application_helper.rb 25.5 KB
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# 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.
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#
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# 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.
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#
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# 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.

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require 'coderay'
require 'coderay/helpers/file_type'
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require 'forwardable'
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module ApplicationHelper
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  include Redmine::WikiFormatting::Macros::Definitions
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  include GravatarHelper::PublicMethods
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  extend Forwardable
  def_delegators :wiki_helper, :wikitoolbar_for, :heads_for_wiki_formatter

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

  # Display a link if user is authorized
  def link_to_if_authorized(name, options = {}, html_options = nil, *parameters_for_method_reference)
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    link_to(name, options, html_options, *parameters_for_method_reference) if authorize_for(options[:controller] || params[:controller], options[:action])
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  end
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  # 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])
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  end

  # Display a link to user's account page
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  def link_to_user(user, options={})
    (user && !user.anonymous?) ? link_to(user.name(options[:format]), :controller => 'account', :action => 'show', :id => user) : 'Anonymous'
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  end
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  def link_to_issue(issue, options={})
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    options[:class] ||= ''
    options[:class] << ' issue'
    options[:class] << ' closed' if issue.closed?
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    link_to "#{issue.tracker.name} ##{issue.id}", {:controller => "issues", :action => "show", :id => issue}, options
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  end
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  # 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'
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    link_to(h(text), {:controller => 'attachments', :action => action, :id => attachment, :filename => attachment.filename }, options)
  end
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  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
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  def image_to_function(name, function, html_options = {})
    html_options.symbolize_keys!
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    tag(:input, html_options.merge({
        :type => "image", :src => image_path(name),
        :onclick => (html_options[:onclick] ? "#{html_options[:onclick]}; " : "") + "#{function};"
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        }))
  end
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  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
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  def format_date(date)
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    return nil unless date
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    # "Setting.date_format.size < 2" is a temporary fix (content of date_format setting changed)
    @date_format ||= (Setting.date_format.blank? || Setting.date_format.size < 2 ? l(:general_fmt_date) : Setting.date_format)
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    date.strftime(@date_format)
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  end
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  def format_time(time, include_date = true)
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    return nil unless time
    time = time.to_time if time.is_a?(String)
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    zone = User.current.time_zone
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    local = zone ? time.in_time_zone(zone) : (time.utc? ? time.localtime : time)
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    @date_format ||= (Setting.date_format.blank? || Setting.date_format.size < 2 ? l(:general_fmt_date) : Setting.date_format)
    @time_format ||= (Setting.time_format.blank? ? l(:general_fmt_time) : Setting.time_format)
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    include_date ? local.strftime("#{@date_format} #{@time_format}") : local.strftime(@time_format)
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  end
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  def format_activity_title(text)
    h(truncate_single_line(text, 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, 250).gsub(%r{<(pre|code)>.*$}m, '...'))
  end
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  def distance_of_date_in_words(from_date, to_date = 0)
    from_date = from_date.to_date if from_date.respond_to?(:to_date)
    to_date = to_date.to_date if to_date.respond_to?(:to_date)
    distance_in_days = (to_date - from_date).abs
    lwr(:actionview_datehelper_time_in_words_day, distance_in_days)
  end
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  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
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  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

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  # Truncates and returns the string as a single line
  def truncate_single_line(string, *args)
    truncate(string, *args).gsub(%r{[\r\n]+}m, ' ')
  end
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  def html_hours(text)
    text.gsub(%r{(\d+)\.(\d+)}, '<span class="hours hours-int">\1</span><span class="hours hours-dec">.\2</span>')
  end
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  def authoring(created, author, options={})
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    time_tag = @project.nil? ? content_tag('acronym', distance_of_time_in_words(Time.now, created), :title => format_time(created)) :
                               link_to(distance_of_time_in_words(Time.now, created), 
                                       {:controller => 'projects', :action => 'activity', :id => @project, :from => created.to_date},
                                       :title => format_time(created))
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    author_tag = (author.is_a?(User) && !author.anonymous?) ? link_to(h(author), :controller => 'account', :action => 'show', :id => author) : h(author || 'Anonymous')
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    l(options[:label] || :label_added_time_by, author_tag, time_tag)
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  end
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  def l_or_humanize(s, options={})
    k = "#{options[:prefix]}#{s}".to_sym
    l_has_string?(k) ? l(k) : s.to_s.humanize
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  end
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  def day_name(day)
    l(:general_day_names).split(',')[day-1]
  end
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  def month_name(month)
    l(:actionview_datehelper_select_month_names).split(',')[month-1]
  end

