Telegram-iOS/submodules/TelegramUI/Components/Chat/ChatMessageRichDataBubbleContentNode/Sources/ChatMessageRichDataBubbleContentNode.swift
isaac a731f8bdc0 Implement textDate autoformatter for InstantPage V2 rich bubbles
Render RichText.textDate (API constructor textDate(flags, text, date)) as a
locale/timezone-correct, relative-aware, tappable date inside V2 rich-message
bubbles, reusing the existing stringForEntityFormattedDate autoformatter.

- Model: add RichText.textDate(text📅format:) with Postbox coding,
  FlatBuffers schema (RichText.fbs; flatc regenerates), Equatable and plainText;
  parse flags->DateTimeFormat? at the API boundary (flags==0 => nil, matching
  the messageEntityFormattedDate convention) with a symmetric apiRichText()
  round-trip. The new case is handled in every exhaustive RichText switch
  (SyncCore, ApiUtils, InstantPageTextItem, InstantPageAnchorPath,
  InstantPagePreviewText, BrowserReadability, BrowserMarkdown).
- Render: attributedStringForRichText gains an optional formatDate closure;
  the V2 layout builds it from the message's strings/dateTimeFormat and threads
  it to every text-building call site, formatting the timestamp and tagging the
  run with TelegramTextAttributes.Date.
- Tappable: the Date attribute is added to linkSelectionRects hit-testing and
  mapped in the rich bubble's entityTapContent to the existing .date tap action
  (opens the date context menu).
- Live update: the V2 layout accumulates a page-wide formattedDateUpdatePeriod
  (>=10s) for relative dates; the rich bubble schedules a refresh timer on it,
  recreating it only when the period changes. The currentPageLayout cache is
  bypassed for relative-date pages so the timer-driven relayout actually
  re-formats the date.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-04 13:45:48 +02:00

1336 lines
75 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 TextFormat
import TelegramUIPreferences
import TextLoadingEffect
import TextSelectionNode
import StreamingTextReveal
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] = [:]
// Intra-message anchor scroll that is waiting on a collapsed <details> to expand + relayout.
private var pendingScrollAnchor: String?
// Progress guard: the details index expanded on the previous pending pass.
private var lastExpandedPendingDetailsIndex: Int?
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 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
private var displayContentsUnderSpoilers: Bool = false
private var relativeDateTimer: (timer: SwiftSignalKit.Timer, period: Int32)?
override public var visibility: ListViewItemNodeVisibility {
didSet {
if oldValue != self.visibility {
self.updatePageViewVisibilityRect()
}
}
}
// Pushes the current `visibility` sub-rect into `pageView.visibilityRect`, translated into the
// page view's coordinate space (the page view sits at the top of the bubble; no header offset).
// Re-invoked from the apply closure after `pageView.frame` is set, because the pageView's
// y-origin and size can change across streamed chunks (content growth) without a `visibility`
// change, which would otherwise leave the animation-gating rect stale.
private func updatePageViewVisibilityRect() {
guard let pageView = self.pageView else {
return
}
switch self.visibility {
case .none:
pageView.visibilityRect = nil
case let .visible(_, subRect):
var rect = subRect
rect.origin.x = 0.0
rect.size.width = 10000.0
rect.origin.y -= pageView.frame.minY
pageView.visibilityRect = rect
}
}
required public init() {
self.containerNode = ContainerNode()
self.containerNode.clipsToBounds = true
super.init()
self.addSubnode(self.containerNode)
}
/// Builds (or reuses) the V2View. Same-message stableVersion bumps (streamed AI chunks) reuse
/// the existing view, updating only the webpage content in place. The view is rebuilt only when
/// the bubble is recycled with a different message/webpage (different message id).
