diff --git a/app/controllers/applied_project_controller.rb b/app/controllers/applied_project_controller.rb
index fdb45b030..3d061ef74 100644
--- a/app/controllers/applied_project_controller.rb
+++ b/app/controllers/applied_project_controller.rb
@@ -6,7 +6,8 @@ class AppliedProjectController < ApplicationController
     @project = Project.find(params[:project_id])
     @applieds = AppliedProject.where("user_id = ? and project_id = ?", params[:user_id],params[:project_id])
     if  @applieds.count == 0
-      AppliedProject.create(:user_id => params[:user_id], :project_id => params[:project_id])
+      appliedproject = AppliedProject.create(:user_id => params[:user_id], :project_id => params[:project_id])
+      Mailer.applied_project(appliedproject).deliver
     end
 
     #redirect_to project_path(params[:project_id])
diff --git a/app/controllers/attachments_controller.rb b/app/controllers/attachments_controller.rb
index 0b2ae02b3..7c1c10325 100644
--- a/app/controllers/attachments_controller.rb
+++ b/app/controllers/attachments_controller.rb
@@ -23,6 +23,7 @@ class AttachmentsController < ApplicationController
   
   before_filter :login_without_softapplication, only: [:download]
   accept_api_auth :show, :download, :upload
+  require 'iconv'
 
   def show
     respond_to do |format|
@@ -75,6 +76,25 @@ class AttachmentsController < ApplicationController
     end
   end
 
+  # 更新文件密级
+  def updateFileDense
+    @attachment = Attachment.find(params[:attachmentid])
+    if  @attachment != nil
+      filedense = params[:newtype].to_s
+     # d =  Iconv.conv("unicodebig","utf-8",filedense)
+      if filedense == "%E5%85%AC%E5%BC%80" #l(:field_is_public)
+        @attachment.is_public = 1
+      else
+        @attachment.is_public = 0
+      end
+      @attachment.save
+      @newfiledense = filedense
+    end
+    respond_to do |format|
+      format.js
+    end
+  end
+
   def thumbnail
     if @attachment.thumbnailable? && thumbnail = @attachment.thumbnail(:size => params[:size])
       if stale?(:etag => thumbnail)
@@ -89,6 +109,7 @@ class AttachmentsController < ApplicationController
     end
   end
 
+
   def upload
     # Make sure that API users get used to set this content type
     # as it won't trigger Rails' automatic parsing of the request body for parameters
diff --git a/app/controllers/projects_controller.rb b/app/controllers/projects_controller.rb
index 92186710c..7569ab5bb 100644
--- a/app/controllers/projects_controller.rb
+++ b/app/controllers/projects_controller.rb
@@ -746,7 +746,7 @@ class ProjectsController < ApplicationController
     #Added by young
     # @course_tag = params[:course]
     # if @course_tag == '1'
-    @course = Course.find_by_extra(@project.identifier)
+    #@course = Course.find_by_extra(@project.identifier)
     # if @project.project_type == 1
     #   render :layout => 'base_courses'
     # else
diff --git a/app/controllers/repositories_controller.rb b/app/controllers/repositories_controller.rb
index 3b97802f5..e91f9c0a9 100644
--- a/app/controllers/repositories_controller.rb
+++ b/app/controllers/repositories_controller.rb
@@ -239,7 +239,7 @@ class RepositoriesController < ApplicationController
       @repositories = @project.repositories
       @course_tag = params[:course]
       project_path_cut = RepositoriesHelper::PROJECT_PATH_CUT
-      ip = RepositoriesHelper::REPO_IP_ADDRESS
+      ip  = RepositoriesHelper::REPO_IP_ADDRESS
       @repos_url = "http://"+@repository.login.to_s+"_"+@repository.identifier.to_s+"@"+ip+
       @repository.url.slice(project_path_cut, @repository.url.length).to_s
       if @course_tag == 1
diff --git a/app/helpers/attachments_helper.rb b/app/helpers/attachments_helper.rb
index 14105bf88..b43eb22f1 100644
--- a/app/helpers/attachments_helper.rb
+++ b/app/helpers/attachments_helper.rb
@@ -109,7 +109,7 @@ module AttachmentsHelper
     domain = project.nil? ? attachAll : nobelong_attach
 
     # 搜索到的资源
-    searched_attach = domain.where("filename LIKE :like ", like:"%#{filename_condition}%").limit(limit).order('created_on desc')
+    searched_attach = domain.where("is_public=1 and filename LIKE :like ", like:"%#{filename_condition}%").limit(limit).order('created_on desc')
     #searched_attach = private_filter searched_attach
     searched_attach = paginateHelper(searched_attach, 10)
 
@@ -148,7 +148,7 @@ module AttachmentsHelper
     domain = course.nil? ? attachAll : nobelong_attach
 
     # 搜索到的资源
-    searched_attach = domain.where("filename LIKE :like ", like:"%#{filename_condition}%").limit(limit).order('created_on desc')
+    searched_attach = domain.where("is_public=1 and filename LIKE :like ", like:"%#{filename_condition}%").limit(limit).order('created_on desc')
     #searched_attach = private_filter searched_attach
     searched_attach = paginateHelper(searched_attach, 10)
 
diff --git a/app/models/attachment.rb b/app/models/attachment.rb
index 116e2de9a..0eb3e7666 100644
--- a/app/models/attachment.rb
+++ b/app/models/attachment.rb
@@ -196,6 +196,21 @@ class Attachment < ActiveRecord::Base
     suffix
   end
 
+  # 文件密级的字符描述
+  def file_dense_str
+    if self.is_public == 1
+      dense = l(:field_is_public)
+    else
+      dense =  l(:field_is_private)
+    end
+    dense
+  end
+
+  # 文件可设置的密级列表
+  def file_dense_list
+    denselist = [l(:field_is_public),l(:field_is_private)]
+  end
+
   def suffixArr
     @@SuffixArr
   end
diff --git a/app/models/course.rb b/app/models/course.rb
index 5034ab0d8..b6974eed0 100644
--- a/app/models/course.rb
+++ b/app/models/course.rb
@@ -90,6 +90,18 @@ class Course < ActiveRecord::Base
     false
   end
 
