Add site config for IIIF viewer

Author: jimsafley

application/src/Controller/IiifViewerController.php

@@ -49,6 +49,9 @@ public function indexAction()
         if (isset($miradorConfigUser['window.sideBarOpen'])) {
             $miradorConfig['window']['sideBarOpen'] = $miradorConfigUser['window.sideBarOpen'];
         }
+        if (isset($miradorConfigUser['selectedTheme'])) {
+            $miradorConfig['selectedTheme'] = $miradorConfigUser['selectedTheme'];
+        }
 
         $view = new ViewModel;
         $view->setTerminal(true);

application/src/Form/SiteSettingsForm.php

@@ -33,6 +33,7 @@ public function init()
             'browse' => 'Browse', // @translate
             'show' => 'Show', // @translate
             'search' => 'Search', // @translate
+            'iiif_viewer' => 'IIIF viewer', // @translate
         ]);
 
         // o:assign_new_items element is a pseudo-setting that's ultimately set
@@ -424,6 +425,34 @@ public function init()
             ],
         ]);
 
+        // IIIF viewer section
+        $this->add([
+            'type' => 'checkbox',
+            'name' => 'iiif_viewer_sidebar',
+            'options' => [
+                'element_group' => 'iiif_viewer',
+                'label' => 'Show sidebar', // @translate
+            ],
+            'attributes' => [
+                'value' => $settings->get('iiif_viewer_sidebar', false),
+            ],
+        ]);
+        $this->add([
+            'type' => 'select',
+            'name' => 'iiif_viewer_theme',
+            'options' => [
+                'element_group' => 'iiif_viewer',
+                'label' => 'Theme', // @translate
+                'value_options' => [
+                    'light' => 'Light', // @translate
+                    'dark' => 'Dark', // @translate
+                ],
+            ],
+            'attributes' => [
+                'value' => $settings->get('iiif_viewer_theme'),
+            ],
+        ]);
+
         $addEvent = new Event('form.add_elements', $this);
         $this->getEventManager()->triggerEvent($addEvent);
 

application/src/Media/Renderer/IiifPresentation.php

@@ -8,11 +8,25 @@ class IiifPresentation implements RendererInterface
 {
     public function render(PhpRenderer $view, MediaRepresentation $media, array $options = [])
     {
+        $miradorConfig = [
+            'window.sideBarOpen' => false,
+            'selectedTheme' => 'light',
+        ];
+        if ($view->status()->isSiteRequest()) {
+            // Respect site settings for the IIIF viewer.
+            $miradorConfig['window.sideBarOpen'] = (bool) $view->siteSetting('iiif_viewer_sidebar', false);
+            switch ($view->siteSetting('iiif_viewer_theme', 'light')) {
+                case 'dark':
+                    $miradorConfig['selectedTheme'] = 'dark';
+                    break;
+                case 'light':
+                default:
+                $miradorConfig['selectedTheme'] = 'light';
+            }
+        }
         $query = [
             'url' => $media->source(),
-            'mirador_config' => json_encode([
-                'window.sideBarOpen' => false,
-            ]),
+            'mirador_config' => json_encode($miradorConfig),
         ];
         return $view->iiifViewer($query, $options);
     }