diff --git a/Display/ListView.swift b/Display/ListView.swift
index 63fa283..1ad0c30 100644
--- a/Display/ListView.swift
+++ b/Display/ListView.swift
@@ -3666,6 +3666,9 @@ open class ListView: ASDisplayNode, UIScrollViewAccessibilityDelegate, UIGesture
         self.highlightedItemIndex = nil
     }
     
+    open func updateHiglightPercent(_ percent: CGFloat) {
+    }
+    
     public func updateNodeHighlightsAnimated(_ animated: Bool) {
         let transition: ContainedViewLayoutTransition = animated ? .animated(duration: 0.35, curve: .spring) : .immediate
         self.updateOverlayHighlight(transition: transition)
diff --git a/Display/ListViewItemNode.swift b/Display/ListViewItemNode.swift
index 9793f6f..91b3c57 100644
--- a/Display/ListViewItemNode.swift
+++ b/Display/ListViewItemNode.swift
@@ -522,6 +522,10 @@ open class ListViewItemNode: ASDisplayNode {
     open func setHighlighted(_ highlighted: Bool, at point: CGPoint, animated: Bool) {
     }
     
+    open func setHighlightedPercent(_ percent: CGFloat) -> Bool {
+        return false
+    }
+    
     open func isReorderable(at point: CGPoint) -> Bool {
         return false
     }
diff --git a/Display/NavigationController.swift b/Display/NavigationController.swift
index 8412cef..e7df949 100644
--- a/Display/NavigationController.swift
+++ b/Display/NavigationController.swift
@@ -420,7 +420,8 @@ open class NavigationController: UINavigationController, ContainableController,
                 
                 if let _ = previousControllers.index(where: { $0.controller === record.controller }) {
                     //previousControllers[index].transition = .appearance
-                    let navigationTransitionCoordinator = NavigationTransitionCoordinator(transition: .Pop, container: self.controllerView.containerView, topView: previousController.view, topNavigationBar: (previousController as? ViewController)?.navigationBar, bottomView: record.controller.view, bottomNavigationBar: (record.controller as? ViewController)?.navigationBar)
+                    let transitionType: NavigationTransition = .Pop
+                    let navigationTransitionCoordinator = NavigationTransitionCoordinator(transition: transitionType, container: self.controllerView.containerView, topView: previousController.view, topNavigationBar: (previousController as? ViewController)?.navigationBar, bottomView: record.controller.view, bottomNavigationBar: (record.controller as? ViewController)?.navigationBar, alongsideTransition: (record.controller as? ViewController)?.navigationAlongsideTransition(type: transitionType))
                     self.navigationTransitionCoordinator = navigationTransitionCoordinator
                     
                     self.controllerView.inTransition = true
@@ -684,7 +685,8 @@ open class NavigationController: UINavigationController, ContainableController,
                         bottomController.displayNode.recursivelyEnsureDisplaySynchronously(true)
                     }
                     
-                    let navigationTransitionCoordinator = NavigationTransitionCoordinator(transition: .Pop, container: self.controllerView.containerView, topView: topView, topNavigationBar: (topController as? ViewController)?.navigationBar, bottomView: bottomView, bottomNavigationBar: (bottomController as? ViewController)?.navigationBar)
+                    let transitionType: NavigationTransition = .Pop
+                    let navigationTransitionCoordinator = NavigationTransitionCoordinator(transition: transitionType, container: self.controllerView.containerView, topView: topView, topNavigationBar: (topController as? ViewController)?.navigationBar, bottomView: bottomView, bottomNavigationBar: (bottomController as? ViewController)?.navigationBar, alongsideTransition: (bottomController as? ViewController)?.navigationAlongsideTransition(type: transitionType))
                     self.navigationTransitionCoordinator = navigationTransitionCoordinator
                 }
             case UIGestureRecognizerState.changed:
diff --git a/Display/NavigationTransitionCoordinator.swift b/Display/NavigationTransitionCoordinator.swift
index 809f669..39550a5 100644
--- a/Display/NavigationTransitionCoordinator.swift
+++ b/Display/NavigationTransitionCoordinator.swift
@@ -1,6 +1,6 @@
 import UIKit
 
-enum NavigationTransition {
+public enum NavigationTransition {
     case Push
     case Pop
 }
@@ -14,15 +14,8 @@ private func generateShadow() -> UIImage? {
 private let shadowImage = generateShadow()
 
 class NavigationTransitionCoordinator {
-    private var _progress: CGFloat = 0.0
-    var progress: CGFloat {
-        get {
-            return self._progress
-        }
-        set(value) {
-            self._progress = value
-            self.updateProgress()
-        }
+    var progress: CGFloat = 0 {
+        didSet { updateProgress() }
     }
     
     private let container: UIView
@@ -39,9 +32,11 @@ class NavigationTransitionCoordinator {
     
     private(set) var animatingCompletion = false
     private var currentCompletion: (() -> Void)?
+    private let alongsideTransition: ((CGFloat) -> ())?
     
-    init(transition: NavigationTransition, container: UIView, topView: UIView, topNavigationBar: NavigationBar?, bottomView: UIView, bottomNavigationBar: NavigationBar?) {
+    init(transition: NavigationTransition, container: UIView, topView: UIView, topNavigationBar: NavigationBar?, bottomView: UIView, bottomNavigationBar: NavigationBar?, alongsideTransition: ((CGFloat) ->())? = nil) {
         self.transition = transition
+        self.alongsideTransition = alongsideTransition
         self.container = container
         self.topView = topView
         switch transition {
@@ -86,6 +81,8 @@ class NavigationTransitionCoordinator {
     }
     
     func updateProgress() {
+        alongsideTransition?(progress)
+        
         let position: CGFloat
         switch self.transition {
             case .Push:
diff --git a/Display/TabBarController.swift b/Display/TabBarController.swift
index 900e286..d91957f 100644
--- a/Display/TabBarController.swift
+++ b/Display/TabBarController.swift
@@ -134,6 +134,10 @@ open class TabBarController: ViewController {
         return self.tabBarControllerNode.tabBarNode.sourceNodesForController(at: index)
     }
     
+    override open func navigationAlongsideTransition(type: NavigationTransition) -> ((CGFloat) -> ())? {
+        return currentController?.navigationAlongsideTransition(type: type)
+    }
+    
     override open func loadDisplayNode() {
         self.displayNode = TabBarControllerNode(theme: self.theme, navigationBar: self.navigationBar, itemSelected: { [weak self] index, longTap, itemNodes in
             if let strongSelf = self {
diff --git a/Display/ViewController.swift b/Display/ViewController.swift
index ec37788..583d5ca 100644
--- a/Display/ViewController.swift
+++ b/Display/ViewController.swift
@@ -186,6 +186,10 @@ open class ViewControllerPresentationArguments {
         }
     }
     
+    open func navigationAlongsideTransition(type: NavigationTransition) -> ((CGFloat) -> ())? {
+        return nil
+    }
+    
     private let _ready = Promise<Bool>(true)
     open var ready: Promise<Bool> {
         return self._ready