comparison app/helpers/application_helper.rb @ 0:513646585e45

* Import Redmine trunk SVN rev 3859

+# redMine - project management software
+# Copyright (C) 2006-2007  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
+
+  extend Forwardable
+  def_delegators :wiki_helper, :wikitoolbar_for, :heads_for_wiki_formatter
+
+  # 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
+
+  # Display a link if user is authorized
+  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
+
+  # Display a link to remote if user is authorized
+  def link_to_remote_if_authorized(name, options = {}, html_options = nil)
+    url = options[:url] || {}
+    link_to_remote(name, options, html_options) if authorize_for(url[:controller] || params[:controller], url[:action])
+  end
+
+  # Displays a link to user's account page if active
+  def link_to_user(user, options={})
+    if user.is_a?(User)
+      name = h(user.name(options[:format]))
+      if user.active?
+        link_to name, :controller => 'users', :action => 'show', :id => user
+      else
+        name
+      end
+    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
+  #
+  def link_to_issue(issue, options={})
+    title = nil
+    subject = nil
+    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 "#{issue.tracker} ##{issue.id}", {:controller => "issues", :action => "show", :id => issue}, 
+                                                 :class => issue.css_classes,
+                                                 :title => title
+    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_attachment(attachment, options={})
+    text = options.delete(:text) || attachment.filename
+    action = options.delete(:download) ? 'download' : 'show'
+
+    link_to(h(text), {:controller => 'attachments', :action => action, :id => attachment, :filename => attachment.filename }, options)
+  end
+
+  # Generates a link to a SCM revision
+  # Options:
+  # * :text - Link text (default to the formatted revision)
+  def link_to_revision(revision, project, options={})
+    text = options.delete(:text) || format_revision(revision)
+
+    link_to(text, {:controller => 'repositories', :action => 'revision', :id => project, :rev => revision}, :title => l(:label_revision_id, revision))
+  end
+
+  def toggle_link(name, id, options={})
+    onclick = "Element.toggle('#{id}'); "
+    onclick << (options[:focus] ? "Form.Element.focus('#{options[:focus]}'); " : "this.blur(); ")
+    onclick << "return false;"
+    link_to(name, "#", :onclick => onclick)
+  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 prompt_to_remote(name, text, param, url, html_options = {})
+    html_options[:onclick] = "promptToRemote('#{text}', '#{param}', '#{url_for(url)}'); return false;"
+    link_to name, {}, html_options
+  end
+  
+  def format_activity_title(text)
+    h(truncate_single_line(text, :length => 100))
+  end
+  
+  def format_activity_day(date)
+    date == Date.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 />")
+  end
+
+  def format_version_name(version)
+    if version.project == @project
+    	h(version)
+    else
+      h("#{version.project} - #{version}")
+    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
+
+  def render_page_hierarchy(pages, node=nil)
+    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 => 'index', :id => page.project, :page => page.title},
+                           :title => (page.respond_to?(: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) if pages[page.id]
+        content << "</li>\n"
+      end
+      content << "</ul>\n"
+    end
+    content
+  end
+  
+  # Renders flash messages
+  def render_flash_messages
+    s = ''
+    flash.each do |k,v|
+      s << content_tag('div', v, :class => "flash #{k}")
+    end
+    s
+  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
+  
+  # Renders the project quick-jump box
+  def render_project_jump_box
+    # Retrieve them now to avoid a COUNT query
+    projects = User.current.projects.all
+    if projects.any?
+      s = '<select onchange="if (this.value != \'\') { window.location = this.value; }">' +
+            "<option value=''>#{ l(:label_jump_to_a_project) }</option>" +
+            '<option value="" disabled="disabled">---</option>'
+      s << project_tree_options_for_select(projects, :selected => @project) do |p|
+        { :value => url_for(:controller => 'projects', :action => 'show', :id => p, :jump => current_menu_item) }
+      end
+      s << '</select>'
+      s
+    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; ') : '')
+      tag_options = {:value => project.id}
+      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
+  end
+  
+  # Yields the given block for each project with its level in the tree
+  def project_tree(projects, &block)
+    ancestors = []
+    projects.sort_by(&:lft).each do |project|
+      while (ancestors.any? && !project.is_descendant_of?(ancestors.last)) 
+        ancestors.pop
+      end
+      yield project, ancestors.size
+      ancestors << project
+    end
+  end
+  
+  def project_nested_ul(projects, &block)
+    s = ''
+    if projects.any?
