Merge commit '7621e2f8dec938cf48181c8b10afc9b01f444e68' into beta

submodules/Components/ActivityIndicatorComponent/BUILD

@@ -0,0 +1,18 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "ActivityIndicatorComponent",
+    module_name = "ActivityIndicatorComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/ComponentFlow:ComponentFlow",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/ActivityIndicatorComponent/Sources/ActivityIndicatorComponent.swift

@@ -0,0 +1,50 @@
+import Foundation
+import UIKit
+import ComponentFlow
+
+public final class ActivityIndicatorComponent: Component {
+    public let color: UIColor
+    
+    public init(
+        color: UIColor
+    ) {
+        self.color = color
+    }
+
+    public static func ==(lhs: ActivityIndicatorComponent, rhs: ActivityIndicatorComponent) -> Bool {
+        if lhs.color != rhs.color {
+            return false
+        }
+        return true
+    }
+    
+    public final class View: UIActivityIndicatorView {
+        public init() {
+            super.init(style: UIActivityIndicatorView.Style.large)
+        }
+        
+        required public init(coder: NSCoder) {
+            fatalError("init(coder:) has not been implemented")
+        }
+        
+        func update(component: ActivityIndicatorComponent, availableSize: CGSize, transition: ComponentTransition) -> CGSize {
+            if component.color != self.color {
+                self.color = component.color
+            }
+            
+            if !self.isAnimating {
+                self.startAnimating()
+            }
+            
+            return CGSize(width: 22.0, height: 22.0)
+        }
+    }
+    
+    public func makeView() -> View {
+        return View()
+    }
+    
+    public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+        return view.update(component: self, availableSize: availableSize, transition: transition)
+    }
+}

submodules/Components/AnimatedStickerComponent/BUILD

@@ -0,0 +1,22 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "AnimatedStickerComponent",
+    module_name = "AnimatedStickerComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/ComponentFlow:ComponentFlow",
+        "//submodules/AnimatedStickerNode:AnimatedStickerNode",
+        "//submodules/TelegramAnimatedStickerNode:TelegramAnimatedStickerNode",
+        "//submodules/Components/HierarchyTrackingLayer:HierarchyTrackingLayer",
+        "//submodules/TelegramCore:TelegramCore",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/AnimatedStickerComponent/Sources/AnimatedStickerComponent.swift

@@ -0,0 +1,151 @@
+import Foundation
+import UIKit
+import ComponentFlow
+import AnimatedStickerNode
+import TelegramAnimatedStickerNode
+import HierarchyTrackingLayer
+import TelegramCore
+
+public final class AnimatedStickerComponent: Component {
+    public struct Animation: Equatable {
+        public enum Source: Equatable {
+            case bundle(name: String)
+            case file(media: TelegramMediaFile)
+        }
+        
+        public var source: Source
+        public var scale: CGFloat
+        public var loop: Bool
+        
+        public init(source: Source, scale: CGFloat = 2.0, loop: Bool) {
+            self.source = source
+            self.scale = scale
+            self.loop = loop
+        }
+    }
+    
+    public let account: Account
+    public let animation: Animation
+    public var tintColor: UIColor?
+    public let isAnimating: Bool
+    public let size: CGSize
+    
+    public init(account: Account, animation: Animation, tintColor: UIColor? = nil, isAnimating: Bool = true, size: CGSize) {
+        self.account = account
+        self.animation = animation
+        self.tintColor = tintColor
+        self.isAnimating = isAnimating
+        self.size = size
+    }
+
+    public static func ==(lhs: AnimatedStickerComponent, rhs: AnimatedStickerComponent) -> Bool {
+        if lhs.account !== rhs.account {
+            return false
+        }
+        if lhs.animation != rhs.animation {
+            return false
+        }
+        if lhs.tintColor != rhs.tintColor {
+            return false
+        }
+        if lhs.isAnimating != rhs.isAnimating {
+            return false
+        }
+        if lhs.size != rhs.size {
+            return false
+        }
+        return true
+    }
+    
+    public final class View: UIView {
+        private var component: AnimatedStickerComponent?
+        private var animationNode: AnimatedStickerNode?
+        
+        private let hierarchyTrackingLayer: HierarchyTrackingLayer
+        private var isInHierarchy: Bool = false
+        
+        override init(frame: CGRect) {
+            self.hierarchyTrackingLayer = HierarchyTrackingLayer()
+            
+            super.init(frame: frame)
+            
+            self.layer.addSublayer(self.hierarchyTrackingLayer)
+            self.hierarchyTrackingLayer.didEnterHierarchy = { [weak self] in
+                guard let strongSelf = self else {
+                    return
+                }
+                strongSelf.isInHierarchy = true
+                strongSelf.animationNode?.visibility = true
+            }
+            
+            self.hierarchyTrackingLayer.didExitHierarchy = { [weak self] in
+                guard let strongSelf = self else {
+                    return
+                }
+                strongSelf.isInHierarchy = false
+                strongSelf.animationNode?.visibility = false
+            }
+        }
+        
+        required init?(coder: NSCoder) {
+            fatalError("init(coder:) has not been implemented")
+        }
+        
+        func update(component: AnimatedStickerComponent, availableSize: CGSize, transition: ComponentTransition) -> CGSize {
+            if self.component?.animation != component.animation {
+                self.animationNode?.view.removeFromSuperview()
+                
+                let animationNode = DefaultAnimatedStickerNodeImpl()
+                let source: AnimatedStickerNodeSource
+                switch component.animation.source {
+                    case let .bundle(name):
+                        source = AnimatedStickerNodeLocalFileSource(name: name)
+                    case let .file(media):
+                        source = AnimatedStickerResourceSource(account: component.account, resource: media.resource, fitzModifier: nil, isVideo: false)
+                }
+                
+                var playbackMode: AnimatedStickerPlaybackMode = .still(.start)
+                if component.animation.loop {
+                    playbackMode = .loop
+                } else if component.isAnimating {
+                    playbackMode = .once
+                } else {
+                    animationNode.autoplay = true
+                }
+                animationNode.setup(source: source, width: Int(component.size.width * component.animation.scale), height: Int(component.size.height * component.animation.scale), playbackMode: playbackMode, mode: .direct(cachePathPrefix: nil))
+                animationNode.visibility = self.isInHierarchy
+                
+                self.animationNode = animationNode
+                self.addSubnode(animationNode)
+            }
+            
+            self.animationNode?.setOverlayColor(component.tintColor, replace: true, animated: false)
+            
+            if !component.animation.loop && component.isAnimating != self.component?.isAnimating {
+                if component.isAnimating {
+                    let _ = self.animationNode?.playIfNeeded()
+                }
+            }
+            
+            self.component = component
+                
+            let animationSize = component.size
+            let size = CGSize(width: min(animationSize.width, availableSize.width), height: min(animationSize.height, availableSize.height))
+            
+            if let animationNode = self.animationNode {
+                animationNode.frame = CGRect(origin: CGPoint(x: floor((size.width - animationSize.width) / 2.0), y: floor((size.height - animationSize.height) / 2.0)), size: animationSize)
+                animationNode.updateLayout(size: animationSize)
+            }
+            
+            return size
+        }
+    }
+    
+    public func makeView() -> View {
+        return View(frame: CGRect())
+    }
+    
+    public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+        return view.update(component: self, availableSize: availableSize, transition: transition)
+    }
+}

submodules/Components/BalancedTextComponent/BUILD

@@ -0,0 +1,20 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "BalancedTextComponent",
+    module_name = "BalancedTextComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/Display:Display",
+        "//submodules/ComponentFlow:ComponentFlow",
+        "//submodules/Markdown:Markdown",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/BalancedTextComponent/Sources/BalancedTextComponent.swift

@@ -0,0 +1,226 @@
+import Foundation
+import UIKit
+import ComponentFlow
+import Display
+import Markdown
+
+public final class BalancedTextComponent: Component {
+    public enum TextContent: Equatable {
+        case plain(NSAttributedString)
+        case markdown(text: String, attributes: MarkdownAttributes)
+    }
+    
+    public let text: TextContent
+    public let balanced: Bool
+    public let horizontalAlignment: NSTextAlignment
+    public let verticalAlignment: TextVerticalAlignment
+    public let truncationType: CTLineTruncationType
+    public let maximumNumberOfLines: Int
+    public let lineSpacing: CGFloat
+    public let cutout: TextNodeCutout?
+    public let insets: UIEdgeInsets
+    public let tintColor: UIColor?
+    public let textShadowColor: UIColor?
+    public let textShadowBlur: CGFloat?
+    public let textStroke: (UIColor, CGFloat)?
+    public let highlightColor: UIColor?
+    public let highlightInset: UIEdgeInsets
+    public let highlightAction: (([NSAttributedString.Key: Any]) -> NSAttributedString.Key?)?
+    public let tapAction: (([NSAttributedString.Key: Any], Int) -> Void)?
+    public let longTapAction: (([NSAttributedString.Key: Any], Int) -> Void)?
+    
+    public init(
+        text: TextContent,
+        balanced: Bool = true,
+        horizontalAlignment: NSTextAlignment = .natural,
+        verticalAlignment: TextVerticalAlignment = .top,
+        truncationType: CTLineTruncationType = .end,
+        maximumNumberOfLines: Int = 1,
+        lineSpacing: CGFloat = 0.0,
+        cutout: TextNodeCutout? = nil,
+        insets: UIEdgeInsets = UIEdgeInsets(),
+        tintColor: UIColor? = nil,
+        textShadowColor: UIColor? = nil,
+        textShadowBlur: CGFloat? = nil,
+        textStroke: (UIColor, CGFloat)? = nil,
+        highlightColor: UIColor? = nil,
+        highlightInset: UIEdgeInsets = .zero,
+        highlightAction: (([NSAttributedString.Key: Any]) -> NSAttributedString.Key?)? = nil,
+        tapAction: (([NSAttributedString.Key: Any], Int) -> Void)? = nil,
+        longTapAction: (([NSAttributedString.Key: Any], Int) -> Void)? = nil
+    ) {
+        self.text = text
+        self.balanced = balanced
+        self.horizontalAlignment = horizontalAlignment
+        self.verticalAlignment = verticalAlignment
+        self.truncationType = truncationType
+        self.maximumNumberOfLines = maximumNumberOfLines
+        self.lineSpacing = lineSpacing
+        self.cutout = cutout
+        self.insets = insets
+        self.tintColor = tintColor
+        self.textShadowColor = textShadowColor
+        self.textShadowBlur = textShadowBlur
+        self.textStroke = textStroke
+        self.highlightColor = highlightColor
+        self.highlightInset = highlightInset
+        self.highlightAction = highlightAction
+        self.tapAction = tapAction
+        self.longTapAction = longTapAction
+    }
+    
+    public static func ==(lhs: BalancedTextComponent, rhs: BalancedTextComponent) -> Bool {
+        if lhs.text != rhs.text {
+            return false
+        }
+        if lhs.balanced != rhs.balanced {
+            return false
+        }
+        if lhs.horizontalAlignment != rhs.horizontalAlignment {
+            return false
+        }
+        if lhs.verticalAlignment != rhs.verticalAlignment {
+            return false
+        }
+        if lhs.truncationType != rhs.truncationType {
+            return false
+        }
+        if lhs.maximumNumberOfLines != rhs.maximumNumberOfLines {
+            return false
+        }
+        if lhs.lineSpacing != rhs.lineSpacing {
+            return false
+        }
+        if lhs.cutout != rhs.cutout {
+            return false
+        }
+        if lhs.insets != rhs.insets {
+            return false
+        }
+        if lhs.tintColor != rhs.tintColor {
+            return false
+        }
+        if let lhsTextShadowColor = lhs.textShadowColor, let rhsTextShadowColor = rhs.textShadowColor {
+            if !lhsTextShadowColor.isEqual(rhsTextShadowColor) {
+                return false
+            }
+        } else if (lhs.textShadowColor != nil) != (rhs.textShadowColor != nil) {
+            return false
+        }
+        if lhs.textShadowBlur != rhs.textShadowBlur {
+            return false
+        }
+        
+        if let lhsTextStroke = lhs.textStroke, let rhsTextStroke = rhs.textStroke {
+            if !lhsTextStroke.0.isEqual(rhsTextStroke.0) {
+                return false
+            }
+            if lhsTextStroke.1 != rhsTextStroke.1 {
+                return false
+            }
+        } else if (lhs.textShadowColor != nil) != (rhs.textShadowColor != nil) {
+            return false
+        }
+        
+        if let lhsHighlightColor = lhs.highlightColor, let rhsHighlightColor = rhs.highlightColor {
+            if !lhsHighlightColor.isEqual(rhsHighlightColor) {
+                return false
+            }
+        } else if (lhs.highlightColor != nil) != (rhs.highlightColor != nil) {
+            return false
+        }
+        
+        if lhs.highlightInset != rhs.highlightInset {
+            return false
+        }
+        
+        return true
+    }
+    
+    public final class View: UIView {
+        private let textView: ImmediateTextView
+        
+        override public init(frame: CGRect) {
+            self.textView = ImmediateTextView()
+            
+            super.init(frame: frame)
+            
+            self.addSubview(self.textView)
+        }
+        
+        required public init?(coder: NSCoder) {
+            fatalError("init(coder:) has not been implemented")
+        }
+        
+        public func attributeSubstring(name: String, index: Int) -> (String, String)? {
+            return self.textView.attributeSubstring(name: name, index: index)
+        }
+        
+        public func update(component: BalancedTextComponent, availableSize: CGSize, transition: ComponentTransition) -> CGSize {
+            let attributedString: NSAttributedString
+            switch component.text {
+            case let .plain(string):
+                attributedString = string
+            case let .markdown(text, attributes):
+                attributedString = parseMarkdownIntoAttributedString(text, attributes: attributes)
+            }
+            
+            self.textView.attributedText = attributedString
+            self.textView.maximumNumberOfLines = component.maximumNumberOfLines
+            self.textView.truncationType = component.truncationType
+            self.textView.textAlignment = component.horizontalAlignment
+            self.textView.verticalAlignment = component.verticalAlignment
+            self.textView.lineSpacing = component.lineSpacing
+            self.textView.cutout = component.cutout
+            self.textView.insets = component.insets
+            self.textView.textShadowColor = component.textShadowColor
+            self.textView.textShadowBlur = component.textShadowBlur
+            self.textView.textStroke = component.textStroke
+            self.textView.linkHighlightColor = component.highlightColor
+            self.textView.linkHighlightInset = component.highlightInset
+            self.textView.highlightAttributeAction = component.highlightAction
+            self.textView.tapAttributeAction = component.tapAction
+            self.textView.longTapAttributeAction = component.longTapAction
+            
+            var bestSize: (availableWidth: CGFloat, info: TextNodeLayout)
+            
+            let info = self.textView.updateLayoutFullInfo(availableSize)
+            bestSize = (availableSize.width, info)
+            
+            if component.balanced && info.numberOfLines > 1 {
+                let measureIncrement = 8.0
+                var measureWidth = info.size.width
+                measureWidth -= measureIncrement
+                while measureWidth > 0.0 {
+                    let otherInfo = self.textView.updateLayoutFullInfo(CGSize(width: measureWidth, height: availableSize.height))
+                    if otherInfo.numberOfLines > bestSize.info.numberOfLines {
+                        break
+                    }
+                    if (otherInfo.size.width - otherInfo.trailingLineWidth) < (bestSize.info.size.width - bestSize.info.trailingLineWidth) {
+                        bestSize = (measureWidth, otherInfo)
+                    }
+                    
+                    measureWidth -= measureIncrement
+                }
+                
+                let bestInfo = self.textView.updateLayoutFullInfo(CGSize(width: bestSize.availableWidth, height: availableSize.height))
+                bestSize = (availableSize.width, bestInfo)
+            }
+            
+            if let tintColor = component.tintColor {
+                transition.setTintColor(layer: self.textView.layer, color: tintColor)
+            }
+            
+            self.textView.frame = CGRect(origin: CGPoint(), size: bestSize.info.size)
+            return bestSize.info.size
+        }
+    }
+    
+    public func makeView() -> View {
+        return View()
+    }
+    
+    public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+        return view.update(component: self, availableSize: availableSize, transition: transition)
+    }
+}

submodules/Components/BlurredBackgroundComponent/BUILD

@@ -0,0 +1,20 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "BlurredBackgroundComponent",
+    module_name = "BlurredBackgroundComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/Display:Display",
+        "//submodules/ComponentFlow:ComponentFlow",
+        "//submodules/Components/ComponentDisplayAdapters:ComponentDisplayAdapters",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/BlurredBackgroundComponent/Sources/BlurredBackgroundComponent.swift

@@ -0,0 +1,62 @@
+import Foundation
+import UIKit
+import ComponentFlow
+import Display
+import ComponentDisplayAdapters
+
+public final class BlurredBackgroundComponent: Component {
+    public let color: UIColor
+    public let tintContainerView: UIView?
+    public let cornerRadius: CGFloat
+
+    public init(
+        color: UIColor,
+        tintContainerView: UIView? = nil,
+        cornerRadius: CGFloat = 0.0
+    ) {
+        self.color = color
+        self.tintContainerView = tintContainerView
+        self.cornerRadius = cornerRadius
+    }
+    
+    public static func ==(lhs: BlurredBackgroundComponent, rhs: BlurredBackgroundComponent) -> Bool {
+        if lhs.color != rhs.color {
+            return false
+        }
+        if lhs.tintContainerView !== rhs.tintContainerView {
+            return false
+        }
+        if lhs.cornerRadius != rhs.cornerRadius {
+            return false
+        }
+        return true
+    }
+    
+    public final class View: BlurredBackgroundView {
+        private var tintContainerView: UIView?
+        private var vibrancyEffectView: UIVisualEffectView?
+        
+        public func update(component: BlurredBackgroundComponent, availableSize: CGSize, transition: ComponentTransition) -> CGSize {
+            self.updateColor(color: component.color, forceKeepBlur: true, transition: transition.containedViewLayoutTransition)
+            
+            self.update(size: availableSize, cornerRadius: component.cornerRadius, transition: transition.containedViewLayoutTransition)
+            
+            if let tintContainerView = self.tintContainerView {
+                transition.setFrame(view: tintContainerView, frame: CGRect(origin: CGPoint(), size: availableSize))
+            }
+            if let vibrancyEffectView = self.vibrancyEffectView {
+                transition.setFrame(view: vibrancyEffectView, frame: CGRect(origin: CGPoint(), size: availableSize))
+            }
+
+            return availableSize
+        }
+    }
+    
+    public func makeView() -> View {
+        return View(color: nil, enableBlur: true)
+    }
+    
+    public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+        return view.update(component: self, availableSize: availableSize, transition: transition)
+    }
+}

submodules/Components/BundleIconComponent/BUILD

@@ -0,0 +1,20 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "BundleIconComponent",
+    module_name = "BundleIconComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/ComponentFlow:ComponentFlow",
+        "//submodules/AppBundle:AppBundle",
+        "//submodules/Display:Display",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/BundleIconComponent/Sources/BundleIconComponent.swift

