# encoding: utf-8
#
# Redmine - project management software
# Copyright (C) 2006-2013  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.

require 'forwardable'
require 'cgi'

module ApplicationHelper
  include Redmine::WikiFormatting::Macros::Definitions
  include Redmine::I18n
  include GravatarHelper::PublicMethods
  include Redmine::Pagination::Helper
  include AvatarHelper
  ## added by william
  include PraiseTreadHelper
  include CoursesHelper

  extend Forwardable
  def_delegators :wiki_helper, :wikitoolbar_for, :heads_for_wiki_formatter

  # Time 2015-03-24 15:27:29
  # Author lizanle
  # Description 从硬盘上删除对应的资源文件
  def delete_kindeditor_assets_from_disk owner_id,owner_type
    assets = Kindeditor::Asset.where(["owner_id = ? and owner_type = ?",owner_id,owner_type])
    if !assets.nil? && !assets.blank?
      assets.all.each do |asset|
        next if asset.nil?
        filepath = File.join(Rails.root,"public","files","uploads",
                             asset[:created_at].to_s.gsub("+0800","").to_datetime.strftime("%Y%m").to_s,
                             asset[:asset].to_s)
        File.delete(filepath) if File.exist?filepath
      end
    end
  end
 # 获取组织成员中文名字
  def get_org_member_role_name member
    case member.roles[0].name
      when 'orgManager'
        '管理人员'
      when 'orgMember'
        '组织成员'
    end
  end

  # Time 2015-03-24 16:38:05
  # Author lizanle
  # Description after save后需要进行资源记录的更新
  # owner_type = 1 对应的是 memo
  # owner_type = 2 对应的是forum
  # owner_type = 3 对应的是message
  # owner_type = 4 对应的是news
  # owner_type = 5 对应的是comment
  def update_kindeditor_assets_owner ids,owner_id,owner_type
    ids.each do |id|
      asset = Kindeditor::Asset.find(id.to_i)
      asset.owner_id = owner_id
      asset.owner_type = owner_type
      asset.save
    end
  end

  # 更新课程英雄榜得分
  # user传过来必须是学生
  def course_member_score(course_id,user_id,type)
    course_contributor_score = CourseContributorScore.where("course_id =? and user_id =?", course_id, user_id).first
    case type
      when "JournalForMessage"
        if  course_contributor_score.nil?
          CourseContributorScore.create(:course_id => course_id, :user_id => user_id, :message_num => 0, :message_reply_num => 0,
                                            :news_reply_num => 0, :resource_num => 0, :journal_num => 1, :journal_reply_num => 0, :total_score => 1)
        else
          score = course_contributor_score.journal_num + 1
          total_score = course_contributor_score.total_score + 1
          course_contributor_score.update_attributes(:journal_num => score, :total_score => total_score)
        end
      when  "Message"
        if  course_contributor_score.nil?
          CourseContributorScore.create(:course_id => course_id, :user_id => user_id, :message_num => 2, :message_reply_num => 0,
                                            :news_reply_num => 0, :resource_num => 0, :journal_num => 0, :journal_reply_num => 0, :total_score => 2)
        else
          score = course_contributor_score.message_num + 2
          total_score = course_contributor_score.total_score + 2
          course_contributor_score.update_attributes(:message_num => score, :total_score => total_score)
        end
      when "MessageReply"
        if  course_contributor_score.nil?
          CourseContributorScore.create(:course_id => course_id, :user_id => user_id, :message_num => 0, :message_reply_num => 1,
                                            :news_reply_num => 0, :resource_num => 0, :journal_num => 0, :journal_reply_num => 0, :total_score => 1)
        else
          score = course_contributor_score.message_reply_num + 1
          total_score = course_contributor_score.total_score + 1
          course_contributor_score.update_attributes(:message_reply_num => score, :total_score => total_score)
        end
      when "NewReply"
        if  course_contributor_score.nil?
          CourseContributorScore.create(:course_id => course_id, :user_id => user_id, :message_num => 0, :message_reply_num => 0,
                                            :news_reply_num => 1, :resource_num => 0, :journal_num => 0, :journal_reply_num => 0, :total_score => 1)
        else
          score = course_contributor_score.news_reply_num + 1
          total_score = course_contributor_score.total_score + 1
          course_contributor_score.update_attributes(:news_reply_num => score, :total_score => total_score)
        end
    end
  end

  # Added by young
  # Define the course menu's link class
  # 不是数组的转化成数组，然后判断当前menu_item是否在给定的列表
  # REVIEW: 目测menu的机制，貌似不是很需要转换，再说
  def link_class(label)
    labels = label.is_a?(Array) ? label : ([] << label)
    #a = current_menu_item
    labels.include?(current_menu_item) ? 'selected' : ''

  end
  #Ended by young
  # Return true if user is authorized for controller/action, otherwise false
  def authorize_for(controller, action)
    User.current.allowed_to?({:controller => controller, :action => action}, @project)
  end

  # add by nwb
  def authorize_for_course(controller, action)
    User.current.allowed_to?({:controller => controller, :action => action}, @course)
  end

  def authorize_for_contest(controller, action)
    User.current.allowed_to?({:controller => controller, :action => action}, @contest)
  end

  # Display a link if user is authorized
  #
  # @param [String] name Anchor text (passed to link_to)
  # @param [Hash] options Hash params. This will checked by authorize_for to see if the user is authorized
  # @param [optional, Hash] html_options Options passed to link_to
  # @param [optional, Hash] parameters_for_method_reference Extra parameters for link_to
  def link_to_if_authorized(name, options = {}, html_options = nil, *parameters_for_method_reference)
    link_to(name, options, html_options, *parameters_for_method_reference) if authorize_for(options[:controller] || params[:controller], options[:action])
  end

  def link_to_if_authorized_course(name, options = {}, html_options = nil, *parameters_for_method_reference)
    link_to(name, options, html_options, *parameters_for_method_reference) if authorize_for_course(options[:controller] || params[:controller], options[:action])
  end

  def link_to_if_authorized_contest(name, options = {}, html_options = nil, *parameters_for_method_reference)
    link_to(name, options, html_options, *parameters_for_method_reference) if authorize_for_contest(options[:controller] || params[:controller], options[:action])
  end
  # Displays a link to user's account page if active
  def link_to_user(user, canShowRealName = false, options={})
    if user.is_a?(User)
      if canShowRealName
        name = h(user.realname(options[:format]))
      else
        name = h(user.name(options[:format]))
      end

      #if user.active? || (User.current.admin? && user.logged?)
      #  link_to name, {:controller=> 'users', :action => 'show', id: user.id, host: Setting.host_user}, :class => user.css_classes
      #else
      #  name
      #end
      link_to name, {:controller=> 'users', :action => 'show', id: user.id, host: Setting.host_user}, :class => user.css_classes
    else
      h(user.to_s)
    end
  end

  def link_to_isuue_user(user, options={})
    if user.is_a?(User)
      name = h(user.name(options[:format]))
      link_to name, {:controller=> 'users', :action => 'show', id: user.id, host: Setting.host_user}, :class => "pro_info_p"
    else
      h(user.to_s)
    end
  end

  def link_to_settings_user(user, options={})
    if user.is_a?(User)
      name = h(user.name(options[:format]))
      link_to name, {:controller=> 'users', :action => 'show', id: user.id, host: Setting.host_user}, :class => "w90 c_orange fl"
    else
      h(user.to_s)
    end
  end

  #重载上面方法，增加样式显示
  def link_to_user_header user,canShowRealName=false,options={}
    if user.is_a?(User)
      if canShowRealName
        name = user.show_name
        name = user.login if name == ""
      else
        name = user.login
      end
      link_to name, {:controller=> 'users', :action => 'show', id: user.id, host: Setting.host_user}, :class => options[:class]
    else
      h(user.to_s)
    end
  end

  # Displays a link to +issue+ with its subject.
  # Examples:
  #
  #   link_to_issue(issue)                        # => Defect #6: This is the subject
  #   link_to_issue(issue, :truncate => 6)        # => Defect #6: This i...
  #   link_to_issue(issue, :subject => false)     # => Defect #6
  #   link_to_issue(issue, :project => true)      # => Foo - Defect #6
  #   link_to_issue(issue, :subject => false, :tracker => false)     # => #6
  #
  def link_to_issue(issue, options={})
    title = nil
    subject = nil
    text = options[:tracker] == false ? "##{issue.id}" : "#{issue.tracker} ##{issue.id}"
    if options[:subject] == false
      title = truncate(issue.subject, :length => 60)
    else
      subject = issue.subject
      if options[:truncate]
        subject = truncate(subject, :length => options[:truncate])
      end
    end
    s = link_to text, issue_path(issue), :class => issue.css_classes, :title => title
    s << h(": #{subject}") if subject
    s = h("#{issue.project} - ") + s if options[:project]
    s
  end

  def link_to_issue_version(issue, options={})
    title = nil
    subject = nil
    text = options[:tracker] == false ? "##{issue.id}" : "#{issue.tracker} ##{issue.id}"
    if options[:subject] == false
      title = truncate(issue.subject, :length => 60)
    else
      subject = issue.subject
      if options[:truncate]
        subject = truncate(subject, :length => 60)
      end
    end
    if issue.status_id == 5
      s = link_to text, issue_path(issue), :class => "text_line_s", :title => title
    else
      s = link_to text, issue_path(issue), :class => "c_blue", :title => title
    end
    s << h(": #{subject}") if subject
    s = h("#{issue.project} - ") + s if options[:project]
    s
  end

  # Generates a link to an attachment.
  # Options:
  # * :text - Link text (default to attachment filename)
  # * :download - Force download (default: false)
  def link_to_short_attachment(attachment, options={})
    length = options[:length] ? options[:length]:23
    text = h(truncate(options.delete(:text) || attachment.filename, length: length, omission: '...'))
    route_method = options.delete(:download) ? :download_named_attachment_path : :named_attachment_path
    html_options = options.slice!(:only_path)
    url = send(route_method, attachment, attachment.filename, options)
    link_to text, url, html_options
  end

  # Generates a link to an attachment.
  # Options:
  # * :text - Link text (default to attachment filename)
  # * :download - Force download (default: false)
  def link_to_attachment(attachment, options={})
    token = options[:token] if options[:token]
    text = options.delete(:text) || attachment.filename
    route_method = options.delete(:download) ? :download_named_attachment_path : :named_attachment_path
    html_options = options.slice!(:only_path)
    url = send(route_method, attachment, attachment.filename, options)
    url << "?token=#{token}" unless token.nil?
    link_to text, url, html_options
  end

  def link_to_attachment_img(attachment, options={})
    text = options.delete(:text) || attachment.filename
    route_method = options.delete(:download) ? :download_named_attachment_path : :named_attachment_path
    html_options = options.slice!(:only_path)
    url = send(route_method, attachment, attachment.filename, options)
    image_tag  url, html_options
  end

  # Generates a link to a SCM revision
  # Options:
  # * :text - Link text (default to the formatted revision)
  def link_to_revision(revision, repository, options={})
    if repository.is_a?(Project)
      repository = repository.repository
    end
    text = options.delete(:text) || format_revision(revision)
    rev = revision.respond_to?(:identifier) ? revision.identifier : revision
    link_to(
        h(text),
        {:controller => 'repositories', :action => 'revision', :id => repository.project, :repository_id => repository.identifier_param, :rev => rev},
        :title => l(:label_revision_id, format_revision(revision))
    )
  end

  # Generates a link to a message
  def link_to_message(message, options={}, html_options = nil)
    link_to(
        truncate(message.subject, :length => 60),
        board_message_path(message.board_id, message.parent_id || message.id, {
            :r => (message.parent_id && message.id),
            :anchor => (message.parent_id ? "message-#{message.id}" : nil)
        }.merge(options)),
        html_options
    )
  end