+  # Returns the mail adresses of users that should be always notified on project events
+  def recipients
+    notified_users.collect {|user| user.mail}
+  end
+
+  # Returns the users that should be notified on project events
+  def notified_users
+    # TODO: User part should be extracted to User#notify_about?
+    members.select {|m| m.principal.present? && (m.mail_notification? || m.principal.mail_notification == 'all')}.collect {|m| m.principal}
+  end
+
+
   # 课程的短描述信息
   def short_description(length = 255)
     description.gsub(/^(.{#{length}}[^\n\r]*).*$/m, '\1...').strip if description
@@ -112,6 +124,7 @@ class Course < ActiveRecord::Base
     @attachmenttypes = Attachmentstype.find(:all, :conditions => ["#{Attachmentstype.table_name}.typeId= ?",self.attachmenttype ])
   end
 
+
   # 获取资源后缀名列表
   def contenttypes
     attachmenttypes
diff --git a/app/models/mailer.rb b/app/models/mailer.rb
index ef4996eac..131c72c8c 100644
--- a/app/models/mailer.rb
+++ b/app/models/mailer.rb
@@ -141,6 +141,19 @@ class Mailer < ActionMailer::Base
       :subject => s
   end
 
+  # 用户申请加入项目邮件通知
+  def applied_project(applied)
+    @project =applied.project
+    redmine_headers 'Project' => @project,
+                    'User' =>  applied.user
+    @user = applied.user
+    recipients = @project.manager_recipients
+    s = l(:text_applied_project, :id => "##{@user.show_name}", :project => @project.name)
+    @applied_url =  url_for(:controller => 'projects', :action => 'settings', :id => @project.id,:tab=>'members')
+    mail :to => recipients,
+         :subject => s
+  end
+
   def reminder(user, issues, days)
     set_language_if_valid user.language
     @issues = issues
@@ -177,25 +190,45 @@ class Mailer < ActionMailer::Base
     added_to_url = ''
     @author = attachments.first.author
     case container.class.name
-    when 'Project'
-      added_to_url = url_for(:controller => 'files', :action => 'index', :project_id => container)
-      added_to = "#{l(:label_project)}: #{container}"
-      recipients = container.project.notified_users.select {|user| user.allowed_to?(:view_files, container.project)}.collect  {|u| u.mail}
-    when 'Version'
-      added_to_url = url_for(:controller => 'files', :action => 'index', :project_id => container.project)
-      added_to = "#{l(:label_version)}: #{container.name}"
-      recipients = container.project.notified_users.select {|user| user.allowed_to?(:view_files, container.project)}.collect  {|u| u.mail}
-    when 'Document'
-      added_to_url = url_for(:controller => 'documents', :action => 'show', :id => container.id)
-      added_to = "#{l(:label_document)}: #{container.title}"
-      recipients = container.recipients
+      when 'Project'
+        added_to_url = url_for(:controller => 'files', :action => 'index', :project_id => container)
+        added_to = "#{l(:label_project)}: #{container}"
+        recipients = container.notified_users.select { |user| user.allowed_to?(:view_files, container) }.collect { |u| u.mail }
+      when 'Course'
+        added_to_url = url_for(:controller => 'files', :action => 'index', :course_id => container)
+        added_to = "#{l(:label_course)}: #{container}"
+        recipients = container.notified_users.select { |user| user.allowed_to?(:view_files, container) }.collect { |u| u.mail }
+      when 'Version'
+        added_to_url = url_for(:controller => 'files', :action => 'index', :project_id => container.project)
+        added_to = "#{l(:label_version)}: #{container.name}"
+        recipients = container.project.notified_users.select { |user| user.allowed_to?(:view_files, container.project) }.collect { |u| u.mail }
+      when 'Document'
+        added_to_url = url_for(:controller => 'documents', :action => 'show', :id => container.id)
+        added_to = "#{l(:label_document)}: #{container.title}"
+        recipients = container.recipients
+    end
+    if container.class.name == 'Course'
+      redmine_headers 'Course' => container.id
+      @attachments = attachments
+      @added_to = added_to
+      @added_to_url = added_to_url
+      mail :to => recipients,
+           :subject => "[#{container.name}] #{l(:label_attachment_new)}"
+    elsif  container.class.name == 'Project'
+      redmine_headers 'Project' => container.id
+      @attachments = attachments
+      @added_to = added_to
+      @added_to_url = added_to_url
+      mail :to => recipients,
+           :subject => "[#{container.name}] #{l(:label_attachment_new)}"
+    else
+      redmine_headers 'Project' => container.project.identifier
+      @attachments = attachments
+      @added_to = added_to
+      @added_to_url = added_to_url
+      mail :to => recipients,
+           :subject => "[#{container.project.name}] #{l(:label_attachment_new)}"
     end
-    redmine_headers 'Project' => container.project.identifier
-    @attachments = attachments
-    @added_to = added_to
-    @added_to_url = added_to_url
-    mail :to => recipients,
-      :subject => "[#{container.project.name}] #{l(:label_attachment_new)}"
   end
 
   # Builds a Mail::Message object used to email recipients of a news' project when a news item is added.
diff --git a/app/models/project.rb b/app/models/project.rb
index 5efaf10ab..37ca8f20b 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -207,6 +207,12 @@ class Project < ActiveRecord::Base
   end
 # end
 