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 {
if current.stableVersion == key.stableVersion {
return existing
}
// Same message, new chunk: reuse the view. Update only the content-bearing webpage on
// the existing render context; the subsequent pageView.update(layout:) call diffs item
// views by stable id (content blocks keep their ids, so their views and in-flight
// reveal state persist; only added/removed blocks change). This replaces the old
// wholesale rebuild and eliminates the per-chunk full-text-then-mask flash.
existing.renderContext?.updateContent(webpage: webpage)
self.pageViewMessageKey = key
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()
},
message: messageReference
)
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, false, 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()
self.relativeDateTimer?.timer.invalidate()
}
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 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
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?
// Horizontal text inset baked into the InstantPage layout. The pageView sits at
// self-x 0 (containerNode at 1, pageView at -1 inside it), so the page's text
// left edge in the status node's coordinate space is exactly this value. Used as
// the status node's left edge + side inset, mirroring TextBubble's bubbleInsets.
let pageHorizontalInset: CGFloat = 11.0
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 codeBlockBackgroundColor: UIColor
let codeBlockTitleColor: UIColor
let codeBlockAccentColor: 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)
} 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
codeBlockBackgroundColor = mainColor.withMultipliedAlpha(0.1)
}
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: 19.0, lineSpacingFactor: 0.685), color: messageTheme.primaryTextColor),
subheader: InstantPageTextAttributes(font: InstantPageFont(style: .serif, size: 18.0, 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),
codeBlock: InstantPageTextAttributes(font: InstantPageFont(style: .monospace, size: 14.0, 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),
separatorColor: messageTheme.secondaryTextColor.mixedWith(mainColor.withMultipliedAlpha(0.2), alpha: 0.3),
secondaryControlColor: messageTheme.secondaryTextColor.mixedWith(mainColor.withMultipliedAlpha(0.2), alpha: 0.3)
)
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 {
#if DEBUG && false
let instantPage = InstantPage(blocks: [.thinking(.concat([
.textCustomEmoji(fileId: 5384559872899555845, alt: "a"),
.plain("Thinking...")
]))], media: [:], isComplete: true, rtl: false, url: "", views: nil)
#else
let instantPage = attribute.instantPage
#endif
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: 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,
current.layout.formattedDateUpdatePeriod == nil {
// Reuse the cached layout only when it has no relative `textDate`. A relative
// date's formatted string ("N minutes ago") is baked into the laid-out text at
// layout time, and none of the cache-key inputs change as wall-clock advances
// so reusing it would freeze the date and defeat the refresh timer (which fires
// `requestFullUpdate` precisely to re-run `layoutInstantPageV2` `formatDate`).
// Forcing a recompute for relative-date pages keeps the timer's tick visible.
pageLayout = current.layout
} else {
#if DEBUG && false
let instantPage = InstantPage(blocks: [.thinking(.concat([
.textCustomEmoji(fileId: 5384559872899555845, alt: "a"),
.plain("Thinking...")
]))], media: [:], isComplete: true, rtl: false, url: "", views: nil)
#else
let instantPage = attribute.instantPage
#endif
pageLayout = layoutInstantPageV2(
webpage: webpage,
instantPage: instantPage,
userLocation: .other,
boundingWidth: suggestedBoundingWidth - 2.0,
horizontalInset: pageHorizontalInset,
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
}
// The hardcoded "Thinking" header was removed in favor of server-sent
// InstantPageBlock.thinking blocks (rendered inside the pageView). There is no
// header strip anymore, so the page content starts at the top of the bubble.
let streamingHeaderOffset: CGFloat = 0.0
if hasDraft {
// The bubble's bottom inset is supplied by the `statusBottomEdge + 6.0`
// max() in the measure closure below but that branch is gated by
// `!hasDraft`, so during streaming the bubble has only its 1pt bottom rim
// past `revealedContentSize.height` (= bounds.maxY + closingPad). Without
// this, descenders of the last revealed line sit cramped against the
// bubble's bottom edge and the bubble visibly grows by 6pt when streaming
// ends and the status node fades in. 6pt matches the constant inside the
// status max() (which itself tracks `TextBubble`'s `bubbleInsets.bottom`).
