WinterGram/submodules/TelegramUI/Components/Chat/ChatMessageRichDataBubbleContentNode/Sources/ChatMessageRichDataBubbleContentNode.swift
isaac 562de27c30 InstantPage V2: AI streaming animation for rich-data bubbles
Spec, plan, and full implementation of the AI-message streaming
animation in ChatMessageRichDataBubbleContentNode. Extracts
TextRevealController into a shared StreamingTextReveal submodule;
precomputes per-character rects in V2 layout (RTL-safe, glyph-ink
bounds); splits InstantPageV2TextView into render container + render
view with a reveal mask layer; implements mask + snippet pop-in
reveal; adds a per-text-view reveal cost map + applyReveal extension;
switches reveal cost to a width-based unit; sizes / clips the bubble
to the revealed prefix during streaming; aligns the Thinking… header
with TextBubble; floors table cell reveal cost at cell frame width;
includes layout closing pad in revealedContentSize; documents the
non-obvious invariants in CLAUDE.md.
2026-05-20 00:34:07 +08:00

1180 lines
64 KiB
Swift

import Foundation
import UIKit
import AsyncDisplayKit
import Display
import TelegramCore
import SwiftSignalKit
import AccountContext
import ChatMessageBubbleContentNode
import ChatMessageDateAndStatusNode
import ChatMessageItemCommon
import ChatControllerInteraction
import InstantPageUI
import TelegramUIPreferences
import TextLoadingEffect
import TextSelectionNode
import StreamingTextReveal
import ShimmeringMask
import InteractiveTextComponent
import TextNodeWithEntities
public class ChatMessageRichDataBubbleContentNode: ChatMessageBubbleContentNode {
public final class ContainerNode: ASDisplayNode {
}
private let containerNode: ContainerNode
public var statusNode: ChatMessageDateAndStatusNode?
// `init()` may run off the main thread; UIView construction must happen on the main thread.
// The page view is built lazily inside the apply closure (always main-thread) via ensurePageView().
private var pageView: InstantPageV2View?
// Tracks the message (id + stableVersion) baked into the current pageView's render context.
// The synthesized webpage uses a sentinel id (namespace 0, id 0) shared across all richText
// messages, so we key cache invalidation on the message itself. When the bubble is recycled
// with a different message we must discard pageView (render context is constructor-fixed).
private var pageViewMessageKey: (id: EngineMessage.Id, stableVersion: UInt32)?
// messageStableVersion is in the cache key because the synthesized instantPage content
// mutates between streamed AI message chunks (each chunk bumps stableVersion); without
// this, the cached layout would shadow newly-arrived content during streaming.
private var currentPageLayout: (boundingWidth: CGFloat,
presentationThemeIdentity: ObjectIdentifier,
expandedDetails: [Int: Bool],
messageStableVersion: UInt32,
layout: InstantPageV2Layout)?
private var currentExpandedDetails: [Int: Bool] = [:]
private var linkProgressDisposable: Disposable?
private var linkProgressRects: [CGRect]?
private var linkHighlightingNode: LinkHighlightingNode?
private var linkProgressView: TextLoadingEffectView?
private var textSelectionAdapter: InstantPageMultiTextAdapter?
private var textSelectionNode: TextSelectionNode?
private var streamingStatusTextNode: InteractiveTextNodeWithEntities?
private var streamingStatusShimmerView: ShimmeringMaskView?
private var textRevealController: TextRevealController?
private var textRevealLink: SharedDisplayLinkDriver.Link?
private var currentRevealCostMap: InstantPageV2RevealCostMap?
// Cursor value pushed into pageView.applyReveal on the prior tick. The display-link tick
// compares the revealed prefix's height at this cursor vs the new cursor to decide when
// to request a full bubble re-layout (so the bubble grows with the reveal).
private var lastAppliedRevealedCount: Int = 0
required public init() {
self.containerNode = ContainerNode()
self.containerNode.clipsToBounds = true
super.init()
self.addSubnode(self.containerNode)
}
/// Builds (or reuses) the V2View. The render context is constructor-fixed on V2View, so
/// when the bubble is recycled with a different webpage we must rebuild the V2View.
private func ensurePageView(item: ChatMessageBubbleContentItem, webpage: TelegramMediaWebpage) -> InstantPageV2View {
let key = (id: item.message.id, stableVersion: item.message.stableVersion)
if let existing = self.pageView,
let current = self.pageViewMessageKey,
current.id == key.id,
current.stableVersion == key.stableVersion {
return existing
}
self.pageView?.removeFromSuperview()
self.pageView = nil
// Capture only the MessageReference (value type) the closures are retained on the
// render context which is owned by the V2View, so we must avoid making them retain
// the bubble (`self`) or the message indirectly via `item`.
let messageReference = MessageReference(item.message)
let renderContext = InstantPageV2RenderContext(
context: item.context,
webpage: webpage,
sourceLocation: InstantPageSourceLocation(userLocation: .other, peerType: .channel),
imageReference: { image in
return ImageMediaReference.message(message: messageReference, media: image)
},
fileReference: { file in
return FileMediaReference.message(message: messageReference, media: file)
},
present: { [weak self] controller, args in
self?.item?.controllerInteraction.presentController(controller, args)
},
push: { [weak self] controller in
self?.item?.controllerInteraction.navigationController()?.pushViewController(controller)
},
openUrl: { [weak self] urlItem in
self?.openInstantPageUrl(urlItem)
},
baseNavigationController: { [weak self] in
self?.item?.controllerInteraction.navigationController()
}
)
let view = InstantPageV2View(renderContext: renderContext)
self.pageView = view
self.pageViewMessageKey = key
self.containerNode.view.addSubview(view)
view.detailsTapped = { [weak self] index in
guard let self else { return }
let current = self.currentExpandedDetails[index] ?? self.defaultExpanded(forDetailsIndex: index)
self.currentExpandedDetails[index] = !current
if let item = self.item {
item.controllerInteraction.requestMessageUpdate(item.message.id, true, nil)
}
}
return view
}
private func defaultExpanded(forDetailsIndex index: Int) -> Bool {
guard let layout = self.currentPageLayout?.layout else { return false }
for item in layout.items {
if case let .details(d) = item, d.index == index {
return d.defaultExpanded
}
}
return false
}
required public init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
deinit {
self.linkProgressDisposable?.dispose()
}
override public func asyncLayoutContent() -> (_ item: ChatMessageBubbleContentItem, _ layoutConstants: ChatMessageItemLayoutConstants, _ preparePosition: ChatMessageBubblePreparePosition, _ messageSelection: Bool?, _ constrainedSize: CGSize, _ avatarInset: CGFloat) -> (ChatMessageBubbleContentProperties, CGSize?, CGFloat, (CGSize, ChatMessageBubbleContentPosition) -> (CGFloat, (CGFloat) -> (CGSize, (ListViewItemUpdateAnimation, Bool, ListViewItemApply?) -> Void))) {
let previousItem = self.item
let streamingStatusTextLayout = InteractiveTextNodeWithEntities.asyncLayout(self.streamingStatusTextNode)
let currentPageLayout = self.currentPageLayout
let currentExpandedDetails = self.currentExpandedDetails
let statusLayout = ChatMessageDateAndStatusNode.asyncLayout(self.statusNode)
// Captured at main-thread, top of asyncLayoutContent. Mirrors TextBubble's
// `currentMaxGlyphCount` (TextBubble:313). The bubble's bounding size is sized
// to this revealed prefix during streaming, so it grows with the reveal rather
// than being final-sized from the first chunk.