@@ -0,0 +1,108 @@
+import Foundation
+import UIKit
+import ComponentFlow
+import AppBundle
+import Display
+
+public final class BundleIconComponent: Component {
+    public let name: String
+    public let tintColor: UIColor?
+    public let maxSize: CGSize?
+    public let scaleFactor: CGFloat
+    public let shadowColor: UIColor?
+    public let shadowBlur: CGFloat
+    public let flipVertically: Bool
+    
+    public init(name: String, tintColor: UIColor?, maxSize: CGSize? = nil, scaleFactor: CGFloat = 1.0, shadowColor: UIColor? = nil, shadowBlur: CGFloat = 0.0, flipVertically: Bool = false) {
+        self.name = name
+        self.tintColor = tintColor
+        self.maxSize = maxSize
+        self.scaleFactor = scaleFactor
+        self.shadowColor = shadowColor
+        self.shadowBlur = shadowBlur
+        self.flipVertically = flipVertically
+    }
+    
+    public static func ==(lhs: BundleIconComponent, rhs: BundleIconComponent) -> Bool {
+        if lhs.name != rhs.name {
+            return false
+        }
+        if lhs.tintColor != rhs.tintColor {
+            return false
+        }
+        if lhs.maxSize != rhs.maxSize {
+            return false
+        }
+        if lhs.scaleFactor != rhs.scaleFactor {
+            return false
+        }
+        if lhs.shadowColor != rhs.shadowColor {
+            return false
+        }
+        if lhs.shadowBlur != rhs.shadowBlur {
+            return false
+        }
+        if lhs.flipVertically != rhs.flipVertically {
+            return false
+        }
+        return true
+    }
+    
+    public final class View: UIImageView {
+        private var component: BundleIconComponent?
+        
+        override init(frame: CGRect) {
+            super.init(frame: frame)
+        }
+        
+        required public init?(coder: NSCoder) {
+            fatalError("init(coder:) has not been implemented")
+        }
+        
+        func update(component: BundleIconComponent, availableSize: CGSize, transition: ComponentTransition) -> CGSize {
+            if self.component?.name != component.name || self.component?.tintColor != component.tintColor || self.component?.shadowColor != component.shadowColor || self.component?.shadowBlur != component.shadowBlur || self.component?.flipVertically != component.flipVertically {
+                var image: UIImage?
+                if let tintColor = component.tintColor {
+                    image = generateTintedImage(image: UIImage(bundleImageName: component.name), color: tintColor, backgroundColor: nil)
+                } else {
+                    image = UIImage(bundleImageName: component.name)
+                }
+                if let imageValue = image, let shadowColor = component.shadowColor, component.shadowBlur != 0.0 {
+                    image = generateImage(CGSize(width: imageValue.size.width + component.shadowBlur * 2.0, height: imageValue.size.height + component.shadowBlur * 2.0), contextGenerator: { size, context in
+                        context.clear(CGRect(origin: CGPoint(), size: size))
+                        context.setShadow(offset: CGSize(), blur: component.shadowBlur, color: shadowColor.cgColor)
+                        
+                        if let cgImage = imageValue.cgImage {
+                            context.draw(cgImage, in: CGRect(origin: CGPoint(x: component.shadowBlur, y: component.shadowBlur), size: imageValue.size))
+                        }
+                    })
+                }
+                if component.flipVertically, let cgImage = image?.cgImage {
+                    self.image = UIImage(cgImage: cgImage, scale: image?.scale ?? 0.0, orientation: .down)
+                } else {
+                    self.image = image
+                }
+            }
+            self.component = component
+            
+            var imageSize = self.image?.size ?? CGSize()
+            if let maxSize = component.maxSize {
+                imageSize = imageSize.aspectFitted(maxSize)
+            }
+            if component.scaleFactor != 1.0 {
+                imageSize.width = floor(imageSize.width * component.scaleFactor)
+                imageSize.height = floor(imageSize.height * component.scaleFactor)
+            }
+            
+            return CGSize(width: min(imageSize.width, availableSize.width), height: min(imageSize.height, availableSize.height))
+        }
+    }
+    
+    public func makeView() -> View {
+        return View(frame: CGRect())
+    }
+    
+    public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+        return view.update(component: self, availableSize: availableSize, transition: transition)
+    }
+}

submodules/Components/ComponentDisplayAdapters/BUILD

@@ -0,0 +1,19 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "ComponentDisplayAdapters",
+    module_name = "ComponentDisplayAdapters",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/Display:Display",
+        "//submodules/ComponentFlow:ComponentFlow",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/ComponentDisplayAdapters/Sources/ComponentDisplayAdapters.swift

@@ -0,0 +1,54 @@
+import Foundation
+import UIKit
+import ComponentFlow
+import Display
+
+public extension ComponentTransition.Animation.Curve {
+    init(_ curve: ContainedViewLayoutTransitionCurve) {
+        switch curve {
+        case .linear:
+            self = .linear
+        case .easeInOut:
+            self = .easeInOut
+        case let .custom(a, b, c, d):
+            self = .custom(a, b, c, d)
+        case .customSpring:
+            self = .spring
+        case .spring:
+            self = .spring
+        }
+    }
+    
+    var containedViewLayoutTransitionCurve: ContainedViewLayoutTransitionCurve {
+        switch self {
+        case .linear:
+            return .linear
+        case .easeInOut:
+            return .easeInOut
+        case .spring:
+            return .spring
+        case let .custom(a, b, c, d):
+            return .custom(a, b, c, d)
+        }
+    }
+}
+
+public extension ComponentTransition {
+    init(_ transition: ContainedViewLayoutTransition) {
+        switch transition {
+        case .immediate:
+            self.init(animation: .none)
+        case let .animated(duration, curve):
+            self.init(animation: .curve(duration: duration, curve: ComponentTransition.Animation.Curve(curve)))
+        }
+    }
+    
+    var containedViewLayoutTransition: ContainedViewLayoutTransition {
+        switch self.animation {
+            case .none:
+                return .immediate
+            case let .curve(duration, curve):
+                return .animated(duration: duration, curve: curve.containedViewLayoutTransitionCurve)
+        }
+    }
+}

submodules/Components/Forms/CreditCardInputComponent/BUILD

@@ -0,0 +1,20 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "CreditCardInputComponent",
+    module_name = "CreditCardInputComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/Display:Display",
+        "//submodules/ComponentFlow:ComponentFlow",
+        "//submodules/Stripe:Stripe",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/Forms/CreditCardInputComponent/Sources/CreditCardInputComponent.swift

@@ -0,0 +1,172 @@
+import Foundation
+import UIKit
+import ComponentFlow
+import Display
+import Stripe
+
+public final class CreditCardInputComponent: Component {
+    public enum DataType {
+        case cardNumber
+        case expirationDate
+    }
+    
+    public let dataType: DataType
+    public let text: String
+    public let textColor: UIColor
+    public let errorTextColor: UIColor
+    public let placeholder: String
+    public let placeholderColor: UIColor
+    public let updated: (String) -> Void
+    
+    public init(
+        dataType: DataType,
+        text: String,
+        textColor: UIColor,
+        errorTextColor: UIColor,
+        placeholder: String,
+        placeholderColor: UIColor,
+        updated: @escaping (String) -> Void
+    ) {
+        self.dataType = dataType
+        self.text = text
+        self.textColor = textColor
+        self.errorTextColor = errorTextColor
+        self.placeholder = placeholder
+        self.placeholderColor = placeholderColor
+        self.updated = updated
+    }
+    
+    public static func ==(lhs: CreditCardInputComponent, rhs: CreditCardInputComponent) -> Bool {
+        if lhs.dataType != rhs.dataType {
+            return false
+        }
+        if lhs.text != rhs.text {
+            return false
+        }
+        if lhs.textColor != rhs.textColor {
+            return false
+        }
+        if lhs.errorTextColor != rhs.errorTextColor {
+            return false
+        }
+        if lhs.placeholder != rhs.placeholder {
+            return false
+        }
+        if lhs.placeholderColor != rhs.placeholderColor {
+            return false
+        }
+        return true
+    }
+    
+    public final class View: UIView, STPFormTextFieldDelegate, UITextFieldDelegate {
+        private let textField: STPFormTextField
+        
+        private var component: CreditCardInputComponent?
+        private let viewModel: STPPaymentCardTextFieldViewModel
+        
+        override init(frame: CGRect) {
+            self.textField = STPFormTextField(frame: CGRect())
+            
+            self.viewModel = STPPaymentCardTextFieldViewModel()
+            
+            super.init(frame: frame)
+            
+            self.textField.backgroundColor = .clear
+            self.textField.keyboardType = .phonePad
+            
+            self.textField.formDelegate = self
+            self.textField.validText = true
+            
+            self.addSubview(self.textField)
+        }
+        
+        required init?(coder: NSCoder) {
+            fatalError("init(coder:) has not been implemented")
+        }
+        
+        @objc private func textFieldChanged(_ textField: UITextField) {
+            self.component?.updated(self.textField.text ?? "")
+        }
+        
+        public func formTextFieldDidBackspace(onEmpty formTextField: STPFormTextField) {
+        }
+        
+        public func formTextField(_ formTextField: STPFormTextField, modifyIncomingTextChange input: NSAttributedString) -> NSAttributedString {
+            guard let component = self.component else {
+                return input
+            }
+            
+            switch component.dataType {
+            case .cardNumber:
+                self.viewModel.cardNumber = input.string
+                return NSAttributedString(string: self.viewModel.cardNumber ?? "", attributes: self.textField.defaultTextAttributes)
+            case .expirationDate:
+                self.viewModel.rawExpiration = input.string
+                return NSAttributedString(string: self.viewModel.rawExpiration ?? "", attributes: self.textField.defaultTextAttributes)
+            }
+        }
+        
+        public func formTextFieldTextDidChange(_ textField: STPFormTextField) {
+            guard let component = self.component else {
+                return
+            }
+            
+            component.updated(self.textField.text ?? "")
+            
+            let state: STPCardValidationState
+            switch component.dataType {
+            case .cardNumber:
+                state = self.viewModel.validationState(for: .number)
+            case .expirationDate:
+                state = self.viewModel.validationState(for: .expiration)
+            }
+            self.textField.validText = true
+            switch state {
+            case .invalid:
+                self.textField.validText = false
+            case .incomplete:
+                break
+            case .valid:
+                break
+            @unknown default:
+                break
+            }
+        }
+        
+        func update(component: CreditCardInputComponent, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+            switch component.dataType {
+            case .cardNumber:
+                self.textField.autoFormattingBehavior = .cardNumbers
+            case .expirationDate:
+                self.textField.autoFormattingBehavior = .expiration
+            }
+            
+            self.textField.font = UIFont.systemFont(ofSize: 17.0)
+            self.textField.defaultColor = component.textColor
+            self.textField.errorColor = .red
+            self.textField.placeholderColor = component.placeholderColor
+            
+            if self.textField.text != component.text {
+                self.textField.text = component.text
+            }
+            
+            self.textField.attributedPlaceholder = NSAttributedString(string: component.placeholder, font: self.textField.font, textColor: component.placeholderColor)
+            
+            let size = CGSize(width: availableSize.width, height: 44.0)
+            
+            transition.setFrame(view: self.textField, frame: CGRect(origin: CGPoint(), size: size), completion: nil)
+            
+            self.component = component
+            
+            return size
+        }
+    }
+    
+    public func makeView() -> View {
+        return View(frame: CGRect())
+    }
+    
+    public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+        return view.update(component: self, availableSize: availableSize, state: state, environment: environment, transition: transition)
+    }
+}

submodules/Components/Forms/PrefixSectionGroupComponent/BUILD

@@ -0,0 +1,19 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "PrefixSectionGroupComponent",
+    module_name = "PrefixSectionGroupComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/Display:Display",
+        "//submodules/ComponentFlow:ComponentFlow",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/Forms/PrefixSectionGroupComponent/Sources/PrefixSectionGroupComponent.swift

@@ -0,0 +1,194 @@
+import Foundation
+import UIKit
+import ComponentFlow
+import Display
+
+public final class PrefixSectionGroupComponent: Component {
+    public final class Item: Equatable {
+        public let prefix: AnyComponentWithIdentity<Empty>
+        public let content: AnyComponentWithIdentity<Empty>
+        
+        public init(prefix: AnyComponentWithIdentity<Empty>, content: AnyComponentWithIdentity<Empty>) {
+            self.prefix = prefix
+            self.content = content
+        }
+        
+        public static func ==(lhs: Item, rhs: Item) -> Bool {
+            if lhs.prefix != rhs.prefix {
+                return false
+            }
+            if lhs.content != rhs.content {
+                return false
+            }
+            
+            return true
+        }
+    }
+    
+    public let items: [Item]
+    public let backgroundColor: UIColor
+    public let separatorColor: UIColor
+    
+    public init(
+        items: [Item],
+        backgroundColor: UIColor,
+        separatorColor: UIColor
+    ) {
+        self.items = items
+        self.backgroundColor = backgroundColor
+        self.separatorColor = separatorColor
+    }
+    
+    public static func ==(lhs: PrefixSectionGroupComponent, rhs: PrefixSectionGroupComponent) -> Bool {
+        if lhs.items != rhs.items {
+            return false
+        }
+        if lhs.backgroundColor != rhs.backgroundColor {
+            return false
+        }
+        if lhs.separatorColor != rhs.separatorColor {
+            return false
+        }
+        return true
+    }
+    
+    public final class View: UIView {
+        private let backgroundView: UIView
+        private var itemViews: [AnyHashable: ComponentHostView<Empty>] = [:]
+        private var separatorViews: [UIView] = []
+        
+        override init(frame: CGRect) {
+            self.backgroundView = UIView()
+            
+            super.init(frame: frame)
+            
+            self.addSubview(self.backgroundView)
+            self.backgroundView.layer.cornerRadius = 10.0
+            self.backgroundView.layer.masksToBounds = true
+        }
+        
+        required init?(coder: NSCoder) {
+            fatalError("init(coder:) has not been implemented")
+        }
+        
+        func update(component: PrefixSectionGroupComponent, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+            let spacing: CGFloat = 16.0
+            let sideInset: CGFloat = 16.0
+            
+            self.backgroundView.backgroundColor = component.backgroundColor
+            
+            var size = CGSize(width: availableSize.width, height: 0.0)
+            
+            var validIds: [AnyHashable] = []
+            
+            var maxPrefixSize = CGSize()
+            var prefixItemSizes: [CGSize] = []
+            for item in component.items {
+                validIds.append(item.prefix.id)
+                
+                let itemView: ComponentHostView<Empty>
+                var itemTransition = transition
+                if let current = self.itemViews[item.prefix.id] {
+                    itemView = current
+                } else {
+                    itemTransition = transition.withAnimation(.none)
+                    itemView = ComponentHostView<Empty>()
+                    self.itemViews[item.prefix.id] = itemView
+                    self.addSubview(itemView)
+                }
+                let itemSize = itemView.update(
+                    transition: itemTransition,
+                    component: item.prefix.component,
+                    environment: {},
+                    containerSize: CGSize(width: size.width, height: .greatestFiniteMagnitude)
+                )
+                prefixItemSizes.append(itemSize)
+                maxPrefixSize.width = max(maxPrefixSize.width, itemSize.width)
+                maxPrefixSize.height = max(maxPrefixSize.height, itemSize.height)
+            }
+            
+            var maxContentSize = CGSize()
+            var contentItemSizes: [CGSize] = []
+            for item in component.items {
+                validIds.append(item.content.id)
+                
+                let itemView: ComponentHostView<Empty>
+                var itemTransition = transition
+                if let current = self.itemViews[item.content.id] {
+                    itemView = current
+                } else {
+                    itemTransition = transition.withAnimation(.none)
+                    itemView = ComponentHostView<Empty>()
+                    self.itemViews[item.content.id] = itemView
+                    self.addSubview(itemView)
+                }
+                let itemSize = itemView.update(
+                    transition: itemTransition,
+                    component: item.content.component,
+                    environment: {},
+                    containerSize: CGSize(width: size.width - maxPrefixSize.width - sideInset - spacing, height: .greatestFiniteMagnitude)
+                )
+                contentItemSizes.append(itemSize)
+                maxContentSize.width = max(maxContentSize.width, itemSize.width)
+                maxContentSize.height = max(maxContentSize.height, itemSize.height)
+            }
+            
+            for i in 0 ..< component.items.count {
+                let itemSize = CGSize(width: size.width, height: max(prefixItemSizes[i].height, contentItemSizes[i].height))
+                let itemFrame = CGRect(origin: CGPoint(x: 0.0, y: size.height), size: itemSize)
+                
+                let prefixView = itemViews[component.items[i].prefix.id]!
+                let contentView = itemViews[component.items[i].content.id]!
+                
+                prefixView.frame = CGRect(origin: CGPoint(x: sideInset, y: itemFrame.minY + floor((itemFrame.height - prefixItemSizes[i].height) / 2.0)), size: prefixItemSizes[i])
+                
+                contentView.frame = CGRect(origin: CGPoint(x: itemFrame.minX + sideInset + maxPrefixSize.width + spacing, y: itemFrame.minY + floor((itemFrame.height - contentItemSizes[i].height) / 2.0)), size: contentItemSizes[i])
+                
+                size.height += itemSize.height
+                
+                if i != component.items.count - 1 {
+                    let separatorView: UIView
+                    if self.separatorViews.count > i {
+                        separatorView = self.separatorViews[i]
+                    } else {
+                        separatorView = UIView()
+                        self.separatorViews.append(separatorView)
+                        self.addSubview(separatorView)
+                    }
+                    separatorView.backgroundColor = component.separatorColor
+                    separatorView.frame = CGRect(origin: CGPoint(x: itemFrame.minX + sideInset, y: itemFrame.maxY), size: CGSize(width: itemFrame.width - sideInset, height: UIScreenPixel))
+                }
+            }
+            
+            var removeIds: [AnyHashable] = []
+            for (id, itemView) in self.itemViews {
+                if !validIds.contains(id) {
+                    removeIds.append(id)
+                    itemView.removeFromSuperview()
+                }
+            }
+            for id in removeIds {
+                self.itemViews.removeValue(forKey: id)
+            }
+            
+            if self.separatorViews.count > component.items.count - 1 {
+                for i in (component.items.count - 1) ..< self.separatorViews.count {
+                    self.separatorViews[i].removeFromSuperview()
+                }
+                self.separatorViews.removeSubrange((component.items.count - 1) ..< self.separatorViews.count)
+            }
+            
+            transition.setFrame(view: self.backgroundView, frame: CGRect(origin: CGPoint(), size: size), completion: nil)
+            
+            return size
+        }
+    }
+    
+    public func makeView() -> View {
+        return View(frame: CGRect())
+    }
+    
+    public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+        return view.update(component: self, availableSize: availableSize, state: state, environment: environment, transition: transition)
+    }
+}

submodules/Components/Forms/TextInputComponent/BUILD

@@ -0,0 +1,19 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "TextInputComponent",
+    module_name = "TextInputComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/Display:Display",
+        "//submodules/ComponentFlow:ComponentFlow",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/Forms/TextInputComponent/Sources/TextInputComponent.swift

