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@bimetal/headless

v0.17.0

Published

Framework-agnostic headless calendar adapter: event actions, drag preview logic

Readme

@bimetal/headless

Der kanonische, framework-agnostische Kalender-Controller. createCalendarController besitzt die gesamte Interaktionssemantik: Navigation, Dialog-Routing (inkl. Recurrence-Instanzen), Drag & Drop, Selection, Kategorie-/Ressourcen-Filter, Undo, Rule-Fehler und Tastatur. Die UI-Stacks (React, Vue, Svelte, Angular, Vanilla) sind reine Bindings.

Die Schnittlinie ist scharf: DOM-Messung & Listener-Registrierung = Framework. Jedes if = Controller. Damit ist Cross-Framework-Drift strukturell ausgeschlossen statt eine Frage der Disziplin. Das Paket kennt kein React/Vue/Svelte/Angular und kein DOM jenseits struktureller Drag-Typen — es läuft in Tests ohne Browser, in Workers und in Node.

Installation

npm install @bimetal/headless @bimetal/calendar-data

createCalendarController

import { createCalendarController } from '@bimetal/headless';
import { createCalendarStore } from '@bimetal/calendar-data';

const controller = createCalendarController({
  store: createCalendarStore(),
  config: { core: { timezone: 'Europe/Berlin' } },
  rules: [],          // optionale CalendarRules
  customViews: [],    // optionale agnostische View-Specs
});

Signatur (gekürzt):

function createCalendarController(opts: CalendarControllerOptions): CalendarController;

interface CalendarControllerOptions {
  store: CalendarStore;                 // Basis-Store; intern withRules-gewrappt
  config?: CalendarConfigInput;         // core/locale/categories/resources
  rules?: readonly CalendarRule[];
  customViews?: readonly CustomViewSpec[];
  eventDialogKind?: 'builtin' | 'none' | 'custom';
}

Snapshot / subscribe-Vertrag

Der Controller folgt dem useSyncExternalStore-Kontrakt:

  • getSnapshot() liefert eine identitäts-stabile, immutable Sicht aller Interaktions-State-Felder (currentDate, currentView, events, dialog, selection, dragPreview, lastAction, hiddenCategories, …). Dieselbe Referenz wird zurückgegeben, bis ein Intent tatsächlich etwas ändert.
  • subscribe(listener) registriert einen Listener und gibt eine Unsubscribe-Funktion zurück.
  • destroy() räumt Store-Subscriptions und Listener ab.

Reaktive Option-Updates ohne Neuerzeugung: setConfig, setRules, setCustomViews. Intents sind direkte Methoden — prev/next/today/setView, openEdit/openCreate/saveDialog/deleteDialog, dropAllDay/dropTimed/dropResource/dropTimeline, selectEvent, toggleCategory/toggleResource, undo, handleKeydown.

Architektur

Vertiefung: doc/02-architecture/06-headless.md.