let currentMaxGlyphCount: Int? = self.textRevealController?.currentGlyphCount
return { [weak self] item, layoutConstants, _, _, _, _ in
let contentProperties = ChatMessageBubbleContentProperties(hidesSimpleAuthorHeader: false, headerSpacing: 0.0, hidesBackground: .never, forceFullCorners: false, forceAlignment: .none)
return (contentProperties, nil, CGFloat.greatestFiniteMagnitude, { constrainedSize, position in
// topInset matches TextBubble's logic at lines 234-249 gives the "Thinking"
// header the same vertical alignment as TextBubble's status header does inside
// its bubble.
var topInset: CGFloat = 0.0
if case let .linear(top, _) = position {
switch top {
case .None:
topInset = layoutConstants.text.bubbleInsets.top
case let .Neighbour(_, topType, _):
switch topType {
case .text:
topInset = layoutConstants.text.bubbleInsets.top - 2.0
case .header, .footer, .media, .reactions:
topInset = layoutConstants.text.bubbleInsets.top
}
default:
topInset = layoutConstants.text.bubbleInsets.top
}
}
let suggestedBoundingWidth: CGFloat = constrainedSize.width
var boundingSize = CGSize(width: suggestedBoundingWidth, height: 0.0)
var pageLayout: InstantPageV2Layout?
// Built alongside pageLayout so the apply closure can hand it to ensurePageView.
var pageWebpage: TelegramMediaWebpage?
let isDark = item.presentationData.theme.theme.overallDarkAppearance
let isIncoming = item.message.effectivelyIncoming(item.context.account.peerId)
let messageTheme = isIncoming ? item.presentationData.theme.theme.chat.message.incoming : item.presentationData.theme.theme.chat.message.outgoing
var underlineLinks = true
if !messageTheme.primaryTextColor.isEqual(messageTheme.linkTextColor) {
underlineLinks = false
}
let _ = underlineLinks
let author = item.message.author
let mainColor: UIColor
var secondaryColor: UIColor? = nil
var tertiaryColor: UIColor? = nil
let nameColors: PeerNameColors.Colors?
switch author?.nameColor {
case let .preset(nameColor):
nameColors = item.context.peerNameColors.get(nameColor, dark: item.presentationData.theme.theme.overallDarkAppearance)
case let .collectible(collectibleColor):
nameColors = collectibleColor.peerNameColors(dark: item.presentationData.theme.theme.overallDarkAppearance)
default:
nameColors = nil
}
let codeBlockTitleColor: UIColor
let codeBlockAccentColor: UIColor
let codeBlockBackgroundColor: UIColor
if !isIncoming {
mainColor = messageTheme.accentTextColor
if let _ = nameColors?.secondary {
secondaryColor = .clear
}
if let _ = nameColors?.tertiary {
tertiaryColor = .clear
}
if item.presentationData.theme.theme.overallDarkAppearance {
codeBlockTitleColor = .white
codeBlockAccentColor = UIColor(white: 1.0, alpha: 0.5)
codeBlockBackgroundColor = UIColor(white: 0.0, alpha: 0.25)
} else {
codeBlockTitleColor = mainColor
codeBlockAccentColor = mainColor
codeBlockBackgroundColor = mainColor.withMultipliedAlpha(0.1)
}
} else {
let authorNameColor = nameColors?.main
secondaryColor = nameColors?.secondary
tertiaryColor = nameColors?.tertiary
if let authorNameColor {
mainColor = authorNameColor
} else {
mainColor = messageTheme.accentTextColor
}
codeBlockTitleColor = mainColor
codeBlockAccentColor = mainColor
if item.presentationData.theme.theme.overallDarkAppearance {
codeBlockBackgroundColor = UIColor(white: 0.0, alpha: 0.65)
} else {
codeBlockBackgroundColor = UIColor(white: 0.0, alpha: 0.05)
}
}
let _ = secondaryColor
let _ = tertiaryColor
let _ = codeBlockTitleColor
let _ = codeBlockAccentColor
let textCategories = InstantPageTextCategories(
kicker: InstantPageTextAttributes(font: InstantPageFont(style: .sans, size: 15.0, lineSpacingFactor: 0.685), color: messageTheme.primaryTextColor),
header: InstantPageTextAttributes(font: InstantPageFont(style: .serif, size: 24.0, lineSpacingFactor: 0.685), color: messageTheme.primaryTextColor),
subheader: InstantPageTextAttributes(font: InstantPageFont(style: .serif, size: 19.0, lineSpacingFactor: 0.685), color: messageTheme.primaryTextColor),
paragraph: InstantPageTextAttributes(font: InstantPageFont(style: .sans, size: 17.0, lineSpacingFactor: 1.0), color: messageTheme.primaryTextColor),
caption: InstantPageTextAttributes(font: InstantPageFont(style: .sans, size: 15.0, lineSpacingFactor: 1.0), color: messageTheme.secondaryTextColor),
credit: InstantPageTextAttributes(font: InstantPageFont(style: .sans, size: 13.0, lineSpacingFactor: 1.0), color: messageTheme.secondaryTextColor),
table: InstantPageTextAttributes(font: InstantPageFont(style: .sans, size: 15.0, lineSpacingFactor: 1.0), color: messageTheme.primaryTextColor),
article: InstantPageTextAttributes(font: InstantPageFont(style: .serif, size: 18.0, lineSpacingFactor: 1.0), color: messageTheme.primaryTextColor)
)
let pageTheme = InstantPageTheme(
type: isDark ? .dark : .light,
pageBackgroundColor: .clear,
textCategories: textCategories,
serif: false,
codeBlockBackgroundColor: codeBlockBackgroundColor,
linkColor: messageTheme.linkTextColor,
textHighlightColor: messageTheme.accentTextColor.withMultipliedAlpha(0.1),