@@ -0,0 +1,86 @@
+import Foundation
+import UIKit
+import ComponentFlow
+import Display
+
+public final class TextInputComponent: Component {
+    public let text: String
+    public let textColor: UIColor
+    public let placeholder: String
+    public let placeholderColor: UIColor
+    public let updated: (String) -> Void
+    
+    public init(
+        text: String,
+        textColor: UIColor,
+        placeholder: String,
+        placeholderColor: UIColor,
+        updated: @escaping (String) -> Void
+    ) {
+        self.text = text
+        self.textColor = textColor
+        self.placeholder = placeholder
+        self.placeholderColor = placeholderColor
+        self.updated = updated
+    }
+    
+    public static func ==(lhs: TextInputComponent, rhs: TextInputComponent) -> Bool {
+        if lhs.text != rhs.text {
+            return false
+        }
+        if lhs.textColor != rhs.textColor {
+            return false
+        }
+        if lhs.placeholder != rhs.placeholder {
+            return false
+        }
+        if lhs.placeholderColor != rhs.placeholderColor {
+            return false
+        }
+        return true
+    }
+    
+    public final class View: UITextField, UITextFieldDelegate {
+        private var component: TextInputComponent?
+        
+        override init(frame: CGRect) {
+            super.init(frame: frame)
+            
+            self.delegate = self
+            self.addTarget(self, action: #selector(self.textFieldChanged(_:)), for: .editingChanged)
+        }
+        
+        required init?(coder: NSCoder) {
+            fatalError("init(coder:) has not been implemented")
+        }
+        
+        @objc private func textFieldChanged(_ textField: UITextField) {
+            self.component?.updated(self.text ?? "")
+        }
+        
+        func update(component: TextInputComponent, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+            self.font = UIFont.systemFont(ofSize: 17.0)
+            self.textColor = component.textColor
+            
+            if self.text != component.text {
+                self.text = component.text
+            }
+            
+            self.attributedPlaceholder = NSAttributedString(string: component.placeholder, font: self.font, textColor: component.placeholderColor)
+            
+            let size = CGSize(width: availableSize.width, height: 44.0)
+            
+            self.component = component
+            
+            return size
+        }
+    }
+    
+    public func makeView() -> View {
+        return View(frame: CGRect())
+    }
+    
+    public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+        return view.update(component: self, availableSize: availableSize, state: state, environment: environment, transition: transition)
+    }
+}

submodules/Components/HierarchyTrackingLayer/BUILD

@@ -0,0 +1,17 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "HierarchyTrackingLayer",
+    module_name = "HierarchyTrackingLayer",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/HierarchyTrackingLayer/Sources/HierarchyTrackingLayer.swift

@@ -0,0 +1,33 @@
+import UIKit
+
+private final class NullActionClass: NSObject, CAAction {
+    @objc public func run(forKey event: String, object anObject: Any, arguments dict: [AnyHashable : Any]?) {
+    }
+}
+
+private let nullAction = NullActionClass()
+
+open class HierarchyTrackingLayer: CALayer {
+    public var didEnterHierarchy: (() -> Void)?
+    public var didExitHierarchy: (() -> Void)?
+    public var isInHierarchyUpdated: ((Bool) -> Void)?
+    
+    public private(set) var isInHierarchy: Bool = false {
+        didSet {
+            if self.isInHierarchy != oldValue {
+                self.isInHierarchyUpdated?(self.isInHierarchy)
+            }
+        }
+    }
+    
+    override open func action(forKey event: String) -> CAAction? {
+        if event == kCAOnOrderIn {
+            self.isInHierarchy = true
+            self.didEnterHierarchy?()
+        } else if event == kCAOnOrderOut {
+            self.isInHierarchy = false
+            self.didExitHierarchy?()
+        }
+        return nullAction
+    }
+}

submodules/Components/LottieAnimationComponent/BUILD

@@ -0,0 +1,23 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "LottieAnimationComponent",
+    module_name = "LottieAnimationComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/ComponentFlow:ComponentFlow",
+        "//submodules/lottie-ios:Lottie",
+        "//submodules/AppBundle:AppBundle",
+        "//submodules/Display:Display",
+        "//submodules/Components/HierarchyTrackingLayer:HierarchyTrackingLayer",
+        "//submodules/GZip:GZip",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/LottieAnimationComponent/Sources/LottieAnimationComponent.swift

@@ -0,0 +1,331 @@
+import Foundation
+import ComponentFlow
+import Lottie
+import AppBundle
+import HierarchyTrackingLayer
+import UIKit
+import Display
+import GZip
+
+public final class LottieAnimationComponent: Component {
+    public struct AnimationItem: Equatable {
+        public enum StillPosition {
+            case begin
+            case end
+        }
+        
+        public enum Mode: Equatable {
+            case still(position: StillPosition)
+            case animating(loop: Bool)
+            case animateTransitionFromPrevious
+        }
+        
+        public var name: String
+        public var mode: Mode
+        public var range: (CGFloat, CGFloat)?
+        public var speed: CGFloat
+        public var waitForCompletion: Bool
+        
+        public init(name: String, mode: Mode, range: (CGFloat, CGFloat)? = nil, speed: CGFloat = 1.0, waitForCompletion: Bool = true) {
+            self.name = name
+            self.mode = mode
+            self.range = range
+            self.speed = speed
+            self.waitForCompletion = waitForCompletion
+        }
+        
+        public static func == (lhs: LottieAnimationComponent.AnimationItem, rhs: LottieAnimationComponent.AnimationItem) -> Bool {
+            if lhs.name != rhs.name {
+                return false
+            }
+            if lhs.mode != rhs.mode {
+                return false
+            }
+            if lhs.speed != rhs.speed {
+                return false
+            }
+            if let lhsRange = lhs.range, let rhsRange = rhs.range, lhsRange != rhsRange {
+                return false
+            } else if (lhs.range == nil) != (rhs.range == nil) {
+                return false
+            }
+            return true
+        }
+    }
+    
+    public let animation: AnimationItem
+    public let colors: [String: UIColor]
+    public let tag: AnyObject?
+    public let size: CGSize?
+    
+    public init(animation: AnimationItem, colors: [String: UIColor], tag: AnyObject? = nil, size: CGSize?) {
+        self.animation = animation
+        self.colors = colors
+        self.tag = tag
+        self.size = size
+    }
+    
+    public func tagged(_ tag: AnyObject?) -> LottieAnimationComponent {
+        return LottieAnimationComponent(
+            animation: self.animation,
+            colors: self.colors,
+            tag: tag,
+            size: self.size
+        )
+    }
+
+    public static func ==(lhs: LottieAnimationComponent, rhs: LottieAnimationComponent) -> Bool {
+        if lhs.animation != rhs.animation {
+            return false
+        }
+        if lhs.colors != rhs.colors {
+            return false
+        }
+        if lhs.tag !== rhs.tag {
+            return false
+        }
+        if lhs.size != rhs.size {
+            return false
+        }
+        return true
+    }
+    
+    public final class View: UIView, ComponentTaggedView {
+        private var component: LottieAnimationComponent?
+        
+        //private var colorCallbacks: [LOTColorValueCallback] = []
+        private var animationView: AnimationView?
+        private var didPlayToCompletion: Bool = false
+        
+        private let hierarchyTrackingLayer: HierarchyTrackingLayer
+        
+        private var currentCompletion: (() -> Void)?
+        
+        override init(frame: CGRect) {
+            self.hierarchyTrackingLayer = HierarchyTrackingLayer()
+            
+            super.init(frame: frame)
+            
+            self.layer.addSublayer(self.hierarchyTrackingLayer)
+            self.hierarchyTrackingLayer.didEnterHierarchy = { [weak self] in
+                guard let strongSelf = self, let animationView = strongSelf.animationView else {
+                    return
+                }
+                if case .loop = animationView.loopMode {
+                    animationView.play { _ in
+                        self?.currentCompletion?()
+                    }
+                }
+            }
+        }
+        
+        required init?(coder: NSCoder) {
+            fatalError("init(coder:) has not been implemented")
+        }
+        
+        public func matches(tag: Any) -> Bool {
+            if let component = self.component, let componentTag = component.tag {
+                let tag = tag as AnyObject
+                if componentTag === tag {
+                    return true
+                }
+            }
+            return false
+        }
+        
+        public func playOnce() {
+            guard let animationView = self.animationView, let component = self.component else {
+                return
+            }
+
+            animationView.stop()
+            animationView.loopMode = .playOnce
+            
+            if let range = component.animation.range {
+                animationView.play(fromProgress: range.0, toProgress: range.1, completion: { [weak self] _ in
+                    self?.currentCompletion?()
+                })
+            } else {
+                animationView.play { [weak self] _ in
+                    self?.currentCompletion?()
+                }
+            }
+        }
+        
+        func update(component: LottieAnimationComponent, availableSize: CGSize, transition: ComponentTransition) -> CGSize {
+            var updatePlayback = false
+            var updateColors = false
+            
+            if let currentComponent = self.component, currentComponent.colors != component.colors {
+                updateColors = true
+            }
+            
+            var animateSize = true
+            var updateComponent = true
+            
+            if self.component?.animation != component.animation {
+                if let animationView = self.animationView {
+                    if case .animateTransitionFromPrevious = component.animation.mode, !animationView.isAnimationPlaying, !self.didPlayToCompletion {
+                        updateComponent = false
+                        animationView.play { [weak self] _ in
+                            self?.currentCompletion?()
+                        }
+                    }
+                }
+                
+                if let animationView = self.animationView, animationView.isAnimationPlaying && component.animation.waitForCompletion {
+                    updateComponent = false
+                    self.currentCompletion = { [weak self] in
+                        guard let strongSelf = self else {
+                            return
+                        }
+                        strongSelf.didPlayToCompletion = true
+                        let _ = strongSelf.update(component: component, availableSize: availableSize, transition: transition)
+                    }
+                    animationView.loopMode = .playOnce
+                } else {
+                    self.component = component
+                    
+                    self.animationView?.removeFromSuperview()
+                    self.didPlayToCompletion = false
+                    self.currentCompletion = nil
+                    
+                    var animation: Animation?
+                    if let url = getAppBundle().url(forResource: component.animation.name, withExtension: "json"), let maybeAnimation = Animation.filepath(url.path) {
+                        animation = maybeAnimation
+                    } else if let url = getAppBundle().url(forResource: component.animation.name, withExtension: "tgs"), let data = try? Data(contentsOf: URL(fileURLWithPath: url.path)), let unpackedData = TGGUnzipData(data, 5 * 1024 * 1024) {
+                        animation = try? Animation.from(data: unpackedData, strategy: .codable)
+                    }
+                    
+                    if let animation {
+                        let view = AnimationView(animation: animation, configuration: LottieConfiguration(renderingEngine: .mainThread, decodingStrategy: .codable))
+                        switch component.animation.mode {
+                        case .still, .animateTransitionFromPrevious:
+                            view.loopMode = .playOnce
+                        case let .animating(loop):
+                            if loop {
+                                view.loopMode = .loop
+                            } else {
+                                view.loopMode = .playOnce
+                            }
+                        }
+                        view.animationSpeed = component.animation.speed
+                        view.backgroundColor = .clear
+                        view.isOpaque = false
+                        
+                        updateColors = true
+                        
+                        self.animationView = view
+                        self.addSubview(view)
+                        
+                        animateSize = false
+                        updatePlayback = true
+                    }
+                }
+            }
+            
+            if updateComponent {
+                self.component = component
+            }
+            
+            if updateColors, let animationView = self.animationView {
+                if let value = component.colors["__allcolors__"] {
+                    for keypath in animationView.allKeypaths(predicate: { $0.keys.last == "Colors" }) {
+                        animationView.setValueProvider(GradientValueProvider([value.lottieColorValue, value.lottieColorValue]), keypath: AnimationKeypath(keypath: keypath))
+                    }
+                    for keypath in animationView.allKeypaths(predicate: { $0.keys.last == "Color" }) {
+                        animationView.setValueProvider(ColorValueProvider(value.lottieColorValue), keypath: AnimationKeypath(keypath: keypath))
+                    }
+                }
+                
+                for (key, value) in component.colors {
+                    if key == "__allcolors__" {
+                        continue
+                    }
+                    animationView.setValueProvider(ColorValueProvider(value.lottieColorValue), keypath: AnimationKeypath(keypath: "\(key).Color"))
+                }
+            }
+            
+            var animationSize = CGSize()
+            if let animationView = self.animationView, let animation = animationView.animation {
+                animationSize = animation.size
+            }
+            if let customSize = component.size {
+                animationSize = customSize
+            }
+            
+            let size = CGSize(width: min(animationSize.width, availableSize.width), height: min(animationSize.height, availableSize.height))
+            
+            if let animationView = self.animationView {
+                let animationFrame = CGRect(origin: CGPoint(x: floor((size.width - animationSize.width) / 2.0), y: floor((size.height - animationSize.height) / 2.0)), size: animationSize)
+                
+                if animationView.frame != animationFrame {
+                    if !transition.animation.isImmediate && animateSize && !animationView.frame.isEmpty && animationView.frame.size != animationFrame.size {
+                        let previouosAnimationFrame = animationView.frame
+                        
+                        if let snapshotView = animationView.snapshotView(afterScreenUpdates: false) {
+                            snapshotView.frame = previouosAnimationFrame
+                            
+                            animationView.superview?.insertSubview(snapshotView, belowSubview: animationView)
+                            
+                            transition.setPosition(view: snapshotView, position: CGPoint(x: animationFrame.midX, y: animationFrame.midY))
+                            snapshotView.bounds = CGRect(origin: CGPoint(), size: animationFrame.size)
+                            let scaleFactor = previouosAnimationFrame.width / animationFrame.width
+                            transition.animateScale(view: snapshotView, from: scaleFactor, to: 1.0)
+                            snapshotView.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.2, removeOnCompletion: false, completion: { [weak snapshotView] _ in
+                                snapshotView?.removeFromSuperview()
+                            })
+                        }
+                        
+                        transition.setPosition(view: animationView, position: CGPoint(x: animationFrame.midX, y: animationFrame.midY))
+                        transition.setBounds(view: animationView, bounds: CGRect(origin: CGPoint(), size: animationFrame.size))
+                        transition.animateSublayerScale(view: animationView, from: previouosAnimationFrame.width / animationFrame.width, to: 1.0)
+                        animationView.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.18)
+                    } else if animationView.frame.size == animationFrame.size {
+                        transition.setFrame(view: animationView, frame: animationFrame)
+                    } else {
+                        animationView.frame = animationFrame
+                    }
+                }
+                
+                if updatePlayback {
+                    if case .animating = component.animation.mode {
+                        if !animationView.isAnimationPlaying {
+                            if let range = component.animation.range {
+                                animationView.play(fromProgress: range.0, toProgress: range.1, completion: { [weak self] _ in
+                                    self?.currentCompletion?()
+                                })
+                            } else {
+                                animationView.play { [weak self] _ in
+                                    self?.currentCompletion?()
+                                }
+                            }
+                        }
+                    } else {
+                        if case let .still(position) = component.animation.mode {
+                            switch position {
+                            case .begin:
+                                animationView.currentFrame = 0.0
+                            case .end:
+                                animationView.currentFrame = animationView.animation?.endFrame ?? 0.0
+                            }
+                        }
+                        if animationView.isAnimationPlaying {
+                            animationView.stop()
+                        }
+                    }
+                }
+            }
+            
+            return size
+        }
+    }
+    
+    public func makeView() -> View {
+        return View(frame: CGRect())
+    }
+    
+    public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+        return view.update(component: self, availableSize: availableSize, transition: transition)
+    }
+}

submodules/Components/MetalImageView/BUILD

@@ -0,0 +1,18 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "MetalImageView",
+    module_name = "MetalImageView",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/Display:Display",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/MetalImageView/Sources/MetalImageView.swift

