Merge commit '7621e2f8dec938cf48181c8b10afc9b01f444e68' into beta

submodules/TelegramUI/Components/ChatFolderLinkPreviewScreen/Sources/PeerListItemComponent.swift

@@ -0,0 +1,312 @@
+import Foundation
+import UIKit
+import Display
+import AsyncDisplayKit
+import ComponentFlow
+import SwiftSignalKit
+import AccountContext
+import TelegramCore
+import MultilineTextComponent
+import AvatarNode
+import TelegramPresentationData
+import CheckNode
+import TelegramStringFormatting
+
+private let avatarFont = avatarPlaceholderFont(size: 15.0)
+
+final class PeerListItemComponent: Component {
+    enum SelectionState: Equatable {
+        case none
+        case editing(isSelected: Bool, isTinted: Bool)
+    }
+    
+    let context: AccountContext
+    let theme: PresentationTheme
+    let strings: PresentationStrings
+    let sideInset: CGFloat
+    let title: String
+    let peer: EnginePeer?
+    let subtitle: String?
+    let selectionState: SelectionState
+    let hasNext: Bool
+    let action: (EnginePeer) -> Void
+    
+    init(
+        context: AccountContext,
+        theme: PresentationTheme,
+        strings: PresentationStrings,
+        sideInset: CGFloat,
+        title: String,
+        peer: EnginePeer?,
+        subtitle: String?,
+        selectionState: SelectionState,
+        hasNext: Bool,
+        action: @escaping (EnginePeer) -> Void
+    ) {
+        self.context = context
+        self.theme = theme
+        self.strings = strings
+        self.sideInset = sideInset
+        self.title = title
+        self.peer = peer
+        self.subtitle = subtitle
+        self.selectionState = selectionState
+        self.hasNext = hasNext
+        self.action = action
+    }
+    
+    static func ==(lhs: PeerListItemComponent, rhs: PeerListItemComponent) -> Bool {
+        if lhs.context !== rhs.context {
+            return false
+        }
+        if lhs.theme !== rhs.theme {
+            return false
+        }
+        if lhs.strings !== rhs.strings {
+            return false
+        }
+        if lhs.sideInset != rhs.sideInset {
+            return false
+        }
+        if lhs.title != rhs.title {
+            return false
+        }
+        if lhs.peer != rhs.peer {
+            return false
+        }
+        if lhs.subtitle != rhs.subtitle {
+            return false
+        }
+        if lhs.selectionState != rhs.selectionState {
+            return false
+        }
+        if lhs.hasNext != rhs.hasNext {
+            return false
+        }
+        return true
+    }
+    
+    final class View: UIView {
+        private let containerButton: HighlightTrackingButton
+        
+        private let title = ComponentView<Empty>()
+        private let label = ComponentView<Empty>()
+        private let separatorLayer: SimpleLayer
+        private let avatarNode: AvatarNode
+        
+        private var checkLayer: CheckLayer?
+        
+        private var component: PeerListItemComponent?
+        private weak var state: EmptyComponentState?
