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

Class: BlockComponent<Model, Service, WidgetName> ​

Extends ​

Extended by ​

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/.pnpm/@lit+reactive-element@2.0.4/node_modules/@lit/reactive-element/development/reactive-element.d.ts:504

Other ​

[blockComponentSymbol] ​

[blockComponentSymbol]: boolean = true

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:49

_disposables ​

protected _disposables: DisposableGroup

Inherited from ​

SignalWatcher(WithDisposable(ShadowlessElement))._disposables

Defined in ​

packages/framework/block-std/src/view/utils/with-disposable.ts:8

disposables ​

readonly disposables: DisposableGroup

Inherited from ​

SignalWatcher(WithDisposable(ShadowlessElement)).disposables

Defined in ​

packages/framework/block-std/src/view/utils/with-disposable.ts:10

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:333

blockId ​

get blockId(): string

Returns ​

string

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:220

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:224

dirty ​

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:344

doc ​

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:347

flavour ​

get flavour(): string

Returns ​

string

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:233

host ​

get host(): EditorHost

Returns ​

EditorHost

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:237

isVersionMismatch ​

get isVersionMismatch(): boolean

Returns ​

boolean

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:241

model ​

get model(): Model

Returns ​

Model

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:261

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:276

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:282

selected ​

get selected(): null | BaseSelection

Returns ​

null | BaseSelection

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:291

selection ​

get selection(): SelectionManager

Returns ​

SelectionManager

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:295

service ​

get service(): Service

Returns ​

Service

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:299

std ​

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:350

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:314

viewType ​

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:353

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:318

widgets ​

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:368

addRenderer() ​

addRenderer(renderer): void

Parameters ​

• renderer

Returns ​

void

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:99

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:103

handleEvent() ​

handleEvent(name, handler, options?): void

Parameters ​

• name: "blur" | "click" | "doubleClick" | "tripleClick" | "pointerDown" | "pointerMove" | "pointerUp" | "pointerOut" | "dragStart" | "dragMove" | "dragEnd" | "pinch" | "pan" | "keyDown" | "keyUp" | "selectionChange" | "compositionStart" | "compositionUpdate" | "compositionEnd" | "cut" | "copy" | "paste" | "beforeInput" | "focus" | "drop" | "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:51

renderBlock() ​

renderBlock(): unknown

Returns ​

unknown

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:166

renderChildren() ​

renderChildren(model): TemplateResult

Parameters ​

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

Returns ​

TemplateResult

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:68

renderVersionMismatch() ​

renderVersionMismatch(expectedVersion, actualVersion): TemplateResult

Parameters ​

• expectedVersion: number

• actualVersion: number

Returns ​

TemplateResult

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:170

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.

ts
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:119

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.

ts
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:144

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:30

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:159

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:

ts
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:153

update() ​

protected update(changedProperties): void

Updates the element. This method reflects property values to attributes and calls render to render DOM via lit-html. Setting properties inside this method will not trigger another update.

Parameters ​

• changedProperties: PropertyValueMap<any> | Map<PropertyKey, unknown>

Map of changed properties with old values

Returns ​

void

Overrides ​

SignalWatcher(WithDisposable(ShadowlessElement)).update

Defined in ​

packages/framework/block-std/src/view/element/block-component.ts:191

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