@@ -0,0 +1,252 @@
+import Foundation
+import UIKit
+import Metal
+import Display
+
+private func alignUp(size: Int, align: Int) -> Int {
+    precondition(((align - 1) & align) == 0, "Align must be a power of two")
+
+    let alignmentMask = align - 1
+    return (size + alignmentMask) & ~alignmentMask
+}
+
+open class MetalImageLayer: CALayer {
+    fileprivate final class TextureStoragePool {
+        let width: Int
+        let height: Int
+        
+        private var items: [TextureStorage.Content] = []
+        
+        init(width: Int, height: Int) {
+            self.width = width
+            self.height = height
+        }
+        
+        func recycle(content: TextureStorage.Content) {
+            if self.items.count < 4 {
+                self.items.append(content)
+            } else {
+                print("Warning: over-recycling texture storage")
+            }
+        }
+        
+        func take() -> TextureStorage.Content? {
+            if self.items.isEmpty {
+                return nil
+            }
+            return self.items.removeLast()
+        }
+    }
+    
+    fileprivate final class TextureStorage {
+        final class Content {
+            #if !targetEnvironment(simulator)
+            let buffer: MTLBuffer
+            #endif
+            
+            let width: Int
+            let height: Int
+            let bytesPerRow: Int
+            let texture: MTLTexture
+            
+            init?(device: MTLDevice, width: Int, height: Int) {
+                if #available(iOS 12.0, *) {
+                    let bytesPerPixel = 4
+                    let pixelRowAlignment = device.minimumLinearTextureAlignment(for: .bgra8Unorm)
+                    let bytesPerRow = alignUp(size: width * bytesPerPixel, align: pixelRowAlignment)
+                    
+                    self.width = width
+                    self.height = height
+                    self.bytesPerRow = bytesPerRow
+                    
+                    #if targetEnvironment(simulator)
+                    let textureDescriptor = MTLTextureDescriptor()
+                    textureDescriptor.textureType = .type2D
+                    textureDescriptor.pixelFormat = .bgra8Unorm
+                    textureDescriptor.width = width
+                    textureDescriptor.height = height
+                    textureDescriptor.usage = [.renderTarget]
+                    textureDescriptor.storageMode = .shared
+                    
+                    guard let texture = device.makeTexture(descriptor: textureDescriptor) else {
+                        return nil
+                    }
+                    #else
+                    guard let buffer = device.makeBuffer(length: bytesPerRow * height, options: MTLResourceOptions.storageModeShared) else {
+                        return nil
+                    }
+                    self.buffer = buffer
+                    
+                    let textureDescriptor = MTLTextureDescriptor()
+                    textureDescriptor.textureType = .type2D
+                    textureDescriptor.pixelFormat = .bgra8Unorm
+                    textureDescriptor.width = width
+                    textureDescriptor.height = height
+                    textureDescriptor.usage = [.renderTarget]
+                    textureDescriptor.storageMode = buffer.storageMode
+                    
+                    guard let texture = buffer.makeTexture(descriptor: textureDescriptor, offset: 0, bytesPerRow: bytesPerRow) else {
+                        return nil
+                    }
+                    #endif
+                    
+                    self.texture = texture
+                } else {
+                    return nil
+                }
+            }
+        }
+        
+        private weak var pool: TextureStoragePool?
+        let content: Content
+        private var isInvalidated: Bool = false
+        
+        init(pool: TextureStoragePool, content: Content) {
+            self.pool = pool
+            self.content = content
+        }
+        
+        deinit {
+            if !self.isInvalidated {
+                self.pool?.recycle(content: self.content)
+            }
+        }
+        
+        func createCGImage() -> CGImage? {
+            if self.isInvalidated {
+                return nil
+            }
+            self.isInvalidated = true
+            
+            #if targetEnvironment(simulator)
+            guard let data = NSMutableData(capacity: self.content.bytesPerRow * self.content.height) else {
+                return nil
+            }
+            data.length = self.content.bytesPerRow * self.content.height
+            self.content.texture.getBytes(data.mutableBytes, bytesPerRow: self.content.bytesPerRow, bytesPerImage: self.content.bytesPerRow * self.content.height, from: MTLRegion(origin: MTLOrigin(), size: MTLSize(width: self.content.width, height: self.content.height, depth: 1)), mipmapLevel: 0, slice: 0)
+            
+            guard let dataProvider = CGDataProvider(data: data as CFData) else {
+                return nil
+            }
+            #else
+            let content = self.content
+            let pool = self.pool
+            guard let dataProvider = CGDataProvider(data: Data(bytesNoCopy: self.content.buffer.contents(), count: self.content.buffer.length, deallocator: .custom { [weak pool] _, _ in
+                guard let pool = pool else {
+                    return
+                }
+                pool.recycle(content: content)
+            }) as CFData) else {
+                return nil
+            }
+            #endif
+
+            guard let image = CGImage(
+                width: Int(self.content.width),
+                height: Int(self.content.height),
+                bitsPerComponent: 8,
+                bitsPerPixel: 8 * 4,
+                bytesPerRow: self.content.bytesPerRow,
+                space: DeviceGraphicsContextSettings.shared.colorSpace,
+                bitmapInfo: DeviceGraphicsContextSettings.shared.transparentBitmapInfo,
+                provider: dataProvider,
+                decode: nil,
+                shouldInterpolate: true,
+                intent: .defaultIntent
+            ) else {
+                return nil
+            }
+            
+            return image
+        }
+    }
+    
+    public final class Drawable {
+        private weak var renderer: Renderer?
+        fileprivate let textureStorage: TextureStorage
+        public var texture: MTLTexture {
+            return self.textureStorage.content.texture
+        }
+        
+        fileprivate init(renderer: Renderer, textureStorage: TextureStorage) {
+            self.renderer = renderer
+            self.textureStorage = textureStorage
+        }
+        
+        public func present(completion: @escaping () -> Void) {
+            self.renderer?.present(drawable: self)
+            completion()
+        }
+    }
+    
+    public final class Renderer {
+        public var device: MTLDevice?
+        private var storagePool: TextureStoragePool?
+        
+        public var imageUpdated: ((CGImage?) -> Void)?
+        
+        public var drawableSize: CGSize = CGSize() {
+            didSet {
+                if self.drawableSize != oldValue {
+                    if !self.drawableSize.width.isZero && !self.drawableSize.height.isZero {
+                        self.storagePool = TextureStoragePool(width: Int(self.drawableSize.width), height: Int(self.drawableSize.height))
+                    } else {
+                        self.storagePool = nil
+                    }
+                }
+            }
+        }
+        
+        public func nextDrawable() -> Drawable? {
+            guard let device = self.device else {
+                return nil
+            }
+            guard let storagePool = self.storagePool else {
+                return nil
+            }
+
+            if let content = storagePool.take() {
+                return Drawable(renderer: self, textureStorage: TextureStorage(pool: storagePool, content: content))
+            } else {
+                guard let content = TextureStorage.Content(device: device, width: storagePool.width, height: storagePool.height) else {
+                    return nil
+                }
+                return Drawable(renderer: self, textureStorage: TextureStorage(pool: storagePool, content: content))
+            }
+        }
+        
+        fileprivate func present(drawable: Drawable) {
+            if let imageUpdated = self.imageUpdated {
+                imageUpdated(drawable.textureStorage.createCGImage())
+            }
+        }
+    }
+    
+    public let renderer = Renderer()
+    
+    override public init() {
+        super.init()
+        
+        self.renderer.imageUpdated = { [weak self] image in
+            self?.contents = image
+        }
+    }
+    
+    override public init(layer: Any) {
+        preconditionFailure()
+    }
+    
+    required public init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    override open func action(forKey event: String) -> CAAction? {
+        return nullAction
+    }
+}
+
+open class MetalImageView: UIView {
+    public static override var layerClass: AnyClass {
+        return MetalImageLayer.self
+    }
+}

submodules/Components/MultilineTextComponent/BUILD

@@ -0,0 +1,20 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "MultilineTextComponent",
+    module_name = "MultilineTextComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/Display:Display",
+        "//submodules/ComponentFlow:ComponentFlow",
+        "//submodules/Markdown:Markdown",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/MultilineTextComponent/Sources/MultilineTextComponent.swift

@@ -0,0 +1,194 @@
+import Foundation
+import UIKit
+import ComponentFlow
+import Display
+import Markdown
+
+public final class MultilineTextComponent: Component {
+    public enum TextContent: Equatable {
+        case plain(NSAttributedString)
+        case markdown(text: String, attributes: MarkdownAttributes)
+    }
+    
+    public let text: TextContent
+    public let horizontalAlignment: NSTextAlignment
+    public let verticalAlignment: TextVerticalAlignment
+    public let truncationType: CTLineTruncationType
+    public let maximumNumberOfLines: Int
+    public let lineSpacing: CGFloat
+    public let cutout: TextNodeCutout?
+    public let insets: UIEdgeInsets
+    public let tintColor: UIColor?
+    public let textShadowColor: UIColor?
+    public let textShadowBlur: CGFloat?
+    public let textStroke: (UIColor, CGFloat)?
+    public let highlightColor: UIColor?
+    public let highlightInset: UIEdgeInsets
+    public let highlightAction: (([NSAttributedString.Key: Any]) -> NSAttributedString.Key?)?
+    public let tapAction: (([NSAttributedString.Key: Any], Int) -> Void)?
+    public let longTapAction: (([NSAttributedString.Key: Any], Int) -> Void)?
+    
+    public init(
+        text: TextContent,
+        horizontalAlignment: NSTextAlignment = .natural,
+        verticalAlignment: TextVerticalAlignment = .top,
+        truncationType: CTLineTruncationType = .end,
+        maximumNumberOfLines: Int = 1,
+        lineSpacing: CGFloat = 0.0,
+        cutout: TextNodeCutout? = nil,
+        insets: UIEdgeInsets = UIEdgeInsets(),
+        tintColor: UIColor? = nil,
+        textShadowColor: UIColor? = nil,
+        textShadowBlur: CGFloat? = nil,
+        textStroke: (UIColor, CGFloat)? = nil,
+        highlightColor: UIColor? = nil,
+        highlightInset: UIEdgeInsets = .zero,
+        highlightAction: (([NSAttributedString.Key: Any]) -> NSAttributedString.Key?)? = nil,
+        tapAction: (([NSAttributedString.Key: Any], Int) -> Void)? = nil,
+        longTapAction: (([NSAttributedString.Key: Any], Int) -> Void)? = nil
+    ) {
+        self.text = text
+        self.horizontalAlignment = horizontalAlignment
+        self.verticalAlignment = verticalAlignment
+        self.truncationType = truncationType
+        self.maximumNumberOfLines = maximumNumberOfLines
+        self.lineSpacing = lineSpacing
+        self.cutout = cutout
+        self.insets = insets
+        self.tintColor = tintColor
+        self.textShadowColor = textShadowColor
+        self.textShadowBlur = textShadowBlur
+        self.textStroke = textStroke
+        self.highlightColor = highlightColor
+        self.highlightInset = highlightInset
+        self.highlightAction = highlightAction
+        self.tapAction = tapAction
+        self.longTapAction = longTapAction
+    }
+    
+    public static func ==(lhs: MultilineTextComponent, rhs: MultilineTextComponent) -> Bool {
+        if lhs.text != rhs.text {
+            return false
+        }
+        if lhs.horizontalAlignment != rhs.horizontalAlignment {
+            return false
+        }
+        if lhs.verticalAlignment != rhs.verticalAlignment {
+            return false
+        }
+        if lhs.truncationType != rhs.truncationType {
+            return false
+        }
+        if lhs.maximumNumberOfLines != rhs.maximumNumberOfLines {
+            return false
+        }
+        if lhs.lineSpacing != rhs.lineSpacing {
+            return false
+        }
+        if lhs.cutout != rhs.cutout {
+            return false
+        }
+        if lhs.insets != rhs.insets {
+            return false
+        }
+        if lhs.tintColor != rhs.tintColor {
+            return false
+        }
+        if let lhsTextShadowColor = lhs.textShadowColor, let rhsTextShadowColor = rhs.textShadowColor {
+            if !lhsTextShadowColor.isEqual(rhsTextShadowColor) {
+                return false
+            }
+        } else if (lhs.textShadowColor != nil) != (rhs.textShadowColor != nil) {
+            return false
+        }
+        if lhs.textShadowBlur != rhs.textShadowBlur {
+            return false
+        }
+        
+        if let lhsTextStroke = lhs.textStroke, let rhsTextStroke = rhs.textStroke {
+            if !lhsTextStroke.0.isEqual(rhsTextStroke.0) {
+                return false
+            }
+            if lhsTextStroke.1 != rhsTextStroke.1 {
+                return false
+            }
+        } else if (lhs.textShadowColor != nil) != (rhs.textShadowColor != nil) {
+            return false
+        }
+        
+        if let lhsHighlightColor = lhs.highlightColor, let rhsHighlightColor = rhs.highlightColor {
+            if !lhsHighlightColor.isEqual(rhsHighlightColor) {
+                return false
+            }
+        } else if (lhs.highlightColor != nil) != (rhs.highlightColor != nil) {
+            return false
+        }
+        
+        if lhs.highlightInset != rhs.highlightInset {
+            return false
+        }
+        
+        return true
+    }
+    
+    public final class View: ImmediateTextView {
+        public func update(component: MultilineTextComponent, availableSize: CGSize, transition: ComponentTransition) -> CGSize {
+            let attributedString: NSAttributedString
+            switch component.text {
+            case let .plain(string):
+                attributedString = string
+            case let .markdown(text, attributes):
+                attributedString = parseMarkdownIntoAttributedString(text, attributes: attributes)
+            }
+            
+            //let previousText = self.attributedText?.string
+                                        
+            self.attributedText = attributedString
+            self.maximumNumberOfLines = component.maximumNumberOfLines
+            self.truncationType = component.truncationType
+            self.textAlignment = component.horizontalAlignment
+            self.verticalAlignment = component.verticalAlignment
+            self.lineSpacing = component.lineSpacing
+            self.cutout = component.cutout
+            self.insets = component.insets
+            self.textShadowColor = component.textShadowColor
+            self.textShadowBlur = component.textShadowBlur
+            self.textStroke = component.textStroke
+            self.linkHighlightColor = component.highlightColor
+            self.linkHighlightInset = component.highlightInset
+            self.highlightAttributeAction = component.highlightAction
+            self.tapAttributeAction = component.tapAction
+            self.longTapAttributeAction = component.longTapAction
+                        
+            /*if case let .curve(duration, _) = transition.animation, let previousText = previousText, previousText != attributedString.string {
+                if let snapshotView = self.snapshotView(afterScreenUpdates: false) {
+                    snapshotView.center = self.center
+                    self.superview?.addSubview(snapshotView)
+                    
+                    snapshotView.layer.animateAlpha(from: 1.0, to: 0.0, duration: duration, removeOnCompletion: false, completion: { [weak snapshotView] _ in
+                        snapshotView?.removeFromSuperview()
+                    })
+                    self.layer.animateAlpha(from: 0.0, to: 1.0, duration: duration)
+                }
+            }*/
+            
+            let size = self.updateLayout(availableSize)
+                 
+            if let tintColor = component.tintColor {
+                transition.setTintColor(layer: self.layer, color: tintColor)
+            } else {
+                self.layer.layerTintColor = nil
+            }
+            
+            return size
+        }
+    }
+    
+    public func makeView() -> View {
+        return View()
+    }
+    
+    public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+        return view.update(component: self, availableSize: availableSize, transition: transition)
+    }
+}

submodules/Components/MultilineTextWithEntitiesComponent/BUILD

@@ -0,0 +1,26 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "MultilineTextWithEntitiesComponent",
+    module_name = "MultilineTextWithEntitiesComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/Display:Display",
+        "//submodules/ComponentFlow:ComponentFlow",
+        "//submodules/Markdown:Markdown",
+        "//submodules/TextFormat:TextFormat",
+        "//submodules/AccountContext:AccountContext",
+        "//submodules/TelegramUI/Components/EmojiTextAttachmentView:EmojiTextAttachmentView",
+        "//submodules/TelegramUI/Components/AnimationCache:AnimationCache",
+        "//submodules/TelegramUI/Components/MultiAnimationRenderer:MultiAnimationRenderer",
+        "//submodules/TelegramUI/Components/TextNodeWithEntities:TextNodeWithEntities",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/MultilineTextWithEntitiesComponent/Sources/MultilineTextWithEntitiesComponent.swift

