Fix: Dropdown in Settings

2026-06-13 09:19:56 -05:00 · 2026-04-20 11:35:41 -05:00
parent 044c93a790
commit e41e8011be
9 changed files with 122 additions and 60 deletions
@@ -0,0 +1 @@
+export * from "./selectPortal";
@@ -0,0 +1,40 @@
+import type { Attachment } from "svelte/attachments";
+
+/**
+ * {@attach selectPortal(triggerEl)}
+ *
+ * Moves the decorated element to <body> and positions it below `triggerEl`.
+ * The element stays reactive — Svelte still owns its DOM, we just re-parent it.
+ *
+ * The portalled menu element is stored on `triggerEl.__selectMenuEl` so that
+ * the outside-click guard in Settings.svelte can exclude it from dismissal.
+ */
+export function selectPortal(triggerEl: HTMLElement & { __selectMenuEl?: HTMLElement | null }): Attachment {
+  return (menuEl: HTMLElement) => {
+    // Position & move to body
+    function position() {
+      const r = triggerEl.getBoundingClientRect();
+      menuEl.style.position = "fixed";
+      menuEl.style.top      = `${r.bottom + 4}px`;
+      menuEl.style.left     = `${r.right - menuEl.offsetWidth}px`;
+      // clamp to viewport left edge
+      const left = parseFloat(menuEl.style.left);
+      if (left < 8) menuEl.style.left = "8px";
+    }
+
+    document.body.appendChild(menuEl);
+    triggerEl.__selectMenuEl = menuEl;
+    position();
+
+    // Reposition on scroll / resize while open
+    window.addEventListener("scroll", position, true);
+    window.addEventListener("resize", position);
+
+    return () => {
+      window.removeEventListener("scroll", position, true);
+      window.removeEventListener("resize", position);
+      triggerEl.__selectMenuEl = null;
+      menuEl.remove();
+    };
+  };
+}