diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index 27851e435..a38d9f9c8 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -630,7 +630,13 @@ class CoursesController < ApplicationController
                                                :with_subprojects => false,
                                                :author => @author)
     @activity.scope_select {|t| has["show_#{t}"]}
-    events = @activity.events(@date_from, @date_to)
+    # modify by nwb
+    # 添加私密性判断
+    if User.current.member_of_course?(@course)|| User.current.admin?
+      events = @activity.events(@date_from, @date_to)
+    else
+      events = @activity.events(@date_from, @date_to, :is_public => 1)
+    end
 
     @offset, @limit = api_offset_and_limit({:limit => 10})
     @events_count = events.count
diff --git a/app/controllers/documents_controller.rb b/app/controllers/documents_controller.rb
index 464c4a2b8..89bd9dc92 100644
--- a/app/controllers/documents_controller.rb
+++ b/app/controllers/documents_controller.rb
@@ -23,6 +23,7 @@ class DocumentsController < ApplicationController
   before_filter :find_model_object, :except => [:index, :new, :create]
   before_filter :find_project_from_association, :except => [:index, :new, :create]
   before_filter :authorize , :except => [:index]#Added by young
+  before_filter :authorize_document
 
   helper :attachments
 
@@ -100,4 +101,12 @@ class DocumentsController < ApplicationController
     end
     redirect_to document_path(@document)
   end
+
+  # 权限判断
+  # add by nwb
+  def authorize_document
+    if !(User.current.admin? || User.current.member_of?(@project) || @document.is_public==1)
+      render_403 :message => :notice_not_authorized
+    end
+  end
 end
diff --git a/app/controllers/projects_controller.rb b/app/controllers/projects_controller.rb
index a840ee934..1d3f0ec42 100644
--- a/app/controllers/projects_controller.rb
+++ b/app/controllers/projects_controller.rb
@@ -697,8 +697,14 @@ class ProjectsController < ApplicationController
     @activity.scope_select {|t| !has["show_#{t}"].nil?}
     # logger.debug "=========================================#{@activity.scope}"
     #   @activity.scope = (@author.nil? ? :default : :all) if @activity.scope.empty?
-    #Added by young
-    events = @activity.events(@date_from, @date_to)
+
+    # modify by nwb
+    # 添加私密性判断
+    if User.current.member_of?(@project)|| User.current.admin?
+      events = @activity.events(@date_from, @date_to)
+    else
+      events = @activity.events(@date_from, @date_to, :is_public => 1)
+    end
 
     @offset, @limit = api_offset_and_limit({:limit => 10})
     @events_count = events.count
diff --git a/app/models/attachment.rb b/app/models/attachment.rb
index 0eb3e7666..b301ba73c 100644
--- a/app/models/attachment.rb
+++ b/app/models/attachment.rb
@@ -39,19 +39,22 @@ class Attachment < ActiveRecord::Base
 
   #课程资源文件
   acts_as_activity_provider :type => 'course_files',
+                            :is_public => 'attachments.is_public',
                             :permission => :view_files,
                             :author_key => :author_id,
                             :find_options => {:select => "#{Attachment.table_name}.*",
                                               :joins => "LEFT JOIN #{Course.table_name}  ON ( #{Attachment.table_name}.container_type='Course' AND #{Attachment.table_name}.container_id = #{Course.table_name}.id )"}
 
   acts_as_activity_provider :type => 'files',
+                            :is_public => 'attachments.is_public',
                             :permission => :view_files,
                             :author_key => :author_id,
-                            :find_options => {:select => "#{Attachment.table_name}.*",
+                            :find_options => { :select => "#{Attachment.table_name}.*",
                                               :joins => "LEFT JOIN #{Version.table_name} ON #{Attachment.table_name}.container_type='Version' AND #{Version.table_name}.id = #{Attachment.table_name}.container_id " +
                                                         "LEFT JOIN #{Project.table_name} ON #{Version.table_name}.project_id = #{Project.table_name}.id OR ( #{Attachment.table_name}.container_type='Project' AND #{Attachment.table_name}.container_id = #{Project.table_name}.id )"}
 
   acts_as_activity_provider :type => 'documents',
+                            :is_public => 'documents.is_public',
                             :permission => :view_documents,
                             :author_key => :author_id,
                             :find_options => {:select => "#{Attachment.table_name}.*",
diff --git a/app/models/document.rb b/app/models/document.rb
index 661949ca9..5cfce896b 100644
--- a/app/models/document.rb
+++ b/app/models/document.rb
@@ -30,7 +30,8 @@ class Document < ActiveRecord::Base
   acts_as_event :title => Proc.new {|o| "#{l(:label_document)}: #{o.title}"},
                 :author => Proc.new {|o| o.attachments.reorder("#{Attachment.table_name}.created_on ASC").first.try(:author) },
                 :url => Proc.new {|o| {:controller => 'documents', :action => 'show', :id => o.id}}
-  acts_as_activity_provider :find_options => {:include => :project}
+  acts_as_activity_provider :find_options => {:include => :project},
+                            :is_public => 'documents.is_public'
 
   validates_presence_of :project, :title, :category
   validates_length_of :title, :maximum => 60
diff --git a/lib/plugins/acts_as_activity_provider/lib/acts_as_activity_provider.rb b/lib/plugins/acts_as_activity_provider/lib/acts_as_activity_provider.rb
index 3875d5c04..e671c3e22 100644
--- a/lib/plugins/acts_as_activity_provider/lib/acts_as_activity_provider.rb
+++ b/lib/plugins/acts_as_activity_provider/lib/acts_as_activity_provider.rb
@@ -29,7 +29,7 @@ module Redmine
             send :include, Redmine::Acts::ActivityProvider::InstanceMethods
           end
 
-          options.assert_valid_keys(:type, :permission, :timestamp, :author_key, :find_options, :func)
+          options.assert_valid_keys(:type, :permission, :timestamp, :author_key, :find_options, :func,:is_public)
           self.activity_provider_options ||= {}
 
           # One model can provide different event types
@@ -65,6 +65,11 @@ module Redmine
               scope = scope.scoped(:conditions => ["#{provider_options[:author_key]} = ?", options[:author].id])
             end
 
+            # add by nwb
+            if options[:is_public]  && !provider_options[:is_public].nil?
+              scope = scope.scoped(:conditions => ["#{provider_options[:is_public]} = ?", options[:is_public]])
+            end
+
             if options[:limit]
               # id and creation time should be in same order in most cases
               scope = scope.scoped(:order => "#{table_name}.id DESC", :limit => options[:limit])
diff --git a/lib/redmine/activity/fetcher.rb b/lib/redmine/activity/fetcher.rb
index b95ae2bc3..2caef48b8 100644
--- a/lib/redmine/activity/fetcher.rb
+++ b/lib/redmine/activity/fetcher.rb
@@ -82,6 +82,8 @@ module Redmine
       def events(from = nil, to = nil, options={})
         e = []
         @options[:limit] = options[:limit]
+        # modify by nwb
+        @options[:is_public] = options[:is_public]
 
         @scope.each do |event_type|
           constantized_providers(event_type).each do |provider|