@@ -0,0 +1,343 @@
+import Foundation
+import UIKit
+import ComponentFlow
+import Display
+import Markdown
+import TextNodeWithEntities
+import AccountContext
+import AnimationCache
+import MultiAnimationRenderer
+
+public final class MultilineTextWithEntitiesComponent: Component {
+    public final class External {
+        public fileprivate(set) var layout: TextNodeLayout?
+        
+        public init() {
+        }
+    }
+    
+    public enum TextContent: Equatable {
+        case plain(NSAttributedString)
+        case markdown(text: String, attributes: MarkdownAttributes)
+    }
+    
+    public let external: External?
+    public let context: AccountContext?
+    public let animationCache: AnimationCache?
+    public let animationRenderer: MultiAnimationRenderer?
+    public let placeholderColor: UIColor?
+    
+    public let text: TextContent
+    public let horizontalAlignment: NSTextAlignment
+    public let verticalAlignment: TextVerticalAlignment
+    public let truncationType: CTLineTruncationType
+    public let maximumNumberOfLines: Int
+    public let lineSpacing: CGFloat
+    public let cutout: TextNodeCutout?
+    public let insets: UIEdgeInsets
+    public let spoilerColor: UIColor
+    public let textShadowColor: UIColor?
+    public let textStroke: (UIColor, CGFloat)?
+    public let highlightColor: UIColor?
+    public let highlightInset: UIEdgeInsets
+    public let handleSpoilers: Bool
+    public let manualVisibilityControl: Bool
+    public let resetAnimationsOnVisibilityChange: Bool
+    public let displaysAsynchronously: Bool
+    public let maxWidth: CGFloat?
+    public let highlightAction: (([NSAttributedString.Key: Any]) -> NSAttributedString.Key?)?
+    public let tapAction: (([NSAttributedString.Key: Any], Int) -> Void)?
+    public let longTapAction: (([NSAttributedString.Key: Any], Int) -> Void)?
+    
+    public init(
+        external: External? = nil,
+        context: AccountContext?,
+        animationCache: AnimationCache?,
+        animationRenderer: MultiAnimationRenderer?,
+        placeholderColor: UIColor?,
+        text: TextContent,
+        horizontalAlignment: NSTextAlignment = .natural,
+        verticalAlignment: TextVerticalAlignment = .top,
+        truncationType: CTLineTruncationType = .end,
+        maximumNumberOfLines: Int = 1,
+        lineSpacing: CGFloat = 0.0,
+        cutout: TextNodeCutout? = nil,
+        insets: UIEdgeInsets = UIEdgeInsets(),
+        spoilerColor: UIColor = .black,
+        textShadowColor: UIColor? = nil,
+        textStroke: (UIColor, CGFloat)? = nil,
+        highlightColor: UIColor? = nil,
+        highlightInset: UIEdgeInsets = .zero,
+        handleSpoilers: Bool = false,
+        manualVisibilityControl: Bool = false,
+        resetAnimationsOnVisibilityChange: Bool = false,
+        displaysAsynchronously: Bool = true,
+        maxWidth: CGFloat? = nil,
+        highlightAction: (([NSAttributedString.Key: Any]) -> NSAttributedString.Key?)? = nil,
+        tapAction: (([NSAttributedString.Key: Any], Int) -> Void)? = nil,
+        longTapAction: (([NSAttributedString.Key: Any], Int) -> Void)? = nil
+    ) {
+        self.external = external
+        self.context = context
+        self.animationCache = animationCache
+        self.animationRenderer = animationRenderer
+        self.placeholderColor = placeholderColor
+        self.text = text
+        self.horizontalAlignment = horizontalAlignment
+        self.verticalAlignment = verticalAlignment
+        self.truncationType = truncationType
+        self.maximumNumberOfLines = maximumNumberOfLines
+        self.lineSpacing = lineSpacing
+        self.cutout = cutout
+        self.insets = insets
+        self.spoilerColor = spoilerColor
+        self.textShadowColor = textShadowColor
+        self.textStroke = textStroke
+        self.highlightColor = highlightColor
+        self.highlightInset = highlightInset
+        self.highlightAction = highlightAction
+        self.handleSpoilers = handleSpoilers
+        self.manualVisibilityControl = manualVisibilityControl
+        self.resetAnimationsOnVisibilityChange = resetAnimationsOnVisibilityChange
+        self.displaysAsynchronously = displaysAsynchronously
+        self.maxWidth = maxWidth
+        self.tapAction = tapAction
+        self.longTapAction = longTapAction
+    }
+    
+    public static func ==(lhs: MultilineTextWithEntitiesComponent, rhs: MultilineTextWithEntitiesComponent) -> Bool {
+        if lhs.external !== rhs.external {
+            return false
+        }
+        if lhs.text != rhs.text {
+            return false
+        }
+        if lhs.horizontalAlignment != rhs.horizontalAlignment {
+            return false
+        }
+        if lhs.verticalAlignment != rhs.verticalAlignment {
+            return false
+        }
+        if lhs.truncationType != rhs.truncationType {
+            return false
+        }
+        if lhs.maximumNumberOfLines != rhs.maximumNumberOfLines {
+            return false
+        }
+        if lhs.lineSpacing != rhs.lineSpacing {
+            return false
+        }
+        if lhs.cutout != rhs.cutout {
+            return false
+        }
+        if lhs.insets != rhs.insets {
+            return false
+        }
+        if lhs.handleSpoilers != rhs.handleSpoilers {
+            return false
+        }
+        if lhs.manualVisibilityControl != rhs.manualVisibilityControl {
+            return false
+        }
+        if lhs.resetAnimationsOnVisibilityChange != rhs.resetAnimationsOnVisibilityChange {
+            return false
+        }
+        if lhs.displaysAsynchronously != rhs.displaysAsynchronously {
+            return false
+        }
+        if lhs.maxWidth != rhs.maxWidth {
+            return false
+        }
+        if let lhsTextShadowColor = lhs.textShadowColor, let rhsTextShadowColor = rhs.textShadowColor {
+            if !lhsTextShadowColor.isEqual(rhsTextShadowColor) {
+                return false
+            }
+        } else if (lhs.textShadowColor != nil) != (rhs.textShadowColor != nil) {
+            return false
+        }
+        
+        if let lhsTextStroke = lhs.textStroke, let rhsTextStroke = rhs.textStroke {
+            if !lhsTextStroke.0.isEqual(rhsTextStroke.0) {
+                return false
+            }
+            if lhsTextStroke.1 != rhsTextStroke.1 {
+                return false
+            }
+        } else if (lhs.textShadowColor != nil) != (rhs.textShadowColor != nil) {
+            return false
+        }
+        
+        if let lhsHighlightColor = lhs.highlightColor, let rhsHighlightColor = rhs.highlightColor {
+            if !lhsHighlightColor.isEqual(rhsHighlightColor) {
+                return false
+            }
+        } else if (lhs.highlightColor != nil) != (rhs.highlightColor != nil) {
+            return false
+        }
+        
+        if lhs.highlightInset != rhs.highlightInset {
+            return false
+        }
+        
+        return true
+    }
+    
+    public final class View: UIView {
+        var spoilerTextNode: ImmediateTextNodeWithEntities?
+        let textNode: ImmediateTextNodeWithEntities
+        
+        public override init(frame: CGRect) {
+            self.textNode = ImmediateTextNodeWithEntities()
+            
+            
+            super.init(frame: frame)
+            
+            self.addSubview(self.textNode.view)
+        }
+        
+        required init?(coder: NSCoder) {
+            fatalError("init(coder:) has not been implemented")
+        }
+        
+        public func attributes(at point: CGPoint) -> (Int, [NSAttributedString.Key: Any])? {
+            if let result = self.textNode.attributesAtPoint(CGPoint(x: point.x - self.textNode.frame.minX, y: point.y - self.textNode.frame.minY)) {
+                return result
+            }
+            return nil
+        }
+        
+        public var isSpoilerConcealed: Bool {
+            if let dustNode = self.textNode.dustNode, !dustNode.isRevealed {
+                return true
+            }
+            return false
+        }
+        
+        public var hasRTL: Bool {
+            return self.textNode.cachedLayout?.hasRTL ?? false
+        }
+        
+        public func updateVisibility(_ isVisible: Bool) {
+            self.textNode.visibility = isVisible
+        }
+        
+        public func update(component: MultilineTextWithEntitiesComponent, availableSize: CGSize, transition: ComponentTransition) -> CGSize {
+            self.textNode.displaysAsynchronously = component.displaysAsynchronously
+            
+            let attributedString: NSAttributedString
+            switch component.text {
+            case let .plain(string):
+                attributedString = string
+            case let .markdown(text, attributes):
+                attributedString = parseMarkdownIntoAttributedString(text, attributes: attributes)
+            }
+            
+            let previousText = self.textNode.attributedText?.string
+            
+            self.textNode.attributedText = attributedString
+            self.textNode.maximumNumberOfLines = component.maximumNumberOfLines
+            self.textNode.truncationType = component.truncationType
+            self.textNode.textAlignment = component.horizontalAlignment
+            self.textNode.verticalAlignment = component.verticalAlignment
+            self.textNode.lineSpacing = component.lineSpacing
+            self.textNode.cutout = component.cutout
+            self.textNode.insets = component.insets
+            self.textNode.textShadowColor = component.textShadowColor
+            self.textNode.textStroke = component.textStroke
+            self.textNode.linkHighlightColor = component.highlightColor
+            self.textNode.linkHighlightInset = component.highlightInset
+            self.textNode.highlightAttributeAction = component.highlightAction
+            self.textNode.tapAttributeAction = component.tapAction
+            self.textNode.longTapAttributeAction = component.longTapAction
+            self.textNode.spoilerColor = component.spoilerColor
+            
+            self.textNode.resetEmojiToFirstFrameAutomatically = component.resetAnimationsOnVisibilityChange
+                                    
+            if case let .curve(duration, _) = transition.animation, let previousText = previousText, previousText != attributedString.string {
+                if let snapshotView = self.snapshotContentTree() {
+                    snapshotView.center = self.center
+                    self.superview?.addSubview(snapshotView)
+                    
+                    snapshotView.layer.animateAlpha(from: 1.0, to: 0.0, duration: duration, removeOnCompletion: false, completion: { [weak snapshotView] _ in
+                        snapshotView?.removeFromSuperview()
+                    })
+                    self.layer.animateAlpha(from: 0.0, to: 1.0, duration: duration)
+                }
+            }
+            
+            if !component.manualVisibilityControl {
+                self.textNode.visibility = true
+            }
+            if let context = component.context, let animationCache = component.animationCache, let animationRenderer = component.animationRenderer, let placeholderColor = component.placeholderColor {
+                self.textNode.arguments = TextNodeWithEntities.Arguments(
+                    context: context,
+                    cache: animationCache,
+                    renderer: animationRenderer,
+                    placeholderColor: placeholderColor,
+                    attemptSynchronous: false
+                )
+            }
+            
+            var constrainedSize = availableSize
+            if let maxWidth = component.maxWidth {
+                constrainedSize.width = maxWidth
+            }
+            
+            let layoutInfo = self.textNode.updateLayoutFullInfo(constrainedSize)
+            self.textNode.frame = CGRect(origin: .zero, size: layoutInfo.size)
+            
+            if component.handleSpoilers {
+                let spoilerTextNode: ImmediateTextNodeWithEntities
+                if let current = self.spoilerTextNode {
+                    spoilerTextNode = current
+                } else {
+                    spoilerTextNode = ImmediateTextNodeWithEntities()
+                    spoilerTextNode.alpha = 0.0
+                    self.spoilerTextNode = spoilerTextNode
+                    
+                    self.textNode.dustNode?.textNode = spoilerTextNode
+                }
+                
+                spoilerTextNode.displaySpoilers = true
+                spoilerTextNode.displaySpoilerEffect = false
+                spoilerTextNode.attributedText = attributedString
+                spoilerTextNode.maximumNumberOfLines = component.maximumNumberOfLines
+                spoilerTextNode.truncationType = component.truncationType
+                spoilerTextNode.textAlignment = component.horizontalAlignment
+                spoilerTextNode.verticalAlignment = component.verticalAlignment
+                spoilerTextNode.lineSpacing = component.lineSpacing
+                spoilerTextNode.cutout = component.cutout
+                spoilerTextNode.insets = component.insets
+                spoilerTextNode.textShadowColor = component.textShadowColor
+                spoilerTextNode.textStroke = component.textStroke
+                spoilerTextNode.isUserInteractionEnabled = false
+                
+                let size = spoilerTextNode.updateLayout(constrainedSize)
+                spoilerTextNode.frame = CGRect(origin: .zero, size: size)
+                
+                if spoilerTextNode.view.superview == nil {
+                    self.addSubview(spoilerTextNode.view)
+                }
+            } else if let spoilerTextNode = self.spoilerTextNode {
+                self.spoilerTextNode = nil
+                spoilerTextNode.view.removeFromSuperview()
+                
+                self.textNode.dustNode?.textNode = nil
+            }
+            
+            if let external = component.external {
+                external.layout = layoutInfo
+            }
+            
+            return layoutInfo.size
+        }
+    }
+    
+    public func makeView() -> View {
+        return View()
+    }
+    
+    public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+        return view.update(component: self, availableSize: availableSize, transition: transition)
+    }
+}

submodules/Components/PagerComponent/BUILD

@@ -0,0 +1,20 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "PagerComponent",
+    module_name = "PagerComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/Display:Display",
+        "//submodules/ComponentFlow:ComponentFlow",
+        "//submodules/DirectionalPanGesture:DirectionalPanGesture",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/ProgressIndicatorComponent/BUILD

@@ -0,0 +1,19 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "ProgressIndicatorComponent",
+    module_name = "ProgressIndicatorComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/ComponentFlow:ComponentFlow",
+        "//submodules/Display:Display",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/ProgressIndicatorComponent/Sources/ProgressIndicatorComponent.swift

@@ -0,0 +1,113 @@
+import Foundation
+import UIKit
+import Display
+import ComponentFlow
+
+public final class ProgressIndicatorComponent: Component {
+    public let diameter: CGFloat
+    public let value: Double
+    public let backgroundColor: UIColor
+    public let foregroundColor: UIColor
+    
+    public init(
+        diameter: CGFloat,
+        backgroundColor: UIColor,
+        foregroundColor: UIColor,
+        value: Double
+    ) {
+        self.diameter = diameter
+        self.backgroundColor = backgroundColor
+        self.foregroundColor = foregroundColor
+        self.value = value
+    }
+
+    public static func ==(lhs: ProgressIndicatorComponent, rhs: ProgressIndicatorComponent) -> Bool {
+        if lhs.diameter != rhs.diameter {
+            return false
+        }
+        if lhs.backgroundColor != rhs.backgroundColor {
+            return false
+        }
+        if lhs.foregroundColor != rhs.foregroundColor {
+            return false
+        }
+        if lhs.value != rhs.value {
+            return false
+        }
+        return true
+    }
+    
+    public final class View: UIView {
+        private var currentComponent: ProgressIndicatorComponent?
+        
+        private let foregroundShapeLayer: SimpleShapeLayer
+        
+        public init() {
+            self.foregroundShapeLayer = SimpleShapeLayer()
+            self.foregroundShapeLayer.isOpaque = false
+            self.foregroundShapeLayer.backgroundColor = nil
+            self.foregroundShapeLayer.fillColor = nil
+            self.foregroundShapeLayer.lineCap = .round
+            
+            super.init(frame: CGRect())
+            
+            let shapeLayer = self.layer as! CAShapeLayer
+            shapeLayer.isOpaque = false
+            shapeLayer.backgroundColor = nil
+            shapeLayer.fillColor = nil
+            
+            self.layer.addSublayer(self.foregroundShapeLayer)
+        }
+        
+        required public init?(coder: NSCoder) {
+            fatalError("init(coder:) has not been implemented")
+        }
+        
+        override public static var layerClass: AnyClass {
+            return CAShapeLayer.self
+        }
+        
+        func update(component: ProgressIndicatorComponent, availableSize: CGSize, transition: ComponentTransition) -> CGSize {
+            let lineWidth: CGFloat = 1.33
+            let size = CGSize(width: component.diameter, height: component.diameter)
+
+            let shapeLayer = self.layer as! CAShapeLayer
+            
+            if self.currentComponent?.backgroundColor != component.backgroundColor {
+                shapeLayer.strokeColor = component.backgroundColor.cgColor
+                shapeLayer.lineWidth = lineWidth
+            }
+            
+            if self.currentComponent?.foregroundColor != component.foregroundColor {
+                self.foregroundShapeLayer.strokeColor = component.foregroundColor.cgColor
+                self.foregroundShapeLayer.lineWidth = lineWidth
+            }
+            
+            if self.currentComponent?.diameter != component.diameter {
+                let path = UIBezierPath(arcCenter: CGPoint(x: component.diameter / 2.0, y: component.diameter / 2.0), radius: component.diameter / 2.0, startAngle: -CGFloat.pi / 2.0, endAngle: 2.0 * CGFloat.pi - CGFloat.pi / 2.0, clockwise: true).cgPath
+                shapeLayer.path = path
+                self.foregroundShapeLayer.path = path
+                
+                self.foregroundShapeLayer.frame = CGRect(origin: CGPoint(), size: size)
+            }
+            
+            if self.currentComponent != nil {
+                let previousValue: CGFloat = self.foregroundShapeLayer.presentation()?.strokeEnd ?? self.foregroundShapeLayer.strokeEnd
+                self.foregroundShapeLayer.animate(from: CGFloat(previousValue) as NSNumber, to: CGFloat(component.value) as NSNumber, keyPath: "strokeEnd", timingFunction: CAMediaTimingFunctionName.easeOut.rawValue, duration: 0.12)
+            }
+            self.foregroundShapeLayer.strokeEnd = CGFloat(component.value)
+            
+            self.currentComponent = component
+            
+            return size
+        }
+    }
+    
+    public func makeView() -> View {
+        return View()
+    }
+    
+    public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+        return view.update(component: self, availableSize: availableSize, transition: transition)
+    }
+}

submodules/Components/ReactionButtonListComponent/BUILD

@@ -0,0 +1,33 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "ReactionButtonListComponent",
+    module_name = "ReactionButtonListComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/Display:Display",
+        "//submodules/ComponentFlow:ComponentFlow",
+        "//submodules/SSignalKit/SwiftSignalKit:SwiftSignalKit",
+        "//submodules/Postbox:Postbox",
+        "//submodules/TelegramCore:TelegramCore",
+        "//submodules/AccountContext:AccountContext",
+        "//submodules/TelegramPresentationData:TelegramPresentationData",
+        "//submodules/WebPBinding:WebPBinding",
+        "//submodules/AnimatedAvatarSetNode:AnimatedAvatarSetNode",
+        "//submodules/Components/ReactionImageComponent:ReactionImageComponent",
+        "//submodules/TelegramUI/Components/EmojiTextAttachmentView:EmojiTextAttachmentView",
+        "//submodules/TelegramUI/Components/AnimationCache:AnimationCache",
+        "//submodules/TelegramUI/Components/MultiAnimationRenderer:MultiAnimationRenderer",
+        "//submodules/TextFormat:TextFormat",
+        "//submodules/AppBundle",
+        "//submodules/TelegramUI/Components/AnimatedTextComponent",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/ReactionImageComponent/BUILD

@@ -0,0 +1,27 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "ReactionImageComponent",
+    module_name = "ReactionImageComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/Display:Display",
+        "//submodules/ComponentFlow:ComponentFlow",
+        "//submodules/SSignalKit/SwiftSignalKit:SwiftSignalKit",
+        "//submodules/TelegramCore:TelegramCore",
+        "//submodules/AccountContext:AccountContext",
+        "//submodules/WebPBinding:WebPBinding",
+        "//submodules/rlottie:RLottieBinding",
+        "//submodules/GZip:GZip",
+        "//submodules/TelegramUI/Components/AnimationCache:AnimationCache",
+        "//submodules/TelegramUI/Components/EmojiTextAttachmentView:EmojiTextAttachmentView",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/ReactionImageComponent/Sources/ReactionImageComponent.swift

@@ -0,0 +1,194 @@
+import Foundation
+import AsyncDisplayKit
+import Display
+import ComponentFlow
+import SwiftSignalKit
+import TelegramCore
+import AccountContext
+import TelegramPresentationData
+import UIKit
+import WebPBinding
+import RLottieBinding
+import GZip
+import AnimationCache
+import EmojiTextAttachmentView
+
+public let sharedReactionStaticImage = Queue(name: "SharedReactionStaticImage", qos: .default)
+
+public func reactionStaticImage(context: AccountContext, animation: TelegramMediaFile, pixelSize: CGSize, queue: Queue) -> Signal<EngineMediaResource.ResourceData, NoError> {
+    return context.engine.resources.custom(id: "\(animation.resource.id.stringRepresentation):reaction-static-\(pixelSize.width)x\(pixelSize.height)-v10", fetch: EngineMediaResource.Fetch {
+        return Signal { subscriber in
+            let fetchDisposable = fetchedMediaResource(mediaBox: context.account.postbox.mediaBox, userLocation: .other, userContentType: .image, reference: MediaResourceReference.standalone(resource: animation.resource)).start()
+            
+            var customColor: UIColor?
+            if animation.isCustomTemplateEmoji {
+                customColor = nil
+            }
+            
+            let fetchFrame = animationCacheFetchFile(context: context, userLocation: .other, userContentType: .sticker, resource: MediaResourceReference.standalone(resource: animation.resource), type: AnimationCacheAnimationType(file: animation), keyframeOnly: true, customColor: customColor)
+            
+            class AnimationCacheItemWriterImpl: AnimationCacheItemWriter {
+                let queue: Queue
+                private let frameReceived: (UIImage) -> Void
+                
+                init(queue: Queue, frameReceived: @escaping (UIImage) -> Void) {
+                    self.queue = queue
+                    self.frameReceived = frameReceived
+                }
+                
+                var isCancelled: Bool {
+                    return false
+                }
+                
+                func add(with drawingBlock: (AnimationCacheItemDrawingSurface) -> Double?, proposedWidth: Int, proposedHeight: Int, insertKeyframe: Bool) {
+                    if let renderContext = DrawingContext(size: CGSize(width: proposedWidth, height: proposedHeight), scale: 1.0, clear: true) {
+                        let _ = drawingBlock(AnimationCacheItemDrawingSurface(
+                            argb: renderContext.bytes.assumingMemoryBound(to: UInt8.self),
+                            width: Int(renderContext.scaledSize.width),
+                            height: Int(renderContext.scaledSize.height),
+                            bytesPerRow: renderContext.bytesPerRow,
+                            length: renderContext.length
+                        ))
+                        if let image = renderContext.generateImage() {
+                            self.frameReceived(image)
+                        }
+                    }
+                }
+                
+                func finish() {
+                }
+            }
+            let innerWriter = AnimationCacheItemWriterImpl(queue: queue, frameReceived: { image in
+                guard let pngData = image.pngData() else {
+                    return
+                }
+                
+                let tempFile = EngineTempBox.shared.tempFile(fileName: "image.png")
+                guard let _ = try? pngData.write(to: URL(fileURLWithPath: tempFile.path)) else {
+                    return
+                }
+                
+                subscriber.putNext(.moveTempFile(file: tempFile))
+                subscriber.putCompletion()
+            })
+            
+            let dataDisposable = fetchFrame(AnimationCacheFetchOptions(
+                size: pixelSize,
+                writer: innerWriter,
+                firstFrameOnly: true
+            ))
+            
+            /*let dataDisposable = context.account.postbox.mediaBox.resourceData(animation.resource).start(next: { data in
+                if !data.complete {
+                    return
+                }
+                
+               
+                
+                guard let data = try? Data(contentsOf: URL(fileURLWithPath: data.path)) else {
+                    return
+                }
+                guard let unpackedData = TGGUnzipData(data, 5 * 1024 * 1024) else {
+                    return
+                }
+                guard let instance = LottieInstance(data: unpackedData, fitzModifier: .none, colorReplacements: nil, cacheKey: "") else {
+                    return
+                }
+                
+                
+
+                instance.renderFrame(with: Int32(instance.frameCount - 1), into: renderContext.bytes.assumingMemoryBound(to: UInt8.self), width: Int32(renderContext.size.width * renderContext.scale), height: Int32(renderContext.size.height * renderContext.scale), bytesPerRow: Int32(renderContext.bytesPerRow))
+                
+                
+            })*/
+            
+            return ActionDisposable {
+                fetchDisposable.dispose()
+                dataDisposable.dispose()
+            }
+        }
+    })
+}
+
+public final class ReactionImageNode: ASDisplayNode {
+    private var disposable: Disposable?
+    private let size: CGSize
+    private let isAnimation: Bool
+    
+    private let iconNode: ASImageNode
+    
+    public init(context: AccountContext, availableReactions: AvailableReactions?, reaction: MessageReaction.Reaction, displayPixelSize: CGSize) {
+        self.iconNode = ASImageNode()
+        
+        var file: TelegramMediaFile?
+        var animationFile: TelegramMediaFile?
+        if let availableReactions = availableReactions {
+            for availableReaction in availableReactions.reactions {
+                if availableReaction.value == reaction {
+                    file = availableReaction.staticIcon._parse()
+                    animationFile = availableReaction.centerAnimation?._parse()
+                    break
+                }
+            }
+        }
+        if let animationFile = animationFile {
+            self.size = animationFile.dimensions?.cgSize ?? displayPixelSize
+            var displaySize = self.size.aspectFitted(displayPixelSize)
+            displaySize.width = floor(displaySize.width * 2.0)
+            displaySize.height = floor(displaySize.height * 2.0)
+            self.isAnimation = true
+            
+            super.init()
+            
+            self.disposable = (reactionStaticImage(context: context, animation: animationFile, pixelSize: CGSize(width: displaySize.width * UIScreenScale, height: displaySize.height * UIScreenScale), queue: sharedReactionStaticImage)
+            |> deliverOnMainQueue).start(next: { [weak self] data in
+                guard let strongSelf = self else {
+                    return
+                }
+                
+                if data.isComplete, let dataValue = try? Data(contentsOf: URL(fileURLWithPath: data.path)) {
+                    if let image = UIImage(data: dataValue) {
+                        strongSelf.iconNode.image = image
+                    }
+                }
+            }).strict()
+        } else if let file = file {
+            self.size = file.dimensions?.cgSize ?? displayPixelSize
+            self.isAnimation = false
+            
+            super.init()
+            
+            self.disposable = (context.account.postbox.mediaBox.resourceData(file.resource)
+            |> deliverOnMainQueue).start(next: { [weak self] data in
+                guard let strongSelf = self else {
+                    return
+                }
+                
+                if data.complete, let dataValue = try? Data(contentsOf: URL(fileURLWithPath: data.path)) {
+                    if let image = WebP.convert(fromWebP: dataValue) {
+                        strongSelf.iconNode.image = image
+                    }
+                }
+            }).strict()
+        } else {
+            self.size = displayPixelSize
+            self.isAnimation = false
+            super.init()
+        }
+        
+        self.addSubnode(self.iconNode)
+    }
+    
+    deinit {
+        self.disposable?.dispose()
+    }
+    
+    public func update(size: CGSize) {
+        var imageSize = self.size.aspectFitted(size)
+        if self.isAnimation {
+            imageSize.width *= 2.0
+            imageSize.height *= 2.0
+        }
+        self.iconNode.frame = CGRect(origin: CGPoint(x: floor((size.width - imageSize.width) / 2.0), y: floor((size.height - imageSize.height) / 2.0)), size: imageSize)
+    }
+}

