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Class: AbstractExtension

@ima/core.AbstractExtension

Abstract extension

Implements

Indexable

[key: PropertyKey]: any | EventHandler | UnknownParameters

Constructors

constructor

new AbstractExtension()

Properties

_pageStateManager

Protected Optional _pageStateManager: PageStateManager

State manager.

Defined in

packages/core/src/extension/AbstractExtension.ts:19


_partialStateSymbol

Protected _partialStateSymbol: symbol

Defined in

packages/core/src/extension/AbstractExtension.ts:25


_usingStateManager

Protected _usingStateManager: boolean = false

Flag indicating whether the PageStateManager should be used instead of partial state.

Defined in

packages/core/src/extension/AbstractExtension.ts:24


params

params: UnknownParameters = {}

The route parameters extracted from the current route.

Defined in

packages/core/src/extension/AbstractExtension.ts:34


status

status: number = 200

The HTTP response code to send to the client.

Defined in

packages/core/src/extension/AbstractExtension.ts:30

Methods

activate

activate(): void | Promise<undefined>

Callback for activating the extension in the UI. This is the last method invoked during controller (and extensions) initialization, called after all the promises returned from the load method have been resolved and the controller has configured the meta manager.

The extension may register any React and DOM event listeners in this method. The extension may start receiving event bus event after this method completes.

Returns

void | Promise<undefined>

Implementation of

Extension.activate

Defined in

packages/core/src/extension/AbstractExtension.ts:51


beginStateTransaction

beginStateTransaction(): void

Starts queueing state patches off the controller state. While the transaction is active every setState call has no effect on the current state.

Note that call to getState after the transaction has begun will return state as it was before the transaction.

Returns

void

Implementation of

Extension.beginStateTransaction

Defined in

packages/core/src/extension/AbstractExtension.ts:102


cancelStateTransaction

cancelStateTransaction(): void

Cancels ongoing state transaction. Uncommitted state changes are lost.

Returns

void

Implementation of

Extension.cancelStateTransaction

Defined in

packages/core/src/extension/AbstractExtension.ts:120


clearPartialState

clearPartialState(): void

Clears the current partial state of the extension and sets it value to empty object.

Returns

void

Implementation of

Extension.clearPartialState

Defined in

packages/core/src/extension/AbstractExtension.ts:148


commitStateTransaction

commitStateTransaction(): void

Applies queued state patches to the controller state. All patches are squashed and applied with one setState call.

Returns

void

Implementation of

Extension.commitStateTransaction

Defined in

packages/core/src/extension/AbstractExtension.ts:111


deactivate

deactivate(): void | Promise<undefined>

Callback for deactivating the extension in the UI. This is the first method invoked during extension deinitialization. This usually happens when the user navigates to a different URL.

This method is the lifecycle counterpart of the activate method.

The extension should deregister listeners registered and release all resources obtained in the activate method.

Returns

void | Promise<undefined>

Implementation of

Extension.deactivate

Defined in

packages/core/src/extension/AbstractExtension.ts:58


destroy

destroy(): void | Promise<undefined>

Finalization callback, called when the controller is being discarded by the application. This usually happens when the user navigates to a different URL.

This method is the lifecycle counterpart of the init method.

The extension should release all resources obtained in the init method. The extension must release any resources that might not be released automatically when the extensions's instance is destroyed by the garbage collector.

Returns

void | Promise<undefined>

Implementation of

Extension.destroy

Defined in

packages/core/src/extension/AbstractExtension.ts:44


getAllowedStateKeys

getAllowedStateKeys(): never[]

Returns array of allowed state keys for extension.

Returns

never[]

Implementation of

Extension.getAllowedStateKeys

Defined in

packages/core/src/extension/AbstractExtension.ts:197


getHttpStatus

getHttpStatus(): number

Inherit Doc

Returns

number

Defined in

packages/core/src/extension/AbstractExtension.ts:190


getPartialState

getPartialState(): any

Returns the current partial state of the extension.

Returns

any

The current partial state of the extension.

Implementation of

Extension.getPartialState

Defined in

packages/core/src/extension/AbstractExtension.ts:141


getRouteParams

getRouteParams(): UnknownParameters

Returns the current route parameters.

