Function MessagesImpl

src/components/Messages.tsx:341–721

({
  messages,
  tools,
  commands,
  verbose,
  toolJSX,
  toolUseConfirmQueue,
  inProgressToolUseIDs,
  isMessageSelectorVisible,
  conversationId,
  screen,
  streamingToolUses,
  showAllInTranscript = false,
  agentDefinitions,
  onOpenRateLimitOptions,
  hideLogo = false,
  isLoading,
  hidePastThinking = false,
  streamingThinking,
  streamingText,
  isBriefOnly = false,
  unseenDivider,
  scrollRef,
  trackStickyPrompt,
  jumpRef,
  onSearchMatchesChange,
  scanElement,
  setPositions,
  disableRenderCap = false,
  cursor = null,
  setCursor,
  cursorNavRef,
  renderRange
}: Props)

  return start;
}
const MessagesImpl = ({
  messages,
  tools,
  commands,
  verbose,
  toolJSX,
  toolUseConfirmQueue,
  inProgressToolUseIDs,
  isMessageSelectorVisible,
  conversationId,
  screen,
  streamingToolUses,
  showAllInTranscript = false,
  agentDefinitions,
  onOpenRateLimitOptions,
  hideLogo = false,
  isLoading,
  hidePastThinking = false,
  streamingThinking,
  streamingText,
  isBriefOnly = false,
  unseenDivider,
  scrollRef,
  trackStickyPrompt,
  jumpRef,
  onSearchMatchesChange,
  scanElement,
  setPositions,
  disableRenderCap = false,
  cursor = null,
  setCursor,
  cursorNavRef,
  renderRange
}: Props): React.ReactNode => {
  const {
    columns
  } = useTerminalSize();
  const toggleShowAllShortcut = useShortcutDisplay('transcript:toggleShowAll', 'Transcript', 'Ctrl+E');
  const normalizedMessages = useMemo(() => normalizeMessages(messages).filter(isNotEmptyMessage), [messages]);

  // Check if streaming thinking should be visible (streaming or within 30s timeout)
  const isStreamingThinkingVisible = useMemo(() => {
    if (!streamingThinking) return false;
    if (streamingThinking.isStreaming) return true;
    if (streamingThinking.streamingEndedAt) {
      return Date.now() - streamingThinking.streamingEndedAt < 30000;
    }
    return false;
  }, [streamingThinking]);

  // Find the last thinking block (message UUID + content index) for hiding past thinking in transcript mode
  // When streaming thinking is visible, use a special ID that won't match any completed thinking block
  // With adaptive thinking, only consider thinking blocks from the current turn and stop searching once we
  // hit the last user message.
  const lastThinkingBlockId = useMemo(() => {
    if (!hidePastThinking) return null;
    // If streaming thinking is visible, hide all completed thinking blocks by using a non-matching ID
    if (isStreamingThinkingVisible) return 'streaming';