Files
mkdocs-material/src/assets/javascripts/components/content/details/index.ts
2022-04-02 18:36:59 +02:00

142 lines
4.0 KiB
TypeScript

/*
* Copyright (c) 2016-2022 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,
Subject,
defer,
filter,
finalize,
map,
merge,
tap
} from "rxjs"
import { Component } from "../../_"
/* ----------------------------------------------------------------------------
* Types
* ------------------------------------------------------------------------- */
/**
* Details
*/
export interface Details {
action: "open" | "close" /* Details state */
reveal?: boolean /* Details is revealed */
}
/* ----------------------------------------------------------------------------
* Helper types
* ------------------------------------------------------------------------- */
/**
* Watch options
*/
interface WatchOptions {
target$: Observable<HTMLElement> /* Location target observable */
print$: Observable<boolean> /* Media print observable */
}
/**
* Mount options
*/
interface MountOptions {
target$: Observable<HTMLElement> /* Location target observable */
print$: Observable<boolean> /* Media print observable */
}
/* ----------------------------------------------------------------------------
* Functions
* ------------------------------------------------------------------------- */
/**
* Watch details
*
* @param el - Details element
* @param options - Options
*
* @returns Details observable
*/
export function watchDetails(
el: HTMLDetailsElement, { target$, print$ }: WatchOptions
): Observable<Details> {
let open = true
return merge(
/* Open and focus details on location target */
target$
.pipe(
map(target => target.closest("details:not([open])")!),
filter(details => el === details),
map(() => ({
action: "open", reveal: true
}) as Details)
),
/* Open details on print and close afterwards */
print$
.pipe(
filter(active => active || !open),
tap(() => open = el.open),
map(active => ({
action: active ? "open" : "close"
}) as Details)
)
)
}
/**
* Mount details
*
* This function ensures that `details` tags are opened on anchor jumps and
* prior to printing, so the whole content of the page is visible.
*
* @param el - Details element
* @param options - Options
*
* @returns Details component observable
*/
export function mountDetails(
el: HTMLDetailsElement, options: MountOptions
): Observable<Component<Details>> {
return defer(() => {
const push$ = new Subject<Details>()
push$.subscribe(({ action, reveal }) => {
if (action === "open")
el.setAttribute("open", "")
else
el.removeAttribute("open")
if (reveal)
el.scrollIntoView()
})
/* Create and return component */
return watchDetails(el, options)
.pipe(
tap(state => push$.next(state)),
finalize(() => push$.complete()),
map(state => ({ ref: el, ...state }))
)
})
}