Swiftgram/submodules/TelegramUI/Sources/ChatControllerNode.swift

import Foundation
import UIKit
import AsyncDisplayKit
import Postbox
import SwiftSignalKit
import Display
import TelegramCore
import SyncCore
import TelegramPresentationData
import TelegramUIPreferences
import TextFormat
import AccountContext
import TelegramNotices
import ReactionSelectionNode
import TelegramUniversalVideoContent
import ChatInterfaceState
import FastBlur

final class VideoNavigationControllerDropContentItem: NavigationControllerDropContentItem {
    let itemNode: OverlayMediaItemNode
    
    init(itemNode: OverlayMediaItemNode) {
        self.itemNode = itemNode
    }
}

private final class ChatControllerNodeView: UITracingLayerView, WindowInputAccessoryHeightProvider {
    var inputAccessoryHeight: (() -> CGFloat)?
    var hitTestImpl: ((CGPoint, UIEvent?) -> UIView?)?
    
    func getWindowInputAccessoryHeight() -> CGFloat {
        return self.inputAccessoryHeight?() ?? 0.0
    }
    
    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
        if let result = self.hitTestImpl?(point, event) {
            return result
        }
        return super.hitTest(point, with: event)
    }
}

private final class ScrollContainerNode: ASScrollNode {
    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
        if super.hitTest(point, with: event) == self.view {
            return nil
        }
        
        return super.hitTest(point, with: event)
    }
}

private struct ChatControllerNodeDerivedLayoutState {
    var inputContextPanelsFrame: CGRect
    var inputContextPanelsOverMainPanelFrame: CGRect
    var inputNodeHeight: CGFloat?
    var upperInputPositionBound: CGFloat?
}

private final class ChatEmbeddedTitleContentNode: ASDisplayNode {
    private let context: AccountContext
    private let backgroundNode: ASDisplayNode
    private let statusBarBackgroundNode: ASDisplayNode
    private let videoNode: OverlayUniversalVideoNode
    private let disableInternalAnimationIn: Bool
    private let isUIHiddenUpdated: () -> Void
    private let unembedWhenPortrait: (OverlayMediaItemNode) -> Bool
    
    private var validLayout: (CGSize, CGFloat, CGFloat, CGFloat)?
    
    private let dismissed: () -> Void
    private let interactiveExtensionUpdated: (ContainedViewLayoutTransition) -> Void
    
    private(set) var interactiveExtension: CGFloat = 0.0
    private var freezeInteractiveExtension = false
    
    private(set) var isUIHidden: Bool = false
    
    var unembedOnLeave: Bool = true
    
    init(context: AccountContext, videoNode: OverlayUniversalVideoNode, disableInternalAnimationIn: Bool, interactiveExtensionUpdated: @escaping (ContainedViewLayoutTransition) -> Void, dismissed: @escaping () -> Void, isUIHiddenUpdated: @escaping () -> Void, unembedWhenPortrait: @escaping (OverlayMediaItemNode) -> Bool) {
        self.dismissed = dismissed
        self.interactiveExtensionUpdated = interactiveExtensionUpdated
        self.isUIHiddenUpdated = isUIHiddenUpdated
        self.unembedWhenPortrait = unembedWhenPortrait
        self.disableInternalAnimationIn = disableInternalAnimationIn
        
        self.context = context
        
        self.backgroundNode = ASDisplayNode()
        self.backgroundNode.backgroundColor = .black
        
        self.statusBarBackgroundNode = ASDisplayNode()
        self.statusBarBackgroundNode.backgroundColor = .black
        
        self.videoNode = videoNode
        
        super.init()
        
        self.clipsToBounds = true
        
        self.addSubnode(self.backgroundNode)
        self.addSubnode(self.statusBarBackgroundNode)
        
        self.view.addGestureRecognizer(UIPanGestureRecognizer(target: self, action: #selector(self.panGesture(_:))))
        
        self.videoNode.controlsAreShowingUpdated = { [weak self] value in
            guard let strongSelf = self else {
                return
            }
            strongSelf.isUIHidden = !value
            strongSelf.isUIHiddenUpdated()
        }
    }
    
    @objc private func panGesture(_ recognizer: UIPanGestureRecognizer) {
        switch recognizer.state {
        case .began:
            break
        case .changed:
            let translation = recognizer.translation(in: self.view)
            
            func rubberBandingOffset(offset: CGFloat, bandingStart: CGFloat) -> CGFloat {
                let bandedOffset = offset - bandingStart
                let range: CGFloat = 600.0
                let coefficient: CGFloat = 0.4
                return bandingStart + (1.0 - (1.0 / ((bandedOffset * coefficient / range) + 1.0))) * range
            }
            
            let offset = rubberBandingOffset(offset: translation.y, bandingStart: 0.0)
            
            if translation.y > 80.0 {
                self.freezeInteractiveExtension = true
                self.expandIntoPiP()
            } else {
                self.interactiveExtension = max(0.0, offset)
                self.interactiveExtensionUpdated(.immediate)
            }
        case .cancelled, .ended:
            if !freezeInteractiveExtension {
                self.interactiveExtension = 0.0
                self.interactiveExtensionUpdated(.animated(duration: 0.3, curve: .spring))
            }
        default:
            break
        }
    }
    
    func calculateHeight(width: CGFloat) -> CGFloat {
        return self.videoNode.content.dimensions.aspectFilled(CGSize(width: width, height: 16.0)).height
    }
    
    func updateLayout(size: CGSize, actualHeight: CGFloat, topInset: CGFloat, interactiveExtension: CGFloat, transition: ContainedViewLayoutTransition, transitionSurface: ASDisplayNode?, navigationBar: NavigationBar?) {
        let isFirstTime = self.validLayout == nil
        
        self.validLayout = (size, actualHeight, topInset, interactiveExtension)
        let videoSize = CGSize(width: size.width, height: actualHeight)
        
        let videoFrame = CGRect(origin: CGPoint(x: 0.0, y: topInset + interactiveExtension + floor((size.height - actualHeight) / 2.0)), size: CGSize(width: videoSize.width, height: videoSize.height - topInset - interactiveExtension))
        
        if isFirstTime, let transitionSurface = transitionSurface {
            let sourceFrame = self.videoNode.view.convert(self.videoNode.bounds, to: transitionSurface.view)
            let targetFrame = self.view.convert(videoFrame, to: transitionSurface.view)
            
            var navigationBarCopy: UIView?
            var navigationBarContainer: UIView?
            var nodeTransition = transition
            if self.disableInternalAnimationIn {
                nodeTransition = .immediate
            } else {
                self.context.sharedContext.mediaManager.setOverlayVideoNode(nil)
                transitionSurface.addSubnode(self.videoNode)
                
                navigationBarCopy = navigationBar?.view.snapshotView(afterScreenUpdates: true)
                let navigationBarContainerValue = UIView()
                navigationBarContainer = navigationBarContainerValue
                navigationBarContainerValue.frame = targetFrame
                navigationBarContainerValue.clipsToBounds = true
                transitionSurface.view.addSubview(navigationBarContainerValue)
            }
            
            if !self.disableInternalAnimationIn {
                navigationBarContainer?.layer.animateFrame(from: sourceFrame, to: targetFrame, duration: 0.25, timingFunction: kCAMediaTimingFunctionSpring)
            }
            
            if !self.disableInternalAnimationIn {
                if let navigationBar = navigationBar, let navigationBarCopy = navigationBarCopy {
                    let navigationFrame = navigationBar.view.convert(navigationBar.bounds, to: transitionSurface.view)
                    let navigationSourceFrame = navigationFrame.offsetBy(dx: -sourceFrame.minX, dy: -sourceFrame.minY)
                    let navigationTargetFrame = navigationFrame.offsetBy(dx: -targetFrame.minX, dy: -targetFrame.minY)
                    navigationBarCopy.frame = navigationTargetFrame
                    navigationBarContainer?.addSubview(navigationBarCopy)
                    
                    navigationBarCopy.layer.animateFrame(from: navigationSourceFrame, to: navigationTargetFrame, duration: 0.25, timingFunction: kCAMediaTimingFunctionSpring)
                    navigationBarCopy.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.25, timingFunction: kCAMediaTimingFunctionSpring)
                }
            }
            
            self.videoNode.updateRoundCorners(false, transition: nodeTransition)
            if !self.disableInternalAnimationIn {
                self.videoNode.showControls()
            }
            
            self.videoNode.updateLayout(targetFrame.size, transition: nodeTransition)
            self.videoNode.frame = targetFrame
            if self.disableInternalAnimationIn {
                self.insertSubnode(self.videoNode, belowSubnode: self.statusBarBackgroundNode)
            } else {
                self.videoNode.layer.animateFrame(from: sourceFrame, to: targetFrame, duration: 0.25, timingFunction: kCAMediaTimingFunctionSpring, completion: { [weak self] _ in
                    guard let strongSelf = self else {
                        return
                    }
                    navigationBarContainer?.removeFromSuperview()
                    strongSelf.insertSubnode(strongSelf.videoNode, belowSubnode: strongSelf.statusBarBackgroundNode)
                    if let (size, actualHeight, topInset, interactiveExtension) = strongSelf.validLayout {
                        strongSelf.updateLayout(size: size, actualHeight: actualHeight, topInset: topInset, interactiveExtension: interactiveExtension, transition: .immediate, transitionSurface: nil, navigationBar: nil)
                    }
                })
                self.backgroundNode.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.2)
            }
         
            self.videoNode.customClose = { [weak self] in
                guard let strongSelf = self else {
                    return
                }
                strongSelf.videoNode.customClose = nil
                strongSelf.dismissed()
            }
        }
        transition.updateFrame(node: self.backgroundNode, frame: CGRect(origin: CGPoint(), size: size))
        transition.updateFrame(node: self.statusBarBackgroundNode, frame: CGRect(origin: CGPoint(), size: CGSize(width: size.width, height: topInset)))
        
        if self.videoNode.supernode == self {
            self.videoNode.layer.transform = CATransform3DIdentity
            transition.updateFrame(node: self.videoNode, frame: videoFrame)
        }
    }
    
    func expand(intoLandscape: Bool) {
        if intoLandscape {
            let unembedWhenPortrait = self.unembedWhenPortrait
            self.videoNode.customUnembedWhenPortrait = { videoNode in
                unembedWhenPortrait(videoNode)
            }
        }
        self.videoNode.expand()
    }
    
    func expandIntoPiP() {
        let transition: ContainedViewLayoutTransition = .animated(duration: 0.25, curve: .spring)
        
        self.videoNode.customExpand = nil
        self.videoNode.customClose = nil
        
        let previousFrame = self.videoNode.frame
        self.context.sharedContext.mediaManager.setOverlayVideoNode(self.videoNode)
        self.videoNode.updateRoundCorners(true, transition: transition)
        
        if let targetSuperview = self.videoNode.view.superview {
            let sourceFrame = self.view.convert(previousFrame, to: targetSuperview)
            let targetFrame = self.videoNode.frame
            self.videoNode.frame = sourceFrame
            self.videoNode.updateLayout(sourceFrame.size, transition: .immediate)
            
            transition.updateFrame(node: self.videoNode, frame: targetFrame)
            self.videoNode.updateLayout(targetFrame.size, transition: transition)
        }
        
        self.dismissed()
    }
}

enum ChatEmbeddedTitlePeekContent: Equatable {
    case none
    case peek
}

class ChatControllerNode: ASDisplayNode, UIScrollViewDelegate {
    let context: AccountContext
    let chatLocation: ChatLocation
    let controllerInteraction: ChatControllerInteraction
    private weak var controller: ChatControllerImpl?
    
    let navigationBar: NavigationBar?
    private let navigationBarBackroundNode: ASDisplayNode
    private let navigationBarSeparatorNode: ASDisplayNode
    
    private var backgroundEffectNode: ASDisplayNode?
    private var containerBackgroundNode: ASImageNode?
    private var scrollContainerNode: ScrollContainerNode?
    private var containerNode: ASDisplayNode?
    private var overlayNavigationBar: ChatOverlayNavigationBar?
    
    var peerView: PeerView? {
        didSet {
            self.overlayNavigationBar?.peerView = self.peerView
        }
    }
    
    let backgroundNode: WallpaperBackgroundNode
    let backgroundImageDisposable = MetaDisposable()
    let historyNode: ChatHistoryListNode
    var blurredHistoryNode: ASImageNode?
    let reactionContainerNode: ReactionSelectionParentNode
    let historyNodeContainer: ASDisplayNode
    let loadingNode: ChatLoadingNode
    private var emptyNode: ChatEmptyNode?
    private var validEmptyNodeLayout: (CGSize, UIEdgeInsets)?
    var restrictedNode: ChatRecentActionsEmptyNode?
    
    private var validLayout: (ContainerViewLayout, CGFloat)?
    private var visibleAreaInset = UIEdgeInsets()
    
    private var searchNavigationNode: ChatSearchNavigationContentNode?
    
    private let inputPanelBackgroundNode: ASDisplayNode
    private let inputPanelBackgroundSeparatorNode: ASDisplayNode
    private var plainInputSeparatorAlpha: CGFloat?
    private var usePlainInputSeparator: Bool
    
    private let titleAccessoryPanelContainer: ChatControllerTitlePanelNodeContainer
    private var titleAccessoryPanelNode: ChatTitleAccessoryPanelNode?
    
    private var inputPanelNode: ChatInputPanelNode?
    private weak var currentDismissedInputPanelNode: ASDisplayNode?
    private var secondaryInputPanelNode: ChatInputPanelNode?
    private var accessoryPanelNode: AccessoryPanelNode?
    private var inputContextPanelNode: ChatInputContextPanelNode?
    private let inputContextPanelContainer: ChatControllerTitlePanelNodeContainer
    private var overlayContextPanelNode: ChatInputContextPanelNode?
    
    private var inputNode: ChatInputNode?
    private var disappearingNode: ChatInputNode?
    
    private var textInputPanelNode: ChatTextInputPanelNode?
    private var inputMediaNode: ChatMediaInputNode?
    
    let navigateButtons: ChatHistoryNavigationButtons
    
    private var ignoreUpdateHeight = false
    
    private var animateInAsOverlayCompletion: (() -> Void)?
    private var dismissAsOverlayCompletion: (() -> Void)?
    private var dismissedAsOverlay = false
    private var scheduledAnimateInAsOverlayFromNode: ASDisplayNode?
    private var dismissAsOverlayLayout: ContainerViewLayout?
    
    private var hapticFeedback: HapticFeedback?
    private var scrollViewDismissStatus = false
    
    var chatPresentationInterfaceState: ChatPresentationInterfaceState
    var automaticMediaDownloadSettings: MediaAutoDownloadSettings
    
    private var interactiveEmojis: InteractiveEmojiConfiguration?
    private var interactiveEmojisDisposable: Disposable?
    
    private let selectedMessagesPromise = Promise<Set<MessageId>?>(nil)
    var selectedMessages: Set<MessageId>? {
        didSet {
            if self.selectedMessages != oldValue {
                self.selectedMessagesPromise.set(.single(self.selectedMessages))
            }
        }
    }
    
    private let updatingMessageMediaPromise = Promise<[MessageId: ChatUpdatingMessageMedia]>([:])
    var updatingMessageMedia: [MessageId: ChatUpdatingMessageMedia] = [:] {
        didSet {
            if self.updatingMessageMedia != oldValue {
                self.updatingMessageMediaPromise.set(.single(self.updatingMessageMedia))
            }
        }
    }
    
    var requestUpdateChatInterfaceState: (Bool, Bool, (ChatInterfaceState) -> ChatInterfaceState) -> Void = { _, _, _ in }
    var requestUpdateInterfaceState: (ContainedViewLayoutTransition, Bool, (ChatPresentationInterfaceState) -> ChatPresentationInterfaceState) -> Void = { _, _, _ in }
    var sendMessages: ([EnqueueMessage], Bool?, Int32?, Bool) -> Void = { _, _, _, _ in }
    var displayAttachmentMenu: () -> Void = { }
    var paste: (ChatTextInputPanelPasteData) -> Void = { _ in }
    var updateTypingActivity: (Bool) -> Void = { _ in }
    var dismissUrlPreview: () -> Void = { }
    var setupSendActionOnViewUpdate: (@escaping () -> Void) -> Void = { _ in }
    var requestLayout: (ContainedViewLayoutTransition) -> Void = { _ in }
    var dismissAsOverlay: () -> Void = { }
    
    var interfaceInteraction: ChatPanelInterfaceInteraction?
    
    private var messageActionSheetController: (ChatMessageActionSheetController, UInt32)?
    private var messageActionSheetControllerAdditionalInset: CGFloat?
    private var messageActionSheetTopDimNode: ASDisplayNode?
    private var messageActionSheetBottomDimNode: ASDisplayNode?
    
    private var expandedInputDimNode: ASDisplayNode?
    
    private var dropDimNode: ASDisplayNode?
    
    private var containerLayoutAndNavigationBarHeight: (ContainerViewLayout, CGFloat)?
    
    private var scheduledLayoutTransitionRequestId: Int = 0
    private var scheduledLayoutTransitionRequest: (Int, ContainedViewLayoutTransition)?
    
    private var panRecognizer: WindowPanRecognizer?
    private let keyboardGestureRecognizerDelegate = WindowKeyboardGestureRecognizerDelegate()
    private var upperInputPositionBound: CGFloat?
    private var keyboardGestureBeginLocation: CGPoint?
    private var keyboardGestureAccessoryHeight: CGFloat?
    
    private var derivedLayoutState: ChatControllerNodeDerivedLayoutState?
    
    private var isLoadingValue: Bool = false
    private func updateIsLoading(isLoading: Bool, animated: Bool) {
        if isLoading != self.isLoadingValue {
            self.isLoadingValue = isLoading
            if isLoading {
                self.historyNodeContainer.supernode?.insertSubnode(self.loadingNode, belowSubnode: self.historyNodeContainer)
                self.loadingNode.layer.removeAllAnimations()
                self.loadingNode.alpha = 1.0
                if animated {
                    self.loadingNode.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.3)
                }
            } else {
                self.loadingNode.alpha = 0.0
                if animated {
                    self.loadingNode.layer.animateScale(from: 1.0, to: 0.1, duration: 0.3, removeOnCompletion: false)
                    self.loadingNode.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.3, completion: { [weak self] completed in
                        if let strongSelf = self {
                            strongSelf.loadingNode.layer.removeAllAnimations()
                            if completed {
                                strongSelf.loadingNode.removeFromSupernode()
                            }
                        }
                    })
                } else {
                    self.loadingNode.removeFromSupernode()
                }
            }
        }
    }
    
    private var lastSendTimestamp = 0.0
    
    private var openStickersDisposable: Disposable?
    private var displayVideoUnmuteTipDisposable: Disposable?
    