// `hadDraft && !hasDraft` (the finalize pass) doesn't need this because
// `!hasDraft` re-enables the status max(), which supplies the inset for it.
boundingSize.height += 6.0
}
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 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
}
// Only trail the status inline with the last text line when the bottom-most page
// item is itself a text item; otherwise (table/image/etc. last) the status falls
// through to the contentSize.height anchor and sits below all content.
let lastTextLine = pageLayout.flatMap(InstantPageUI.lastTextLineFrameIfLastItemIsText(in:))
let lastTextLineFrame: CGRect? = lastTextLine?.frame
// Baseline visible-text-bottom compensation. Applied whether the date trails on
// the last line or wraps onto its own line below it (0 for attachment-inflated lines,
// whose maxY already sits at the visible bottom).
let lastTextLineTrailingPadding: CGFloat = lastTextLine?.trailingBottomPadding ?? 0.0
var statusSuggestedWidthAndContinue: (CGFloat, (CGFloat) -> (CGSize, (ListViewItemUpdateAnimation) -> ChatMessageDateAndStatusNode))?
if let statusType = statusType {
var isReplyThread = false
if case .replyThread = item.chatLocation {
isReplyThread = true
}
// Measure trailing extent from the line's actual visible RIGHT EDGE (after
// alignment, in page coords) not just its intrinsic width. A right-aligned
// or RTL last line has `lineWidth` worth of glyphs but sits all the way at
// the right text inset (lineFrame.maxX == text.frame.minX + textItem.width).
// Feeding the status node just `lineWidth` would let the trail/wrap decision
// place the date inline with the line on top of it. `pageHorizontalInset`
// is the offset between page-coords and status-node-local coords (the status
// node sits at x=pageHorizontalInset in self, and pageView sits at self-x 0).
let trailingWidthToMeasure: CGFloat = lastTextLineFrame.map { $0.maxX - pageHorizontalInset } ?? 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 {
// Mirrors TextBubble: max(contentWidth, statusWidth + sideInsets), where
// sideInsets = left + right text inset (= pageHorizontalInset on each side).
boundingSize.width = max(boundingSize.width, statusSuggestedWidthAndContinue.0 + pageHorizontalInset * 2.0)
}
return (boundingSize.width, { boundingWidth in
// Mirrors TextBubble's `boundingWidth - sideInsets` so the right-aligned date
// lands at the right text inset rather than past the bubble's right edge.
let statusSizeAndApply = statusSuggestedWidthAndContinue?.1(boundingWidth - pageHorizontalInset * 2.0)
if let statusSizeAndApply, !hasDraft {
// Status node anchor Y in the content node's space mirrors the apply
// closure below.
let statusAnchorY: CGFloat
if let lastTextLineFrame {
// The renderer draws the baseline at the line frame's maxY, so the
// visible text sits `trailingBottomPadding` below it. Apply that pad
// whether the date trails on the line OR wraps onto its own line below:
// in both cases the date should reference the visible text bottom, not
// the baseline (mirrors TextBubble, whose status anchors at the text
// frame's maxY). Without it the wrapped date crowded the last line.
statusAnchorY = 1.0 + lastTextLineFrame.maxY + lastTextLineTrailingPadding + streamingHeaderOffset
} else if let pageLayout {
statusAnchorY = 1.0 + pageLayout.contentSize.height + streamingHeaderOffset
} else {
statusAnchorY = 1.0 + streamingHeaderOffset
}
// Date's bottom edge: a trailing date sits ~1pt below the anchor; a wrapped
// date extends `statusHeight` below it. Leave ~6pt to the bubble's bottom
// edge, matching TextBubble's bottom inset.