linkHighlightColor: messageTheme.linkTextColor.withMultipliedAlpha(0.1),
markerColor: UIColor(rgb: 0xfef3bc),
panelBackgroundColor: messageTheme.accentControlColor.withMultipliedAlpha(0.1),
panelHighlightedBackgroundColor: messageTheme.accentControlColor.withMultipliedAlpha(0.25),
panelPrimaryColor: messageTheme.primaryTextColor,
panelSecondaryColor: messageTheme.secondaryTextColor,
panelAccentColor: messageTheme.accentTextColor,
tableBorderColor: isDark || !isIncoming ? messageTheme.accentControlColor.withMultipliedAlpha(0.25) : UIColor(white: 0.0, alpha: 0.1),
tableHeaderColor: isDark || !isIncoming ? messageTheme.accentControlColor.withMultipliedAlpha(0.1) : UIColor(white: 0.0, alpha: 0.05),
controlColor: messageTheme.accentControlColor,
imageTintColor: nil,
overlayPanelColor: isDark ? UIColor(white: 0.0, alpha: 0.13) : UIColor(white: 1.0, alpha: 0.13)
)
var hasDraft = false
if item.message.attributes.contains(where: { $0 is TypingDraftMessageAttribute }) {
hasDraft = true
}
var hadDraft = false
if let previousItem, previousItem.message.attributes.contains(where: { $0 is TypingDraftMessageAttribute }) {
hadDraft = true
}
if let attribute = item.message.richText {
let webpage = TelegramMediaWebpage(webpageId: EngineMedia.Id(namespace: 0, id: 0), content: .Loaded(TelegramMediaWebpageLoadedContent(
url: "",
displayUrl: "",
hash: 0,
type: nil,
websiteName: nil,
title: nil,
text: nil,
embedUrl: nil,
embedType: nil,
embedSize: nil,
duration: nil,
author: nil,
isMediaLargeByDefault: nil,
imageIsVideoCover: false,
image: nil,
file: nil,
story: nil,
attributes: [],
instantPage: attribute.instantPage
)))
pageWebpage = webpage
let presentationThemeIdentity = ObjectIdentifier(item.presentationData.theme.theme)
let currentMessageStableVersion = item.message.stableVersion
if let current = currentPageLayout,
current.boundingWidth == suggestedBoundingWidth,
current.presentationThemeIdentity == presentationThemeIdentity,
current.expandedDetails == currentExpandedDetails,
current.messageStableVersion == currentMessageStableVersion {
pageLayout = current.layout
} else {
pageLayout = layoutInstantPageV2(
webpage: webpage,
instantPage: attribute.instantPage,
userLocation: .other,
boundingWidth: suggestedBoundingWidth - 2.0,
horizontalInset: 10.0,
theme: pageTheme,
strings: item.presentationData.strings,
dateTimeFormat: item.presentationData.dateTimeFormat,
cachedMessageSyntaxHighlight: nil,
expandedDetails: currentExpandedDetails,
fitToWidth: true,
computeRevealCharacterRects: hasDraft || hadDraft
)
}
}
// Cost map computed here (not in apply) so we can size the bubble to the
// revealed prefix this layout pass. Mirrors TextBubble's clippedGlyphCountLayout.
let revealCostMap: InstantPageV2RevealCostMap? = (hasDraft || hadDraft) ? pageLayout?.computeRevealCostMap() : nil
let revealedGlyphCount: Int? = (hasDraft || hadDraft) ? (currentMaxGlyphCount ?? 0) : nil
if let pageLayout {
let effectiveSize: CGSize
if let costMap = revealCostMap, let glyphCount = revealedGlyphCount {
effectiveSize = costMap.revealedContentSize(revealedCount: glyphCount, layout: pageLayout)
} else {
effectiveSize = pageLayout.contentSize
}
boundingSize.width = effectiveSize.width
boundingSize.height = effectiveSize.height + 2.0
}
let textFont = item.presentationData.messageFont
let textInsets = UIEdgeInsets(top: 2.0, left: 2.0, bottom: 5.0, right: 2.0)
let streamingTextSpacing: CGFloat = 1.0
let textConstrainedSize = CGSize(width: suggestedBoundingWidth - 4.0, height: .greatestFiniteMagnitude)
var streamingTextLayoutAndApply: (layout: InteractiveTextNodeLayout, apply: (InteractiveTextNodeWithEntities.Arguments) -> InteractiveTextNodeWithEntities)?
if hasDraft || hadDraft {
//TODO:localize
streamingTextLayoutAndApply = streamingStatusTextLayout(InteractiveTextNodeLayoutArguments(
attributedString: NSAttributedString(string: "Thinking...", font: textFont, textColor: messageTheme.fileDescriptionColor),
backgroundColor: nil,
maximumNumberOfLines: 1,
truncationType: .end,
constrainedSize: textConstrainedSize,
alignment: .natural,
cutout: nil,
insets: textInsets,
lineColor: messageTheme.accentControlColor,
customTruncationToken: nil,
computeCharacterRects: true
))
}
// Origin mirrors TextBubble:783 (bubbleInsets.left - textInsets.left,
// topInset - textInsets.top). The negative textInset offsets cancel the
// inset that's baked into the InteractiveTextNode layout, so the visible
// glyph origin aligns with (bubbleInsets.left, topInset).
var streamingTextFrame: CGRect?
if let streamingTextLayoutAndApply {
streamingTextFrame = CGRect(
origin: CGPoint(
x: layoutConstants.text.bubbleInsets.left - textInsets.left,
y: topInset - textInsets.top
),
size: streamingTextLayoutAndApply.layout.size
)
}
// Offset for the pageView (and status node y-shift) places the pageView
// right below the streaming header's *visible* bottom (= origin.y + height
// - inset.bottom, since the layout-baked inset.bottom isn't visible content)
// plus a 1pt spacing.
