Progress

Copy this

<div class="hm-stack hm-measure">
  <div class="progress" role="progressbar" aria-label="Storage used" aria-valuenow="62" aria-valuemin="0" aria-valuemax="100">
    <div class="progress__bar" style="--progress-value:62%"></div>
  </div>
  <div class="progress" data-tone="success" role="progressbar" aria-label="Upload progress" aria-valuenow="100" aria-valuemin="0" aria-valuemax="100">
    <div class="progress__bar" style="--progress-value:100%"></div>
  </div>
</div>

Server exchange

This Hyperpart has no server exchange — it is presentation or client chrome only. htmx does not issue a request on this part's behalf. If you put an affordance (hx-*) on a control that uses this markup, that action's exchange belongs to the action, not this part. See Swap contract for host-owned envelopes.

Swap contract

Agent-visible HTMX topology (ADR-0054 / decision 0012). exchange envelope = what the response may re-emit relative to the persistent slot (body_only | outer | none | host_owned | document). dual-lock validates part markup only — not this envelope. Stem: stems/morph-safe-hypermedia.md; decision: docs/decisions/0012-swap-identity-contract.md.

No host HTMX exchange on this part — presentation or client chrome only. exchange envelope: n/a.

If a host wraps this markup in hx-*, that host owns the swap contract (sole identity + envelope). Prefer innerMorph / outerMorph for stable slots; replacement for flash; body-only responses under inner swaps.

Envelope response examples

This part has no owned exchange (envelope n/a). If a host adds hx-*, that host’s envelope applies — typically body_only:

<!-- Host wraps this presentation part with hx-* (host owns envelope) -->
<!-- Prefer: hx-swap="innerMorph" hx-target="#panel-body" -->
<!-- Server returns body_only interior for #panel-body -->
<div class="dz-stack">content…</div>

Do not re-own the slot:

<!-- WRONG: server returns the presentation root with a new id every poll -->
<div id="progress-root" data-dz-region>…</div>

How to use it

No extended guidance authored yet — start from Copy this and the dependency chips (Primitive = markup only; controller = load listed JS; Endpoint = implement Server exchange).

Seams

• copy the partial under Copy this; keep root class and data-* modifiers so the CSS/JS bundle matches
• no Server exchange on this part — pure presentation or client chrome
• satisfy the DOM contract tables (CI stop-ship)

DOM contract

What the emitted HTML must satisfy — the table is the required surface; Python under contracts/ is the package-internal dual-lock CI runs (tests/test_contracts.py), not an app route. Standalone HTMX4: implement the API so responses match this markup. Dazzle: the agent emits SSR that already satisfies it. Do not invent attrs outside these tables. For request/response wiring see Server exchange.

contracts/progress_bar.py

Required in the DOM: root .progress (part progress). Emit only these attributes — inventing extras is fine only if controllers ignore them; omitting required ones fails CI (tests/test_contracts.py).

Ingestion model ProgressBarModel

Server-side shape before render — one normalisation boundary for producers.

Exemplar render()

Executable in CI: the Python below is render(); the boxed preview is render(EXEMPLARS[0]) — the first fixture the dual-lock tests emit, not a separate widget and not gallery mock data. Sample model: value=62.0, label=Storage used.

def render(p: ProgressBarModel) -> str:
    """Model → dual-lock progress bar markup."""
    pct = _pct_str(p.value, p.max_value)
    now = (
        str(int(p.value))
        if float(p.value) == int(p.value)
        else f"{float(p.value):.1f}".rstrip("0").rstrip(".")
    )
    max_s = (
        str(int(p.max_value))
        if float(p.max_value) == int(p.max_value)
        else f"{float(p.max_value):.1f}".rstrip("0").rstrip(".")
    )
    label = html.escape(p.label or "Progress", quote=True)
    tone_attr = f' data-dz-tone="{html.escape(p.tone, quote=True)}"' if p.tone else ""
    return (
        f'<div class="dz-progress" role="progressbar" aria-label="{label}" '
        f'aria-valuenow="{now}" aria-valuemin="0" aria-valuemax="{max_s}"{tone_attr}>'
        f'<div class="dz-progress__bar" style="--dz-progress-value:{pct}%"></div>'
        f"</div>"
    )

Notes

Source files

Canonical registration in the registry. No dedicated controller — CSS for this part lives in the layered bundle.

site/registry.py · contracts/progress_bar.py