+        
+        override init(frame: CGRect) {
+            self.separatorLayer = SimpleLayer()
+            
+            self.containerButton = HighlightTrackingButton()
+            
+            self.avatarNode = AvatarNode(font: avatarFont)
+            self.avatarNode.isLayerBacked = true
+            
+            super.init(frame: frame)
+            
+            self.layer.addSublayer(self.separatorLayer)
+            self.addSubview(self.containerButton)
+            self.containerButton.layer.addSublayer(self.avatarNode.layer)
+            
+            self.containerButton.addTarget(self, action: #selector(self.pressed), for: .touchUpInside)
+        }
+        
+        required init?(coder: NSCoder) {
+            fatalError("init(coder:) has not been implemented")
+        }
+        
+        @objc private func pressed() {
+            guard let component = self.component, let peer = component.peer else {
+                return
+            }
+            component.action(peer)
+        }
+        
+        func update(component: PeerListItemComponent, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+            let themeUpdated = self.component?.theme !== component.theme
+            
+            var hasSelectionUpdated = false
+            if let previousComponent = self.component {
+                switch previousComponent.selectionState {
+                case .none:
+                    if case .none = component.selectionState {
+                    } else {
+                        hasSelectionUpdated = true
+                    }
+                case .editing:
+                    if case .editing = component.selectionState {
+                    } else {
+                        hasSelectionUpdated = true
+                    }
+                }
+            }
+            
+            self.component = component
+            self.state = state
+            
+            let contextInset: CGFloat = 0.0
+            
+            let height: CGFloat = 60.0
+            let verticalInset: CGFloat = 1.0
+            var leftInset: CGFloat = 62.0 + component.sideInset
+            let rightInset: CGFloat = contextInset * 2.0 + 8.0 + component.sideInset
+            var avatarLeftInset: CGFloat = component.sideInset + 10.0
+            
+            if case let .editing(isSelected, isTinted) = component.selectionState {
+                leftInset += 44.0
+                avatarLeftInset += 44.0
+                let checkSize: CGFloat = 22.0
+                
+                let checkLayer: CheckLayer
+                if let current = self.checkLayer {
+                    checkLayer = current
+                    if themeUpdated {
+                        var theme = CheckNodeTheme(theme: component.theme, style: .plain)
+                        if isTinted {
+                            theme.backgroundColor = theme.backgroundColor.mixedWith(component.theme.list.itemBlocksBackgroundColor, alpha: 0.5)
+                        }
+                        checkLayer.theme = theme
+                    }
+                    checkLayer.setSelected(isSelected, animated: !transition.animation.isImmediate)
+                } else {
+                    var theme = CheckNodeTheme(theme: component.theme, style: .plain)
+                    if isTinted {
+                        theme.backgroundColor = theme.backgroundColor.mixedWith(component.theme.list.itemBlocksBackgroundColor, alpha: 0.5)
+                    }
+                    checkLayer = CheckLayer(theme: theme)
+                    self.checkLayer = checkLayer
+                    self.containerButton.layer.addSublayer(checkLayer)
+                    checkLayer.frame = CGRect(origin: CGPoint(x: -checkSize, y: floor((height - verticalInset * 2.0 - checkSize) / 2.0)), size: CGSize(width: checkSize, height: checkSize))
+                    checkLayer.setSelected(isSelected, animated: false)
+                    checkLayer.setNeedsDisplay()
+                }
+                transition.setFrame(layer: checkLayer, frame: CGRect(origin: CGPoint(x: floor((54.0 - checkSize) * 0.5), y: floor((height - verticalInset * 2.0 - checkSize) / 2.0)), size: CGSize(width: checkSize, height: checkSize)))
+            } else {
+                if let checkLayer = self.checkLayer {
+                    self.checkLayer = nil
+                    transition.setPosition(layer: checkLayer, position: CGPoint(x: -checkLayer.bounds.width * 0.5, y: checkLayer.position.y), completion: { [weak checkLayer] _ in
+                        checkLayer?.removeFromSuperlayer()
+                    })
+                }
+            }
+            
+            let avatarSize: CGFloat = 40.0
+            
+            let avatarFrame = CGRect(origin: CGPoint(x: avatarLeftInset, y: floor((height - verticalInset * 2.0 - avatarSize) / 2.0)), size: CGSize(width: avatarSize, height: avatarSize))
+            if self.avatarNode.bounds.isEmpty {
+                self.avatarNode.frame = avatarFrame
+            } else {
+                transition.setFrame(layer: self.avatarNode.layer, frame: avatarFrame)
+            }
+            if let peer = component.peer {
+                let clipStyle: AvatarNodeClipStyle
+                if case let .channel(channel) = peer, channel.isForumOrMonoForum {
+                    clipStyle = .roundedRect
+                } else {
+                    clipStyle = .round
+                }
+                if peer.id == component.context.account.peerId {
+                    self.avatarNode.setPeer(context: component.context, theme: component.theme, peer: peer, overrideImage: .savedMessagesIcon, clipStyle: clipStyle, displayDimensions: CGSize(width: avatarSize, height: avatarSize))
+                } else {
+                    self.avatarNode.setPeer(context: component.context, theme: component.theme, peer: peer, clipStyle: clipStyle, displayDimensions: CGSize(width: avatarSize, height: avatarSize))
+                }
+            }
+            
+            let labelData: (String, Bool)
+            if let subtitle = component.subtitle {
+                labelData = (subtitle, false)
+            } else if case .legacyGroup = component.peer {
+                labelData = (component.strings.Group_Status, false)
+            } else if case let .channel(channel) = component.peer {
+                if case .group = channel.info {
+                    labelData = (component.strings.Group_Status, false)
+                } else {
+                    labelData = (component.strings.Channel_Status, false)
+                }
+            } else {
+                labelData = (component.strings.Group_Status, false)
+            }
+            
+            let labelSize = self.label.update(
+                transition: .immediate,
+                component: AnyComponent(MultilineTextComponent(
+                    text: .plain(NSAttributedString(string: labelData.0, font: Font.regular(15.0), textColor: labelData.1 ? component.theme.list.itemAccentColor : component.theme.list.itemSecondaryTextColor))
+                )),
+                environment: {},
+                containerSize: CGSize(width: availableSize.width - leftInset - rightInset, height: 100.0)
+            )
+            
+            let previousTitleFrame = self.title.view?.frame
+            var previousTitleContents: UIView?