let statusBottomEdge = statusAnchorY + max(1.0, statusSizeAndApply.0.height)
boundingSize.height = max(boundingSize.height, statusBottomEdge + 6.0)
}
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)
self.containerNode.cornerRadius = layoutConstants.image.defaultCornerRadius
if let statusSizeAndApply {
// Match TextBubble: anchor the status node's x at the fixed text-block
// left edge (not the last line's minX, which is large for nested
// content and shoves the right-aligned date off the bubble). The status
// node positions the date trailing/below relative to this origin.
let statusFrameY: CGFloat
if let lastTextLineFrame {
// Apply the text-rect pad (baseline visible text bottom) for both
// the trailing and wrapped cases, so the date references the visible
// text bottom rather than the baseline. Mirrors the measure closure
// and TextBubble. Without it the wrapped date crowded the last line.
statusFrameY = 1.0 + lastTextLineFrame.maxY + lastTextLineTrailingPadding
} else if let pageLayout {
statusFrameY = 1.0 + pageLayout.contentSize.height
} else {
statusFrameY = 1.0
}
let statusFrame = CGRect(origin: CGPoint(x: pageHorizontalInset, 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
)
self.updatePageViewVisibilityRect()
if self.displayContentsUnderSpoilers {
pageView.setDisplayContentsUnderSpoilers(true, atLocation: nil, animated: false)
}
// Continue an in-flight anchor scroll that is waiting on a <details>
// expansion to re-lay-out. This runs on EVERY apply pass (not only the
// expand-triggered one), but only does anything while a scroll is pending
// and scrollToAnchor is idempotent: each invocation either resolves and
// scrolls (clearing pending) or expands the next collapsed level, and the
// progress guard guarantees termination. So an unrelated relayout (theme,
// width, reactions) that lands mid-expand simply advances/no-ops the loop.
// Deferred via justDispatch to avoid re-entering layout from this apply.
if let pendingAnchor = self.pendingScrollAnchor {
Queue.mainQueue().justDispatch { [weak self] in
guard let self, self.pendingScrollAnchor == pendingAnchor else {
return
}
self.scrollToAnchor(pendingAnchor)
}
}
} else {
self.currentPageLayout = nil
self.pageView?.update(
layout: InstantPageV2Layout(contentSize: .zero, items: [], detailsIndices: []),
theme: pageTheme,
animation: animation
)
self.pageViewMessageKey = nil
}
if let formattedDateUpdatePeriod = pageLayout?.formattedDateUpdatePeriod {
// Recreate the timer only when the period changes unlike the TextBubble
// reference (ChatMessageTextBubbleContentNode), which rebuilds it every apply.
// The timer fires `requestFullUpdate`, which relays out and re-enters here; at
// a steady period this guard is false, so the running timer keeps its schedule
// instead of being reallocated (no per-apply churn, no firing-phase reset, no
// self-trigger loop). Do not "simplify" this to match the reference.
if self.relativeDateTimer?.period != formattedDateUpdatePeriod {
self.relativeDateTimer?.timer.invalidate()
let timer = SwiftSignalKit.Timer(timeout: Double(formattedDateUpdatePeriod), repeat: true, completion: { [weak self] in
self?.requestFullUpdate?(ControlledTransition(duration: 0.15, curve: .easeInOut, interactive: false))
}, queue: Queue.mainQueue())
self.relativeDateTimer = (timer, formattedDateUpdatePeriod)
timer.start()
}
} else if let (timer, _) = self.relativeDateTimer {
self.relativeDateTimer = nil
timer.invalidate()
}
// === 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. Keep the previous map
// alive while a reveal/finalize is still in flight: on a post-
// streaming pass (hasDraft && hadDraft both false) revealCostMap is
// nil, and clobbering it would strand the display-link tick (whose
// guard requires a cost map), aborting the finalize before it can
// clear the mask and restore the status alpha.
if let revealCostMap {
self.currentRevealCostMap = revealCostMap
} else if self.textRevealController == nil {
self.currentRevealCostMap = nil
}
// 2. 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 (possibly freshly rebuilt) V2 view to the reveal cursor's
// current position so we don't flash full text. Use the live controller
// count rather than `previousAnimateGlyphCount`, which is nil and would
// reset the reveal to 0 on post-streaming finalize passes where the
// controller is still animating.