  # Generates a link to a project if active
  # Examples:
  #
  #   link_to_project(project)                          # => link to the specified project overview
  #   link_to_project(project, {:only_path => false}, :class => "project") # => 3rd arg adds html options
  #   link_to_project(project, {}, :class => "project") # => html options with default url (project overview)
  #
  def link_to_project(project, options={}, html_options = nil)
    if project.archived?
      h(project.name)
    elsif options.key?(:action)
      ActiveSupport::Deprecation.warn "#link_to_project with :action option is deprecated and will be removed in Redmine 3.0."
      url = {:controller => 'projects', :action => 'show', :id => project}.merge(options)
      link_to project.name, url, html_options
    else
      link_to project.name, project_path(project, options), html_options
    end
  end

  def link_to_course(course, options={}, html_options = nil)
    if course.archived?
      h(course.name)
    elsif options.key?(:action)
      ActiveSupport::Deprecation.warn "#link_to_course with :action option is deprecated and will be removed in Redmine 3.0."
      url = {:controller => 'courses', :action => 'show', :id => project}.merge(options)
      link_to course.name, url, html_options
    else
      link_to course.name, course_path(course, options), html_options
    end
  end

  # Generates a link to a project settings if active
  def link_to_project_settings(project, options={}, html_options=nil)
    if project.active?
      link_to project.name, settings_project_path(project, options), html_options
    elsif project.archived?
      h(project.name)
    else
      link_to project.name, project_path(project, options), html_options
    end
  end

  def wiki_page_path(page, options={})
    url_for({:controller => 'wiki', :action => 'show', :project_id => page.project, :id => page.title}.merge(options))
  end

  def thumbnail_tag(attachment)
    link_to image_tag(thumbnail_path(attachment)),
            named_attachment_path(attachment, attachment.filename),
            :title => attachment.filename
  end

  def thumbnail_issue_tag(attachment)
    imagesize = attachment.thumbnail(:size => "200*200")
    imagepath = named_attachment_path(attachment, attachment.filename)
    if imagesize
      link_to image_tag(thumbnail_path(attachment), height: '73', width: '100', class: 'issue_attachment_picture'),
              imagepath,
              :title => attachment.filename

    else
      link_to image_tag(imagepath , height: '73', width: '100', class: 'issue_attachment_picture'),
              imagepath,
              :title => attachment.filename
    end
  end

  # 图片缩略图链接
  def thumbnail_small_tag(attachment)
    imagesize = attachment.thumbnail(:size => "200*200")
    imagepath = named_attachment_path(attachment, attachment.filename)
    if imagesize
      link_to image_tag(imagesize),
              imagepath,
              :title => attachment.filename
    else
      link_to image_tag(imagepath , height: '200', width: '250'),
              imagepath,
              :title => attachment.filename
    end
  end

  def toggle_link(name, id, options={})
    onclick = "$('##{id}').slideToggle(); "
    onclick << (options[:focus] ? "$('##{options[:focus]}').focus(); " : "this.blur(); ")
    onclick << "return false;"
    link_to(name, "javascript:void(0)", :onclick => onclick,:class => options[:class])
  end

  def image_to_function(name, function, html_options = {})
    html_options.symbolize_keys!
    tag(:input, html_options.merge({
                                       :type => "image", :src => image_path(name),
                                       :onclick => (html_options[:onclick] ? "#{html_options[:onclick]}; " : "") + "#{function};"
                                   }))
  end

  def format_activity_title(text)
    h(truncate_single_line(text, :length => 100))
  end

  def format_activity_day(date)
    date == User.current.today ? l(:label_today).titleize : format_date(date)
  end

  def format_activity_description(text)
    h(truncate(text.to_s, :length => 120).gsub(%r{[\r\n]*<(pre|code)>.*$}m, '...')).gsub(/[\r\n]+/, "<br />").html_safe
    #h(truncate(text.to_s, :length => 120).gsub(/<\/?.*?>/,"")).html_safe
  end

  def format_version_name(version)
    if version.project == @project
      h(truncate(version.name,:length=>20))
    else
      h("#{version.project} - #{truncate(version.name,:length=>20)}")
    end
  end

  def due_date_distance_in_words(date)
    if date
      l((date < Date.today ? :label_roadmap_overdue : :label_roadmap_due_in), distance_of_date_in_words(Date.today, date))
    end
  end

  # Renders a tree of projects as a nested set of unordered lists
  # The given collection may be a subset of the whole project tree
  # (eg. some intermediate nodes are private and can not be seen)
  #Modified by nie.
  def render_project_nested_lists(projects)
    s = ''
    if projects.any?
      ancestors = []
      original_project = @project
      #modified  by nie
      projects.each do |project|
        # set the project environment to please macros.
        @project = project
        if (ancestors.empty? || project.is_descendant_of?(ancestors.last))
#          s << "<ul class='projects #{ ancestors.empty? ? 'root' : nil}'>\n"
          s << "<ul class='projects'>\n"
        else
          ancestors.pop
          s << "</li>"
          while (ancestors.any? && !project.is_descendant_of?(ancestors.last))
            ancestors.pop
            s << "</ul></li>\n"
          end
        end
        classes = (ancestors.empty? ? 'root' : 'child')
        s << "<li class='project-table'><div class='#{classes}'>"
        if project.try(:project_type) == Project::ProjectType_project
          s << h(block_given? ? yield(project) : project.name)
        else
        end

        if project.try(:project_type) == Project::ProjectType_project
          unless User.current.member_of?(@project)
            s << "<span style = 'float: right;'>"
            s << watcher_link(@project, User.current)#, ['whiteButton'])
            s << "</span>"
          end
          s << (render :partial => 'projects/project', :locals => {:project => project}).to_s
        else
          s <<  (render :partial => 'projects/course', :locals => {:project => project}).to_s
        end
        s << "</div>\n"
        ancestors << project
      end
      s << ("</li></ul>\n" * ancestors.size)
      @project = original_project
    end
    s.html_safe
  end

  def render_course_nested_lists(courses)
    s = ''
    if courses.any?
      ancestors = []
      original_course = @course
      #modified  by nie
      courses.each do |course|
        # set the project environment to please macros.
        @course = course
        if (ancestors.empty? )#|| course.is_descendant_of?(ancestors.last))
          s << "<ul class=courses>\n"
        else
          ancestors.pop
          s << "</li>"
          while (ancestors.any? )#&& !course.is_descendant_of?(ancestors.last))
            ancestors.pop
            s << "</ul></li>\n"
          end
        end
        classes = (ancestors.empty? ? 'root' : 'child')
        s << "<li class='project-table'><div class='#{classes}'>"

        s <<  (render :partial => 'courses/course', :locals => {:course => course}).to_s
        s << "</div>\n"
        ancestors << course
      end
      s << ("</li></ul>\n" * ancestors.size)
      @course = original_course
    end
    s.html_safe
  end


  #added by young
  def render_project_nested_lists_new(projects)
    s = ''
    if projects.any?
      ancestors = []
      original_project = @project
      projects.sort_by(&:lft).each do |project|
        # set the project environment to please macros.
        @project = project
        if (ancestors.empty? || project.is_descendant_of?(ancestors.last))
#          s << "<ul class='projects #{ ancestors.empty? ? 'root' : nil}'>\n"
          s << "<ul class='projects'>\n"
        else
          ancestors.pop
          s << "</li>"
          while (ancestors.any? && !project.is_descendant_of?(ancestors.last))
            ancestors.pop
            s << "</ul></li>\n"
          end
        end
        classes = (ancestors.empty? ? 'root' : 'child')
        s << h(block_given? ? yield(project) : project.name)
        ancestors << project
      end
      s << ("</li></ul>\n" * ancestors.size)
      @project = original_project
    end
    s.html_safe
  end
  #end
  def render_page_hierarchy(pages, node=nil, options={})
    content = ''
    if pages[node]
      content << "<ul class=\"pages-hierarchy\">\n"
      pages[node].each do |page|
        content << "<li>"
        content << link_to(h(page.pretty_title), {:controller => 'wiki', :action => 'show', :project_id => page.project, :id => page.title, :version => nil},
                           :title => (options[:timestamp] && page.updated_on ? l(:label_updated_time, distance_of_time_in_words(Time.now, page.updated_on)) : nil))
        content << "\n" + render_page_hierarchy(pages, page.id, options) if pages[page.id]
        content << "</li>\n"
      end
      content << "</ul>\n"
    end
    content.html_safe
  end

  # Renders flash messages
  def render_flash_messages
    s = ''
    flash.each do |k,v|
      s << content_tag('div', v.html_safe, :class => "flash #{k}", :id => "flash_#{k}")
    end
    s.html_safe
  end

  # Renders tabs and their content
  def render_tabs(tabs)
    if tabs.any?
      render :partial => 'common/tabs', :locals => {:tabs => tabs}
    else
      content_tag 'p', l(:label_no_data), :class => "nodata"
    end
  end

  def render_project_settings_tabs(tabs)
    if tabs.any?
      render :partial => 'common/project_tab', :locals => {:tabs => tabs}
    else
      content_tag 'p', l(:label_no_data), :class => "nodata"
    end
  end

  # Renders the project quick-jump box
  def render_project_jump_box
    return unless User.current.logged?
    projects = User.current.memberships.collect(&:project).compact.select(&:active?).uniq
    if projects.any?
      options =
          ("<option value=''>#{ l(:label_jump_to_a_project) }</option>" +
              '<option value="" disabled="disabled">---</option>').html_safe

      options << project_tree_options_for_select(projects, :selected => @project) do |p|
        { :value => project_path(:id => p, :jump => current_menu_item) }
      end

      select_tag('project_quick_jump_box', options, :onchange => 'if (this.value != \'\') { window.location = this.value; }')
    end
  end

  def project_tree_options_for_select(projects, options = {})
    s = ''
    project_tree(projects) do |project, level|
      name_prefix = (level > 0 ? '&nbsp;' * 2 * level + '&#187; ' : '').html_safe
      tag_options = {:value => project.id}
      tag_options[:title] = project.name
      if project == options[:selected] || (options[:selected].respond_to?(:include?) && options[:selected].include?(project))
        tag_options[:selected] = 'selected'
      else
        tag_options[:selected] = nil
      end
      tag_options.merge!(yield(project)) if block_given?
      s << content_tag('option', name_prefix + h(project), tag_options)
    end
    s.html_safe
  end

  # Yields the given block for each project with its level in the tree
  #
  # Wrapper for Project#project_tree
  def project_tree(projects, &block)
    Project.project_tree(projects, &block)
  end

  # 项目版本库可见权限判断
  # 条件：1、modules中设置不可见或项目没有版本库；2、如果项目是私有或者项目版本库隐藏则必须是项目成员才可见
  def visible_repository?(project)
    @result = false
    unless project.enabled_modules.where("name = 'repository'").empty? || project.repositories.count == 0
      if (project.hidden_repo || !project.is_public?)
        if User.current.member_of?(project)
          @result = true
        end
      else
        @result = true
      end
    end
    return @result
  end

  # 判断版本库是否初始为gitlab
  def rep_is_gitlab?(project)
    rep = Repository.where("project_id =? and type =?", project, "Repository::Gitlab")
    return rep.blank? ? true :false
  end

  # 获取单一gitlab项目
  def gitlab_repository(project)
    rep = Repository.where("project_id =? and type =?", project.id,"Repository::Gitlab" ).first
  end

  # 判断当前用户是否为项目管理员
  def is_project_manager?(user_id, project_id)
    @result = false
    mem = Member.where("user_id = ? and project_id = ?",user_id, project_id)
    unless mem.blank?
      @result = mem.first.roles.to_s.include?("Manager") ? true : false
    end
    return @result
  end

  # 公开项目资源可以引用，admin和管理员和资源上传者拥有设置公开私有权限
  def authority_pubilic_for_files(project, file)
    @result = false
    if (is_project_manager?(User.current.id, @project.id) &&  User.current.allowed_to?(:manage_files, project)) || file.author_id == User.current.id || User.current.admin &&
      project_contains_attachment?(project,file) && file.container_id == project.id && file.container_type == "Project"
      @result = true
    end
    return @result
  end

  def principals_check_box_tags(name, principals)
    s = ''
    principals.each do |principal|
      s << "<label>#{ check_box_tag name, principal.id, false, :id => nil } #{h principal}</label>\n"
    end
    s.html_safe
  end

  #项目成员列表复选框生成
  def project_member_check_box_tags_ex name, principals
    s = ''
    principals.each do |principal|
      s << "<li>#{ check_box_tag name, principal.id, false, :id => nil } #{h link_to principal.userInfo, user_path( principal.id)}</li>\n"
    end
    s.html_safe
  end

