Files
mkdocs-material/src/assets/javascripts/components/toc/_/index.ts
2020-04-26 17:22:55 +02:00

137 lines
4.1 KiB
TypeScript

/*
* Copyright (c) 2016-2020 Martin Donath <martin.donath@squidfunk.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
import {
Observable,
OperatorFunction,
combineLatest,
of,
pipe
} from "rxjs"
import { map, switchMap } from "rxjs/operators"
import { Viewport, getElements } from "browser"
import { Header } from "../../header"
import { Main } from "../../main"
import {
Sidebar,
applySidebar,
watchSidebar
} from "../../shared"
import {
AnchorList,
applyAnchorList,
watchAnchorList
} from "../anchor"
/* ----------------------------------------------------------------------------
* Types
* ------------------------------------------------------------------------- */
/**
* Table of contents for [tablet -]
*/
interface TableOfContentsBelowTablet {} // tslint:disable-line
/**
* Table of contents for [tablet +]
*/
interface TableOfContentsAboveTablet {
sidebar: Sidebar /* Sidebar */
anchors: AnchorList /* Anchor list */
}
/* ------------------------------------------------------------------------- */
/**
* Table of contents
*/
export type TableOfContents =
| TableOfContentsBelowTablet
| TableOfContentsAboveTablet
/* ----------------------------------------------------------------------------
* Helper types
* ------------------------------------------------------------------------- */
/**
* Mount options
*/
interface MountOptions {
header$: Observable<Header> /* Header observable */
main$: Observable<Main> /* Main area observable */
viewport$: Observable<Viewport> /* Viewport observable */
tablet$: Observable<boolean> /* Tablet media observable */
}
/* ----------------------------------------------------------------------------
* Functions
* ------------------------------------------------------------------------- */
/**
* Mount table of contents from source observable
*
* @param options - Options
*
* @return Operator function
*/
export function mountTableOfContents(
{ header$, main$, viewport$, tablet$ }: MountOptions
): OperatorFunction<HTMLElement, TableOfContents> {
return pipe(
switchMap(el => tablet$
.pipe(
switchMap(tablet => {
/* [tablet +]: Mount table of contents in sidebar */
if (tablet) {
const els = getElements<HTMLAnchorElement>(".md-nav__link", el)
/* Watch and apply sidebar */
const sidebar$ = watchSidebar(el, { main$, viewport$ })
.pipe(
applySidebar(el, { header$ })
)
/* Watch and apply anchor list (scroll spy) */
const anchors$ = watchAnchorList(els, { header$, viewport$ })
.pipe(
applyAnchorList(els)
)
/* Combine into single hot observable */
return combineLatest([sidebar$, anchors$])
.pipe(
map(([sidebar, anchors]) => ({ sidebar, anchors }))
)
/* [tablet -]: Unmount table of contents */
} else {
return of({})
}
})
)
)
)
}