+  # 管理员的邮件列表
+  def manager_recipients
+    notified = project.project_infos.collect(&:user)
+    notified.collect(&:mail)
+  end
+
   def initialize(attributes=nil, *args)
     super
 
diff --git a/app/views/attachments/_form.html.erb b/app/views/attachments/_form.html.erb
index d568dd63c..7f1887b23 100644
--- a/app/views/attachments/_form.html.erb
+++ b/app/views/attachments/_form.html.erb
@@ -3,10 +3,10 @@
   <% container.attachments.each_with_index do |attachment, i| %>
     <span id="attachments_p<%= i %>" class="attachment">
       <%= text_field_tag("attachments[p#{i}][filename]", attachment.filename, :class => 'filename readonly', :readonly=>'readonly')%>
-
       <%= text_field_tag("attachments[p#{i}][description]", attachment.description, :maxlength => 255, :placeholder => l(:label_optional_description), :class => 'description', :style=>"display: inline-block;") +
           link_to('&nbsp;'.html_safe, attachment_path(attachment, :attachment_id => "p#{i}", :format => 'js'), :method => 'delete', :remote => true, :class => 'remove-upload') %>
       <%#= render :partial => 'tags/tag', :locals => {:obj => attachment, :object_flag => "6"} %>
+      <%= check_box_tag("attachments[p#{i}][is_public_checkbox]", attachment.is_public, :class => 'is_public')%>
       <%= hidden_field_tag "attachments[p#{i}][token]", "#{attachment.token}" %>
     </span>
   <% end %>
diff --git a/app/views/attachments/updateFileDense.js.erb b/app/views/attachments/updateFileDense.js.erb
new file mode 100644
index 000000000..86fa36d4c
--- /dev/null
+++ b/app/views/attachments/updateFileDense.js.erb
@@ -0,0 +1,15 @@
+$('#edit-file-dense-form-<%= @attachment.id.to_s%>').hide();
+$('#field_file_dense_id_label<%= @attachment.id.to_s%>').show();
+$('#edit_box_dense<%= @attachment.id.to_s%>').show();
+<%if @attachment.is_public == 1%>
+$('#field_file_dense_id_label<%= @attachment.id.to_s%>').html('公开');
+<%else%>
+$('#field_file_dense_id_label<%= @attachment.id.to_s%>').html('私有');
+<%end%>
+// 下面2种写法都没起作用，暂时使用上面的非本地化模式
+// <%if @attachment.is_public == 1%>
+// $('#field_file_dense_id_label<%= @attachment.id.to_s%>').html('<%l(:field_is_public)%>');
+// <%else%>
+// $('#field_file_dense_id_label<%= @attachment.id.to_s%>').html('<%l(:field_is_private)%>');
+// <%end%>
+// $('#field_file_dense_id_label<%= @attachment.id.to_s%>').html(<%=@newfiledense%>);
diff --git a/app/views/files/_course_file_dense_edit.html.erb b/app/views/files/_course_file_dense_edit.html.erb
new file mode 100644
index 000000000..53041ef14
--- /dev/null
+++ b/app/views/files/_course_file_dense_edit.html.erb
@@ -0,0 +1,13 @@
+<% edit_allowed = User.current.allowed_to?(:manage_files, @course) %>
+<% if file_dense_list.any? %>
+    <div id="edit-file-dense-form-<%=attachment.id%>" class="hidden">
+      <%= select_tag "file_dense",
+                     options_for_select(file_dense_list,attachment.file_dense_str), :onchange=>"file_dense_edit("+attachment.id.to_s + ",this.value)"%>
+    </div>
+    <%= link_to(image_tag('edit/edit.png'), 'javascript:void(0);',:style=>"white-space:nowrap;", :id=>"edit_box_dense"+attachment.id.to_s ,
+                :onclick =>"$('#edit-file-dense-form-" +attachment.id.to_s+ "').show();
+                $('#field_file_dense_id_label" +attachment.id.to_s+ "').hide();
+                $('#edit_box_dense" +attachment.id.to_s+ "').hide();") if edit_allowed %>
+
+<% end %>
+
diff --git a/app/views/files/_course_show_all_attachment.html.erb b/app/views/files/_course_show_all_attachment.html.erb
index 1a8a8ca65..a6da426c6 100644
--- a/app/views/files/_course_show_all_attachment.html.erb
+++ b/app/views/files/_course_show_all_attachment.html.erb
@@ -18,6 +18,7 @@
     <%= sort_header_tag('size', :caption => l(:field_filesize), :default_order => 'desc', :scope => "col", :id => "vzebra-children") %>
     <%= sort_header_tag('attach_type', :caption => l(:attachment_browse), :default_order => 'desc', :scope => "col", :id => "vzebra-attachmenttype") %>
     <%= sort_header_tag('content_type', :caption => l(:attachment_sufix_browse), :default_order => 'desc', :scope => "col", :id => "vzebra-contenttype") %>
+    <%= sort_header_tag('field_file_dense', :caption => l(:field_file_dense), :default_order => 'desc', :scope => "col", :id => "vzebra-field_file_dense") %>
     <%= sort_header_tag('downloads', :caption => l(:field_downloads), :default_order => 'desc', :scope => "col", :id => "vzebra-action") %>
     <%= sort_header_tag('operation', :caption => "", :scope => "col", :id => "vzebra-children") %>
     <!-- <%= sort_header_tag('description', :caption => l(:field_description)) %> -->
@@ -34,6 +35,9 @@
           </tr>
       <% end -%>
       <% container.attachments.each do |file| %>
+          <%if file.is_public == 0 && !User.current.member_of?(@project)%>
+              <%next%>
+          <%end%>
           <tr class="file <%= cycle("odd", "odd") %>">
             <td class="filename" style="font-size: 13px;  "><%= link_to_attachment file, :download => true, :title => file.filename+"\n"+file.description.to_s, :style => "width: 230px; overflow: hidden; white-space: nowrap;text-overflow: ellipsis;" %></td>
             <!-- <td class="created_on"><%#= format_time(file.created_on) %></td> -->
@@ -45,6 +49,14 @@
               </span>
             </td>
             <td class="content_type"><%= file.show_suffix_type %></td>
+            <td class="field_file_dense">
+              <span id="field_file_dense_id_label<%= file.id %>" style="white-space:nowrap;"><%= file.file_dense_str %></span>
+              &nbsp;
+      <span id="field_file_dense_id_edit<%= file.id %>" style="white-space:nowrap;">
+        <%= render :partial => 'course_file_dense_edit', :locals => {:file_dense_list => file.file_dense_list,
+                                                                     :attachment => file} %>
+        </span>
+            </td>
             <td class="downloads"><%= file.downloads %></td>
             <!-- <td class="digest" width="300px"><%= file.description %></td> -->
             <td align="center">
diff --git a/app/views/files/_course_sort_by_attachtypel.html.erb b/app/views/files/_course_sort_by_attachtypel.html.erb
index f73cac072..cda832493 100644
--- a/app/views/files/_course_sort_by_attachtypel.html.erb
+++ b/app/views/files/_course_sort_by_attachtypel.html.erb
@@ -5,66 +5,78 @@
 <% edit_allowed = User.current.allowed_to?(:manage_files, @course) %>
 <table class="list files" id="ver-zebra">
   <colgroup>
-  <col class="vzebra-odd"/>
-  <col class="vzebra-even"/>
-  <col class="vzebra-odd"/>
-  <col class="vzebra-even"/>
-  <!-- <col class="vzebra-odd"/> -->
-</colgroup>
-<thead>
