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//! The empty-world placeholder + bootstrap composer (§3.4, STORIES S0) — the
//! center panel's other half, painted when no workspace is focused at all.
//! A separate surface from [`super::workspace`]'s conversation view: it has no
//! conversation, no inspector and no bottom composer to defer to, so it carries
//! its own box and its own Enter, both riding the one planner (`super::fire`).
//! Coverage-excluded glue like the rest of `src/shell/*`.
use crate::AppModel;
use crate::actions::DraftKey;
use super::ShellState;
/// The gap that keeps the §3.3 name prediction from reading as the tail of the
/// tagline (bl-fb1c) — a line's worth of air between two lines that are not
/// one sentence.
pub(crate) const SAID_APART: f32 = 8.0;
/// The empty world's one box and its Start (§3.4): both say the whole gesture,
/// because founding the first workspace is invisible until it has happened.
const BOOTSTRAP_HINT: &str = "Say what you want done. This founds your first workspace (`home`) and starts \
the conversation in it — there is nothing else to set up first. Enter fires it; \
the keyboard is already here.";
/// The empty-world placeholder + bootstrap composer (§3.4, STORIES S0): the
/// wordmark, the greyed name prediction (the conversation the Enter will mint
/// and pass via `--name`, §3.3), and one box whose Enter runs the bare-rung bootstrap —
/// `lernie new <names-root>/home` (§3.1's default name) and the detached prompt —
/// through the same planner. No wizard, no dead end, and no name picker.
pub(super) fn render(ui: &mut egui::Ui, model: &mut AppModel, state: &mut ShellState) {
// The preview's own read of the held seed (§3.3); the fire below reads —
// and retires — it through [`ShellState`] itself (bl-28ba), so the
// prediction and the stamp still come off one fact.
let seed = state.start.mint_seed;
ui.vertical_centered(|ui| {
crate::theme::wordmark(ui);
ui.weak(crate::theme::TAGLINE);
// The prediction is not the rest of the tagline (bl-fb1c). Two `ui.weak`
// runs in the same size and colour on adjacent lines read as one
// wrapped sentence — "the key and the gate will be named growing" —
// so the line that says what the *Enter* would mint is set apart from
// the line that says what yog is: a gap, and italics.
ui.add_space(SAID_APART);
let inputs = model.start_bare_inputs();
ui.weak(
egui::RichText::new(
crate::start::preview(&inputs, &lernie::mint::SplitMix64::from_seed(seed)).preview,
)
.italics(),
);
});
// The empty world's own draft key (bl-a69a): a new conversation with no
// workspace yet — the general [`DraftKey::composer`] case with the workspace
// absent, so this box does not share a buffer with any workspace's composer.
let key = DraftKey::composer(None, None);
let text = state.actions.drafts.text(&key);
let mut buffer = text.clone();
// Stack the composer vertically (STORIES S0 step 1): invitation, full-width
// box, then a visible Start — so it fits altitude-1 at the 900px default
// window instead of running off-screen in one horizontal row.
ui.label("start a conversation:");
let edit = ui
.add(
egui::TextEdit::singleline(&mut buffer)
.desired_width(f32::INFINITY)
.hint_text("say what you want done"),
)
.on_hover_text(BOOTSTRAP_HINT);
// Open focused, through the one §11 mechanism (`super::focus`): the launch
// request stands from `ShellState::new`, so the empty world's first frame
// takes the keyboard with no bootstrap-only memory flag of its own.
state.actions.drafts.set(key.clone(), buffer);
super::focus::take(state, ui, &edit);
// Enter (lost_focus + Enter) or the Start button both ride the same bare-rung
// fire (§3.4); the draft clears only on a clean send.
// No work-directory field on this surface — the bootstrap is the bare rung
// only (§3.4), so the empty string is the honest answer to "where", not a
// missing check: `work_dir_refusal` reads it as the bare rung and passes.
let submit_enabled = crate::actions::new_prompt_enabled(&text, "");
let entered = edit.lost_focus() && ui.input(|i| i.key_pressed(egui::Key::Enter));
let clicked = ui
.add_enabled(submit_enabled, egui::Button::new("Start"))
.on_hover_text(BOOTSTRAP_HINT)
.on_disabled_hover_text("type what you want done first — there is nothing to start yet")
.clicked();
if submit_enabled && (clicked || entered) {
// A send keeps the keyboard (§11 focus discipline), asked on the
// attempt: a bootstrap that fails banners below, and the operator's
// retry is a keystroke away rather than a click.
super::focus::request(state);
// The box empties when the launch lands, not when it is asked for
// (§5.3, REMOTE §9.8): the draft rides the ticket this post holds.
super::fire::fire_bare(model, state, &key, &text);
}
// Per-frame, from the model (§7.3, bl-4895) — the bootstrap's first prompt is
// exactly the one whose driver most often dies on a stale config.
//
// The same `Origin::Conversation` the docked composer reads (bl-48f8), and
// that is not a duplicate: this box **is** the composer before a workspace
// exists — the general `DraftKey::composer(None, None)` case, on the one
// surface, and the two never paint in the same frame (this renders only when
// nothing is focused, which is exactly when the composer is withheld).
if let Some(failure) = model.last_failure(crate::opslog::Origin::Conversation) {
super::banner::failure_banner(ui, model, state, &failure);
}
}