Skip to main content

Interface: ImageDataProvider<TImageDataSource, TImageData, TNormalizedImageDataSource>

Defined in: storage/image.ts:97

Data provider for raster images

Extends​

  • DataProvider<TImageDataSource, TImageData, TNormalizedImageDataSource>

Type Parameters​

TImageDataSource​

TImageDataSource extends ImageDataSource

The data source type this data provider opens

TImageData​

TImageData extends ImageData

The ImageData type produced by this data provider

TNormalizedImageDataSource​

TNormalizedImageDataSource extends TImageDataSource = TImageDataSource

The normalized data source type produced by normalize and accepted by load

Properties​

name​

readonly name: string

Defined in: storage/base.ts:134

The name of the data provider

Inherited from​

DataProvider.name

schema​

readonly schema: JsonSchema

Defined in: storage/base.ts:137

The JSON schema for the data source

Inherited from​

DataProvider.schema

uischema​

readonly uischema: UISchemaElement

Defined in: storage/base.ts:140

The JSON Forms UI schema for the data source

Inherited from​

DataProvider.uischema

Methods​

load()​

load(normalizedDataSource, options?): Promise<TImageData>

Defined in: storage/base.ts:174

Opens a data source and returns the loaded data accessor

The data source has to have been normalized by DataProvider.normalize beforehand.

Parameters​

normalizedDataSource​

TNormalizedImageDataSource

The normalized data source to open

options?​

DataProviderLoadOptions

See DataProviderLoadOptions

Returns​

Promise<TImageData>

A promise that resolves to the loaded data accessor

Inherited from​

DataProvider.load

normalize()​

normalize(dataSource, projectUrl): TNormalizedImageDataSource

Defined in: storage/base.ts:159

Returns the data source with all of this data provider's defaults applied and all of its relative URLs resolved

Data sources that normalize to the same value are considered equal, and their data is loaded only once and shared between all referencing objects. Normalization has to be idempotent: normalizing an already normalized data source must return the same value again.

Relative URLs are resolved against the URL the project was loaded from, and against the document base URL for projects without one.

Parameters​

dataSource​

TImageDataSource

The data source to normalize

projectUrl​

string | null

The absolute URL of the project, or null for projects that were not loaded from a URL

Returns​

TNormalizedImageDataSource

The normalized data source

Inherited from​

DataProvider.normalize