Delay opening context menu submenus on hover (#121)

* Delay opening context menu submenus on hover

* Delay the Seen submenu when its stats arrive on hover

Author: zweeltow

packages/ChatUI/Sources/ChatUI/MessageReadMenuItem.swift

@@ -325,7 +325,9 @@ public final class MessageReadMenuRowItem : AppMenuRowItem {
 
 
             self.item.submenu = menu
-            if let view = self.view, view.mouseInside() || self.isSelected {
+            if let view = self.view as? AppMenuRowView, view.mouseInside() {
+                view.presentSubmenuAfterDelay()
+            } else if self.isSelected {
                 self.interaction?.presentSubmenu(self.item)
             }
 

packages/TGUIKit/Sources/AppMenuRowItem.swift

@@ -371,6 +371,19 @@ open class AppMenuRowView: AppMenuBasicItemView {
     public let contentView = View()
 
     private let hoverDisposable = MetaDisposable()
+    private let submenuDisposable = MetaDisposable()
+    
+    public func presentSubmenuAfterDelay() {
+        submenuDisposable.set(delaySignal(0.157).start(completed: { [weak self] in
+            guard let self, let item = self.item as? AppMenuRowItem, self.containerView.controlState == .Hover else {
+                return
+            }
+            guard NSWindow.windowNumber(at: NSEvent.mouseLocation, belowWindowWithWindowNumber: 0) == self.window?.windowNumber else {
+                return
+            }
+            item.interaction?.presentSubmenu(item.item)
+        }))
+    }
 
     public required init(frame frameRect: NSRect) {
         super.init(frame: frameRect)
@@ -393,7 +406,11 @@ open class AppMenuRowView: AppMenuBasicItemView {
             guard let item = self?.item as? AppMenuRowItem, CheckWindow() else {
                 return
             }
-            item.interaction?.presentSubmenu(item.item)
+            guard item.item.submenu != nil else {
+                item.interaction?.presentSubmenu(item.item)
+                return
+            }
+            self?.presentSubmenuAfterDelay()
         }, for: .Hover)
 
 
@@ -430,6 +447,10 @@ open class AppMenuRowView: AppMenuBasicItemView {
                 self?.updateState(.Highlight)
             }
             self?.hoverDisposable.set(nil)
+            self?.submenuDisposable.set(nil)
+            if item.item.submenu != nil {
+                item.interaction?.presentSubmenu(item.item)
+            }
         }, for: .Highlight)
         containerView.set(handler: { [weak self] _ in
             if !CheckWindow() {
@@ -438,6 +459,7 @@ open class AppMenuRowView: AppMenuBasicItemView {
             self?.drawable?.updateState(.Normal)
             self?.updateState(.Normal)
             self?.hoverDisposable.set(nil)
+            self?.submenuDisposable.set(nil)
         }, for: .Normal)
         containerView.set(handler: { [weak self] _ in
             if !CheckWindow() {