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  def syntax_highlight(name, content)
    type = CodeRay::FileType[name]
    type ? CodeRay.scan(content, type).html : h(content)
  end
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  def to_path_param(path)
    path.to_s.split(%r{[/\\]}).select {|p| !p.blank?}
  end

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  def pagination_links_full(paginator, count=nil, options={})
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    page_param = options.delete(:page_param) || :page
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    url_param = params.dup
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    # don't reuse params if filters are present
    url_param.clear if url_param.has_key?(:set_filter)
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    html = ''
    html << link_to_remote(('&#171; ' + l(:label_previous)),
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                            {:update => 'content',
                             :url => url_param.merge(page_param => paginator.current.previous),
                             :complete => 'window.scrollTo(0,0)'},
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                            {:href => url_for(:params => url_param.merge(page_param => paginator.current.previous))}) + ' ' if paginator.current.previous
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    html << (pagination_links_each(paginator, options) do |n|
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      link_to_remote(n.to_s,
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                      {:url => {:params => url_param.merge(page_param => n)},
                       :update => 'content',
                       :complete => 'window.scrollTo(0,0)'},
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                      {:href => url_for(:params => url_param.merge(page_param => n))})
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    end || '')
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    html << ' ' + link_to_remote((l(:label_next) + ' &#187;'),
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                                 {:update => 'content',
                                  :url => url_param.merge(page_param => paginator.current.next),
                                  :complete => 'window.scrollTo(0,0)'},
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                                 {:href => url_for(:params => url_param.merge(page_param => paginator.current.next))}) if paginator.current.next
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    unless count.nil?
      html << [" (#{paginator.current.first_item}-#{paginator.current.last_item}/#{count})", per_page_links(paginator.items_per_page)].compact.join(' | ')
    end
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    html
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  end
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  def per_page_links(selected=nil)
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    url_param = params.dup
    url_param.clear if url_param.has_key?(:set_filter)
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    links = Setting.per_page_options_array.collect do |n|
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      n == selected ? n : link_to_remote(n, {:update => "content", :url => params.dup.merge(:per_page => n)},
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                                            {:href => url_for(url_param.merge(:per_page => n))})
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    end
    links.size > 1 ? l(:label_display_per_page, links.join(', ')) : nil
  end
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  def breadcrumb(*args)
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    elements = args.flatten
    elements.any? ? content_tag('p', args.join(' &#187; ') + ' &#187; ', :class => 'breadcrumb') : nil
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  end
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  def html_title(*args)
    if args.empty?
      title = []
      title << @project.name if @project
      title += @html_title if @html_title
      title << Setting.app_title
      title.compact.join(' - ')
    else
      @html_title ||= []
      @html_title += args
    end
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  end
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  def accesskey(s)
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    Redmine::AccessKeys.key_for s
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  end