+    <col class="vzebra-odd"/>
+    <col class="vzebra-even"/>
+    <col class="vzebra-odd"/>
+    <col class="vzebra-even"/>
+    <!-- <col class="vzebra-odd"/> -->
+  </colgroup>
+  <thead>
   <tr>
     <%= sort_header_tag('filename', :caption => l(:field_filename), :scope => "col", :id => "vzebra-adventure") %>
     <%#= sort_header_tag('created_on', :caption => l(:label_date), :default_order => 'desc', :scope => "col", :id => "vzebra-comedy") %>
     <%= sort_header_tag('size', :caption => l(:field_filesize), :default_order => 'desc', :scope => "col", :id => "vzebra-children") %>
     <%= sort_header_tag('attach_type', :caption => l(:attachment_browse), :default_order => 'desc', :scope => "col", :id => "vzebra-attachmenttype") %>
-    <%= sort_header_tag('content_type', :caption => l(:attachment_sufix_browse), :default_order => 'desc', :scope =>"col", :id=> "vzebra-contenttype")%>
+    <%= sort_header_tag('content_type', :caption => l(:attachment_sufix_browse), :default_order => 'desc', :scope => "col", :id => "vzebra-contenttype") %>
+    <%= sort_header_tag('field_file_dense', :caption => l(:field_file_dense), :default_order => 'desc', :scope => "col", :id => "vzebra-field_file_dense") %>
     <%= sort_header_tag('downloads', :caption => l(:field_downloads), :default_order => 'desc', :scope => "col", :id => "vzebra-action") %>
     <%= sort_header_tag('operation', :caption => "", :scope => "col", :id => "vzebra-children") %>
     <!-- <%= sort_header_tag('description', :caption => l(:field_description)) %> -->
   </tr>
-</thead>
-<tbody>
+  </thead>
+  <tbody>
   <% @containers.each do |container| %>
-  <% next if container.attachments.empty? -%>
-  <% container.attachments.each do |file| %>
-  <% if isTypeOk(file,selAttachType,selContentType) %>
-  <tr class="file <%= cycle("odd", "odd") %>">
-    <td class="filename" style="font-size: 13px; "><%= link_to_attachment file, :download => true, :title => file.filename+"\n"+file.description.to_s, :style => "width: 230px; overflow: hidden; white-space: nowrap;text-overflow: ellipsis;" %></td>
-    <!-- <td class="created_on"><%#= format_time(file.created_on) %></td> -->
-    <td class="filesize"><%= number_to_human_size(file.filesize) %></td>
-    <td class="attach_type">
-      <span id="attach_type_id_label<%= file.id %>" style="white-space:nowrap;"><%= file.attachmentstype.typeName %></span>
-      &nbsp;
+      <% next if container.attachments.empty? -%>
+      <% container.attachments.each do |file| %>
+          <% if file.is_public == 0 && !User.current.member_of?(@project) %>
+              <% next %>
+          <% end %>
+          <% if isTypeOk(file, selAttachType, selContentType) %>
+              <tr class="file <%= cycle("odd", "odd") %>">
+                <td class="filename" style="font-size: 13px; "><%= link_to_attachment file, :download => true, :title => file.filename+"\n"+file.description.to_s, :style => "width: 230px; overflow: hidden; white-space: nowrap;text-overflow: ellipsis;" %></td>
+                <!-- <td class="created_on"><%#= format_time(file.created_on) %></td> -->
+                <td class="filesize"><%= number_to_human_size(file.filesize) %></td>
+                <td class="attach_type">
+                  <span id="attach_type_id_label<%= file.id %>" style="white-space:nowrap;"><%= file.attachmentstype.typeName %></span>
+                  &nbsp;
       <span id="attach_type_id_edit<%= file.id %>" style="white-space:nowrap;">
         <%= render :partial => 'attachments/course_type_edit', :locals => {:attachmenttypes => attachmenttypes,
-          :attachment => file,:contentype=>selContentType} %>
+                                                                           :attachment => file, :contentype => selContentType} %>
         </span>
-      </td>
-      <td class="content_type"><%= file.show_suffix_type %></td>
-      <td class="downloads"><%= file.downloads %></td>
-      <!-- <td class="digest" width="300px"><%= file.description %></td> -->
-      <td align="center">
-        <%= link_to(image_tag('delete.png'), attachment_path(file),
-        :data => {:confirm => l(:text_are_you_sure)}, :method => :delete) if delete_allowed %>
-      </td>
-    </tr>
-    <tr>
-      <td class='description' colspan="6">
-        <div class="tags_area">
-          <%# @preTags = %w|预设A 预设B 预设C 预设D 预设E 预设Z | %>
-          <%= render :partial => 'tags/tag', :locals => {:obj => file, :object_flag => "6"} %>
-          <div class="tags_gradint"></div>
-        </div>
-        <div class="read-more hidden"><a href="javascript:void(0);" onclick="readmore(this);"> 更多 </a>
-        </div>
-      </td>
-    </tr>
-    <% end -%>
-    <% end -%>
-    <% reset_cycle %>
-    <% end -%>
-    <!-- %= h downloadAll(@containers) % -->
-    <!-- %= link_to "download all file", (downloadAll(@containers)) % -->
+                </td>
+                <td class="content_type"><%= file.show_suffix_type %></td>
+                <td class="field_file_dense">
+                  <span id="field_file_dense_id_label<%= file.id %>" style="white-space:nowrap;"><%= file.file_dense_str %></span>
+                  &nbsp;
+      <span id="field_file_dense_id_edit<%= file.id %>" style="white-space:nowrap;">
+        <%= render :partial => 'course_file_dense_edit', :locals => {:file_dense_list => file.file_dense_list,
+                                                                     :attachment => file} %>
+        </span>
+                </td>
+                <td class="downloads"><%= file.downloads %></td>
+                <!-- <td class="digest" width="300px"><%= file.description %></td> -->
+                <td align="center">
+                  <%= link_to(image_tag('delete.png'), attachment_path(file),
+                              :data => {:confirm => l(:text_are_you_sure)}, :method => :delete) if delete_allowed %>
+                </td>
+              </tr>
+              <tr>
+                <td class='description' colspan="6">
+                  <div class="tags_area">
+                    <%# @preTags = %w|预设A 预设B 预设C 预设D 预设E 预设Z | %>
+                    <%= render :partial => 'tags/tag', :locals => {:obj => file, :object_flag => "6"} %>
+                    <div class="tags_gradint"></div>
+                  </div>
+                  <div class="read-more hidden"><a href="javascript:void(0);" onclick="readmore(this);"> 更多 </a>
+                  </div>
+                </td>
+              </tr>
+          <% end -%>
+      <% end -%>
+      <% reset_cycle %>
+  <% end -%>
+  <!-- %= h downloadAll(@containers) % -->
+  <!-- %= link_to "download all file", (downloadAll(@containers)) % -->
 
