mirror of
https://github.com/squidfunk/mkdocs-material.git
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120 lines
3.5 KiB
TypeScript
120 lines
3.5 KiB
TypeScript
/*
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* Copyright (c) 2016-2020 Martin Donath <martin.donath@squidfunk.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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import {
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MonoTypeOperatorFunction,
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Observable,
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animationFrameScheduler,
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pipe
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} from "rxjs"
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import {
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finalize,
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map,
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mapTo,
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observeOn,
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scan,
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switchMap,
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withLatestFrom
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} from "rxjs/operators"
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import {
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addToSearchResultList,
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resetSearchResultList,
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resetSearchResultMeta,
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setSearchResultMeta
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} from "actions"
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import { SearchResult } from "integrations"
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import { renderSearchResult } from "templates"
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import { getElementOrThrow } from "../../agent"
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import { SearchQuery } from "../query"
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/* ----------------------------------------------------------------------------
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* Helper types
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* ------------------------------------------------------------------------- */
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/**
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* Paint options
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*/
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interface PaintOptions {
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query$: Observable<SearchQuery> /* Search query observable */
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fetch$: Observable<boolean> /* Search trigger observable */
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}
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/* ----------------------------------------------------------------------------
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* Functions
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* ------------------------------------------------------------------------- */
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/**
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* Paint search results from source observable
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*
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* @param el - Search result element
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* @param options - Options
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*
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* @return Operator function
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*/
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export function paintSearchResult(
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el: HTMLElement, { query$, fetch$ }: PaintOptions
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): MonoTypeOperatorFunction<SearchResult[]> {
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const list = getElementOrThrow(".md-search-result__list", el)
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const meta = getElementOrThrow(".md-search-result__meta", el)
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return pipe(
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/* Paint search result metadata */
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withLatestFrom(query$),
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map(([result, query]) => {
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if (query.value) {
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setSearchResultMeta(meta, result.length)
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} else {
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resetSearchResultMeta(meta)
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}
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return result
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}),
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/* Paint search result list */
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switchMap(result => fetch$
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.pipe(
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/* Defer repaint to next animation frame */
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observeOn(animationFrameScheduler),
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scan(index => {
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const container = el.parentElement!
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while (index < result.length) {
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addToSearchResultList(list, renderSearchResult(result[index++]))
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if (container.scrollHeight - container.offsetHeight > 16)
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break
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}
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return index
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}, 0),
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/* Re-map to search result */
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mapTo(result),
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/* Reset on complete or error */
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finalize(() => {
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resetSearchResultList(list)
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})
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)
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)
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)
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}
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