Returns

UnknownParameters

The current route parameters.

Implementation of

Extension.getRouteParams

Defined in

packages/core/src/extension/AbstractExtension.ts:162


getState

getState(): any

Returns the current state of the controller using this extension.

Returns

any

The current state of the controller.

Implementation of

Extension.getState

Defined in

packages/core/src/extension/AbstractExtension.ts:91


init

init(): void | Promise<undefined>

Callback for initializing the controller extension after the route parameters have been set on this extension.

Returns

void | Promise<undefined>

Implementation of

Extension.init

Defined in

packages/core/src/extension/AbstractExtension.ts:39


load

load(): UnknownPromiseParameters | Promise<UnknownPromiseParameters>

Callback the extension uses to request the resources it needs to render its related parts of the view. This method is invoked after the init method.

The extension should request all resources it needs in this method, and represent each resource request as a promise that will resolve once the resource is ready for use (these can be data fetched over HTTP(S), database connections, etc).

The method must return a plain flat object. The field names of the object identify the resources being fetched and prepared, each value must be either the resource (e.g. view configuration or a value retrieved synchronously) or a Promise that will resolve to the resource.

The IMA will use the object to set the state of the controller.

Any returned promise that gets rejected will redirect the application to the error page. The error page that will be used depends on the status code of the error.

Returns

UnknownPromiseParameters | Promise<UnknownPromiseParameters>

A map object of promises resolved when all resources the controller requires are ready. The resolved values will be pushed to the controller's state.

Implementation of

Extension.load

Defined in

packages/core/src/extension/AbstractExtension.ts:65


setPageStateManager

setPageStateManager(pageStateManager?): void

Sets the state manager used to manage the controller's state..

Parameters

NameTypeDescription
pageStateManager?PageStateManagerThe current state manager to use.

Returns

void

Implementation of

Extension.setPageStateManager

Defined in

packages/core/src/extension/AbstractExtension.ts:169


setPartialState

setPartialState(partialStatePatch): void

Patches the partial state of the extension. The extension is able during its load and update phase receive state from active controller using this extension and from previously loaded/updated extensions.

Parameters

NameTypeDescription
partialStatePatchUnknownParametersPatch of the controller's state to apply.

Returns

void

Implementation of

Extension.setPartialState

Defined in

packages/core/src/extension/AbstractExtension.ts:129


setRouteParams

setRouteParams(params?): void

Sets the current route parameters. This method is invoked before the init method.

Parameters

NameTypeDescription
paramsObjectThe current route parameters.

Returns

void

Implementation of

Extension.setRouteParams

Defined in

packages/core/src/extension/AbstractExtension.ts:155


setState

setState(statePatch): void

Patches the state of the controller using this extension by using the provided object by copying the provided patch object fields to the controller's state object.

Note that the state is not patched recursively but by replacing the values of the top-level fields of the state object.

Note that the extension may modify only the fields of the state that it has specified by its getAllowedStateKeys method.

Parameters

NameTypeDescription
statePatchUnknownParametersPatch of the controller's state to apply.

Returns

void

Implementation of

Extension.setState

Defined in

packages/core/src/extension/AbstractExtension.ts:82


switchToPartialState

switchToPartialState(): void

Disables using PageStateManager for getting state.

Returns

void

Implementation of

Extension.switchToPartialState

Defined in

packages/core/src/extension/AbstractExtension.ts:183


switchToStateManager

switchToStateManager(): void

Enables using PageStateManager for getting state.

Returns

void

Implementation of

Extension.switchToStateManager

Defined in

packages/core/src/extension/AbstractExtension.ts:176


update

update(): Object

Callback for updating the extension after a route update. This method is invoked if the current route has the onlyUpdate flag set to true and the current controller and view match those used by the previously active route, or, the onlyUpdate option of the current route is a callback and returned true.

The method must return an object with the same semantics as the result of the load method. The controller's state will then be patched by the returned object.

The other extension lifecycle callbacks (init, load, activate, deactivate, Extension#deinit) are not call in case this method is used.

Returns

Object

A map object of promises resolved when all resources the controller requires are ready. The resolved values will be pushed to the controller's state.

Implementation of

Extension.update

Defined in

packages/core/src/extension/AbstractExtension.ts:75