Chris@909: # RedMine - project management software
Chris@909: # Copyright (C) 2006-2011  Jean-Philippe Lang
Chris@909: #
Chris@909: # This program is free software; you can redistribute it and/or
Chris@909: # modify it under the terms of the GNU General Public License
Chris@909: # as published by the Free Software Foundation; either version 2
Chris@909: # of the License, or (at your option) any later version.
Chris@909: #
Chris@909: # This program is distributed in the hope that it will be useful,
Chris@909: # but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@909: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@909: # GNU General Public License for more details.
Chris@909: #
Chris@909: # You should have received a copy of the GNU General Public License
Chris@909: # along with this program; if not, write to the Free Software
Chris@909: # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
Chris@909: 
Chris@909: require 'zlib'
Chris@909: 
Chris@909: class WikiContent < ActiveRecord::Base
Chris@909:   set_locking_column :version
Chris@909:   belongs_to :page, :class_name => 'WikiPage', :foreign_key => 'page_id'
Chris@909:   belongs_to :author, :class_name => 'User', :foreign_key => 'author_id'
Chris@909:   validates_presence_of :text
Chris@909:   validates_length_of :comments, :maximum => 255, :allow_nil => true
Chris@909: 
Chris@909:   acts_as_versioned
Chris@909: 
Chris@909:   def visible?(user=User.current)
Chris@909:     page.visible?(user)
Chris@909:   end
Chris@909: 
Chris@909:   def project
Chris@909:     page.project
Chris@909:   end
Chris@909: 
Chris@909:   def attachments
Chris@909:     page.nil? ? [] : page.attachments
Chris@909:   end
Chris@909: 
Chris@909:   # Returns the mail adresses of users that should be notified
Chris@909:   def recipients
Chris@909:     notified = project.notified_users
Chris@909:     notified.reject! {|user| !visible?(user)}
Chris@909:     notified.collect(&:mail)
Chris@909:   end
Chris@909: 
Chris@909:   # Return true if the content is the current page content
Chris@909:   def current_version?
Chris@909:     true
Chris@909:   end
Chris@909: 
Chris@909:   class Version
Chris@909:     belongs_to :page, :class_name => '::WikiPage', :foreign_key => 'page_id'
Chris@909:     belongs_to :author, :class_name => '::User', :foreign_key => 'author_id'
Chris@909:     attr_protected :data
Chris@909: 
Chris@909:     acts_as_event :title => Proc.new {|o| "#{l(:label_wiki_edit)}: #{o.page.title} (##{o.version})"},
Chris@909:                   :description => :comments,
Chris@909:                   :datetime => :updated_on,
Chris@909:                   :type => 'wiki-page',
Chris@909:                   :url => Proc.new {|o| {:controller => 'wiki', :action => 'show', :project_id => o.page.wiki.project, :id => o.page.title, :version => o.version}}
Chris@909: 
Chris@909:     acts_as_activity_provider :type => 'wiki_edits',
Chris@909:                               :timestamp => "#{WikiContent.versioned_table_name}.updated_on",
Chris@909:                               :author_key => "#{WikiContent.versioned_table_name}.author_id",
Chris@909:                               :permission => :view_wiki_edits,
Chris@909:                               :find_options => {:select => "#{WikiContent.versioned_table_name}.updated_on, #{WikiContent.versioned_table_name}.comments, " +
Chris@909:                                                            "#{WikiContent.versioned_table_name}.#{WikiContent.version_column}, #{WikiPage.table_name}.title, " +
Chris@909:                                                            "#{WikiContent.versioned_table_name}.page_id, #{WikiContent.versioned_table_name}.author_id, " +
Chris@909:                                                            "#{WikiContent.versioned_table_name}.id",
Chris@909:                                                 :joins => "LEFT JOIN #{WikiPage.table_name} ON #{WikiPage.table_name}.id = #{WikiContent.versioned_table_name}.page_id " +
Chris@909:                                                           "LEFT JOIN #{Wiki.table_name} ON #{Wiki.table_name}.id = #{WikiPage.table_name}.wiki_id " +
Chris@909:                                                           "LEFT JOIN #{Project.table_name} ON #{Project.table_name}.id = #{Wiki.table_name}.project_id"}
Chris@909: 
Chris@909:     def text=(plain)
Chris@909:       case Setting.wiki_compression
Chris@909:       when 'gzip'
Chris@909:       begin
Chris@909:         self.data = Zlib::Deflate.deflate(plain, Zlib::BEST_COMPRESSION)
Chris@909:         self.compression = 'gzip'
Chris@909:       rescue
Chris@909:         self.data = plain
Chris@909:         self.compression = ''
Chris@909:       end
Chris@909:       else
Chris@909:         self.data = plain
Chris@909:         self.compression = ''
Chris@909:       end
Chris@909:       plain
Chris@909:     end
Chris@909: 
Chris@909:     def text
Chris@909:       @text ||= case compression
Chris@909:       when 'gzip'
Chris@909:         str = Zlib::Inflate.inflate(data)
Chris@909:         str.force_encoding("UTF-8") if str.respond_to?(:force_encoding)
Chris@909:         str
Chris@909:       else
Chris@909:         # uncompressed data
Chris@909:         data
Chris@909:       end
Chris@909:     end
Chris@909: 
Chris@909:     def project
Chris@909:       page.project
Chris@909:     end
Chris@909: 
Chris@909:     # Return true if the content is the current page content
Chris@909:     def current_version?
Chris@909:       page.content.version == self.version
Chris@909:     end
Chris@909: 
Chris@909:     # Returns the previous version or nil
Chris@909:     def previous
Chris@909:       @previous ||= WikiContent::Version.find(:first,
Chris@909:                                               :order => 'version DESC',
Chris@909:                                               :include => :author,
Chris@909:                                               :conditions => ["wiki_content_id = ? AND version < ?", wiki_content_id, version])
Chris@909:     end
Chris@909:   end
Chris@909: end