    private var onLayoutCompletions: [(ContainedViewLayoutTransition) -> Void] = []
    
    private var embeddedTitlePeekContent: ChatEmbeddedTitlePeekContent = .none
    private var embeddedTitleContentNode: ChatEmbeddedTitleContentNode?
    private var dismissedEmbeddedTitleContentNode: ChatEmbeddedTitleContentNode?
    var hasEmbeddedTitleContent: Bool {
        return self.embeddedTitleContentNode != nil
    }
    private var didProcessExperimentalEmbedUrl: String?
    
    init(context: AccountContext, chatLocation: ChatLocation, chatLocationContextHolder: Atomic<ChatLocationContextHolder?>, subject: ChatControllerSubject?, controllerInteraction: ChatControllerInteraction, chatPresentationInterfaceState: ChatPresentationInterfaceState, automaticMediaDownloadSettings: MediaAutoDownloadSettings, navigationBar: NavigationBar?, controller: ChatControllerImpl?) {
        self.context = context
        self.chatLocation = chatLocation
        self.controllerInteraction = controllerInteraction
        self.chatPresentationInterfaceState = chatPresentationInterfaceState
        self.automaticMediaDownloadSettings = automaticMediaDownloadSettings
        self.navigationBar = navigationBar
        self.controller = controller
        
        self.backgroundNode = WallpaperBackgroundNode()
        self.backgroundNode.displaysAsynchronously = false
        
        self.titleAccessoryPanelContainer = ChatControllerTitlePanelNodeContainer()
        self.titleAccessoryPanelContainer.clipsToBounds = true
        
        self.inputContextPanelContainer = ChatControllerTitlePanelNodeContainer()
        
        self.historyNode = ChatHistoryListNode(context: context, chatLocation: chatLocation, chatLocationContextHolder: chatLocationContextHolder, tagMask: nil, subject: subject, controllerInteraction: controllerInteraction, selectedMessages: self.selectedMessagesPromise.get())
        self.historyNode.rotated = true
        self.historyNodeContainer = ASDisplayNode()
        self.historyNodeContainer.addSubnode(self.historyNode)
        
        self.reactionContainerNode = ReactionSelectionParentNode(account: context.account, theme: chatPresentationInterfaceState.theme)
        
        self.loadingNode = ChatLoadingNode(theme: self.chatPresentationInterfaceState.theme, chatWallpaper: self.chatPresentationInterfaceState.chatWallpaper, bubbleCorners: self.chatPresentationInterfaceState.bubbleCorners)
        
        self.inputPanelBackgroundNode = ASDisplayNode()
        if case let .color(color) = self.chatPresentationInterfaceState.chatWallpaper, UIColor(rgb: color).isEqual(self.chatPresentationInterfaceState.theme.chat.inputPanel.panelBackgroundColorNoWallpaper) {
            self.inputPanelBackgroundNode.backgroundColor = self.chatPresentationInterfaceState.theme.chat.inputPanel.panelBackgroundColorNoWallpaper
            self.usePlainInputSeparator = true
        } else {
            self.inputPanelBackgroundNode.backgroundColor = self.chatPresentationInterfaceState.theme.chat.inputPanel.panelBackgroundColor
            self.usePlainInputSeparator = false
            self.plainInputSeparatorAlpha = nil
        }
        self.inputPanelBackgroundNode.isLayerBacked = true
        
        self.inputPanelBackgroundSeparatorNode = ASDisplayNode()
        self.inputPanelBackgroundSeparatorNode.backgroundColor = self.chatPresentationInterfaceState.theme.chat.inputPanel.panelSeparatorColor
        self.inputPanelBackgroundSeparatorNode.isLayerBacked = true
        
        self.navigateButtons = ChatHistoryNavigationButtons(theme: self.chatPresentationInterfaceState.theme, dateTimeFormat: self.chatPresentationInterfaceState.dateTimeFormat)
        self.navigateButtons.accessibilityElementsHidden = true
        
        self.navigationBarBackroundNode = ASDisplayNode()
        self.navigationBarBackroundNode.backgroundColor = chatPresentationInterfaceState.theme.rootController.navigationBar.backgroundColor
        
        self.navigationBarSeparatorNode = ASDisplayNode()
        self.navigationBarSeparatorNode.backgroundColor = chatPresentationInterfaceState.theme.rootController.navigationBar.separatorColor
        
        super.init()
        
        self.controller?.presentationContext.topLevelSubview = { [weak self] in
            guard let strongSelf = self else {
                return nil
            }
            return strongSelf.titleAccessoryPanelContainer.view
        }
        
        self.setViewBlock({
            return ChatControllerNodeView()
        })
        
        (self.view as? ChatControllerNodeView)?.inputAccessoryHeight = { [weak self] in
            if let strongSelf = self {
                return strongSelf.getWindowInputAccessoryHeight()
            } else {
                return 0.0
            }
        }
        
        (self.view as? ChatControllerNodeView)?.hitTestImpl = { [weak self] point, event in
            return self?.hitTest(point, with: event)
        }
        
        assert(Queue.mainQueue().isCurrent())
        
        self.historyNode.setLoadStateUpdated { [weak self] loadState, animated in
            if let strongSelf = self {
                if case .loading = loadState {
                    strongSelf.updateIsLoading(isLoading: true, animated: animated)
                } else {
                    strongSelf.updateIsLoading(isLoading: false, animated: animated)
                }
                
                var isEmpty = false
                if case .empty = loadState {
                    isEmpty = true
                }
                strongSelf.updateIsEmpty(isEmpty, animated: animated)
            }
        }
        
        self.backgroundImageDisposable.set(chatControllerBackgroundImageSignal(wallpaper: chatPresentationInterfaceState.chatWallpaper, mediaBox: context.sharedContext.accountManager.mediaBox, accountMediaBox: context.account.postbox.mediaBox).start(next: { [weak self] image in
            if let strongSelf = self, let (image, _) = image {
                strongSelf.backgroundNode.image = image
            }
        }))
        
        self.interactiveEmojisDisposable = (self.context.account.postbox.preferencesView(keys: [PreferencesKeys.appConfiguration])
        |> map { preferencesView -> InteractiveEmojiConfiguration in
            let appConfiguration: AppConfiguration = preferencesView.values[PreferencesKeys.appConfiguration] as? AppConfiguration ?? .defaultValue
            return InteractiveEmojiConfiguration.with(appConfiguration: appConfiguration)
        }
        |> deliverOnMainQueue).start(next: { [weak self] emojis in
            if let strongSelf = self {
                strongSelf.interactiveEmojis = emojis
            }
        })
        
        if case .gradient = chatPresentationInterfaceState.chatWallpaper {
            self.backgroundNode.imageContentMode = .scaleToFill
        } else {
            self.backgroundNode.imageContentMode = .scaleAspectFill
        }
        self.backgroundNode.motionEnabled = chatPresentationInterfaceState.chatWallpaper.settings?.motion ?? false

        self.historyNode.verticalScrollIndicatorColor = UIColor(white: 0.5, alpha: 0.8)
        self.historyNode.enableExtractedBackgrounds = true
    
        self.addSubnode(self.backgroundNode)
        self.addSubnode(self.historyNodeContainer)
        self.addSubnode(self.navigateButtons)
        self.addSubnode(self.titleAccessoryPanelContainer)
        
        self.addSubnode(self.inputPanelBackgroundNode)
        self.addSubnode(self.inputPanelBackgroundSeparatorNode)
        
        self.addSubnode(self.inputContextPanelContainer)
                
        self.addSubnode(self.navigationBarBackroundNode)
        self.addSubnode(self.navigationBarSeparatorNode)
        if !self.context.sharedContext.immediateExperimentalUISettings.playerEmbedding {
            self.navigationBarBackroundNode.isHidden = true
            self.navigationBarSeparatorNode.isHidden = true
        }
        
        self.historyNode.view.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(self.tapGesture(_:))))
        
        self.textInputPanelNode = ChatTextInputPanelNode(presentationInterfaceState: chatPresentationInterfaceState, presentController: { [weak self] controller in
            self?.interfaceInteraction?.presentController(controller, nil)
        })
        self.textInputPanelNode?.storedInputLanguage = chatPresentationInterfaceState.interfaceState.inputLanguage
        self.textInputPanelNode?.updateHeight = { [weak self] animated in
            if let strongSelf = self, let _ = strongSelf.inputPanelNode as? ChatTextInputPanelNode, !strongSelf.ignoreUpdateHeight {
                if strongSelf.scheduledLayoutTransitionRequest == nil {
                    strongSelf.scheduleLayoutTransitionRequest(animated ? .animated(duration: 0.1, curve: .easeInOut) : .immediate)
                }
            }
        }
        
        self.textInputPanelNode?.sendMessage = { [weak self] in
            if let strongSelf = self {
                if case .scheduledMessages = strongSelf.chatPresentationInterfaceState.subject, strongSelf.chatPresentationInterfaceState.editMessageState == nil {
                    strongSelf.controllerInteraction.scheduleCurrentMessage()
                } else {
                    strongSelf.sendCurrentMessage()
                }
            }
        }
        
        self.textInputPanelNode?.paste = { [weak self] data in
            self?.paste(data)
        }
        self.textInputPanelNode?.displayAttachmentMenu = { [weak self] in
            self?.displayAttachmentMenu()
        }
        self.textInputPanelNode?.updateActivity = { [weak self] in
            self?.updateTypingActivity(true)
        }
    }
    
    deinit {
        self.backgroundImageDisposable.dispose()
        self.interactiveEmojisDisposable?.dispose()
        self.openStickersDisposable?.dispose()
        self.displayVideoUnmuteTipDisposable?.dispose()
    }
    
    override func didLoad() {
        super.didLoad()
        
        let recognizer = WindowPanRecognizer(target: nil, action: nil)
        recognizer.cancelsTouchesInView = false
        recognizer.delaysTouchesBegan = false
        recognizer.delaysTouchesEnded = false
        recognizer.delegate = self.keyboardGestureRecognizerDelegate
        recognizer.began = { [weak self] point in
            guard let strongSelf = self else {
                return
            }
            strongSelf.panGestureBegan(location: point)
        }
        recognizer.moved = { [weak self] point in
            guard let strongSelf = self else {
                return
            }
            strongSelf.panGestureMoved(location: point)
        }
        recognizer.ended = { [weak self] point, velocity in
            guard let strongSelf = self else {
                return
            }
            strongSelf.panGestureEnded(location: point, velocity: velocity)
        }
        self.panRecognizer = recognizer
        self.view.addGestureRecognizer(recognizer)
        
        self.view.disablesInteractiveTransitionGestureRecognizerNow = { [weak self] in
            guard let strongSelf = self else {
                return false
            }
            if let _ = strongSelf.chatPresentationInterfaceState.inputTextPanelState.mediaRecordingState {
                return true
            }
            return false
        }
        
        self.displayVideoUnmuteTipDisposable = (combineLatest(queue: Queue.mainQueue(), ApplicationSpecificNotice.getVolumeButtonToUnmute(accountManager: self.context.sharedContext.accountManager), self.historyNode.hasVisiblePlayableItemNodes, self.historyNode.isInteractivelyScrolling)
        |> mapToSignal { notice, hasVisiblePlayableItemNodes, isInteractivelyScrolling -> Signal<Bool, NoError> in
            let display = !notice && hasVisiblePlayableItemNodes && !isInteractivelyScrolling
            if display {
                return .complete()
                |> delay(2.5, queue: Queue.mainQueue())
                |> then(
                    .single(display)
                )
            } else {
                return .single(display)
            }
        }).start(next: { [weak self] display in
            if let strongSelf = self, let interfaceInteraction = strongSelf.interfaceInteraction {
                if display {
                    var nodes: [(CGFloat, ChatMessageItemView, ASDisplayNode)] = []
                    var skip = false
                    strongSelf.historyNode.forEachVisibleItemNode { itemNode in
                        if let itemNode = itemNode as? ChatMessageItemView, let (_, soundEnabled, isVideoMessage, _, badgeNode) = itemNode.playMediaWithSound(), let node = badgeNode {
                            if soundEnabled {
                                skip = true
                            } else if !skip && !isVideoMessage, case let .visible(fraction) = itemNode.visibility {
                                nodes.insert((fraction, itemNode, node), at: 0)
                            }
                        }
                    }
                    for (fraction, _, badgeNode) in nodes {
                        if fraction > 0.7 {
                            interfaceInteraction.displayVideoUnmuteTip(badgeNode.view.convert(badgeNode.view.bounds, to: strongSelf.view).origin.offsetBy(dx: 42.0, dy: -1.0))
                            break
                        }
                    }
                } else {
                    interfaceInteraction.displayVideoUnmuteTip(nil)
                }
            }
        })
    }
    
    private func updateIsEmpty(_ isEmpty: Bool, animated: Bool) {
        if isEmpty && self.emptyNode == nil {
            let emptyNode = ChatEmptyNode(account: self.context.account, interaction: self.interfaceInteraction)
            if let (size, insets) = self.validEmptyNodeLayout {
                emptyNode.updateLayout(interfaceState: self.chatPresentationInterfaceState, size: size, insets: insets, transition: .immediate)
            }
            emptyNode.isHidden = self.restrictedNode != nil
            self.emptyNode = emptyNode
            self.historyNodeContainer.supernode?.insertSubnode(emptyNode, aboveSubnode: self.historyNodeContainer)
            if animated {
                emptyNode.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.2)
            }
        } else if let emptyNode = self.emptyNode {
            self.emptyNode = nil
            if animated {
                emptyNode.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.2, removeOnCompletion: false, completion: { [weak emptyNode] _ in
                    emptyNode?.removeFromSupernode()
                })
            } else {
                emptyNode.removeFromSupernode()
            }
        }
    }
    
    var greetingStickerNode: (ASDisplayNode, ASDisplayNode, ASDisplayNode, () -> Void)? {
        if let greetingStickerNode = self.emptyNode?.greetingStickerNode {
            self.historyNode.itemHeaderNodesAlpha = 0.0
            return (greetingStickerNode, self, self.historyNode, { [weak self] in
                self?.historyNode.forEachItemHeaderNode { node in
                    node.alpha = 1.0
                    node.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.2)
                }
            })
        } else {
            return nil
        }
    }
    
    private var isInFocus: Bool = false
    
    func inFocusUpdated(isInFocus: Bool) {
        self.isInFocus = isInFocus
        
        self.inputMediaNode?.simulateUpdateLayout(isVisible: isInFocus)
    }
    
    func containerLayoutUpdated(_ layout: ContainerViewLayout, navigationBarHeight: CGFloat, transition protoTransition: ContainedViewLayoutTransition, listViewTransaction:
        (ListViewUpdateSizeAndInsets, CGFloat, Bool, @escaping () -> Void) -> Void) {
        let transition: ContainedViewLayoutTransition
        if let _ = self.scheduledAnimateInAsOverlayFromNode {
            transition = .immediate
        } else {
            transition = protoTransition
        }
        
        self.scheduledLayoutTransitionRequest = nil
        if case .overlay = self.chatPresentationInterfaceState.mode {
            if self.backgroundEffectNode == nil {
                let backgroundEffectNode = ASDisplayNode()
                backgroundEffectNode.backgroundColor = self.chatPresentationInterfaceState.theme.chatList.backgroundColor.withAlphaComponent(0.8)
                self.insertSubnode(backgroundEffectNode, at: 0)
                self.backgroundEffectNode = backgroundEffectNode
                backgroundEffectNode.view.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(self.backgroundEffectTap(_:))))
            }
            if self.scrollContainerNode == nil {
                let scrollContainerNode = ScrollContainerNode()
                scrollContainerNode.view.delaysContentTouches = false
                scrollContainerNode.view.delegate = self
                scrollContainerNode.view.alwaysBounceVertical = true
                if #available(iOSApplicationExtension 11.0, iOS 11.0, *) {
                    scrollContainerNode.view.contentInsetAdjustmentBehavior = .never
                }
                self.insertSubnode(scrollContainerNode, aboveSubnode: self.backgroundEffectNode!)
                self.scrollContainerNode = scrollContainerNode
            }
            if self.containerBackgroundNode == nil {
                let containerBackgroundNode = ASImageNode()
                containerBackgroundNode.displaysAsynchronously = false
                containerBackgroundNode.displayWithoutProcessing = true
                containerBackgroundNode.image = PresentationResourcesRootController.inAppNotificationBackground(self.chatPresentationInterfaceState.theme)
                self.scrollContainerNode?.addSubnode(containerBackgroundNode)
                self.containerBackgroundNode = containerBackgroundNode
            }
            if self.containerNode == nil {
                let containerNode = ASDisplayNode()
                containerNode.clipsToBounds = true
                containerNode.cornerRadius = 15.0
                containerNode.addSubnode(self.backgroundNode)
                containerNode.addSubnode(self.historyNodeContainer)
                if let restrictedNode = self.restrictedNode {
                    containerNode.addSubnode(restrictedNode)
                }
                self.containerNode = containerNode
                self.scrollContainerNode?.addSubnode(containerNode)
                self.navigationBar?.isHidden = true
            }
            if self.overlayNavigationBar == nil {
                let overlayNavigationBar = ChatOverlayNavigationBar(theme: self.chatPresentationInterfaceState.theme, strings: self.chatPresentationInterfaceState.strings, nameDisplayOrder: self.chatPresentationInterfaceState.nameDisplayOrder, tapped: { [weak self] in
                    if let strongSelf = self {
                        strongSelf.dismissAsOverlay()
                        if case let .peer(id) = strongSelf.chatPresentationInterfaceState.chatLocation {
                            strongSelf.interfaceInteraction?.navigateToChat(id)
                        }
                    }
                }, close: { [weak self] in
                    self?.dismissAsOverlay()
                })
                overlayNavigationBar.peerView = self.peerView
                self.overlayNavigationBar = overlayNavigationBar
                self.containerNode?.addSubnode(overlayNavigationBar)
            }
        } else {
            if let backgroundEffectNode = self.backgroundEffectNode {
                backgroundEffectNode.removeFromSupernode()
                self.backgroundEffectNode = nil
            }
            if let scrollContainerNode = self.scrollContainerNode {
                scrollContainerNode.removeFromSupernode()
                self.scrollContainerNode = nil
            }
            if let containerNode = self.containerNode {
                self.containerNode = nil
                containerNode.removeFromSupernode()
                self.insertSubnode(self.backgroundNode, at: 0)
                self.insertSubnode(self.historyNodeContainer, aboveSubnode: self.backgroundNode)
                if let restrictedNode = self.restrictedNode {
                    self.insertSubnode(restrictedNode, aboveSubnode: self.historyNodeContainer)
                }
                self.navigationBar?.isHidden = false
            }
            if let overlayNavigationBar = self.overlayNavigationBar {
                overlayNavigationBar.removeFromSupernode()
                self.overlayNavigationBar = nil
            }
        }
        
