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index.js
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"use strict";
// ---- config ----------------------------------------------------------------
const autoExpandItems = 30;
const pgSize = 10;
const bigSkip = 60, smallSkip = 5, smallerSkipDiv = 2;
const fadeToFreq = 20, pauseFade = 1, switchFade = 0.25; // time for 0-1 fade
const imageDelayTime = 2, imageCycleTime = 60, imageExplicitTime = 120;
const tickerTime = 60, tickerSwapTime = 1;
const analyzerSettings = { smoothingTimeConstant: 0.5, fftSize: 2 * 512 };
// ---- utils -----------------------------------------------------------------
const $ = x => document.getElementById(x);
const { isArray } = Array;
const { isFinite } = Number;
const { round, floor, ceil, abs, max, min, random } = Math;
const { now } = Date;
const U = undefined;
const mod = (n, m) => { const r = n % m; return r < 0 ? r + m : r; };
const gcd = (a, b) => b === 0 ? a : gcd(b, a % b);
const clipRange = (lo, x, hi) => max(min(x,hi), lo);
const clip01 = x => clipRange(0, x, 1);
const padL = (s, n, c = "\u2007") =>
typeof s !== "string" ? padL(String(s), n, c)
: s.length >= n ? s : c.repeat(n - s.length) + s;
const arrNext = (arr, cur) =>
arr[mod(arr.indexOf(cur)+1, arr.length)];
const timeout = (wait, cb) => setTimeout(cb, wait);
const shuffle = xs => {
xs = xs.slice();
xs.forEach((x,i) => {
const j = i + floor(random() * (xs.length - i));
xs[i] = xs[j], xs[j] = x;
});
return xs;
};
const addLazyProp = (o, name, get) =>
Object.defineProperty(o, name, { configurable: true, get: ()=> {
const value = get(o);
Object.defineProperty(o, name, { value, writable: true });
return value;
}});
const wheelToN = (e, n1, n2, dflt) =>
(e.deltaY > 0 ? +n1 : e.deltaY < 0 ? -n1
: e.deltaX > 0 ? +n2 : e.deltaX < 0 ? -n2
: dflt);
const scrollIntoView = elt =>
elt.scrollIntoView({
behavior: "auto", block: "nearest", inline: "nearest" });
["selected", "player", "altitem", "dragitem"].forEach(prop => {
let item; Object.defineProperty($, prop, {
get: ()=> item,
set: elt => { if (item === elt) return;
if (item instanceof Element) item.classList.remove(prop);
item = elt;
if (item instanceof Element) item.classList.add(prop); } });
});
const $message = $("message");
const message = txt => {
$message.innerHTML = txt;
$message.classList.add("active");
clearTimeout(message.timer);
message.timer = timeout(2000, ()=> $message.classList.remove("active"));
};
// desmos: 1-\cos\left(\frac{\pi}{2}\left(1-\operatorname{abs}\left(x-
// \left\{-1\le x<1:\ 0,\ 1\le x<3:\ 2,\ 3\le x:4\right\}\right)\right)\right)
const spike = n => 1 - Math.cos((Math.PI/2)*n);
const antiSpike = n => Math.sin((Math.PI/2)*n);
const hsl = (h, s, l, a) =>
`hsl(${round(h)}deg, ${round(s)}%, ${round(l)}%, ${round(a)}%)`;
const blankPNG =
"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQ"
+ "VR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=";
const reddishPNG =
"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQ"
+ "VR42mP8f+ZMPQAIgQMYmyUZ4QAAAABJRU5ErkJggg==";
const setStyleVar = (()=>{
const rootS = document.documentElement.style;
return (prop, val) => rootS.setProperty(prop, val);
})();
// ---- data ------------------------------------------------------------------
let all = {};
const processData = data => {
const p = dir => info => {
const isDir = info.type === "dir";
info.path = dir + info.name + (isDir ? "/" : "");
info.name =
(isDir ? (info.name === "" ? "All" : info.name)
: info.name.replace(/[.]([^.]+)$/,
!info.type.startsWith("other") ? "" : " ($1)"))
.replace(/^(\d+)-/, "$1. ")
.replace(/_/g, " ").replace(/-/g, " – ");
if (isDir) {
info.children.forEach(p(info.path));
info.size = 1 + info.children.map(c => c.size || 1)
.reduce((x,y) => x+y, 0);
}
};
p("")(data);
localStorage.all = JSON.stringify(data);
return data;
};
// ---- additional runtime data -----------------------------------------------
const addLazyInfoProps = info => {
addLazyProp(info, "elt", ()=> $(info.path));
if (info.type !== "audio") return;
const txt = x => x ? " " + x.replaceAll(/\//g, " ") : "";
addLazyProp(info, "search", ()=>
(info.path + "/" + txt(info.title) + txt(info.album) + txt(info.track)
+ txt(info.date) + txt(info.artist))
.replace(/[ _]+/g, " ").toLowerCase());
};
const setAllExtras = ()=> {
let first = null, last = null, firsts = [all], lasts = [all];
const loop = parent => parent.children.forEach(child => {
child.parent = parent;
if (last) child.preva = last; else firsts.push(child);
if (child.type === "audio") {
child.duration = +child.duration;
if (!first) first = child;
lasts.forEach(n => n.nexta = child); lasts.length = 0;