+      ancestors = []
+      projects.sort_by(&:lft).each do |project|
+        if (ancestors.empty? || project.is_descendant_of?(ancestors.last))
+          s << "<ul>\n"
+        else
+          ancestors.pop
+          s << "</li>"
+          while (ancestors.any? && !project.is_descendant_of?(ancestors.last)) 
+            ancestors.pop
+            s << "</ul></li>\n"
+          end
+        end
+        s << "<li>"
+        s << yield(project).to_s
+        ancestors << project
+      end
+      s << ("</li></ul>\n" * ancestors.size)
+    end
+    s
+  end
+  
+  def principals_check_box_tags(name, principals)
+    s = ''
+    principals.sort.each do |principal|
+      s << "<label>#{ check_box_tag name, principal.id, false } #{h principal}</label>\n"
+    end
+    s 
+  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 html_hours(text)
+    text.gsub(%r{(\d+)\.(\d+)}, '<span class="hours hours-int">\1</span><span class="hours hours-dec">.\2</span>')
+  end
+
+  def authoring(created, author, options={})
+    l(options[:label] || :label_added_time_by, :author => link_to_user(author), :age => time_tag(created))
+  end
+  
+  def time_tag(time)
+    text = distance_of_time_in_words(Time.now, time)
+    if @project
+      link_to(text, {:controller => 'projects', :action => 'activity', :id => @project, :from => time.to_date}, :title => format_time(time))
+    else
+      content_tag('acronym', text, :title => format_time(time))
+    end
+  end
+
+  def syntax_highlight(name, content)
+    Redmine::SyntaxHighlighting.highlight_by_filename(content, name)
+  end
+
+  def to_path_param(path)
+    path.to_s.split(%r{[/\\]}).select {|p| !p.blank?}
+  end
+
+  def pagination_links_full(paginator, count=nil, options={})
+    page_param = options.delete(:page_param) || :page
+    per_page_links = options.delete(:per_page_links)
+    url_param = params.dup
+    # don't reuse query params if filters are present
+    url_param.merge!(:fields => nil, :values => nil, :operators => nil) if url_param.delete(:set_filter)
+
+    html = ''
+    if paginator.current.previous
+      html << link_to_remote_content_update('&#171; ' + l(:label_previous), url_param.merge(page_param => paginator.current.previous)) + ' '
+    end
+
+    html << (pagination_links_each(paginator, options) do |n|
+      link_to_remote_content_update(n.to_s, url_param.merge(page_param => n))
+    end || '')
+    
+    if paginator.current.next
+      html << ' ' + link_to_remote_content_update((l(:label_next) + ' &#187;'), url_param.merge(page_param => paginator.current.next))
+    end
+
+    unless count.nil?
+      html << " (#{paginator.current.first_item}-#{paginator.current.last_item}/#{count})"
+      if per_page_links != false && links = per_page_links(paginator.items_per_page)
+	      html << " | #{links}"
+      end
+    end
+
+    html
+  end
+  
+  def per_page_links(selected=nil)
+    url_param = params.dup
+    url_param.clear if url_param.has_key?(:set_filter)
+
+    links = Setting.per_page_options_array.collect do |n|
+      n == selected ? n : link_to_remote(n, {:update => "content",
+                                             :url => params.dup.merge(:per_page => n),
+                                             :method => :get},
+                                            {:href => url_for(url_param.merge(:per_page => n))})
+    end
+    links.size > 1 ? l(:label_display_per_page, links.join(', ')) : nil
+  end
+  
+  def reorder_links(name, url)
+    link_to(image_tag('2uparrow.png',   :alt => l(:label_sort_highest)), url.merge({"#{name}[move_to]" => 'highest'}), :method => :post, :title => l(:label_sort_highest)) +
+    link_to(image_tag('1uparrow.png',   :alt => l(:label_sort_higher)),  url.merge({"#{name}[move_to]" => 'higher'}),  :method => :post, :title => l(:label_sort_higher)) +
+    link_to(image_tag('1downarrow.png', :alt => l(:label_sort_lower)),   url.merge({"#{name}[move_to]" => 'lower'}),   :method => :post, :title => l(:label_sort_lower)) +
+    link_to(image_tag('2downarrow.png', :alt => l(:label_sort_lowest)),  url.merge({"#{name}[move_to]" => 'lowest'}),  :method => :post, :title => l(:label_sort_lowest))
+  end
+
+  def breadcrumb(*args)
+    elements = args.flatten
+    elements.any? ? content_tag('p', args.join(' &#187; ') + ' &#187; ', :class => 'breadcrumb') : nil
+  end
+  
+  def other_formats_links(&block)
+    concat('<p class="other-formats">' + l(:label_export_to))
+    yield Redmine::Views::OtherFormatsBuilder.new(self)
+    concat('</p>')
+  end
+  
+  def page_header_title
+    if @project.nil? || @project.new_record?