let seedCount = self.textRevealController?.currentGlyphCount ?? previousAnimateGlyphCount ?? 0
self.pageView?.applyReveal(revealedCount: seedCount,
costMap: self.currentRevealCostMap,
animated: false)
self.lastAppliedRevealedCount = seedCount
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
// The cursor already caught up at finalize time, so the display-link `isComplete`
// branch (which normally restores the status alpha) will never run. Restore it
// here too, mirroring that branch.
if let item = self.item, 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)
}
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)
}
}
if case .tap = gesture, !self.displayContentsUnderSpoilers, let entityHit = self.entityForTapLocation(point), entityHit.attributes[NSAttributedString.Key(rawValue: TelegramTextAttributes.Spoiler)] != nil {
return ChatMessageBubbleContentTapAction(content: .custom({ [weak self] in
self?.revealSpoilers(atContentPoint: point)
}))
}
guard let urlHit = self.urlForTapLocation(point) else {
if let entityHit = self.entityForTapLocation(point), let content = self.entityTapContent(entityHit.attributes) {
let rects = self.computeHighlightRects(item: entityHit.item, parentOffset: entityHit.parentOffset, localPoint: entityHit.localPoint)
return ChatMessageBubbleContentTapAction(
content: content,
rects: rects,
activate: self.makeActivate(item: entityHit.item, parentOffset: entityHit.parentOffset, localPoint: entityHit.localPoint)
)
}
return ChatMessageBubbleContentTapAction(content: .none)
}
let split = self.splitAnchor(urlHit.urlItem.url)
if split.base.isEmpty, let anchor = split.anchor {
// Don't accept intra-message anchor taps while the message is still streaming.
if let item = self.item, item.message.attributes.contains(where: { $0 is TypingDraftMessageAttribute }) {
return ChatMessageBubbleContentTapAction(content: .none)
}
let rects = self.computeHighlightRects(item: urlHit.item, parentOffset: urlHit.parentOffset, localPoint: urlHit.localPoint)
return ChatMessageBubbleContentTapAction(content: .custom({ [weak self] in
self?.scrollToAnchor(anchor)
}), rects: rects)
}
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: $0.localPoint)
}
}
private func entityForTapLocation(_ point: CGPoint) -> (item: InstantPageTextItem, parentOffset: CGPoint, localPoint: CGPoint, attributes: [NSAttributedString.Key: Any])? {
guard let pageView = self.pageView else { return nil }
let local = self.view.convert(point, to: pageView)
guard let hit = pageView.textItemAt(point: local) else { return nil }
let localPoint = CGPoint(x: local.x - hit.parentOffset.x, y: local.y - hit.parentOffset.y)
guard let (_, attributes) = hit.item.attributesAtPoint(localPoint, orNearest: false) else { return nil }
return (item: hit.item, parentOffset: hit.parentOffset, localPoint: localPoint, attributes: attributes)
}
private func revealSpoilers(atContentPoint point: CGPoint) {
guard !self.displayContentsUnderSpoilers, let pageView = self.pageView else {
return
}
self.displayContentsUnderSpoilers = true
let local = self.view.convert(point, to: pageView)
pageView.setDisplayContentsUnderSpoilers(true, atLocation: local, animated: true)
}
private func entityTapContent(_ attributes: [NSAttributedString.Key: Any]) -> ChatMessageBubbleContentTapAction.Content? {
if let mention = attributes[NSAttributedString.Key(rawValue: TelegramTextAttributes.PeerMention)] as? TelegramPeerMention {
return .peerMention(peerId: mention.peerId, mention: mention.mention, openProfile: false)
} else if let peerName = attributes[NSAttributedString.Key(rawValue: TelegramTextAttributes.PeerTextMention)] as? String {
return .textMention(peerName)
} else if let botCommand = attributes[NSAttributedString.Key(rawValue: TelegramTextAttributes.BotCommand)] as? String {
return .botCommand(botCommand)
} else if let hashtag = attributes[NSAttributedString.Key(rawValue: TelegramTextAttributes.Hashtag)] as? TelegramHashtag {
// Cashtags are carried as a Hashtag attribute (no dedicated cashtag key/tap-action exists);
// the leading "$" in the string distinguishes them, and the chat hashtag handler searches both.