last = child;
}
lasts.push(child);
if (child.children) loop(child);
addLazyInfoProps(child);
});
loop(all);
addLazyInfoProps(all);
lasts .forEach(n => n.nexta = first); lasts .length = 0;
firsts.forEach(n => n.preva = last ); firsts.length = 0;
};
// ---- rendering -------------------------------------------------------------
const $main = $("main");
const $plist = $("plist");
const infoMap = new WeakMap();
const getInfo = elt => infoMap.get(elt);
const getPath = elt => elt.id || getInfo(elt).path;
const isMainItem = elt =>
elt === $main || (elt !== $plist && (!!elt.id || elt === $main));
const div = (parent, css = null, txt = null) => {
const div = document.createElement("div");
if (css) (isArray(css) ? css : [css]).forEach(c => div.classList.add(c));
if (txt) div.innerText = txt;
parent.append(div);
return div;
};
const allItems = [];
const renderItem = (elt, info, main) => {
if (info.type === "dir") elt = div(elt, "list");
const item = div(elt, ["item", info.type], info.name);
allItems.push(item);
if (main) item.id = info.path;
item.setAttribute("tabindex", 0);
item.setAttribute("draggable", true);
infoMap.set(item, info);
addItemEvents(item, info);
if (info.type === "dir") {
const subs = div(elt, "subs");
info.children.forEach(c => renderItem(subs, c, main));
}
return item;
};
const focusItemHandler = elt => {
if ($.selected && isMainItem(elt) !== isMainItem($.selected))
[$.altitem, $.selected] = [$.selected, $.altitem];
return $.selected = elt;
};
const addItemEvents = (elt, info) => {
elt.addEventListener("click", e => mainOrPlistOp(e, elt, info));
elt.addEventListener("dragstart", dragStart);
elt.addEventListener("dragend", dragEnd);
elt.addEventListener("focus", ()=> focusItemHandler(elt));
};
// can also use allItems.filter(x => !isHidden(x)), but it tends to be slower
const visibleItems = ()=> [...$main.querySelectorAll([
".list.open > .item",
".list.open > .subs > .item",
".list.open > .subs:not(.only) > .list > .item"
].join(","))];
// ---- player ----------------------------------------------------------------
const $player = $("player");
const play = (elt = $.selected) => {
if (typeof elt === "string") elt = $(elt);
const info = getInfo(elt);
if (elt && info.type !== "audio") elt = null;
if ($.player === elt) $player.currentTime = 0;
$.player = elt;
if (info) fetchBeats(info);
const doPlay = ()=> {
$player.volume = $player.defaultVolume;
if (!elt) return playerStop();
updateDisplays(info);
playerPlay();
setBackgroundImageLoop(imageDelayTime);
}
if (!elt || $player.paused) doPlay();
else fadeTo([0, switchFade], doPlay);
};
let unders = [...document.getElementsByClassName("under")];
const setBackgroundImageLoop = s => {
if (!s) { setBackgroundImage(); s = imageCycleTime; }
clearTimeout(setBackgroundImageLoop.timer);
setBackgroundImageLoop.timer = timeout(1000*s, setBackgroundImageLoop);
};
const setBackgroundImage = (eltOrPath = $.player) => {
if (!eltOrPath) return;
if (typeof eltOrPath === "string") setBackgroundImageLoop(imageExplicitTime);
else {
const info = getInfo(eltOrPath).parent;
if (!info.images) {
info.images =
info.children.filter(n => n.type === "image").map(n => n.path);
info.curImages = [];
};
if (!info.images.length) eltOrPath = null;
if (info.images.length === 1) eltOrPath = info.images[0];
else {
if (!info.curImages.length) info.curImages = shuffle(info.images);
eltOrPath = info.curImages.pop();
}
}
if (unders[0].src === new URL(eltOrPath, document.baseURI).href) return;
unders[0].style.opacity = "";
[unders[1], unders[0]] = [...unders];
unders[0].src = eltOrPath || blankPNG;
unders[0].style.opacity = 1.0;
};
const fadeTo = (tgtTime, cb) => {
const [target, time] = isArray(tgtTime) ? tgtTime : [tgtTime, pauseFade];
const fade = ()=> {
const t = now();
if ($player.paused || t >= end) {
$player.volume = target;
fadeTo.timer = null;
if (cb) cb();
return;
}
$player.volume = target + dir * (end - t) / (1000 * time);
fadeTo.timer = timeout(1000/fadeToFreq, fade);
};
clearTimeout(fadeTo.timer);
fadeTo.timer = timeout(1000/fadeToFreq, fade);
const from = $player.volume, dir = from > target ? +1 : -1;
const end = now() + 1000 * time * abs(target - from);
};
$player.pausing = false; // made up field
const playerStop = ()=> {
$player.pausing = false;
if (!$player.info) return;
if (!$player.paused) $player.pause();
$player.currentTime = 0;
$.player = null;
playerButtonsPlaying(false);
updateDisplays(null);
};
const playerPause = ()=> {
$player.pausing = true;
if (!$player.info) return;
fadeTo(0, ()=> { $player.pausing = false; $player.pause(); });
};
const playerPlay = ()=> {
