949fac1a7c
This commit applies `strictNullChecks` to the entire codebase to improve maintainability and type safety. Key changes include: - Remove some explicit null-checks where unnecessary. - Add necessary null-checks. - Refactor static factory functions for a more functional approach. - Improve some test names and contexts for better debugging. - Add unit tests for any additional logic introduced. - Refactor `createPositionFromRegexFullMatch` to its own function as the logic is reused. - Prefer `find` prefix on functions that may return `undefined` and `get` prefix for those that always return a value.
71 lines
2.0 KiB
TypeScript
71 lines
2.0 KiB
TypeScript
import { shallowRef, shallowReadonly } from 'vue';
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import { IApplicationContext, IReadOnlyApplicationContext } from '@/application/Context/IApplicationContext';
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import { ICategoryCollectionState, IReadOnlyCategoryCollectionState } from '@/application/Context/State/ICategoryCollectionState';
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import { IEventSubscriptionCollection } from '@/infrastructure/Events/IEventSubscriptionCollection';
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export function useCollectionState(
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context: IApplicationContext,
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events: IEventSubscriptionCollection,
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) {
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const currentState = shallowRef<IReadOnlyCategoryCollectionState>(context.state);
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events.register([
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context.contextChanged.on((event) => {
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currentState.value = event.newState;
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}),
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]);
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const defaultSettings: IStateCallbackSettings = {
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immediate: false,
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};
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function onStateChange(
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handler: NewStateEventHandler,
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settings: Partial<IStateCallbackSettings> = defaultSettings,
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) {
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events.register([
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context.contextChanged.on((event) => {
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handler(event.newState, event.oldState);
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}),
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]);
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const defaultedSettings: IStateCallbackSettings = {
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...defaultSettings,
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...settings,
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};
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if (defaultedSettings.immediate) {
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handler(context.state, undefined);
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}
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}
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function modifyCurrentState(mutator: StateModifier) {
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mutator(context.state);
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}
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function modifyCurrentContext(mutator: ContextModifier) {
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mutator(context);
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}
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return {
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modifyCurrentState,
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modifyCurrentContext,
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onStateChange,
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currentContext: context as IReadOnlyApplicationContext,
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currentState: shallowReadonly(currentState),
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};
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}
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export type NewStateEventHandler = (
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newState: IReadOnlyCategoryCollectionState,
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oldState: IReadOnlyCategoryCollectionState | undefined,
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) => void;
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export interface IStateCallbackSettings {
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readonly immediate: boolean;
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}
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export type StateModifier = (
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state: ICategoryCollectionState,
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) => void;
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export type ContextModifier = (
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state: IApplicationContext,
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) => void;
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