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  # 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
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      obj = options[:object]
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      text = args.shift
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    when 2
      obj = args.shift
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      text = obj.send(args.shift).to_s
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    else
      raise ArgumentError, 'invalid arguments to textilizable'
    end
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    return '' if text.blank?
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    only_path = options.delete(:only_path) == false ? false : true
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    # when using an image link, try to use an attachment, if possible
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    attachments = options[:attachments] || (obj && obj.respond_to?(:attachments) ? obj.attachments : nil)
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    if attachments
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      attachments = attachments.sort_by(&:created_on).reverse
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      text = text.gsub(/!((\<|\=|\>)?(\([^\)]+\))?(\[[^\]]+\])?(\{[^\}]+\})?)(\S+\.(bmp|gif|jpg|jpeg|png))!/i) do |m|
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        style = $1
        filename = $6
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        rf = Regexp.new(Regexp.escape(filename),  Regexp::IGNORECASE)
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        # search for the picture in attachments
        if found = attachments.detect { |att| att.filename =~ rf }
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          image_url = url_for :only_path => only_path, :controller => 'attachments', :action => 'download', :id => found
          desc = found.description.to_s.gsub(/^([^\(\)]*).*$/, "\\1")
          alt = desc.blank? ? nil : "(#{desc})"
          "!#{style}#{image_url}#{alt}!"
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        else
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          "!#{style}#{filename}!"
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        end
      end
    end
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    text = Redmine::WikiFormatting.to_html(Setting.text_formatting, text) { |macro, args| exec_macro(macro, obj, args) }
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    # different methods for formatting wiki links
    case options[:wiki_links]
    when :local
      # used for local links to html files
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      format_wiki_link = Proc.new {|project, title, anchor| "#{title}.html" }
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    when :anchor
      # used for single-file wiki export
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      format_wiki_link = Proc.new {|project, title, anchor| "##{title}" }
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    else
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      format_wiki_link = Proc.new {|project, title, anchor| url_for(:only_path => only_path, :controller => 'wiki', :action => 'index', :id => project, :page => title, :anchor => anchor) }
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    end
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    project = options[:project] || @project || (obj && obj.respond_to?(:project) ? obj.project : nil)
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    # Wiki links
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    #
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    # Examples:
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    #   [[mypage]]
    #   [[mypage|mytext]]
    # wiki links can refer other project wikis, using project name or identifier:
    #   [[project:]] -> wiki starting page
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    #   [[project:|mytext]]
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    #   [[project:mypage]]
    #   [[project:mypage|mytext]]
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    text = text.gsub(/(!)?(\[\[([^\]\n\|]+)(\|([^\]\n\|]+))?\]\])/) do |m|
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      link_project = project
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      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 ||= $1 if page.blank?
        end
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        if link_project && link_project.wiki
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          # extract anchor
          anchor = nil
          if page =~ /^(.+?)\#(.+)$/
            page, anchor = $1, $2
          end
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          # check if page exists
          wiki_page = link_project.wiki.find_page(page)
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          link_to((title || page), format_wiki_link.call(link_project, Wiki.titleize(page), anchor),
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                                   :class => ('wiki-page' + (wiki_page ? '' : ' new')))
        else
          # project or wiki doesn't exist
          title || page
        end
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      else
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        all
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      end
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    end
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    # Redmine links
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    #
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    # Examples:
    #   Issues:
    #     #52 -> Link to issue #52
    #   Changesets:
    #     r52 -> Link to revision 52
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    #     commit:a85130f -> Link to scmid starting with a85130f
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    #   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
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    #   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
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    #  Forum messages:
    #     message#1218 -> Link to message with id 1218
    text = text.gsub(%r{([\s\(,\-\>]|^)(!)?(attachment|document|version|commit|source|export|message)?((#|r)(\d+)|(:)([^"\s<>][^\s<>]*?|"[^"]+?"))(?=(?=[[:punct:]]\W)|\s|<|$)}) do |m|
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      leading, esc, prefix, sep, oid = $1, $2, $3, $5 || $7, $6 || $8
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      link = nil
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      if esc.nil?
        if prefix.nil? && sep == 'r'
          if project && (changeset = project.changesets.find_by_revision(oid))
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            link = link_to("r#{oid}", {:only_path => only_path, :controller => 'repositories', :action => 'revision', :id => project, :rev => oid},
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                                      :class => 'changeset',
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                                      :title => truncate_single_line(changeset.comments, 100))
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          end
        elsif sep == '#'
          oid = oid.to_i
          case prefix
          when nil
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            if issue = Issue.find_by_id(oid, :include => [:project, :status], :conditions => Project.visible_by(User.current))
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              link = link_to("##{oid}", {:only_path => only_path, :controller => 'issues', :action => 'show', :id => oid},
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                                        :class => (issue.closed? ? 'issue closed' : 'issue'),
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                                        :title => "#{truncate(issue.subject, 100)} (#{issue.status.name})")
              link = content_tag('del', link) if issue.closed?
            end
          when 'document'
            if document = Document.find_by_id(oid, :include => [:project], :conditions => Project.visible_by(User.current))
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              link = link_to h(document.title), {:only_path => only_path, :controller => 'documents', :action => 'show', :id => document},
                                                :class => 'document'
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            end
          when 'version'
            if version = Version.find_by_id(oid, :include => [:project], :conditions => Project.visible_by(User.current))
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              link = link_to h(version.name), {:only_path => only_path, :controller => 'versions', :action => 'show', :id => version},
                                              :class => 'version'
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            end
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          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, 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
