Class AppMessage

libs/code/deepagents_code/widgets/messages.py:3140–3197

Widget displaying an app message.

class AppMessage(Static):
    """Widget displaying an app message."""

    # Disable Textual's auto_links to prevent a flicker cycle: Style.__add__
    # calls .copy() for linked styles, generating a fresh random _link_id on
    # each render. This means highlight_link_id never stabilizes, causing an
    # infinite hover-refresh loop.
    auto_links = False

    DEFAULT_CSS = """
    AppMessage {
        height: auto;
        padding: 0 1;
        margin: 0 0 1 0;
        color: $text-muted;
        text-style: italic;
        pointer: text;
    }
    """

    def __init__(
        self,
        message: str | Content,
        *,
        markdown: bool = False,
        **kwargs: Any,
    ) -> None:
        """Initialize a system message.

        Args:
            message: The system message as a string or pre-styled `Content`.
            markdown: When `True`, render `message` as markdown via Rich's
                markdown renderer (tables, headings, bold, etc.).

                Requires a string message — `Content` objects already carry
                their own structure.
            **kwargs: Additional arguments passed to parent.

        Raises:
            TypeError: If `markdown=True` is combined with a non-string
                `message`.
        """
        self._content = message
        self._is_markdown = markdown
        if markdown:
            if not isinstance(message, str):
                msg = "AppMessage(markdown=True) requires a string message"
                raise TypeError(msg)
            rendered = _MutedRichMarkdown(message)
        elif isinstance(message, Content):
            rendered = message
        else:
            rendered = Content.styled(message, "dim italic")
        super().__init__(rendered, **kwargs)

    def on_click(self, event: Click) -> None:  # noqa: PLR6301  # Textual event handler
        """Open style-embedded hyperlinks on single click."""
        open_style_link(event)