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https://github.com/Swiftgram/Telegram-iOS.git
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Refactoring [skip ci]
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Ali
@@ -0,0 +1,215 @@
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import Foundation
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import UIKit
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import Postbox
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import AsyncDisplayKit
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import Display
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import SwiftSignalKit
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import TelegramPresentationData
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import AccountContext
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import WallpaperBackgroundNode
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import ChatControllerInteraction
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import ChatMessageItemCommon
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private let titleFont = UIFont.systemFont(ofSize: 13.0)
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public class ChatUnreadItem: ListViewItem {
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public let index: MessageIndex
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public let presentationData: ChatPresentationData
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public let controllerInteraction: ChatControllerInteraction
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public let header: ChatMessageDateHeader
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public init(index: MessageIndex, presentationData: ChatPresentationData, controllerInteraction: ChatControllerInteraction, context: AccountContext) {
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self.index = index
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self.presentationData = presentationData
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self.controllerInteraction = controllerInteraction
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self.header = ChatMessageDateHeader(timestamp: index.timestamp, scheduled: false, presentationData: presentationData, controllerInteraction: controllerInteraction, context: context)
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}
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public func nodeConfiguredForParams(async: @escaping (@escaping () -> Void) -> Void, params: ListViewItemLayoutParams, synchronousLoads: Bool, previousItem: ListViewItem?, nextItem: ListViewItem?, completion: @escaping (ListViewItemNode, @escaping () -> (Signal<Void, NoError>?, (ListViewItemApply) -> Void)) -> Void) {
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async {
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let node = ChatUnreadItemNode()
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let dateAtBottom = !chatItemsHaveCommonDateHeader(self, nextItem)
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let (layout, apply) = node.asyncLayout()(self, params, dateAtBottom)
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node.contentSize = layout.contentSize
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node.insets = layout.insets
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Queue.mainQueue().async {
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completion(node, {
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return (nil, { _ in
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apply()
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})
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})
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}
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}
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}
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public func updateNode(async: @escaping (@escaping () -> Void) -> Void, node: @escaping () -> ListViewItemNode, params: ListViewItemLayoutParams, previousItem: ListViewItem?, nextItem: ListViewItem?, animation: ListViewItemUpdateAnimation, completion: @escaping (ListViewItemNodeLayout, @escaping (ListViewItemApply) -> Void) -> Void) {
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Queue.mainQueue().async {
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if let nodeValue = node() as? ChatUnreadItemNode {
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let nodeLayout = nodeValue.asyncLayout()
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async {
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let dateAtBottom = !chatItemsHaveCommonDateHeader(self, nextItem)
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let (layout, apply) = nodeLayout(self, params, dateAtBottom)
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Queue.mainQueue().async {
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completion(layout, { _ in
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apply()
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})
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}
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}
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} else {
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assertionFailure()
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}
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}
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}
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}
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public class ChatUnreadItemNode: ListViewItemNode {
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public var item: ChatUnreadItem?
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public let backgroundNode: ASImageNode
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public let labelNode: TextNode
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public let activateArea: AccessibilityAreaNode
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private var wallpaperBackgroundNode: WallpaperBackgroundNode?
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private var backgroundContent: WallpaperBubbleBackgroundNode?
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private var absolutePosition: (CGRect, CGSize)?
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private var theme: ChatPresentationThemeData?
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private let layoutConstants = ChatMessageItemLayoutConstants.default
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public init() {
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self.backgroundNode = ASImageNode()
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self.backgroundNode.isLayerBacked = true
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self.backgroundNode.displayWithoutProcessing = true
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self.labelNode = TextNode()
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self.labelNode.isUserInteractionEnabled = false
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self.activateArea = AccessibilityAreaNode()
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self.activateArea.accessibilityTraits = .staticText
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super.init(layerBacked: false, dynamicBounce: true, rotated: true)
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self.addSubnode(self.backgroundNode)
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self.addSubnode(self.labelNode)
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self.addSubnode(self.activateArea)
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self.transform = CATransform3DMakeRotation(CGFloat.pi, 0.0, 0.0, 1.0)
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self.scrollPositioningInsets = UIEdgeInsets(top: 5.0, left: 0.0, bottom: 6.0, right: 0.0)
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self.canBeUsedAsScrollToItemAnchor = false
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}
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override public func animateInsertion(_ currentTimestamp: Double, duration: Double, short: Bool) {
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super.animateInsertion(currentTimestamp, duration: duration, short: short)
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self.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.2)
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}
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override public func animateAdded(_ currentTimestamp: Double, duration: Double) {
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self.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.2)
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}
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override public func layoutForParams(_ params: ListViewItemLayoutParams, item: ListViewItem, previousItem: ListViewItem?, nextItem: ListViewItem?) {
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if let item = item as? ChatUnreadItem {
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let dateAtBottom = !chatItemsHaveCommonDateHeader(item, nextItem)
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let (layout, apply) = self.asyncLayout()(item, params, dateAtBottom)
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apply()
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self.contentSize = layout.contentSize
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self.insets = layout.insets
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}
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}
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public func asyncLayout() -> (_ item: ChatUnreadItem, _ params: ListViewItemLayoutParams, _ dateAtBottom: Bool) -> (ListViewItemNodeLayout, () -> Void) {
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let labelLayout = TextNode.asyncLayout(self.labelNode)
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let layoutConstants = self.layoutConstants
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let currentTheme = self.theme
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return { item, params, dateAtBottom in
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var updatedBackgroundImage: UIImage?