+      h(Setting.app_title)
+    else
+      b = []
+      ancestors = (@project.root? ? [] : @project.ancestors.visible)
+      if ancestors.any?
+        root = ancestors.shift
+        b << link_to(h(root), {:controller => 'projects', :action => 'show', :id => root, :jump => current_menu_item}, :class => 'root')
+        if ancestors.size > 2
+          b << '&#8230;'
+          ancestors = ancestors[-2, 2]
+        end
+        b += ancestors.collect {|p| link_to(h(p), {:controller => 'projects', :action => 'show', :id => p, :jump => current_menu_item}, :class => 'ancestor') }
+      end
+      b << h(@project)
+      b.join(' &#187; ')
+    end
+  end
+
+  def html_title(*args)
+    if args.empty?
+      title = []
+      title << @project.name if @project
+      title += @html_title if @html_title
+      title << Setting.app_title
+      title.select {|t| !t.blank? }.join(' - ')
+    else
+      @html_title ||= []
+      @html_title += args
+    end
+  end
+
+  def accesskey(s)
+    Redmine::AccessKeys.key_for s
+  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 = Redmine::WikiFormatting.to_html(Setting.text_formatting, text, :object => obj, :attribute => attr) { |macro, args| exec_macro(macro, obj, args) }
+      
+    parse_non_pre_blocks(text) 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
+  end
+  
+  def parse_non_pre_blocks(text)
+    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
+      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
+    if options[:attachments] || (obj && obj.respond_to?(:attachments))
+      attachments = nil
+      text.gsub!(/src="([^\/"]+\.(bmp|gif|jpg|jpeg|png))"(\s+alt="([^"]*)")?/i) do |m|
+        filename, ext, alt, alttext = $1.downcase, $2, $3, $4 
+        attachments ||= (options[:attachments] || obj.attachments).sort_by(&:created_on).reverse
+        # search for the picture in attachments
+        if found = attachments.detect { |att| att.filename.downcase == filename }
+          image_url = url_for :only_path => only_path, :controller => 'attachments', :action => 'download', :id => found
+          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, $5
+      if esc.nil?
+        if page =~ /^([^\:]+)\:(.*)$/
+          link_project = Project.find_by_name($1) || Project.find_by_identifier($1)
+          page = $2
+          title ||= $1 if page.blank?
+        end
+
+        if link_project && link_project.wiki
+          # extract anchor
+          anchor = nil
+          if page =~ /^(.+?)\#(.+)$/
+            page, anchor = $1, $2
+          end
+          # check if page exists
+          wiki_page = link_project.wiki.find_page(page)
+          url = case options[:wiki_links]
+            when :local; "#{title}.html"
+            when :anchor; "##{title}"   # used for single-file wiki export
+            else
+              url_for(:only_path => only_path, :controller => 'wiki', :action => 'index', :id => link_project, :page => Wiki.titleize(page), :anchor => anchor)
+            end
+          link_to((title || page), url, :class => ('wiki-page' + (wiki_page ? '' : ' new')))
+        else
+          # project or wiki doesn't exist
+          all
+        end
+      else
+        all
+      end
+    end
+  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
+  def parse_redmine_links(text, project, obj, attr, only_path, options)
+    text.gsub!(%r{([\s\(,\-\[\>]|^)(!)?(attachment|document|version|commit|source|export|message|project)?((#|r)(\d+)|(:)([^"\s<>][^\s<>]*?|"[^"]+?"))(?=(?=[[:punct:]]\W)|,|\s|\]|<|$)}) do |m|
+      leading, esc, prefix, sep, identifier = $1, $2, $3, $5 || $7, $6 || $8
+      link = nil
+      if esc.nil?