let streamingHeaderOffset: CGFloat
if let streamingTextFrame {
streamingHeaderOffset = streamingTextFrame.origin.y + streamingTextFrame.height - textInsets.bottom + streamingTextSpacing
} else {
streamingHeaderOffset = 0.0
}
if let streamingTextFrame {
// Mirrors TextBubble's suggestedBoundingWidth contribution at lines 886-893:
// visible_thinking_width + bubbleInsets.left + bubbleInsets.right
// where visible_thinking_width = streamingTextFrame.width - textInsets.left
// - textInsets.right. Adds 2pt for RichData's 1pt-per-side containerNode
// border that TextBubble doesn't have. Without this, an empty-pageLayout
// bubble was sized too narrow to fit the "Thinking" label.
let visibleThinkingWidth = streamingTextFrame.width - textInsets.left - textInsets.right
let thinkingMinBubbleWidth = visibleThinkingWidth + layoutConstants.text.bubbleInsets.left + layoutConstants.text.bubbleInsets.right + 2.0
boundingSize.width = max(boundingSize.width, thinkingMinBubbleWidth)
// Adds exactly the vertical space the streaming header consumes before the
// pageView starts (= where pageView's frame.origin.y will be set). Keeps
// the bubble's total height consistent with `containerHeight + closingPad + 2`
// computed in the apply closure.
boundingSize.height += streamingHeaderOffset
}
let message = item.message
let incoming = isIncoming
var edited = false
if item.attributes.updatingMedia != nil {
edited = true
}
var viewCount: Int?
var dateReplies = 0
var starsCount: Int64?
var dateReactionsAndPeers = mergedMessageReactionsAndPeers(accountPeerId: item.context.account.peerId, accountPeer: item.associatedData.accountPeer, message: item.topMessage)
if item.message.isRestricted(platform: "ios", contentSettings: item.context.currentContentSettings.with { $0 }) {
dateReactionsAndPeers = ([], [])
}
for attribute in item.message.attributes {
if let attribute = attribute as? EditedMessageAttribute {
edited = !attribute.isHidden
} else if let attribute = attribute as? ViewCountMessageAttribute {
viewCount = attribute.count
} else if let attribute = attribute as? ReplyThreadMessageAttribute, case .peer = item.chatLocation {
if let channel = item.message.peers[item.message.id.peerId] as? TelegramChannel, case .group = channel.info {
dateReplies = Int(attribute.count)
}
} else if let attribute = attribute as? PaidStarsMessageAttribute, item.message.id.peerId.namespace == Namespaces.Peer.CloudChannel {
starsCount = attribute.stars.value
}
}
let dateFormat: MessageTimestampStatusFormat
if item.presentationData.isPreview {
dateFormat = .full
} else if let subject = item.associatedData.subject, case .messageOptions = subject {
dateFormat = .minimal
} else {
dateFormat = .regular
}
let dateText = stringForMessageTimestampStatus(accountPeerId: item.context.account.peerId, message: EngineMessage(item.message), dateTimeFormat: item.presentationData.dateTimeFormat, nameDisplayOrder: item.presentationData.nameDisplayOrder, strings: item.presentationData.strings, format: dateFormat, associatedData: item.associatedData)
let statusType: ChatMessageDateAndStatusType?
var displayStatus = false
switch position {
case let .linear(_, neighbor):
if case .None = neighbor {
displayStatus = true
} else if case .Neighbour(true, _, _) = neighbor {
displayStatus = true
}
default:
break
}
if case let .customChatContents(contents) = item.associatedData.subject {
if case .hashTagSearch = contents.kind {
displayStatus = true
} else {
displayStatus = false
}
} else if !item.presentationData.chatBubbleCorners.hasTails {
displayStatus = false
} else if case let .messageOptions(_, _, info) = item.associatedData.subject, case let .link(link) = info, link.isCentered {
displayStatus = false
}
if "".isEmpty {
displayStatus = false
}
if displayStatus {
if incoming {
statusType = .BubbleIncoming
} else {
if message.flags.contains(.Failed) {
statusType = .BubbleOutgoing(.Failed)
} else if (message.flags.isSending && !message.isSentOrAcknowledged) || item.attributes.updatingMedia != nil {
statusType = .BubbleOutgoing(.Sending)
} else {
statusType = .BubbleOutgoing(.Sent(read: item.read))
}
}
} else {
statusType = nil
}
let lastTextLineFrame: CGRect? = pageLayout.flatMap(InstantPageUI.lastTextLineFrame(in:))
var statusSuggestedWidthAndContinue: (CGFloat, (CGFloat) -> (CGSize, (ListViewItemUpdateAnimation) -> ChatMessageDateAndStatusNode))?
if let statusType = statusType {
var isReplyThread = false
if case .replyThread = item.chatLocation {
isReplyThread = true
}
let trailingWidthToMeasure: CGFloat = lastTextLineFrame?.width ?? 10000.0
let dateLayoutInput: ChatMessageDateAndStatusNode.LayoutInput = .trailingContent(contentWidth: trailingWidthToMeasure, reactionSettings: ChatMessageDateAndStatusNode.TrailingReactionSettings(displayInline: shouldDisplayInlineDateReactions(message: EngineMessage(item.message), isPremium: item.associatedData.isPremium, forceInline: item.associatedData.forceInlineReactions), preferAdditionalInset: false))
statusSuggestedWidthAndContinue = statusLayout(ChatMessageDateAndStatusNode.Arguments(
context: item.context,
presentationData: item.presentationData,
edited: edited && !item.presentationData.isPreview,
impressionCount: !item.presentationData.isPreview ? viewCount : nil,
dateText: dateText,
type: statusType,
layoutInput: dateLayoutInput,
constrainedSize: CGSize(width: suggestedBoundingWidth, height: .greatestFiniteMagnitude),
availableReactions: item.associatedData.availableReactions,
savedMessageTags: item.associatedData.savedMessageTags,
reactions: item.presentationData.isPreview ? [] : dateReactionsAndPeers.reactions,
reactionPeers: dateReactionsAndPeers.peers,
displayAllReactionPeers: item.message.id.peerId.namespace == Namespaces.Peer.CloudUser,
areReactionsTags: item.topMessage.areReactionsTags(accountPeerId: item.context.account.peerId),
areStarReactionsEnabled: item.associatedData.areStarReactionsEnabled,
messageEffect: item.topMessage.messageEffect(availableMessageEffects: item.associatedData.availableMessageEffects),
replyCount: dateReplies,
starsCount: starsCount,
isPinned: item.message.tags.contains(.pinned) && (!item.associatedData.isInPinnedListMode || isReplyThread),
hasAutoremove: item.message.isSelfExpiring,
canViewReactionList: canViewMessageReactionList(message: EngineMessage(item.topMessage)),
animationCache: item.controllerInteraction.presentationContext.animationCache,
animationRenderer: item.controllerInteraction.presentationContext.animationRenderer
))
}
