2 files changed, 125 insertions, 0 deletions
diff --git a/src/static/js/client/group-contributions-table.js b/src/static/js/client/group-contributions-table.js
new file mode 100644
index 00000000..3b79f84d
--- /dev/null
+++ b/src/static/js/client/group-contributions-table.js
@@ -0,0 +1,123 @@
+import {cssProp} from '../client-util.js';
+import {stitchArrays} from '../../shared-util/sugar.js';
+
+export const info = {
+  id: 'groupContributionsInfo',
+
+  tables: null,
+  lists: null,
+
+  groupLinks: null,
+  groupLinkDirectories: null,
+
+  chunkDTs: null,
+  chunkDDs: null,
+  chunkGroupDirectories: null,
+};
+
+export function getPageReferences() {
+  if (document.documentElement.dataset.urlKey !== 'localized.artist') {
+    return;
+  }
+
+  info.tables =
+    Array.from(document.querySelectorAll('.group-contributions-table'));
+
+  info.lists =
+    info.tables
+      .map(table => table.closest('dl'));
+
+  info.groupLinks =
+    info.tables
+      .map(table => Array.from(table.querySelectorAll('td.group a')));
+
+  info.groupLinkDirectories =
+    info.groupLinks
+      .map(links => links
+        .map(link => link.dataset.directory));
+
+  info.chunkDTs =
+    info.lists
+      .map(list => Array.from(list.querySelectorAll('dt')));
+
+  info.chunkDDs =
+    info.chunkDTs
+      .map(dts => dts
+        .map(dt => dt.nextElementSibling)
+        .map(el => el.tagName === 'DD' ? el : null));
+
+  info.chunkGroupDirectories =
+    info.chunkDTs
+      .map(dts => dts
+        .map(dt => dt.dataset.groups)
+        .map(string => string ? string.split(' ') : []));
+}
+
+export function addPageListeners() {
+  if (!info.tables) return;
+
+  stitchArrays({
+    table: info.tables,
+    groupLinks: info.groupLinks,
+  }).forEach(({table, groupLinks}) => {
+      groupLinks.forEach(groupLink => {
+        groupLink.addEventListener('click', domEvent => {
+          domEvent.preventDefault();
+          handleGroupLinkClicked(table, groupLink);
+        });
+      });
+    });
+}
+
+function handleGroupLinkClicked(table, groupLink) {
+  const i = info.tables.indexOf(table);
+
+  groupLink.classList.toggle('selected');
+
+  // For now, just disable having more than one link selected at a time.
+  for (const link of info.groupLinks[i]) {
+    if (link !== groupLink) {
+      link.classList.remove('selected');
+    }
+  }
+
+  updateVisibleChunks(table);
+}
+
+function updateVisibleChunks(table) {
+  const i = info.tables.indexOf(table);
+
+  const selectedGroupDirectories =
+    stitchArrays({
+      link: info.groupLinks[i],
+      directory: info.groupLinkDirectories[i],
+    }).filter(({link}) => link.classList.contains('selected'))
+      .map(({directory}) => directory);
+
+  stitchArrays({
+    chunkDT: info.chunkDTs[i],
+    chunkDD: info.chunkDDs[i],
+    chunkGroupDirectories: info.chunkGroupDirectories[i],
+  }).forEach(({
+      chunkDT,
+      chunkDD,
+      chunkGroupDirectories,
+    }) => {
+      if (selectedGroupDirectories.length >= 1) {
+        const included =
+          chunkGroupDirectories
+            .some(d => selectedGroupDirectories.includes(d));
+
+        if (included) {
+          cssProp(chunkDT, 'display', null);
+          cssProp(chunkDD, 'display', null);
+        } else {
+          cssProp(chunkDT, 'display', 'none');
+          cssProp(chunkDD, 'display', 'none');
+        }
+      } else {
+        cssProp(chunkDT, 'display', null);
+        cssProp(chunkDD, 'display', null);
+      }
+    });
+}
diff --git a/src/static/js/client/index.js b/src/static/js/client/index.js
index a17f7dab..a438d6d8 100644
--- a/src/static/js/client/index.js
+++ b/src/static/js/client/index.js
@@ -8,6 +8,7 @@ import * as datetimestampTooltipModule from './datetimestamp-tooltip.js';
 import * as draggedLinkModule from './dragged-link.js';
 import * as expandableGridSectionModule from './expandable-grid-section.js';
 import * as galleryStyleSelectorModule from './gallery-style-selector.js';
+import * as groupContributionsTableModule from './group-contributions-table.js';
 import * as hashLinkModule from './hash-link.js';
 import * as hoverableTooltipModule from './hoverable-tooltip.js';
 import * as imageOverlayModule from './image-overlay.js';
@@ -33,6 +34,7 @@ export const modules = [
   draggedLinkModule,
   expandableGridSectionModule,
   galleryStyleSelectorModule,
+  groupContributionsTableModule,
   hashLinkModule,
   hoverableTooltipModule,
   imageOverlayModule,