+        if prefix.nil? && sep == 'r'
+          if project && (changeset = project.changesets.find_by_revision(identifier))
+            link = link_to("r#{identifier}", {:only_path => only_path, :controller => 'repositories', :action => 'revision', :id => project, :rev => changeset.revision},
+                                      :class => 'changeset',
+                                      :title => truncate_single_line(changeset.comments, :length => 100))
+          end
+        elsif sep == '#'
+          oid = identifier.to_i
+          case prefix
+          when nil
+            if issue = Issue.visible.find_by_id(oid, :include => :status)
+              link = link_to("##{oid}", {:only_path => only_path, :controller => 'issues', :action => 'show', :id => oid},
+                                        :class => issue.css_classes,
+                                        :title => "#{truncate(issue.subject, :length => 100)} (#{issue.status.name})")
+            end
+          when 'document'
+            if document = Document.find_by_id(oid, :include => [:project], :conditions => Project.visible_by(User.current))
+              link = link_to h(document.title), {:only_path => only_path, :controller => 'documents', :action => 'show', :id => document},
+                                                :class => 'document'
+            end
+          when 'version'
+            if version = Version.find_by_id(oid, :include => [:project], :conditions => Project.visible_by(User.current))
+              link = link_to h(version.name), {:only_path => only_path, :controller => 'versions', :action => 'show', :id => version},
+                                              :class => 'version'
+            end
+          when 'message'
+            if message = Message.find_by_id(oid, :include => [:parent, {:board => :project}], :conditions => Project.visible_by(User.current))
+              link = link_to h(truncate(message.subject, :length => 60)), {:only_path => only_path,
+                                                                :controller => 'messages',
+                                                                :action => 'show',
+                                                                :board_id => message.board,
+                                                                :id => message.root,
+                                                                :anchor => (message.parent ? "message-#{message.id}" : nil)},
+                                                 :class => 'message'
+            end
+          when 'project'
+            if p = Project.visible.find_by_id(oid)
+              link = link_to h(p.name), {:only_path => only_path, :controller => 'projects', :action => 'show', :id => p},
+                                              :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.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.find_by_name(name)
+              link = link_to h(version.name), {:only_path => only_path, :controller => 'versions', :action => 'show', :id => version},
+                                              :class => 'version'
+            end
+          when 'commit'
+            if project && (changeset = project.changesets.find(:first, :conditions => ["scmid LIKE ?", "#{name}%"]))
+              link = link_to h("#{name}"), {:only_path => only_path, :controller => 'repositories', :action => 'revision', :id => project, :rev => changeset.revision},
+                                           :class => 'changeset',
+                                           :title => truncate_single_line(changeset.comments, :length => 100)
+            end
+          when 'source', 'export'
+            if project && project.repository
+              name =~ %r{^[/\\]*(.*?)(@([0-9a-f]+))?(#(L\d+))?$}
+              path, rev, anchor = $1, $3, $5
+              link = link_to h("#{prefix}:#{name}"), {:controller => 'repositories', :action => 'entry', :id => project,
+                                                      :path => to_path_param(path),
+                                                      :rev => rev,
+                                                      :anchor => anchor,
+                                                      :format => (prefix == 'export' ? 'raw' : nil)},
+                                                     :class => (prefix == 'export' ? 'source download' : 'source')
+            end
+          when 'attachment'
+            attachments = options[:attachments] || (obj && obj.respond_to?(:attachments) ? obj.attachments : nil)