submodules/Components/ReactionListContextMenuContent/BUILD

@@ -0,0 +1,34 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "ReactionListContextMenuContent",
+    module_name = "ReactionListContextMenuContent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/Display:Display",
+        "//submodules/ComponentFlow:ComponentFlow",
+        "//submodules/SSignalKit/SwiftSignalKit:SwiftSignalKit",
+        "//submodules/Postbox:Postbox",
+        "//submodules/TelegramCore:TelegramCore",
+        "//submodules/AccountContext:AccountContext",
+        "//submodules/TelegramPresentationData:TelegramPresentationData",
+        "//submodules/WebPBinding:WebPBinding",
+        "//submodules/AnimatedAvatarSetNode:AnimatedAvatarSetNode",
+        "//submodules/ContextUI:ContextUI",
+        "//submodules/AvatarNode:AvatarNode",
+        "//submodules/Components/ReactionImageComponent:ReactionImageComponent",
+        "//submodules/TelegramUI/Components/AnimationCache:AnimationCache",
+        "//submodules/TelegramUI/Components/MultiAnimationRenderer:MultiAnimationRenderer",
+        "//submodules/TelegramUI/Components/EmojiTextAttachmentView:EmojiTextAttachmentView",
+        "//submodules/TelegramUI/Components/EmojiStatusComponent:EmojiStatusComponent",
+        "//submodules/TextFormat:TextFormat",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/SheetComponent/BUILD

@@ -0,0 +1,22 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "SheetComponent",
+    module_name = "SheetComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/Display:Display",
+        "//submodules/ComponentFlow:ComponentFlow",
+        "//submodules/Components/ViewControllerComponent:ViewControllerComponent",
+        "//submodules/SSignalKit/SwiftSignalKit:SwiftSignalKit",
+        "//submodules/TelegramUI/Components/DynamicCornerRadiusView",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/SheetComponent/Sources/SheetComponent.swift

@@ -0,0 +1,605 @@
+import Foundation
+import UIKit
+import Display
+import ComponentFlow
+import ViewControllerComponent
+import SwiftSignalKit
+import DynamicCornerRadiusView
+
+public final class SheetComponentEnvironment: Equatable {
+    public let isDisplaying: Bool
+    public let isCentered: Bool
+    public let hasInputHeight: Bool
+    public let regularMetricsSize: CGSize?
+    public let dismiss: (Bool) -> Void
+    
+    public init(isDisplaying: Bool, isCentered: Bool, hasInputHeight: Bool, regularMetricsSize: CGSize?, dismiss: @escaping (Bool) -> Void) {
+        self.isDisplaying = isDisplaying
+        self.isCentered = isCentered
+        self.hasInputHeight = hasInputHeight
+        self.regularMetricsSize = regularMetricsSize
+        self.dismiss = dismiss
+    }
+    
+    public static func ==(lhs: SheetComponentEnvironment, rhs: SheetComponentEnvironment) -> Bool {
+        if lhs.isDisplaying != rhs.isDisplaying {
+            return false
+        }
+        if lhs.isCentered != rhs.isCentered {
+            return false
+        }
+        if lhs.hasInputHeight != rhs.hasInputHeight {
+            return false
+        }
+        if lhs.regularMetricsSize != rhs.regularMetricsSize {
+            return false
+        }
+        return true
+    }
+}
+
+public let sheetComponentTag = GenericComponentViewTag()
+public final class SheetComponent<ChildEnvironmentType: Sendable & Equatable>: Component {
+    public typealias EnvironmentType = (ChildEnvironmentType, SheetComponentEnvironment)
+    
+    public class ExternalState {
+        public fileprivate(set) var contentHeight: CGFloat
+        
+        public init() {
+            self.contentHeight = 0.0
+        }
+    }
+    
+    public enum BackgroundColor: Equatable {
+        public enum BlurStyle: Equatable {
+            case light
+            case dark
+        }
+        
+        case color(UIColor)
+        case blur(BlurStyle)
+    }
+    
+    public enum Style: Equatable {
+        case glass
+        case legacy
+    }
+    
+    public let content: AnyComponent<ChildEnvironmentType>
+    public let headerContent: AnyComponent<Empty>?
+    public let style: Style
+    public let backgroundColor: BackgroundColor
+    public let followContentSizeChanges: Bool
+    public let clipsContent: Bool
+    public let isScrollEnabled: Bool
+    public let hasDimView: Bool
+    public let autoAnimateOut: Bool
+    public let externalState: ExternalState?
+    public let animateOut: ActionSlot<Action<()>>
+    public let onPan: () -> Void
+    public let willDismiss: () -> Void
+    
+    public init(
+        content: AnyComponent<ChildEnvironmentType>,
+        headerContent: AnyComponent<Empty>? = nil,
+        style: Style = .legacy,
+        backgroundColor: BackgroundColor,
+        followContentSizeChanges: Bool = false,
+        clipsContent: Bool = false,
+        isScrollEnabled: Bool = true,
+        hasDimView: Bool = true,
+        autoAnimateOut: Bool = true,
+        externalState: ExternalState? = nil,
+        animateOut: ActionSlot<Action<()>>,
+        onPan: @escaping () -> Void = {},
+        willDismiss: @escaping () -> Void = {}
+    ) {
+        self.content = content
+        self.headerContent = headerContent
+        self.style = style
+        self.backgroundColor = backgroundColor
+        self.followContentSizeChanges = followContentSizeChanges
+        self.clipsContent = clipsContent
+        self.isScrollEnabled = isScrollEnabled
+        self.hasDimView = hasDimView
+        self.autoAnimateOut = autoAnimateOut
+        self.externalState = externalState
+        self.animateOut = animateOut
+        self.onPan = onPan
+        self.willDismiss = willDismiss
+    }
+    
+    public static func ==(lhs: SheetComponent, rhs: SheetComponent) -> Bool {
+        if lhs.content != rhs.content {
+            return false
+        }
+        if lhs.headerContent != rhs.headerContent {
+            return false
+        }
+        if lhs.style != rhs.style {
+            return false
+        }
+        if lhs.backgroundColor != rhs.backgroundColor {
+            return false
+        }
+        if lhs.followContentSizeChanges != rhs.followContentSizeChanges {
+            return false
+        }
+        if lhs.isScrollEnabled != rhs.isScrollEnabled {
+            return false
+        }
+        if lhs.hasDimView != rhs.hasDimView {
+            return false
+        }
+        if lhs.autoAnimateOut != rhs.autoAnimateOut {
+            return false
+        }
+        if lhs.animateOut != rhs.animateOut {
+            return false
+        }
+        return true
+    }
+    
+    private class ScrollView: UIScrollView {
+        var ignoreScroll = false
+        override func setContentOffset(_ contentOffset: CGPoint, animated: Bool) {
+            guard !self.ignoreScroll else {
+                return
+            }
+            if animated && abs(contentOffset.y - self.contentOffset.y) > 200.0 {
+                return
+            }
+            super.setContentOffset(contentOffset, animated: animated)
+        }
+        
+        override func touchesShouldCancel(in view: UIView) -> Bool {
+            return true
+        }
+    }
+    
+    public final class View: UIView, UIScrollViewDelegate, ComponentTaggedView {
+        public final class Tag {
+            public init() {
+            }
+        }
+        
+        public func matches(tag: Any) -> Bool {
+            if let _ = tag as? Tag {
+                return true
+            }
+            return false
+        }
+        
+        private var component: SheetComponent<ChildEnvironmentType>?
+        
+        private let dimView: UIView
+        private let scrollView: ScrollView
+        private let backgroundView: SheetBackgroundView
+        private var effectView: UIVisualEffectView?
+        private let clipView: SheetBackgroundView
+        private let contentView: ComponentView<ChildEnvironmentType>
+        private var headerView: ComponentView<Empty>?
+        
+        private var isAnimatingOut: Bool = false
+        private var previousIsDisplaying: Bool = false
+        private var dismiss: ((Bool) -> Void)?
+        
+        private var keyboardWillShowObserver: AnyObject?
+        
+        override init(frame: CGRect) {
+            self.dimView = UIView()
+            self.dimView.backgroundColor = UIColor(white: 0.0, alpha: 0.4)
+            
+            self.scrollView = ScrollView()
+            self.scrollView.delaysContentTouches = false
+            if #available(iOSApplicationExtension 11.0, iOS 11.0, *) {
+                self.scrollView.contentInsetAdjustmentBehavior = .never
+            }
+            self.scrollView.showsVerticalScrollIndicator = false
+            self.scrollView.showsHorizontalScrollIndicator = false
+            self.scrollView.alwaysBounceVertical = true
+            
+            self.backgroundView = SheetBackgroundView()
+            self.clipView = SheetBackgroundView()
+            
+            self.contentView = ComponentView<ChildEnvironmentType>()
+            
+            super.init(frame: frame)
+            
+            self.scrollView.delegate = self
+            
+            self.addSubview(self.dimView)
+            self.scrollView.addSubview(self.backgroundView)
+            self.addSubview(self.scrollView)
+            
+            self.dimView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(self.dimViewTapGesture(_:))))
+                        
+            self.keyboardWillShowObserver = NotificationCenter.default.addObserver(forName: UIResponder.keyboardWillShowNotification, object: nil, queue: nil, using: { [weak self] _ in
+                if let strongSelf = self {
+                    strongSelf.scrollView.ignoreScroll = true
+                    Queue.mainQueue().after(0.1, {
+                        strongSelf.scrollView.ignoreScroll = false
+                    })
+                }
+            })
+        }
+                                                                                              
+        required init?(coder: NSCoder) {
+            fatalError("init(coder:) has not been implemented")
+        }
+        
+        deinit {
+            if let keyboardFrameChangeObserver = self.keyboardWillShowObserver {
+                NotificationCenter.default.removeObserver(keyboardFrameChangeObserver)
+            }
+        }
+        
+        @objc private func dimViewTapGesture(_ recognizer: UITapGestureRecognizer) {
+            if case .ended = recognizer.state {
+                self.dismiss?(true)
+            }
+        }
+        
+        public func dismissAnimated() {
+            self.dismiss?(true)
+        }
+        
+        public func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {
+            self.component?.onPan()
+        }
+        
+        private var scrollingOut = false
+        public func scrollViewWillEndDragging(_ scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) {
+            let contentOffset = (scrollView.contentOffset.y + scrollView.contentInset.top - scrollView.contentSize.height) * -1.0
+            let dismissalOffset = scrollView.contentSize.height - scrollView.contentInset.top  + scrollView.contentSize.height
+            let delta = dismissalOffset - contentOffset
+            
+            let initialVelocity = !delta.isZero ? velocity.y / delta : 0.0
+            
+            let currentContentOffset = scrollView.contentOffset
+            targetContentOffset.pointee = currentContentOffset
+            if velocity.y > 300.0 {
+                self.component?.willDismiss()
+                self.animateOut(initialVelocity: initialVelocity, completion: {
+                    self.dismiss?(false)
+                })
+            } else {
+                if contentOffset < scrollView.contentSize.height * 0.1 {
+                    if contentOffset < 0.0 {
+                        
+                    } else {
+                        scrollView.setContentOffset(CGPoint(x: 0.0, y: scrollView.contentSize.height - scrollView.contentInset.top), animated: true)
+                    }
+                } else {
+                    self.component?.willDismiss()
+                    self.animateOut(initialVelocity: initialVelocity, completion: {
+                        self.dismiss?(false)
+                    })
+                }
+            }
+        }
+               
+        private var ignoreScrolling: Bool = false
+        public func scrollViewDidScroll(_ scrollView: UIScrollView) {
+            guard !self.ignoreScrolling else {
+                return
+            }
+            let contentOffset = (scrollView.contentOffset.y + scrollView.contentInset.top - scrollView.contentSize.height) * -1.0
+            if contentOffset >= scrollView.contentSize.height {
+                self.dismiss?(false)
+            }
+        }
+        
+        override public func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
+            if let headerView = self.headerView?.view, headerView.bounds.contains(self.convert(point, to: headerView)) {
+                return super.hitTest(point, with: event)
+            }
+            if !self.backgroundView.bounds.contains(self.convert(point, to: self.backgroundView)) {
+                return self.dimView
+            }
+            return super.hitTest(point, with: event)
+        }
+        
+        private func animateIn() {
+            self.dimView.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.3)
+            
+            let transition = ContainedViewLayoutTransition.animated(duration: 0.4, curve: .spring)
+            let targetPosition = self.scrollView.center
+            var offset: CGFloat = self.scrollView.contentSize.height
+            if self.isCentered {
+                offset = self.frame.height + self.scrollView.frame.height * 0.5
+            }
+            self.scrollView.center = targetPosition.offsetBy(dx: 0.0, dy: offset)
+            transition.animateView(allowUserInteraction: true, {
+                self.scrollView.center = targetPosition
+            })
+            
+            if let headerContent = self.headerView {
+                headerContent.view?.layer.animateAlpha(from: 0.1, to: 0.0, duration: 0.15)
+            }
+        }
+        
+        private func animateOut(initialVelocity: CGFloat? = nil, completion: @escaping () -> Void) {
+            if self.isAnimatingOut {
+                completion()
+                return
+            }
+            self.isAnimatingOut = true
+            
+            self.isUserInteractionEnabled = false
+            self.dimView.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.3, removeOnCompletion: false)
+            
+            if let headerContent = self.headerView {
+                headerContent.view?.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.15, removeOnCompletion: false)
+            }
+            
+            guard let contentView = self.contentView.view else {
+                return
+            }
+            if let initialVelocity = initialVelocity {
+                let transition = ContainedViewLayoutTransition.animated(duration: 0.35, curve: .customSpring(damping: 124.0, initialVelocity: initialVelocity))
+                
+                let contentOffset = (self.scrollView.contentOffset.y + self.scrollView.contentInset.top - self.scrollView.contentSize.height) * -1.0
+                let dismissalOffset = self.scrollView.contentSize.height + abs(contentView.frame.minY)
+                let delta = dismissalOffset - contentOffset
+                var targetPosition = self.scrollView.center.y + delta
+                if self.isCentered {
+                    targetPosition = self.frame.height + self.scrollView.frame.height * 0.5
+                }
+                
+                transition.updatePosition(layer: self.scrollView.layer, position: CGPoint(x: self.scrollView.center.x, y: targetPosition), completion: { _ in
+                    completion()
+                })
+            } else {
+                var targetOffset: CGFloat = self.scrollView.contentSize.height + abs(contentView.frame.minY)
+                if self.isCentered {
+                    targetOffset = self.frame.height + self.scrollView.frame.height * 0.5
+                }
+                self.scrollView.layer.animatePosition(from: CGPoint(), to: CGPoint(x: 0.0, y: targetOffset), duration: 0.25, timingFunction: CAMediaTimingFunctionName.easeInEaseOut.rawValue, removeOnCompletion: false, additive: true, completion: { _ in
+                    completion()
+                })
+            }
+        }
+        
+        private var currentHasInputHeight = false
+        private var isCentered = false
+        private var currentAvailableSize: CGSize?
+        func update(component: SheetComponent<ChildEnvironmentType>, availableSize: CGSize, state: EmptyComponentState, environment: Environment<EnvironmentType>, transition: ComponentTransition) -> CGSize {
+            let previousHasInputHeight = self.currentHasInputHeight
+            let sheetEnvironment = environment[SheetComponentEnvironment.self].value
+            component.animateOut.connect { [weak self] completion in
+                guard let strongSelf = self else {
+                    return
+                }
+                strongSelf.animateOut {
+                    completion(Void())
+                }
+            }
+            
+            self.component = component
+            self.isCentered = sheetEnvironment.isCentered
+            self.currentHasInputHeight = sheetEnvironment.hasInputHeight
+            
+            if self.isAnimatingOut {
+                return availableSize
+            }
+            
+            var glassInset: CGFloat = 0.0
+            var topCornerRadius: CGFloat
+            var bottomCornerRadius: CGFloat
+            switch component.style {
+            case .glass:
+                topCornerRadius = 38.0
+                bottomCornerRadius = 56.0
+                if availableSize.width < availableSize.height {
+                    glassInset = 6.0
+                }
+            case .legacy:
+                topCornerRadius = 12.0
+                bottomCornerRadius = 12.0
+            }
+            
+            var backgroundColor: UIColor = .clear
+            switch component.backgroundColor {
+            case let .blur(style):
+                self.backgroundView.isHidden = true
+                if self.effectView == nil {
+                    let effectView = UIVisualEffectView(effect: UIBlurEffect(style: style == .dark ? .dark : .light))
+                    effectView.layer.cornerRadius = self.backgroundView.layer.cornerRadius
+                    effectView.layer.masksToBounds = true
+                    self.backgroundView.superview?.insertSubview(effectView, aboveSubview: self.backgroundView)
+                    self.effectView = effectView
+                }
+            case let .color(color):
+                backgroundColor = color
+                self.backgroundView.isHidden = false
+                self.effectView?.removeFromSuperview()
+                self.effectView = nil
+            }
+                        
+            transition.setFrame(view: self.dimView, frame: CGRect(origin: CGPoint(), size: availableSize), completion: nil)
+            
+            var containerSize: CGSize
+            if sheetEnvironment.isCentered {
+                let verticalInset: CGFloat = 44.0
+                let maxSide = max(availableSize.width, availableSize.height)
+                let minSide = min(availableSize.width, availableSize.height)
+                containerSize = CGSize(width: min(availableSize.width - 20.0, floor(maxSide / 2.0)), height: min(availableSize.height, minSide) - verticalInset * 2.0)
+                if let regularMetricsSize = sheetEnvironment.regularMetricsSize {
+                    containerSize = regularMetricsSize
+                }
+            } else {
+                containerSize = CGSize(width: availableSize.width - glassInset * 2.0, height: .greatestFiniteMagnitude)
+            }
+            
+            self.contentView.parentState = state
+            let contentSize = self.contentView.update(
+                transition: transition,
+                component: component.content,
+                environment: {
+                    environment[ChildEnvironmentType.self]
+                },
+                containerSize: containerSize
+            )
+            component.externalState?.contentHeight = contentSize.height
+            
+            self.ignoreScrolling = true
+            if let contentView = self.contentView.view {
+                if contentView.superview == nil {
+                    self.scrollView.addSubview(self.clipView)
+                    self.clipView.bottomCornersView.addSubview(contentView)
+                }
+                contentView.clipsToBounds = component.clipsContent
+                contentView.layer.cornerRadius = topCornerRadius
+                
+                if sheetEnvironment.isCentered {
+                    let y: CGFloat = floorToScreenPixels((availableSize.height - contentSize.height) / 2.0)
+                    
+                    let clipFrame = CGRect(origin: CGPoint(x: floorToScreenPixels((availableSize.width - contentSize.width) / 2.0), y: -y), size: contentSize)
+                    self.clipView.update(size: clipFrame.size, color: .clear, topCornerRadius: topCornerRadius, bottomCornerRadius: topCornerRadius, transition: transition)
+                    transition.setFrame(view: self.clipView, frame: clipFrame, completion: nil)
+                    transition.setFrame(view: contentView, frame: CGRect(origin: .zero, size: clipFrame.size), completion: nil)
+                    transition.setFrame(view: self.backgroundView, frame: CGRect(origin: CGPoint(x: floorToScreenPixels((availableSize.width - contentSize.width) / 2.0), y: -y), size: contentSize), completion: nil)
+                    if let effectView = self.effectView {
+                        transition.setFrame(view: effectView, frame: CGRect(origin: CGPoint(x: floorToScreenPixels((availableSize.width - contentSize.width) / 2.0), y: -y), size: contentSize), completion: nil)
+                    }
+                    self.backgroundView.update(size: contentSize, color: backgroundColor, topCornerRadius: topCornerRadius, bottomCornerRadius: topCornerRadius, transition: transition)
+                } else {
+                    switch component.style {
+                    case .glass:
+                        let clipFrame = CGRect(origin: CGPoint(x: glassInset, y: -glassInset), size: CGSize(width: contentSize.width, height: contentSize.height))
+                        self.clipView.update(size: clipFrame.size, color: .clear, topCornerRadius: topCornerRadius, bottomCornerRadius: bottomCornerRadius, transition: transition)
+                        transition.setFrame(view: self.clipView, frame: clipFrame)
+                        transition.setFrame(view: contentView, frame: CGRect(origin: .zero, size: CGSize(width: contentSize.width, height: contentSize.height)), completion: nil)
+                        transition.setFrame(view: self.backgroundView, frame: CGRect(origin: CGPoint(x: glassInset, y: -glassInset), size: CGSize(width: contentSize.width, height: contentSize.height)), completion: nil)
+                    case .legacy:
+                        let clipFrame = CGRect(origin: .zero, size: CGSize(width: contentSize.width, height: contentSize.height + 100.0))
+                        self.clipView.update(size: clipFrame.size, color: .clear, topCornerRadius: topCornerRadius, bottomCornerRadius: bottomCornerRadius, transition: transition)
+                        transition.setFrame(view: self.clipView, frame: clipFrame)
+                        transition.setFrame(view: contentView, frame: CGRect(origin: .zero, size: clipFrame.size), completion: nil)
+                        transition.setFrame(view: self.backgroundView, frame: CGRect(origin: .zero, size: CGSize(width: contentSize.width, height: contentSize.height + 1000.0)), completion: nil)
+                        if let effectView = self.effectView {
+                            transition.setFrame(view: effectView, frame: CGRect(origin: .zero, size: CGSize(width: contentSize.width, height: contentSize.height + 1000.0)), completion: nil)
+                        }
+                    }
+                    self.backgroundView.update(size: contentSize, color: backgroundColor, topCornerRadius: topCornerRadius, bottomCornerRadius: bottomCornerRadius, transition: transition)
+                }
+            }
+            transition.setFrame(view: self.scrollView, frame: CGRect(origin: CGPoint(), size: availableSize), completion: nil)
+            
+            if let headerContent = component.headerContent {
+                let headerView: ComponentView<Empty>
+                if let current = self.headerView {
+                    headerView = current
+                } else {
+                    headerView = ComponentView()
+                    self.headerView = headerView
+                }
+                
+                let headerSize = headerView.update(
+                    transition: transition,
+                    component: headerContent,
+                    environment: {},
+                    containerSize: CGSize(width: contentSize.width, height: 44.0)
+                )
+                let headerFrame = CGRect(origin: CGPoint(x: floorToScreenPixels((availableSize.width - headerSize.width) / 2.0), y: self.backgroundView.frame.minY - headerSize.height - 10.0), size: headerSize)
+                if let headerView = headerView.view {
+                    if headerView.superview == nil {
+                        self.scrollView.addSubview(headerView)
+                    }
+                    transition.setFrame(view: headerView, frame: headerFrame)
+                }
+            } else if let headerView = self.headerView {
+                self.headerView = nil
+                headerView.view?.removeFromSuperview()
+            }
+            
+            let previousContentSize = self.scrollView.contentSize
+            let updateContentSize = {
+                self.scrollView.contentSize = contentSize
+                self.scrollView.contentInset = UIEdgeInsets(top: max(0.0, availableSize.height - contentSize.height) + contentSize.height, left: 0.0, bottom: 0.0, right: 0.0)
+            }
+            if previousContentSize.height.isZero {
+                updateContentSize()
+            }
+            
+            self.scrollView.isScrollEnabled = component.isScrollEnabled
+            
+            self.ignoreScrolling = false
+            if let currentAvailableSize = self.currentAvailableSize, currentAvailableSize.height != availableSize.height {
+                self.scrollView.contentOffset = CGPoint(x: 0.0, y: -(availableSize.height - contentSize.height))
+            } else if component.followContentSizeChanges, !previousContentSize.height.isZero, previousContentSize != contentSize {
+                transition.setBounds(view: self.scrollView, bounds: CGRect(origin: CGPoint(x: 0.0, y: -(availableSize.height - contentSize.height)), size: availableSize), completion: { _ in
+                    updateContentSize()
+                })
+            }
+            if self.currentHasInputHeight != previousHasInputHeight {
+                transition.setBounds(view: self.scrollView, bounds: CGRect(origin: CGPoint(x: 0.0, y: -(availableSize.height - contentSize.height)), size: self.scrollView.bounds.size))
+            }
+            
+            self.currentAvailableSize = availableSize
+            
+            if !component.hasDimView {
+                self.dimView.backgroundColor = .clear
+            }
+            
+            if environment[SheetComponentEnvironment.self].value.isDisplaying, !self.previousIsDisplaying, let _ = transition.userData(ViewControllerComponentContainer.AnimateInTransition.self) {
+                self.animateIn()
+            } else if !environment[SheetComponentEnvironment.self].value.isDisplaying, self.previousIsDisplaying, let _ = transition.userData(ViewControllerComponentContainer.AnimateOutTransition.self) {
+                if component.autoAnimateOut {
+                    self.animateOut(completion: {})
+                }
+            }
+            if !sheetEnvironment.isDisplaying && !component.autoAnimateOut {
+                
+            } else {
+                self.previousIsDisplaying = sheetEnvironment.isDisplaying
+            }
+            self.dismiss = sheetEnvironment.dismiss
+            
+            return availableSize
+        }
+    }
+    
+    public func makeView() -> View {
+        return View(frame: CGRect())
+    }
+    
+    public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<EnvironmentType>, transition: ComponentTransition) -> CGSize {
+        return view.update(component: self, availableSize: availableSize, state: state, environment: environment, transition: transition)
+    }
+}
+
+public final class SheetBackgroundView: UIView {
+    let topCornersView = UIView()
+    let bottomCornersView = UIView()
+    
+    public override init(frame: CGRect) {
+        super.init(frame: frame)
+        
+        self.topCornersView.clipsToBounds = true
+        self.topCornersView.layer.cornerCurve = .continuous
+        self.topCornersView.layer.maskedCorners = [.layerMinXMinYCorner, .layerMaxXMinYCorner]
+        
+        self.bottomCornersView.clipsToBounds = true
+        self.bottomCornersView.layer.cornerCurve = .continuous
+        self.bottomCornersView.layer.maskedCorners = [.layerMinXMaxYCorner, .layerMaxXMaxYCorner]
+        
+        self.addSubview(self.topCornersView)
+        self.topCornersView.addSubview(self.bottomCornersView)
+    }
+    
+    required init?(coder: NSCoder) {
+        preconditionFailure()
+    }
+    
+    public func update(size: CGSize, color: UIColor, topCornerRadius: CGFloat, bottomCornerRadius: CGFloat, transition: ComponentTransition) {
+        transition.setCornerRadius(layer: self.topCornersView.layer, cornerRadius: topCornerRadius)
+        transition.setCornerRadius(layer: self.bottomCornersView.layer, cornerRadius: bottomCornerRadius)
+        
+        transition.setFrame(view: self.topCornersView, frame: CGRect(origin: .zero, size: size))
+        transition.setFrame(view: self.bottomCornersView, frame: CGRect(origin: .zero, size: size))
+        
+        transition.setBackgroundColor(view: self.bottomCornersView, color: color)
+    }
+}