$player.pausing = false;
if (!$player.info) return play();
if ($player.currentTime > 0) fadeTo($player.defaultVolume);
else $player.volume = $player.defaultVolume;
return audio.resume()
.then(()=> $player.play())
.then(visualizer.start)
.catch(e => { if (e.code !== e.ABORT_ERR) throw e; });
};
const playerPlayPause = ({ ctrlKey }) =>
ctrlKey ? playerStop()
: $player.paused || $player.pausing ? playerPlay()
: playerPause();
$player.leftoverMove = null; // made up field
const doLeftoverMove = ()=> {
if (!$player.leftoverMove) return;
const t = $player.leftoverMove; $player.leftoverMove = null;
playerMoveTo(t > 0 ? t : $player.duration + t);
};
const playerMoveTo = time => {
if (!$player.info) return;
if (time < 0) {
$player.leftoverMove = time;
playerNextPrev(false);
} else if (isFinite($player.duration) && time > $player.duration) {
$player.leftoverMove = time - $player.duration;
playerNextPrev(true);
} else {
if (!beatMode.on) $player.currentTime = time;
else fetchBeats($player.info).then(beats.moveTo(time));
}
};
const playerMove = dir => ({ shiftKey, ctrlKey }) => {
const delta = dir * (ctrlKey ? bigSkip : smallSkip)
/ (shiftKey ? smallerSkipDiv : 1);
if ($player.leftoverMove) $player.leftoverMove += delta;
else playerMoveTo($player.currentTime + delta);
};
const playerNextPrev = down => {
let item = $.player;
if (!item) return;
if (document.activeElement === $search && isMainItem(item)) {
if (search.origin.elt === item || search.origin.type !== "audio")
searchNext(1, loopMode.on);
item = search.origin && search.origin.elt;
} else {
do { item = nextItem(item, down, { wrap: loopMode.on }); }
while (item && item !== $.player && getInfo(item).type !== "audio");
}
play(item);
};
const playerButtonsPlaying = playing =>
$("playerbuttons").classList.toggle("playing", playing);
$player.addEventListener("play", ()=> playerButtonsPlaying(true));
$player.addEventListener("pause", ()=> playerButtonsPlaying(false));
$player.addEventListener("ended", ()=> playerNextPrev(true));
$player.addEventListener("loadeddata", doLeftoverMove);
$player.info = null; // made up field
const updateDisplays = info => {
if ($player.info !== info) {
$player.info = info;
$player.src = info?.path || "";
}
$("wave-image").src =
!info ? reddishPNG : "/images" + info.path.replace(/[.][^.]+$/, ".png");
updateTimes();
updateTrackInfo();
if (!info) visualizer.clear();
};
// ---- navigation ------------------------------------------------------------
const isItem = elt => elt.classList.contains("item");
const isHidden = elt => elt.offsetParent === null;
const isTop = elt => elt === $main || elt === $plist;
const nextItem = (elt, down, opts = {}) => {
const { wrap = true, sub = true, different = false } = opts;
const [xSibling, xChild] =
down ? [e => e.nextElementSibling, e => e.firstElementChild]
: [e => e.previousElementSibling, e => e.lastElementChild];
const loopUp = elt =>
!elt ? elt
: isTop(elt) ? (wrap && loopDn(elt))
: xSibling(elt) ? loopDn(xSibling(elt))
: loopUp(elt.parentElement);
const loopDn = elt =>
!elt ? elt
: isHidden(elt) ? loopUp(elt)
: isItem(elt) ? elt
: loopDn(xChild(elt));
const start = !sub && getInfo(elt).type === "dir" ? elt.parentElement : elt;
const result = loopUp(start);
return (!different || result !== start) ? result : null;
};
let timeRemaining = false;
$("times").addEventListener("click", ()=> timeRemaining = !timeRemaining);
// ---- navigation interactions -----------------------------------------------
const stopEvent = e => { e.preventDefault(); e.stopImmediatePropagation(); };
const selectNext = (elt = $.selected, n = 0, opts) => {
const move = (opts?.move ?? false) && (n>0 ? "down" : "up");
if (!elt) return;
if (move && isMainItem(elt)) return;
let result = null;
while (n !== 0) {
elt = nextItem(elt, n>0, opts);
if (!elt) break; else result = elt;
if (n > 0) n--; else n++;
}
if (!result) return;
if (!move) {
const inSearch = document.activeElement === $search;
result.focus();
if (inSearch) $search.focus();
return;
}
const swap = result === result.parentElement.firstElementChild ? result
: result === result.parentElement.lastElementChild ? null
: move === "up" ? result : result.nextElementSibling;
result.parentElement.insertBefore($.selected, swap);
};
const selectEdge = (n, opts) =>
selectNext(($.selected && !isMainItem($.selected)) ? $plist : $main, n, opts);
const expandDir = (info = getInfo($.selected), expand = "??", focus = true) => {
let elt = info.elt, parent = elt.parentElement;;
if (expand === "toggle")
expand = parent.classList.contains("open")
&& !elt.nextElementSibling.classList.contains("only")
? false : "??";
if (expand === "??")