   </tbody>
 </table>
diff --git a/app/views/files/_project_file_dense_edit.html.erb b/app/views/files/_project_file_dense_edit.html.erb
new file mode 100644
index 000000000..daa4b927d
--- /dev/null
+++ b/app/views/files/_project_file_dense_edit.html.erb
@@ -0,0 +1,13 @@
+<% edit_allowed = User.current.allowed_to?(:manage_files, @project) %>
+<% if file_dense_list.any? %>
+    <div id="edit-file-dense-form-<%=attachment.id%>" class="hidden">
+      <%= select_tag "file_dense",
+                     options_for_select(file_dense_list,attachment.file_dense_str), :onchange=>"file_dense_edit("+attachment.id.to_s + ",this.value)"%>
+    </div>
+    <%= link_to(image_tag('edit/edit.png'), 'javascript:void(0);',:style=>"white-space:nowrap;", :id=>"edit_box_dense"+attachment.id.to_s ,
+                :onclick =>"$('#edit-file-dense-form-" +attachment.id.to_s+ "').show();
+                $('#field_file_dense_id_label" +attachment.id.to_s+ "').hide();
+                $('#edit_box_dense" +attachment.id.to_s+ "').hide();") if edit_allowed %>
+
+<% end %>
+
diff --git a/app/views/files/_show_all_attachment.html.erb b/app/views/files/_show_all_attachment.html.erb
index 07dc6a27f..8c624d176 100644
--- a/app/views/files/_show_all_attachment.html.erb
+++ b/app/views/files/_show_all_attachment.html.erb
@@ -18,6 +18,7 @@
     <%= sort_header_tag('size', :caption => l(:field_filesize), :default_order => 'desc', :scope => "col", :id => "vzebra-children") %>
     <%= sort_header_tag('attach_type', :caption => l(:attachment_browse), :default_order => 'desc', :scope => "col", :id => "vzebra-attachmenttype") %>
     <%= sort_header_tag('content_type', :caption => l(:attachment_sufix_browse), :default_order => 'desc', :scope => "col", :id => "vzebra-contenttype") %>
+    <%= sort_header_tag('field_file_dense', :caption => l(:field_file_dense), :default_order => 'desc', :scope => "col", :id => "vzebra-field_file_dense") %>
     <%= sort_header_tag('downloads', :caption => l(:field_downloads), :default_order => 'desc', :scope => "col", :id => "vzebra-action") %>
     <%= sort_header_tag('operation', :caption => "", :scope => "col", :id => "vzebra-children") %>
     <!-- <%= sort_header_tag('description', :caption => l(:field_description)) %> -->
@@ -34,6 +35,9 @@
           </tr>
       <% end -%>
       <% container.attachments.each do |file| %>
+          <%if file.is_public == 0 && !User.current.member_of?(@project)%>
+          <%next%>
+          <%end%>
           <tr class="file <%= cycle("odd", "odd") %>">
             <td class="filename" style="font-size: 13px;  "><%= link_to_attachment file, :download => true, :title => file.filename+"\n"+file.description.to_s, :style => "width: 230px; overflow: hidden; white-space: nowrap;text-overflow: ellipsis;" %></td>
             <!-- <td class="created_on"><%#= format_time(file.created_on) %></td> -->
@@ -45,6 +49,14 @@
               </span>
             </td>
             <td class="content_type"><%= file.show_suffix_type %></td>
+            <td class="field_file_dense">
+              <span id="field_file_dense_id_label<%= file.id %>" style="white-space:nowrap;"><%= file.file_dense_str %></span>
+              &nbsp;
+      <span id="field_file_dense_id_edit<%= file.id %>" style="white-space:nowrap;">
+        <%= render :partial => 'project_file_dense_edit', :locals => {:file_dense_list => file.file_dense_list,
+                                                                      :attachment => file} %>
+        </span>
+            </td>
             <td class="downloads"><%= file.downloads %></td>
             <!-- <td class="digest" width="300px"><%= file.description %></td> -->
             <td align="center">
diff --git a/app/views/files/_sort_by_attachtypel.html.erb b/app/views/files/_sort_by_attachtypel.html.erb
index 01c57c490..d3723c340 100644
--- a/app/views/files/_sort_by_attachtypel.html.erb
+++ b/app/views/files/_sort_by_attachtypel.html.erb
@@ -5,66 +5,78 @@
 <% edit_allowed = User.current.allowed_to?(:manage_files, @project) %>
 <table class="list files" id="ver-zebra">
   <colgroup>
-  <col class="vzebra-odd"/>
-  <col class="vzebra-even"/>
-  <col class="vzebra-odd"/>
-  <col class="vzebra-even"/>
-  <!-- <col class="vzebra-odd"/> -->
-</colgroup>
-<thead>
+    <col class="vzebra-odd"/>
+    <col class="vzebra-even"/>
+    <col class="vzebra-odd"/>
+    <col class="vzebra-even"/>
+    <!-- <col class="vzebra-odd"/> -->
+  </colgroup>
+  <thead>
   <tr>
     <%= sort_header_tag('filename', :caption => l(:field_filename), :scope => "col", :id => "vzebra-adventure") %>
     <%#= sort_header_tag('created_on', :caption => l(:label_date), :default_order => 'desc', :scope => "col", :id => "vzebra-comedy") %>
     <%= sort_header_tag('size', :caption => l(:field_filesize), :default_order => 'desc', :scope => "col", :id => "vzebra-children") %>
     <%= sort_header_tag('attach_type', :caption => l(:attachment_browse), :default_order => 'desc', :scope => "col", :id => "vzebra-attachmenttype") %>
-    <%= sort_header_tag('content_type', :caption => l(:attachment_sufix_browse), :default_order => 'desc', :scope =>"col", :id=> "vzebra-contenttype")%>
+    <%= sort_header_tag('content_type', :caption => l(:attachment_sufix_browse), :default_order => 'desc', :scope => "col", :id => "vzebra-contenttype") %>
+    <%= sort_header_tag('field_file_dense', :caption => l(:field_file_dense), :default_order => 'desc', :scope => "col", :id => "vzebra-field_file_dense") %>
