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271
TelegramUI/InstantPagePeerReferenceNode.swift
Normal file
271
TelegramUI/InstantPagePeerReferenceNode.swift
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import Foundation
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import TelegramCore
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import Postbox
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import SwiftSignalKit
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import AsyncDisplayKit
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import Display
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private enum JoinState: Equatable {
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case none
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case notJoined
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case inProgress
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case joined(justNow: Bool)
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static func ==(lhs: JoinState, rhs: JoinState) -> Bool {
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switch lhs {
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case .none:
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if case .none = rhs {
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return true
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} else {
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return false
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}
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case .notJoined:
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if case .notJoined = rhs {
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return true
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} else {
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return false
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}
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case .inProgress:
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if case .inProgress = rhs {
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return true
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} else {
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return false
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}
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case let .joined(justNow):
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if case .joined(justNow) = rhs {
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return true
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} else {
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return false
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}
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}
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}
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}
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final class InstantPagePeerReferenceNode: ASDisplayNode, InstantPageNode {
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private let account: Account
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let initialPeer: Peer
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private let rtl: Bool
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private var strings: PresentationStrings
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private var theme: InstantPageTheme
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private let openPeer: (PeerId) -> Void
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private let highlightedBackgroundNode: ASDisplayNode
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private let buttonNode: HighlightableButtonNode
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private let nameNode: ASTextNode
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private let joinNode: HighlightableButtonNode
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private let activityIndicator: ActivityIndicator
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private let checkNode: ASImageNode
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private var peer: Peer?
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private var peerDisposable: Disposable?
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private let joinDisposable = MetaDisposable()
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private var joinState: JoinState = .none
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init(account: Account, strings: PresentationStrings, theme: InstantPageTheme, initialPeer: Peer, rtl: Bool, openPeer: @escaping (PeerId) -> Void) {
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self.account = account
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self.strings = strings
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self.theme = theme
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self.initialPeer = initialPeer
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self.rtl = rtl
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self.openPeer = openPeer
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self.highlightedBackgroundNode = ASDisplayNode()
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self.highlightedBackgroundNode.isLayerBacked = true
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self.highlightedBackgroundNode.backgroundColor = theme.panelHighlightedBackgroundColor
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self.highlightedBackgroundNode.alpha = 0.0
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self.buttonNode = HighlightableButtonNode()
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self.nameNode = ASTextNode()
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self.nameNode.isLayerBacked = true
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self.nameNode.maximumNumberOfLines = 1
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self.joinNode = HighlightableButtonNode()
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self.joinNode.hitTestSlop = UIEdgeInsets(top: -17.0, left: -17.0, bottom: -17.0, right: -17.0)
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self.activityIndicator = ActivityIndicator(type: .custom(theme.panelAccentColor))
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self.checkNode = ASImageNode()
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self.checkNode.isLayerBacked = true
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self.checkNode.displayWithoutProcessing = true
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self.checkNode.displaysAsynchronously = false
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self.checkNode.isHidden = true
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super.init()
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self.backgroundColor = theme.panelBackgroundColor
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self.addSubnode(self.highlightedBackgroundNode)
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self.addSubnode(self.buttonNode)
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self.addSubnode(self.joinNode)
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self.addSubnode(self.checkNode)
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self.addSubnode(self.nameNode)
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self.buttonNode.highligthedChanged = { [weak self] highlighted in
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if let strongSelf = self {
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if highlighted {
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strongSelf.highlightedBackgroundNode.layer.removeAnimation(forKey: "opacity")
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strongSelf.highlightedBackgroundNode.alpha = 1.0
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} else {
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strongSelf.highlightedBackgroundNode.alpha = 0.0
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strongSelf.highlightedBackgroundNode.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.2)
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}
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}
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}
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self.joinNode.highligthedChanged = { [weak self] highlighted in
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if let strongSelf = self {
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if highlighted {
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strongSelf.joinNode.layer.removeAnimation(forKey: "opacity")
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strongSelf.joinNode.alpha = 0.4
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} else {
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strongSelf.joinNode.alpha = 1.0
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strongSelf.joinNode.layer.animateAlpha(from: 0.4, to: 1.0, duration: 0.2)
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}
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}
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}
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self.buttonNode.addTarget(self, action: #selector(self.buttonPressed), forControlEvents: .touchUpInside)
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self.joinNode.addTarget(self, action: #selector(self.joinPressed), forControlEvents: .touchUpInside)
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self.peerDisposable = (actualizedPeer(postbox: self.account.postbox, network: self.account.network, peer: self.initialPeer) |> deliverOnMainQueue).start(next: { [weak self] peer in
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if let strongSelf = self {
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strongSelf.nameNode.attributedText = NSAttributedString(string: peer.displayTitle, font: Font.medium(17.0), textColor: strongSelf.theme.panelPrimaryColor)
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if let peer = peer as? TelegramChannel {
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var joinState = strongSelf.joinState
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if case .member = peer.participationStatus {
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switch joinState {
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case .none:
