@v4fire/client/src/base/b-virtual-scroll-new/modules/state/helpers.ts

V4Fire client core library

/*!
 * V4Fire Client Core
 * https://github.com/V4Fire/Client
 *
 * Released under the MIT license
 * https://github.com/V4Fire/Client/blob/master/LICENSE
 */

import type { VirtualScrollState, PrivateComponentState } from 'base/b-virtual-scroll-new/interface';

/**
 * Creates an initial state object for a component
 */
export function createInitialState(): VirtualScrollState {
	return {
		loadPage: 0,
		renderPage: 0,
		remainingItems: undefined,
		remainingChildren: undefined,
		maxViewedItem: undefined,
		maxViewedChild: undefined,
		data: [],
		lastLoadedData: [],
		lastLoadedRawData: undefined,
		isLastEmpty: false,
		isInitialLoading: true,
		items: [],
		childList: [],
		isInitialRender: true,
		areRequestsStopped: false,
		isLoadingInProgress: false,
		isLifecycleDone: false,
		isLastErrored: false,
		isLastRender: false,
		isTombstonesInView: false,
		dataOffset: 0
	};
}

/**
 * Creates an initial private state object for a component
 */
export function createPrivateInitialState(): PrivateComponentState {
	return {
		isDomInsertInProgress: false
	};
}