Improve formatting of note descriptions in GPX and RSS responses

[rails.git] / app / helpers / application_helper.rb

diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index b28ab7c1a6eca2dabe18a38d1b90e694bc9e5f6d..ec6c455b3dcfb24d9ce6fa145e6c731390a01669 100644 (file)
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -1,6 +1,24 @@
 module ApplicationHelper
+  require 'rexml/document'
+
+  def sanitize(text)
+    Sanitize.clean(text, Sanitize::Config::OSM)
+  end
+
   def htmlize(text)
-    return sanitize(auto_link(simple_format(text), :urls))
+    return linkify(sanitize(simple_format(text)))
+  end
+
+  def linkify(text)
+    return auto_link(text, :link => :urls, :html => { :rel => "nofollow" })
+  end
+
+  def html_escape_unicode(text)
+    chars = ActiveSupport::Multibyte::Chars.u_unpack(text).map do |c|
+      c < 127 ? c.chr : "&##{c.to_s};"
+    end
+
+    return chars.join("")
   end
 
   def rss_link_to(*args)
@@ -10,4 +28,141 @@ module ApplicationHelper
   def atom_link_to(*args)
     return link_to(image_tag("RSS.gif", :size => "16x16", :border => 0), Hash[*args], { :class => "rsssmall" });
   end
+
+  def javascript_strings
+    js = ""
+
+    js << "<script type='text/javascript'>\n"
+    js << "i18n_strings = new Array();\n"
+    js << javascript_strings_for_key("javascripts")
+    js << "</script>\n"
+
+    return js
+  end
+
+  def style_rules
+    css = ""
+
+    css << ".hidden { display: none }";
+    css << ".hide_unless_logged_in { display: none }" unless @user;
+    css << ".hide_if_logged_in { display: none }" if @user;
+    css << ".hide_if_user_#{@user.id} { display: none }" if @user;
+    css << ".show_if_user_#{@user.id} { display: inline }" if @user;
+    css << ".hide_unless_administrator { display: none }" unless @user and @user.administrator?;
+
+    return content_tag(:style, css, :type => "text/css")
+  end
+
+  def if_logged_in(tag = :div, &block)
+    concat(content_tag(tag, capture(&block), :class => "hide_unless_logged_in"))
+  end
+
+  def if_not_logged_in(tag = :div, &block)
+    concat(content_tag(tag, capture(&block), :class => "hide_if_logged_in"))
+  end
+
+  def if_user(user, tag = :div, &block)
+    if user
+      concat(content_tag(tag, capture(&block), :class => "hidden show_if_user_#{user.id}"))
+    end
+  end
+
+  def unless_user(user, tag = :div, &block)
+    if user
+      concat(content_tag(tag, capture(&block), :class => "hide_if_user_#{user.id}"))
+    else
+      concat(content_tag(tag, capture(&block)))
+    end
+  end
+
+  def if_administrator(tag = :div, &block)
+    concat(content_tag(tag, capture(&block), :class => "hide_unless_administrator"))
+  end
+
+  def describe_location(lat, lon, zoom = nil, language = nil)
+    zoom = zoom || 14
+    language = language || request.user_preferred_languages.join(',')
+    url = "http://nominatim.openstreetmap.org/reverse?lat=#{lat}&lon=#{lon}&zoom=#{zoom}&accept-language=#{language}"
+
+    begin
+      response = Timeout::timeout(4) do
+        REXML::Document.new(Net::HTTP.get(URI.parse(url)))
+      end
+    rescue Exception
+      response = nil
+    end
+
+    if response and result = response.get_text("reversegeocode/result")
+      result.to_s
+    else
+      "#{number_with_precision(lat, :precision => 3)}, #{number_with_precision(lon, :precision => 3)}"
+    end
+  end
+
+  def user_image(user, options = {})
+    options[:class] ||= "user_image"
+
+    if user.image
+      image_tag url_for_file_column(user, "image"), options
+    else
+      image_tag "anon_large.png", options
+    end
+  end
+
+  def user_thumbnail(user, options = {})
+    options[:class] ||= "user_thumbnail"
+
+    if user.image
+      image_tag url_for_file_column(user, "image"), options
+    else
+      image_tag "anon_small.png", options
+    end
+  end
+
+  def preferred_editor
+    if params[:editor]
+      params[:editor]
+    elsif @user and @user.preferred_editor
+      @user.preferred_editor
+    else
+      DEFAULT_EDITOR
+    end
+  end
+
+  def friendly_date(date)
+    content_tag(:span, time_ago_in_words(date), :title => l(date, :format => :friendly))
+  end
+
+  def note_author(object, link_options = {})
+    if object.author.nil?
+      h(object.author_name)
+    else
+      link_to h(object.author_name), link_options.merge({:controller => "user", :action => "view", :display_name => object.author_name})
+    end
+  end
+
+  def with_format(format, &block)
+    old_format = @template_format
+    @template_format = format
+    result = block.call
+    @template_format = old_format
+    return result
+  end
+
+private
+
+  def javascript_strings_for_key(key)
+    js = ""
+    value = I18n.t(key, :locale => "en")
+
+    if value.is_a?(String)
+      js << "i18n_strings['#{key}'] = '" << escape_javascript(t(key)) << "';\n"
+    else
+      value.each_key do |k|
+        js << javascript_strings_for_key("#{key}.#{k}")
+      end
+    end
+
+    return js
+  end
 end