if let statusSuggestedWidthAndContinue, !hasDraft {
let statusLeftEdgeInBubble: CGFloat
if let lastTextLineFrame {
statusLeftEdgeInBubble = 1.0 + lastTextLineFrame.minX
} else {
statusLeftEdgeInBubble = 1.0
}
boundingSize.width = max(boundingSize.width, statusLeftEdgeInBubble * 2.0 + statusSuggestedWidthAndContinue.0)
}
return (boundingSize.width, { boundingWidth in
let statusSizeAndApply = statusSuggestedWidthAndContinue?.1(boundingWidth)
if let statusSizeAndApply, !hasDraft {
boundingSize.height += statusSizeAndApply.0.height
}
return (boundingSize, { animation, _, _ in
guard let self else {
return
}
self.item = item
animation.animator.updateFrame(layer: self.containerNode.layer, frame: CGRect(origin: CGPoint(x: 1.0, y: 1.0), size: CGSize(width: boundingWidth - 2.0, height: boundingSize.height)), completion: nil)
if let statusSizeAndApply {
let statusFrameX: CGFloat
let statusFrameY: CGFloat
if let lastTextLineFrame {
statusFrameX = 1.0 + lastTextLineFrame.minX
statusFrameY = 1.0 + lastTextLineFrame.maxY
} else if let pageLayout {
statusFrameX = 1.0
statusFrameY = 1.0 + pageLayout.contentSize.height
} else {
statusFrameX = 1.0
statusFrameY = 1.0
}
let statusFrame = CGRect(origin: CGPoint(x: statusFrameX, y: statusFrameY + streamingHeaderOffset), size: statusSizeAndApply.0)
let statusNode = statusSizeAndApply.1(self.statusNode == nil ? .None : animation)
if self.statusNode !== statusNode {
self.statusNode?.removeFromSupernode()
self.statusNode = statusNode
self.addSubnode(statusNode)
statusNode.reactionSelected = { [weak self] _, value, sourceView in
guard let self, let item = self.item else {
return
}
item.controllerInteraction.updateMessageReaction(item.topMessage, .reaction(value), false, sourceView)
}
statusNode.openReactionPreview = { [weak self] gesture, sourceNode, value in
guard let self, let item = self.item else {
gesture?.cancel()
return
}
item.controllerInteraction.openMessageReactionContextMenu(item.topMessage, sourceNode, gesture, value)
}
statusNode.frame = statusFrame
} else {
animation.animator.updatePosition(layer: statusNode.layer, position: statusFrame.center, completion: nil)
animation.animator.updateBounds(layer: statusNode.layer, bounds: CGRect(origin: .zero, size: statusFrame.size), completion: nil)
}
} else if let statusNode = self.statusNode {
self.statusNode = nil
statusNode.removeFromSupernode()
}
if let forwardInfo = item.message.forwardInfo, forwardInfo.flags.contains(.isImported), let statusNode = self.statusNode {
statusNode.pressed = { [weak self] in
guard let self, let statusNode = self.statusNode, let item = self.item else {
return
}
item.controllerInteraction.displayImportedMessageTooltip(statusNode)
}
} else {
self.statusNode?.pressed = nil
}
if let pageLayout, let pageWebpage, let _ = item.message.richText {
self.currentPageLayout = (
suggestedBoundingWidth,
ObjectIdentifier(item.presentationData.theme.theme),
self.currentExpandedDetails,
item.message.stableVersion,
pageLayout
)
let pageView = self.ensurePageView(item: item, webpage: pageWebpage)
pageView.update(layout: pageLayout, theme: pageTheme, animation: animation)
pageView.frame = CGRect(
origin: CGPoint(x: -1.0, y: streamingHeaderOffset),
size: pageLayout.contentSize
)
} else {
self.currentPageLayout = nil
self.pageView?.update(
layout: InstantPageV2Layout(contentSize: .zero, items: [], detailsIndices: []),
theme: pageTheme,
animation: animation
)
self.pageViewMessageKey = nil
}
// === Streaming state apply ===
// 1. Compute / cache the cost map.
// Reuse the cost map computed in the layout pass (the bubble's
// size depended on it) don't recompute.
self.currentRevealCostMap = revealCostMap
// 2. Update the "Thinking" header.
if let streamingTextFrame, let streamingTextLayoutAndApply {
var statusAnimation = animation
if self.streamingStatusTextNode == nil {
statusAnimation = .None
}
let streamingStatusTextNode = streamingTextLayoutAndApply.apply(InteractiveTextNodeWithEntities.Arguments(
context: item.context,
cache: item.controllerInteraction.presentationContext.animationCache,
renderer: item.controllerInteraction.presentationContext.animationRenderer,
placeholderColor: messageTheme.mediaPlaceholderColor,
attemptSynchronous: false,
textColor: messageTheme.primaryTextColor,
spoilerEffectColor: messageTheme.secondaryTextColor,
applyArguments: InteractiveTextNode.ApplyArguments(
animation: statusAnimation,
spoilerTextColor: messageTheme.primaryTextColor,
spoilerEffectColor: messageTheme.secondaryTextColor,
areContentAnimationsEnabled: item.context.sharedContext.energyUsageSettings.loopEmoji,
spoilerExpandRect: nil,
crossfadeContents: nil
)
))
let streamingStatusShimmerView: ShimmeringMaskView
if let current = self.streamingStatusShimmerView {
streamingStatusShimmerView = current
} else {
streamingStatusShimmerView = ShimmeringMaskView(peakAlpha: 0.3, duration: 1.0)
self.streamingStatusShimmerView = streamingStatusShimmerView
self.containerNode.view.addSubview(streamingStatusShimmerView)
}
if streamingStatusTextNode !== self.streamingStatusTextNode {
self.streamingStatusTextNode?.textNode.view.removeFromSuperview()
self.streamingStatusTextNode = streamingStatusTextNode
streamingStatusShimmerView.contentView.addSubview(streamingStatusTextNode.textNode.view)
}
statusAnimation.animator.updatePosition(layer: streamingStatusShimmerView.layer, position: streamingTextFrame.center, completion: nil)
statusAnimation.animator.updateBounds(layer: streamingStatusShimmerView.layer, bounds: CGRect(origin: .zero, size: streamingTextFrame.size), completion: nil)
statusAnimation.animator.updatePosition(layer: streamingStatusTextNode.textNode.layer, position: CGPoint(x: streamingTextFrame.size.width * 0.5, y: streamingTextFrame.size.height * 0.5), completion: nil)
statusAnimation.animator.updateBounds(layer: streamingStatusTextNode.textNode.layer, bounds: CGRect(origin: .zero, size: streamingTextFrame.size), completion: nil)
streamingStatusShimmerView.update(
size: streamingTextFrame.size,
containerWidth: streamingTextFrame.size.width,
offsetX: 0.0,
gradientWidth: 200.0,
transition: .immediate
)
} else if let streamingStatusShimmerView = self.streamingStatusShimmerView {
self.streamingStatusTextNode = nil
self.streamingStatusShimmerView = nil
animation.animator.updateAlpha(layer: streamingStatusShimmerView.layer, alpha: 0.0, completion: { [weak streamingStatusShimmerView] _ in
streamingStatusShimmerView?.removeFromSuperview()
})
}
// 3. Drive the reveal controller.