return .hashtag(hashtag.peerName, hashtag.hashtag)
} else if let bankCard = attributes[NSAttributedString.Key(rawValue: TelegramTextAttributes.BankCard)] as? String {
return .bankCard(bankCard)
} else if let date = attributes[NSAttributedString.Key(rawValue: TelegramTextAttributes.Date)] as? Int32 {
// The displayed string is unused downstream (ChatMessageBubbleItemNode matches `.date(date, _)`).
return .date(date, "")
}
return nil
}
/// 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 {
if let urlHit = self.urlForTapLocation(point) {
rects = self.computeHighlightRects(item: urlHit.item, parentOffset: urlHit.parentOffset, localPoint: urlHit.localPoint)
} else if let entityHit = self.entityForTapLocation(point), self.entityTapContent(entityHit.attributes) != nil {
rects = self.computeHighlightRects(item: entityHit.item, parentOffset: entityHit.parentOffset, localPoint: entityHit.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
}
if case .copy = action,
let range = self.textSelectionNode?.getSelection(),
range.length > 0,
let adapter = self.textSelectionAdapter {
let markdown = adapter.markdownForRange(range)
if !markdown.isEmpty {
item.controllerInteraction.performTextSelectionAction(item.message, true, NSAttributedString(string: markdown), nil, .copy)
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? {
guard let pageView = self.pageView, let rect = pageView.anchorFrame(name: anchor) else {
return nil
}
// Small top breathing room so the target isn't flush against the content-area top
// (cf. V1 InstantPageControllerNode's -10 offset). The chat scroll consumes only the
// returned rect's minY (ChatController's scrollToMessageIdWithAnchor .bottom(anchorY)),
// so pulling minY up by the margin is what lands the anchor below the top edge; the rect
// is grown to keep maxY stable should a future caller use the full rect (e.g. a highlight).
let topMargin: CGFloat = 8.0
let adjusted = CGRect(x: rect.minX, y: max(0.0, rect.minY - topMargin), width: rect.width, height: rect.height + topMargin)
return self.view.convert(adjusted, from: pageView)
}
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
}
// Empty fragment ("#") is a no-op.
if anchor.isEmpty {
self.clearPendingScroll()
return
}
// 1. Anchor is in the currently laid-out content scroll now.
if self.pageView?.anchorFrame(name: anchor) != nil {
self.clearPendingScroll()
item.controllerInteraction.scrollToMessageIdWithAnchor(item.message.index, anchor)
return
}
// 2. Not laid out it may be buried in a collapsed <details>. Find the path and expand
// the first collapsed details on it, then retry after the relayout (post-relayout hook).
guard let instantPage = item.message.richText?.instantPage,
let path = instantPageAnchorPath(in: instantPage, name: anchor),
!path.isEmpty,
let collapsedIndex = self.pageView?.firstCollapsedDetails(forOrdinalPath: path)
else {
self.clearPendingScroll()
return
}
// Progress guard: if expanding this same index last pass didn't move us forward, stop.
if self.lastExpandedPendingDetailsIndex == collapsedIndex {
self.clearPendingScroll()
return
}
self.currentExpandedDetails[collapsedIndex] = true
self.pendingScrollAnchor = anchor
self.lastExpandedPendingDetailsIndex = collapsedIndex
item.controllerInteraction.requestMessageUpdate(item.message.id, false, nil)
}
private func clearPendingScroll() {
self.pendingScrollAnchor = nil
self.lastExpandedPendingDetailsIndex = nil
}
}