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git-svn-id: http://redmine.rubyforge.org/svn/trunk@766 e93f8b46-1217-0410-a6f0-8f06a7374b81

2 files changed, 56 insertions, 0 deletions

diff --git a/lib/plugins/acts_as_watchable/init.rb b/lib/plugins/acts_as_watchable/init.rb
new file mode 100644
index 000000000..f39cc7d18
--- /dev/null
+++ b/lib/plugins/acts_as_watchable/init.rb
@@ -0,0 +1,3 @@
+# Include hook code here
+require File.dirname(__FILE__) + '/lib/acts_as_watchable'
+ActiveRecord::Base.send(:include, Redmine::Acts::Watchable)
diff --git a/lib/plugins/acts_as_watchable/lib/acts_as_watchable.rb b/lib/plugins/acts_as_watchable/lib/acts_as_watchable.rb
new file mode 100644
index 000000000..c789017e5
--- /dev/null
+++ b/lib/plugins/acts_as_watchable/lib/acts_as_watchable.rb
@@ -0,0 +1,53 @@
+# ActsAsWatchable
+module Redmine
+  module Acts
+    module Watchable
+      def self.included(base) 
+        base.extend ClassMethods
+      end 
+
+      module ClassMethods
+        def acts_as_watchable(options = {})
+          return if self.included_modules.include?(Redmine::Acts::Watchable::InstanceMethods)          
+          send :include, Redmine::Acts::Watchable::InstanceMethods
+          
+          class_eval do
+            has_many :watchers, :as => :watchable, :dependent => :delete_all
+          end
+        end
+      end
+
+      module InstanceMethods
+        def self.included(base)
+          base.extend ClassMethods
+        end
+        
+        def add_watcher(user)
+          self.watchers << Watcher.new(:user => user)
+        end
+        
+        def remove_watcher(user)
+          return nil unless user && user.is_a?(User)
+          Watcher.delete_all "watchable_type = '#{self.class}' AND watchable_id = #{self.id} AND user_id = #{user.id}"
+        end
+        
+        def watched_by?(user)
+          !self.watchers.find(:first,
+                              :conditions => ["#{Watcher.table_name}.user_id = ?", user.id]).nil?
+        end
+        
+        def watcher_recipients
+          self.watchers.collect { |w| w.user.mail }
+        end
+
+        module ClassMethods
+          def watched_by(user)
+            find(:all, 
+                 :include => :watchers,
+                 :conditions => ["#{Watcher.table_name}.user_id = ?", user.id])
+          end
+        end
+      end
+    end
+  end
+end 
\ No newline at end of file