From b6139239e35d05621603a2b419bff4c0dc9cdf40 Mon Sep 17 00:00:00 2001 From: metamuffin Date: Sat, 21 Oct 2023 20:43:16 +0200 Subject: port js transitions to ts --- web/script/transition.ts | 75 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 web/script/transition.ts (limited to 'web/script/transition.ts') diff --git a/web/script/transition.ts b/web/script/transition.ts new file mode 100644 index 0000000..aa172f7 --- /dev/null +++ b/web/script/transition.ts @@ -0,0 +1,75 @@ +/* + This file is part of jellything (https://codeberg.org/metamuffin/jellything) + which is licensed under the GNU Affero General Public License (version 3); see /COPYING. + Copyright (C) 2023 metamuffin +*/ +/// + +const duration = 0.2 +globalThis.addEventListener("load", () => { + patch_page() +}) + +globalThis.addEventListener("popstate", (_e) => { + transition_to(window.location.href, true) + // transition_to(_e.state.href, true) +}) + +function patch_page() { + document.querySelectorAll("a").forEach(el => { + el.addEventListener("click", async ev => { + ev.preventDefault() + await transition_to(el.href) + }) + }) +} + +async function transition_to(href: string, back?: boolean) { + const trigger_load = prepare_load(href, back) + await fade(false) + trigger_load() +} + +function prepare_load(href: string, back?: boolean) { + const r_promise = fetch(href) + return async () => { + let rt = "" + try { + const r = await r_promise + if (!r.ok) return document.body.innerHTML = "

error

" + rt = await r.text() + } catch (e) { + console.error(e) + return + } + const [head, body] = rt.split("")[1].split("") + document.head.innerHTML = head + document.body.outerHTML = body + fade(true) + // if (!back) window.history.pushState({href}, "", href) + if (!back) window.history.pushState({}, "", href) + patch_page() + } +} + +function fade(dir: boolean) { + const overlay = document.createElement("div") + overlay.style.position = "absolute" + overlay.style.left = "0px" + overlay.style.top = "0px" + overlay.style.width = "100vw" + overlay.style.height = "100vh" + overlay.style.backgroundColor = dir ? "black" : "transparent" + overlay.style.transition = `background-color ${duration}s` + overlay.style.zIndex = "99999"; + setTimeout(() => { + overlay.style.backgroundColor = dir ? "transparent" : "black" + }, 0) + document.body.appendChild(overlay) + return new Promise(res => { + setTimeout(() => { + if (dir) document.body.removeChild(overlay) + res() + }, duration * 1000) + }) +} \ No newline at end of file -- cgit v1.2.3-70-g09d2