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if currentTheme != item.presentationData.theme {
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updatedBackgroundImage = PresentationResourcesChat.chatUnreadBarBackgroundImage(item.presentationData.theme.theme)
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}
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let string = item.presentationData.strings.Conversation_UnreadMessages
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let (size, apply) = labelLayout(TextNodeLayoutArguments(attributedString: NSAttributedString(string: string, font: titleFont, textColor: item.presentationData.theme.theme.chat.serviceMessage.unreadBarTextColor), backgroundColor: nil, maximumNumberOfLines: 1, truncationType: .end, constrainedSize: CGSize(width: params.width - params.leftInset - params.rightInset, height: CGFloat.greatestFiniteMagnitude), alignment: .natural, cutout: nil, insets: UIEdgeInsets()))
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let backgroundSize = CGSize(width: params.width, height: 25.0)
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return (ListViewItemNodeLayout(contentSize: CGSize(width: params.width, height: 25.0), insets: UIEdgeInsets(top: 6.0 + (dateAtBottom ? layoutConstants.timestampHeaderHeight : 0.0), left: 0.0, bottom: 5.0, right: 0.0)), { [weak self] in
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if let strongSelf = self {
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strongSelf.item = item
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strongSelf.theme = item.presentationData.theme
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if let updatedBackgroundImage = updatedBackgroundImage {
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strongSelf.backgroundNode.image = updatedBackgroundImage
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}
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let _ = apply()
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strongSelf.activateArea.frame = CGRect(origin: CGPoint(x: params.leftInset, y: 0.0), size: backgroundSize)
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strongSelf.activateArea.accessibilityLabel = string
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strongSelf.backgroundNode.frame = CGRect(origin: CGPoint(x: 0.0, y: 0.0), size: backgroundSize)
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strongSelf.labelNode.frame = CGRect(origin: CGPoint(x: floorToScreenPixels((backgroundSize.width - size.size.width) / 2.0), y: floorToScreenPixels((backgroundSize.height - size.size.height) / 2.0)), size: size.size)
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if item.controllerInteraction.presentationContext.backgroundNode?.hasExtraBubbleBackground() == true {
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if strongSelf.backgroundContent == nil, let backgroundContent = item.controllerInteraction.presentationContext.backgroundNode?.makeBubbleBackground(for: .free) {
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backgroundContent.clipsToBounds = true
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strongSelf.backgroundContent = backgroundContent
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strongSelf.insertSubnode(backgroundContent, at: 0)
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}
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} else {
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strongSelf.backgroundContent?.removeFromSupernode()
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strongSelf.backgroundContent = nil
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}
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if let backgroundContent = strongSelf.backgroundContent {
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strongSelf.backgroundNode.isHidden = true
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backgroundContent.frame = strongSelf.backgroundNode.frame
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if let (rect, containerSize) = strongSelf.absolutePosition {
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strongSelf.updateAbsoluteRect(rect, within: containerSize)
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}
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} else {
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strongSelf.backgroundNode.isHidden = false
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}
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}
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})
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}
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}
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override public func updateAbsoluteRect(_ rect: CGRect, within containerSize: CGSize) {
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super.updateAbsoluteRect(rect, within: containerSize)
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self.absolutePosition = (rect, containerSize)
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if let backgroundContent = self.backgroundContent {
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var backgroundFrame = backgroundContent.frame
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backgroundFrame.origin.x += rect.minX
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backgroundFrame.origin.y += containerSize.height - rect.minY
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backgroundContent.update(rect: backgroundFrame, within: containerSize, transition: .immediate)
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}
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}
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override public func headers() -> [ListViewItemHeader]? {
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if let item = self.item {
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return [item.header]
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} else {
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return nil
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}
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}
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override public func animateRemoved(_ currentTimestamp: Double, duration: Double) {
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super.animateRemoved(currentTimestamp, duration: duration)
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self.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.2, removeOnCompletion: false)
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}
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}
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