let previousAnimateGlyphCount: Int? = (hasDraft || hadDraft) ? (self.textRevealController?.currentGlyphCount ?? 0) : nil
if previousAnimateGlyphCount != nil || self.textRevealController != nil || hasDraft || hadDraft {
if hasDraft {
self.statusNode?.alpha = 0.0
}
// Seed the V2 view to the previous count so we don't flash full text at the start.
self.pageView?.applyReveal(revealedCount: previousAnimateGlyphCount ?? 0,
costMap: self.currentRevealCostMap,
animated: false)
self.lastAppliedRevealedCount = previousAnimateGlyphCount ?? 0
self.updateTextRevealAnimation(previousGlyphCount: previousAnimateGlyphCount ?? 0,
hasDraft: hasDraft,
hadDraft: hadDraft)
}
})
})
})
}
}
private func updateTextRevealAnimation(previousGlyphCount: Int, hasDraft: Bool, hadDraft: Bool) {
let toCount = self.currentRevealCostMap?.total ?? 0
let now = CACurrentMediaTime()
if hasDraft, let controller = self.textRevealController, controller.isFinalizing {
self.textRevealController = nil
self.textRevealLink = nil
}
if self.textRevealController == nil && (hasDraft || hadDraft) {
self.textRevealController = TextRevealController(initialRevealedCount: previousGlyphCount, initialLength: toCount, durationMultiplier: 10.0)
}
guard let controller = self.textRevealController else { return }
if hasDraft {
controller.observeUpdate(latestLength: toCount, at: now)
} else if hadDraft {
controller.finalize(finalLength: toCount)
}
if controller.isFinalizing && controller.revealedCount >= Double(controller.latestLength) {
self.textRevealController = nil
self.textRevealLink = nil
self.pageView?.applyReveal(revealedCount: nil, costMap: nil, animated: false)
self.lastAppliedRevealedCount = 0
return
}
guard toCount > 0 else { return }
if self.textRevealLink == nil {
self.textRevealLink = SharedDisplayLinkDriver.shared.add { [weak self] _ in
guard let self else { return }
guard let item = self.item else {
self.textRevealController = nil
self.textRevealLink = nil
return
}
guard let controller = self.textRevealController, let costMap = self.currentRevealCostMap else {
self.textRevealLink = nil
return
}
let now = CACurrentMediaTime()
let (revealedGlyphCount, isComplete) = controller.tick(now: now)
if isComplete {
self.textRevealController = nil
self.textRevealLink = nil
self.pageView?.applyReveal(revealedCount: nil, costMap: nil, animated: false)
self.lastAppliedRevealedCount = 0
if let statusNode = self.statusNode,
!item.message.attributes.contains(where: { $0 is TypingDraftMessageAttribute }) {
ContainedViewLayoutTransition.animated(duration: 0.2, curve: .easeInOut).updateAlpha(node: statusNode, alpha: 1.0)
}
self.requestFullUpdate?(ControlledTransition(duration: 0.15, curve: .easeInOut, interactive: false))
} else {
// If the revealed prefix's bottom y would change at the new cursor (i.e.
// crossing a line/item boundary), trigger a full bubble re-layout so the
// bubble grows with the reveal. Mirrors TextBubble's
// `cachedLayout.sizeForCharacterCount(...)` check at lines 1209-1216.
var requestUpdate = false
if let pageLayout = self.currentPageLayout?.layout, self.lastAppliedRevealedCount != revealedGlyphCount {
let prevHeight = costMap.revealedContentSize(revealedCount: self.lastAppliedRevealedCount, layout: pageLayout).height
let newHeight = costMap.revealedContentSize(revealedCount: revealedGlyphCount, layout: pageLayout).height
if prevHeight != newHeight {
requestUpdate = true
}
}
self.pageView?.applyReveal(revealedCount: revealedGlyphCount, costMap: costMap, animated: true)
self.lastAppliedRevealedCount = revealedGlyphCount
if requestUpdate {
self.requestFullUpdate?(ControlledTransition(duration: 0.15, curve: .easeInOut, interactive: false))
}
}
}
}
}
override public func animateInsertion(_ currentTimestamp: Double, duration: Double) {
if let statusNode = self.statusNode, statusNode.alpha != 0.0 {
statusNode.layer.animateAlpha(from: 0.0, to: statusNode.alpha, duration: 0.2)
}
}
override public func animateAdded(_ currentTimestamp: Double, duration: Double) {
if let statusNode = self.statusNode, statusNode.alpha != 0.0 {
statusNode.layer.animateAlpha(from: 0.0, to: statusNode.alpha, duration: 0.2)
}
}
override public func animateRemoved(_ currentTimestamp: Double, duration: Double) {
if let statusNode = self.statusNode, statusNode.alpha != 0.0 {
statusNode.layer.animateAlpha(from: statusNode.alpha, to: 0.0, duration: 0.2, removeOnCompletion: false)
}
}
override public func tapActionAtPoint(_ point: CGPoint, gesture: TapLongTapOrDoubleTapGesture, isEstimating: Bool) -> ChatMessageBubbleContentTapAction {
if case .tap = gesture {
} else {
if let item = self.item, let subject = item.associatedData.subject, case .messageOptions = subject {
return ChatMessageBubbleContentTapAction(content: .none)
}
}
guard let urlHit = self.urlForTapLocation(point) else {
return ChatMessageBubbleContentTapAction(content: .none)
}
let split = self.splitAnchor(urlHit.urlItem.url)
if let webpage = self.currentLoadedWebpage(), webpage.content.url == split.base, let anchor = split.anchor {
return ChatMessageBubbleContentTapAction(content: .custom({ [weak self] in
self?.scrollToAnchor(anchor)
}))
}
// Default to concealed=true: InstantPageTextItem does not expose a clean
// "attribute substring with displayed range" API, so we cannot compare
// displayed text to the resolved URL the way the chat text bubble does.
