BlockSuite API Documentation / @blocksuite/block-std / BlockComponent

Class: BlockComponent<Model, Service, WidgetName>

Extends

• ShadowlessElement<this> & DisposableClass<this>

Extended by

• GfxBlockComponent

Type Parameters

• Model extends BlockModel = BlockModel

• Service extends BlockService = BlockService

• WidgetName extends string = string

Constructors

new BlockComponent()

new BlockComponent<Model, Service, WidgetName>(): BlockComponent<Model, Service, WidgetName>

Returns

BlockComponent<Model, Service, WidgetName>

Inherited from

SignalWatcher(WithDisposable(ShadowlessElement)).constructor

Defined in

node_modules/@lit/reactive-element/development/reactive-element.d.ts:504

Other

_disposables

protected _disposables: DisposableGroup

Inherited from

SignalWatcher(WithDisposable(ShadowlessElement))._disposables

Defined in

packages/framework/global/dist/utils/with-disposable.d.ts:5

---

[blockComponentSymbol]

[blockComponentSymbol]: boolean = true

Defined in

packages/framework/block-std/src/view/element/block-component.ts:52

---

disposables

readonly disposables: DisposableGroup

Inherited from

SignalWatcher(WithDisposable(ShadowlessElement)).disposables

Defined in

packages/framework/global/dist/utils/with-disposable.d.ts:6

---

virtualKeyboardPolicy

virtualKeyboardPolicy: string

Inherited from

SignalWatcher(WithDisposable(ShadowlessElement)).virtualKeyboardPolicy

Defined in

packages/framework/global/dist/types/virtual-keyboard.d.ts:20

---

disableShadowRoot

static disableShadowRoot: boolean = true

Inherited from

SignalWatcher(WithDisposable(ShadowlessElement)).disableShadowRoot

Defined in

packages/framework/block-std/src/view/element/shadowless-element.ts:6

---

_renderers

Defined in

packages/framework/block-std/src/view/element/block-component.ts:301

---

blockId

get blockId(): string

Returns

string

Defined in

packages/framework/block-std/src/view/element/block-component.ts:71

---

childBlocks

get childBlocks(): BlockComponent<BlockModel<object, SignaledProps<object>>, BlockService, string>[]

Returns

BlockComponent<BlockModel<object, SignaledProps<object>>, BlockService, string>[]

Defined in

packages/framework/block-std/src/view/element/block-component.ts:75

---

doc

Defined in

packages/framework/block-std/src/view/element/block-component.ts:312

---

flavour

get flavour(): string

Returns

string

Defined in

packages/framework/block-std/src/view/element/block-component.ts:84

---

host

get host(): EditorHost

Returns

EditorHost

Defined in

packages/framework/block-std/src/view/element/block-component.ts:88

---

isVersionMismatch

get isVersionMismatch(): boolean

Returns

boolean

Defined in

packages/framework/block-std/src/view/element/block-component.ts:92

---

model

get model(): Model

Returns

Model

Defined in

packages/framework/block-std/src/view/element/block-component.ts:112

---

parentComponent

get parentComponent(): null | BlockComponent<BlockModel<object, SignaledProps<object>>, BlockService, string>

Returns

null | BlockComponent<BlockModel<object, SignaledProps<object>>, BlockService, string>

Defined in

packages/framework/block-std/src/view/element/block-component.ts:127

---

renderChildren

get renderChildren(): (model, filter?) => TemplateResult

Returns

Function

Parameters

• model: BlockModel<object, SignaledProps<object>>

• filter?

Returns

TemplateResult

Defined in

packages/framework/block-std/src/view/element/block-component.ts:133

---

rootComponent

get rootComponent(): null | BlockComponent<BlockModel<object, SignaledProps<object>>, BlockService, string>

Returns

null | BlockComponent<BlockModel<object, SignaledProps<object>>, BlockService, string>

Defined in

packages/framework/block-std/src/view/element/block-component.ts:137

---

selected

get selected(): null | BaseSelection

Returns

null | BaseSelection

Defined in

packages/framework/block-std/src/view/element/block-component.ts:146

---

selection

get selection(): SelectionManager

Returns

SelectionManager

Defined in

packages/framework/block-std/src/view/element/block-component.ts:150

---

service

get service(): Service

Returns

Service

Defined in

packages/framework/block-std/src/view/element/block-component.ts:154

---

std

Defined in

packages/framework/block-std/src/view/element/block-component.ts:38

---

topContenteditableElement

get topContenteditableElement(): null | BlockComponent<BlockModel<object, SignaledProps<object>>, BlockService, string>

Returns

null | BlockComponent<BlockModel<object, SignaledProps<object>>, BlockService, string>

Defined in

packages/framework/block-std/src/view/element/block-component.ts:163

---

viewType

Defined in

packages/framework/block-std/src/view/element/block-component.ts:315

---

widgetComponents

get widgetComponents(): Partial<Record<WidgetName, WidgetComponent<BlockModel<object, SignaledProps<object>>, BlockComponent<BlockModel<object, SignaledProps<object>>, BlockService, string>, BlockService>>>

Returns

Partial<Record<WidgetName, WidgetComponent<BlockModel<object, SignaledProps<object>>, BlockComponent<BlockModel<object, SignaledProps<object>>, BlockService, string>, BlockService>>>

Defined in

packages/framework/block-std/src/view/element/block-component.ts:167

---

widgets

Defined in

packages/framework/block-std/src/view/element/block-component.ts:330

---

addRenderer()

addRenderer(renderer): void

Parameters

• renderer

Returns

void

Defined in

packages/framework/block-std/src/view/element/block-component.ts:198

---

bindHotKey()

bindHotKey(keymap, options?): () => void

Parameters

• keymap: Record<string, UIEventHandler>

• options?