  #缺陷追踪者列表复选框生成
  def issue_watcher_check_box_tags_ex name, principals
    s = ''
    principals.each do |principal|
      s << "<li>#{ check_box_tag name, principal.id, false, :id => nil } #{h link_to principal.userInfo, user_path( principal.id)}</li>\n"
    end
    s.html_safe
  end



  #扩展的checkbox生成
  def principals_check_box_tags_ex(name, principals)
    s = ''
    principals.each do |principal|
      s << "<label>#{ check_box_tag name, principal.id, false, :id => nil } #{h link_to principal.userInfo, user_path( principal.id)}</label>\n"
    end
    s.html_safe
  end

  # li标签checkbos扩展
  def principals_check_box_tags_li(name, principals)
    s = ''
    principals.each do |principal|
      s << "<li>#{ check_box_tag name, principal.id, false, :id => nil } #{h link_to principal.userInfo, user_path( principal.id) }</li>\n"
    end
    s.html_safe
  end

  #扩展的checkbox生成
  def principals_radio_box_tags_ex(name, principals)
    s = ''
    principals.each do |principal|
      s << "<label>#{ radio_button_tag name, principal.id, false, :id => nil } #{h principal.userInfo }</label>\n"
    end
    s.html_safe
  end


  # Returns a string for users/groups option tags
  def principals_options_for_select(collection, selected=nil)
    s = ''
    if collection.include?(User.current)
      s << content_tag('option', "<< #{l(:label_me)} >>", :value => User.current.id)
    end
    groups = ''
    collection.sort.each do |element|
      selected_attribute = ' selected="selected"' if option_value_selected?(element, selected)
      (element.is_a?(Group) ? groups : s) << %(<option value="#{element.id}"#{selected_attribute}>#{h element.name}</option>)
    end
    unless groups.empty?
      s << %(<optgroup label="#{h(l(:label_group_plural))}">#{groups}</optgroup>)
    end
    s.html_safe
  end

  # Options for the new membership projects combo-box
  def options_for_membership_project_select(principal, projects)
    options = content_tag('option', "--- #{l(:actionview_instancetag_blank_option)} ---")
    options << project_tree_options_for_select(projects) do |p|
      {:disabled => principal.projects.to_a.include?(p)}
    end
    options
  end

  # Truncates and returns the string as a single line
  def truncate_single_line(string, *args)
    truncate(string.to_s, *args).gsub(%r{[\r\n]+}m, ' ')
  end

  # Truncates at line break after 250 characters or options[:length]
  def truncate_lines(string, options={})
    length = options[:length] || 250
    if string.to_s =~ /\A(.{#{length}}.*?)$/m
      "#{$1}..."
    else
      string
    end
  end

  def anchor(text)
    text.to_s.gsub(' ', '_')
  end

  def html_hours(text)
    text.gsub(%r{(\d+)\.(\d+)}, '<span class="hours hours-int">\1</span><span class="hours hours-dec">.\2</span>').html_safe
  end

  def authoring(created, author, options={})
    l(options[:label] || :label_added_time_by, :author => link_to_user(author), :age => time_tag(created)).html_safe
  end

  def added_time(created)
    l(:label_added_time, :age => time_tag(created)).html_safe
  end

  def user_url_and_time(user_name, user_url, created)
    unless user_name.nil? || user_name == ''
      l(:label_added_time_by, :author => link_to(user_name, user_url), :age => time_tag(created)).html_safe
    else
      l(:label_added_time, :age => time_tag(created)).html_safe
    end
  end

  #huang
  def betweentime(enddate)
    ss=(DateTime.parse("#{enddate.to_date}")-DateTime.parse("#{DateTime.now.to_date}")).to_i
    return ss
  end

  def time_tag(time, *args)
    options  = args.extract_options!
    text = distance_of_time_in_words(Time.now, time)
    if @project
      content_tag('acronym', text, options.reverse_merge(:title => format_time(time)))
      # link_to(text, {:controller => 'activities', :action => 'index', :id => @project, :from => User.current.time_to_date(time)},options.reverse_merge(:title => format_time(time)))
    else
      content_tag('acronym', text, options.reverse_merge(:title => format_time(time)))
    end
  end

  def syntax_highlight_lines(name, content)
    lines = []
    syntax_highlight(name, content).each_line { |line| lines << line }
    lines
  end

  def syntax_highlight(name, content)
    Redmine::SyntaxHighlighting.highlight_by_filename(content, name)
  end

  def to_path_param(path)
    str = path.to_s.split(%r{[/\\]}).select{|p| !p.blank?}.join("/")
    str.blank? ? nil : str
  end

  def reorder_links(name, url, method = :post)
    link_to(image_tag('2uparrow.png', :alt => l(:label_sort_highest)),
            url.merge({"#{name}[move_to]" => 'highest'}),
            :method => method, :title => l(:label_sort_highest)) +
        link_to(image_tag('1uparrow.png',   :alt => l(:label_sort_higher)),
                url.merge({"#{name}[move_to]" => 'higher'}),
                :method => method, :title => l(:label_sort_higher)) +
        link_to(image_tag('1downarrow.png', :alt => l(:label_sort_lower)),
                url.merge({"#{name}[move_to]" => 'lower'}),
                :method => method, :title => l(:label_sort_lower)) +
        link_to(image_tag('2downarrow.png', :alt => l(:label_sort_lowest)),
                url.merge({"#{name}[move_to]" => 'lowest'}),
                :method => method, :title => l(:label_sort_lowest))
  end

  def breadcrumb(*args)
    elements = args.flatten
    elements.any? ? content_tag('p', (args.join(" \xc2\xbb ") + " \xc2\xbb ").html_safe, :class => 'wiki_con_tit"') : nil
  end

  def other_formats_links(&block)
    concat('<p class="other-formats fl">'.html_safe + l(:label_export_to))
    yield Redmine::Views::OtherFormatsBuilder.new(self)
    concat('</p>'.html_safe)
  end

  def page_header_title
    if @project.nil? || @project.new_record?
      h(Setting.app_title)
    else
      b = []
      ancestors = (@project.root? ? [] : @project.ancestors.visible.all)
      if ancestors.any?
        root = ancestors.shift
        b << link_to_project(root, {:jump => current_menu_item}, :class => 'root')
        if ancestors.size > 2
          b << "\xe2\x80\xa6"
          ancestors = ancestors[-2, 2]
        end
        b += ancestors.collect {|p| link_to_project(p, {:jump => current_menu_item}, :class => 'ancestor') }
      end
      b << h(@project)
      b.join(" \xc2\xbb ").html_safe
    end
  end

  def html_title(*args)
    #點擊項目版本庫 多觸發一次 字符串為"/"
    #暫時解決方法 直接判斷
    if(args == ["/"])
      args = []
    end
    first_page = FirstPage.find_by_page_type('project')
    if args.empty?
      title = @html_title || []
      title << @project.name if @project
      if first_page.nil? || first_page.web_title.nil?
        title << Setting.app_title unless Setting.app_title == title.last
      else
        title << first_page.web_title unless  first_page.web_title == title.last
      end
      title.select {|t| !t.blank? }.join(' - ')
    else
      @html_title ||= []
      @html_title += args
    end
  end

  # Returns the theme, controller name, and action as css classes for the
  # HTML body.
  def body_css_classes
    css = []
    if theme = Redmine::Themes.theme(Setting.ui_theme)
      css << 'theme-' + theme.name
    end

    css << 'controller-' + controller_name
    css << 'action-' + action_name
    css.join(' ')
  end

  def accesskey(s)
    @used_accesskeys ||= []
    key = Redmine::AccessKeys.key_for(s)
    return nil if @used_accesskeys.include?(key)
    @used_accesskeys << key
    key
  end

  # Formats text according to system settings.
  # 2 ways to call this method:
  # * with a String: textilizable(text, options)
  # * with an object and one of its attribute: textilizable(issue, :description, options)
  def textilizable(*args)
    options = args.last.is_a?(Hash) ? args.pop : {}
    case args.size
      when 1
        obj = options[:object]
        text = args.shift
      when 2
        obj = args.shift
        attr = args.shift
        text = obj.send(attr).to_s
      else
        raise ArgumentError, 'invalid arguments to textilizable'
    end
    return '' if text.blank?
    project = options[:project] || @project || (obj && obj.respond_to?(:project) ? obj.project : nil)
    only_path = options.delete(:only_path) == false ? false : true

    text = text.dup
    macros = catch_macros(text)
    text = Redmine::WikiFormatting.to_html(Setting.text_formatting, text, :object => obj, :attribute => attr)

    @parsed_headings = []
    @heading_anchors = {}
    @current_section = 0 if options[:edit_section_links]

    parse_sections(text, project, obj, attr, only_path, options)
    text = parse_non_pre_blocks(text, obj, macros) do |text|
      [:parse_inline_attachments, :parse_wiki_links, :parse_redmine_links].each do |method_name|
        send method_name, text, project, obj, attr, only_path, options
      end
    end
    parse_headings(text, project, obj, attr, only_path, options)

    if @parsed_headings.any?
      replace_toc(text, @parsed_headings)
    end

    text.html_safe
  end

  #
  #格式化字符串，不转义html代码
  def textAreailizable(*args)
    options = args.last.is_a?(Hash) ? args.pop : {}
    case args.size
      when 1
        obj = options[:object]
        text = args.shift
      when 2
        obj = args.shift
        attr = args.shift
        text = obj.send(attr).to_s
      else
        raise ArgumentError, 'invalid arguments to textilizable'
    end
    return '' if text.blank?
    project = options[:project] || @project || (obj && obj.respond_to?(:project) ? obj.project : nil)
    only_path = options.delete(:only_path) == false ? false : true

    text = text.dup
    macros = catch_macros(text)
    #text = Redmine::WikiFormatting.to_html("CKEditor", text, :object => obj, :attribute => attr)

    @parsed_headings = []
    @heading_anchors = {}
    @current_section = 0 if options[:edit_section_links]

    parse_sections(text, project, obj, attr, only_path, options)
    text = parse_non_pre_blocks(text, obj, macros) do |text|
      [:parse_inline_attachments, :parse_wiki_links, :parse_redmine_links].each do |method_name|
        send method_name, text, project, obj, attr, only_path, options
      end
    end
    parse_headings(text, project, obj, attr, only_path, options)

    if @parsed_headings.any?
      replace_toc(text, @parsed_headings)
    end

    text.html_safe
  end

  def parse_non_pre_blocks(text, obj, macros)
    s = StringScanner.new(text)
    tags = []
    parsed = ''
    while !s.eos?
      s.scan(/(.*?)(<(\/)?(pre|code)(.*?)>|\z)/im)
      text, full_tag, closing, tag = s[1], s[2], s[3], s[4]
      if tags.empty?
        yield text
        inject_macros(text, obj, macros) if macros.any?
      else
        inject_macros(text, obj, macros, false) if macros.any?
      end
      parsed << text
      if tag
        if closing
          if tags.last == tag.downcase
            tags.pop
          end
        else
          tags << tag.downcase
        end
        parsed << full_tag
      end
    end
    # Close any non closing tags
    while tag = tags.pop
      parsed << "</#{tag}>"
    end
    parsed
  end

  def parse_inline_attachments(text, project, obj, attr, only_path, options)
    # when using an image link, try to use an attachment, if possible
    attachments = options[:attachments] || []
    attachments += obj.attachments if obj.respond_to?(:attachments)
    if attachments.present?
      text.gsub!(/src="([^\/"]+\.(bmp|gif|jpg|jpe|jpeg|png))"(\s+alt="([^"]*)")?/i) do |m|
        filename, ext, alt, alttext = $1.downcase, $2, $3, $4
        # search for the picture in attachments
        if found = Attachment.latest_attach(attachments, filename)
          image_url = download_named_attachment_path(found, found.filename, :only_path => only_path)
          desc = found.description.to_s.gsub('"', '')
          if !desc.blank? && alttext.blank?
            alt = " title=\"#{desc}\" alt=\"#{desc}\""
          end
          "src=\"#{image_url}\"#{alt}"
        else
          m
        end
      end
    end
  end