+            if hasSelectionUpdated && !"".isEmpty {
+                previousTitleContents = self.title.view?.snapshotView(afterScreenUpdates: false)
+            }
+            
+            let titleSize = self.title.update(
+                transition: .immediate,
+                component: AnyComponent(MultilineTextComponent(
+                    text: .plain(NSAttributedString(string: component.title, font: Font.semibold(17.0), textColor: component.theme.list.itemPrimaryTextColor))
+                )),
+                environment: {},
+                containerSize: CGSize(width: availableSize.width - leftInset - rightInset, height: 100.0)
+            )
+            
+            let titleSpacing: CGFloat = 1.0
+            let centralContentHeight: CGFloat = titleSize.height + labelSize.height + titleSpacing
+            
+            let titleFrame = CGRect(origin: CGPoint(x: leftInset, y: floor((height - verticalInset * 2.0 - centralContentHeight) / 2.0)), size: titleSize)
+            if let titleView = self.title.view {
+                if titleView.superview == nil {
+                    titleView.isUserInteractionEnabled = false
+                    self.containerButton.addSubview(titleView)
+                }
+                titleView.frame = titleFrame
+                if let previousTitleFrame, previousTitleFrame.origin.x != titleFrame.origin.x {
+                    transition.animatePosition(view: titleView, from: CGPoint(x: previousTitleFrame.origin.x - titleFrame.origin.x, y: 0.0), to: CGPoint(), additive: true)
+                }
+                
+                if let previousTitleFrame, let previousTitleContents, previousTitleFrame.size != titleSize {
+                    previousTitleContents.frame = CGRect(origin: previousTitleFrame.origin, size: previousTitleFrame.size)
+                    self.addSubview(previousTitleContents)
+                    
+                    transition.setFrame(view: previousTitleContents, frame: CGRect(origin: titleFrame.origin, size: previousTitleFrame.size))
+                    transition.setAlpha(view: previousTitleContents, alpha: 0.0, completion: { [weak previousTitleContents] _ in
+                        previousTitleContents?.removeFromSuperview()
+                    })
+                    transition.animateAlpha(view: titleView, from: 0.0, to: 1.0)
+                }
+            }
+            if let labelView = self.label.view {
+                if labelView.superview == nil {
+                    labelView.isUserInteractionEnabled = false
+                    self.containerButton.addSubview(labelView)
+                }
+                transition.setFrame(view: labelView, frame: CGRect(origin: CGPoint(x: titleFrame.minX, y: titleFrame.maxY + titleSpacing), size: labelSize))
+            }
+            
+            if themeUpdated {
+                self.separatorLayer.backgroundColor = component.theme.list.itemPlainSeparatorColor.cgColor
+            }
+            transition.setFrame(layer: self.separatorLayer, frame: CGRect(origin: CGPoint(x: leftInset, y: height), size: CGSize(width: availableSize.width - leftInset, height: UIScreenPixel)))
+            self.separatorLayer.isHidden = !component.hasNext
+            
+            let containerFrame = CGRect(origin: CGPoint(x: contextInset, y: verticalInset), size: CGSize(width: availableSize.width - contextInset * 2.0, height: height - verticalInset * 2.0))
+            transition.setFrame(view: self.containerButton, frame: containerFrame)
+            
+            return CGSize(width: availableSize.width, height: height)
+        }
+    }
+    
+    func makeView() -> View {
+        return View(frame: CGRect())
+    }
+    
+    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)
+    }
+}