// The chat URL handler will show a confirmation when concealed is true
// and the visible text differs from the destination safer default.
let concealed = true
let url = ChatMessageBubbleContentTapAction.Url(url: urlHit.urlItem.url, concealed: concealed, allowInlineWebpageResolution: urlHit.urlItem.webpageId != nil)
let rects = self.computeHighlightRects(item: urlHit.item, parentOffset: urlHit.parentOffset, localPoint: urlHit.localPoint)
if let webpageId = urlHit.urlItem.webpageId {
let split = self.splitAnchor(url.url)
return ChatMessageBubbleContentTapAction(
content: .externalInstantPage(url: url, webpageId: webpageId, anchor: split.anchor),
rects: rects,
activate: self.makeActivate(item: urlHit.item, parentOffset: urlHit.parentOffset, localPoint: urlHit.localPoint)
)
} else {
return ChatMessageBubbleContentTapAction(
content: .url(url),
rects: rects,
activate: self.makeActivate(item: urlHit.item, parentOffset: urlHit.parentOffset, localPoint: urlHit.localPoint)
)
}
}
private func textItemAtLocation(_ location: CGPoint) -> (item: InstantPageTextItem, parentOffset: CGPoint)? {
guard let pageView = self.pageView else { return nil }
let local = self.view.convert(location, to: pageView)
return pageView.textItemAt(point: local)
}
private func urlForTapLocation(_ point: CGPoint) -> (item: InstantPageTextItem, urlItem: InstantPageUrlItem, parentOffset: CGPoint, localPoint: CGPoint)? {
guard let pageView = self.pageView else { return nil }
let local = self.view.convert(point, to: pageView)
return pageView.urlItemAt(point: local).map {
(item: $0.item, urlItem: $0.urlItem, parentOffset: $0.parentOffset, localPoint: $0.localPoint)
}
}
/// Bridges an InstantPageUrlItem (used by the gallery's caption URL handler) to the
/// chat layer's URL handler. `concealed: true` matches `tapActionAtPoint` for the same
/// reason: V2 cannot reliably compare displayed link text to the resolved URL.
private func openInstantPageUrl(_ url: InstantPageUrlItem) {
guard let item = self.item else { return }
item.controllerInteraction.openUrl(ChatControllerInteraction.OpenUrl(
url: url.url,
concealed: true,
allowInlineWebpageResolution: url.webpageId != nil
))
}
private func computeHighlightRects(item: InstantPageTextItem, parentOffset: CGPoint, localPoint: CGPoint) -> [CGRect] {
// Text item returns rects in its local coords; translate back into containerNode-local coords.
// containerNode is offset by (1, 1) from the bubble-content-node, but the highlight overlay lives
// *inside* containerNode, so we use layout-coords (= containerNode-local) for the rects.
let originX = parentOffset.x
let originY = parentOffset.y
return item.linkSelectionRects(at: localPoint).map { rect in
rect.offsetBy(dx: originX, dy: originY)
}
}
private func makeActivate(item: InstantPageTextItem, parentOffset: CGPoint, localPoint: CGPoint) -> (() -> Promise<Bool>?)? {
return { [weak self, weak item] in
guard let self else {
return nil
}
let promise = Promise<Bool>()
self.linkProgressDisposable?.dispose()
if self.linkProgressRects != nil {
self.linkProgressRects = nil
self.updateLinkProgressState()
}
self.linkProgressDisposable = (promise.get() |> deliverOnMainQueue).startStrict(next: { [weak self] value in
guard let self else {
return
}
let updated: [CGRect]?
if value, let item {
updated = self.computeHighlightRects(item: item, parentOffset: parentOffset, localPoint: localPoint)
} else {
updated = nil
}
let changed: Bool
if let lhs = self.linkProgressRects, let rhs = updated {
changed = lhs != rhs
} else {
changed = (self.linkProgressRects == nil) != (updated == nil)
}
if changed {
self.linkProgressRects = updated
self.updateLinkProgressState()
}
})
return promise
}
}
private func updateLinkProgressState() {
guard let messageItem = self.item else {
return
}
if let rects = self.linkProgressRects, !rects.isEmpty {
let linkProgressView: TextLoadingEffectView
if let current = self.linkProgressView {
linkProgressView = current
} else {
linkProgressView = TextLoadingEffectView(frame: CGRect())
self.linkProgressView = linkProgressView
self.containerNode.view.addSubview(linkProgressView)
}
linkProgressView.frame = self.containerNode.bounds
let progressColor: UIColor = messageItem.message.effectivelyIncoming(messageItem.context.account.peerId)
? messageItem.presentationData.theme.theme.chat.message.incoming.linkHighlightColor
: messageItem.presentationData.theme.theme.chat.message.outgoing.linkHighlightColor
linkProgressView.update(color: progressColor, size: self.containerNode.bounds.size, rects: rects)
} else if let linkProgressView = self.linkProgressView {
self.linkProgressView = nil
linkProgressView.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.2, removeOnCompletion: false, completion: { [weak linkProgressView] _ in
linkProgressView?.removeFromSuperview()
})
}
}
override public func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
if let statusNode = self.statusNode, statusNode.supernode != nil, let result = statusNode.hitTest(self.view.convert(point, to: statusNode.view), with: event) {
return result
}
return super.hitTest(point, with: event)
}
override public func updateTouchesAtPoint(_ point: CGPoint?) {
guard let messageItem = self.item else {
return
}
var rects: [CGRect]?