  # Wiki links
  #
  # Examples:
  #   [[mypage]]
  #   [[mypage|mytext]]
  # wiki links can refer other project wikis, using project name or identifier:
  #   [[project:]] -> wiki starting page
  #   [[project:|mytext]]
  #   [[project:mypage]]
  #   [[project:mypage|mytext]]
  def parse_wiki_links(text, project, obj, attr, only_path, options)
    text.gsub!(/(!)?(\[\[([^\]\n\|]+)(\|([^\]\n\|]+))?\]\])/) do |m|
      link_project = project
      esc, all, page, title = $1, $2, $3, $5
      if esc.nil?
        if page =~ /^([^\:]+)\:(.*)$/
          identifier, page = $1, $2
          link_project = Project.find_by_identifier(identifier) || Project.find_by_name(identifier)
          title ||= identifier if page.blank?
        end

        if link_project && link_project.wiki
          # extract anchor
          anchor = nil
          if page =~ /^(.+?)\#(.+)$/
            page, anchor = $1, $2
          end
          anchor = sanitize_anchor_name(anchor) if anchor.present?
          # check if page exists
          wiki_page = link_project.wiki.find_page(page)
          url = if anchor.present? && wiki_page.present? && (obj.is_a?(WikiContent) || obj.is_a?(WikiContent::Version)) && obj.page == wiki_page
                  "##{anchor}"
                else
                  case options[:wiki_links]
                    when :local; "#{page.present? ? Wiki.titleize(page) : ''}.html" + (anchor.present? ? "##{anchor}" : '')
                    when :anchor; "##{page.present? ? Wiki.titleize(page) : title}" + (anchor.present? ? "_#{anchor}" : '') # used for single-file wiki export
                    else
                      wiki_page_id = page.present? ? Wiki.titleize(page) : nil
                      parent = wiki_page.nil? && obj.is_a?(WikiContent) && obj.page && project == link_project ? obj.page.title : nil
                      url_for(:only_path => only_path, :controller => 'wiki', :action => 'show', :project_id => link_project,
                              :id => wiki_page_id, :version => nil, :anchor => anchor, :parent => parent)
                  end
                end
          link_to(title.present? ? title.html_safe : h(page), url, :class => ('wiki-page' + (wiki_page ? '' : ' new')))
        else
          # project or wiki doesn't exist
          all
        end
      else
        all
      end
    end
  end

  def select_option_helper option
    tmp = Hash.new
    tmp={"" => ""}
    if option.nil?
    else
      option.each do |project|
        tmp[project.name] = project.id
      end
    end
    tmp
  end
  # Redmine links
  #
  # Examples:
  #   Issues:
  #     #52 -> Link to issue #52
  #   Changesets:
  #     r52 -> Link to revision 52
  #     commit:a85130f -> Link to scmid starting with a85130f
  #   Documents:
  #     document#17 -> Link to document with id 17
  #     document:Greetings -> Link to the document with title "Greetings"
  #     document:"Some document" -> Link to the document with title "Some document"
  #   Versions:
  #     version#3 -> Link to version with id 3
  #     version:1.0.0 -> Link to version named "1.0.0"
  #     version:"1.0 beta 2" -> Link to version named "1.0 beta 2"
  #   Attachments:
  #     attachment:file.zip -> Link to the attachment of the current object named file.zip
  #   Source files:
  #     source:some/file -> Link to the file located at /some/file in the project's repository
  #     source:some/file@52 -> Link to the file's revision 52
  #     source:some/file#L120 -> Link to line 120 of the file
  #     source:some/file@52#L120 -> Link to line 120 of the file's revision 52
  #     export:some/file -> Force the download of the file
  #   Forum messages:
  #     message#1218 -> Link to message with id 1218
  #
  #   Links can refer other objects from other projects, using project identifier:
  #     identifier:r52
  #     identifier:document:"Some document"
  #     identifier:version:1.0.0
  #     identifier:source:some/file
  def parse_redmine_links(text, default_project, obj, attr, only_path, options)
    text.gsub!(%r{([\s\(,\-\[\>]|^)(!)?(([a-z0-9\-_]+):)?(attachment|document|version|forum|news|message|project|commit|source|export)?(((#)|((([a-z0-9\-_]+)\|)?(r)))((\d+)((#note)?-(\d+))?)|(:)([^"\s<>][^\s<>]*?|"[^"]+?"))(?=(?=[[:punct:]][^A-Za-z0-9_/])|,|\s|\]|<|$)}) do |m|
      leading, esc, project_prefix, project_identifier, prefix, repo_prefix, repo_identifier, sep, identifier, comment_suffix, comment_id = $1, $2, $3, $4, $5, $10, $11, $8 || $12 || $18, $14 || $19, $15, $17
      link = nil
      project = default_project
      if project_identifier
        project = Project.visible.find_by_identifier(project_identifier)
      end
      if esc.nil?
        if prefix.nil? && sep == 'r'
          if project
            repository = nil
            if repo_identifier
              repository = project.repositories.detect {|repo| repo.identifier == repo_identifier}
            else
              repository = project.repository
            end
            # project.changesets.visible raises an SQL error because of a double join on repositories
            if repository && (changeset = Changeset.visible.find_by_repository_id_and_revision(repository.id, identifier))
              link = link_to(h("#{project_prefix}#{repo_prefix}r#{identifier}"), {:only_path => only_path, :controller => 'repositories', :action => 'revision', :id => project, :repository_id => repository.identifier_param, :rev => changeset.revision},
                             :class => 'changeset',
                             :title => truncate_single_line(changeset.comments, :length => 100))
            end
          end
        elsif sep == '#'
          oid = identifier.to_i
          case prefix
            when nil
              if oid.to_s == identifier && issue = Issue.visible.find_by_id(oid, :include => :status)
                anchor = comment_id ? "note-#{comment_id}" : nil
                link = link_to("##{oid}", {:only_path => only_path, :controller => 'issues', :action => 'show', :id => oid, :anchor => anchor},
                               :class => issue.css_classes,
                               :title => "#{truncate(issue.subject, :length => 100)} (#{issue.status.name})")
              end
            when 'document'
              if document = Document.visible.find_by_id(oid)
                link = link_to h(document.title), {:only_path => only_path, :controller => 'documents', :action => 'show', :id => document},
                               :class => 'document'
              end
            when 'version'
              if version = Version.visible.find_by_id(oid)
                link = link_to h(version.name), {:only_path => only_path, :controller => 'versions', :action => 'show', :id => version},
                               :class => 'version'
              end
            when 'message'
              if message = Message.visible.find_by_id(oid, :include => :parent)
                link = link_to_message(message, {:only_path => only_path}, :class => 'message')
              end
            when 'forum'
              if board = Board.visible.find_by_id(oid)
                link = link_to h(board.name), {:only_path => only_path, :controller => 'boards', :action => 'show', :id => board, :project_id => board.project},
                               :class => 'board'
              end
            when 'news'
              if news = News.visible.find_by_id(oid)
                link = link_to h(news.title), {:only_path => only_path, :controller => 'news', :action => 'show', :id => news},
                               :class => 'news'
              end
            when 'project'
              if p = Project.visible.find_by_id(oid)
                link = link_to_project(p, {:only_path => only_path}, :class => 'project')
              end
          end
        elsif sep == ':'
          # removes the double quotes if any
          name = identifier.gsub(%r{^"(.*)"$}, "\\1")
          case prefix
            when 'document'
              if project && document = project.documents.visible.find_by_title(name)
                link = link_to h(document.title), {:only_path => only_path, :controller => 'documents', :action => 'show', :id => document},
                               :class => 'document'
              end
            when 'version'
              if project && version = project.versions.visible.find_by_name(name)
                link = link_to h(version.name), {:only_path => only_path, :controller => 'versions', :action => 'show', :id => version},
                               :class => 'version'
              end
            when 'forum'
              if project && board = project.boards.visible.find_by_name(name)
                link = link_to h(board.name), {:only_path => only_path, :controller => 'boards', :action => 'show', :id => board, :project_id => board.project},
                               :class => 'board'
              end
            when 'news'
              if project && news = project.news.visible.find_by_title(name)
                link = link_to h(news.title), {:only_path => only_path, :controller => 'news', :action => 'show', :id => news},
                               :class => 'news'
              end
            when 'commit', 'source', 'export'
              if project
                repository = nil
                if name =~ %r{^(([a-z0-9\-_]+)\|)(.+)$}
                  repo_prefix, repo_identifier, name = $1, $2, $3
                  repository = project.repositories.detect {|repo| repo.identifier == repo_identifier}
                else
                  repository = project.repository
                end
                if prefix == 'commit'
                  if repository && (changeset = Changeset.visible.where("repository_id = ? AND scmid LIKE ?", repository.id, "#{name}%").first)
                    link = link_to h("#{project_prefix}#{repo_prefix}#{name}"), {:only_path => only_path, :controller => 'repositories', :action => 'revision', :id => project, :repository_id => repository.identifier_param, :rev => changeset.identifier},
                                   :class => 'changeset',
                                   :title => truncate_single_line(changeset.comments, :length => 100)
                  end
                else
                  if repository && User.current.allowed_to?(:browse_repository, project)
                    name =~ %r{^[/\\]*(.*?)(@([^/\\@]+?))?(#(L\d+))?$}
                    path, rev, anchor = $1, $3, $5
                    link = link_to h("#{project_prefix}#{prefix}:#{repo_prefix}#{name}"), {:controller => 'repositories', :action => (prefix == 'export' ? 'raw' : 'entry'), :id => project, :repository_id => repository.identifier_param,
                                                                                           :path => to_path_param(path),
                                                                                           :rev => rev,
                                                                                           :anchor => anchor},
                                   :class => (prefix == 'export' ? 'source download' : 'source')
                  end
                end
                repo_prefix = nil
              end
            when 'attachment'
              attachments = options[:attachments] || (obj && obj.respond_to?(:attachments) ? obj.attachments : nil)
              if attachments && attachment = Attachment.latest_attach(attachments, name)
                link = link_to_attachment(attachment, :only_path => only_path, :download => true, :class => 'attachment')
              end
            when 'project'
              if p = Project.visible.where("identifier = :s OR LOWER(name) = :s", :s => name.downcase).first
                link = link_to_project(p, {:only_path => only_path}, :class => 'project')
              end
          end
        end
      end
      (leading + (link || "#{project_prefix}#{prefix}#{repo_prefix}#{sep}#{identifier}#{comment_suffix}"))
    end
  end

  HEADING_RE = /(<h(\d)( [^>]+)?>(.+?)<\/h(\d)>)/i unless const_defined?(:HEADING_RE)

  def parse_sections(text, project, obj, attr, only_path, options)
    return unless options[:edit_section_links]
    text.gsub!(HEADING_RE) do
      heading = $1
      @current_section += 1
      if @current_section > 1
        content_tag('div',
                    link_to(image_tag('edit.png'), options[:edit_section_links].merge(:section => @current_section)),
                    :class => 'contextual',
                    :title => l(:button_edit_section)) + heading.html_safe
      else
        heading
      end
    end
  end

  # Headings and TOC
  # Adds ids and links to headings unless options[:headings] is set to false
  def parse_headings(text, project, obj, attr, only_path, options)
    return if options[:headings] == false

    text.gsub!(HEADING_RE) do
      level, attrs, content = $2.to_i, $3, $4
      item = strip_tags(content).strip
      anchor = sanitize_anchor_name(item)
      # used for single-file wiki export
      anchor = "#{obj.page.title}_#{anchor}" if options[:wiki_links] == :anchor && (obj.is_a?(WikiContent) || obj.is_a?(WikiContent::Version))
      @heading_anchors[anchor] ||= 0
      idx = (@heading_anchors[anchor] += 1)
      if idx > 1
        anchor = "#{anchor}-#{idx}"
      end
      @parsed_headings << [level, anchor, item]
      "<a name=\"#{anchor}\"></a>\n<h#{level} #{attrs}>#{content}<a href=\"##{anchor}\" class=\"wiki-anchor\">&para;</a></h#{level}>"
    end
  end

  MACROS_RE = /(
                (!)?                        # escaping
                (
                \{\{                        # opening tag
                ([\w]+)                     # macro name
                (\(([^\n\r]*?)\))?          # optional arguments
                ([\n\r].*?[\n\r])?          # optional block of text
                \}\}                        # closing tag
                )
               )/mx unless const_defined?(:MACROS_RE)

  MACRO_SUB_RE = /(
                  \{\{
                  macro\((\d+)\)
                  \}\}
                  )/x unless const_defined?(:MACRO_SUB_RE)