expand = info.size > autoExpandItems+1 || "deep";
if (expand) {
if (info.type !== "dir") return;
if (parent.classList.contains("open"))
elt.nextElementSibling.classList.remove("only");
parent.classList.add("open");
if (expand === "deep")
[...parent.getElementsByClassName("list")].forEach(e =>
e.classList.add("open"));
if (focus) selectNext(elt, 1);
} else {
if (info.type !== "dir")
elt = parent.previousElementSibling;
else if (isHidden(elt.nextElementSibling))
elt = parent.parentElement.previousElementSibling;
parent = elt.parentElement;
if (focus) elt.focus();
parent.classList.remove("open");
[...parent.getElementsByClassName("open")].forEach(e =>
e.classList.remove("open"));
}
};
const showOnly = (info = getInfo($.selected), focus = true) => {
const elt0 = focusItemHandler(info.elt);
if (info.type !== "dir") info = info.parent;
let elt = info.elt;
const toSelect = elt.parentElement.classList.contains("only")
&& nextItem(elt, true);
for (const e of new Set(["open", "only"]
.flatMap(c => [...$main.getElementsByClassName(c)])))
e.classList.remove("open", "only");
expandDir(info, U, focus);
do {
elt = elt.parentElement; elt.classList.add("open", "only");
elt = elt.parentElement; elt.classList.add("only");
} while (elt !== $main);
if (!focus) return;
if (toSelect) return toSelect.focus();
const f = elt0 && nextItem(elt0, true); if (f) return f.focus();
};
const mainOrPlistOp = (e, elt = $.selected, info = getInfo(elt)) => {
if (e.ctrlKey && info.type !== "dir" && info.type !== "audio")
return info.type !== "otherbin" && window.open(info.path, "_blank");
stopEvent(e);
(e.ctrlKey ? plistOp : mainOp)(e, elt, info);
};
const mainOp = (e, elt = $.selected, info = getInfo(elt)) =>
info.type === "dir" ? (e.shiftKey ? expandDir(U, "toggle") : showOnly(info))
: info.type === "audio" ? play(elt)
: info.type === "image" ? setBackgroundImage(info.path)
: info.type === "other" ? window.open(info.path, "_blank")
: undefined;
const bind = (keys, op, filter) =>
(isArray(keys) ? keys : [keys]).forEach(k => {
if (!bind.keys.has(k)) bind.keys.set(k, []);
bind.keys.get(k).unshift({ op, filter });
});
bind.keys = new Map();
bind.handler = e => {
if (bind.prehook?.(e)) return;
const bs = bind.keys.get(e.key) || bind.keys.get(e.code);
if (!bs) return;
for (const b of bs) {
if (b.filter && !b.filter(e)) continue;
stopEvent(e);
return b.op(e);
}
};
window.addEventListener("keydown", bind.handler);
const withCtrl = e => e.ctrlKey;
const noCtrl = e => !e.ctrlKey;
const noAlt = e => !e.altKey;
const noCtrlAlt = e => !e.ctrlKey && !e.altKey;
const $help = document.createElement("pre");
$("help-text").append($help);
const help = (...lines) => $help.innerHTML += `<div class="entry">${
lines.map(line =>
line.replace(/[<>]/g, m => m === "<" ? "<key>" : "</key>"))
.join("\n")
}</div>`;
bind("?", ()=> helpSel());
// ---- playlist --------------------------------------------------------------
const switchMain = ()=> $.altitem && $.altitem.focus();
const plistOp = (e, elt = $.selected, info = getInfo(elt), dragTo) => {
if (elt === $main) return;
const drag = e instanceof DragEvent && $drag;
if (drag && !isMainItem(elt))
return $plist.insertBefore($drag, dragTo);
if (!isMainItem(elt)) {
showOnly(info.parent);
info.elt.focus();
return;
}
const render = dragTo
? info => $plist.insertBefore(renderItem($plist, info, false), dragTo)
: info => renderItem($plist, info, false);
const add = info =>
info.type === "dir" ? info.children.forEach(add)
: info.type !== "audio" ? U
: $.player === info.elt ? $.player = $.altitem = render(info)
: $.altitem ? render(info)
: $.player ? $.altitem = render(info)
: play($.altitem = render(info));
add(info);
if (e instanceof KeyboardEvent)
selectNext(U, +1, { wrap: false, sub: false });
};
const plistDelete = backOrElt => {
