fix(ui): vertical swipes and drags scroll the list and text screens

The Forerunner 70 sends no page behaviour for a swipe on a custom view,
so the list and info screens only scrolled with the buttons. Swipes and
drags now scroll them directly; one gesture scrolls once even when the
device also sends the page behaviour, and a drag's release opens no row.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 35 insertions, 3 deletions

diff --git a/source/ui/ListDelegate.mc b/source/ui/ListDelegate.mc
index a7c8bf0..ca7cee9 100644
--- a/source/ui/ListDelegate.mc
+++ b/source/ui/ListDelegate.mc
@@ -14,14 +14,43 @@ class ListDelegate extends WatchUi.BehaviorDelegate {
     }
 
     function onNextPage() as Boolean {
-        AppState.activity();
-        _view.move(1);
+        if (!Gesture.recent()) {
+            AppState.activity();
+            _view.move(1);
+        }
         return true;
     }
 
     function onPreviousPage() as Boolean {
+        if (!Gesture.recent()) {
+            AppState.activity();
+            _view.move(-1);
+        }
+        return true;
+    }
+
+    // The Forerunner 70 sends no page behaviour for a vertical swipe, so the
+    // swipe and the drag scroll here; Gesture makes a gesture count once.
+    function onSwipe(event as WatchUi.SwipeEvent) as Boolean {
+        if (!Gesture.isVertical(event)) {
+            return BehaviorDelegate.onSwipe(event);
+        }
+        var step = Gesture.swipeStep(event);
+        if (step != 0) {
+            AppState.activity();
+            _view.move(step);
+        }
+        return true;
+    }
+
+    // A drag scrolls by the rows it covered, at least one.
+    function onDrag(event as WatchUi.DragEvent) as Boolean {
+        var step = Gesture.dragStep(event, _view.rowHeight());
+        if (step == 0) {
+            return false;
+        }
         AppState.activity();
-        _view.move(-1);
+        _view.move(step);
         return true;
     }
 
@@ -55,6 +84,9 @@ class ListDelegate extends WatchUi.BehaviorDelegate {
     // A tap opens the row under the finger.
     function onTap(event as WatchUi.ClickEvent) as Boolean {
         AppState.activity();
+        if (Gesture.tapIgnored()) {
+            return true;
+        }
         var index = _view.rowAt(event.getCoordinates()[1]);
         if (index < 0) {
             return true;