Merge commit '7621e2f8dec938cf48181c8b10afc9b01f444e68' into beta

submodules/ItemListUI/Sources/ItemListControllerSearch.swift

@@ -0,0 +1,41 @@
+import Foundation
+import UIKit
+import AsyncDisplayKit
+import Display
+
+public protocol ItemListControllerSearchNavigationContentNode {
+    func activate()
+    func deactivate()
+    
+    func setQueryUpdated(_ f: @escaping (String) -> Void)
+}
+
+public protocol ItemListControllerSearch {
+    func isEqual(to: ItemListControllerSearch) -> Bool
+    func titleContentNode(current: (NavigationBarContentNode & ItemListControllerSearchNavigationContentNode)?) -> (NavigationBarContentNode & ItemListControllerSearchNavigationContentNode)?
+    func node(current: ItemListControllerSearchNode?, titleContentNode: (NavigationBarContentNode & ItemListControllerSearchNavigationContentNode)?) -> ItemListControllerSearchNode
+}
+
+open class ItemListControllerSearchNode: ASDisplayNode {
+    open var addedUnderNavigationBar: Bool = false
+    
+    open func activate() {
+        self.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.2, timingFunction: CAMediaTimingFunctionName.easeInEaseOut.rawValue)
+    }
+    
+    open func deactivate() {
+        self.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.2, timingFunction: CAMediaTimingFunctionName.easeInEaseOut.rawValue, removeOnCompletion: false, completion: { [weak self] _ in
+            self?.removeFromSupernode()
+        })
+    }
+    
+    open func scrollToTop() {
+    }
+    
+    open func queryUpdated(_ query: String) {
+    }
+    
+    open func updateLayout(layout: ContainerViewLayout, navigationBarHeight: CGFloat, transition: ContainedViewLayoutTransition) {
+    }
+}
+