const [back, item] = backOrElt instanceof Element
? [false, backOrElt] : [backOrElt, $.selected];
if (!item || isMainItem(item)) return;
const toDelete = back ? item.previousElementSibling : item;
if (!toDelete) return;
const newSel = back ? item
: item.nextElementSibling || item.previousElementSibling || $.altitem;
const [prev, next] = [false, true].map(d =>
nextItem(toDelete, d, { different: true }));
if (toDelete === $.player) {
$.player = { previousElementSibling: prev, nextElementSibling: next };
infoMap.set($.player, getInfo(toDelete));
} else if ($.player && !($.player instanceof Element)) {
if ($.player.nextElementSibling === toDelete)
$.player.nextElementSibling = next;
if ($.player.previousElementSibling === toDelete)
$.player.previousElementSibling = prev;
}
toDelete.remove();
newSel.focus();
if (isMainItem(newSel)) $.altitem = null;
};
// ---- drag and drop ---------------------------------------------------------
let $drag = null;
const dragStart = e =>
e.dataTransfer.setData("text/plain",
location.origin + getPath($drag = e.target));
const dragEnd = e => $drag = null;
const addDragEvents = (elt, op, dragOK = null) => {
let count = 0;
const YtoElt = e => {
if (e.target !== $plist) {
return e.offsetY >= e.target.offsetHeight/2
? e.target.nextElementSibling : e.target;
} else {
const fst = $plist.firstElementChild;
if (fst && e.offsetY <= fst.offsetTop) return fst;
return null;
}
};
const dragHandle = handler => e =>
$drag && (!dragOK || dragOK(e)) && (stopEvent(e), handler(e));
let oLast = 0;
elt.addEventListener("dragover", dragHandle(e => {
if (elt !== $plist) return;
if (e.timeStamp - oLast <= 100) return; else oLast = e.timeStamp;
const di = YtoElt(e);
if (di) { $.dragitem = di; $.dragitem.classList.remove("bottom"); }
else if ($.dragitem = $plist.lastElementChild)
$.dragitem.classList.add("bottom");
if (di === $plist.firstElementChild) plist.scrollTop -= 1;
else if (di === $plist.lastElementChild) plist.scrollTop += 1;
}));
elt.addEventListener("dragenter", dragHandle(e =>
count++ === 0 && elt.classList.add("drag-to")));
elt.addEventListener("dragleave", dragHandle(e =>
--count === 0 && elt.classList.remove("drag-to")));
elt.addEventListener("drop", dragHandle(e => {
count = 0; elt.classList.remove("drag-to");
op(e, $drag, U, elt === $plist ? YtoElt(e) : U);
$drag = null;
$.dragitem = null;
}));
};
addDragEvents($("control-panel"), mainOp);
addDragEvents($plist, plistOp);
addDragEvents($main, (e, d) => plistDelete(d), e => !isMainItem($drag));
// ---- toggles ---------------------------------------------------------------
const mkToggle = (id, cb = null, opts = {}) => {
const elt = $(id);
const toggle = e => {
if (opts.preHandler?.(e)) return;
elt.classList.toggle("on", (toggle.on = !toggle.on));
if (!opts?.noMessage) message(`${elt.title}: ${toggle.on ? "on" : "off"}`);
if (cb) cb(toggle.on);
};
toggle.on = elt.classList.contains("on");
elt.addEventListener("click", toggle);
return toggle;
};
const deviceSel = mkToggle("device", on => {
if (on) audio.device.populateSelector();
showOverlay($("select-device"), on, deviceSel);
}, { noMessage: true });
const helpSel = mkToggle("help", on =>
showOverlay($("help-text"), on, helpSel),
{ noMessage: true });
const loopMode = mkToggle("loop");
const bigvizMode = mkToggle("bigviz", on =>
document.documentElement.classList.toggle("bigviz", on));
const flashyMode = mkToggle("flashy",
on => document.body.classList.toggle("flashy", on),
{ preHandler: e => e?.shiftKey && (mkFlashyWindow(), true) });
const beatMode = mkToggle("beatmode");
// ---- overlays --------------------------------------------------------------
const showOverlay = (elt, on = true, offOp = null) => {
if (elt.classList.contains("on") === on) return;
