adds iiif drag n drop to show page for Mirador viewed images

app/controllers/mirador_controller.rb

@@ -1,18 +1,18 @@
 ##
 # Mirador controller providing an iframeable Mirador
 class MiradorController < ApplicationController
-  before_action :set_manifest_url
-  layout :false
+  before_action :set_manifest
+  layout false
 
   def index; end
 
   private
 
-  def set_manifest_url
-    @manifest_url = mirador_params
+  def set_manifest
+    @manifest = mirador_params
   end
 
   def mirador_params
-    params.require(:manifest_url)
+    params.require(:manifest)
   end
 end

app/helpers/application_helper.rb

@@ -13,4 +13,12 @@ def document_collection_title(value:, **)
   def document_leaflet_map(document:, **)
     render_document_partial(document, 'show_leaflet_map_wrapper')
   end
+
+  ##
+  # @param [String] manifest
+  def iiif_drag_n_drop(manifest)
+    link_to mirador_index_path(manifest: manifest), class: 'iiif-dnd pull-right', data: { turbolinks: false } do
+      image_tag 'iiif-drag-n-drop.svg', width: '40px', alt: 'IIIF Drag-n-drop'
+    end
+  end
 end

app/views/mirador/index.html.erb

@@ -10,7 +10,7 @@
     "saveSession": false,
     "data": [
       {
-        "manifestUri": @manifest_url, "location": "Stanford University"
+        "manifestUri": @manifest, "location": "Stanford University"
       }
     ],
     "sidePanelOptions": {
@@ -20,7 +20,7 @@
     },
     "windowObjects": [
       {
-        "loadedManifest": @manifest_url,
+        "loadedManifest": @manifest,
         "displayLayout": false,
         "bottomPanelVisible": false,
         "annotationCreation": false,

app/views/viewers/_mirador.html.erb

@@ -3,7 +3,7 @@
 <% if exhibit_specific_manifest %>
   <iframe
     src="<%= mirador_index_path(
-      manifest_url: exhibit_specific_manifest
+      manifest: exhibit_specific_manifest
     ) %>"
     allowfullscreen="true"
     class="mirador-embed-wrapper"
@@ -13,4 +13,6 @@
     scrolling="no"
     width="100%"
   ></iframe>
+
+  <%= iiif_drag_n_drop(exhibit_specific_manifest) %>
 <% end %>

spec/views/viewers/_mirador.html.erb_spec.rb

@@ -48,4 +48,8 @@
       expect(rendered).to include CGI.escape('https://example.com/abc123')
     end
   end
+  it 'has the IIIF drag and drop' do
+    expect(rendered).to have_css 'a[href="/mirador?manifest=https%3A%2F%2Fpurl'\
+      '.stanford.edu%2Fbc853rd3116%3Fmanifest"]'
+  end
 end