"""Registry mapping a Widget's widget_type to its render/action module --
the widget-system's analogue of routers/device.py's old RENDERERS/
ADVANCE_RENDERERS/BACK_RENDERERS dicts, generalized from "one mode owns
the whole panel" to "each widget renders into its own region and
optionally responds to named button actions."

Each module in this package exposes:

    render(db, frame, widget, target_w, target_h) -> Image.Image
        An RGB image exactly target_w x target_h, unquantized -- the
        widget's content composed into its own region. Never returns
        packed panel bytes or raises for a foreseeable failure (a
        widget's own fetch hiccup shows a small placeholder instead) --
        image_pipeline.render_panel composites every widget's own
        render() result onto one shared canvas and quantizes/packs the
        whole thing once (see its own docstring).

    ACTIONS: dict[str, Callable[[Session, Frame, Widget], None]]
        Named button actions this widget type supports (e.g. "advance",
        "back", "check_now") -- see models.FrameButtonAction. Each
        function mutates the widget's own state via db.widget_locked
        internally; none return a value or re-render themselves --
        whatever dispatches a button press (routers/device.py, once the
        widget-system cutover lands) re-renders the whole panel once
        after running every assigned action.

    ACTION_LABELS: dict[str, str]
        Human-readable labels for ACTIONS' keys, for the button-
        assignment UI.
"""

from __future__ import annotations

from . import calendar, photos, whiteboard

WIDGET_TYPES = {
    "photos": photos,
    "calendar": calendar,
    "whiteboard": whiteboard,
}