Treat all newly entered blocks of text as Markdown

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

diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index ab0ba82a830f0440dee2273edb2bf2bf9f34febc..7a72932f55affbbd6550adc3a50a394bb93cfc1d 100644 (file)
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -1,10 +1,16 @@
 module ApplicationHelper
-  def htmlize(text)
-    return sanitize(auto_link(simple_format(text), :urls))
+  require 'rexml/document'
+
+  def linkify(text)
+    if text.html_safe?
+      Rinku.auto_link(text, :urls, tag_options(:rel => "nofollow")).html_safe
+    else
+      Rinku.auto_link(text, :urls, tag_options(:rel => "nofollow"))
+    end
   end
 
   def html_escape_unicode(text)
-    chars = ActiveSupport::Multibyte::Chars.u_unpack(text).map do |c|
+    chars = ActiveSupport::Multibyte::Unicode.u_unpack(text).map do |c|
       c < 127 ? c.chr : "&##{c.to_s};"
     end
 
@@ -27,14 +33,99 @@ module ApplicationHelper
     js << javascript_strings_for_key("javascripts")
     js << "</script>\n"
 
-    return js
+    return raw(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)
+    content_tag(tag, capture(&block), :class => "hide_unless_logged_in")
+  end
+
+  def if_not_logged_in(tag = :div, &block)
+    content_tag(tag, capture(&block), :class => "hide_if_logged_in")
+  end
+
+  def if_user(user, tag = :div, &block)
+    if user
+      content_tag(tag, capture(&block), :class => "hidden show_if_user_#{user.id}")
+    end
+  end
+
+  def unless_user(user, tag = :div, &block)
+    if user
+      content_tag(tag, capture(&block), :class => "hide_if_user_#{user.id}")
+    else
+      content_tag(tag, capture(&block))
+    end
+  end
+
+  def if_administrator(tag = :div, &block)
+    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 = OSM::Timer.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"
+
+    image_tag user.image.url(:large), options
+  end
+
+  def user_thumbnail(user, options = {})
+    options[:class] ||= "user_thumbnail"
+
+    image_tag user.image.url(:small), options
+  end
+
+  def preferred_editor
+    if params[:editor]
+      params[:editor]
+    elsif @user and @user.preferred_editor
+      @user.preferred_editor
+    else
+      DEFAULT_EDITOR
+    end
+  end
+
+  def scale_to_zoom(scale)
+    Math.log(360.0 / (scale.to_f * 512.0)) / Math.log(2.0)
   end
 
 private
 
   def javascript_strings_for_key(key)
     js = ""
-    value = t(key, :locale => "en")
+    value = I18n.t(key, :locale => "en")
 
     if value.is_a?(String)
       js << "i18n_strings['#{key}'] = '" << escape_javascript(t(key)) << "';\n"