  # Extracts macros from text
  def catch_macros(text)
    macros = {}
    text.gsub!(MACROS_RE) do
      all, macro = $1, $4.downcase
      if macro_exists?(macro) || all =~ MACRO_SUB_RE
        index = macros.size
        macros[index] = all
        "{{macro(#{index})}}"
      else
        all
      end
    end
    macros
  end

  # Executes and replaces macros in text
  def inject_macros(text, obj, macros, execute=true)
    text.gsub!(MACRO_SUB_RE) do
      all, index = $1, $2.to_i
      orig = macros.delete(index)
      if execute && orig && orig =~ MACROS_RE
        esc, all, macro, args, block = $2, $3, $4.downcase, $6.to_s, $7.try(:strip)
        if esc.nil?
          h(exec_macro(macro, obj, args, block) || all)
        else
          h(all)
        end
      elsif orig
        h(orig)
      else
        h(all)
      end
    end
  end

  TOC_RE = /<p>\{\{([<>]?)toc\}\}<\/p>/i unless const_defined?(:TOC_RE)

  # Renders the TOC with given headings
  def replace_toc(text, headings)
    text.gsub!(TOC_RE) do
      # Keep only the 4 first levels
      headings = headings.select{|level, anchor, item| level <= 4}
      if headings.empty?
        ''
      else
        div_class = 'toc'
        div_class << ' right' if $1 == '>'
        div_class << ' left' if $1 == '<'
        out = "<ul class=\"#{div_class}\"><li>"
        root = headings.map(&:first).min
        current = root
        started = false
        headings.each do |level, anchor, item|
          if level > current
            out << '<ul><li>' * (level - current)
          elsif level < current
            out << "</li></ul>\n" * (current - level) + "</li><li>"
          elsif started
            out << '</li><li>'
          end
          out << "<a href=\"##{anchor}\">#{item}</a>"
          current = level
          started = true
        end
        out << '</li></ul>' * (current - root)
        out << '</li></ul>'
      end
    end
  end

  # Same as Rails' simple_format helper without using paragraphs
  def simple_format_without_paragraph(text)
    text.to_s.
        gsub(/\r\n?/, "\n").                    # \r\n and \r -> \n
        gsub(/\n\n+/, "<br /><br />").          # 2+ newline  -> 2 br
        gsub(/([^\n]\n)(?=[^\n])/, '\1<br />'). # 1 newline   -> br
        html_safe
  end

  def wiki_simple_format_without_paragraph(text)
    text.to_s.
        gsub(/\r\n?/, "\n").                    # \r\n and \r -> \n
        gsub(/\n\n+/, "<br /><br />").          # 2+ newline  -> 2 br
        gsub(/([^\n]\n)(?=[^\n])/, '\1<br />'). # 1 newline   -> br
        gsub("&amp;nbsp", " ").           #gsub(/<\/?.*?>/,"").
        gsub(/&lt;\/?.*?&gt;/, "").
        gsub("&quot;", "'").
        html_safe
  end

  def lang_options_for_select(blank=true)
    { 'Chinese简体中文 '=> 'zh', :English => :en}
  end

  def label_tag_for(name, option_tags = nil, options = {})
    label_text = l(("field_"+field.to_s.gsub(/\_id$/, "")).to_sym) + (options.delete(:required) ? @template.content_tag("span", " *", :class => "required"): "")
    content_tag("label", label_text)
  end

  def labelled_form_for(*args, &proc)
    args << {} unless args.last.is_a?(Hash)
    options = args.last
    if args.first.is_a?(Symbol)
      options.merge!(:as => args.shift)
    end
    options.merge!({:builder => Redmine::Views::LabelledFormBuilder})
    form_for(*args, &proc)
  end

  def labelled_fields_for(*args, &proc)
    args << {} unless args.last.is_a?(Hash)
    options = args.last
    options.merge!({:builder => Redmine::Views::LabelledFormBuilder})
    fields_for(*args, &proc)
  end

  def labelled_remote_form_for(*args, &proc)
    ActiveSupport::Deprecation.warn "ApplicationHelper#labelled_remote_form_for is deprecated and will be removed in Redmine 2.2."
    args << {} unless args.last.is_a?(Hash)
    options = args.last
    options.merge!({:builder => Redmine::Views::LabelledFormBuilder, :remote => true})
    form_for(*args, &proc)
  end

  def error_messages_for(*objects)
    html = ""
    # modified by fq
    if objects.first.is_a?(Array)
      objects = objects.first
    end
    # end
    if objects != nil
      objects = objects.map {|o| o.is_a?(String) ? instance_variable_get("@#{o}") : o}.compact
      errors = objects.map {|o| o.errors.full_messages}.flatten
      if errors.any?
        html << "<div id='errorExplanation'><ul>\n"
        errors.each do |error|
          ###by xianbo
          if(error!=l(:label_repository_path_not_null))
            html << "<li>#{h error}</li>\n"
          end
          ###xianbo
        end
        ###by xianbo
        unless params[:repository].nil?
          if params[:repository][:upassword]==""
            html << "<li>"+ l(:label_password_not_null) +"</li>\n"
          end
        end
        ###xianbo
        html << "</ul></div>\n"
      end
    end
    html.html_safe
  end

  def delete_link(url, options={})
    options = {
        :method => :delete,
        :data => {:confirm => l(:text_are_you_sure)},
        :class => 'icon icon-del'
    }.merge(options)

    link_to l(:button_delete), url, options
  end

  def delete_link_version(url, options={})
    options = {
        :method => :delete,
        :data => {:confirm => l(:text_are_you_sure)},
        :class => 'c_purple'
    }.merge(options)

    link_to l(:button_delete), url, options
  end



  def delete_new_link(url, options={})
    options = {
        :method => :delete,
        :data => {:confirm => l(:text_are_you_sure)},
        :class => "c_purple"
    }.merge(options)

    link_to l(:button_delete), url, options
  end

  def preview_link(url, form, target='preview', options={})
    content_tag 'a', l(:label_preview), {
        :href => "#",
        :onclick => %|submitPreview("#{escape_javascript url_for(url)}", "#{escape_javascript form}", "#{escape_javascript target}"); return false;|,
        :accesskey => accesskey(:preview)
    }.merge(options)
  end

  def link_to_function(name, function, html_options={})
    content_tag(:a, name, {:href => '#', :onclick => "#{function}; return false;"}.merge(:class => " c_purple"))
  end

  # Helper to render JSON in views
  def raw_json(arg)
    arg.to_json.to_s.gsub('/', '\/').html_safe
  end

  def back_url
    url = params[:back_url]
    if url.nil? && referer = request.env['HTTP_REFERER']
      url = CGI.unescape(referer.to_s)
    end
    url
  end

  def back_url_hidden_field_tag
    url = back_url
    hidden_field_tag('back_url', url, :id => nil) unless url.blank?
  end

  def check_all_links(form_name)
    link_to_function(l(:button_check_all), "checkAll('#{form_name}', true)") + "&nbsp;&nbsp;".html_safe + " | "+ "&nbsp;&nbsp;".html_safe +
        link_to_function(l(:button_uncheck_all), "checkAll('#{form_name}', false)")
  end

  def progress_bar(pcts, options={})
    pcts = [pcts, pcts] unless pcts.is_a?(Array)
    pcts = pcts.collect(&:round)
    pcts[1] = pcts[1] - pcts[0]
    pcts << (100 - pcts[1] - pcts[0])
    width = options[:width] || '100px;'
    legend = options[:legend] || ''
    content_tag('table',
                content_tag('tr',
                            (pcts[0] > 0 ? content_tag('td', '', :style => "width: #{pcts[0]}%;", :class => 'closed') : ''.html_safe) +
                                (pcts[1] > 0 ? content_tag('td', '', :style => "width: #{pcts[1]}%;", :class => 'done') : ''.html_safe) +
                                (pcts[2] > 0 ? content_tag('td', '', :style => "width: #{pcts[2]}%;", :class => 'todo') : ''.html_safe)
                ), :class => 'progress', :style => "width: #{width};").html_safe +
        content_tag('p', legend, :class => 'percent').html_safe
  end

  def checked_image(checked=true)
    if checked
      image_tag 'toggle_check.png'
    end
  end

  def context_menu(url)
    unless @context_menu_included
      content_for :header_tags do
        javascript_include_tag('context_menu') +
            stylesheet_link_tag('context_menu')
      end
      if l(:direction) == 'rtl'
        content_for :header_tags do
          stylesheet_link_tag('context_menu_rtl')
        end
      end
      @context_menu_included = true
    end
    javascript_tag "contextMenuInit('#{ url_for(url) }')"
  end

  def calendar_for(field_id,start_day=nil)
    include_calendar_headers_tags(start_day)
    javascript_tag("$(function() { $('##{field_id}').datepicker(datepickerOptions); });")
  end

  def include_calendar_headers_tags(start_day=nil)
    if start_day.nil?
      unless @calendar_headers_tags_included
        @calendar_headers_tags_included = true
        content_for :header_tags do
          start_of_week = Setting.start_of_week
          start_of_week = l(:general_first_day_of_week, :default => '1') if start_of_week.blank?
          # Redmine uses 1..7 (monday..sunday) in settings and locales
          # JQuery uses 0..6 (sunday..saturday), 7 needs to be changed to 0
          start_of_week = start_of_week.to_i % 7

          tags = javascript_tag(
              "var datepickerOptions={dateFormat: 'yy-mm-dd', firstDay: #{start_of_week}, " +
                  "showOn: 'button', buttonImageOnly: true, buttonImage: '" +
                  path_to_image('/images/public_icon.png') +
                  "', showButtonPanel: true, showWeek: true, showOtherMonths: true, selectOtherMonths: true};")
          jquery_locale = l('jquery.locale', :default => current_language.to_s)
          unless jquery_locale == 'en'
            tags << javascript_include_tag("i18n/jquery.ui.datepicker-#{jquery_locale}.js")
          end
          tags
        end
      end
    else
      unless @calendar_headers_tags_included
        @calendar_headers_tags_included = true
        content_for :header_tags do
          start_of_week = Setting.start_of_week
          start_of_week = l(:general_first_day_of_week, :default => '1') if start_of_week.blank?
          # Redmine uses 1..7 (monday..sunday) in settings and locales
          # JQuery uses 0..6 (sunday..saturday), 7 needs to be changed to 0
          start_of_week = start_of_week.to_i % 7

          tags = javascript_tag(
              "var datepickerOptions={dateFormat: 'yy-mm-dd',minDate: new Date(), firstDay: #{start_of_week}, " +
                  "showOn: 'button', buttonImageOnly: true, buttonImage: '" +
                  path_to_image('/images/public_icon.png') +
                  "', showButtonPanel: true, showWeek: true, showOtherMonths: true, selectOtherMonths: true, onClose: function(dateText, inst) {TimeClose(dateText,inst);}, beforeShow : function(input){TimeBeforeShow(input);} };")
          jquery_locale = l('jquery.locale', :default => current_language.to_s)
          unless jquery_locale == 'en'
            tags << javascript_include_tag("i18n/jquery.ui.datepicker-#{jquery_locale}.js")
          end
          tags
        end
      end
    end

  end

  # Overrides Rails' stylesheet_link_tag with themes and plugins support.
  # Examples:
  #   stylesheet_link_tag('styles') # => picks styles.css from the current theme or defaults
  #   stylesheet_link_tag('styles', :plugin => 'foo) # => picks styles.css from plugin's assets
  #
  def stylesheet_link_tag(*sources)
    options = sources.last.is_a?(Hash) ? sources.pop : {}
    plugin = options.delete(:plugin)
    sources = sources.map do |source|
      if plugin
        "/plugin_assets/#{plugin}/stylesheets/#{source}"
      elsif current_theme && current_theme.stylesheets.include?(source)
        current_theme.stylesheet_path(source)
      else
        source
      end
    end
    super sources, options
  end

  # Overrides Rails' image_tag with themes and plugins support.
  # Examples:
  #   image_tag('image.png') # => picks image.png from the current theme or defaults
  #   image_tag('image.png', :plugin => 'foo) # => picks image.png from plugin's assets
  #
  def image_tag(source, options={})
    if plugin = options.delete(:plugin)
      source = "/plugin_assets/#{plugin}/images/#{source}"
    elsif current_theme && current_theme.images.include?(source)
      source = current_theme.image_path(source)
    end
    super source, options
  end