        var dismissedInputByDragging = false
        if let (validLayout, _) = self.validLayout {
            var wasDraggingKeyboard = false
            if validLayout.inputHeight != nil && validLayout.inputHeightIsInteractivellyChanging {
                wasDraggingKeyboard = true
            }
            var wasDraggingInputNode = false
            if let derivedLayoutState = self.derivedLayoutState, let inputNodeHeight = derivedLayoutState.inputNodeHeight, !inputNodeHeight.isZero, let upperInputPositionBound =  derivedLayoutState.upperInputPositionBound {
                let normalizedHeight = max(0.0, layout.size.height - upperInputPositionBound)
                if normalizedHeight < inputNodeHeight {
                    wasDraggingInputNode = true
                }
            }
            if wasDraggingKeyboard || wasDraggingInputNode {
                var isDraggingKeyboard = wasDraggingKeyboard
                if layout.inputHeight == 0.0 && validLayout.inputHeightIsInteractivellyChanging && !layout.inputHeightIsInteractivellyChanging {
                    isDraggingKeyboard = false
                }
                var isDraggingInputNode = false
                if self.upperInputPositionBound != nil {
                    isDraggingInputNode = true
                }
                if !isDraggingKeyboard && !isDraggingInputNode {
                    dismissedInputByDragging = true
                }
            }
        }
        
        self.validLayout = (layout, navigationBarHeight)
        
        let cleanInsets = layout.intrinsicInsets
        
        var previousInputHeight: CGFloat = 0.0
        if let (previousLayout, _) = self.containerLayoutAndNavigationBarHeight {
            previousInputHeight = previousLayout.insets(options: [.input]).bottom
        }
        if let inputNode = self.inputNode {
            previousInputHeight = inputNode.bounds.size.height
        }
        var previousInputPanelOrigin = CGPoint(x: 0.0, y: layout.size.height - previousInputHeight)
        if let inputPanelNode = self.inputPanelNode {
            previousInputPanelOrigin.y -= inputPanelNode.bounds.size.height
        }
        if let secondaryInputPanelNode = self.secondaryInputPanelNode {
            previousInputPanelOrigin.y -= secondaryInputPanelNode.bounds.size.height
        }
        self.containerLayoutAndNavigationBarHeight = (layout, navigationBarHeight)
        
        var dismissedTitleAccessoryPanelNode: ChatTitleAccessoryPanelNode?
        var immediatelyLayoutTitleAccessoryPanelNodeAndAnimateAppearance = false
        var titleAccessoryPanelHeight: CGFloat?
        if let titleAccessoryPanelNode = titlePanelForChatPresentationInterfaceState(self.chatPresentationInterfaceState, context: self.context, currentPanel: self.titleAccessoryPanelNode, interfaceInteraction: self.interfaceInteraction) {
            if self.titleAccessoryPanelNode != titleAccessoryPanelNode {
                 dismissedTitleAccessoryPanelNode = self.titleAccessoryPanelNode
                self.titleAccessoryPanelNode = titleAccessoryPanelNode
                immediatelyLayoutTitleAccessoryPanelNodeAndAnimateAppearance = true
                self.titleAccessoryPanelContainer.addSubnode(titleAccessoryPanelNode)
            }
            
            titleAccessoryPanelHeight = titleAccessoryPanelNode.updateLayout(width: layout.size.width, leftInset: layout.safeInsets.left, rightInset: layout.safeInsets.right, transition: immediatelyLayoutTitleAccessoryPanelNodeAndAnimateAppearance ? .immediate : transition, interfaceState: self.chatPresentationInterfaceState)
        } else if let titleAccessoryPanelNode = self.titleAccessoryPanelNode {
            dismissedTitleAccessoryPanelNode = titleAccessoryPanelNode
            self.titleAccessoryPanelNode = nil
        }
        
        var inputPanelNodeBaseHeight: CGFloat = 0.0
        if let inputPanelNode = self.inputPanelNode {
            inputPanelNodeBaseHeight += inputPanelNode.minimalHeight(interfaceState: self.chatPresentationInterfaceState, metrics: layout.metrics)
        }
        if let secondaryInputPanelNode = self.secondaryInputPanelNode {
            inputPanelNodeBaseHeight += secondaryInputPanelNode.minimalHeight(interfaceState: self.chatPresentationInterfaceState, metrics: layout.metrics)
        }
        
        let maximumInputNodeHeight = layout.size.height - max(navigationBarHeight, layout.safeInsets.top) - inputPanelNodeBaseHeight
        
        var dismissedInputNode: ChatInputNode?
        var immediatelyLayoutInputNodeAndAnimateAppearance = false
        var inputNodeHeightAndOverflow: (CGFloat, CGFloat)?
        if let inputNode = inputNodeForChatPresentationIntefaceState(self.chatPresentationInterfaceState, context: self.context, currentNode: self.inputNode, interfaceInteraction: self.interfaceInteraction, inputMediaNode: self.inputMediaNode, controllerInteraction: self.controllerInteraction, inputPanelNode: self.inputPanelNode) {
            if let inputPanelNode = self.inputPanelNode as? ChatTextInputPanelNode {
                if inputPanelNode.isFocused {
                    self.context.sharedContext.mainWindow?.simulateKeyboardDismiss(transition: .animated(duration: 0.5, curve: .spring))
                }
            }
            if let inputMediaNode = inputNode as? ChatMediaInputNode, self.inputMediaNode == nil {
                self.inputMediaNode = inputMediaNode
            }
            if self.inputNode != inputNode {
                dismissedInputNode = self.inputNode
                self.inputNode = inputNode
                inputNode.alpha = 1.0
                inputNode.layer.removeAnimation(forKey: "opacity")
                immediatelyLayoutInputNodeAndAnimateAppearance = true
                if let inputPanelNode = self.inputPanelNode, inputPanelNode.supernode != nil {
                    self.insertSubnode(inputNode, aboveSubnode: inputPanelNode)
                } else {
                    self.insertSubnode(inputNode, aboveSubnode: self.inputPanelBackgroundNode)
                }
            }
            inputNodeHeightAndOverflow = inputNode.updateLayout(width: layout.size.width, leftInset: layout.safeInsets.left, rightInset: layout.safeInsets.right, bottomInset: cleanInsets.bottom, standardInputHeight: layout.standardInputHeight, inputHeight: layout.inputHeight ?? 0.0, maximumHeight: maximumInputNodeHeight, inputPanelHeight: inputPanelNodeBaseHeight, transition: immediatelyLayoutInputNodeAndAnimateAppearance ? .immediate : transition, interfaceState: self.chatPresentationInterfaceState, deviceMetrics: layout.deviceMetrics, isVisible: self.isInFocus)
        } else if let inputNode = self.inputNode {
            dismissedInputNode = inputNode
            self.inputNode = nil
        }
        
        var effectiveInputNodeHeight: CGFloat?
        if let inputNodeHeightAndOverflow = inputNodeHeightAndOverflow {
            if let upperInputPositionBound = self.upperInputPositionBound {
                effectiveInputNodeHeight = max(0.0, min(layout.size.height - max(0.0, upperInputPositionBound), inputNodeHeightAndOverflow.0))
            } else {
                effectiveInputNodeHeight = inputNodeHeightAndOverflow.0
            }
        }
        
        var insets: UIEdgeInsets
        var bottomOverflowOffset: CGFloat = 0.0
        if let effectiveInputNodeHeight = effectiveInputNodeHeight, let inputNodeHeightAndOverflow = inputNodeHeightAndOverflow {
            insets = layout.insets(options: [])
            insets.bottom = max(effectiveInputNodeHeight, insets.bottom)
            bottomOverflowOffset = inputNodeHeightAndOverflow.1
        } else {
            insets = layout.insets(options: [.input])
        }
        
        let statusBarHeight = layout.insets(options: [.statusBar]).top
        
        func extractExperimentalPlaylistUrl(_ text: String) -> String? {
            let prefix = "stream: "
            if text.hasPrefix(prefix) {
                if let url = URL(string: String(text[text.index(text.startIndex, offsetBy: prefix.count)...])), url.absoluteString.hasSuffix(".m3u8") {
                    return url.absoluteString
                } else {
                    return nil
                }
            } else {
                return nil
            }
        }
        
        if let pinnedMessage = self.chatPresentationInterfaceState.pinnedMessage, self.context.sharedContext.immediateExperimentalUISettings.playerEmbedding, self.context.sharedContext.immediateExperimentalUISettings.playlistPlayback, self.embeddedTitleContentNode == nil, let url = extractExperimentalPlaylistUrl(pinnedMessage.message.text), self.didProcessExperimentalEmbedUrl != url {
            self.didProcessExperimentalEmbedUrl = url
            let context = self.context
            let baseNavigationController = self.controller?.navigationController as? NavigationController
            let mediaManager = self.context.sharedContext.mediaManager
            var expandImpl: (() -> Void)?
            let content = PlatformVideoContent(id: .instantPage(MediaId(namespace: 0, id: 0), MediaId(namespace: 0, id: 0)), content: .url(url), streamVideo: true, loopVideo: false)
            let overlayNode = OverlayUniversalVideoNode(postbox: self.context.account.postbox, audioSession: self.context.sharedContext.mediaManager.audioSession, manager: self.context.sharedContext.mediaManager.universalVideoManager, content: content, expand: {
                expandImpl?()
            }, close: { [weak mediaManager] in
                mediaManager?.setOverlayVideoNode(nil)
            })
            self.embeddedTitleContentNode = ChatEmbeddedTitleContentNode(context: self.context, videoNode: overlayNode, disableInternalAnimationIn: true, interactiveExtensionUpdated: { [weak self] transition in
                guard let strongSelf = self else {
                    return
                }
                strongSelf.requestLayout(transition)
            }, dismissed: { [weak self] in
                guard let strongSelf = self else {
                    return
                }
                if let embeddedTitleContentNode = strongSelf.embeddedTitleContentNode {
                    strongSelf.embeddedTitleContentNode = nil
                    strongSelf.dismissedEmbeddedTitleContentNode = embeddedTitleContentNode
                    strongSelf.requestLayout(.animated(duration: 0.25, curve: .spring))
                    strongSelf.updateHasEmbeddedTitleContent?()
                }
            }, isUIHiddenUpdated: { [weak self] in
                self?.updateHasEmbeddedTitleContent?()
            }, unembedWhenPortrait: { [weak self] itemNode in
                guard let strongSelf = self, let itemNode = itemNode as? OverlayUniversalVideoNode else {
                    return false
                }
                strongSelf.unembedWhenPortrait(contentNode: itemNode)
                return true
            })
            self.embeddedTitleContentNode?.unembedOnLeave = false
            self.updateHasEmbeddedTitleContent?()
            overlayNode.controlPlay()
        }
        
        if self.chatPresentationInterfaceState.pinnedMessage == nil {
            self.didProcessExperimentalEmbedUrl = nil
        }
        
        if let embeddedTitleContentNode = self.embeddedTitleContentNode, embeddedTitleContentNode.supernode != nil {
            if layout.size.width > layout.size.height {
                self.embeddedTitleContentNode = nil
                self.dismissedEmbeddedTitleContentNode = embeddedTitleContentNode
                embeddedTitleContentNode.expand(intoLandscape: true)
                self.updateHasEmbeddedTitleContent?()
            }
        }
        
        if let embeddedTitleContentNode = self.embeddedTitleContentNode {
            let defaultEmbeddedSize = CGSize(width: layout.size.width, height: min(400.0, embeddedTitleContentNode.calculateHeight(width: layout.size.width)) + statusBarHeight + embeddedTitleContentNode.interactiveExtension)
            
            let embeddedSize: CGSize
            if let inputHeight = layout.inputHeight, inputHeight > 100.0 {
                embeddedSize = CGSize(width: defaultEmbeddedSize.width, height: floor(defaultEmbeddedSize.height * 0.6))
            } else {
                embeddedSize = defaultEmbeddedSize
            }
            
            if embeddedTitleContentNode.supernode == nil {
                self.insertSubnode(embeddedTitleContentNode, aboveSubnode: self.navigationBarBackroundNode)
                
                var previousTopInset = insets.top
                if case .overlay = self.chatPresentationInterfaceState.mode {
                    previousTopInset = 44.0
                } else {
                    previousTopInset += navigationBarHeight
                }
                
                if case .peek = self.embeddedTitlePeekContent {
                    previousTopInset += 32.0
                }
                
                embeddedTitleContentNode.frame = CGRect(origin: CGPoint(), size: CGSize(width: layout.size.width, height: previousTopInset))
                transition.updateFrame(node: embeddedTitleContentNode, frame: CGRect(origin: CGPoint(), size: embeddedSize))
                embeddedTitleContentNode.updateLayout(size: embeddedSize, actualHeight: defaultEmbeddedSize.height, topInset: statusBarHeight, interactiveExtension: embeddedTitleContentNode.interactiveExtension, transition: .immediate, transitionSurface: self, navigationBar: self.navigationBar)
            } else {
                transition.updateFrame(node: embeddedTitleContentNode, frame: CGRect(origin: CGPoint(), size: embeddedSize))
                embeddedTitleContentNode.updateLayout(size: embeddedSize, actualHeight: defaultEmbeddedSize.height, topInset: statusBarHeight, interactiveExtension: embeddedTitleContentNode.interactiveExtension, transition: transition, transitionSurface: self, navigationBar: self.navigationBar)
            }
            
            insets.top += embeddedSize.height
        } else {
            if case .overlay = self.chatPresentationInterfaceState.mode {
                insets.top = 44.0
            } else {
                insets.top += navigationBarHeight
            }
            
            if case .peek = self.embeddedTitlePeekContent {
                insets.top += 32.0
            }
        }
        
        if let dismissedEmbeddedTitleContentNode = self.dismissedEmbeddedTitleContentNode {
            self.dismissedEmbeddedTitleContentNode = nil
            if transition.isAnimated {
                dismissedEmbeddedTitleContentNode.alpha = 0.0
                dismissedEmbeddedTitleContentNode.layer.allowsGroupOpacity = true
                dismissedEmbeddedTitleContentNode.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.15, completion: { [weak dismissedEmbeddedTitleContentNode] _ in
                    dismissedEmbeddedTitleContentNode?.removeFromSupernode()
                })
                transition.updateFrame(node: dismissedEmbeddedTitleContentNode, frame: CGRect(origin: CGPoint(), size: CGSize(width: layout.size.width, height: insets.top)))
            } else {
                dismissedEmbeddedTitleContentNode.removeFromSupernode()
            }
        }
        
        transition.updateFrame(node: self.navigationBarBackroundNode, frame: CGRect(origin: CGPoint(), size: CGSize(width: layout.size.width, height: insets.top)))
        transition.updateFrame(node: self.navigationBarSeparatorNode, frame: CGRect(origin: CGPoint(x: 0.0, y: insets.top), size: CGSize(width: layout.size.width, height: UIScreenPixel)))
        
        var wrappingInsets = UIEdgeInsets()
        if case .overlay = self.chatPresentationInterfaceState.mode {
            let containerWidth = horizontalContainerFillingSizeForLayout(layout: layout, sideInset: 8.0 + layout.safeInsets.left)
            wrappingInsets.left = floor((layout.size.width - containerWidth) / 2.0)
            wrappingInsets.right = wrappingInsets.left
            
            wrappingInsets.top = 8.0
            if let statusBarHeight = layout.statusBarHeight, CGFloat(40.0).isLess(than: statusBarHeight) {
                wrappingInsets.top += statusBarHeight
            }
        }
        
        var dismissedInputPanelNode: ASDisplayNode?
        var dismissedSecondaryInputPanelNode: ASDisplayNode?
        var dismissedAccessoryPanelNode: ASDisplayNode?
        var dismissedInputContextPanelNode: ChatInputContextPanelNode?
        var dismissedOverlayContextPanelNode: ChatInputContextPanelNode?
        
        let previewing: Bool
        if case .standard(true) = self.chatPresentationInterfaceState.mode {
            previewing = true
        } else {
            previewing = false
        }
        
        var inputPanelSize: CGSize?
        var immediatelyLayoutInputPanelAndAnimateAppearance = false
        var secondaryInputPanelSize: CGSize?
        var immediatelyLayoutSecondaryInputPanelAndAnimateAppearance = false
        var inputPanelNodeHandlesTransition = false
        
        let inputPanelNodes = inputPanelForChatPresentationIntefaceState(self.chatPresentationInterfaceState, context: self.context, currentPanel: self.inputPanelNode, currentSecondaryPanel: self.secondaryInputPanelNode, textInputPanelNode: self.textInputPanelNode, interfaceInteraction: self.interfaceInteraction)
        
        if let inputPanelNode = inputPanelNodes.primary, !previewing {
            if inputPanelNode !== self.inputPanelNode {
                if let inputTextPanelNode = self.inputPanelNode as? ChatTextInputPanelNode {
                    if inputTextPanelNode.isFocused {
                        self.context.sharedContext.mainWindow?.simulateKeyboardDismiss(transition: .animated(duration: 0.5, curve: .spring))
                    }
                    let _ = inputTextPanelNode.updateLayout(width: layout.size.width, leftInset: layout.safeInsets.left, rightInset: layout.safeInsets.right, additionalSideInsets: layout.additionalInsets, maxHeight: layout.size.height - insets.top - insets.bottom, isSecondary: false, transition: transition, interfaceState: self.chatPresentationInterfaceState, metrics: layout.metrics)
                }
                if let prevInputPanelNode = self.inputPanelNode, inputPanelNode.canHandleTransition(from: prevInputPanelNode) {
                    inputPanelNodeHandlesTransition = true
                    inputPanelNode.removeFromSupernode()
                    inputPanelNode.prevInputPanelNode = prevInputPanelNode
                    inputPanelNode.addSubnode(prevInputPanelNode)
                } else {
                    dismissedInputPanelNode = self.inputPanelNode
                }
                let inputPanelHeight = inputPanelNode.updateLayout(width: layout.size.width, leftInset: layout.safeInsets.left, rightInset: layout.safeInsets.right, additionalSideInsets: layout.additionalInsets, maxHeight: layout.size.height - insets.top - insets.bottom, isSecondary: false, transition: inputPanelNode.supernode !== self ? .immediate : transition, interfaceState: self.chatPresentationInterfaceState, metrics: layout.metrics)
                inputPanelSize = CGSize(width: layout.size.width, height: inputPanelHeight)
                self.inputPanelNode = inputPanelNode
                if inputPanelNode.supernode !== self {
                    immediatelyLayoutInputPanelAndAnimateAppearance = true
                    self.insertSubnode(inputPanelNode, aboveSubnode: self.inputPanelBackgroundNode)
                }
            } else {
                let inputPanelHeight = inputPanelNode.updateLayout(width: layout.size.width, leftInset: layout.safeInsets.left, rightInset: layout.safeInsets.right, additionalSideInsets: layout.additionalInsets, maxHeight: layout.size.height - insets.top - insets.bottom, isSecondary: false, transition: transition, interfaceState: self.chatPresentationInterfaceState, metrics: layout.metrics)
                inputPanelSize = CGSize(width: layout.size.width, height: inputPanelHeight)
            }
        } else {
            dismissedInputPanelNode = self.inputPanelNode
            self.inputPanelNode = nil
        }
        
