1 files changed, 92 insertions, 0 deletions
diff --git a/src/content/dependencies/generateExpandableGallerySection.js b/src/content/dependencies/generateExpandableGallerySection.js
new file mode 100644
index 00000000..122ca4b1
--- /dev/null
+++ b/src/content/dependencies/generateExpandableGallerySection.js
@@ -0,0 +1,92 @@
+export default {
+  contentDependencies: ['generateContentHeading'],
+  extraDependencies: ['html', 'language'],
+
+  relations: (relation) => ({
+    contentHeading:
+      relation('generateContentHeading'),
+  }),
+
+  slots: {
+    title: {
+      type: 'html',
+      mutable: false,
+    },
+
+    contentAboveCut: {
+      type: 'html',
+      mutable: false,
+    },
+
+    contentBelowCut: {
+      type: 'html',
+      mutable: false,
+    },
+
+    caption: {
+      type: 'html',
+      mutable: false,
+    },
+
+    expandCue: {
+      type: 'html',
+      mutable: false,
+    },
+
+    collapseCue: {
+      type: 'html',
+      mutable: false,
+    },
+  },
+
+  generate: (relations, slots, {html, language}) =>
+    html.tag('section', {class: 'expandable-gallery-section'}, [
+      relations.contentHeading.slots({
+        tag: 'h2',
+        title: slots.title,
+      }),
+
+      html.tag('div', {class: 'section-content-above-cut'},
+        {[html.onlyIfContent]: true},
+
+        slots.contentAboveCut),
+
+      html.tag('div', {class: 'section-content-below-cut'},
+        {[html.onlyIfContent]: true},
+
+        !html.isBlank(slots.contentBelowCut) &&
+          {style: 'display: none'},
+
+        slots.contentBelowCut),
+
+      html.tag('div', {class: 'section-expando'},
+        {[html.onlyIfSiblings]: true},
+
+        html.tag('div', {class: 'section-expando-content'},
+          {[html.joinChildren]: html.tag('br')},
+
+          [
+            html.tag('span', {class: 'section-caption'},
+              slots.caption),
+
+            !html.isBlank(slots.contentBelowCut) &&
+              language.$('misc.coverGrid.expandCollapseCue', {
+                cue:
+                  html.tag('a', {class: 'section-expando-toggle'},
+                    {href: '#'},
+
+                    {[html.joinChildren]: ''},
+                    {[html.noEdgeWhitespace]: true},
+
+                    [
+                      html.tag('span', {class: 'section-expand-cue'},
+                        slots.expandCue),
+
+                      html.tag('span', {class: 'section-collapse-cue'},
+                        {style: 'display: none'},
+                        slots.collapseCue),
+                    ]),
+              }),
+          ])),
+    ]),
+};