  # Overrides Rails' javascript_include_tag with plugins support
  # Examples:
  #   javascript_include_tag('scripts') # => picks scripts.js from defaults
  #   javascript_include_tag('scripts', :plugin => 'foo) # => picks scripts.js from plugin's assets
  #
  def javascript_include_tag(*sources)
    options = sources.last.is_a?(Hash) ? sources.pop : {}
    if plugin = options.delete(:plugin)
      sources = sources.map do |source|
        if plugin
          "/plugin_assets/#{plugin}/javascripts/#{source}"
        else
          source
        end
      end
    end
    super sources, options
  end

  def content_for(name, content = nil, &block)
    @has_content ||= {}
    @has_content[name] = true
    super(name, content, &block)
  end

  def has_content?(name)
    (@has_content && @has_content[name]) || false
  end

  def sidebar_content?
    has_content?(:sidebar) || view_layouts_base_sidebar_hook_response.present?
  end

  def view_layouts_base_sidebar_hook_response
    @view_layouts_base_sidebar_hook_response ||= call_hook(:view_layouts_base_sidebar)
  end

  def email_delivery_enabled?
    !!ActionMailer::Base.perform_deliveries
  end

  # Returns the avatar image tag for the given +user+ if avatars are enabled
  # +user+ can be a User or a string that will be scanned for an email address (eg. 'joe <joe@foo.bar>')
  def avatar(user, options = { })
    if Setting.gravatar_enabled?
      options.merge!({:ssl => (request && request.ssl?), :default => Setting.gravatar_default})
      email = nil
      if user.respond_to?(:mail)
        email = user.mail
      elsif user.to_s =~ %r{<(.+?)>}
        email = $1
      end
      return gravatar(email.to_s.downcase, options) unless email.blank? rescue nil
      #options ={"class"  => ["avatar2"],"width" =>["80px"],"height" =>["80px"]}
      #return image_tag url_to_avatar(user), options
    else
      ''
    end
  end

  def sanitize_anchor_name(anchor)
    if ''.respond_to?(:encoding) || RUBY_PLATFORM == 'java'
      anchor.gsub(%r{[^\s\-\p{Word}]}, '').gsub(%r{\s+(\-+\s*)?}, '-')
    else
      # TODO: remove when ruby1.8 is no longer supported
      anchor.gsub(%r{[^\w\s\-]}, '').gsub(%r{\s+(\-+\s*)?}, '-')
    end
  end

  # Returns the javascript tags that are included in the html layout head
  def javascript_heads
    tags = javascript_include_tag('jquery-1.8.3-ui-1.9.2-ujs-2.0.3', 'application', 'jquery.colorbox-min')
    unless User.current.pref.warn_on_leaving_unsaved == '0'
      tags << "\n".html_safe + javascript_tag("$(window).load(function(){ warnLeavingUnsaved('#{escape_javascript l(:text_warn_on_leaving_unsaved)}'); });")
    end
    tags
  end

  def hubspot_head
    tags = javascript_include_tag('hubspot/messenger.min', 'hubspot/messenger-theme-future')
    tags << stylesheet_link_tag('hubspot/messenger', 'hubspot/messenger-theme-future', 'hubspot/messenger-theme-flat')
  end

  def bootstrap_head
    tags = stylesheet_link_tag('bootstrap/bootstrap.min', 'bootstrap/bootstrap-theme.min')
    tags << javascript_include_tag('bootstrap/affix')
    tags << javascript_include_tag('bootstrap/alert')
    tags << javascript_include_tag('bootstrap/button')
    tags << javascript_include_tag('bootstrap/carousel')
    tags << javascript_include_tag('bootstrap/collapse')
    tags << javascript_include_tag('bootstrap/dropdown')
    tags << javascript_include_tag('bootstrap/modal')
    tags << javascript_include_tag('bootstrap/popover')
    tags << javascript_include_tag('bootstrap/scrollspy')
    tags << javascript_include_tag('bootstrap/tab')
    tags << javascript_include_tag('bootstrap/tooltip')
    tags << javascript_include_tag('bootstrap/transition')
    tags
  end

  def favicon
    "<link rel='shortcut icon' href='#{image_path('/favicon.ico')}' />".html_safe
  end

  def robot_exclusion_tag
    '<meta name="robots" content="noindex,follow,noarchive" />'.html_safe
  end

  # Returns true if arg is expected in the API response
  def include_in_api_response?(arg)
    unless @included_in_api_response
      param = params[:include]
      @included_in_api_response = param.is_a?(Array) ? param.collect(&:to_s) : param.to_s.split(',')
      @included_in_api_response.collect!(&:strip)
    end
    @included_in_api_response.include?(arg.to_s)
  end

  # Returns options or nil if nometa param or X-Redmine-Nometa header
  # was set in the request
  def api_meta(options)
    if params[:nometa].present? || request.headers['X-Redmine-Nometa']
      # compatibility mode for activeresource clients that raise
      # an error when unserializing an array with attributes
      nil
    else
      options
    end
  end

  # Add by Tao
  def url_to_avatar(source)
    source = nil if source.kind_of?(String)
    get_avatar(source)
  end
  # Endof Tao's code

  def date_format_local(time)
    date = time.strftime("%Y年%m月%d日")
  end

  #当TAG数量过多时，更多链接
  #1代表是user类型   2代表是project类型  3代表是issue类型   4代表需求 9代表课程
  def more_tags id,object_flag
    a= 1
    case object_flag
      when "1"
        s = link_to l(:label_more_tags),:controller => "users", :action => "show", :id => id
      when "2"
        s = link_to l(:label_more_tags),:controller => "projects", :action => "show", :id => id
      when "3"
        s = link_to l(:label_more_tags),:controller => "issues", :action => "show", :id => id
      when "4"
        s = link_to l(:label_more_tags),:controller => "bids", :action => "show", :id => id
      when "9"
        s = link_to l(:label_more_tags),:controller => "courses", :action => "show", :id => id
    end
    s
  end

  def get_user_identity identity
    s = ""
    case identity
      when 0
        s = '教师'
      when 1
        s = '学生'
      when 2
        s = '组织'
      when 3
        s= '开发者'
      else
        s = '学生'
    end
    s
  end

  def get_memo
    @new_memo = Memo.new
    @public_forum = Forum.find(1) rescue ActiveRecord::RecordNotFound
  end

  #获取用户未过期的课程
  def get_user_course user
    courses_doing = []
    user.courses.select("courses.*,(SELECT MAX(created_at)  FROM `course_activities` WHERE course_activities.course_id = courses.id) AS a").order("a desc").each do |course|
      if !course_endTime_timeout?(course)
        courses_doing.push course
      end
    end
    courses_doing
  end


  def attachment_candown attachment
    candown = false
    if attachment.container
      if attachment.container.class.to_s=="PhoneAppVersion"
        candown = true
      elsif attachment.container.class.to_s != "HomeworkAttach" && attachment.container.class.to_s != "StudentWork" && (attachment.container.has_attribute?(:project) || attachment.container.has_attribute?(:project_id)) && attachment.container.project
        project = attachment.container.project
        candown= User.current.member_of?(project) || (project.is_public && attachment.is_public == 1)
      elsif attachment.container.is_a?(Project)
        project = attachment.container
        candown= User.current.member_of?(project) || (project.is_public && attachment.is_public == 1)
      elsif (attachment.container.has_attribute?(:board) || attachment.container.has_attribute?(:board_id)) && attachment.container.board &&
          attachment.container.board.project
        project = attachment.container.board.project
        candown = User.current.member_of?(project) || (project.is_public && attachment.is_public == 1)
      elsif (attachment.container.has_attribute?(:course) ||attachment.container.has_attribute?(:course_id) ) && attachment.container.course
        course = attachment.container.course
        candown = User.current.member_of_course?(course) || (course.is_public==1 && attachment.is_public == 1)
      elsif attachment.container.is_a?(Course)
        course = attachment.container
        candown= User.current.member_of_course?(course) || (course.is_public==1 && attachment.is_public == 1)
      elsif (attachment.container.has_attribute?(:board) || attachment.container.has_attribute?(:board_id)) && attachment.container.board &&
          attachment.container.board.course
        course = attachment.container.board.course
        candown= User.current.member_of_course?(course) || (course.is_public==1 && attachment.is_public == 1)
      elsif attachment.container.class.to_s=="HomeworkAttach"
        candown = true
      elsif attachment.container.class.to_s=="StudentWorksScore"
        candown = true
      elsif attachment.container.class.to_s=="StudentWork"
        candown = true
      elsif attachment.container.class.to_s == "User"
        candown = (attachment.is_public == 1 || attachment.is_public == true || attachment.author_id == User.current.id)
      elsif  attachment.container_type == "Bid" && attachment.container && attachment.container.courses
        course = attachment.container.courses.first
        candown = User.current.member_of_course?(attachment.container.courses.first) || (course.is_public == 1 && attachment.is_public == 1)
      else
        candown = (attachment.is_public == 1 || attachment.is_public == true)
      end
    end
    candown
  end

  def project_type_link(text, value)
    if value == 1
      link_to "<span class='pr_kafa'></span>#{text}".html_safe,"javascript:void(0)" ,:onClick => "show_window();", :class => "pr_join_a",:id => "setting_project_type"
    elsif value == 2
      link_to "<span class='pr_keyan'></span>#{text}".html_safe,"javascript:void(0)" ,:onClick => "show_window();", :class => "pr_join_a",:id => "setting_project_type"
    else
      link_to "<span class='pr_friend'></span>#{text}".html_safe,"javascript:void(0)" ,:onClick => "show_window();", :class => "pr_join_a",:id => "setting_project_type"
    end

  end

  private

  def wiki_helper
    helper = Redmine::WikiFormatting.helper_for(Setting.text_formatting)
    extend helper
    return self
  end

  def link_to_content_update(text, url_params = {}, html_options = {})
    link_to(text, url_params, html_options)
  end

#added by nie
# Display watcher picture
  def show_more_watchers?(obj)
    if User.watched_by(obj.id).count > 6
      return true
    else
      return false
    end
  end

  def show_watcher_profile(obj)
    count = 0
    html = ''
    if User.watched_by(obj.id).count == 0
      html << (content_tag "span", l(:label_no_current_watchers))
    end
    for user in User.watched_by(obj.id)
      html << (link_to image_tag(url_to_avatar(user), :class => "avatar"), user_path(user), :class => "avatar", :title => "#{user.name}")
      count = count + 1
      if count >= 12
        break
      end
    end
    html.html_safe
  end

#display bid project
  def show_more_bid_project?(bid)
    if bid.projects.where('is_public = 1').count > 12
      return true
    else
      return false
    end
  end

  def show_bid_project(bid)
    html = ''
    if bid.projects.where('is_public = 1').count == 0
      html << (content_tag "p", l(:label_no_bid_project), :class => "font_lighter")
    else
      bid.projects.where('is_public = 1').take(12).each do |project|
        html << (link_to image_tag(url_to_avatar(project), :class => "avatar", :title => project.name), project_path(project), :class => "avatar")
      end
    end
    html.html_safe
  end

  def show_bid_fans_picture(obj)
    html = ''
    if obj.watcher_users.count == 0
      html << (content_tag "span", l(:label_project_no_follow))
    else
      obj.watcher_users.take(12).each do |user|
        html << (link_to image_tag(url_to_avatar(user), :class => "avatar"), user_path(user), :class => "avatar", :title => user.name)
      end
    end
    html.html_safe
  end