        if let secondaryInputPanelNode = inputPanelNodes.secondary, !previewing {
            if secondaryInputPanelNode !== self.secondaryInputPanelNode {
                dismissedSecondaryInputPanelNode = self.secondaryInputPanelNode
                let inputPanelHeight = secondaryInputPanelNode.updateLayout(width: layout.size.width, leftInset: layout.safeInsets.left, rightInset: layout.safeInsets.right, additionalSideInsets: layout.additionalInsets, maxHeight: layout.size.height - insets.top - insets.bottom, isSecondary: true, transition: .immediate, interfaceState: self.chatPresentationInterfaceState, metrics: layout.metrics)
                secondaryInputPanelSize = CGSize(width: layout.size.width, height: inputPanelHeight)
                self.secondaryInputPanelNode = secondaryInputPanelNode
                if secondaryInputPanelNode.supernode == nil {
                    immediatelyLayoutSecondaryInputPanelAndAnimateAppearance = true
                    self.insertSubnode(secondaryInputPanelNode, aboveSubnode: self.inputPanelBackgroundNode)
                }
            } else {
                let inputPanelHeight = secondaryInputPanelNode.updateLayout(width: layout.size.width, leftInset: layout.safeInsets.left, rightInset: layout.safeInsets.right, additionalSideInsets: layout.additionalInsets, maxHeight: layout.size.height - insets.top - insets.bottom, isSecondary: true, transition: transition, interfaceState: self.chatPresentationInterfaceState, metrics: layout.metrics)
                secondaryInputPanelSize = CGSize(width: layout.size.width, height: inputPanelHeight)
            }
        } else {
            dismissedSecondaryInputPanelNode = self.secondaryInputPanelNode
            self.secondaryInputPanelNode = nil
        }
                
        if let inputMediaNode = self.inputMediaNode, inputMediaNode != self.inputNode {
            let _ = inputMediaNode.updateLayout(width: layout.size.width, leftInset: layout.safeInsets.left, rightInset: layout.safeInsets.right, bottomInset: cleanInsets.bottom, standardInputHeight: layout.standardInputHeight, inputHeight: layout.inputHeight ?? 0.0, maximumHeight: maximumInputNodeHeight, inputPanelHeight: inputPanelSize?.height ?? 0.0, transition: .immediate, interfaceState: self.chatPresentationInterfaceState, deviceMetrics: layout.deviceMetrics, isVisible: false)
        }
        
        transition.updateFrame(node: self.titleAccessoryPanelContainer, frame: CGRect(origin: CGPoint(x: 0.0, y: insets.top), size: CGSize(width: layout.size.width, height: 66.0)))
        
        transition.updateFrame(node: self.inputContextPanelContainer, frame: CGRect(origin: CGPoint(x: 0.0, y: 0.0), size: CGSize(width: layout.size.width, height: layout.size.height)))
        
        var titleAccessoryPanelFrame: CGRect?
        if let _ = self.titleAccessoryPanelNode, let panelHeight = titleAccessoryPanelHeight {
            titleAccessoryPanelFrame = CGRect(origin: CGPoint(x: 0.0, y: 0.0), size: CGSize(width: layout.size.width, height: panelHeight))
            insets.top += panelHeight
        }
        
        let contentBounds = CGRect(x: 0.0, y: -bottomOverflowOffset, width: layout.size.width - wrappingInsets.left - wrappingInsets.right, height: layout.size.height - wrappingInsets.top - wrappingInsets.bottom)
        
        if let backgroundEffectNode = self.backgroundEffectNode {
            transition.updateFrame(node: backgroundEffectNode, frame: CGRect(origin: CGPoint(), size: layout.size))
        }
        
        transition.updateFrame(node: self.backgroundNode, frame: contentBounds)
        self.backgroundNode.updateLayout(size: contentBounds.size, transition: transition)
        transition.updateFrame(node: self.historyNodeContainer, frame: contentBounds)
        transition.updateBounds(node: self.historyNode, bounds: CGRect(origin: CGPoint(), size: contentBounds.size))
        transition.updatePosition(node: self.historyNode, position: CGPoint(x: contentBounds.size.width / 2.0, y: contentBounds.size.height / 2.0))
        if let blurredHistoryNode = self.blurredHistoryNode {
            transition.updateFrame(node: blurredHistoryNode, frame: contentBounds)
        }
        
        transition.updateFrame(node: self.loadingNode, frame: contentBounds)
        
        if let restrictedNode = self.restrictedNode {
            transition.updateFrame(node: restrictedNode, frame: contentBounds)
            restrictedNode.updateLayout(size: contentBounds.size, transition: transition)
        }
        
        let (duration, curve) = listViewAnimationDurationAndCurve(transition: transition)
        
        var accessoryPanelSize: CGSize?
        var immediatelyLayoutAccessoryPanelAndAnimateAppearance = false
        if let accessoryPanelNode = accessoryPanelForChatPresentationIntefaceState(self.chatPresentationInterfaceState, context: self.context, currentPanel: self.accessoryPanelNode, interfaceInteraction: self.interfaceInteraction) {
            accessoryPanelSize = accessoryPanelNode.measure(CGSize(width: layout.size.width, height: layout.size.height))
            
            accessoryPanelNode.updateState(size: CGSize(width: layout.size.width, height: layout.size.height), interfaceState: self.chatPresentationInterfaceState)
            
            if accessoryPanelNode !== self.accessoryPanelNode {
                dismissedAccessoryPanelNode = self.accessoryPanelNode
                self.accessoryPanelNode = accessoryPanelNode
                
                if let inputPanelNode = self.inputPanelNode {
                    self.insertSubnode(accessoryPanelNode, belowSubnode: inputPanelNode)
                } else {
                    self.insertSubnode(accessoryPanelNode, aboveSubnode: self.navigateButtons)
                }
                
                accessoryPanelNode.dismiss = { [weak self, weak accessoryPanelNode] in
                    if let strongSelf = self, let accessoryPanelNode = accessoryPanelNode, strongSelf.accessoryPanelNode === accessoryPanelNode {
                        if let _ = accessoryPanelNode as? ReplyAccessoryPanelNode {
                            strongSelf.requestUpdateChatInterfaceState(true, false, { $0.withUpdatedReplyMessageId(nil) })
                        } else if let _ = accessoryPanelNode as? ForwardAccessoryPanelNode {
                            strongSelf.requestUpdateChatInterfaceState(true, false, { $0.withUpdatedForwardMessageIds(nil) })
                        } else if let _ = accessoryPanelNode as? EditAccessoryPanelNode {
                            strongSelf.interfaceInteraction?.setupEditMessage(nil, { _ in })
                        } else if let _ = accessoryPanelNode as? WebpagePreviewAccessoryPanelNode {
                            strongSelf.dismissUrlPreview()
                        }
                    }
                }
                
                immediatelyLayoutAccessoryPanelAndAnimateAppearance = true
            }
        } else if let accessoryPanelNode = self.accessoryPanelNode {
            dismissedAccessoryPanelNode = accessoryPanelNode
            self.accessoryPanelNode = nil
        }
        
        var immediatelyLayoutInputContextPanelAndAnimateAppearance = false
        if let inputContextPanelNode = inputContextPanelForChatPresentationIntefaceState(self.chatPresentationInterfaceState, context: self.context, currentPanel: self.inputContextPanelNode, controllerInteraction: self.controllerInteraction, interfaceInteraction: self.interfaceInteraction) {
            if inputContextPanelNode !== self.inputContextPanelNode {
                dismissedInputContextPanelNode = self.inputContextPanelNode
                self.inputContextPanelNode = inputContextPanelNode
                
                self.inputContextPanelContainer.addSubnode(inputContextPanelNode)
                immediatelyLayoutInputContextPanelAndAnimateAppearance = true
            }
        } else if let inputContextPanelNode = self.inputContextPanelNode {
            dismissedInputContextPanelNode = inputContextPanelNode
            self.inputContextPanelNode = nil
        }
        
        var immediatelyLayoutOverlayContextPanelAndAnimateAppearance = false
        if let overlayContextPanelNode = chatOverlayContextPanelForChatPresentationIntefaceState(self.chatPresentationInterfaceState, context: self.context, currentPanel: self.overlayContextPanelNode, interfaceInteraction: self.interfaceInteraction) {
            if overlayContextPanelNode !== self.overlayContextPanelNode {
                dismissedOverlayContextPanelNode = self.overlayContextPanelNode
                self.overlayContextPanelNode = overlayContextPanelNode
                
                self.addSubnode(overlayContextPanelNode)
                immediatelyLayoutOverlayContextPanelAndAnimateAppearance = true
            }
        } else if let overlayContextPanelNode = self.overlayContextPanelNode {
            dismissedOverlayContextPanelNode = overlayContextPanelNode
            self.overlayContextPanelNode = nil
        }
        
        var inputPanelsHeight: CGFloat = 0.0
        
        var inputPanelFrame: CGRect?
        var secondaryInputPanelFrame: CGRect?
        
        if self.inputPanelNode != nil {
            inputPanelFrame = CGRect(origin: CGPoint(x: 0.0, y: layout.size.height - insets.bottom - bottomOverflowOffset - inputPanelsHeight - inputPanelSize!.height), size: CGSize(width: layout.size.width, height: inputPanelSize!.height))
            if self.dismissedAsOverlay {
                inputPanelFrame!.origin.y = layout.size.height
            }
            inputPanelsHeight += inputPanelSize!.height
        }
        
        if self.secondaryInputPanelNode != nil {
            secondaryInputPanelFrame = CGRect(origin: CGPoint(x: 0.0, y: layout.size.height - insets.bottom - bottomOverflowOffset - inputPanelsHeight - secondaryInputPanelSize!.height), size: CGSize(width: layout.size.width, height: secondaryInputPanelSize!.height))
            if self.dismissedAsOverlay {
                secondaryInputPanelFrame!.origin.y = layout.size.height
            }
            inputPanelsHeight += secondaryInputPanelSize!.height
        }
        
        var accessoryPanelFrame: CGRect?
        if self.accessoryPanelNode != nil {
            assert(accessoryPanelSize != nil)
            accessoryPanelFrame = CGRect(origin: CGPoint(x: 0.0, y: layout.size.height - bottomOverflowOffset - insets.bottom - inputPanelsHeight - accessoryPanelSize!.height), size: CGSize(width: layout.size.width, height: accessoryPanelSize!.height))
            if self.dismissedAsOverlay {
                accessoryPanelFrame!.origin.y = layout.size.height
            }
            inputPanelsHeight += accessoryPanelSize!.height
        }
        
        if self.dismissedAsOverlay {
            inputPanelsHeight = 0.0
        }
        
        let inputBackgroundInset: CGFloat
        if cleanInsets.bottom < insets.bottom {
            inputBackgroundInset = 0.0
        } else {
            inputBackgroundInset = cleanInsets.bottom
        }
        
        var inputBackgroundFrame = CGRect(origin: CGPoint(x: 0.0, y: layout.size.height - insets.bottom - bottomOverflowOffset - inputPanelsHeight), size: CGSize(width: layout.size.width, height: inputPanelsHeight + inputBackgroundInset))
        if self.dismissedAsOverlay {
            inputBackgroundFrame.origin.y = layout.size.height
        }
        
        let additionalScrollDistance: CGFloat = 0.0
        var scrollToTop = false
        if dismissedInputByDragging {
            if !self.historyNode.trackingOffset.isZero {
                if self.historyNode.beganTrackingAtTopOrigin {
                    scrollToTop = true
                }
            }
        }
        
        var emptyNodeInsets = insets
        emptyNodeInsets.bottom += inputPanelsHeight
        self.validEmptyNodeLayout = (contentBounds.size, emptyNodeInsets)
        if let emptyNode = self.emptyNode {
            emptyNode.updateLayout(interfaceState: self.chatPresentationInterfaceState, size: contentBounds.size, insets: emptyNodeInsets, transition: transition)
            transition.updateFrame(node: emptyNode, frame: contentBounds)
        }
        
        transition.updateFrame(node: self.reactionContainerNode, frame: contentBounds)
        self.reactionContainerNode.updateLayout(size: contentBounds.size, insets: UIEdgeInsets(), transition: transition)
        
        var contentBottomInset: CGFloat = inputPanelsHeight + 4.0
        
        if let scrollContainerNode = self.scrollContainerNode {
            transition.updateFrame(node: scrollContainerNode, frame: CGRect(origin: CGPoint(), size: layout.size))
        }
        
        var containerInsets = insets
        if let dismissAsOverlayLayout = self.dismissAsOverlayLayout {
            if let inputNodeHeightAndOverflow = inputNodeHeightAndOverflow {
                containerInsets = dismissAsOverlayLayout.insets(options: [])
                containerInsets.bottom = max(inputNodeHeightAndOverflow.0 + inputNodeHeightAndOverflow.1, insets.bottom)
            } else {
                containerInsets = dismissAsOverlayLayout.insets(options: [.input])
            }
        }
        
        let visibleAreaInset = UIEdgeInsets(top: containerInsets.top, left: 0.0, bottom: containerInsets.bottom + inputPanelsHeight, right: 0.0)
        self.visibleAreaInset = visibleAreaInset
        self.loadingNode.updateLayout(size: contentBounds.size, insets: visibleAreaInset, transition: transition)
        
        if let containerNode = self.containerNode {
            contentBottomInset += 8.0
            let containerNodeFrame = CGRect(origin: CGPoint(x: wrappingInsets.left, y: wrappingInsets.top), size: CGSize(width: contentBounds.size.width, height: contentBounds.size.height - containerInsets.bottom - inputPanelsHeight - 8.0))
            transition.updateFrame(node: containerNode, frame: containerNodeFrame)
            
            if let containerBackgroundNode = self.containerBackgroundNode {
                transition.updateFrame(node: containerBackgroundNode, frame: CGRect(origin: CGPoint(x: containerNodeFrame.minX - 8.0 * 2.0, y: containerNodeFrame.minY - 8.0 * 2.0), size: CGSize(width: containerNodeFrame.size.width + 8.0 * 4.0, height: containerNodeFrame.size.height + 8.0 * 2.0 + 20.0)))
            }
        }
        
        if let overlayNavigationBar = self.overlayNavigationBar {
            let barFrame = CGRect(origin: CGPoint(), size: CGSize(width: contentBounds.size.width, height: 44.0))
            transition.updateFrame(node: overlayNavigationBar, frame: barFrame)
            overlayNavigationBar.updateLayout(size: barFrame.size, transition: transition)
        }
        
        var listInsets = UIEdgeInsets(top: containerInsets.bottom + contentBottomInset, left: containerInsets.right, bottom: containerInsets.top, right: containerInsets.left)
        let listScrollIndicatorInsets = UIEdgeInsets(top: containerInsets.bottom + inputPanelsHeight, left: containerInsets.right, bottom: containerInsets.top, right: containerInsets.left)
        if case .standard = self.chatPresentationInterfaceState.mode {
            listInsets.left += layout.safeInsets.left
            listInsets.right += layout.safeInsets.right
            
            if case .regular = layout.metrics.widthClass, case .regular = layout.metrics.heightClass {
                listInsets.left += 6.0
                listInsets.right += 6.0
                listInsets.top += 6.0
            }
        }
        
        var displayTopDimNode = false
        
        var ensureTopInsetForOverlayHighlightedItems: CGFloat?
        if let (controller, _) = self.messageActionSheetController {
            displayTopDimNode = true
            
            let globalSelfOrigin = self.view.convert(CGPoint(), to: nil)
            
            let menuHeight = controller.controllerNode.updateLayout(layout: layout, horizontalOrigin: globalSelfOrigin.x, transition: transition)
            ensureTopInsetForOverlayHighlightedItems = menuHeight
            
            let bottomInset = containerInsets.bottom + inputPanelsHeight
            let bottomFrame = CGRect(origin: CGPoint(x: 0.0, y: layout.size.height - bottomInset), size: CGSize(width: layout.size.width, height: max(0.0, bottomInset - (layout.inputHeight ?? 0.0))))
            
            let messageActionSheetBottomDimNode: ASDisplayNode
            if let current = self.messageActionSheetBottomDimNode {
                messageActionSheetBottomDimNode = current
                transition.updateFrame(node: messageActionSheetBottomDimNode, frame: bottomFrame)
            } else {
                messageActionSheetBottomDimNode = ASDisplayNode()
                messageActionSheetBottomDimNode.backgroundColor = UIColor(white: 0.0, alpha: 0.5)
                messageActionSheetBottomDimNode.alpha = 0.0
                messageActionSheetBottomDimNode.isLayerBacked = true
                self.messageActionSheetBottomDimNode = messageActionSheetBottomDimNode
                self.addSubnode(messageActionSheetBottomDimNode)
                transition.updateAlpha(node: messageActionSheetBottomDimNode, alpha: 1.0)
                messageActionSheetBottomDimNode.frame = bottomFrame
            }
        } else {
            if let messageActionSheetBottomDimNode = self.messageActionSheetBottomDimNode {
                self.messageActionSheetBottomDimNode = nil
                transition.updateAlpha(node: messageActionSheetBottomDimNode, alpha: 0.0, completion: { [weak messageActionSheetBottomDimNode] _ in
                    messageActionSheetBottomDimNode?.removeFromSupernode()
                })
            }
        }
        
        var expandTopDimNode = false
        if case let .media(_, expanded) = self.chatPresentationInterfaceState.inputMode, expanded != nil {
            displayTopDimNode = true
            expandTopDimNode = true
        }
        
        if displayTopDimNode {
            var topInset = listInsets.bottom + UIScreenPixel
            if let titleAccessoryPanelHeight = titleAccessoryPanelHeight {
                if expandTopDimNode {
                    topInset -= titleAccessoryPanelHeight
                } else {
                    topInset -= UIScreenPixel
                }
            }
            let topFrame = CGRect(origin: CGPoint(x: 0.0, y: 0.0), size: CGSize(width: layout.size.width, height: max(0.0, topInset)))
            
            let messageActionSheetTopDimNode: ASDisplayNode
            if let current = self.messageActionSheetTopDimNode {
                messageActionSheetTopDimNode = current
                transition.updateFrame(node: messageActionSheetTopDimNode, frame: topFrame)
            } else {
                messageActionSheetTopDimNode = ASDisplayNode()
                messageActionSheetTopDimNode.backgroundColor = UIColor(white: 0.0, alpha: 0.5)
                messageActionSheetTopDimNode.alpha = 0.0
                self.messageActionSheetTopDimNode = messageActionSheetTopDimNode
                self.addSubnode(messageActionSheetTopDimNode)
                transition.updateAlpha(node: messageActionSheetTopDimNode, alpha: 1.0)
                messageActionSheetTopDimNode.frame = topFrame
                messageActionSheetTopDimNode.view.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(self.topDimNodeTapGesture(_:))))
            }
            
