Dialog

@ailuracode/alpine-dialog

Headless accessible dialog store for Alpine.js — open/close state, focus trap, scroll lock integration, and ARIA helpers. No markup or CSS included.

Install

pnpm add @ailuracode/alpine-dialog @ailuracode/alpine-core alpinejs

Quick start

import Alpine from "alpinejs";
import { dialogPlugin } from "@ailuracode/alpine-dialog";
import { scrollPlugin } from "@ailuracode/alpine-scroll";

Alpine.plugin(scrollPlugin());
Alpine.plugin(
  dialogPlugin({
    scroll: Alpine.store("scroll"),
  })
);
Alpine.start();

Store API

// Open / close / toggle
$store.dialog.open("settings");
$store.dialog.close("settings");
$store.dialog.toggle("settings");
$store.dialog.isOpen("settings");

// Register / unregister instances
$store.dialog.register("confirm", { closeOnEscape: true, scrollLock: true });
$store.dialog.unregister("confirm");

// Accessibility helpers
$store.dialog.bindContainer("settings", containerEl);
$store.dialog.handleKeydown("settings", event);
$store.dialog.handleOutsideClick("settings", event);
$store.dialog.dialogProps("settings");
// → { role: "dialog", "aria-modal": true, "aria-labelledby": ..., "aria-describedby": ... }

// Cleanup
$store.dialog.destroy();

Options

dialogPlugin({
  id?: string,                    // controller identifier
  closeOnEscape?: boolean,        // default: true
  closeOnOutsideClick?: boolean,  // default: true
  scrollLock?: boolean,           // default: true
  scroll?: ScrollStore,           // optional @ailuracode/alpine-scroll store
  storeKey?: string,              // Alpine store key (default: "dialog")
});

Avoiding name collisions

If your application already owns a $store.dialog — or another toolkit plugin registers on that name — rename the integration surface without touching the controller:

Alpine.plugin(dialogPlugin({ storeKey: "modal" })); // → $store.modal

The exposed constant DEFAULT_DIALOG_STORE_KEY keeps the rename discoverable from TypeScript.

Standalone usage (no Alpine)

import { createDialogController } from "@ailuracode/alpine-dialog";

const controller = createDialogController({ scrollLock: true });
controller.register("my-dialog");
controller.open("my-dialog");
controller.isOpen("my-dialog"); // true
controller.close("my-dialog");
controller.destroy();

Use createDialogStore() for a store-shaped object without Alpine, or createDialogStoreFromController(controller) when wiring a custom adapter.

Controller API	Description
hasInstance(id)	Whether a dialog id is registered
snapshotInstances()	Shallow readonly copies for adapter sync
isOpen(id)	Query open state

The controller emits open, close, and change events. The Alpine plugin mirrors snapshots into $store.dialog.instances.

Architecture

DialogController owns all mutable state. $store.dialog.instances is a reactive mirror updated on open, close, and change. Mutating store snapshots directly does not change controller state.

Migration

Removed / changed	Replacement
controller.instances getter	snapshotInstances() or hasInstance(id)
controller.toStore()	createDialogStore() or createDialogStoreFromController(controller)

Basic markup

<div
  x-data
  x-init="$store.dialog.register('settings')"
  @keydown.window="$store.dialog.handleKeydown('settings', $event)"
>
  <button @click="$store.dialog.open('settings', { trigger: $event.target })">
    Settings
  </button>

  <template x-teleport="body">
    <div
      x-show="$store.dialog.isOpen('settings')"
      class="fixed inset-0 z-50 flex items-center justify-center bg-black/50 p-4"
    >
      <div
        x-bind="$store.dialog.dialogProps('settings')"
        x-init="$store.dialog.bindContainer('settings', $el)"
        @click.stop
      >
    <h2 id="settings-title">Settings</h2>
    <p id="settings-desc">Update your preferences.</p>
    <button @click="$store.dialog.close('settings')">Close</button>
    </div>
  </div>
  </template>
</div>

Accessibility

• role="dialog" and aria-modal="true" via dialogProps()
• Focus trap activates when the container is bound and the dialog opens
• Focus restores to the trigger element on close
• Escape dismisses when enabled

SSR

State is in-memory. Guard DOM bindings (bindContainer, focus trap) behind x-init or client-only wrappers.

Integration

• Scroll — pass $store.scroll as scroll
• Toast — show confirmation toasts after dialog actions in your UI layer (not a required dependency)

Limitations

• Stacking/z-index is consumer-owned — wrap modals in <template x-teleport="body"> when inside overflow-hidden ancestors (x-teleport requires a <template> tag in Alpine 3)
• One focus trap per dialog id; bind the dialog panel root element

License

MIT