diff options
Diffstat (limited to 'src/templates/assets/javascripts/components/header/title/index.ts')
| -rw-r--r-- | src/templates/assets/javascripts/components/header/title/index.ts | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/src/templates/assets/javascripts/components/header/title/index.ts b/src/templates/assets/javascripts/components/header/title/index.ts deleted file mode 100644 index f3bc0d08..00000000 --- a/src/templates/assets/javascripts/components/header/title/index.ts +++ /dev/null @@ -1,144 +0,0 @@ -/* - * Copyright (c) 2016-2023 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 { - EMPTY, - Observable, - Subject, - defer, - distinctUntilKeyChanged, - finalize, - map, - tap -} from "rxjs" - -import { - Viewport, - getElementSize, - getOptionalElement, - watchViewportAt -} from "~/browser" - -import { Component } from "../../_" -import { Header } from "../_" - -/* ---------------------------------------------------------------------------- - * Types - * ------------------------------------------------------------------------- */ - -/** - * Header - */ -export interface HeaderTitle { - active: boolean /* Header title is active */ -} - -/* ---------------------------------------------------------------------------- - * Helper types - * ------------------------------------------------------------------------- */ - -/** - * Watch options - */ -interface WatchOptions { - viewport$: Observable<Viewport> /* Viewport observable */ - header$: Observable<Header> /* Header observable */ -} - -/** - * Mount options - */ -interface MountOptions { - viewport$: Observable<Viewport> /* Viewport observable */ - header$: Observable<Header> /* Header observable */ -} - -/* ---------------------------------------------------------------------------- - * Functions - * ------------------------------------------------------------------------- */ - -/** - * Watch header title - * - * @param el - Heading element - * @param options - Options - * - * @returns Header title observable - */ -export function watchHeaderTitle( - el: HTMLElement, { viewport$, header$ }: WatchOptions -): Observable<HeaderTitle> { - return watchViewportAt(el, { viewport$, header$ }) - .pipe( - map(({ offset: { y } }) => { - const { height } = getElementSize(el) - return { - active: y >= height - } - }), - distinctUntilKeyChanged("active") - ) -} - -/** - * Mount header title - * - * This function swaps the header title from the site title to the title of the - * current page when the user scrolls past the first headline. - * - * @param el - Header title element - * @param options - Options - * - * @returns Header title component observable - */ -export function mountHeaderTitle( - el: HTMLElement, options: MountOptions -): Observable<Component<HeaderTitle>> { - return defer(() => { - const push$ = new Subject<HeaderTitle>() - push$.subscribe({ - - /* Handle emission */ - next({ active }) { - el.classList.toggle("md-header__title--active", active) - }, - - /* Handle complete */ - complete() { - el.classList.remove("md-header__title--active") - } - }) - - /* Obtain headline, if any */ - const heading = getOptionalElement(".md-content h1") - if (typeof heading === "undefined") - return EMPTY - - /* Create and return component */ - return watchHeaderTitle(heading, options) - .pipe( - tap(state => push$.next(state)), - finalize(() => push$.complete()), - map(state => ({ ref: el, ...state })) - ) - }) -} |
