Displays thumbnails of attached images of the issue view (#1006).

This behaviour can be turned on/off in Settings -> Display (off by default). Thumbnail size can be configured there too.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9933 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/helpers/application_helper.rb

@@ -153,6 +153,12 @@ module ApplicationHelper
     end
   end
 
+  def thumbnail_tag(attachment)
+    link_to image_tag(url_for(:controller => 'attachments', :action => 'thumbnail', :id => attachment)),
+      {:controller => 'attachments', :action => 'show', :id => attachment, :filename => attachment.filename},
+      :title => attachment.filename
+  end
+
   def toggle_link(name, id, options={})
     onclick = "Element.toggle('#{id}'); "
     onclick << (options[:focus] ? "Form.Element.focus('#{options[:focus]}'); " : "this.blur(); ")

app/helpers/attachments_helper.rb

@@ -21,12 +21,14 @@ module AttachmentsHelper
   # Displays view/delete links to the attachments of the given object
   # Options:
   #   :author -- author names are not displayed if set to false
+  #   :thumbails -- display thumbnails if enabled in settings
   def link_to_attachments(container, options = {})
-    options.assert_valid_keys(:author)
+    options.assert_valid_keys(:author, :thumbnails)
 
     if container.attachments.any?
       options = {:deletable => container.attachments_deletable?, :author => true}.merge(options)
-      render :partial => 'attachments/links', :locals => {:attachments => container.attachments, :options => options}
+      render :partial => 'attachments/links',
+        :locals => {:attachments => container.attachments, :options => options, :thumbnails => (options[:thumbnails] && Setting.thumbnails_enabled?)}
     end
   end