From b537ca3938ca5f4c708dbd1f2b66e990639b22f4 Mon Sep 17 00:00:00 2001
From: Dominik Reh <rehdominik@gmail.com>
Date: Mon, 24 Oct 2022 17:01:43 +0200
Subject: [PATCH] Add support for PageUp/Down and Home/End scrolling Closes #34

---
 javascript/tagAutocomplete.js | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/javascript/tagAutocomplete.js b/javascript/tagAutocomplete.js
index 70e0080..3096011 100644
--- a/javascript/tagAutocomplete.js
+++ b/javascript/tagAutocomplete.js
@@ -468,7 +468,7 @@ function navigateInList(textArea, event) {
     // Return if the function is deactivated in the UI
     if (!acActive) return;
 
-    validKeys = ["ArrowUp", "ArrowDown", "Enter", "Tab", "Escape"];
+    validKeys = ["ArrowUp", "ArrowDown", "PageUp", "PageDown", "Home", "End", "Enter", "Tab", "Escape"];
     if (acConfig.useLeftRightArrowKeys)
         validKeys.push("ArrowLeft", "ArrowRight");
 
@@ -494,6 +494,26 @@ function navigateInList(textArea, event) {
                 selectedTag = (selectedTag + 1) % resultCount;
             }
             break;
+        case "PageUp":
+            if (selectedTag === null || selectedTag === 0) {
+                selectedTag = resultCount - 1;
+            } else {
+                selectedTag = (Math.max(selectedTag - 5, 0) + resultCount) % resultCount;
+            }
+            break;
+        case "PageDown":
+            if (selectedTag === null || selectedTag === resultCount - 1) {
+                selectedTag = 0;
+            } else {
+                selectedTag = Math.min(selectedTag + 5, resultCount - 1) % resultCount;
+            }
+            break;
+        case "Home":
+            selectedTag = 0;
+            break;
+        case "End":
+            selectedTag = resultCount - 1;
+            break;
         case "ArrowLeft":
             selectedTag = 0;
             break;