• options.flavour?: boolean

• options.global?: boolean

Returns

Function

Returns

void

Defined in

packages/framework/block-std/src/view/element/block-component.ts:202

---

handleEvent()

handleEvent(name, handler, options?): void

Parameters

• name: "click" | "doubleClick" | "tripleClick" | "pointerDown" | "pointerMove" | "pointerUp" | "pointerOut" | "dragStart" | "dragMove" | "dragEnd" | "pinch" | "pan" | "keyDown" | "keyUp" | "selectionChange" | "compositionStart" | "compositionUpdate" | "compositionEnd" | "cut" | "copy" | "paste" | "nativeDragStart" | "nativeDragMove" | "nativeDragEnd" | "nativeDrop" | "beforeInput" | "blur" | "focus" | "contextMenu" | "wheel"

• handler: UIEventHandler

• options?

• options.flavour?: boolean

• options.global?: boolean

Returns

void

Defined in

packages/framework/block-std/src/view/element/block-component.ts:54

---

renderBlock()

renderBlock(): unknown

Returns

unknown

Defined in

packages/framework/block-std/src/view/element/block-component.ts:265

---

renderVersionMismatch()

renderVersionMismatch(expectedVersion, actualVersion): TemplateResult

Render a warning message when the block version is mismatched.

Parameters

• expectedVersion: number

If the schema is not found, the expected version is -1. Which means the block is not supported in the current editor.

• actualVersion: number

The version of the block's crdt data.

Returns

TemplateResult

Defined in

packages/framework/block-std/src/view/element/block-component.ts:275

lifecycle

connectedCallback()

connectedCallback(): void

Invoked when the component is added to the document's DOM.

In connectedCallback() you should setup tasks that should only occur when the element is connected to the document. The most common of these is adding event listeners to nodes external to the element, like a keydown event handler added to the window.

connectedCallback() {
  super.connectedCallback();
  addEventListener('keydown', this._handleKeydown);
}

Typically, anything done in connectedCallback() should be undone when the element is disconnected, in disconnectedCallback().

Returns

void

Overrides

SignalWatcher(WithDisposable(ShadowlessElement)).connectedCallback

Defined in

packages/framework/block-std/src/view/element/block-component.ts:218

---

disconnectedCallback()

disconnectedCallback(): void

Invoked when the component is removed from the document's DOM.

This callback is the main signal to the element that it may no longer be used. disconnectedCallback() should ensure that nothing is holding a reference to the element (such as event listeners added to nodes external to the element), so that it is free to be garbage collected.

disconnectedCallback() {
  super.disconnectedCallback();
  window.removeEventListener('keydown', this._handleKeydown);
}

An element may be re-connected after being disconnected.

Returns

void

Overrides

SignalWatcher(WithDisposable(ShadowlessElement)).disconnectedCallback

Defined in

packages/framework/block-std/src/view/element/block-component.ts:243

rendering

createRenderRoot()

createRenderRoot(): HTMLElement | DocumentFragment

Returns

HTMLElement | DocumentFragment

Inherited from

SignalWatcher(WithDisposable(ShadowlessElement)).createRenderRoot

Defined in

packages/framework/block-std/src/view/element/shadowless-element.ts:28

---

render()

render(): unknown

Invoked on each update to perform rendering tasks. This method may return any value renderable by lit-html's ChildPart - typically a TemplateResult. Setting properties inside this method will not trigger the element to update.

Returns

unknown

Overrides

SignalWatcher(WithDisposable(ShadowlessElement)).render

Defined in

packages/framework/block-std/src/view/element/block-component.ts:258

styles

finalizeStyles()

protected static finalizeStyles(styles?): CSSResultOrNative[]

Takes the styles the user supplied via the static styles property and returns the array of styles to apply to the element. Override this method to integrate into a style management system.

Styles are deduplicated preserving the last instance in the list. This is a performance optimization to avoid duplicated styles that can occur especially when composing via subclassing. The last item is kept to try to preserve the cascade order with the assumption that it's most important that last added styles override previous styles.

Parameters

• styles?: CSSResultGroup

Returns

CSSResultOrNative[]

Nocollapse

Inherited from

SignalWatcher(WithDisposable(ShadowlessElement)).finalizeStyles

Defined in

packages/framework/block-std/src/view/element/shadowless-element.ts:8

updates

getUpdateComplete()

protected getUpdateComplete(): Promise<boolean>

Override point for the updateComplete promise.

It is not safe to override the updateComplete getter directly due to a limitation in TypeScript which means it is not possible to call a superclass getter (e.g. super.updateComplete.then(...)) when the target language is ES5 (https://github.com/microsoft/TypeScript/issues/338). This method should be overridden instead. For example:

class MyElement extends LitElement {
  override async getUpdateComplete() {
    const result = await super.getUpdateComplete();
    await this._myChild.updateComplete;
    return result;
  }
}

Returns

Promise<boolean>

A promise of a boolean that resolves to true if the update completed without triggering another update.

Overrides

SignalWatcher(WithDisposable(ShadowlessElement)).getUpdateComplete

Defined in

packages/framework/block-std/src/view/element/block-component.ts:252