Interactive thread selector screen for /threads command.
Build a full LangSmith thread URL if tracing is configured.
Combines get_langsmith_project_name and fetch_langsmith_project_url
into a single convenience helper.
Get the glyph set for the current charset mode.
Check whether the terminal is in ASCII charset mode.
Convenience wrapper so widgets can branch on charset without importing
both _detect_charset_mode and CharsetMode.
Open the URL from a Rich link style on click, if present.
Rich Style(link=...) embeds OSC 8 terminal hyperlinks, but Textual's
mouse capture intercepts normal clicks before the terminal can act on them.
By handling the Textual click event directly we open the URL with a single
click, matching the behavior of links in the Markdown widget.
URLs that fail the safety check (e.g. containing hidden Unicode or homograph domains) are blocked and not opened; the event bubbles and a warning is logged and displayed as a Textual notification.
On success the event is stopped so it does not bubble further. On failure (e.g. no browser available in a headless environment) the error is logged at debug level and the event bubbles normally.
Thread metadata returned by list_threads.
A clickable thread option in the selector.
Emit scroll changes so the parent can refresh the overflow indicator.
Confirmation modal shown before deleting a thread.
Scope dropdown overlay that consumes option navigation while focused.
Scope dropdown that keeps focus contained while its menu is open.
Modal dialog for browsing and resuming threads.
Displays recent threads with keyboard navigation, fuzzy search, configurable columns, and delete support.
Returns a thread_id string on selection, or None on cancel.
LangChain brand colors and semantic constants for the app.
Single source of truth for color values used in Python code (Rich markup,
Content.styled, Content.from_markup). CSS-side styling should reference
Textual CSS variables: built-in variables
($primary, $background, $text-muted, $error-muted, etc.) are set via
register_theme() in DeepAgentsApp.__init__, while the few app-specific
variables ($mode-bash, $mode-command, $mode-incognito, $skill,
$skill-hover, $tool, $tool-hover) are backed by these constants via
App.get_theme_variable_defaults().
Code that needs custom CSS variable values should call
get_css_variable_defaults(dark=...). For the full semantic color palette, look
up the ThemeColors instance via get_registry().
Users can define custom themes in ~/.deepagents/config.toml under
[themes.<name>] sections. Each new theme section must include label (str);
dark (bool) defaults to False if omitted (set to True for dark themes).
Color fields are optional and fall back to the built-in dark/light palette based
on the dark flag. Sections whose name matches a built-in theme override its
colors without replacing it. See _load_user_themes() for details.