submodules/Components/SolidRoundedButtonComponent/BUILD

@@ -0,0 +1,20 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "SolidRoundedButtonComponent",
+    module_name = "SolidRoundedButtonComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/Display:Display",
+        "//submodules/ComponentFlow:ComponentFlow",
+        "//submodules/SolidRoundedButtonNode:SolidRoundedButtonNode",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/SolidRoundedButtonComponent/Sources/SolidRoundedButtonComponent.swift

@@ -0,0 +1,201 @@
+import Foundation
+import UIKit
+import ComponentFlow
+import Display
+import SolidRoundedButtonNode
+import AppBundle
+
+public final class SolidRoundedButtonComponent: Component {
+    public typealias Theme = SolidRoundedButtonTheme
+    
+    public let title: String?
+    public let subtitle: String?
+    public let label: String?
+    public let badge: String?
+    public let icon: UIImage?
+    public let theme: SolidRoundedButtonTheme
+    public let font: SolidRoundedButtonFont
+    public let fontSize: CGFloat
+    public let height: CGFloat
+    public let cornerRadius: CGFloat
+    public let gloss: Bool
+    public let glass: Bool
+    public let isEnabled: Bool
+    public let iconName: String?
+    public let animationName: String?
+    public let iconPosition: SolidRoundedButtonIconPosition
+    public let iconSpacing: CGFloat
+    public let isLoading: Bool
+    public let action: () -> Void
+    
+    public init(
+        title: String? = nil,
+        subtitle: String? = nil,
+        label: String? = nil,
+        badge: String? = nil,
+        icon: UIImage? = nil,
+        theme: SolidRoundedButtonTheme,
+        font: SolidRoundedButtonFont = .bold,
+        fontSize: CGFloat = 17.0,
+        height: CGFloat = 48.0,
+        cornerRadius: CGFloat = 24.0,
+        gloss: Bool = false,
+        glass: Bool = false,
+        isEnabled: Bool = true,
+        iconName: String? = nil,
+        animationName: String? = nil,
+        iconPosition: SolidRoundedButtonIconPosition = .left,
+        iconSpacing: CGFloat = 8.0,
+        isLoading: Bool = false,
+        action: @escaping () -> Void
+    ) {
+        self.title = title
+        self.subtitle = subtitle
+        self.label = label
+        self.badge = badge
+        self.icon = icon
+        self.theme = theme
+        self.font = font
+        self.fontSize = fontSize
+        self.height = height
+        self.cornerRadius = cornerRadius
+        self.gloss = gloss
+        self.glass = glass
+        self.isEnabled = isEnabled
+        self.iconName = iconName
+        self.animationName = animationName
+        self.iconPosition = iconPosition
+        self.iconSpacing = iconSpacing
+        self.isLoading = isLoading
+        self.action = action
+    }
+    
+    public static func ==(lhs: SolidRoundedButtonComponent, rhs: SolidRoundedButtonComponent) -> Bool {
+        if lhs.title != rhs.title {
+            return false
+        }
+        if lhs.subtitle != rhs.subtitle {
+            return false
+        }
+        if lhs.label != rhs.label {
+            return false
+        }
+        if lhs.badge != rhs.badge {
+            return false
+        }
+        if lhs.icon !== rhs.icon {
+            return false
+        }
+        if lhs.theme != rhs.theme {
+            return false
+        }
+        if lhs.font != rhs.font {
+            return false
+        }
+        if lhs.fontSize != rhs.fontSize {
+            return false
+        }
+        if lhs.height != rhs.height {
+            return false
+        }
+        if lhs.cornerRadius != rhs.cornerRadius {
+            return false
+        }
+        if lhs.gloss != rhs.gloss {
+            return false
+        }
+        if lhs.glass != rhs.glass {
+            return false
+        }
+        if lhs.isEnabled != rhs.isEnabled {
+            return false
+        }
+        if lhs.iconName != rhs.iconName {
+            return false
+        }
+        if lhs.animationName != rhs.animationName {
+            return false
+        }
+        if lhs.iconPosition != rhs.iconPosition {
+            return false
+        }
+        if lhs.iconSpacing != rhs.iconSpacing {
+            return false
+        }
+        if lhs.isLoading != rhs.isLoading {
+            return false
+        }
+        return true
+    }
+    
+    public final class View: UIView {
+        private var component: SolidRoundedButtonComponent?
+        private var button: SolidRoundedButtonView?
+        
+        private var currentIsLoading = false
+        
+        public func update(component: SolidRoundedButtonComponent, availableSize: CGSize, transition: ComponentTransition) -> CGSize {
+            if self.button == nil {
+                let button = SolidRoundedButtonView(
+                    title: component.title,
+                    label: component.label,
+                    badge: component.badge,
+                    icon: component.icon,
+                    theme: component.theme,
+                    font: component.font,
+                    fontSize: component.fontSize,
+                    height: component.height,
+                    cornerRadius: component.cornerRadius,
+                    gloss: component.gloss
+                )
+                button.progressType = .embedded
+                self.button = button
+                self.addSubview(button)
+                
+                button.pressed = { [weak self] in
+                    self?.component?.action()
+                }
+            }
+            
+            if let button = self.button {
+                button.title = component.title
+                button.subtitle = component.subtitle
+                button.label = component.label
+                button.badge = component.badge
+                button.iconPosition = component.iconPosition
+                button.iconSpacing = component.iconSpacing
+                button.icon = component.iconName.flatMap { UIImage(bundleImageName: $0) }
+                button.animation = component.animationName
+                button.gloss = component.gloss
+                
+                button.isEnabled = component.isEnabled
+                button.isUserInteractionEnabled = component.isEnabled
+                
+                button.updateTheme(component.theme)
+                let height = button.updateLayout(width: availableSize.width, transition: .immediate)
+                transition.setFrame(view: button, frame: CGRect(origin: CGPoint(), size: CGSize(width: availableSize.width, height: height)), completion: nil)
+                
+                if self.currentIsLoading != component.isLoading {
+                    self.currentIsLoading = component.isLoading
+                    if component.isLoading {
+                        button.transitionToProgress()
+                    } else {
+                        button.transitionFromProgress()
+                    }
+                }
+            }
+            
+            self.component = component
+            
+            return availableSize
+        }
+    }
+    
+    public func makeView() -> View {
+        return View()
+    }
+    
+    public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+        return view.update(component: self, availableSize: availableSize, transition: transition)
+    }
+}

submodules/Components/UndoPanelComponent/BUILD

@@ -0,0 +1,18 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "UndoPanelComponent",
+    module_name = "UndoPanelComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/ComponentFlow:ComponentFlow",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/UndoPanelComponent/Sources/UndoPanelComponent.swift

@@ -0,0 +1,67 @@
+import Foundation
+import UIKit
+import ComponentFlow
+
+public final class UndoPanelComponent: Component {
+    public let icon: AnyComponent<Empty>?
+    public let content: AnyComponent<Empty>
+    public let action: AnyComponent<Empty>?
+
+    public init(
+        icon: AnyComponent<Empty>?,
+        content: AnyComponent<Empty>,
+        action: AnyComponent<Empty>?
+    ) {
+        self.icon = icon
+        self.content = content
+        self.action = action
+    }
+
+    public static func ==(lhs: UndoPanelComponent, rhs: UndoPanelComponent) -> Bool {
+        if lhs.icon != rhs.icon {
+            return false
+        }
+        if lhs.content !== rhs.content {
+            return false
+        }
+        if lhs.action != rhs.action {
+            return false
+        }
+        
+        return true
+    }
+    
+    public final class View: UIVisualEffectView {
+        private var iconView: ComponentHostView<Empty>?
+        private let centralContentView: ComponentHostView<Empty>
+        private var actionView: ComponentHostView<Empty>?
+        
+        init() {
+            self.centralContentView = ComponentHostView()
+            
+            super.init(effect: nil)
+            
+            self.addSubview(self.contentView)
+        }
+        
+        required init?(coder: NSCoder) {
+            fatalError("init(coder:) has not been implemented")
+        }
+        
+        public func update(component: UndoPanelComponent, availableSize: CGSize, transition: ComponentTransition) -> CGSize {
+            self.effect = UIBlurEffect(style: .dark)
+            
+            self.layer.cornerRadius = 10.0
+            
+            return CGSize(width: availableSize.width, height: 50.0)
+        }
+    }
+    
+    public func makeView() -> View {
+        return View()
+    }
+    
+    public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+        return view.update(component: self, availableSize: availableSize, transition: transition)
+    }
+}

submodules/Components/UndoPanelComponent/Sources/UndoPanelContainerComponent.swift