#display contest project
  def show_more_contest_project?(contest)
    if contest.projects.where('is_public = 1').count > 12
      return true
    else
      return false
    end
  end

  def show_more_contest_softapplication?(contest)
    if contest.softapplications.where('is_public = 1').count > 12
      return true
    else
      return false
    end
  end

  def show_contest_project(bid)
    html = ''
    if contest.projects.where('is_public = 1').count == 0
      html << (content_tag "p", l(:label_no_bid_project), :class => "font_lighter")
    else
      contest.projects.where('is_public = 1').take(12).each do |project|
        html << (link_to image_tag(url_to_avatar(project), :class => "avatar", :title => project.name), project_path(project), :class => "avatar")
      end
    end
    html.html_safe
  end

  def show_contest_project(contest)
    html = ''
    if contest.projects.where('is_public = 1').count == 0
      html << (content_tag "p", l(:label_no_bid_project), :class => "font_lighter")
    else
      contest.projects.where('is_public = 1').take(12).each do |project|
        html << (link_to image_tag(url_to_avatar(project), :class => "avatar", :title => project.name), project_path(project), :class => "avatar")
      end
    end
    html.html_safe
  end

  def show_contest_softapplication(contest)
    html = ''
    if contest.softapplications.where('is_public = 1').count == 0
      html << (content_tag "p", l(:label_no_contest_softapplication), :class => "font_lighter")
    else
      contest.softapplications.where('is_public = 1').take(12).each do |softapplication|
        html << (link_to image_tag(url_to_avatar(project), :class => "avatar", :title => project.name), project_path(project), :class => "avatar")
      end
    end
    html.html_safe
  end

  def show_contest_fans_picture(obj)
    html = ''
    if obj.watcher_users.count == 0
      html << (content_tag "span", l(:label_project_no_follow))
    else
      obj.watcher_users.take(12).each do |user|
        html << (link_to image_tag(url_to_avatar(user), :class => "avatar"), user_path(user), :class => "avatar", :title => user.name)
      end
    end
    html.html_safe
  end

#display fans picture
  def show_more_fans?(obj)
    if obj.watcher_users.count > 12
      return true
    else
      return false
    end
  end

  def show_fans_picture(obj)
    html = ''
    if obj.watcher_users.count == 0
      html << (content_tag "span", l(:label_no_current_fans))
    else
      obj.watcher_users.take(12).each do |user|
        html << (link_to image_tag(url_to_avatar(user), :class => "avatar"), user_path(user), :class => "avatar", :title => user.name)
      end
    end
    html.html_safe
  end

  # added by bai
  def show_more_participate?(obj)
    if obj.join_in_contests.count > 12
      return true
    else
      return false
    end
  end

  def show_participate_picture(obj)
    html = ''
    count = 0
    if obj.join_in_contests.count == 0
      html << (content_tag "span", l(:label_no_current_participate))
    end
    for temp in obj.join_in_contests
      html << (link_to image_tag(url_to_avatar(temp.user), :class => "avatar"), user_path(temp.user), :class => "avatar", :title => "#{temp.user.name}")
      count = count + 1
      if count >= 12
        break
      end
    end
    html.html_safe
  end

#end

# add by huang
  def show_watcher_list(user)
    html = ''
    count = 0
    for user in User.watched_by(user.id)
      html << (link_to image_tag(url_to_avatar(user), :class => "avatar"), user_path(user), :class => "avatar", :title => "#{user.name}")
      count = count + 1
      if count >= 12
        break
      end
    end
    html.html_safe
  end
# end

#added by william
  def get_fans_num(user)
    user.watcher_users.count
  end
#end


  def hadcommittedhomework(cur,curb)
    bid = Bid.find_by_id(curb)
    return true if bid.nil?

    case bid.homework_type
      when Bid::HomeworkFile
        attaches = HomeworkAttach.where(bid_id: curb)
        attaches.map(&:user_id).include? cur
      when Bid::HomeworkProject
        attaches = BidingProject.where(user_id: User.current, bid_id: bid)
        attaches.count > 0 # > 0 则有提交记录
      else
        true
    end

  end

  def render_dynamic_nav
    home_link = link_to l(:field_homepage), {:controller => 'welcome', :action => 'index'}
    home_link = "<li class = 'topnav_a fl'>" << home_link <<  "</li>"
    # bootstrap_render_dynamic_nav
    content_tag :ul, (home_link.html_safe+bootstrap_render_dynamic_nav)
  end

  def bootstrap_render_dynamic_nav
    hidden_non_project = Setting.find_by_name("hidden_non_project")
    visiable = !(hidden_non_project && hidden_non_project.value == "0")

    main_course_link = link_to l(:label_course_practice), {:controller => 'welcome', :action => 'index', :host => Setting.host_course}
    main_project_link = link_to l(:label_project_deposit), {:controller => 'welcome', :action => 'index', :host => Setting.host_name}
    main_contest_link = link_to l(:label_contest_innovate), {:controller => 'welcome', :action => 'index', :host => Setting.host_contest}

    # course_all_course_link = link_to l(:label_course_all), {:controller => 'courses', :action => 'index'}
    course_teacher_all_link = link_to l(:label_teacher_all), {:controller => 'users', :action => 'index', :role => 'teacher', :host => Setting.host_course}
    # courses_link = link_to l(:label_course_practice), {:controller => 'courses', :action => 'index'}
    #users_link = link_to l(:label_software_user), {:controller => 'users', :action => 'index', :host => Setting.host_user}
    # contest_link = link_to l(:label_contest_innovate), {:controller => 'contests', :action => 'index'}
    # bids_link = link_to l(:label_requirement_enterprise), {:controller => 'bids', :action => 'index'}
    forum_link = link_to l(:label_forum_all), {:controller => "forums", :action => "index"}
    stores_link = link_to l(:label_stores_index), {:controller => 'stores', :action=> 'index'}
    school_all_school_link = link_to l(:label_school_all), {:controller => 'school', :action => 'index'}
    project_new_link = link_to l(:label_project_new), {:controller => 'projects', :action => 'new', :host => Setting.host_name}
    # project_mine_link = link_to l(:label_my_project), {:controller => 'users', :action => 'user_projects', :host => Setting.host_name}

    #@nav_dispaly_project_label
    nav_list = Array.new
    nav_list.push(school_all_school_link) if @nav_dispaly_course_all_label && @show_course == 1 && visiable
    # nav_list.push(course_all_course_link) if @nav_dispaly_course_all_label && @show_course == 1
    nav_list.push(course_teacher_all_link) if @nav_dispaly_teacher_all_label && @show_course == 1 && visiable

    nav_list.push(main_project_link) if @nav_dispaly_main_project_label
    nav_list.push(main_course_link) if @nav_dispaly_main_course_label && @show_course == 1 && visiable
    nav_list.push(main_contest_link) if @nav_dispaly_main_contest_label && @show_contest == 1 && visiable

    nav_list.push(courses_link) if @nav_dispaly_course_label && @show_course == 1 && visiable
    nav_list.push(project_new_link) if @nav_dispaly_project_label
    # nav_list.push(project_mine_link) if @nav_dispaly_main_project_label
    # nav_list.push(projects_link) if @nav_dispaly_project_label
    #nav_list.push(users_link) if @nav_dispaly_user_label
    # nav_list.push(contest_link) if @nav_dispaly_contest_label  && @show_contest == 1
    nav_list.push(bids_link) if @nav_dispaly_bid_label && visiable
    nav_list.push(forum_link) if @nav_dispaly_forum_label && visiable
    nav_list.push(stores_link) if @nav_dispaly_store_all_label && visiable

    content_li = ''
    nav_list.collect do |nav_item|
      content_li << content_tag(:li, nav_item, :class => 'topnav_a fl')
    end
    content_li.html_safe
  end

  def current_user
    User.current
  end

  # def hadcommittedforcontest(curu)
  # message = JournalsForMessage.find_by_sql("select * from journals_for_messages where jour_type = 'Softapplication' ")
  # message.each do |createmessage|
  # if createmessage.user_id == curu
  # return true
  # end
  # end
  # end

  def footer_logo(ul_class=nil, li_class=nil)
    logos = []
    logos.push(link_to image_tag('/images/footer_logo/nudt.png',:alt=>"nudt"),"http://www.nudt.edu.cn/special.asp?classid=12" )
    logos.push(link_to image_tag('/images/footer_logo/peking_eecs.png', :alt=>"peking_eecs"), "http://eecs.pku.edu.cn" )
    logos.push(link_to image_tag('/images/footer_logo/buaa_scse.png', :alt=>"buaa_scse"), "http://scse.buaa.edu.cn/" )
    logos.push(link_to image_tag('/images/footer_logo/iscas.png', :alt=>"iscas"), "http://www.iscas.ac.cn" )
    logos.push(link_to image_tag('/images/footer_logo/inforbus.png', :alt=>"inforbus"), "http://www.inforbus.com" )

    logos.collect! { |logo|
      content_tag(:li, logo.html_safe, :class => li_class.to_s)
    }

    content_tag(:ul, logos.join("").html_safe, :class => ul_class.to_s).html_safe
  end

  def sort_homework_path(bid, sort, direction)
    case self.action_name
      when 'show_courseEx'
        get_not_batch_homework_homework_attach_index_path(bid_id: bid.id, sort: sort, direction: 'asc')
      when 'get_not_batch_homework'
        get_not_batch_homework_homework_attach_index_path(bid_id: bid.id, sort: sort, direction: direction)
      when 'get_batch_homeworks'
        get_batch_homeworks_homework_attach_index_path(bid_id: bid.id, sort: sort, direction: direction)
      when 'get_homeworks'
        get_homeworks_homework_attach_index_path(bid_id: bid.id, sort: sort, direction: direction)
      else
        '#'
    end
  end

  def anonymous_comment_link(bid, course)
    link = case bid.comment_status
    when 0
      confirm_info = "开启匿评后学生将不能对作品进行提交、修改、删除等操作\n"
      confirm_info += anonymous_comment_notice(bid,course)
      confirm_info += '是否确定开启匿评？'
      link_to '启动匿评', start_anonymous_comment_bid_path(bid), id: "#{bid.id}_start_anonymous_comment", remote: true, :confirm => confirm_info, disable_with: '加载中...'
    when 1
      confirm_info = "关闭匿评后所有同学将不能继续进行匿评，且将公开已提交作品列表\n"
      confirm_info += anonymous_comment_notice(bid,course)
      confirm_info += '是否确定关闭匿评？'
      link_to '关闭匿评', stop_anonymous_comment_bid_path(bid), id: "#{bid.id}_stop_anonymous_comment", remote: true, :confirm => confirm_info
    when 2
      '匿评结束'
    end
    content_tag('span', link, id: "#{bid.id}_anonymous_comment")
  end

  def anonymous_comment_notice(bid, course)
     case bid.comment_status
     when 0
       @student_size  ||= searchStudent(course).size
       @homework_size = bid.homeworks.size
       percent = @homework_size.to_f / (@student_size == 0 ? 1 : @student_size)
       confirm_info = "目前#{@student_size}个学生,总共提交了#{@homework_size}份作品,占#{number_to_percentage(percent * 100, precision: 1)}\n"
     when 1
       @homework_evaluations = 0
       bid.homeworks.map { |homework| @homework_evaluations += homework.homework_evaluations.count}
       teachers = "("
       teacher_members = searchTeacherAndAssistant(course)
       teacher_members.each do |member|
         if member == teacher_members.last
           teachers += member.user_id.to_s + ")"
         else
           teachers += member.user_id.to_s + ","
         end
       end
       @has_evaluations = 0
       bid.homeworks.map { |homework| @has_evaluations += homework.rates(:quality).where("seems_rateable_rates.rater_id not in #{teachers}").count}

       percent = @has_evaluations.to_f / (@homework_evaluations == 0 ? 1 : @homework_evaluations)
       confirm_info = "目前总共分配了#{@homework_evaluations}份匿评作品,已评价#{@has_evaluations}份作品,占#{number_to_percentage(percent * 100, precision: 1)}\n"
     end
     confirm_info
  end

  def get_technical_title user
    if user.user_extensions.technical_title == "Professor" || user.user_extensions.technical_title == "教授"
      technical_title = l(:label_technicl_title_professor)
    elsif user.user_extensions.technical_title == "Associate professor" || user.user_extensions.technical_title == "副教授"
      technical_title = l(:label_technicl_title_associate_professor)
    elsif user.user_extensions.technical_title == "Lecturer" || user.user_extensions.technical_title == "讲师"
      technical_title = l(:label_technicl_title_lecturer)
    elsif user.user_extensions.technical_title == "Teaching assistant" || user.user_extensions.technical_title == "助教"
      technical_title = l(:label_technicl_title_teaching_assistant)
    end
    technical_title
  end

  def get_user_roll user
    technical_title = ""
    case user.user_extensions.identity.to_s
      when "0"
        technical_title =  get_technical_title user
      when "1"
        technical_title =  l(:label_account_identity_student)
      when "2"
        technical_title =  l(:label_account_identity_enterprise)
      when "3"
        technical_title =  l(:label_account_identity_developer)
    end
    technical_title
  end


  def ie8?
    request.env["HTTP_USER_AGENT"] =~ /MSIE 8.0/
  end


  #获取指定资源列表的TAG的集合以及每个TAG的数量，降序排序
  def attachment_tag_list attachments
    tag_list = Hash.new
    attachments.each do |attachment|
      attachment.tag_list.map{|tag| tag_list.has_key?(tag) ? tag_list[tag] = tag_list[tag] + 1 : tag_list[tag] = 1}
    end
    tag_list.sort {|a,b| b[1]<=>a[1]}
  end