            let inputPanelOrigin = layout.size.height - insets.bottom - bottomOverflowOffset - inputPanelsHeight
            
            if expandTopDimNode {
                let exandedFrame = CGRect(origin: CGPoint(x: 0.0, y: inputPanelOrigin - layout.size.height), size: CGSize(width: layout.size.width, height: layout.size.height))
                let expandedInputDimNode: ASDisplayNode
                if let current = self.expandedInputDimNode {
                    expandedInputDimNode = current
                    transition.updateFrame(node: expandedInputDimNode, frame: exandedFrame)
                } else {
                    expandedInputDimNode = ASDisplayNode()
                    expandedInputDimNode.backgroundColor = UIColor(white: 0.0, alpha: 0.5)
                    expandedInputDimNode.alpha = 0.0
                    self.expandedInputDimNode = expandedInputDimNode
                    if let inputNode = self.inputNode, inputNode.supernode != nil {
                        self.insertSubnode(expandedInputDimNode, belowSubnode: inputNode)
                    } else {
                        self.addSubnode(expandedInputDimNode)
                    }
                    transition.updateAlpha(node: expandedInputDimNode, alpha: 1.0)
                    expandedInputDimNode.frame = exandedFrame
                    transition.animatePositionAdditive(node: expandedInputDimNode, offset: CGPoint(x: 0.0, y: previousInputPanelOrigin.y - inputPanelOrigin))
                }
            } else {
                if let expandedInputDimNode = self.expandedInputDimNode {
                    self.expandedInputDimNode = nil
                    transition.animatePositionAdditive(node: expandedInputDimNode, offset: CGPoint(x: 0.0, y: previousInputPanelOrigin.y - inputPanelOrigin))
                    transition.updateAlpha(node: expandedInputDimNode, alpha: 0.0, completion: { [weak expandedInputDimNode] _ in
                        expandedInputDimNode?.removeFromSupernode()
                    })
                }
            }
        } else {
            if let messageActionSheetTopDimNode = self.messageActionSheetTopDimNode {
                self.messageActionSheetTopDimNode = nil
                transition.updateAlpha(node: messageActionSheetTopDimNode, alpha: 0.0, completion: { [weak messageActionSheetTopDimNode] _ in
                    messageActionSheetTopDimNode?.removeFromSupernode()
                })
            }
            
            if let expandedInputDimNode = self.expandedInputDimNode {
                self.expandedInputDimNode = nil
                let inputPanelOrigin = layout.size.height - insets.bottom - bottomOverflowOffset - inputPanelsHeight
                let exandedFrame = CGRect(origin: CGPoint(x: 0.0, y: inputPanelOrigin - layout.size.height), size: CGSize(width: layout.size.width, height: layout.size.height))
                transition.updateFrame(node: expandedInputDimNode, frame: exandedFrame)
                transition.updateAlpha(node: expandedInputDimNode, alpha: 0.0, completion: { [weak expandedInputDimNode] _ in
                    expandedInputDimNode?.removeFromSupernode()
                })
            }
        }
        
        if let messageActionSheetControllerAdditionalInset = self.messageActionSheetControllerAdditionalInset {
            listInsets.top = listInsets.top + messageActionSheetControllerAdditionalInset
        }
        
        var childrenLayout = layout
        childrenLayout.intrinsicInsets = UIEdgeInsets(top: listInsets.bottom, left: listInsets.right, bottom: listInsets.top, right: listInsets.left)
        self.controller?.presentationContext.containerLayoutUpdated(childrenLayout, transition: transition)
        
        listViewTransaction(ListViewUpdateSizeAndInsets(size: contentBounds.size, insets: listInsets, scrollIndicatorInsets: listScrollIndicatorInsets, duration: duration, curve: curve, ensureTopInsetForOverlayHighlightedItems: ensureTopInsetForOverlayHighlightedItems), additionalScrollDistance, scrollToTop, { [weak self] in
            if let strongSelf = self {
                strongSelf.notifyTransitionCompletionListeners(transition: transition)
            }
        })
        
        let navigateButtonsSize = self.navigateButtons.updateLayout(transition: transition)
        var navigateButtonsFrame = CGRect(origin: CGPoint(x: layout.size.width - layout.safeInsets.right - navigateButtonsSize.width - 6.0, y: layout.size.height - containerInsets.bottom - inputPanelsHeight - navigateButtonsSize.height - 6.0 - bottomOverflowOffset), size: navigateButtonsSize)
        if case .overlay = self.chatPresentationInterfaceState.mode {
            navigateButtonsFrame = navigateButtonsFrame.offsetBy(dx: -8.0, dy: -8.0)
        }
        
        var apparentInputPanelFrame = inputPanelFrame
        var apparentSecondaryInputPanelFrame = secondaryInputPanelFrame
        var apparentInputBackgroundFrame = inputBackgroundFrame
        var apparentNavigateButtonsFrame = navigateButtonsFrame
        if case let .media(_, maybeExpanded) = self.chatPresentationInterfaceState.inputMode, let expanded = maybeExpanded, case .search = expanded, let inputPanelFrame = inputPanelFrame {
            let verticalOffset = -inputPanelFrame.height - 41.0
            apparentInputPanelFrame = inputPanelFrame.offsetBy(dx: 0.0, dy: verticalOffset)
            apparentInputBackgroundFrame.size.height -= verticalOffset
            apparentInputBackgroundFrame.origin.y += verticalOffset
            apparentNavigateButtonsFrame.origin.y += verticalOffset
        }
        
        let previousInputPanelBackgroundFrame = self.inputPanelBackgroundNode.frame
        transition.updateFrame(node: self.inputPanelBackgroundNode, frame: apparentInputBackgroundFrame)
        transition.updateFrame(node: self.inputPanelBackgroundSeparatorNode, frame: CGRect(origin: CGPoint(x: 0.0, y: apparentInputBackgroundFrame.origin.y), size: CGSize(width: apparentInputBackgroundFrame.size.width, height: UIScreenPixel)))
        transition.updateFrame(node: self.navigateButtons, frame: apparentNavigateButtonsFrame)
        
        if let titleAccessoryPanelNode = self.titleAccessoryPanelNode, let titleAccessoryPanelFrame = titleAccessoryPanelFrame, !titleAccessoryPanelNode.frame.equalTo(titleAccessoryPanelFrame) {
            titleAccessoryPanelNode.frame = titleAccessoryPanelFrame
            transition.animatePositionAdditive(node: titleAccessoryPanelNode, offset: CGPoint(x: 0.0, y: -titleAccessoryPanelFrame.height))
        }
        
        if let secondaryInputPanelNode = self.secondaryInputPanelNode, let apparentSecondaryInputPanelFrame = apparentSecondaryInputPanelFrame, !secondaryInputPanelNode.frame.equalTo(apparentSecondaryInputPanelFrame) {
            if immediatelyLayoutSecondaryInputPanelAndAnimateAppearance {
                secondaryInputPanelNode.frame = apparentSecondaryInputPanelFrame.offsetBy(dx: 0.0, dy: apparentSecondaryInputPanelFrame.height + previousInputPanelBackgroundFrame.maxY - apparentSecondaryInputPanelFrame.maxY)
                secondaryInputPanelNode.alpha = 0.0
            }
            
            transition.updateFrame(node: secondaryInputPanelNode, frame: apparentSecondaryInputPanelFrame)
            transition.updateAlpha(node: secondaryInputPanelNode, alpha: 1.0)
        }
        
        if let accessoryPanelNode = self.accessoryPanelNode, let accessoryPanelFrame = accessoryPanelFrame, !accessoryPanelNode.frame.equalTo(accessoryPanelFrame) {
            if immediatelyLayoutAccessoryPanelAndAnimateAppearance {
                var startAccessoryPanelFrame = accessoryPanelFrame
                startAccessoryPanelFrame.origin.y = previousInputPanelOrigin.y
                accessoryPanelNode.frame = startAccessoryPanelFrame
                accessoryPanelNode.alpha = 0.0
            }
            
            transition.updateFrame(node: accessoryPanelNode, frame: accessoryPanelFrame)
            transition.updateAlpha(node: accessoryPanelNode, alpha: 1.0)
        }
        
        let inputContextPanelsFrame = CGRect(origin: CGPoint(x: 0.0, y: insets.top), size: CGSize(width: layout.size.width, height: max(0.0, layout.size.height - insets.bottom - inputPanelsHeight - insets.top)))
        let inputContextPanelsOverMainPanelFrame = CGRect(origin: CGPoint(x: 0.0, y: insets.top), size: CGSize(width: layout.size.width, height: max(0.0, layout.size.height - insets.bottom - (inputPanelSize == nil ? CGFloat(0.0) : inputPanelSize!.height) - insets.top)))
        
        if transition.isAnimated, let derivedLayoutState = self.derivedLayoutState {
            let offset = derivedLayoutState.inputContextPanelsOverMainPanelFrame.maxY - inputContextPanelsOverMainPanelFrame.maxY
            //transition.animateOffsetAdditive(node: self.inputContextPanelContainer, offset: -offset)
        }
        
        if let inputContextPanelNode = self.inputContextPanelNode {
            let panelFrame = inputContextPanelNode.placement == .overTextInput ? inputContextPanelsOverMainPanelFrame : inputContextPanelsFrame
            if immediatelyLayoutInputContextPanelAndAnimateAppearance {
                /*var startPanelFrame = panelFrame
                if let derivedLayoutState = self.derivedLayoutState {
                    let referenceFrame = inputContextPanelNode.placement == .overTextInput ? derivedLayoutState.inputContextPanelsOverMainPanelFrame : derivedLayoutState.inputContextPanelsFrame
                    startPanelFrame.origin.y = referenceFrame.maxY - panelFrame.height
                }*/
                inputContextPanelNode.frame = panelFrame
                inputContextPanelNode.updateLayout(size: panelFrame.size, leftInset: layout.safeInsets.left, rightInset: layout.safeInsets.right, bottomInset: 0.0, transition: .immediate, interfaceState: self.chatPresentationInterfaceState)
            }
            
            if !inputContextPanelNode.frame.equalTo(panelFrame) || inputContextPanelNode.theme !== self.chatPresentationInterfaceState.theme {
                transition.updateFrame(node: inputContextPanelNode, frame: panelFrame)
                inputContextPanelNode.updateLayout(size: panelFrame.size, leftInset: layout.safeInsets.left, rightInset: layout.safeInsets.right, bottomInset: 0.0, transition: transition, interfaceState: self.chatPresentationInterfaceState)
            }
        }
        
        if let overlayContextPanelNode = self.overlayContextPanelNode {
            let panelFrame = overlayContextPanelNode.placement == .overTextInput ? inputContextPanelsOverMainPanelFrame : inputContextPanelsFrame
            if immediatelyLayoutOverlayContextPanelAndAnimateAppearance {
                overlayContextPanelNode.frame = panelFrame
                overlayContextPanelNode.updateLayout(size: panelFrame.size, leftInset: layout.safeInsets.left, rightInset: layout.safeInsets.right, bottomInset: 0.0, transition: .immediate, interfaceState: self.chatPresentationInterfaceState)
            } else if !overlayContextPanelNode.frame.equalTo(panelFrame) {
                transition.updateFrame(node: overlayContextPanelNode, frame: panelFrame)
                overlayContextPanelNode.updateLayout(size: panelFrame.size, leftInset: layout.safeInsets.left, rightInset: layout.safeInsets.right, bottomInset: 0.0, transition: transition, interfaceState: self.chatPresentationInterfaceState)
            }
        }
        
        if let inputNode = self.inputNode, let effectiveInputNodeHeight = effectiveInputNodeHeight, let inputNodeHeightAndOverflow = inputNodeHeightAndOverflow {
            let inputNodeHeight = effectiveInputNodeHeight + inputNodeHeightAndOverflow.1
            let inputNodeFrame = CGRect(origin: CGPoint(x: 0.0, y: layout.size.height - inputNodeHeight), size: CGSize(width: layout.size.width, height: inputNodeHeight))
            if immediatelyLayoutInputNodeAndAnimateAppearance {
                var adjustedForPreviousInputHeightFrame = inputNodeFrame
                var heightDifference = inputNodeHeight - previousInputHeight
                if previousInputHeight.isLessThanOrEqualTo(cleanInsets.bottom) {
                    heightDifference = inputNodeHeight
                }
                adjustedForPreviousInputHeightFrame.origin.y += heightDifference
                inputNode.frame = adjustedForPreviousInputHeightFrame
                transition.updateFrame(node: inputNode, frame: inputNodeFrame)
            } else {
                transition.updateFrame(node: inputNode, frame: inputNodeFrame)
            }
        }
        
        if let dismissedTitleAccessoryPanelNode = dismissedTitleAccessoryPanelNode {
            var dismissedPanelFrame = dismissedTitleAccessoryPanelNode.frame
            dismissedPanelFrame.origin.y = -dismissedPanelFrame.size.height
            transition.updateFrame(node: dismissedTitleAccessoryPanelNode, frame: dismissedPanelFrame, completion: { [weak dismissedTitleAccessoryPanelNode] _ in
                dismissedTitleAccessoryPanelNode?.removeFromSupernode()
            })
        }
        
        if let inputPanelNode = self.inputPanelNode,
            let apparentInputPanelFrame = apparentInputPanelFrame,
            !inputPanelNode.frame.equalTo(apparentInputPanelFrame) {
            if immediatelyLayoutInputPanelAndAnimateAppearance {
                inputPanelNode.frame = apparentInputPanelFrame.offsetBy(dx: 0.0, dy: apparentInputPanelFrame.height + previousInputPanelBackgroundFrame.maxY - apparentInputBackgroundFrame.maxY)
                inputPanelNode.alpha = 0.0
            }
            if !transition.isAnimated {
                inputPanelNode.layer.removeAllAnimations()
                if let currentDismissedInputPanelNode = self.currentDismissedInputPanelNode, inputPanelNode is ChatSearchInputPanelNode {
                    currentDismissedInputPanelNode.layer.removeAllAnimations()
                }
            }
            if inputPanelNodeHandlesTransition {
                inputPanelNode.frame = apparentInputPanelFrame
                inputPanelNode.alpha = 1.0
            } else {
                transition.updateFrame(node: inputPanelNode, frame: apparentInputPanelFrame)
                transition.updateAlpha(node: inputPanelNode, alpha: 1.0)
            }
        }
        
        if let dismissedInputPanelNode = dismissedInputPanelNode, dismissedInputPanelNode !== self.secondaryInputPanelNode {
            var frameCompleted = false
            var alphaCompleted = false
            self.currentDismissedInputPanelNode = dismissedInputPanelNode
            let completed = { [weak self, weak dismissedInputPanelNode] in
                guard let strongSelf = self, let dismissedInputPanelNode = dismissedInputPanelNode else {
                    return
                }
                if strongSelf.currentDismissedInputPanelNode === dismissedInputPanelNode {
                    strongSelf.currentDismissedInputPanelNode = nil
                }
                if strongSelf.inputPanelNode === dismissedInputPanelNode {
                    return
                }
                if frameCompleted && alphaCompleted {
                    dismissedInputPanelNode.removeFromSupernode()
                }
            }
            let transitionTargetY = layout.size.height - insets.bottom
            transition.updateFrame(node: dismissedInputPanelNode, frame: CGRect(origin: CGPoint(x: 0.0, y: transitionTargetY), size: dismissedInputPanelNode.frame.size), completion: { _ in
                frameCompleted = true
                completed()
            })
            
            transition.updateAlpha(node: dismissedInputPanelNode, alpha: 0.0, completion: { _ in
                alphaCompleted = true
                completed()
            })
        }
        
        if let dismissedSecondaryInputPanelNode = dismissedSecondaryInputPanelNode, dismissedSecondaryInputPanelNode !== self.inputPanelNode {
            var frameCompleted = false
            var alphaCompleted = false
            let completed = { [weak self, weak dismissedSecondaryInputPanelNode] in
                if let strongSelf = self, let dismissedSecondaryInputPanelNode = dismissedSecondaryInputPanelNode, strongSelf.secondaryInputPanelNode === dismissedSecondaryInputPanelNode {
                    return
                }
                if frameCompleted && alphaCompleted {
                    dismissedSecondaryInputPanelNode?.removeFromSupernode()
                }
            }
            let transitionTargetY = layout.size.height - insets.bottom
            transition.updateFrame(node: dismissedSecondaryInputPanelNode, frame: CGRect(origin: CGPoint(x: 0.0, y: transitionTargetY), size: dismissedSecondaryInputPanelNode.frame.size), completion: { _ in
                frameCompleted = true
                completed()
            })
            
            transition.updateAlpha(node: dismissedSecondaryInputPanelNode, alpha: 0.0, completion: { _ in
                alphaCompleted = true
                completed()
            })
        }
        
        if let dismissedAccessoryPanelNode = dismissedAccessoryPanelNode {
            var frameCompleted = false
            var alphaCompleted = false
            let completed = { [weak dismissedAccessoryPanelNode] in
                if frameCompleted && alphaCompleted {
                    dismissedAccessoryPanelNode?.removeFromSupernode()
                }
            }
            var transitionTargetY = layout.size.height - insets.bottom
            if let inputPanelFrame = inputPanelFrame {
                transitionTargetY = inputPanelFrame.minY
            }
            transition.updateFrame(node: dismissedAccessoryPanelNode, frame: CGRect(origin: CGPoint(x: 0.0, y: transitionTargetY), size: dismissedAccessoryPanelNode.frame.size), completion: { _ in
                frameCompleted = true
                completed()
            })
            
            transition.updateAlpha(node: dismissedAccessoryPanelNode, alpha: 0.0, completion: { _ in
                alphaCompleted = true
                completed()
            })
        }
        
        if let dismissedInputContextPanelNode = dismissedInputContextPanelNode {
            var frameCompleted = false
            var animationCompleted = false
            let completed = { [weak dismissedInputContextPanelNode] in
                if let dismissedInputContextPanelNode = dismissedInputContextPanelNode, frameCompleted, animationCompleted {
                    dismissedInputContextPanelNode.removeFromSupernode()
                }
            }
            let panelFrame = dismissedInputContextPanelNode.placement == .overTextInput ? inputContextPanelsOverMainPanelFrame : inputContextPanelsFrame
            if !dismissedInputContextPanelNode.frame.equalTo(panelFrame) {
                dismissedInputContextPanelNode.updateLayout(size: panelFrame.size, leftInset: layout.safeInsets.left, rightInset: layout.safeInsets.right, bottomInset: 0.0, transition: transition, interfaceState: self.chatPresentationInterfaceState)
                transition.updateFrame(node: dismissedInputContextPanelNode, frame: panelFrame, completion: { _ in
                    frameCompleted = true
                    completed()
                })
            } else {
                frameCompleted = true
            }
            
