1 files changed, 61 insertions, 0 deletions
diff --git a/web_src/js/features/comp/TextExpander.js b/web_src/js/features/comp/TextExpander.js
new file mode 100644
index 00000000..128a2ddf
--- /dev/null
+++ b/web_src/js/features/comp/TextExpander.js
@@ -0,0 +1,61 @@
+import {matchEmoji, matchMention} from '../../utils/match.js';
+import {emojiString} from '../emoji.js';
+
+export function initTextExpander(expander) {
+  expander?.addEventListener('text-expander-change', ({detail: {key, provide, text}}) => {
+    if (key === ':') {
+      const matches = matchEmoji(text);
+      if (!matches.length) return provide({matched: false});
+
+      const ul = document.createElement('ul');
+      ul.classList.add('suggestions');
+      for (const name of matches) {
+        const emoji = emojiString(name);
+        const li = document.createElement('li');
+        li.setAttribute('role', 'option');
+        li.setAttribute('data-value', emoji);
+        li.textContent = `${emoji} ${name}`;
+        ul.append(li);
+      }
+
+      provide({matched: true, fragment: ul});
+    } else if (key === '@') {
+      const matches = matchMention(text);
+      if (!matches.length) return provide({matched: false});
+
+      const ul = document.createElement('ul');
+      ul.classList.add('suggestions');
+      for (const {value, name, fullname, avatar} of matches) {
+        const li = document.createElement('li');
+        li.setAttribute('role', 'option');
+        li.setAttribute('data-value', `${key}${value}`);
+
+        const img = document.createElement('img');
+        img.src = avatar;
+        li.append(img);
+
+        const nameSpan = document.createElement('span');
+        nameSpan.textContent = name;
+        li.append(nameSpan);
+
+        if (fullname && fullname.toLowerCase() !== name) {
+          const fullnameSpan = document.createElement('span');
+          fullnameSpan.classList.add('fullname');
+          fullnameSpan.textContent = fullname;
+          li.append(fullnameSpan);
+        }
+
+        ul.append(li);
+      }
+
+      provide({matched: true, fragment: ul});
+    }
+  });
+  expander?.addEventListener('text-expander-value', ({detail}) => {
+    if (detail?.item) {
+      // add a space after @mentions as it's likely the user wants one
+      const suffix = detail.key === '@' ? ' ' : '';
+      detail.value = `${detail.item.getAttribute('data-value')}${suffix}`;
+    }
+  });
+}