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joinState = .joined(justNow: false)
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case .inProgress, .notJoined:
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joinState = .joined(justNow: true)
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case .joined:
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break
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}
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} else {
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joinState = .notJoined
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}
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strongSelf.updateJoinState(joinState)
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}
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strongSelf.setNeedsLayout()
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}
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})
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self.applyThemeAndStrings(themeUpdated: true)
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}
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deinit {
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self.peerDisposable?.dispose()
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self.joinDisposable.dispose()
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}
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func update(strings: PresentationStrings, theme: InstantPageTheme) {
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if self.strings !== strings || self.theme !== theme {
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let themeUpdated = self.theme !== theme
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self.strings = strings
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self.theme = theme
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self.applyThemeAndStrings(themeUpdated: themeUpdated)
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}
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}
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private func applyThemeAndStrings(themeUpdated: Bool) {
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if let peer = self.peer {
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self.nameNode.attributedText = NSAttributedString(string: peer.displayTitle, font: Font.medium(17.0), textColor: self.theme.panelPrimaryColor)
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}
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self.joinNode.setAttributedTitle(NSAttributedString(string: self.strings.Channel_JoinChannel, font: Font.medium(17.0), textColor: self.theme.panelAccentColor), for: [])
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if themeUpdated {
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self.checkNode.image = generateTintedImage(image: UIImage(bundleImageName: "Instant View/PanelCheck"), color: self.theme.panelSecondaryColor)
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self.activityIndicator.type = .custom(self.theme.panelAccentColor)
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}
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self.setNeedsLayout()
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}
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private func updateJoinState(_ joinState: JoinState) {
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if self.joinState != joinState {
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self.joinState = joinState
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switch joinState {
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case .none:
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self.joinNode.isHidden = true
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self.checkNode.isHidden = true
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if self.activityIndicator.supernode != nil {
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self.activityIndicator.removeFromSupernode()
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}
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case .notJoined:
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self.joinNode.isHidden = false
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self.checkNode.isHidden = true
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if self.activityIndicator.supernode != nil {
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self.activityIndicator.removeFromSupernode()
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}
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case .inProgress:
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self.joinNode.isHidden = true
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self.checkNode.isHidden = true
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if self.activityIndicator.supernode == nil {
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self.addSubnode(self.activityIndicator)
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}
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case let .joined(justNow):
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self.joinNode.isHidden = true
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self.checkNode.isHidden = !justNow
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if self.activityIndicator.supernode != nil {
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self.activityIndicator.removeFromSupernode()
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}
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}
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}
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}
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override func layout() {
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super.layout()
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let size = self.bounds.size
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let inset: CGFloat = 17.0
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self.highlightedBackgroundNode.frame = CGRect(origin: CGPoint(), size: size)
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self.buttonNode.frame = CGRect(origin: CGPoint(), size: size)
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let joinSize = self.joinNode.measure(size)
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let nameSize = self.nameNode.measure(CGSize(width: size.width - inset * 2.0 - joinSize.width, height: size.height))
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let checkSize = self.checkNode.measure(size)
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let indicatorSize = self.activityIndicator.measure(size)
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if self.rtl {
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self.nameNode.frame = CGRect(origin: CGPoint(x: size.width - 17.0 - nameSize.width, y: floor((size.height - nameSize.height) / 2.0)), size: nameSize)
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self.joinNode.frame = CGRect(origin: CGPoint(x: 17.0, y: floor((size.height - joinSize.height) / 2.0)), size: joinSize)
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self.checkNode.frame = CGRect(origin: CGPoint(x: 17.0, y: floor((size.height - checkSize.height) / 2.0)), size: checkSize)
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self.activityIndicator.frame = CGRect(origin: CGPoint(x: 17.0, y: floor((size.height - indicatorSize.height) / 2.0)), size: indicatorSize)
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} else {
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self.nameNode.frame = CGRect(origin: CGPoint(x: 17.0, y: floor((size.height - nameSize.height) / 2.0)), size: nameSize)
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self.joinNode.frame = CGRect(origin: CGPoint(x: size.width - 17.0 - joinSize.width, y: floor((size.height - joinSize.height) / 2.0)), size: joinSize)
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self.checkNode.frame = CGRect(origin: CGPoint(x: size.width - 17.0 - checkSize.width, y: floor((size.height - checkSize.height) / 2.0)), size: checkSize)
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self.activityIndicator.frame = CGRect(origin: CGPoint(x: size.width - 17.0 - indicatorSize.width, y: floor((size.height - indicatorSize.height) / 2.0)), size: indicatorSize)
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}
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}
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func transitionNode(media: InstantPageMedia) -> ASDisplayNode? {
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return nil
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}
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func updateHiddenMedia(media: InstantPageMedia?) {
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}
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func updateIsVisible(_ isVisible: Bool) {
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}
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@objc func buttonPressed() {
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self.openPeer(self.initialPeer.id)
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}
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@objc func joinPressed() {
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if case .notJoined = self.joinState {
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self.updateJoinState(.inProgress)
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self.joinDisposable.set((joinChannel(account: self.account, peerId: self.initialPeer.id) |> deliverOnMainQueue).start(error: { [weak self] _ in
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if let strongSelf = self {
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if case .inProgress = strongSelf.joinState {
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strongSelf.updateJoinState(.notJoined)
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}
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}
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}))
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}
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}
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}
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