      module ClassMethods

        def acts_as_event(options = {})

          return if self.included_modules.include?(Redmine::Acts::Event::InstanceMethods)

          default_options = { :datetime => :created_on,

                              :title => :title,

                              :description => :description,

                              :author => :author,

                              :url => {:controller => 'welcome'},

                              :type => self.name.underscore.dasherize }

          cattr_accessor :event_options

          self.event_options = default_options.merge(options)

          send :include, Redmine::Acts::Event::InstanceMethods

        end

      end

      module InstanceMethods

        def self.included(base)

          base.extend ClassMethods

        end

        %w(datetime title description author type).each do |attr|

          src = <<-END_SRC

            def event_#{attr}

              option = event_options[:#{attr}]

              if option.is_a?(Proc)

                option.call(self)

              elsif option.is_a?(Symbol)

                send(option)

              else

                option

              end

            end

          END_SRC

          class_eval src, __FILE__, __LINE__

        end

        def event_date

          event_datetime.to_date

        end

        def event_url(options = {})

          option = event_options[:url]

          if option.is_a?(Proc)

            option.call(self).merge(options)

          elsif option.is_a?(Hash)

            option.merge(options)

          elsif option.is_a?(Symbol)

            send(option).merge(options)

          else

            option

          end

        end

        # Returns the mail adresses of users that should be notified

        def recipients

          notified = project.notified_users

          notified.reject! {|user| !visible?(user)}

          notified.collect(&:mail)

        end

        module ClassMethods

        end

      end

    end

  end

end