  #获取课程资源的TAG云
  def get_course_tag_list course
    all_attachments = course.attachments.select{|attachment| attachment.is_public? ||
        (attachment.container_type == "Course" && User.current.member_of_course?(course))||
        attachment.author_id == User.current.id
    }
    tag_list = attachment_tag_list all_attachments
    tag_list
  end

  #获取匿评相关连接代码
  def homework_anonymous_comment (homework, is_in_course, user_activity_id = -1, course_activity = -1)
    if Time.parse(homework.end_time.to_s).strftime("%Y-%m-%d") >= Time.now.strftime("%Y-%m-%d")
      link = link_to "启动匿评","javascript:void(0)", :class => "postOptionLink", :title => "作业截止日期之前不可以启动匿评"
    elsif homework.student_works.count >= 2 && homework.homework_detail_manual#作业份数大于2
      case homework.homework_detail_manual.comment_status
      when 1
        link = link_to '启动匿评',  alert_anonymous_comment_homework_common_path(homework,:is_in_course=>is_in_course,:user_activity_id=>user_activity_id,:course_activity=>course_activity), id: "#{homework.id}_start_anonymous_comment", remote: true, disable_with: '加载中...',:class => 'postOptionLink'
      when 2
        link = link_to '关闭匿评', alert_anonymous_comment_homework_common_path(homework,:is_in_course=>is_in_course,:user_activity_id=>user_activity_id,:course_activity=>course_activity), id: "#{homework.id}_stop_anonymous_comment", remote: true,:class => 'postOptionLink'
      when 3
        # link = link_to "匿评结束","javascript:void(0)", :class => "postOptionLink", :title => "匿评结束"
      end
    else
      link = link_to "启动匿评","javascript:void(0)", :class => "postOptionLink", :title => "学生提交作业数大于等于2时才可以启动匿评"
    end
    link
  end
  #学生根据传入作业确定显示为编辑作品还是新建作品
  def student_new_homework homework
    work = cur_user_works_for_homework homework
    if work.nil?
      link_to "提交作品",  new_student_work_path(:homework => homework.id),:class => 'fr mr10 work_edit'
    else
      if homework.homework_type == 1 && homework.homework_detail_manual && homework.homework_detail_manual.comment_status != 1 #匿评作业，且作业状态不是在开启匿评之前
        link_to "作品已交",  "javascript:void(0);", :class => 'fr mr10 pr_join_span c_white', :title => "开启匿评后不可修改作品"
      elsif homework.homework_type == 2 #编程作业修改作品
        if homework.homework_detail_manual && homework.homework_detail_manual.comment_status != 1
          link_to "作品已交",  "javascript:void(0);", :class => 'fr mr10 pr_join_span c_white', :title => "开启匿评后不可修改作品"
        else
          link_to "修改作品",  new_student_work_path(:homework => homework.id),:class => 'fr mr10 work_edit'
        end
      else
        link_to "修改作品",  edit_student_work_path(work.id),:class => 'fr mr10 work_edit'
      end
    end
  end
  #动态列表中，确定学生是该提交还是进列表
  def student_work_activity_submit_status(opt={})
    default_opt = {class: 'c_blue'}.merge(opt)

    is_teacher = User.current.user_extensions && User.current.user_extensions.identity == 0 && User.current.allowed_to?(:add_course, nil, :global => true)

    homework = default_opt[:homework]
    work = cur_user_works_for_homework homework
    if work.nil? && !is_teacher
      link_to "提交("+homework.student_works.count.to_s+")", new_student_work_path(:homework => homework.id,:host=> Setting.host_course), :class=> default_opt[:class]
    else
      link_to "提交("+homework.student_works.count.to_s+")", student_work_index_path(:homework => homework.id,:host=> Setting.host_course), :class=> default_opt[:class]
    end
  end

  #根据传入作业确定显示为编辑作品还是新建作品,或者显示作品数量
  def user_for_homework_common homework,is_teacher
    if User.current.member_of_course?(homework.course)
      if is_teacher #老师显示作品数量
        link_to "作品(#{homework.student_works.count})",student_work_index_path(:homework => homework.id),:class => "c_blue"
      else #学生显示提交作品、修改作品等按钮
        work = cur_user_works_for_homework homework
        if work.nil? && Time.parse(homework.end_time.to_s).strftime("%Y-%m-%d") >= Time.now.strftime("%Y-%m-%d")
          link_to "提交作品(#{homework.student_works.count})",  new_student_work_path(:homework => homework.id),:class => 'c_blue'
        elsif work.nil? && Time.parse(homework.end_time.to_s).strftime("%Y-%m-%d") < Time.now.strftime("%Y-%m-%d")
          link_to "补交作品(#{homework.student_works.count})",  new_student_work_path(:homework => homework.id),:class => 'c_red'
        else
          if homework.homework_detail_manual && homework.homework_detail_manual.comment_status == 2 #匿评作业，且作业状态不是在开启匿评之前
            link_to "作品匿评", student_work_index_path(:homework => homework.id), :class => 'c_blue', :title => "开启匿评后不可修改作品"
          elsif homework.homework_detail_manual && homework.homework_detail_manual.comment_status == 3
            link_to "匿评结束", student_work_index_path(:homework => homework.id), :class => 'c_blue', :title => "匿评已结束"
          elsif homework.homework_type == 2 && Time.parse(homework.end_time.to_s).strftime("%Y-%m-%d") >= Time.now.strftime("%Y-%m-%d")#编程作业不能修改作品
            link_to "修改作品(#{homework.student_works.count})", new_student_work_path(:homework => homework.id),:class => 'c_blue'
          elsif Time.parse(homework.end_time.to_s).strftime("%Y-%m-%d") >= Time.now.strftime("%Y-%m-%d")
            link_to "修改作品(#{homework.student_works.count})", edit_student_work_path(work.id),:class => 'c_blue'
          else
            link_to "查看作品(#{homework.student_works.count})", student_work_index_path(:homework => homework.id), :class => 'c_blue', :title => "作业截止后不可修改作品"
          end
        end
      end
    else
      link_to "作品(#{homework.student_works.count})",student_work_index_path(:homework => homework.id),:class => "c_blue"
    end

  end

  def student_anonymous_comment homework
    if  homework.homework_detail_manual
      case homework.homework_detail_manual.comment_status
        when 1
          "<span class='fr mr10 pr_join_span '>未开启匿评</span>".html_safe
        when 2
          "<span class='fr mr10 pr_join_span '>正在匿评中</span>".html_safe
        when 3
          "<span class='fr mr10 pr_join_span '>匿评已结束</span>".html_safe
      end
    end
  end

  #获取当前用户在指定作业下提交的作业的集合
  def cur_user_works_for_homework homework
    homework.student_works.where("user_id = ?",User.current).first
  end

  def file_preview_tag(file, html_options={})
    if %w(pdf pptx doc docx xls xlsx).any?{|x| file.filename.downcase.end_with?(x)}
      link_to '预览', download_named_attachment_path(file.id, file.filename, preview: true),html_options
    end
  end

  #将文本内的/n转换为<br>
  def text_format text
    text.gsub("&","&amp;").gsub("<","&lt;").gsub(">","&gt;").gsub("\n","<br/>").html_safe
  end

  #评分规则显示
  def scoring_rules late_penalty,homework_id,is_teacher,absence_penalty=nil
    if absence_penalty
      if late_penalty.to_i == 0 && absence_penalty.to_i == 0
        notice = "尚未设置评分规则"
        if is_teacher
          notice += "，请&nbsp" + link_to("设置",edit_homework_common_path(homework_id),:class => "c_green")
        end
      elsif late_penalty.to_i != 0 && absence_penalty.to_i == 0
        notice = "迟交扣#{late_penalty}分，缺评扣分未设置"
      elsif late_penalty.to_i == 0 && absence_penalty.to_i != 0
        notice = "迟交扣分未设置，缺评一个作品扣#{absence_penalty}分"
      elsif late_penalty.to_i != 0 && absence_penalty.to_i != 0
        notice = "迟交扣#{late_penalty}分，缺评一个作品扣#{absence_penalty}分"
      end
    else
      if late_penalty.to_i == 0
        notice = "尚未设置评分规则"
        if is_teacher
          notice += "，请&nbsp" + link_to("设置",edit_homework_common_path(homework_id),:class => "c_green")
        end
      else
        notice = "迟交扣#{late_penalty}分"
      end
    end
    notice.html_safe
  end

  #老师C语言的标准代码
  def c_stantard_code_teacher
    "// 老师您好！这是一个C语言的样例程序
// 程序功能：输入两个整数，输出两者之和
// 测试集合：老师可以给出多组测试集，例如：
//                 输入1和2，输出3
//                 输入3和4，输出7
//                 ... ...
//                 系统将根据您给出的测试集对学生代码进行自动评分

// 特别提醒：程序采用命令行传参方式，输入通过argv传入
//                 否则您的作业标准代码将不能通过测试

#include <stdio.h> //引用必须头文件
int main(int argc, char** argv) {
    int a = atoi(argv[1]);  //将第一个输入转成整型
    int b = atoi(argv[2]);  //将第二个输入转换为整型

    printf(\"%d\",a+b);      //输出a+b
    return 0;
}".html_safe
  end

  #老师C++语言的标准代码
  def c_stantard_code_teacher_
    "// 老师您好！这是一个C++语言的样例程序
// 程序功能：输入两个整数，输出两者之和
// 测试集合：老师可以给出多组测试集，例如：
//                 输入1和2，输出3
//                 输入3和4，输出7
//                 ... ...
//                 系统将根据您给出的测试集对学生代码进行自动评分

// 特别提醒：程序采用命令行传参方式，输入通过argv传入
//                 否则您的作业标准代码将不能通过测试

#include <iostream> //引用必须头文件
#include <cstdlib>
using namespace std;
int main(int argc, char** argv){
  int a = atoi(argv[1]); //将第一个输入转成整型
  int b = atoi(argv[2]); //将第二个输入转换为整型
  cout<<a+b;   //输出a+b
  return 0;
}".html_safe
  end

  #学生C语言的标准代码
  def c_stantard_code_student
    "// 同学好！这是一个C语言的样例程序
// 程序功能：输入两个整数，输出两者之和
// 测试集合：老师可以给出多组测试集，例如：
//                 输入1和2，输出3
//                 输入3和4，输出7
//                 ... ...
//                 系统将根据您给出的测试集对学生代码进行自动评分

// 特别提醒：程序采用命令行传参方式，输入通过argv传入
//                 否则您的作业标准代码将不能通过测试

#include <stdio.h> //引用必须头文件
int main(int argc, char** argv) {
    int a = atoi(argv[1]);  //将第一个输入转成整型
    int b = atoi(argv[2]);  //将第二个输入转换为整型

    printf(\"%d\",a+b);      //输出a+b
    return 0;
}".html_safe
  end

  #学生C++语言的标准代码
  def c_stantard_code_student_
    "// 同学好！这是一个C++语言的样例程序
// 程序功能：输入两个整数，输出两者之和
// 测试集合：老师可以给出多组测试集，例如：
//                 输入1和2，输出3
//                 输入3和4，输出7
//                 ... ...
//                 系统将根据您给出的测试集对学生代码进行自动评分

// 特别提醒：程序采用命令行传参方式，输入通过argv传入
//                 否则您的作业标准代码将不能通过测试

#include <iostream> //引用必须头文件
#include <cstdlib>
using namespace std;
int main(int argc, char** argv){
  int a = atoi(argv[1]); //将第一个输入转成整型
  int b = atoi(argv[2]); //将第二个输入转换为整型
  cout<<a+b;   //输出a+b
  return 0;
}".html_safe
  end

  #判断用户是否已经提交了问卷
  def has_commit_poll?(poll_id,user_id)
    pu = PollUser.find_by_poll_id_and_user_id(poll_id,user_id)
    if pu.nil?
      false
    else
      true
    end
  end
end