+            if attachments && attachment = attachments.detect {|a| a.filename == name }
+              link = link_to h(attachment.filename), {:only_path => only_path, :controller => 'attachments', :action => 'download', :id => attachment},
+                                                     :class => 'attachment'
+            end
+          when 'project'
+            if p = Project.visible.find(:first, :conditions => ["identifier = :s OR LOWER(name) = :s", {:s => name.downcase}])
+              link = link_to h(p.name), {:only_path => only_path, :controller => 'projects', :action => 'show', :id => p},
+                                              :class => 'project'
+            end
+          end
+        end
+      end
+      leading + (link || "#{prefix}#{sep}#{identifier}")
+    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
+  end
+
+  def lang_options_for_select(blank=true)
+    (blank ? [["(auto)", ""]] : []) +
+      valid_languages.collect{|lang| [ ll(lang.to_s, :general_lang_name), lang.to_s]}.sort{|x,y| x.last <=> y.last }
+  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_tabular_form_for(name, object, options, &proc)
+    options[:html] ||= {}
+    options[:html][:class] = 'tabular' unless options[:html].has_key?(:class)
+    form_for(name, object, options.merge({ :builder => TabularFormBuilder, :lang => current_language}), &proc)
+  end
+
+  def back_url_hidden_field_tag
+    back_url = params[:back_url] || request.env['HTTP_REFERER']
+    back_url = CGI.unescape(back_url.to_s)
+    hidden_field_tag('back_url', CGI.escape(back_url)) unless back_url.blank?
+  end
+
+  def check_all_links(form_name)
+    link_to_function(l(:button_check_all), "checkAll('#{form_name}', true)") +
+    " | " +
+    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') : '') +
+        (pcts[1] > 0 ? content_tag('td', '', :style => "width: #{pcts[1]}%;", :class => 'done') : '') +
+        (pcts[2] > 0 ? content_tag('td', '', :style => "width: #{pcts[2]}%;", :class => 'todo') : '')
+      ), :class => 'progress', :style => "width: #{width};") +
+      content_tag('p', legend, :class => 'pourcent')
+  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
+      @context_menu_included = true
+    end
+    javascript_tag "new ContextMenu('#{ url_for(url) }')"
+  end
+
+  def context_menu_link(name, url, options={})
+    options[:class] ||= ''
+    if options.delete(:selected)
+      options[:class] << ' icon-checked disabled'
+      options[:disabled] = true
+    end
+    if options.delete(:disabled)
+      options.delete(:method)
+      options.delete(:confirm)
+      options.delete(:onclick)
+      options[:class] << ' disabled'
+      url = '#'
+    end
+    link_to name, url, options
+  end
+
+  def calendar_for(field_id)
+    include_calendar_headers_tags
+    image_tag("calendar.png", {:id => "#{field_id}_trigger",:class => "calendar-trigger"}) +
+    javascript_tag("Calendar.setup({inputField : '#{field_id}', ifFormat : '%Y-%m-%d', button : '#{field_id}_trigger' });")
+  end
+
+  def include_calendar_headers_tags
+    unless @calendar_headers_tags_included
+      @calendar_headers_tags_included = true
+      content_for :header_tags do
+        start_of_week = case Setting.start_of_week.to_i
+        when 1
+          'Calendar._FD = 1;' # Monday
+        when 7
+          'Calendar._FD = 0;' # Sunday
+        else
+          '' # use language
+        end
+        
+        javascript_include_tag('calendar/calendar') +
+        javascript_include_tag("calendar/lang/calendar-#{current_language.to_s.downcase}.js") +
+        javascript_tag(start_of_week) +  
+        javascript_include_tag('calendar/calendar-setup') +
+        stylesheet_link_tag('calendar')
+      end
+    end
+  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
+
+  # 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 <[e-mail]>')
+  def avatar(user, options = { })
+    if Setting.gravatar_enabled?
+      options.merge!({:ssl => Setting.protocol == 'https', :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
+    end
+  end
+
+  private
+
+  def wiki_helper
+    helper = Redmine::WikiFormatting.helper_for(Setting.text_formatting)
+    extend helper
+    return self
+  end
+  
+  def link_to_remote_content_update(text, url_params)
+    link_to_remote(text,
+      {:url => url_params, :method => :get, :update => 'content', :complete => 'window.scrollTo(0,0)'},
+      {:href => url_for(:params => url_params)}
+    )
+  end
+  
+end