            dismissedInputContextPanelNode.animateOut(completion: {
                animationCompleted = true
                completed()
            })
        }
        
        if let dismissedOverlayContextPanelNode = dismissedOverlayContextPanelNode {
            var frameCompleted = false
            var animationCompleted = false
            let completed = { [weak dismissedOverlayContextPanelNode] in
                if let dismissedOverlayContextPanelNode = dismissedOverlayContextPanelNode, frameCompleted, animationCompleted {
                    dismissedOverlayContextPanelNode.removeFromSupernode()
                }
            }
            let panelFrame = inputContextPanelsFrame
            if false && !dismissedOverlayContextPanelNode.frame.equalTo(panelFrame) {
                transition.updateFrame(node: dismissedOverlayContextPanelNode, frame: panelFrame, completion: { _ in
                    frameCompleted = true
                    completed()
                })
            } else {
                frameCompleted = true
            }
            
            dismissedOverlayContextPanelNode.animateOut(completion: {
                animationCompleted = true
                completed()
            })
        }
        
        if let disappearingNode = self.disappearingNode {
            let targetY: CGFloat
            if cleanInsets.bottom.isLess(than: insets.bottom) {
                targetY = layout.size.height - insets.bottom
            } else {
                targetY = layout.size.height
            }
            transition.updateFrame(node: disappearingNode, frame: CGRect(origin: CGPoint(x: 0.0, y: targetY), size: CGSize(width: layout.size.width, height: max(insets.bottom, disappearingNode.bounds.size.height))))
        }
        if let dismissedInputNode = dismissedInputNode {
            self.disappearingNode = dismissedInputNode
            let targetY: CGFloat
            if cleanInsets.bottom.isLess(than: insets.bottom) {
                targetY = layout.size.height - insets.bottom
            } else {
                targetY = layout.size.height
            }
            transition.updateFrame(node: dismissedInputNode, frame: CGRect(origin: CGPoint(x: 0.0, y: targetY), size: CGSize(width: layout.size.width, height: max(insets.bottom, dismissedInputNode.bounds.size.height))), force: true, completion: { [weak self, weak dismissedInputNode] completed in
                if let dismissedInputNode = dismissedInputNode {
                    if let strongSelf = self {
                        if strongSelf.disappearingNode === dismissedInputNode {
                            strongSelf.disappearingNode = nil
                        }
                        if strongSelf.inputNode !== dismissedInputNode {
                            dismissedInputNode.alpha = 0.0
                            dismissedInputNode.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.2, completion: { [weak dismissedInputNode] completed in
                                if completed, let strongSelf = self, let dismissedInputNode = dismissedInputNode {
                                    if strongSelf.inputNode !== dismissedInputNode {
                                        dismissedInputNode.removeFromSupernode()
                                    }
                                }
                            })
                        }
                    } else {
                        dismissedInputNode.removeFromSupernode()
                    }
                }
            })
        }
        
        if let dismissAsOverlayCompletion = self.dismissAsOverlayCompletion {
            self.dismissAsOverlayCompletion = nil
            transition.updateBounds(node: self.navigateButtons, bounds: self.navigateButtons.bounds, force: true, completion: { _ in
                dismissAsOverlayCompletion()
            })
        }
        
        if let scheduledAnimateInAsOverlayFromNode = self.scheduledAnimateInAsOverlayFromNode {
            self.scheduledAnimateInAsOverlayFromNode = nil
            self.bounds = CGRect(origin: CGPoint(), size: self.bounds.size)
            let animatedTransition: ContainedViewLayoutTransition
            if case .animated = protoTransition {
                animatedTransition = protoTransition
            } else {
                animatedTransition = .animated(duration: 0.4, curve: .spring)
            }
            self.performAnimateInAsOverlay(from: scheduledAnimateInAsOverlayFromNode, transition: animatedTransition)
        }
        
        self.updatePlainInputSeparator(transition: transition)
        
        self.derivedLayoutState = ChatControllerNodeDerivedLayoutState(inputContextPanelsFrame: inputContextPanelsFrame, inputContextPanelsOverMainPanelFrame: inputContextPanelsOverMainPanelFrame, inputNodeHeight: inputNodeHeightAndOverflow?.0, upperInputPositionBound: inputNodeHeightAndOverflow?.0 != nil ? self.upperInputPositionBound : nil)
        
        //self.notifyTransitionCompletionListeners(transition: transition)
    }
    
    private func notifyTransitionCompletionListeners(transition: ContainedViewLayoutTransition) {
        if !self.onLayoutCompletions.isEmpty {
            let onLayoutCompletions = self.onLayoutCompletions
            self.onLayoutCompletions = []
            for completion in onLayoutCompletions {
                completion(transition)
            }
        }
    }
    
    private func chatPresentationInterfaceStateRequiresInputFocus(_ state: ChatPresentationInterfaceState) -> Bool {
        switch state.inputMode {
            case .text:
                if state.interfaceState.selectionState != nil {
                    return false
                } else {
                    return true
                }
            default:
                return false
        }
    }
    
    func updateChatPresentationInterfaceState(_ chatPresentationInterfaceState: ChatPresentationInterfaceState, transition: ContainedViewLayoutTransition, interactive: Bool, completion: @escaping (ContainedViewLayoutTransition) -> Void) {
        self.selectedMessages = chatPresentationInterfaceState.interfaceState.selectionState?.selectedIds
        
        if let textInputPanelNode = self.textInputPanelNode {
            self.chatPresentationInterfaceState = self.chatPresentationInterfaceState.updatedInterfaceState { $0.withUpdatedEffectiveInputState(textInputPanelNode.inputTextState) }
        }
        
        if self.chatPresentationInterfaceState != chatPresentationInterfaceState {
            self.onLayoutCompletions.append(completion)
            
            let themeUpdated = self.chatPresentationInterfaceState.theme !== chatPresentationInterfaceState.theme
            
            if self.chatPresentationInterfaceState.chatWallpaper != chatPresentationInterfaceState.chatWallpaper {
                self.backgroundImageDisposable.set(chatControllerBackgroundImageSignal(wallpaper: chatPresentationInterfaceState.chatWallpaper, mediaBox: self.context.sharedContext.accountManager.mediaBox, accountMediaBox: self.context.account.postbox.mediaBox).start(next: { [weak self] image in
                    if let strongSelf = self, let (image, final) = image {
                        strongSelf.backgroundNode.image = image
                    }
                }))
                self.backgroundNode.image = chatControllerBackgroundImage(theme: chatPresentationInterfaceState.theme, wallpaper: chatPresentationInterfaceState.chatWallpaper, mediaBox: context.sharedContext.accountManager.mediaBox, knockoutMode: self.context.sharedContext.immediateExperimentalUISettings.knockoutWallpaper)
                if case .gradient = chatPresentationInterfaceState.chatWallpaper {
                    self.backgroundNode.imageContentMode = .scaleToFill
                } else {
                    self.backgroundNode.imageContentMode = .scaleAspectFill
                }
                self.backgroundNode.motionEnabled = chatPresentationInterfaceState.chatWallpaper.settings?.motion ?? false
            }
            
            self.historyNode.verticalScrollIndicatorColor = UIColor(white: 0.5, alpha: 0.8)
            
            let updatedInputFocus = self.chatPresentationInterfaceStateRequiresInputFocus(self.chatPresentationInterfaceState) != self.chatPresentationInterfaceStateRequiresInputFocus(chatPresentationInterfaceState)
            let updateInputTextState = self.chatPresentationInterfaceState.interfaceState.effectiveInputState != chatPresentationInterfaceState.interfaceState.effectiveInputState
            self.chatPresentationInterfaceState = chatPresentationInterfaceState
            
            self.navigateButtons.update(theme: chatPresentationInterfaceState.theme, dateTimeFormat: chatPresentationInterfaceState.dateTimeFormat)
            
            if themeUpdated {
                if case let .color(color) = self.chatPresentationInterfaceState.chatWallpaper, UIColor(rgb: color).isEqual(self.chatPresentationInterfaceState.theme.chat.inputPanel.panelBackgroundColorNoWallpaper) {
                    self.inputPanelBackgroundNode.backgroundColor = self.chatPresentationInterfaceState.theme.chat.inputPanel.panelBackgroundColorNoWallpaper
                    self.usePlainInputSeparator = true
                } else {
                    self.inputPanelBackgroundNode.backgroundColor = self.chatPresentationInterfaceState.theme.chat.inputPanel.panelBackgroundColor
                    self.usePlainInputSeparator = false
                    self.plainInputSeparatorAlpha = nil
                }
                self.updatePlainInputSeparator(transition: .immediate)
                self.inputPanelBackgroundSeparatorNode.backgroundColor = self.chatPresentationInterfaceState.theme.chat.inputPanel.panelSeparatorColor
                
                self.navigationBarBackroundNode.backgroundColor = chatPresentationInterfaceState.theme.rootController.navigationBar.backgroundColor
                self.navigationBarSeparatorNode.backgroundColor = chatPresentationInterfaceState.theme.rootController.navigationBar.separatorColor
            }
            
            let keepSendButtonEnabled = chatPresentationInterfaceState.interfaceState.forwardMessageIds != nil || chatPresentationInterfaceState.interfaceState.editMessage != nil
            var extendedSearchLayout = false
            loop: for (_, result) in chatPresentationInterfaceState.inputQueryResults {
                if case let .contextRequestResult(peer, _) = result, peer != nil {
                    extendedSearchLayout = true
                    break loop
                }
            }
            
            if let textInputPanelNode = self.textInputPanelNode, updateInputTextState {
                textInputPanelNode.updateInputTextState(chatPresentationInterfaceState.interfaceState.effectiveInputState, keepSendButtonEnabled: keepSendButtonEnabled, extendedSearchLayout: extendedSearchLayout, accessoryItems: chatPresentationInterfaceState.inputTextPanelState.accessoryItems, animated: transition.isAnimated)
            } else {
                self.textInputPanelNode?.updateKeepSendButtonEnabled(keepSendButtonEnabled: keepSendButtonEnabled, extendedSearchLayout: extendedSearchLayout, animated: transition.isAnimated)
            }
            
            var restrictionText: String?
            if let peer = chatPresentationInterfaceState.renderedPeer?.peer, let restrictionTextValue = peer.restrictionText(platform: "ios", contentSettings: self.context.currentContentSettings.with { $0 }), !restrictionTextValue.isEmpty {
                restrictionText = restrictionTextValue
            } else if chatPresentationInterfaceState.isNotAccessible {
                if case .replyThread = self.chatLocation {
                    restrictionText = chatPresentationInterfaceState.strings.CommentsGroup_ErrorAccessDenied
                } else if let peer = chatPresentationInterfaceState.renderedPeer?.peer as? TelegramChannel, case .broadcast = peer.info {
                    restrictionText = chatPresentationInterfaceState.strings.Channel_ErrorAccessDenied
                } else {
                    restrictionText = chatPresentationInterfaceState.strings.Group_ErrorAccessDenied
                }
            }
            
            if let restrictionText = restrictionText {
                if self.restrictedNode == nil {
                    let restrictedNode = ChatRecentActionsEmptyNode(theme: chatPresentationInterfaceState.theme, chatWallpaper: chatPresentationInterfaceState.chatWallpaper, chatBubbleCorners: chatPresentationInterfaceState.bubbleCorners)
                    self.historyNodeContainer.supernode?.insertSubnode(restrictedNode, aboveSubnode: self.historyNodeContainer)
                    self.restrictedNode = restrictedNode
                }
                self.restrictedNode?.setup(title: "", text: processedPeerRestrictionText(restrictionText))
                self.historyNodeContainer.isHidden = true
                self.navigateButtons.isHidden = true
                self.loadingNode.isHidden = true
                self.emptyNode?.isHidden = true
            } else if let restrictedNode = self.restrictedNode {
                self.restrictedNode = nil
                restrictedNode.removeFromSupernode()
                self.historyNodeContainer.isHidden = false
                self.navigateButtons.isHidden = false
                self.loadingNode.isHidden = false
                self.emptyNode?.isHidden = false
            }
            
            var showNavigateButtons = true
            if let _ = chatPresentationInterfaceState.inputTextPanelState.mediaRecordingState {
                showNavigateButtons = false
            }
            transition.updateAlpha(node: self.navigateButtons, alpha: showNavigateButtons ? 1.0 : 0.0)
            
            if let openStickersDisposable = self.openStickersDisposable {
                if case .media = chatPresentationInterfaceState.inputMode {
                } else {
                    openStickersDisposable.dispose()
                    self.openStickersDisposable = nil
                }
            }
            
            let layoutTransition: ContainedViewLayoutTransition = transition
            
            let transitionIsAnimated: Bool
            if case .immediate = transition {
                transitionIsAnimated = false
            } else {
                transitionIsAnimated = true
            }
            
            if let _ = self.chatPresentationInterfaceState.search, let interfaceInteraction = self.interfaceInteraction {
                var activate = false
                if self.searchNavigationNode == nil {
                    activate = true
                    self.searchNavigationNode = ChatSearchNavigationContentNode(theme: self.chatPresentationInterfaceState.theme, strings: self.chatPresentationInterfaceState.strings, chatLocation: self.chatPresentationInterfaceState.chatLocation, interaction: interfaceInteraction)
                }
                self.navigationBar?.setContentNode(self.searchNavigationNode, animated: transitionIsAnimated)
                self.searchNavigationNode?.update(presentationInterfaceState: self.chatPresentationInterfaceState)
                if activate {
                    self.searchNavigationNode?.activate()
                }
            } else if let _ = self.searchNavigationNode {
                self.searchNavigationNode = nil
                self.navigationBar?.setContentNode(nil, animated: transitionIsAnimated)
            }
            
            if updatedInputFocus {
                if !self.ignoreUpdateHeight {
                    self.scheduleLayoutTransitionRequest(layoutTransition)
                }
                
                if self.chatPresentationInterfaceStateRequiresInputFocus(chatPresentationInterfaceState) {
                    self.ensureInputViewFocused()
                } else {
                    if let inputPanelNode = self.inputPanelNode as? ChatTextInputPanelNode {
                        if inputPanelNode.isFocused {
                            self.context.sharedContext.mainWindow?.simulateKeyboardDismiss(transition: .animated(duration: 0.5, curve: .spring))
                        }
                    }
                }
            } else {
                if !self.ignoreUpdateHeight {
                    if interactive {
                        if let scheduledLayoutTransitionRequest = self.scheduledLayoutTransitionRequest {
                            switch scheduledLayoutTransitionRequest.1 {
                                case .immediate:
                                    self.scheduleLayoutTransitionRequest(layoutTransition)
                                default:
                                    break
                            }
                        } else {
                            self.scheduleLayoutTransitionRequest(layoutTransition)
                        }
                    } else {
                        if let scheduledLayoutTransitionRequest = self.scheduledLayoutTransitionRequest {
                            switch scheduledLayoutTransitionRequest.1 {
                                case .immediate:
                                    self.requestLayout(layoutTransition)
                                case .animated:
                                    self.scheduleLayoutTransitionRequest(scheduledLayoutTransitionRequest.1)
                            }
                        } else {
                            self.requestLayout(layoutTransition)
                        }
                    }
                }
            }
        } else {
            completion(.immediate)
        }
        
        if self.reactionContainerNode.supernode == nil {
            self.addSubnode(self.reactionContainerNode)
        }
    }
    
    func updateAutomaticMediaDownloadSettings(_ settings: MediaAutoDownloadSettings) {
        self.historyNode.forEachItemNode { itemNode in
            if let itemNode = itemNode as? ChatMessageItemView {
                itemNode.updateAutomaticMediaDownloadSettings()
            }
        }
        self.historyNode.prefetchManager.updateAutoDownloadSettings(settings)
    }
    
    func updateStickerSettings(_ settings: ChatInterfaceStickerSettings) {
        self.historyNode.forEachItemNode { itemNode in
            if let itemNode = itemNode as? ChatMessageItemView {
                itemNode.updateStickerSettings()
            }
        }
    }
    
    var isInputViewFocused: Bool {
        if let inputPanelNode = self.inputPanelNode as? ChatTextInputPanelNode {
            return inputPanelNode.isFocused
        } else {
            return false
        }
    }
    
    func ensureInputViewFocused() {
        if let inputPanelNode = self.inputPanelNode as? ChatTextInputPanelNode {
            inputPanelNode.ensureFocused()
        }
    }
    
