Merge branch 'master' into 2525-java-sdk

[arvados.git] / apps / workbench / app / helpers / application_helper.rb

diff --git a/apps/workbench/app/helpers/application_helper.rb b/apps/workbench/app/helpers/application_helper.rb
index 953b6665bf2f4326198928fbed7ede6d3e84aadd..b17231336fbd9b51f3187000a7ad9c42073ae154 100644 (file)
--- a/apps/workbench/app/helpers/application_helper.rb
+++ b/apps/workbench/app/helpers/application_helper.rb
@@ -38,7 +38,7 @@ module ApplicationHelper
     end
 
     return h(n)
-      #raw = n.to_s
+    #raw = n.to_s
     #cooked = ''
     #while raw.length > 3
     #  cooked = ',' + raw[-3..-1] + cooked
@@ -51,6 +51,31 @@ module ApplicationHelper
     ArvadosBase::resource_class_for_uuid(attrvalue, opts)
   end
 
+  ##
+  # Returns HTML that links to the Arvados object specified in +attrvalue+
+  # Provides various output control and styling options.
+  #
+  # +attrvalue+ an Arvados model object or uuid
+  #
+  # +opts+ a set of flags to control output:
+  #
+  # [:link_text] the link text to use (may include HTML), overrides everything else
+  #
+  # [:friendly_name] whether to use the "friendly" name in the link text (by
+  # calling #friendly_link_name on the object), otherwise use the uuid
+  #
+  # [:with_class_name] prefix the link text with the class name of the model
+  #
+  # [:no_tags] disable tags in the link text (default is to show tags).
+  # Currently tags are only shown for Collections.
+  #
+  # [:thumbnail] if the object is a collection, show an image thumbnail if the
+  # collection consists of a single image file.
+  #
+  # [:no_link] don't create a link, just return the link text
+  #
+  # +style_opts+ additional HTML properties for the anchor tag, passed to link_to
+  #
   def link_to_if_arvados_object(attrvalue, opts={}, style_opts={})
     if (resource_class = resource_class_for_uuid(attrvalue, opts))
       link_uuid = attrvalue.is_a?(ArvadosBase) ? attrvalue.uuid : attrvalue
@@ -78,6 +103,15 @@ module ApplicationHelper
             link_name += ' <span class="label label-info">' + html_escape(tag.name) + '</span>'
           end
         end
+        if opts[:thumbnail] and resource_class == Collection
+          # add an image thumbnail if the collection consists of a single image file.
+          Collection.where(uuid: link_uuid).each do |c|
+            if c.files.length == 1 and CollectionsHelper::is_image c.files.first[1]
+              link_name += " "
+              link_name += image_tag "#{url_for c}/#{CollectionsHelper::file_path c.files.first}", style: "height: 4em; width: auto"
+            end
+          end
+        end
       end
       style_opts[:class] = (style_opts[:class] || '') + ' nowrap'
       if opts[:no_link]
@@ -86,6 +120,7 @@ module ApplicationHelper
         link_to raw(link_name), { controller: resource_class.to_s.tableize, action: 'show', id: link_uuid }, style_opts
       end
     else
+      # just return attrvalue if it is not recognizable as an Arvados object or uuid.
       attrvalue
     end
   end
@@ -183,27 +218,27 @@ module ApplicationHelper
       dn += '[value]'
     end
 
-    items = []
+    selectables = []
     attrtext = attrvalue
     if dataclass and dataclass.is_a? Class
       if attrvalue and !attrvalue.empty?
         Link.where(head_uuid: attrvalue, link_class: ["tag", "identifier"]).each do |tag|
           attrtext += " [#{tag.name}]"
         end
-        items.append({name: attrtext, uuid: attrvalue, type: dataclass.to_s})
+        selectables.append({name: attrtext, uuid: attrvalue, type: dataclass.to_s})
       end
       #dataclass.where(uuid: attrvalue).each do |item|
-      #  items.append({name: item.uuid, uuid: item.uuid, type: dataclass.to_s})
+      #  selectables.append({name: item.uuid, uuid: item.uuid, type: dataclass.to_s})
       #end
       itemuuids = []
       dataclass.limit(10).each do |item|
         itemuuids << item.uuid
-        items.append({name: item.uuid, uuid: item.uuid, type: dataclass.to_s})
+        selectables.append({name: item.uuid, uuid: item.uuid, type: dataclass.to_s})
       end
       Link.where(head_uuid: itemuuids, link_class: ["tag", "identifier"]).each do |tag|
-        items.each do |item|
-          if item.uuid == tag.head_uuid
-            item.name += ' [' + tag.name + ']'
+        selectables.each do |selectable|
+          if selectable['uuid'] == tag.head_uuid
+            selectable['name'] += ' [' + tag.name + ']'
           end
         end
       end
@@ -224,9 +259,9 @@ module ApplicationHelper
     }.merge(htmloptions)
 
     lt += raw("\n<script>")
-    
-    if items.any?
-      lt += raw("add_form_selection_sources(#{items.to_json});\n")
+
+    if selectables.any?
+      lt += raw("add_form_selection_sources(#{selectables.to_json});\n")
     end
 
     lt += raw("$('##{id}').editable({source: function() { return select_form_sources('#{dataclass}'); } });\n")