From: Scott Worley <scottworley@scottworley.com>
Date: Wed, 26 Jan 2022 18:59:16 +0000 (-0800)
Subject: Factor out task offset logic
X-Git-Url: http://git.scottworley.com/vopamoi/commitdiff_plain/23be73e31d2e432bb56323937bab90fafba13b91?ds=inline

Factor out task offset logic
---

diff --git a/vopamoi.ts b/vopamoi.ts
index b90b895..3042add 100644
--- a/vopamoi.ts
+++ b/vopamoi.ts
@@ -125,10 +125,8 @@ const BrowserUI = {
     event.preventDefault();
   },
 
-  moveCursor: function (offset: number): boolean {
-    var initial_cursor = document.activeElement;
-    if (!initial_cursor) return false;
-    var cursor: Element | null = initial_cursor;
+  visibleTaskAtOffset(task: Element, offset: number): Element {
+    var cursor: Element | null = task;
     var valid_cursor = cursor;
     const increment = offset / Math.abs(offset);
     while (true) {
@@ -140,8 +138,15 @@ const BrowserUI = {
       }
       if (Math.abs(offset) < 0.5) break;
     }
-    if (valid_cursor !== initial_cursor && valid_cursor instanceof HTMLElement) {
-      valid_cursor.focus();
+    return valid_cursor;
+  },
+
+  moveCursor: function (offset: number): boolean {
+    const active = document.activeElement;
+    if (!active) return false;
+    const dest = this.visibleTaskAtOffset(active, offset);
+    if (dest !== active && dest instanceof HTMLElement) {
+      dest.focus();
       return true;
     }
     return false;