    @objc func tapGesture(_ recognizer: UITapGestureRecognizer) {
        if recognizer.state == .ended {
            self.dismissInput()
        }
    }
    
    func dismissInput() {
        if let _ = self.chatPresentationInterfaceState.inputTextPanelState.mediaRecordingState {
            return
        }
        
        switch self.chatPresentationInterfaceState.inputMode {
        case .none:
            break
        case .inputButtons:
            self.interfaceInteraction?.updateInputModeAndDismissedButtonKeyboardMessageId({ state in
                return (.none, state.keyboardButtonsMessage?.id ?? state.interfaceState.messageActionsState.closedButtonKeyboardMessageId)
            })
        default:
            self.interfaceInteraction?.updateInputModeAndDismissedButtonKeyboardMessageId({ state in
                return (.none, state.interfaceState.messageActionsState.closedButtonKeyboardMessageId)
            })
        }
        self.searchNavigationNode?.deactivate()
        
        self.view.window?.endEditing(true)
    }
    
    private func scheduleLayoutTransitionRequest(_ transition: ContainedViewLayoutTransition) {
        let requestId = self.scheduledLayoutTransitionRequestId
        self.scheduledLayoutTransitionRequestId += 1
        self.scheduledLayoutTransitionRequest = (requestId, transition)
        (self.view as? UITracingLayerView)?.schedule(layout: { [weak self] in
            if let strongSelf = self {
                if let (currentRequestId, currentRequestTransition) = strongSelf.scheduledLayoutTransitionRequest, currentRequestId == requestId {
                    strongSelf.scheduledLayoutTransitionRequest = nil
                    strongSelf.requestLayout(currentRequestTransition)
                }
            }
        })
        self.setNeedsLayout()
    }
    
    func loadInputPanels(theme: PresentationTheme, strings: PresentationStrings, fontSize: PresentationFontSize) {
        if self.inputMediaNode == nil {
            let peerId: PeerId? = self.chatPresentationInterfaceState.chatLocation.peerId
            let inputNode = ChatMediaInputNode(context: self.context, peerId: peerId, chatLocation: self.chatPresentationInterfaceState.chatLocation, controllerInteraction: self.controllerInteraction, chatWallpaper: self.chatPresentationInterfaceState.chatWallpaper, theme: theme, strings: strings, fontSize: fontSize, gifPaneIsActiveUpdated: { [weak self] value in
                if let strongSelf = self, let interfaceInteraction = strongSelf.interfaceInteraction {
                    interfaceInteraction.updateInputModeAndDismissedButtonKeyboardMessageId { state in
                        if case let .media(_, expanded) = state.inputMode {
                            if value {
                                return (.media(mode: .gif, expanded: expanded), nil)
                            } else {
                                return (.media(mode: .other, expanded: expanded), nil)
                            }
                        } else {
                            return (state.inputMode, nil)
                        }
                    }
                }
            })
            inputNode.interfaceInteraction = interfaceInteraction
            self.inputMediaNode = inputNode
            if let (validLayout, _) = self.validLayout {
                let _ = inputNode.updateLayout(width: validLayout.size.width, leftInset: validLayout.safeInsets.left, rightInset: validLayout.safeInsets.right, bottomInset: validLayout.intrinsicInsets.bottom, standardInputHeight: validLayout.standardInputHeight, inputHeight: validLayout.inputHeight ?? 0.0, maximumHeight: validLayout.standardInputHeight, inputPanelHeight: 44.0, transition: .immediate, interfaceState: self.chatPresentationInterfaceState, deviceMetrics: validLayout.deviceMetrics, isVisible: false)
            }
            
            self.textInputPanelNode?.loadTextInputNodeIfNeeded()
        }
    }
    
    func currentInputPanelFrame() -> CGRect? {
        return self.inputPanelNode?.frame
    }
    
    func sendButtonFrame() -> CGRect? {
        if let mediaPreviewNode = self.inputPanelNode as? ChatRecordingPreviewInputPanelNode {
            return mediaPreviewNode.convert(mediaPreviewNode.sendButton.frame, to: self)
        } else if let frame = self.textInputPanelNode?.actionButtons.frame {
            return self.textInputPanelNode?.convert(frame, to: self)
        } else {
            return nil
        }
    }
    
    func textInputNode() -> EditableTextNode? {
        return self.textInputPanelNode?.textInputNode
    }
    
    func updateRecordedMediaDeleted(_ isDeleted: Bool) {
        self.textInputPanelNode?.isMediaDeleted = isDeleted
    }
    
    func frameForVisibleArea() -> CGRect {
        let rect = CGRect(origin: CGPoint(x: self.visibleAreaInset.left, y: self.visibleAreaInset.top), size: CGSize(width: self.bounds.size.width - self.visibleAreaInset.left - self.visibleAreaInset.right, height: self.bounds.size.height - self.visibleAreaInset.top - self.visibleAreaInset.bottom))
        if let containerNode = self.containerNode {
            return containerNode.view.convert(rect, to: self.view)
        } else {
            return rect
        }
    }
    
    func frameForInputPanelAccessoryButton(_ item: ChatTextInputAccessoryItem) -> CGRect? {
        if let textInputPanelNode = self.textInputPanelNode, self.inputPanelNode === textInputPanelNode {
            return textInputPanelNode.frameForAccessoryButton(item).flatMap {
                return $0.offsetBy(dx: textInputPanelNode.frame.minX, dy: textInputPanelNode.frame.minY)
            }
        }
        return nil
    }
    
    func frameForInputActionButton() -> CGRect? {
        if let textInputPanelNode = self.textInputPanelNode, self.inputPanelNode === textInputPanelNode {
            return textInputPanelNode.frameForInputActionButton().flatMap {
                return $0.offsetBy(dx: textInputPanelNode.frame.minX, dy: textInputPanelNode.frame.minY)
            }
        } else if let recordingPreviewPanelNode = self.inputPanelNode as? ChatRecordingPreviewInputPanelNode {
            return recordingPreviewPanelNode.frameForInputActionButton().flatMap {
                return $0.offsetBy(dx: recordingPreviewPanelNode.frame.minX, dy: recordingPreviewPanelNode.frame.minY)
            }
        }
        return nil
    }
    
    func frameForAttachmentButton() -> CGRect? {
        if let textInputPanelNode = self.textInputPanelNode, self.inputPanelNode === textInputPanelNode {
            return textInputPanelNode.frameForAttachmentButton().flatMap {
                return $0.offsetBy(dx: textInputPanelNode.frame.minX, dy: textInputPanelNode.frame.minY)
            }
        }
        return nil
    }
    
    func frameForStickersButton() -> CGRect? {
        if let textInputPanelNode = self.textInputPanelNode, self.inputPanelNode === textInputPanelNode {
            return textInputPanelNode.frameForStickersButton().flatMap {
                return $0.offsetBy(dx: textInputPanelNode.frame.minX, dy: textInputPanelNode.frame.minY)
            }
        }
        return nil
    }
    
    var isTextInputPanelActive: Bool {
        return self.inputPanelNode is ChatTextInputPanelNode
    }
    
    var currentTextInputLanguage: String? {
        return self.textInputPanelNode?.effectiveInputLanguage
    }
    
    func getWindowInputAccessoryHeight() -> CGFloat {
        var height = self.inputPanelBackgroundNode.bounds.size.height
        if case .overlay = self.chatPresentationInterfaceState.mode {
            height += 8.0
        }
        return height
    }
    
    func animateInAsOverlay(from fromNode: ASDisplayNode?, completion: @escaping () -> Void) {
        if let inputPanelNode = self.inputPanelNode as? ChatTextInputPanelNode, let fromNode = fromNode {
            if inputPanelNode.isFocused {
                self.performAnimateInAsOverlay(from: fromNode, transition: .animated(duration: 0.4, curve: .spring))
                completion()
            } else {
                self.animateInAsOverlayCompletion = completion
                self.bounds = CGRect(origin: CGPoint(x: -self.bounds.size.width * 2.0, y: 0.0), size: self.bounds.size)
                self.scheduledAnimateInAsOverlayFromNode = fromNode
                self.scheduleLayoutTransitionRequest(.immediate)
                inputPanelNode.ensureFocused()
            }
        } else {
            self.performAnimateInAsOverlay(from: fromNode, transition: .animated(duration: 0.4, curve: .spring))
            completion()
        }
    }
    
    private func performAnimateInAsOverlay(from fromNode: ASDisplayNode?, transition: ContainedViewLayoutTransition) {
        if let containerBackgroundNode = self.containerBackgroundNode, let fromNode = fromNode {
            let fromFrame = fromNode.view.convert(fromNode.bounds, to: self.view)
            containerBackgroundNode.supernode?.insertSubnode(fromNode, aboveSubnode: containerBackgroundNode)
            fromNode.frame = fromFrame
            
            fromNode.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.3, removeOnCompletion: false, completion: { [weak fromNode] _ in
                fromNode?.removeFromSupernode()
            })
            
            transition.animateFrame(node: containerBackgroundNode, from: CGRect(origin: fromFrame.origin.offsetBy(dx: -8.0, dy: -8.0), size: CGSize(width: fromFrame.size.width + 8.0 * 2.0, height: fromFrame.size.height + 8.0 + 20.0)))
            containerBackgroundNode.layer.animateSpring(from: 0.99 as NSNumber, to: 1.0 as NSNumber, keyPath: "transform.scale", duration: 0.5, initialVelocity: 1.0, damping: 10.0, removeOnCompletion: true, additive: false, completion: nil)
            
            if let containerNode = self.containerNode {
                containerNode.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.2)
                transition.animateFrame(node: containerNode, from: fromFrame)
                transition.animatePositionAdditive(node: self.backgroundNode, offset: CGPoint(x: 0.0, y: -containerNode.bounds.size.height))
                transition.animatePositionAdditive(node: self.historyNodeContainer, offset: CGPoint(x: 0.0, y: -containerNode.bounds.size.height))
                
                transition.updateFrame(node: fromNode, frame: CGRect(origin: containerNode.frame.origin, size: fromNode.frame.size))
            }
            
            self.backgroundEffectNode?.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.3)
            
            let inputPanelsOffset = self.bounds.size.height - self.inputPanelBackgroundNode.frame.minY
            transition.animateFrame(node: self.inputPanelBackgroundNode, from: self.inputPanelBackgroundNode.frame.offsetBy(dx: 0.0, dy: inputPanelsOffset))
            transition.animateFrame(node: self.inputPanelBackgroundSeparatorNode, from: self.inputPanelBackgroundSeparatorNode.frame.offsetBy(dx: 0.0, dy: inputPanelsOffset))
            if let inputPanelNode = self.inputPanelNode {
                transition.animateFrame(node: inputPanelNode, from: inputPanelNode.frame.offsetBy(dx: 0.0, dy: inputPanelsOffset))
            }
            if let accessoryPanelNode = self.accessoryPanelNode {
                transition.animateFrame(node: accessoryPanelNode, from: accessoryPanelNode.frame.offsetBy(dx: 0.0, dy: inputPanelsOffset))
            }
            
            if let _ = self.scrollContainerNode {
                containerBackgroundNode.layer.animateSpring(from: 0.99 as NSNumber, to: 1.0 as NSNumber, keyPath: "transform.scale", duration: 0.8, initialVelocity: 100.0, damping: 80.0, removeOnCompletion: true, additive: false, completion: nil)
                self.containerNode?.layer.animateSpring(from: 0.99 as NSNumber, to: 1.0 as NSNumber, keyPath: "transform.scale", duration: 0.8, initialVelocity: 100.0, damping: 80.0, removeOnCompletion: true, additive: false, completion: nil)
            }
            
            self.navigateButtons.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.3)
        } else {
            self.backgroundEffectNode?.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.3)
            if let containerNode = self.containerNode {
                containerNode.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.2)
            }
        }
        
        if let animateInAsOverlayCompletion = self.animateInAsOverlayCompletion {
            self.animateInAsOverlayCompletion = nil
            animateInAsOverlayCompletion()
        }
    }
    
    func animateDismissAsOverlay(completion: @escaping () -> Void) {
        if let containerNode = self.containerNode {
            self.dismissedAsOverlay = true
            self.dismissAsOverlayLayout = self.validLayout?.0
            
            self.backgroundEffectNode?.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.27, removeOnCompletion: false)
            
            self.containerBackgroundNode?.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.27, removeOnCompletion: false)
            self.containerBackgroundNode?.layer.animateScale(from: 1.0, to: 0.6, duration: 0.29, removeOnCompletion: false)
            
            containerNode.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.27, removeOnCompletion: false)
            containerNode.layer.animateScale(from: 1.0, to: 0.6, duration: 0.29, removeOnCompletion: false)
            
            self.navigateButtons.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.25, removeOnCompletion: false)
            
            self.dismissAsOverlayCompletion = completion
            self.scheduleLayoutTransitionRequest(.animated(duration: 0.4, curve: .spring))
            self.dismissInput()
        } else {
            completion()
        }
    }
    
    func scrollViewDidEndDragging(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) {
        if let scrollContainerNode = self.scrollContainerNode, scrollView === scrollContainerNode.view {
            if abs(scrollView.contentOffset.y) > 50.0 {
                scrollView.isScrollEnabled = false
                self.dismissAsOverlay()
            }
        }
    }
    
    func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {
        if let scrollContainerNode = self.scrollContainerNode, scrollView === scrollContainerNode.view {
            if self.hapticFeedback == nil {
                self.hapticFeedback = HapticFeedback()
            }
            self.hapticFeedback?.prepareImpact()
        }
    }
    
    func scrollViewDidScroll(_ scrollView: UIScrollView) {
        if let scrollContainerNode = self.scrollContainerNode, scrollView === scrollContainerNode.view {
            let dismissStatus = abs(scrollView.contentOffset.y) > 50.0
            if dismissStatus != self.scrollViewDismissStatus {
                self.scrollViewDismissStatus = dismissStatus
                if !self.dismissedAsOverlay {
                    self.hapticFeedback?.impact()
                }
            }
        }
    }
    
    func displayMessageActionSheet(stableId: UInt32?, sheetActions: [ChatMessageContextMenuSheetAction]?, displayContextMenuController: (ContextMenuController, ASDisplayNode, CGRect)?) {
        self.controllerInteraction.contextHighlightedState = stableId.flatMap { ChatInterfaceHighlightedState(messageStableId: $0) }
        self.updateItemNodesContextHighlightedStates(animated: true, sheetActions: sheetActions, displayContextMenuController: displayContextMenuController)
    }
    
    private func updateItemNodesContextHighlightedStates(animated: Bool, sheetActions: [ChatMessageContextMenuSheetAction]?, displayContextMenuController: (ContextMenuController, ASDisplayNode, CGRect)?) {
        self.historyNode.forEachItemNode { itemNode in
            if let itemNode = itemNode as? ChatMessageItemView {
                itemNode.updateHighlightedState(animated: animated)
            }
        }
        
        let transition: ContainedViewLayoutTransition = .animated(duration: 0.35, curve: .spring)
        var animateIn = false
        
        self.historyNode.updateNodeHighlightsAnimated(animated)
        if self.messageActionSheetController?.1 != self.controllerInteraction.contextHighlightedState?.messageStableId {
            if let (controller, _) = self.messageActionSheetController {
                controller.controllerNode.animateOut(transition: transition, completion: { [weak controller] in
                    controller?.dismiss()
                })
                self.messageActionSheetController = nil
                self.messageActionSheetControllerAdditionalInset = nil
                self.accessibilityElementsHidden = false
            }
            if let stableId = self.controllerInteraction.contextHighlightedState?.messageStableId {
                let contextMenuController = displayContextMenuController?.0
                let controller = ChatMessageActionSheetController(theme: self.chatPresentationInterfaceState.theme, actions: sheetActions ?? [], dismissed: { [weak self, weak contextMenuController] in
                    self?.displayMessageActionSheet(stableId: nil, sheetActions: nil, displayContextMenuController: nil)
                    contextMenuController?.dismiss()
                }, associatedController: contextMenuController)
                self.messageActionSheetController = (controller, stableId)
                self.accessibilityElementsHidden = true
                if let sheetActions = sheetActions, !sheetActions.isEmpty, let (layout, _) = self.validLayout {
                    var isSlideOver = false
                    if case .compact = layout.metrics.widthClass, case .regular = layout.metrics.heightClass {
                        isSlideOver = true
                    }
                    if isSlideOver {
                        self.controllerInteraction.presentController(controller, nil)
                    } else {
                        self.controllerInteraction.presentGlobalOverlayController(controller, nil)
                    }
                }
                animateIn = true
            }
        }
        
        if let (layout, navigationBarHeight) = self.validLayout {
            let globalSelfOrigin = self.view.convert(CGPoint(), to: nil)
            let menuHeight = self.messageActionSheetController?.0.controllerNode.updateLayout(layout: layout, horizontalOrigin: globalSelfOrigin.x, transition: .immediate)
            if let stableId = self.messageActionSheetController?.1 {
                var resultItemNode: ListViewItemNode?
                var resultItemSubnode: ASDisplayNode?
                self.historyNode.forEachItemNode { itemNode in
                    if let itemNode = itemNode as? ChatMessageItemView, let item = itemNode.item {
                        switch item.content {
                            case let .message(message, _, _, _):
                                if message.stableId == stableId {
                                    resultItemNode = itemNode
                                }
                            case let .group(messages):
                                for (message, _, _, _) in messages {
                                    if message.stableId == stableId {
                                        resultItemNode = itemNode
                                        if let media = message.media.first {
                                            resultItemSubnode = itemNode.transitionNode(id: message.id, media: media)?.0
                                        }
                                        break
                                    }
                                }
                        }
                    }
                }
                if let resultItemNode = resultItemNode, let menuHeight = menuHeight {
                    var resultItemFrame = resultItemNode.frame
                    if let resultItemSubnode = resultItemSubnode {
                        resultItemFrame = resultItemSubnode.view.convert(resultItemSubnode.bounds, to: resultItemNode.view.superview)
                    }
                    if resultItemFrame.size.height < self.historyNode.bounds.size.height - self.historyNode.insets.top - self.historyNode.insets.bottom {
                        if resultItemFrame.minY < menuHeight {
                            messageActionSheetControllerAdditionalInset = menuHeight - resultItemFrame.minY
                        }
                    }
                }
            }
            self.containerLayoutUpdated(layout, navigationBarHeight: navigationBarHeight, transition: transition, listViewTransaction: { updateSizeAndInsets, additionalScrollDistance, scrollToTop, completion in
                self.historyNode.updateLayout(transition: transition, updateSizeAndInsets: updateSizeAndInsets, additionalScrollDistance: additionalScrollDistance, scrollToTop: scrollToTop, completion: completion)
            })
            if animateIn, let controller = self.messageActionSheetController?.0 {
                controller.controllerNode.animateIn(transition: transition)
            }
            if let menuHeight = menuHeight {
                if let _ = self.controllerInteraction.contextHighlightedState?.messageStableId, let (menuController, node, frame) = displayContextMenuController {
                    self.controllerInteraction.presentController(menuController, ContextMenuControllerPresentationArguments(sourceNodeAndRect: { [weak self] in
                        if let strongSelf = self {
                            var bounds = strongSelf.bounds
                            bounds.size.height -= menuHeight
                            return (node, frame, strongSelf, bounds)
                        } else {
                            return nil
                        }
                    }))
                }
            }
        }
    }
    
    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
        if let _ = self.messageActionSheetController {
            self.displayMessageActionSheet(stableId: nil, sheetActions: nil, displayContextMenuController: nil)
            return self.navigationBar?.view
        }
        
        switch self.chatPresentationInterfaceState.mode {
        case .standard(previewing: true):
            if let result = self.navigateButtons.hitTest(self.view.convert(point, to: self.navigateButtons.view), with: event) {
                return result
            }
            if self.bounds.contains(point) {
                return self.historyNode.view
            }
        default:
            break
        }
        
        return nil
    }
    
    @objc func topDimNodeTapGesture(_ recognizer: UITapGestureRecognizer) {
        if case .ended = recognizer.state {
            self.interfaceInteraction?.updateInputModeAndDismissedButtonKeyboardMessageId { state in
                if case let .media(mode, expanded) = state.inputMode, expanded != nil {
                    return (.media(mode: mode, expanded: nil), nil)
                } else {
                    return (state.inputMode, nil)
                }
            }
        }
    }
    
    func scrollToTop() {
        if case let .media(_, maybeExpanded) = self.chatPresentationInterfaceState.inputMode, maybeExpanded != nil {
            self.interfaceInteraction?.updateInputModeAndDismissedButtonKeyboardMessageId { state in
                if case let .media(mode, expanded) = state.inputMode, expanded != nil {
                    return (.media(mode: mode, expanded: expanded), nil)
                } else {
                    return (state.inputMode, nil)
                }
            }
        } else {
            self.historyNode.scrollScreenToTop()
        }
    }
    