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          end
        elsif sep == ':'
          # removes the double quotes if any
          name = oid.gsub(%r{^"(.*)"$}, "\\1")
          case prefix
          when 'document'
            if project && document = project.documents.find_by_title(name)
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              link = link_to h(document.title), {:only_path => only_path, :controller => 'documents', :action => 'show', :id => document},
                                                :class => 'document'
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            end
          when 'version'
            if project && version = project.versions.find_by_name(name)
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              link = link_to h(version.name), {:only_path => only_path, :controller => 'versions', :action => 'show', :id => version},
                                              :class => 'version'
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            end
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          when 'commit'
            if project && (changeset = project.changesets.find(:first, :conditions => ["scmid LIKE ?", "#{name}%"]))
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              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, 100)
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            end
          when 'source', 'export'
            if project && project.repository
              name =~ %r{^[/\\]*(.*?)(@([0-9a-f]+))?(#(L\d+))?$}
              path, rev, anchor = $1, $3, $5
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              link = link_to h("#{prefix}:#{name}"), {:controller => 'repositories', :action => 'entry', :id => project,
                                                      :path => to_path_param(path),
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                                                      :rev => rev,
                                                      :anchor => anchor,
                                                      :format => (prefix == 'export' ? 'raw' : nil)},
                                                     :class => (prefix == 'export' ? 'source download' : 'source')
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            end
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          when 'attachment'
            if attachments && attachment = attachments.detect {|a| a.filename == name }
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              link = link_to h(attachment.filename), {:only_path => only_path, :controller => 'attachments', :action => 'download', :id => attachment},
                                                     :class => 'attachment'
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            end
          end
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        end
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      end
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      leading + (link || "#{prefix}#{sep}#{oid}")
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    end
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    text
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  end
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  # 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
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  def error_messages_for(object_name, options = {})
    options = options.symbolize_keys
    object = instance_variable_get("@#{object_name}")
    if object && !object.errors.empty?
      # build full_messages here with controller current language
      full_messages = []
      object.errors.each do |attr, msg|
        next if msg.nil?
        msg = msg.first if msg.is_a? Array
        if attr == "base"
          full_messages << l(msg)
        else
          full_messages << "&#171; " + (l_has_string?("field_" + attr) ? l("field_" + attr) : object.class.human_attribute_name(attr)) + " &#187; " + l(msg) unless attr == "custom_values"
        end
      end
      # retrieve custom values error messages
      if object.errors[:custom_values]
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        object.custom_values.each do |v|
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          v.errors.each do |attr, msg|
            next if msg.nil?
            msg = msg.first if msg.is_a? Array
            full_messages << "&#171; " + v.custom_field.name + " &#187; " + l(msg)
          end
        end
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      end
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      content_tag("div",
        content_tag(
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          options[:header_tag] || "span", lwr(:gui_validation_error, full_messages.length) + ":"
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        ) +
        content_tag("ul", full_messages.collect { |msg| content_tag("li", msg) }),
        "id" => options[:id] || "errorExplanation", "class" => options[:class] || "errorExplanation"
      )
    else
      ""
    end
  end
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  def lang_options_for_select(blank=true)
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    (blank ? [["(auto)", ""]] : []) +
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      GLoc.valid_languages.collect{|lang| [ ll(lang.to_s, :general_lang_name), lang.to_s]}.sort{|x,y| x.last <=> y.last }
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  end
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  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
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  def labelled_tabular_form_for(name, object, options, &proc)
    options[:html] ||= {}
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    options[:html][:class] = 'tabular' unless options[:html].has_key?(:class)
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    form_for(name, object, options.merge({ :builder => TabularFormBuilder, :lang => current_language}), &proc)
  end
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  def back_url_hidden_field_tag
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    back_url = params[:back_url] || request.env['HTTP_REFERER']
    hidden_field_tag('back_url', back_url) unless back_url.blank?
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  end
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  def check_all_links(form_name)
    link_to_function(l(:button_check_all), "checkAll('#{form_name}', true)") +
    " | " +
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    link_to_function(l(:button_uncheck_all), "checkAll('#{form_name}', false)")
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  end
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  def progress_bar(pcts, options={})
    pcts = [pcts, pcts] unless pcts.is_a?(Array)
    pcts[1] = pcts[1] - pcts[0]
    pcts << (100 - pcts[1] - pcts[0])
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    width = options[:width] || '100px;'
    legend = options[:legend] || ''
    content_tag('table',
      content_tag('tr',
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        (pcts[0] > 0 ? content_tag('td', '', :style => "width: #{pcts[0].floor}%;", :class => 'closed') : '') +
        (pcts[1] > 0 ? content_tag('td', '', :style => "width: #{pcts[1].floor}%;", :class => 'done') : '') +
        (pcts[2] > 0 ? content_tag('td', '', :style => "width: #{pcts[2].floor}%;", :class => 'todo') : '')
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      ), :class => 'progress', :style => "width: #{width};") +
      content_tag('p', legend, :class => 'pourcent')
  end
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  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
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  def calendar_for(field_id)
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    include_calendar_headers_tags
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    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
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  def include_calendar_headers_tags
    unless @calendar_headers_tags_included
      @calendar_headers_tags_included = true
      content_for :header_tags do
        javascript_include_tag('calendar/calendar') +
        javascript_include_tag("calendar/lang/calendar-#{current_language}.js") +
        javascript_include_tag('calendar/calendar-setup') +
        stylesheet_link_tag('calendar')
      end
    end
  end
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  def content_for(name, content = nil, &block)
    @has_content ||= {}
    @has_content[name] = true
    super(name, content, &block)
  end
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  def has_content?(name)
    (@has_content && @has_content[name]) || false
  end
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  # 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 = { })
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    if Setting.gravatar_enabled?
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      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
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    end
  end

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