     <%= sort_header_tag('downloads', :caption => l(:field_downloads), :default_order => 'desc', :scope => "col", :id => "vzebra-action") %>
     <%= sort_header_tag('operation', :caption => "", :scope => "col", :id => "vzebra-children") %>
     <!-- <%= sort_header_tag('description', :caption => l(:field_description)) %> -->
   </tr>
-</thead>
-<tbody>
+  </thead>
+  <tbody>
   <% @containers.each do |container| %>
-  <% next if container.attachments.empty? -%>
-  <% container.attachments.each do |file| %>
-  <% if isTypeOk(file,selAttachType,selContentType) %>
-  <tr class="file <%= cycle("odd", "odd") %>">
-    <td class="filename" style="font-size: 13px; "><%= link_to_attachment file, :download => true, :title => file.filename+"\n"+file.description.to_s, :style => "width: 230px; overflow: hidden; white-space: nowrap;text-overflow: ellipsis;" %></td>
-    <!-- <td class="created_on"><%#= format_time(file.created_on) %></td> -->
-    <td class="filesize"><%= number_to_human_size(file.filesize) %></td>
-    <td class="attach_type">
-      <span id="attach_type_id_label<%= file.id %>" style="white-space:nowrap;"><%= file.attachmentstype.typeName %></span>
-      &nbsp;
+      <% next if container.attachments.empty? -%>
+      <% container.attachments.each do |file| %>
+          <% if file.is_public == 0 && !User.current.member_of?(@project) %>
+              <% next %>
+          <% end %>
+          <% if isTypeOk(file, selAttachType, selContentType) %>
+              <tr class="file <%= cycle("odd", "odd") %>">
+                <td class="filename" style="font-size: 13px; "><%= link_to_attachment file, :download => true, :title => file.filename+"\n"+file.description.to_s, :style => "width: 230px; overflow: hidden; white-space: nowrap;text-overflow: ellipsis;" %></td>
+                <!-- <td class="created_on"><%#= format_time(file.created_on) %></td> -->
+                <td class="filesize"><%= number_to_human_size(file.filesize) %></td>
+                <td class="attach_type">
+                  <span id="attach_type_id_label<%= file.id %>" style="white-space:nowrap;"><%= file.attachmentstype.typeName %></span>
+                  &nbsp;
       <span id="attach_type_id_edit<%= file.id %>" style="white-space:nowrap;">
         <%= render :partial => 'attachments/type_edit', :locals => {:attachmenttypes => attachmenttypes,
-          :attachment => file,:contentype=>selContentType} %>
+                                                                    :attachment => file, :contentype => selContentType} %>
         </span>
-      </td>
-      <td class="content_type"><%= file.show_suffix_type %></td>
-      <td class="downloads"><%= file.downloads %></td>
-      <!-- <td class="digest" width="300px"><%= file.description %></td> -->
-      <td align="center">
-        <%= link_to(image_tag('delete.png'), attachment_path(file),
-        :data => {:confirm => l(:text_are_you_sure)}, :method => :delete) if delete_allowed %>
-      </td>
-    </tr>
-    <tr>
-      <td class='description' colspan="6">
-        <div class="tags_area">
-          <%# @preTags = %w|预设A 预设B 预设C 预设D 预设E 预设Z | %>
-          <%= render :partial => 'tags/tag', :locals => {:obj => file, :object_flag => "6"} %>
-          <div class="tags_gradint"></div>
-        </div>
-        <div class="read-more hidden"><a href="javascript:void(0);" onclick="readmore(this);"> 更多 </a>
-        </div>
-      </td>
-    </tr>
-    <% end -%>
-    <% end -%>
-    <% reset_cycle %>
-    <% end -%>
-    <!-- %= h downloadAll(@containers) % -->
-    <!-- %= link_to "download all file", (downloadAll(@containers)) % -->
+                </td>
+                <td class="content_type"><%= file.show_suffix_type %></td>
+                <td class="field_file_dense">
+                  <span id="field_file_dense_id_label<%= file.id %>" style="white-space:nowrap;"><%= file.file_dense_str %></span>
+                  &nbsp;
+      <span id="field_file_dense_id_edit<%= file.id %>" style="white-space:nowrap;">
+        <%= render :partial => 'project_file_dense_edit', :locals => {:file_dense_list => file.file_dense_list,
+                                                                      :attachment => file} %>
+        </span>
+                </td>
+                <td class="downloads"><%= file.downloads %></td>
+                <!-- <td class="digest" width="300px"><%= file.description %></td> -->
+                <td align="center">
+                  <%= link_to(image_tag('delete.png'), attachment_path(file),
+                              :data => {:confirm => l(:text_are_you_sure)}, :method => :delete) if delete_allowed %>
+                </td>
+              </tr>
+              <tr>
+                <td class='description' colspan="6">
+                  <div class="tags_area">
+                    <%# @preTags = %w|预设A 预设B 预设C 预设D 预设E 预设Z | %>
+                    <%= render :partial => 'tags/tag', :locals => {:obj => file, :object_flag => "6"} %>
+                    <div class="tags_gradint"></div>
+                  </div>
+                  <div class="read-more hidden"><a href="javascript:void(0);" onclick="readmore(this);"> 更多 </a>
+                  </div>
+                </td>
+              </tr>
+          <% end -%>
+      <% end -%>
+      <% reset_cycle %>
+  <% end -%>
+  <!-- %= h downloadAll(@containers) % -->
+  <!-- %= link_to "download all file", (downloadAll(@containers)) % -->
 