if (on && showOverlay.off) showOverlay.off();
elt.classList.toggle("on", on);
$("overlay-bg").classList.toggle("on", on);
showOverlay.off = !on ? null
: offOp || (()=> showOverlay(elt, false));
};
$("overlay-bg").addEventListener("click", ()=> showOverlay.off?.());
// ---- generic escape handler ------------------------------------------------
const escapeHandler = ()=> {
if (showOverlay.off) return showOverlay.off();
if (flashyMode.on) return flashyMode();
if (bigvizMode.on) return bigvizMode();
};
bind("Escape", escapeHandler);
document.querySelectorAll(".under").forEach(u =>
u.addEventListener("click", escapeHandler));
// ---- player interactions ---------------------------------------------------
bind("Enter", mainOrPlistOp, noAlt);
help(`<⏎>: play selected track or open selected file`,
` dir: sublist focus, shift: toggle`,
` ctrl: add to playlist and play, playlist: reveal and focus track`);
bind("Tab", switchMain, noCtrlAlt);
help(`<⇥>: switch between main and playlist panes`);
const initiateSearch = e => {
if (e) $search.value = e.key; else $search.select();
$search.focus(); }
bind("/", ()=> initiateSearch(), noCtrlAlt);
help(`</>: start a full search`);
bind(["Backspace", "Delete"], e => plistDelete(e.key === "Backspace"));
help(`<⌫>⋅<⌦>: remove track from playlist`);
bind("+", ()=> expandDir(U, true), noCtrlAlt);
bind("-", ()=> expandDir(U, false), noCtrlAlt);
bind("*", ()=> expandDir(U, "deep"), noCtrlAlt);
help(`<+>⋅<*>⋅<->: subdir expand / deep-expand / close`);
bind("\\", bigvizMode);
help(`<\\>: big visualization mode`,
` ctrl: next visualization, ctrl+shift: next submode`);
bind("|", ()=> flashyMode()); // | uses shift: avoid a new window
help(`<|>: color flashing mode`);
bind(".", beatMode);
help(`<.>: beat movement mode`);
bind("ArrowUp", e => selectNext(U, -1, { move: e.ctrlKey }));
bind("ArrowDown", e => selectNext(U, +1, { move: e.ctrlKey }));
bind("PageUp", e => selectNext(U, -pgSize, { wrap: false, move: e.ctrlKey }));
bind("PageDown", e => selectNext(U, +pgSize, { wrap: false, move: e.ctrlKey }));
bind("Home", e => selectEdge(+1, { move: e.ctrlKey }));
bind("End", e => selectEdge(-1, { move: e.ctrlKey }));
help(`<⇧>⋅<⇩>⋅<⇞>⋅<⇟>⋅<⇱>⋅<⇲>: list navigation`,
` ctrl: move playlist track`);
bind([" ", "Numpad5"], playerPlayPause);
help(`<Spc>⋅<Pad5>: play / pause`);
bind("ArrowLeft", playerMove(-1));
bind("ArrowRight", playerMove(+1));
help(`<⇦>⋅<⇨>: move in track (5s)`,
` ctrl: big skip (1m)`,
` shft: small skip (½)`);
[[null, "p-pause", "pause", playerPause],
[null, "p-play", "play", playerPlay],
[null, "p-stop", "stop", playerStop],
["Numpad4", "p-prev", "previoustrack", ()=> playerNextPrev(false)],
["Numpad6", "p-next", "nexttrack", ()=> playerNextPrev(true)],
["Numpad1", "p-rew", "seekbackward", playerMove(-2)],
["Numpad3", "p-fwd", "seekbackward", playerMove(+2)],
].forEach(([key, id, media, handler]) => {
if (key) bind(key, handler);
if (id) $(id).addEventListener("click", handler);
if (media) navigator.mediaSession.setActionHandler(media, handler);
});
help(`<Pad4>⋅<Pad6>: next / prev track`);
help(`<Pad1>⋅<Pad3>: big move (×2)`);
const markers = new Map();
const markerJump = e => {
const { key, code, ctrlKey: ctrl } = e;
const n = +e.code.substring(code.length-1);
if (ctrl) {
let m = markers.get($player.info);
if (!m) markers.set($player.info, m = new Array(10));
const target = $player.currentTime - 0.015; // reaction time
m[n] = beatMode.on && beats.nextBeatTime(target) || $player.currentTime;
} else { // defaults to a spread of 10 markers (youtube-style)
const newTime =
markers.get($player.info)?.[n]
|| (isFinite($player.duration) ? n * $player.duration / 10
: $player.currentTime);
playerMoveTo(newTime);
}
};
bind("0123456789".split("").map(d => "Digit"+d), markerJump);