    @objc func backgroundEffectTap(_ recognizer: UITapGestureRecognizer) {
        if case .ended = recognizer.state {
            self.dismissAsOverlay()
        }
    }
    
    func updateDropInteraction(isActive: Bool) {
        if isActive {
            if self.dropDimNode == nil {
                let dropDimNode = ASDisplayNode()
                dropDimNode.backgroundColor = self.chatPresentationInterfaceState.theme.chatList.backgroundColor.withAlphaComponent(0.35)
                self.dropDimNode = dropDimNode
                self.addSubnode(dropDimNode)
                if let (layout, _) = self.validLayout {
                    dropDimNode.frame = CGRect(origin: CGPoint(), size: layout.size)
                    dropDimNode.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.25)
                }
            }
        } else if let dropDimNode = self.dropDimNode {
            self.dropDimNode = nil
            dropDimNode.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.3, removeOnCompletion: false, completion: { [weak dropDimNode] _ in
                dropDimNode?.removeFromSupernode()
            })
        }
    }
    
    private func updateLayoutInternal(transition: ContainedViewLayoutTransition) {
        if let (layout, navigationHeight) = self.validLayout {
            self.containerLayoutUpdated(layout, navigationBarHeight: navigationHeight, transition: transition, listViewTransaction: { updateSizeAndInsets, additionalScrollDistance, scrollToTop, completion in
                self.historyNode.updateLayout(transition: transition, updateSizeAndInsets: updateSizeAndInsets, additionalScrollDistance: additionalScrollDistance, scrollToTop: scrollToTop, completion: completion)
            })
        }
    }
    
    private func panGestureBegan(location: CGPoint) {
        guard let derivedLayoutState = self.derivedLayoutState, let (validLayout, _) = self.validLayout else {
            return
        }
        if self.upperInputPositionBound != nil {
            return
        }
        if let inputHeight = validLayout.inputHeight {
            if !inputHeight.isZero {
                return
            }
        }
        
        let keyboardGestureBeginLocation = location
        let accessoryHeight = self.getWindowInputAccessoryHeight()
        if let inputHeight = derivedLayoutState.inputNodeHeight, !inputHeight.isZero, keyboardGestureBeginLocation.y < validLayout.size.height - inputHeight - accessoryHeight {
            var enableGesture = true
            if let view = self.view.hitTest(location, with: nil) {
                if doesViewTreeDisableInteractiveTransitionGestureRecognizer(view) {
                    enableGesture = false
                }
            }
            if enableGesture {
                self.keyboardGestureBeginLocation = keyboardGestureBeginLocation
                self.keyboardGestureAccessoryHeight = accessoryHeight
            }
        }
    }
    
    private func panGestureMoved(location: CGPoint) {
        if let keyboardGestureBeginLocation = self.keyboardGestureBeginLocation {
            let currentLocation = location
            let deltaY = keyboardGestureBeginLocation.y - location.y
            if deltaY * deltaY >= 3.0 * 3.0 || self.upperInputPositionBound != nil {
                self.upperInputPositionBound = currentLocation.y + (self.keyboardGestureAccessoryHeight ?? 0.0)
                self.updateLayoutInternal(transition: .immediate)
            }
        }
    }
    
    private func panGestureEnded(location: CGPoint, velocity: CGPoint?) {
        guard let derivedLayoutState = self.derivedLayoutState, let (validLayout, _) = self.validLayout else {
            return
        }
        if self.keyboardGestureBeginLocation == nil {
            return
        }
        
        self.keyboardGestureBeginLocation = nil
        let currentLocation = location
        
        let accessoryHeight = (self.keyboardGestureAccessoryHeight ?? 0.0)
        
        var canDismiss = false
        if let upperInputPositionBound = self.upperInputPositionBound, upperInputPositionBound >= validLayout.size.height - accessoryHeight {
            canDismiss = true
        } else if let velocity = velocity, velocity.y > 100.0 {
            canDismiss = true
        }
        
        if canDismiss, let inputHeight = derivedLayoutState.inputNodeHeight, currentLocation.y + (self.keyboardGestureAccessoryHeight ?? 0.0) > validLayout.size.height - inputHeight {
            self.upperInputPositionBound = nil
            self.dismissInput()
        } else {
            self.upperInputPositionBound = nil
            self.updateLayoutInternal(transition: .animated(duration: 0.25, curve: .spring))
        }
    }
    
    func cancelInteractiveKeyboardGestures() {
        self.panRecognizer?.isEnabled = false
        self.panRecognizer?.isEnabled = true
        
        if self.upperInputPositionBound != nil {
            self.updateLayoutInternal(transition: .animated(duration: 0.25, curve: .spring))
        }
        
        if self.keyboardGestureBeginLocation != nil {
            self.keyboardGestureBeginLocation = nil
        }
    }
    
    func openStickers() {
        if let inputMediaNode = self.inputMediaNode, self.openStickersDisposable == nil {
            self.openStickersDisposable = (inputMediaNode.ready
            |> take(1)
            |> deliverOnMainQueue).start(next: { [weak self] in
                self?.openStickersDisposable = nil
                self?.interfaceInteraction?.updateInputModeAndDismissedButtonKeyboardMessageId({ state in
                    return (.media(mode: .other, expanded: nil), state.interfaceState.messageActionsState.closedButtonKeyboardMessageId)
                })
            })
        }
    }
    
    func sendCurrentMessage(silentPosting: Bool? = nil, scheduleTime: Int32? = nil, completion: @escaping () -> Void = {}) {
        if let textInputPanelNode = self.inputPanelNode as? ChatTextInputPanelNode {
            if textInputPanelNode.textInputNode?.isFirstResponder() ?? false {
                Keyboard.applyAutocorrection()
            }
            
            var effectivePresentationInterfaceState = self.chatPresentationInterfaceState
            if let textInputPanelNode = self.textInputPanelNode {
                effectivePresentationInterfaceState = effectivePresentationInterfaceState.updatedInterfaceState { $0.withUpdatedEffectiveInputState(textInputPanelNode.inputTextState) }
            }
            
            if let _ = effectivePresentationInterfaceState.interfaceState.editMessage {
                self.interfaceInteraction?.editMessage()
            } else {
                var isScheduledMessages = false
                if case .scheduledMessages = effectivePresentationInterfaceState.subject {
                    isScheduledMessages = true
                }
                
                if let _ = effectivePresentationInterfaceState.slowmodeState, !isScheduledMessages && scheduleTime == nil {
                    if let rect = self.frameForInputActionButton() {
                        self.interfaceInteraction?.displaySlowmodeTooltip(self, rect)
                    }
                    return
                }
                
                let timestamp = CACurrentMediaTime()
                if self.lastSendTimestamp + 0.15 > timestamp {
                    return
                }
                self.lastSendTimestamp = timestamp
                
                self.updateTypingActivity(false)
                
                var messages: [EnqueueMessage] = []
                
                let effectiveInputText = effectivePresentationInterfaceState.interfaceState.composeInputState.inputText
                let trimmedInputText = effectiveInputText.string.trimmingCharacters(in: .whitespacesAndNewlines)
                let peerId = effectivePresentationInterfaceState.chatLocation.peerId
                if peerId.namespace != Namespaces.Peer.SecretChat, let interactiveEmojis = self.interactiveEmojis, interactiveEmojis.emojis.contains(trimmedInputText) {
                    messages.append(.message(text: "", attributes: [], mediaReference: AnyMediaReference.standalone(media: TelegramMediaDice(emoji: trimmedInputText)), replyToMessageId: self.chatPresentationInterfaceState.interfaceState.replyMessageId, localGroupingKey: nil))
                } else {
                    let inputText = convertMarkdownToAttributes(effectiveInputText)
                    
                    for text in breakChatInputText(trimChatInputText(inputText)) {
                        if text.length != 0 {
                            var attributes: [MessageAttribute] = []
                            let entities = generateTextEntities(text.string, enabledTypes: .all, currentEntities: generateChatInputTextEntities(text))
                            if !entities.isEmpty {
                                attributes.append(TextEntitiesMessageAttribute(entities: entities))
                            }
                            var webpage: TelegramMediaWebpage?
                            if self.chatPresentationInterfaceState.interfaceState.composeDisableUrlPreview != nil {
                                attributes.append(OutgoingContentInfoMessageAttribute(flags: [.disableLinkPreviews]))
                            } else {
                                webpage = self.chatPresentationInterfaceState.urlPreview?.1
                            }
                            messages.append(.message(text: text.string, attributes: attributes, mediaReference: webpage.flatMap(AnyMediaReference.standalone), replyToMessageId: self.chatPresentationInterfaceState.interfaceState.replyMessageId, localGroupingKey: nil))
                        }
                    }

                    var forwardingToSameChat = false
                    if case let .peer(id) = self.chatPresentationInterfaceState.chatLocation, id.namespace == Namespaces.Peer.CloudUser, id != self.context.account.peerId, let forwardMessageIds = self.chatPresentationInterfaceState.interfaceState.forwardMessageIds, forwardMessageIds.count == 1 {
                        for messageId in forwardMessageIds {
                            if messageId.peerId == id {
                                forwardingToSameChat = true
                            }
                        }
                    }
                    if !messages.isEmpty && forwardingToSameChat {
                        self.controllerInteraction.displaySwipeToReplyHint()
                    }
                }
                
                if !messages.isEmpty || self.chatPresentationInterfaceState.interfaceState.forwardMessageIds != nil {
                    self.setupSendActionOnViewUpdate({ [weak self] in
                        if let strongSelf = self, let textInputPanelNode = strongSelf.inputPanelNode as? ChatTextInputPanelNode {
                            strongSelf.ignoreUpdateHeight = true
                            textInputPanelNode.text = ""
                            strongSelf.requestUpdateChatInterfaceState(false, true, { $0.withUpdatedReplyMessageId(nil).withUpdatedForwardMessageIds(nil).withUpdatedComposeDisableUrlPreview(nil) })
                            strongSelf.ignoreUpdateHeight = false
                        }
                    })
                    completion()
                    
                    if let forwardMessageIds = self.chatPresentationInterfaceState.interfaceState.forwardMessageIds {
                        for id in forwardMessageIds {
                            messages.append(.forward(source: id, grouping: .auto, attributes: []))
                        }
                    }
                    
                    self.sendMessages(messages, silentPosting, scheduleTime, messages.count > 1)
                }
            }
        }
    }
    
    func animateIn(completion: (() -> Void)? = nil) {
        self.layer.animatePosition(from: CGPoint(x: self.layer.position.x, y: self.layer.position.y + self.layer.bounds.size.height), to: self.layer.position, duration: 0.5, timingFunction: kCAMediaTimingFunctionSpring, completion: { _ in
            completion?()
        })
    }
    
    func animateOut(completion: (() -> Void)? = nil) {
        self.layer.animatePosition(from: self.layer.position, to: CGPoint(x: self.layer.position.x, y: self.layer.position.y + self.layer.bounds.size.height), duration: 0.2, timingFunction: CAMediaTimingFunctionName.easeInEaseOut.rawValue, removeOnCompletion: false, completion: { _ in
            completion?()
        })
    }
    
    func setEnablePredictiveTextInput(_ value: Bool) {
        self.textInputPanelNode?.enablePredictiveInput = value
    }
    
    func updatePlainInputSeparatorAlpha(_ value: CGFloat, transition: ContainedViewLayoutTransition) {
        if self.plainInputSeparatorAlpha != value {
            let immediate = self.plainInputSeparatorAlpha == nil
            self.plainInputSeparatorAlpha = value
            self.updatePlainInputSeparator(transition: immediate ? .immediate : transition)
        }
    }
    
    func updatePlainInputSeparator(transition: ContainedViewLayoutTransition) {
        let resolvedValue: CGFloat
        if self.accessoryPanelNode != nil {
            resolvedValue = 1.0
        } else if self.usePlainInputSeparator {
            resolvedValue = self.plainInputSeparatorAlpha ?? 0.0
        } else {
            resolvedValue = 1.0
        }
        
        if resolvedValue != self.inputPanelBackgroundSeparatorNode.alpha {
            transition.updateAlpha(node: self.inputPanelBackgroundSeparatorNode, alpha: resolvedValue, beginWithCurrentState: true)
        }
    }
    
    func animateQuizCorrectOptionSelected() {
        self.view.insertSubview(ConfettiView(frame: self.view.bounds), aboveSubview: self.historyNode.view)
    }
    
    func updateEmbeddedTitlePeekContent(content: NavigationControllerDropContent?) {
        if !self.context.sharedContext.immediateExperimentalUISettings.playerEmbedding {
            return
        }
        
        guard let (_, navigationHeight) = self.validLayout else {
            return
        }
        var peekContent: ChatEmbeddedTitlePeekContent = .none
        if let content = content, let item = content.item as? VideoNavigationControllerDropContentItem, let _ = item.itemNode as? OverlayUniversalVideoNode {
            if content.position.y < navigationHeight + 32.0 {
                peekContent = .peek
            }
        }
        if self.embeddedTitlePeekContent != peekContent {
            self.embeddedTitlePeekContent = peekContent
            self.requestLayout(.animated(duration: 0.3, curve: .spring))
        }
    }
    
    var isEmbeddedTitleContentHidden: Bool {
        if let embeddedTitleContentNode = self.embeddedTitleContentNode {
            return embeddedTitleContentNode.isUIHidden
        } else {
            return false
        }
    }
    
    var updateHasEmbeddedTitleContent: (() -> Void)?
    
    func acceptEmbeddedTitlePeekContent(content: NavigationControllerDropContent) -> Bool {
        if !self.context.sharedContext.immediateExperimentalUISettings.playerEmbedding {
            return false
        }
        
        guard let (_, navigationHeight) = self.validLayout else {
            return false
        }
        if content.position.y >= navigationHeight + 32.0 {
            return false
        }
        if let item = content.item as? VideoNavigationControllerDropContentItem, let itemNode = item.itemNode as? OverlayUniversalVideoNode {
            let embeddedTitleContentNode = ChatEmbeddedTitleContentNode(context: self.context, videoNode: itemNode, disableInternalAnimationIn: false, interactiveExtensionUpdated: { [weak self] transition in
                guard let strongSelf = self else {
                    return
                }
                strongSelf.requestLayout(transition)
            }, dismissed: { [weak self] in
                guard let strongSelf = self else {
                    return
                }
                if let embeddedTitleContentNode = strongSelf.embeddedTitleContentNode {
                    strongSelf.embeddedTitleContentNode = nil
                    strongSelf.dismissedEmbeddedTitleContentNode = embeddedTitleContentNode
                    strongSelf.requestLayout(.animated(duration: 0.25, curve: .spring))
                    strongSelf.updateHasEmbeddedTitleContent?()
                }
            }, isUIHiddenUpdated: { [weak self] in
                self?.updateHasEmbeddedTitleContent?()
            }, unembedWhenPortrait: { [weak self] itemNode in
                guard let strongSelf = self, let itemNode = itemNode as? OverlayUniversalVideoNode else {
                    return false
                }
                strongSelf.unembedWhenPortrait(contentNode: itemNode)
                return true
            })
            self.embeddedTitleContentNode = embeddedTitleContentNode
            self.embeddedTitlePeekContent = .none
            self.updateHasEmbeddedTitleContent?()
            DispatchQueue.main.async {
                self.requestLayout(.animated(duration: 0.25, curve: .spring))
            }
            
            return true
        }
        return false
    }
    
    private func unembedWhenPortrait(contentNode: OverlayUniversalVideoNode) {
        let embeddedTitleContentNode = ChatEmbeddedTitleContentNode(context: self.context, videoNode: contentNode, disableInternalAnimationIn: true, interactiveExtensionUpdated: { [weak self] transition in
            guard let strongSelf = self else {
                return
            }
            strongSelf.requestLayout(transition)
        }, dismissed: { [weak self] in
            guard let strongSelf = self else {
                return
            }
            if let embeddedTitleContentNode = strongSelf.embeddedTitleContentNode {
                strongSelf.embeddedTitleContentNode = nil
                strongSelf.dismissedEmbeddedTitleContentNode = embeddedTitleContentNode
                strongSelf.requestLayout(.animated(duration: 0.25, curve: .spring))
                strongSelf.updateHasEmbeddedTitleContent?()
            }
        }, isUIHiddenUpdated: { [weak self] in
            self?.updateHasEmbeddedTitleContent?()
        }, unembedWhenPortrait: { [weak self] itemNode in
            guard let strongSelf = self, let itemNode = itemNode as? OverlayUniversalVideoNode else {
                return false
            }
            strongSelf.unembedWhenPortrait(contentNode: itemNode)
            return true
        })
        
        self.embeddedTitleContentNode = embeddedTitleContentNode
        self.embeddedTitlePeekContent = .none
        self.updateHasEmbeddedTitleContent?()
        self.requestLayout(.immediate)
    }
    
    func willNavigateAway() {
        if let embeddedTitleContentNode = self.embeddedTitleContentNode, embeddedTitleContentNode.unembedOnLeave {
            self.embeddedTitleContentNode = nil
            self.dismissedEmbeddedTitleContentNode = embeddedTitleContentNode
            embeddedTitleContentNode.expandIntoPiP()
            self.requestLayout(.animated(duration: 0.25, curve: .spring))
            self.updateHasEmbeddedTitleContent?()
        }
    }
    
    func updateIsBlurred(_ isBlurred: Bool) {
        if isBlurred {
            if self.blurredHistoryNode == nil {
                let unscaledSize = self.historyNode.frame.size
                let image = generateImage(CGSize(width: floor(unscaledSize.width), height: floor(unscaledSize.height)), opaque: true, scale: 1.0, rotatedContext: { size, context in
                    context.clear(CGRect(origin: CGPoint(), size: size))
                    
                    UIGraphicsPushContext(context)
                    
                    let backgroundFrame = self.backgroundNode.view.convert(self.backgroundNode.bounds, to: self.historyNode.supernode?.view)
                    self.backgroundNode.view.drawHierarchy(in: backgroundFrame, afterScreenUpdates: false)
                    
                    context.translateBy(x: size.width / 2.0, y: size.height / 2.0)
                    context.scaleBy(x: -1.0, y: -1.0)
                    context.translateBy(x: -size.width / 2.0, y: -size.height / 2.0)
                    
                    self.historyNode.view.drawHierarchy(in: CGRect(origin: CGPoint(), size: unscaledSize), afterScreenUpdates: false)
                    
                    UIGraphicsPopContext()
                }).flatMap(applyScreenshotEffectToImage)
                let blurredHistoryNode = ASImageNode()
                blurredHistoryNode.image = image
                blurredHistoryNode.frame = self.historyNode.frame
                self.blurredHistoryNode = blurredHistoryNode
                self.historyNode.supernode?.insertSubnode(blurredHistoryNode, aboveSubnode: self.historyNode)
            }
        } else {
            if let blurredHistoryNode = self.blurredHistoryNode {
                self.blurredHistoryNode = nil
                blurredHistoryNode.removeFromSupernode()
            }
        }
        self.historyNode.isHidden = isBlurred
    }
}