   </tbody>
 </table>
diff --git a/app/views/files/index.html.erb b/app/views/files/index.html.erb
index b086b90db..69b41fc28 100644
--- a/app/views/files/index.html.erb
+++ b/app/views/files/index.html.erb
@@ -207,6 +207,23 @@
         <%end%>
 
     }
+
+    // 编辑文件密级
+    function file_dense_edit(id, type) {
+        $.ajax({
+            url: '<%=updateFileDense_attachments_path%>',
+            type: "POST",
+            remote:"true",
+            data: {
+                attachmentid: encodeURIComponent(id),
+                newtype: encodeURIComponent(type)
+            }
+
+        }).complete(function (xhr, textStatus) {
+                });
+
+    }
+
 </script>
 
 
diff --git a/app/views/mailer/applied_project.html.erb b/app/views/mailer/applied_project.html.erb
new file mode 100644
index 000000000..4f266e6ce
--- /dev/null
+++ b/app/views/mailer/applied_project.html.erb
@@ -0,0 +1,5 @@
+<%= l(:text_applied_project, :id => "##{@user.show_name}", :project => @project.name) %>
+<hr />
+
+<h1><%= link_to(h(@project.name), @applied_url) %></h1>
+
diff --git a/app/views/mailer/applied_project.text.erb b/app/views/mailer/applied_project.text.erb
new file mode 100644
index 000000000..7af8c2018
--- /dev/null
+++ b/app/views/mailer/applied_project.text.erb
@@ -0,0 +1,4 @@
+<%= l(:text_applied_project, :id => "##{@user.show_name}", :project => @project.name) %>
+
+<h1><%= link_to(h(@project.name), @applied_url) %></h1>
+
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 4c177b58e..2231100b7 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -233,6 +233,7 @@ en:
   field_mail: Email
   field_job_category: Job category   # added by bai
   field_filename: File
+  field_file_dense: File Dense
   field_filesize: Size
   field_downloads: Downloads
   field_author: Author
@@ -1079,6 +1080,7 @@ en:
   text_session_expiration_settings: "Warning: changing these settings may expire the current sessions including yours."
   text_project_closed: This project is closed and read-only.
   text_turning_multiple_off: "If you disable multiple values, multiple values will be removed in order to preserve only one value per item."
+  text_applied_project: "User %{id} Apply Join Project %{project}"
 
   default_role_manager: Manager
   default_role_developer: Developer
diff --git a/config/locales/zh.yml b/config/locales/zh.yml
index dcbd1d6ec..07802e7db 100644
--- a/config/locales/zh.yml
+++ b/config/locales/zh.yml
@@ -251,6 +251,7 @@ zh:
   field_lastname_eg: '(例：张三丰，请填写[张])'
   field_mail: 邮件地址
   field_filename: 文件
+  field_file_dense: 文件密级
   field_filesize: 大小
   field_downloads: 下载次数
   field_author: 作者
@@ -1105,6 +1106,7 @@ zh:
   text_own_membership_delete_confirmation: 你正在删除你现有的某些或全部权限，如果这样做了你可能将会再也无法编辑该项目了。你确定要继续吗？
   text_zoom_in: 放大
   text_zoom_out: 缩小
+  text_applied_project: "用户 %{id} 申请加入项目 %{project}"
 
   default_role_manager: 管理人员
   default_role_developer: 开发人员
diff --git a/config/routes.rb b/config/routes.rb
index f9dd53cf3..1ad026dc3 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -515,6 +515,7 @@ RedmineApp::Application.routes.draw do
   resources :attachments, :only => [:show, :destroy]  do
     collection do
       match "updateType" , via: [:get, :post]
+      match "updateFileDense" , via: [:get, :post]
       match "renderTag" , via: [:get, :post]
     end
   end
diff --git a/db/migrate/20140710024054_add_is_public_to_attachment.rb b/db/migrate/20140710024054_add_is_public_to_attachment.rb
new file mode 100644
index 000000000..2276304c8
--- /dev/null
+++ b/db/migrate/20140710024054_add_is_public_to_attachment.rb
@@ -0,0 +1,5 @@
+class AddIsPublicToAttachment < ActiveRecord::Migration
+  def change
+    add_column :attachments, :is_public, :integer,:default => 1
+  end
+end
diff --git a/db/migrate/20140710030426_update_attachment_public_attr.rb b/db/migrate/20140710030426_update_attachment_public_attr.rb
new file mode 100644
index 000000000..339c52543
--- /dev/null
+++ b/db/migrate/20140710030426_update_attachment_public_attr.rb
@@ -0,0 +1,22 @@
+class UpdateAttachmentPublicAttr < ActiveRecord::Migration
+  def up
+    # 更新资源文件的is_public属性
+    Attachment.all.each do |res|
+      if res.is_public
+        if(res.container.nil? ||
+            (res.container.class.to_s=="Project" && res.container.is_public == false) ||
+            (res.container.has_attribute?(:project) && res.container.project && res.container.project.is_public == false) ||
+            (res.container.class.to_s=="HomeworkAttach" && res.container.bid.reward_type == 3) ||
+            (res.container.class.to_s=="Course" && res.container.is_public == false) ||
+            (res.container.has_attribute?(:course) && res.container.course && res.container.course.is_public == false)
+        )
+          res.is_public = false
+          res.save
+        end
+      end
+    end
+  end
+
+  def down
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 93aa90c44..8fa520eba 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20140707095213) do
+ActiveRecord::Schema.define(:version => 20140710030426) do
 