help(`<1>⋅<2>⋅…⋅<0>: move to percentage`,
` ctrl: set marker`);
$player.defaultVolume = 1; // made up field
const $volume = $("volume"), $volumeMax = +$volume.max;
$volume.value = $volumeMax;
const updateVolume = v => {
const vol = clip01(v / $volumeMax);
fadeTo($player.defaultVolume = vol);
$volume.value = round($volumeMax * vol);
message(`${$volume.title}: ${padL(round(vol*100), 3)}%`);
};
$volume.addEventListener("input", ()=> updateVolume(+$volume.value));
$volume.addEventListener("mousedown", e =>
e.button === 1 && updateVolume($volumeMax));
$volume.addEventListener("wheel", e => {
stopEvent(e); updateVolume(+$volume.value + wheelToN(e, -1, 2, 0)); });
bind("Numpad8", ()=> updateVolume(+$volume.value + 1), noCtrl);
bind("Numpad8", ()=> updateGain(+$gain.value + 0.25), withCtrl);
bind("Numpad2", ()=> updateVolume(+$volume.value - 1), noCtrl);
bind("Numpad2", ()=> updateGain(+$gain.value - 0.25), withCtrl);
help(`<Pad8>⋅<Pad2>: volume up / down`,
` ctrl: gain up / down`);
$player.defaultPlaybackRate = 1;
const $rate = $("rate"), $rateMax = +$rate.max;
$rate.value = $rateMax / 2;
const rateFracs = "0 ⅛ ¼ ⅜ ½ ⅝ ¾ ⅞ 1 1⅛ 1¼ 1⅜ 1½ 1⅝ 1¾ 1⅞ 2".split(" ");
const updateRate = r => {
const rate = clip01(r / $rateMax) + 0.5;
$player.preservesPitch = false;
$player.defaultPlaybackRate = $player.playbackRate = rate;
$rate.value = round($rateMax * (rate - 0.5));
const frac = rateFracs[round(rate*8)];
message(`${$rate.title
}: <span style="display: inline-block; width: 1.25em;">${frac}</span>`);
};
$rate.addEventListener("input", ()=> updateRate(+$rate.value));
$rate.addEventListener("mousedown", e =>
e.button === 1 && updateRate($rateMax/2));
$rate.addEventListener("wheel", e => {
stopEvent(e); updateRate(+$rate.value + wheelToN(e, -1, 2, 0)); });
bind(["Numpad9", ">", "]"], ()=> updateRate(+$rate.value + 1));
bind(["Numpad7", "<", "["], ()=> updateRate(+$rate.value - 1));
bind(["="], ()=> updateRate($rateMax/2));
help(`<Pad7>⋅<Pad9>⋅<=>: slower / faster / normal playback`);
const $gain = $("gain"), $gainMax = +$gain.max;
$gain.value = 1;
const updateGain = g => {
const gain = round(clip01(g / $gainMax) * 4 * $gainMax) / 4;
audio.setGain(gain);
$gain.value = gain;
message(`${$gain.title}: ${gain.toFixed(2)}`);
};
$gain.addEventListener("input", ()=> updateGain(+$gain.value));
$gain.addEventListener("mousedown", e => e.button === 1 && updateGain(1));
$gain.addEventListener("wheel", e => {
stopEvent(e); updateGain(+$gain.value + wheelToN(e, -0.25, 1, 0)); });
// mouse wheel for convenient song navigation
$("control-panel").addEventListener("wheel", e =>
playerMove(wheelToN(e, 0.5, 1, U))(e));
// ---- time display ----------------------------------------------------------
const updateTimes = ()=> {
const $dur = $("dur"), $time = $("time");
const formatTime = t => floor(t/60) + ":" + padL(abs(t) % 60, 2, "0");
if (!isFinite($player.duration) || !$.player) {
updateTimes.shownTime = null;
updateTimes.shownPath = null;
$dur.innerText = $time.innerText = "–:––";
drawPlayerLine(null);
beats.update(null);
return;
}
const path = $player.info?.path || "";
if (updateTimes.shownPath !== path && $player.duration) {
updateTimes.shownPath = path;
$dur.innerText = formatTime(round($player.duration));
}
let t = $player.currentTime, d = $player.duration;
drawPlayerLine(t / d);
beats.update(t);
if (timeRemaining) t = d - t;
t = round(t);
if (updateTimes.shownTime !== t) {
updateTimes.shownTime = t;
$time.innerText = (timeRemaining ? "-" : "") + formatTime(t);
}
};
// ---- info display ----------------------------------------------------------
const infoDisplay = (()=>{
const infoDiv = $("track-info"), textDiv = infoDiv.firstElementChild;
const START = 0, END = 1, CLEARSTART = 2, CLEAREND = 3, NEWTEXT = 4;