if let point, let urlHit = self.urlForTapLocation(point) {
rects = self.computeHighlightRects(item: urlHit.item, parentOffset: urlHit.parentOffset, localPoint: urlHit.localPoint)
}
if let rects, !rects.isEmpty {
let highlightingNode: LinkHighlightingNode
if let current = self.linkHighlightingNode {
highlightingNode = current
} else {
let color: UIColor = messageItem.message.effectivelyIncoming(messageItem.context.account.peerId)
? messageItem.presentationData.theme.theme.chat.message.incoming.linkHighlightColor
: messageItem.presentationData.theme.theme.chat.message.outgoing.linkHighlightColor
highlightingNode = LinkHighlightingNode(color: color)
highlightingNode.useModernPathCalculation = true
self.linkHighlightingNode = highlightingNode
self.containerNode.insertSubnode(highlightingNode, at: 0)
}
highlightingNode.frame = self.containerNode.bounds
highlightingNode.updateRects(rects)
} else if let highlightingNode = self.linkHighlightingNode {
self.linkHighlightingNode = nil
highlightingNode.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.18, removeOnCompletion: false, completion: { [weak highlightingNode] _ in
highlightingNode?.removeFromSupernode()
})
}
}
override public func updateSearchTextHighlightState(text: String?, messages: [EngineMessage.Index]?) {
}
override public func willUpdateIsExtractedToContextPreview(_ value: Bool) {
if !value, let textSelectionNode = self.textSelectionNode {
self.textSelectionNode = nil
self.textSelectionAdapter = nil
textSelectionNode.highlightAreaNode.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.2, removeOnCompletion: false)
textSelectionNode.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.2, removeOnCompletion: false, completion: { [weak textSelectionNode] _ in
textSelectionNode?.highlightAreaNode.removeFromSupernode()
textSelectionNode?.removeFromSupernode()
})
}
}
override public func updateIsExtractedToContextPreview(_ value: Bool) {
guard value, self.textSelectionNode == nil, let messageItem = self.item, self.currentPageLayout?.layout != nil, let pageView = self.pageView, let rootNode = messageItem.controllerInteraction.chatControllerNode() else {
return
}
// pageView sits at (-1, 0) inside containerNode; the adapter is placed at
// containerNode.bounds, so shift each item's page-space origin into
// containerNode-local coords for the adapter to operate in.
let pageOrigin = pageView.frame.origin
let entries = pageView.selectableTextItems()
.filter { $0.item.selectable && !$0.item.attributedString.string.isEmpty }
.map { entry in
InstantPageMultiTextAdapter.Entry(
item: entry.item,
frameOrigin: CGPoint(
x: entry.parentOffset.x + pageOrigin.x,
y: entry.parentOffset.y + pageOrigin.y
)
)
}
guard !entries.isEmpty else {
return
}
let adapter = InstantPageMultiTextAdapter(entries: entries)
adapter.frame = self.containerNode.bounds
self.textSelectionAdapter = adapter
self.containerNode.addSubnode(adapter)
let incoming = messageItem.message.effectivelyIncoming(messageItem.context.account.peerId)
let theme = messageItem.presentationData.theme.theme
let selectionColor = incoming ? theme.chat.message.incoming.textSelectionColor : theme.chat.message.outgoing.textSelectionColor
let knobColor = incoming ? theme.chat.message.incoming.textSelectionKnobColor : theme.chat.message.outgoing.textSelectionKnobColor
let textSelectionNode = TextSelectionNode(
theme: TextSelectionTheme(selection: selectionColor, knob: knobColor, isDark: theme.overallDarkAppearance),
strings: messageItem.presentationData.strings,
textNodeOrView: .node(adapter),
updateIsActive: { _ in },
present: { [weak self] c, a in
guard let self, let item = self.item else {
return
}
if let subject = item.associatedData.subject, case let .messageOptions(_, _, info) = subject, case .reply = info {
item.controllerInteraction.presentControllerInCurrent(c, a)
} else {
item.controllerInteraction.presentGlobalOverlayController(c, a)
}
},
rootView: { [weak rootNode] in
return rootNode?.view
},
performAction: { [weak self] text, action in
guard let self, let item = self.item else {
return
}
item.controllerInteraction.performTextSelectionAction(item.message, true, text, nil, action)
}
)
let enableCopy = (!messageItem.associatedData.isCopyProtectionEnabled && !messageItem.message.isCopyProtected()) || messageItem.message.id.peerId.isVerificationCodes
textSelectionNode.enableCopy = enableCopy
var enableOtherActions = true
if let subject = messageItem.associatedData.subject, case let .messageOptions(_, _, info) = subject, case .reply = info {
enableOtherActions = false
}
textSelectionNode.enableQuote = false
textSelectionNode.enableTranslate = enableOtherActions
textSelectionNode.enableShare = enableOtherActions && enableCopy
textSelectionNode.enableLookup = true
textSelectionNode.menuSkipCoordnateConversion = !enableOtherActions
textSelectionNode.frame = self.containerNode.bounds
textSelectionNode.highlightAreaNode.frame = self.containerNode.bounds
self.containerNode.insertSubnode(textSelectionNode.highlightAreaNode, at: 0)
self.containerNode.addSubnode(textSelectionNode)
self.textSelectionNode = textSelectionNode
}
override public func transitionNode(messageId: EngineMessage.Id, media: EngineRawMedia, adjustRect: Bool) -> (ASDisplayNode, CGRect, () -> (UIView?, UIView?))? {
// V2 V0: media items render as gray placeholders; no transition node is exposed.
return nil
}
override public func updateHiddenMedia(_ media: [EngineRawMedia]?) -> Bool {
// V2 V0: media items render as gray placeholders; nothing to hide.
return false
}
override public func getAnchorRect(anchor: String) -> CGRect? {
// V2 V0: anchor resolution lives in the V2 view (text-item anchors). Not yet wired through.
let _ = anchor
return nil
}
override public func reactionTargetView(value: MessageReaction.Reaction) -> UIView? {
if let statusNode = self.statusNode, !statusNode.isHidden {
return statusNode.reactionView(value: value)
}
return nil
}
override public func messageEffectTargetView() -> UIView? {
if let statusNode = self.statusNode, !statusNode.isHidden {
return statusNode.messageEffectTargetView()
}
return nil
}
override public func getStatusNode() -> ASDisplayNode? {
return self.statusNode
}
private func splitAnchor(_ url: String) -> (base: String, anchor: String?) {
if let anchorRange = url.range(of: "#") {
let anchor = String(url[anchorRange.upperBound...]).removingPercentEncoding
let base = String(url[..<anchorRange.lowerBound])
return (base, anchor)
}
return (url, nil)
}
private func currentLoadedWebpage() -> TelegramMediaWebpage? {
return nil // V2 V0: media items are placeholders; no inline webpage resolution.
}
private func scrollToAnchor(_ anchor: String) {
guard let item = self.item else {
return
}
if anchor.isEmpty {
item.controllerInteraction.scrollToMessageId(item.message.index, 0.0)
} else {
item.controllerInteraction.scrollToMessageIdWithAnchor(item.message.index, anchor)
}
}
}