   create_table "activities", :force => true do |t|
     t.integer "act_id",   :null => false
@@ -51,6 +51,7 @@ ActiveRecord::Schema.define(:version => 20140707095213) do
     t.string   "description"
     t.string   "disk_directory"
     t.integer  "attachtype",                   :default => 1
+    t.integer  "is_public",                    :default => 1
   end
 
   add_index "attachments", ["author_id"], :name => "index_attachments_on_author_id"
diff --git a/lib/plugins/acts_as_attachable/lib/acts_as_attachable.rb b/lib/plugins/acts_as_attachable/lib/acts_as_attachable.rb
index 30bbaedda..1318f8afa 100644
--- a/lib/plugins/acts_as_attachable/lib/acts_as_attachable.rb
+++ b/lib/plugins/acts_as_attachable/lib/acts_as_attachable.rb
@@ -60,11 +60,28 @@ module Redmine
           @unsaved_attachments ||= []
         end
 
+        # 设置资源文件的公开属性
+        # add by nwb
+        def set_attachment_public(res)
+          # 公开的资源判断他的父级的公开属性
+          if res.is_public
+            if( (self.class.to_s=="Project" && self.is_public == false) ||
+                (self.has_attribute?(:project) && self.project && self.project.is_public == false) ||
+                (self.class.to_s=="HomeworkAttach" && self.bid.reward_type == 3) ||
+                (self.class.to_s=="Course" && self.is_public == false) ||
+                (self.has_attribute?(:course) && self.course && self.course.is_public == false)
+            )
+              res.is_public = false
+            end
+          end
+        end
+
         def save_attachmentsex(attachments, author=User.current,attachment_type)
           @curattachment_type = attachment_type
           result = save_attachments(attachments,author)
           result
         end
+
         def save_attachments(attachments, author=User.current)
           if attachments.is_a?(Hash)
             attachments = attachments.stringify_keys
@@ -94,6 +111,10 @@ module Redmine
                 a.filename = attachment['filename'] unless attachment['filename'].blank?
                 a.content_type = attachment['content_type']
               end
+              if !attachment[:is_public]
+                a.is_public = false
+              end
+              set_attachment_public(a)
               next unless a
               a.description = attachment['description'].to_s.strip
               a.attachtype = @curattachment_type;
diff --git a/public/javascripts/attachments.js b/public/javascripts/attachments.js
index 663183b9a..c60a77bd3 100644
--- a/public/javascripts/attachments.js
+++ b/public/javascripts/attachments.js
@@ -23,7 +23,9 @@ function addFile(inputEl, file, eagerUpload) {
     fileSpan.append(
         $('<input>', { 'type': 'text', 'class': 'filename readonly', 'name': 'attachments[' + attachmentId + '][filename]', 'readonly': 'readonly'} ).val(file.name),
         $('<input>', { 'type': 'text', 'class': 'description', 'name': 'attachments[' + attachmentId + '][description]', 'maxlength': 255, 'placeholder': $(inputEl).data('description-placeholder') } ).toggle(!eagerUpload),
-       $('<a>&nbsp</a>').attr({ 'href': "#", 'class': 'remove-upload', 'data-confirm' : "您确定要删除吗？" }).click(removeFile).toggle(!eagerUpload),
+        $('<span >公开:</span>').attr({  'class': 'ispublic-label' }) ,
+        $('<input>', { 'type': 'checkbox', 'class': 'is_public_checkbox','value':1, 'name': 'attachments[' + attachmentId + '][is_public]', checked:'checked' } ).toggle(!eagerUpload),
+        $('<a>&nbsp</a>').attr({ 'href': "#", 'class': 'remove-upload', 'data-confirm' : "您确定要删除吗？" }).click(removeFile).toggle(!eagerUpload),
         $('<div>', {  'class': 'div_attachments', 'name': 'div_'+'attachments_' + attachmentId} )
     ).appendTo('#attachments_fields');
 
@@ -63,6 +65,7 @@ function ajaxUpload(file, attachmentId, fileSpan, inputEl) {
       .done(function(result) {
         progressSpan.progressbar( 'value', 100 ).remove();
         fileSpan.find('input.description, a').css('display', 'inline-block');
+        fileSpan.find('input.is_public_checkbox, a').css('display', 'inline-block');
       })
       .fail(function(result) {
         progressSpan.text(result.statusText);
diff --git a/public/stylesheets/application.css b/public/stylesheets/application.css
index 89ee39ada..10b8fb328 100644
--- a/public/stylesheets/application.css
+++ b/public/stylesheets/application.css
@@ -1850,6 +1850,8 @@ span.required {color: #bb0000;}
 #attachments_fields div.ui-progressbar { width: 100px; height:14px; margin: 2px 0 -5px 8px; display: inline-block; }
 a.remove-upload {background: url(../images/delete.png) no-repeat 1px 50%; width:1px; display:inline-block; padding-left:16px;}
 a.remove-upload:hover {text-decoration:none !important;}
+#attachments_fields input.is_public_checkbox {width:20px;}
+#attachments_fields span.ispublic-label {width:50px;margin-left:10px; }
 
 /*gcm upload file count and deleteall*/
 #upload_file_count #count {color:red; font-size:1.5em;}
diff --git a/public/stylesheets/nyan.css b/public/stylesheets/nyan.css
index 30496a061..b57796aa3 100644
--- a/public/stylesheets/nyan.css
+++ b/public/stylesheets/nyan.css
@@ -1081,6 +1081,11 @@ div.tags_area {
     border-bottom: 1px solid #c8d4fd;
 }
 
+#ver-zebra #vzebra-field_file_dense, #ver-zebra #vzebra-children {
+    background: #ffffff;
+    border-bottom: 1px solid #c8d4fd;
+}
+
 #ver-zebra #vzebra-comedy, #ver-zebra #vzebra-action {
     background: #ffffff;
     border-bottom: 1px solid #d6dfff;