Merge pull request #1729 from AllanWang/feature-scrolling-aware

1 files changed, 25 insertions, 0 deletions

diff --git a/app/src/web/ts/scroll_stop.ts b/app/src/web/ts/scroll_stop.ts
new file mode 100644
index 00000000..1ec6d30b
--- /dev/null
+++ b/app/src/web/ts/scroll_stop.ts
@@ -0,0 +1,25 @@
+// Listen when scrolling events stop
+(function () {
+    let scrollTimeout: number | undefined = undefined;
+    let scrolling: boolean = false;
+
+    window.addEventListener('scroll', function (event) {
+
+        if (!scrolling) {
+            Frost.setScrolling(true);
+            scrolling = true;
+        }
+
+        window.clearTimeout(scrollTimeout);
+
+        scrollTimeout = setTimeout(function () {
+            if (scrolling) {
+                Frost.setScrolling(false);
+                scrolling = false;
+            }
+        }, 600);
+        // For our specific use case, we want to release other features pretty far after scrolling stops
+        // For general scrolling use cases, the delta can be much smaller
+        // My assumption for context menus is that the long press is 500ms
+    }, false);
+}).call(undefined);
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