@@ -0,0 +1,83 @@
+import Foundation
+import UIKit
+import ComponentFlow
+
+public final class UndoPanelContainerComponent: Component {
+    let push: ActionSlot<UndoPanelComponent>
+    
+    public init(push: ActionSlot<UndoPanelComponent>) {
+        self.push = push
+    }
+
+    public static func ==(lhs: UndoPanelContainerComponent, rhs: UndoPanelContainerComponent) -> Bool {
+        if lhs.push != rhs.push {
+            return false
+        }
+        return true
+    }
+    
+    public final class View: UIView {
+        private var topPanel: UndoPanelComponent?
+        private var topPanelView: ComponentHostView<Empty>?
+        
+        private var nextPanel: UndoPanelComponent?
+        
+        public func update(component: UndoPanelContainerComponent, availableSize: CGSize, state: EmptyComponentState, transition: ComponentTransition) -> CGSize {
+            component.push.connect { [weak self, weak state] panel in
+                guard let strongSelf = self, let state = state else {
+                    return
+                }
+                
+                strongSelf.nextPanel = panel
+                state.updated(transition: ComponentTransition(animation: .curve(duration: 0.4, curve: .spring)))
+            }
+            
+            var animateTopPanelIn = false
+            var topPanelTransition = transition
+            if let nextPanel = self.nextPanel {
+                self.nextPanel = nil
+                self.topPanel = nextPanel
+                
+                if let topPanelView = self.topPanelView {
+                    self.topPanelView = nil
+                    
+                    transition.withAnimationIfAnimated(.curve(duration: 0.3, curve: .easeInOut)).setAlpha(view: topPanelView, alpha: 0.0, completion: { [weak topPanelView] _ in
+                        topPanelView?.removeFromSuperview()
+                    })
+                }
+                
+                let topPanelView = ComponentHostView<Empty>()
+                self.topPanelView = topPanelView
+                self.addSubview(topPanelView)
+                
+                topPanelTransition = topPanelTransition.withAnimation(.none)
+                animateTopPanelIn = true
+            }
+            
+            if let topPanel = self.topPanel, let topPanelView = self.topPanelView {
+                let topPanelSize = topPanelView.update(
+                    transition: topPanelTransition,
+                    component: AnyComponent(topPanel),
+                    environment: {},
+                    containerSize: availableSize
+                )
+                
+                if animateTopPanelIn {
+                    let _ = transition.withAnimationIfAnimated(.curve(duration: 0.3, curve: .easeInOut))
+                }
+                
+                return CGSize(width: availableSize.width, height: topPanelSize.height)
+            }
+            
+            return CGSize(width: availableSize.width, height: 0.0)
+        }
+    }
+    
+    public func makeView() -> View {
+        return View()
+    }
+    
+    public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+        return view.update(component: self, availableSize: availableSize, state: state, transition: transition)
+    }
+}

submodules/Components/ViewControllerComponent/BUILD

@@ -0,0 +1,23 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "ViewControllerComponent",
+    module_name = "ViewControllerComponent",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    copts = [
+        "-warnings-as-errors",
+    ],
+    deps = [
+        "//submodules/Display:Display",
+        "//submodules/ComponentFlow:ComponentFlow",
+        "//submodules/SSignalKit/SwiftSignalKit:SwiftSignalKit",
+        "//submodules/AccountContext:AccountContext",
+        "//submodules/TelegramPresentationData:TelegramPresentationData",
+        "//submodules/Components/ComponentDisplayAdapters:ComponentDisplayAdapters",
+    ],
+    visibility = [
+        "//visibility:public",
+    ],
+)

submodules/Components/ViewControllerComponent/Sources/ViewControllerComponent.swift

@@ -0,0 +1,454 @@
+import Foundation
+import UIKit
+import ComponentFlow
+import Display
+import SwiftSignalKit
+import TelegramPresentationData
+import AccountContext
+import ComponentDisplayAdapters
+
+private func resolveTheme(baseTheme: PresentationTheme, theme: ViewControllerComponentContainer.Theme) -> PresentationTheme {
+    switch theme {
+    case .default:
+        return baseTheme
+    case let .custom(value):
+        return value
+    case .dark:
+        return customizeDefaultDarkPresentationTheme(theme: defaultDarkPresentationTheme, editing: false, title: nil, accentColor: baseTheme.list.itemAccentColor, backgroundColors: [], bubbleColors: [], animateBubbleColors: false, wallpaper: nil, baseColor: nil)
+    }
+}
+
+open class ViewControllerComponentContainer: ViewController {
+    public enum NavigationBarAppearance {
+        case none
+        case transparent
+        case `default`
+    }
+    
+    public enum StatusBarStyle {
+        case none
+        case ignore
+        case `default`
+    }
+    
+    public enum PresentationMode {
+        case `default`
+        case modal
+    }
+    
+    public enum Theme {
+        case `default`
+        case dark
+        case custom(PresentationTheme)
+    }
+    
+    public enum Style {
+        case glass
+        case legacy
+    }
+    
+    public final class Environment: Equatable {
+        public let statusBarHeight: CGFloat
+        public let navigationHeight: CGFloat
+        public let safeInsets: UIEdgeInsets
+        public let additionalInsets: UIEdgeInsets
+        public let inputHeight: CGFloat
+        public let metrics: LayoutMetrics
+        public let deviceMetrics: DeviceMetrics
+        public let orientation: UIInterfaceOrientation?
+        public let isVisible: Bool
+        public let theme: PresentationTheme
+        public let strings: PresentationStrings
+        public let dateTimeFormat: PresentationDateTimeFormat
+        public let controller: () -> ViewController?
+        
+        public init(
+            statusBarHeight: CGFloat,
+            navigationHeight: CGFloat,
+            safeInsets: UIEdgeInsets,
+            additionalInsets: UIEdgeInsets,
+            inputHeight: CGFloat,
+            metrics: LayoutMetrics,
+            deviceMetrics: DeviceMetrics,
+            orientation: UIInterfaceOrientation?,
+            isVisible: Bool,
+            theme: PresentationTheme,
+            strings: PresentationStrings,
+            dateTimeFormat: PresentationDateTimeFormat,
+            controller: @escaping () -> ViewController?
+        ) {
+            self.statusBarHeight = statusBarHeight
+            self.navigationHeight = navigationHeight
+            self.safeInsets = safeInsets
+            self.additionalInsets = additionalInsets
+            self.inputHeight = inputHeight
+            self.metrics = metrics
+            self.deviceMetrics = deviceMetrics
+            self.orientation = orientation
+            self.isVisible = isVisible
+            self.theme = theme
+            self.strings = strings
+            self.dateTimeFormat = dateTimeFormat
+            self.controller = controller
+        }
+        
+        public static func ==(lhs: Environment, rhs: Environment) -> Bool {
+            if lhs === rhs {
+                return true
+            }
+            
+            if lhs.statusBarHeight != rhs.statusBarHeight {
+                return false
+            }
+            if lhs.navigationHeight != rhs.navigationHeight {
+                return false
+            }
+            if lhs.safeInsets != rhs.safeInsets {
+                return false
+            }
+            if lhs.additionalInsets != rhs.additionalInsets {
+                return false
+            }
+            if lhs.inputHeight != rhs.inputHeight {
+                return false
+            }
+            if lhs.metrics != rhs.metrics {
+                return false
+            }
+            if lhs.deviceMetrics != rhs.deviceMetrics {
+                return false
+            }
+            if lhs.orientation != rhs.orientation {
+                return false
+            }
+            if lhs.isVisible != rhs.isVisible {
+                return false
+            }
+            if lhs.theme !== rhs.theme {
+                return false
+            }
+            if lhs.strings !== rhs.strings {
+                return false
+            }
+            if lhs.dateTimeFormat != rhs.dateTimeFormat {
+                return false
+            }
+            
+            return true
+        }
+    }
+    
+    public final class AnimateInTransition {
+        public init() {
+        }
+    }
+    
+    public final class AnimateOutTransition {
+        public init() {
+        }
+    }
+    
+    public final class Node: ViewControllerTracingNode {
+        fileprivate var presentationData: PresentationData
+        private weak var controller: ViewControllerComponentContainer?
+        
+        private var component: AnyComponent<ViewControllerComponentContainer.Environment>
+        let theme: Theme
+        var resolvedTheme: PresentationTheme
+        public let hostView: ComponentHostView<ViewControllerComponentContainer.Environment>
+        
+        private var currentIsVisible: Bool = false
+        private var currentLayout: (layout: ContainerViewLayout, navigationHeight: CGFloat)?
+        
+        init(presentationData: PresentationData, controller: ViewControllerComponentContainer, component: AnyComponent<ViewControllerComponentContainer.Environment>, theme: Theme) {
+            self.presentationData = presentationData
+            
+            self.controller = controller
+            
+            self.component = component
+            self.theme = theme
+            self.resolvedTheme = resolveTheme(baseTheme: self.presentationData.theme, theme: theme)
+            self.hostView = ComponentHostView()
+            
+            super.init()
+            
+            self.view.addSubview(self.hostView)
+        }
+        
+        func containerLayoutUpdated(layout: ContainerViewLayout, navigationHeight: CGFloat, transition: ComponentTransition) {
+            self.currentLayout = (layout, navigationHeight)
+            
+            let environment = ViewControllerComponentContainer.Environment(
+                statusBarHeight: layout.statusBarHeight ?? 0.0,
+                navigationHeight: navigationHeight,
+                safeInsets: UIEdgeInsets(top: layout.intrinsicInsets.top + layout.safeInsets.top, left: layout.safeInsets.left, bottom: layout.intrinsicInsets.bottom + layout.safeInsets.bottom, right: layout.safeInsets.right),
+                additionalInsets: layout.additionalInsets,
+                inputHeight: layout.inputHeight ?? 0.0,
+                metrics: layout.metrics,
+                deviceMetrics: layout.deviceMetrics,
+                orientation: layout.metrics.orientation,
+                isVisible: self.currentIsVisible,
+                theme: self.resolvedTheme,
+                strings: self.presentationData.strings,
+                dateTimeFormat: self.presentationData.dateTimeFormat,
+                controller: { [weak self] in
+                    return self?.controller
+                }
+            )
+            let _ = self.hostView.update(
+                transition: transition,
+                component: self.component,
+                environment: {
+                    environment
+                },
+                forceUpdate: self.controller?.forceNextUpdate ?? false,
+                containerSize: layout.size
+            )
+            transition.setFrame(view: self.hostView, frame: CGRect(origin: CGPoint(), size: layout.size), completion: nil)
+        }
+        
+        func updateIsVisible(isVisible: Bool, animated: Bool) {
+            if self.currentIsVisible == isVisible {
+                return
+            }
+            self.currentIsVisible = isVisible
+            
+            guard let currentLayout = self.currentLayout else {
+                return
+            }
+            self.containerLayoutUpdated(layout: currentLayout.layout, navigationHeight: currentLayout.navigationHeight, transition: animated ? ComponentTransition(animation: .none).withUserData(isVisible ? AnimateInTransition() : AnimateOutTransition()) : .immediate)
+        }
+        
+        func updateComponent(component: AnyComponent<ViewControllerComponentContainer.Environment>, transition: ComponentTransition) {
+            self.component = component
+            
+            guard let currentLayout = self.currentLayout else {
+                return
+            }
+            self.containerLayoutUpdated(layout: currentLayout.layout, navigationHeight: currentLayout.navigationHeight, transition: transition)
+        }
+        
+        override public func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
+            if let result = super.hitTest(point, with: event) {
+                if result === self.view {
+                    return nil
+                }
+                return result
+            }
+            return nil
+        }
+    }
+    
+    public var node: Node {
+        return self.displayNode as! Node
+    }
+    
+    private var presentationData: PresentationData
+    private var theme: Theme
+    public private(set) var component: AnyComponent<ViewControllerComponentContainer.Environment>
+    
+    private var presentationDataDisposable: Disposable?
+    public private(set) var validLayout: ContainerViewLayout?
+    
+    public var wasDismissed: (() -> Void)?
+    public var customProceed: (() -> Void)?
+    
+    public init<C: Component>(
+        context: AccountContext,
+        component: C,
+        navigationBarAppearance: NavigationBarAppearance,
+        statusBarStyle: StatusBarStyle = .default,
+        presentationMode: PresentationMode = .default,
+        theme: Theme = .default,
+        updatedPresentationData: (initial: PresentationData, signal: Signal<PresentationData, NoError>)? = nil
+    ) where C.EnvironmentType == ViewControllerComponentContainer.Environment {
+        self.component = AnyComponent(component)
+        self.theme = theme
+        
+        var effectiveUpdatedPresentationData: (initial: PresentationData, signal: Signal<PresentationData, NoError>)
+        if let updatedPresentationData {
+            effectiveUpdatedPresentationData = updatedPresentationData
+        } else {
+            effectiveUpdatedPresentationData = (initial: context.sharedContext.currentPresentationData.with { $0 }, signal: context.sharedContext.presentationData)
+        }
+        
+        let presentationData = effectiveUpdatedPresentationData.initial
+        self.presentationData = presentationData
+        
+        let navigationBarPresentationData: NavigationBarPresentationData?
+        switch navigationBarAppearance {
+        case .none:
+            navigationBarPresentationData = nil
+        case .transparent:
+            navigationBarPresentationData = NavigationBarPresentationData(presentationData: presentationData, hideBackground: true, hideBadge: false, hideSeparator: true)
+        case .default:
+            navigationBarPresentationData = NavigationBarPresentationData(presentationData: presentationData)
+        }
+        super.init(navigationBarPresentationData: navigationBarPresentationData)
+        
+        self.setupPresentationData(effectiveUpdatedPresentationData, navigationBarAppearance: navigationBarAppearance, statusBarStyle: statusBarStyle, presentationMode: presentationMode)
+    }
+    
+    public init<C: Component>(
+        component: C,
+        navigationBarAppearance: NavigationBarAppearance,
+        statusBarStyle: StatusBarStyle = .default,
+        presentationMode: PresentationMode = .default,
+        theme: Theme = .default,
+        updatedPresentationData: (initial: PresentationData, signal: Signal<PresentationData, NoError>)
+    ) where C.EnvironmentType == ViewControllerComponentContainer.Environment {
+        self.component = AnyComponent(component)
+        self.theme = theme
+        
+        let presentationData = updatedPresentationData.initial
+        self.presentationData = presentationData
+        
+        let navigationBarPresentationData: NavigationBarPresentationData?
+        switch navigationBarAppearance {
+        case .none:
+            navigationBarPresentationData = nil
+        case .transparent:
+            navigationBarPresentationData = NavigationBarPresentationData(presentationData: presentationData, hideBackground: true, hideBadge: false, hideSeparator: true)
+        case .default:
+            navigationBarPresentationData = NavigationBarPresentationData(presentationData: presentationData)
+        }
+        super.init(navigationBarPresentationData: navigationBarPresentationData)
+        
+        self.setupPresentationData(updatedPresentationData, navigationBarAppearance: navigationBarAppearance, statusBarStyle: statusBarStyle, presentationMode: presentationMode)
+    }
+    
+    required public init(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    deinit {
+        self.presentationDataDisposable?.dispose()
+    }
+    
+    private func setupPresentationData(_ updatedPresentationData: (initial: PresentationData, signal: Signal<PresentationData, NoError>), navigationBarAppearance: NavigationBarAppearance, statusBarStyle: StatusBarStyle, presentationMode: PresentationMode) {
+        self.presentationDataDisposable = (updatedPresentationData.signal
+        |> deliverOnMainQueue).start(next: { [weak self] presentationData in
+            if let strongSelf = self {
+                var theme = presentationData.theme
+                
+                var resolvedTheme = resolveTheme(baseTheme: presentationData.theme, theme: strongSelf.theme)
+                if case .modal = presentationMode {
+                    theme = theme.withModalBlocksBackground()
+                    resolvedTheme = resolvedTheme.withModalBlocksBackground()
+                }
+                
+                let presentationData = presentationData.withUpdated(theme: theme)
+
+                strongSelf.node.presentationData = presentationData
+                strongSelf.node.resolvedTheme = resolvedTheme
+                
+                switch statusBarStyle {
+                    case .none:
+                        strongSelf.statusBar.statusBarStyle = .Hide
+                    case .ignore:
+                        strongSelf.statusBar.statusBarStyle = .Ignore
+                    case .default:
+                        strongSelf.statusBar.statusBarStyle = resolvedTheme.rootController.statusBarStyle.style
+                }
+                
+                let navigationBarPresentationData: NavigationBarPresentationData?
+                switch navigationBarAppearance {
+                case .none:
+                    navigationBarPresentationData = nil
+                case .transparent:
+                    navigationBarPresentationData = NavigationBarPresentationData(presentationData: presentationData, hideBackground: true, hideBadge: false, hideSeparator: true)
+                case .default:
+                    navigationBarPresentationData = NavigationBarPresentationData(presentationData: presentationData)
+                }
+                if let navigationBarPresentationData {
+                    strongSelf.navigationBar?.updatePresentationData(navigationBarPresentationData)
+                }
+                
+                if let layout = strongSelf.validLayout {
+                    strongSelf.containerLayoutUpdated(layout, transition: ContainedViewLayoutTransition.immediate)
+                }
+            }
+        }).strict()
+        
+        let resolvedTheme = resolveTheme(baseTheme: presentationData.theme, theme: self.theme)
+        switch statusBarStyle {
+            case .none:
+                self.statusBar.statusBarStyle = .Hide
+            case .ignore:
+                self.statusBar.statusBarStyle = .Ignore
+            case .default:
+                self.statusBar.statusBarStyle = resolvedTheme.rootController.statusBarStyle.style
+        }
+    }
+    
+    override open func loadDisplayNode() {
+        self.displayNode = Node(presentationData: self.presentationData, controller: self, component: self.component, theme: self.theme)
+        
+        self.displayNodeDidLoad()
+    }
+    
+    private var didDismiss = false
+    open override func viewWillDisappear(_ animated: Bool) {
+        super.viewWillDisappear(animated)
+        if !self.didDismiss {
+            self.didDismiss = true
+            self.wasDismissed?()
+        }
+    }
+    
+    override open func viewDidAppear(_ animated: Bool) {
+        super.viewDidAppear(animated)
+        
+        self.node.updateIsVisible(isVisible: true, animated: true)
+    }
+    
+    override open func viewDidDisappear(_ animated: Bool) {
+        super.viewDidDisappear(animated)
+        
+        self.node.updateIsVisible(isVisible: false, animated: animated)
+    }
+    
+    open override func dismiss(animated flag: Bool, completion: (() -> Void)? = nil) {
+        super.dismiss(animated: flag, completion: {
+            completion?()
+        })
+    }
+    
+    fileprivate var forceNextUpdate = false
+    public func requestLayout(forceUpdate: Bool, transition: ContainedViewLayoutTransition) {
+        self.forceNextUpdate = forceUpdate
+        self.requestLayout(transition: transition)
+        self.forceNextUpdate = false
+    }
+    
+    public func requestLayout(forceUpdate: Bool, transition: ComponentTransition) {
+        self.forceNextUpdate = forceUpdate
+        if self.isViewLoaded, let validLayout = self.validLayout {
+            self.containerLayoutUpdated(validLayout, transition: transition)
+        }
+        self.forceNextUpdate = false
+    }
+    
+    override open func containerLayoutUpdated(_ layout: ContainerViewLayout, transition: ContainedViewLayoutTransition) {
+        super.containerLayoutUpdated(layout, transition: transition)
+        
+        let navigationHeight = self.navigationLayout(layout: layout).navigationFrame.maxY
+        
+        self.validLayout = layout
+        self.node.containerLayoutUpdated(layout: layout, navigationHeight: navigationHeight, transition: ComponentTransition(transition))
+    }
+    
+    public func containerLayoutUpdated(_ layout: ContainerViewLayout, transition: ComponentTransition) {
+        super.containerLayoutUpdated(layout, transition: transition.containedViewLayoutTransition)
+        
+        let navigationHeight = self.navigationLayout(layout: layout).navigationFrame.maxY
+        
+        self.validLayout = layout
+        self.node.containerLayoutUpdated(layout: layout, navigationHeight: navigationHeight, transition: transition)
+    }
+    
+    public func updateComponent(component: AnyComponent<ViewControllerComponentContainer.Environment>, transition: ComponentTransition) {
+        self.component = component
+        self.node.updateComponent(component: component, transition: transition)
+    }
+}