Enhance context menu scrolling behavior (#414)

public/css/litegraph.css

@@ -24,6 +24,16 @@
   box-shadow: 0 0 10px black !important;
   background-color: #2e2e2e !important;
   z-index: 10;
+  max-height: -webkit-fill-available;
+  overflow-y: auto;
+}
+
+/* Enable scrolling overflow in Firefox */
+@supports not (max-height: -webkit-fill-available) {
+  .litegraph.litecontextmenu {
+    max-height: 80vh;
+    overflow-y: scroll;
+  }
 }
 
 .litegraph.litecontextmenu.dark {

src/ContextMenu.ts

@@ -115,19 +115,6 @@ export class ContextMenu {
       true,
     )
 
-    function on_mouse_wheel(e: WheelEvent) {
-      const pos = parseInt(root.style.top)
-      root.style.top = (pos + e.deltaY * options.scroll_speed).toFixed() + "px"
-      e.preventDefault()
-      return true
-    }
-
-    if (!options.scroll_speed) {
-      options.scroll_speed = 0.1
-    }
-
-    root.addEventListener("wheel", on_mouse_wheel, true)
-
     this.root = root
 
     // title

src/interfaces.ts

@@ -269,6 +269,7 @@ export interface IContextMenuOptions extends IContextMenuBase {
   parentMenu?: ContextMenu
   event?: MouseEvent
   extra?: unknown
+  /** @deprecated Context menu scrolling is now controlled by the browser */
   scroll_speed?: number
   left?: number
   top?: number