# BlockInteraction

Assigns stable block identities and provides select, move and insert commands. Product UI supplies drag handles.

Assigns stable block identities and provides select, move and insert commands. Product UI supplies drag handles.

`@quirekit/extensions` · **MIT**

## Editor compatibility
Layer：**Shared document capability**
| Editor | Status | Assembly and boundaries |
| --- | --- | --- |
| Classic | Supported | [classicEditorPreset](/en/plugins/reference/classic-editor-preset) — Use the product-neutral classicEditorPreset without duplicating installed capabilities. The Word preset replaces paragraphs, headings and container lists; do not stack generic structures onto that model. |
| Block | Supported | [createBlockEditorPreset](/en/plugins/reference/create-block-editor-preset) — The default createBlockEditor preset installs this capability. Configure the corresponding preset child; graphic editing uses the preset's workspace ports, while persistence and assets remain host-owned. Avoid duplicate extensions. |

“Supported” means the product assembly above exists; interaction, host services and file formats retain their own conditions. See [status and integration rules](/en/plugins/compatibility). Licensing is shown separately.

## Installation

```sh
pnpm add @quirekit/extensions@alpha
```

Install in Editor extensions. The host supplies a view, container and persistence; see [Quick start](/en/guide/quick-start).

```ts
import { BlockInteraction } from '@quirekit/extensions'
```

Use compatible versions available from your distribution source. This site uses the Alpha workspace. License labels come from package metadata; see [support and licensing](/en/support).

## Integration by editor

These snippets use an existing host element named element. The host owns container sizing and persistence; call instance.destroy() on teardown. Avoid duplicating preset capabilities and supply required host ports before installation.

### Classic

Use the product-neutral classicEditorPreset without duplicating installed capabilities. The Word preset replaces paragraphs, headings and container lists; do not stack generic structures onto that model.

[classicEditorPreset](/en/plugins/reference/classic-editor-preset)

```ts
import { createClassicEditor } from '@quirekit/classic-editor'
import '@quirekit/classic-editor/styles.css'

const instance = createClassicEditor({ element })
```

### Block

The default createBlockEditor preset installs this capability. Configure the corresponding preset child; graphic editing uses the preset's workspace ports, while persistence and assets remain host-owned. Avoid duplicate extensions.

[createBlockEditorPreset](/en/plugins/reference/create-block-editor-preset)

```ts
import { createBlockEditor } from '@quirekit/block-editor'
import '@quirekit/block-editor/styles.css'

const instance = createBlockEditor({
  element,
  content: { type: 'doc', content: [{ type: 'paragraph' }] },
})
```

## Configuration

These are extension-level defaults. Presets can override them; they are distinct from current document attributes. See [configuration](/en/plugins/configuration).

### types

Block types whose complete subtrees can be moved.

Type：`readonly string[]`

Default：`["paragraph", "heading", "codeBlock", "blockquote", "bulletList", "orderedList", "horizontalRule", "table"]`

### scopes

Allowed direct parents; nested unlisted parents remain unavailable.

Type：`readonly string[]`

Default：`["doc"]`

### createId

Allocates an opaque identity for a newly created block.

Type：`(): string`

Default：`createBlockId`

### admit

Live feature policy; null permits the candidate.

Type：`(context: BlockAdmissionContext): BlockRejection | null`

Default：`() => null`

### requirePortableIdentity

Declares durable external references requiring a portable export projection.

Type：`boolean`

Default：`false`

## Commands and runtime

These commands are supplied directly by this extension. Availability depends on the installed schema, selection and protection policy; query editor.can() first.

| Command | Parameter signature |
| --- | --- |
| `selectBlockRange` | `selectBlockRange(range: BlockRangeRef \| null)` |
| `moveBlockRange` | `moveBlockRange(request: BlockMoveRequest)` |
| `insertBlockAt` | `insertBlockAt(request: BlockInsertRequest)` |

These are parameter signatures. See [commands and controls](/en/build/commands) to connect UI while retaining one transaction/history authority.

## Next steps

Return to [all plugins](/en/plugins), or read [configuration](/en/plugins/configuration) to distinguish options, attributes and commands.

See [extension development](/en/build/extension) for custom capabilities and [Build a product](/en/build) for complete hosting.