let initialized = false, state = START, newText = "", moveTo = 0;
//
const move = (x, st, { time = tickerTime, text = U, fun = U } = {}) => {
if (text !== U) {
textDiv.innerText = text;
moveTo = infoDiv.offsetWidth - textDiv.scrollWidth;
}
if (textDiv.innerText === "" && state === NEWTEXT) return;
textDiv.style.transition = `left ${time}s ${fun || "ease-in-out"}`;
textDiv.style.left = `${x}px`;
state = st;
if (time <= 0) timeout(100, done);
};
//
const transition = [];
transition[START] = ()=> move(0, END);
transition[END] = ()=> move(moveTo, START);
transition[NEWTEXT] = ()=> move(0, END,
{ time: tickerSwapTime, fun: "ease-out" });
transition[CLEARSTART] = ()=> move(-(textDiv.scrollWidth+1), CLEAREND,
{ time: tickerSwapTime, fun: "ease-in" });
transition[CLEAREND] = ()=> move(infoDiv.offsetWidth, NEWTEXT,
{ time: 0, text: newText });
const done = ()=> transition[state]();
//
if (!initialized) {
initialized = true;
textDiv.addEventListener("transitionend", done);
}
//
return str => { state = CLEARSTART; newText = str; done(); };
})();
const updateTrackInfo = ()=> {
if (!$player.info) return infoDisplay("");
const info = $.player && getInfo($.player), sep = " • ";
let text = "";
if (info) {
text += info.title || info.name;
text += sep;
text += info.album || info.parent.name;
if (info.track) text += ` (#${info.track})`;
if (info.date) text += `, ${info.date}`;
text += sep;
text += info.artist || info.parent.parent?.name || "???";
}
infoDisplay(text);
};
// ---- waveform control ------------------------------------------------------
const drawPlayerLine = (()=>{
const $needle = $("wave-needle");
const half = $needle.computedStyleMap().get("width").value / 2;
let shown = true;
return loc => {
if (loc === null) {
if (shown) { shown = false; $needle.style.display = "none"; }
} else {
if (!shown) { shown = true; $needle.style.display = ""; }
const pos = $needle.parentElement.clientWidth * loc - half;
$needle.style.left = `${pos}px`;
}
};
})();
// not needed, since it's called more frequently by updateTimes()
// $player.addEventListener("timeupdate", drawPlayerLine);
const $wave = $("wave");
$wave.addEventListener("mousedown", e => {
const move = e => {
const dur = $player.duration;
if (isNaN(dur)) return;
const rect = $wave.getBoundingClientRect();
playerMoveTo(dur * clip01((e.clientX-rect.left) / rect.width));
updateTimes();
};
stopEvent(e);
const up = e => {
window.removeEventListener("mousemove", move);
window.removeEventListener("mouseup", up);
};
window.addEventListener("mousemove", move);
window.addEventListener("mouseup", up);
move(e);
});
// ---- search function -------------------------------------------------------
const mkSearcher = str => {
const escape = str => str.replace(/[.*+?^${}()|\[\]\\]/g, "\\$&");
const rx = RegExp(
[...str.trim().matchAll(/\w+|\W/g)]
.map(m => m[0]).filter(s => s !== " ")
.map(s => s.length === 1 ? escape(s) : s.split("").join("\\w*"))
.join(".*"));
return inp => rx.test(inp);
};
/*
(()=>{
let n = 0, sec = "", fails = [], ok = ()=>{};
const js = JSON.stringify;
const test = res => str =>
(n++, !!ok(str) === res || fails.push(
`${n} ${sec} > ${res ? "t" : "f"}(${js(str)})`));
const t = test(true);
const f = test(false);
const search = (...xs) => {
sec = `search(${xs.map(js).join(", ")})`, ok = mkSearcher(...xs); };
search("");
t("");
t("/");
t(" ");
t("foo");
t("/foo");
t("/foo/");
search("foo");
t("foo");
t("/foo");
t("foo/");
t("/foo/");
t("foooo");
t("fxoxo");
t("fxxxoxxxo");
t("xfxoxox");
f("oof");
search(" foo bar ");
t("foo bar");
f("foo");
f(" bar foo ");
f("barfoo");
t("foobar");
f("bafoor");
f("fobaro");
f("fboaor");
f("bfaoro");
t("foo.bar");
f("bar.foo");
f("rab oof");
t("foo-bar");
t("foo/bar");
t("foo / bar");
t("/foo bar");
f("bar foo/");
t("foo bar/");
f("///bar foo///");